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Publication numberCN103038657 B
Publication typeGrant
Application numberCN 201180037151
PCT numberPCT/US2011/049515
Publication date13 Jan 2016
Filing date29 Aug 2011
Priority date27 Aug 2010
Also published asCN103038657A, US8450978, US20120049802, WO2012027736A2, WO2012027736A3
Publication number201180037151.9, CN 103038657 B, CN 103038657B, CN 201180037151, CN-B-103038657, CN103038657 B, CN103038657B, CN201180037151, CN201180037151.9, PCT/2011/49515, PCT/US/11/049515, PCT/US/11/49515, PCT/US/2011/049515, PCT/US/2011/49515, PCT/US11/049515, PCT/US11/49515, PCT/US11049515, PCT/US1149515, PCT/US2011/049515, PCT/US2011/49515, PCT/US2011049515, PCT/US201149515
Inventors叶夫根P巴尔苏科夫, 金荣钱, 彼得丰达罗, 明于
Applicant德州仪器公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
监视具有多种参数更新速率的可再充电电池 Monitoring various parameters update rate having a rechargeable battery translated from Chinese
CN 103038657 B
Abstract  translated from Chinese
监视可再充电电池的状态涉及:在所述电池的放电期间重复地获得与所述电池相关的至少一个所测量值(192);在所述电池的放电期间基于所述电池的先前所计算的状态、所述所测量值及所述电池的至少一个参数而重复地计算所述电池的所述状态(204);在所述电池的所述状态超过阈值之前,以第一速率更新所述电池的所述参数(206);在所述电池的所述状态超过所述阈值之后,以比所述第一速率快的第二速率更新所述电池的所述参数(214);及响应于所述参数的每一更新而校正所述电池的所述状态(208)。 Monitoring the status of the rechargeable battery involved: during discharging of the battery with the battery repeatedly obtaining at least one associated measurement value (192); previously calculated based on the battery during discharge of the battery state, the value for the battery and measuring at least one parameter and repeatedly calculating the state of the battery (204); prior to the state of the battery exceeds a threshold value, update said battery at a first rate said parameter (206); after the state of the battery exceeds the threshold value, said first rate is faster than the rate of updating said parameter of said second battery (214); and in response to the each said updated parameters and correcting the state of the battery (208).
Claims(18)  translated from Chinese
1.一种监视电池的状态的方法,其包括: 在所述电池的放电期间重复地获得与所述电池相关的至少一个测量值; 在所述电池的放电期间基于所述电池的先前计算的状态、所述测量值及所述电池的至少一个参数而重复地计算所述电池的所述状态; 在所述电池的所述状态超过阈值之前,以第一速率更新所述电池的所述参数; 在所述电池的所述状态超过所述阈值之后,以比所述第一速率快的第二速率更新所述电池的所述参数;及响应于所述参数的每一更新而校正所述电池的所述状态。 1. A method of monitoring the state of the battery, comprising: during discharging of the battery with the battery repeatedly obtaining at least one measurement value associated; during the discharge of the battery based on the previously calculated battery of state, the measurement values and at least one parameter of the cell and repeatedly calculating the state of the battery; prior to the state of the battery exceeds a threshold value, updating the parameter at a first rate of said battery ; after the state of the battery exceeds the threshold value, said first rate is faster than the second rate of updating the parameter of the battery; and updated in response to each of said parameters and said corrected the state of the battery.
2.根据权利要求1所述的方法,其中在所述电池的所述状态超过所述阈值之前所述参数的改变速率的平均值小于在所述电池的所述状态超过所述阈值之后所述参数的所述改变速率的平均值。 2. The method according to previous claim, wherein in the state of the battery exceeds the threshold value of the average value of the parameter is less than the rate of change exceeds the threshold value in the state of the battery after the the average rate of change of the parameters.
3.根据权利要求1所述的方法,其中所述电池可由端子电压对容量的曲线图表征,所述曲线图在所述阈值之前的斜率小于在所述阈值之后的斜率。 3. The method according to claim 1, wherein the terminal voltage of the battery capacity by a graph representation, the slope of the curve before the slope is less than the threshold value after the threshold value.
4.根据权利要求1所述的方法,其中在所述电池的所述状态超过所述阈值之前,电池计电路以第一电力消耗速率消耗电力;且在所述电池的所述状态超过所述阈值之后,所述电池计电路以比所述第一电力消耗速率快的第二电力消耗速率消耗电力。 4. The method of claim 1, wherein prior to the state of the battery exceeds the threshold value, the battery gauge circuitry to a first power consumption rate of power consumption; and exceeds in said state of said battery After the threshold value, the battery gauge circuitry to the first power consumption rate is faster than the second rate of power consumption of the power consumption.
5.根据权利要求1所述的方法,其中所述电池的所述状态为所述电池的充电状态百分比;且所述阈值在10%与20%之间。 And the threshold value between 10% and 20%; 5. The method according to claim 1, wherein said state of said battery as a percentage of the battery state of charge.
6.根据权利要求1所述的方法,其中所述阈值为第一阈值,所述方法进一步包括: 在所述电池的所述状态超过所述第一阈值之后且在所述电池的所述状态超过第二阈值之前,以所述第二速率更新所述电池的所述参数;及在所述电池的所述状态超过所述第二阈值之后,以比所述第二速率快的第三速率更新所述电池的所述参数。 And the state of the battery in the state after the battery exceeds the first threshold value: 6. The method according to claim 1, wherein the threshold is a first threshold value, the method further comprises Before exceeds the second threshold value, the second rate to update the parameters of the cell; and after the state of the battery exceeds the second threshold value, a second rate faster than said third rate updating said parameter of the cell.
7.一种用于监视电池的状态的电池计电路,其包括: 至少一个输入,在所述电池的放电期间在所述至少一个输入处接收与所述电池相关的数据;及处理器,其经电连接以接收所述数据; 其中所述处理器: 基于所述数据、所述电池的至少一个参数及所述电池的先前修正的状态而重复地修正所述电池的所述状态; 在所述电池的所述状态超过阈值之前,以第一速率更新所述参数; 在所述电池的所述状态超过所述阈值之后,以比所述第一速率快的第二速率更新所述参数;及响应于所述参数的每一更新而校正所述电池的所述状态。 7. The battery gauge circuitry for monitoring the status of the battery, comprising: at least one input, during discharge of the battery receiving at least one input associated with the data in the cell; and a processor via electrically connected to receive said data; wherein said processor: based on the data, the at least one parameter of the battery and the battery status and a previous revised repeatedly correcting the state of the battery; in the Before the state of said battery exceeds a threshold, updating the parameter at a first rate; after the state of the battery exceeds the threshold value, said first rate is faster than said second rate parameter updating; and in response to each update of the state of the corrected parameters of the cell.
8.根据权利要求7所述的电池计电路,其中在所述电池的所述状态超过所述阈值之前所述参数的改变速率的平均值小于在所述电池的所述状态超过所述阈值之后所述参数的所述改变速率的平均值。 Before After timepiece circuit 8. The battery according to claim 7, wherein said state of said battery exceeds the threshold value of the average value of the parameter is less than the rate of change exceeds the threshold value in the state of the battery The parameters of the rate of change of the average value.
9.根据权利要求7所述的电池计电路,其中所述电池可由端子电压对容量的曲线图表征,所述曲线图在所述阈值之前的斜率小于在所述阈值之后的斜率。 9. The battery gauge circuit according to claim 7, wherein the terminal voltage of the battery capacity by a graph representation, the slope of the curve before the slope is less than the threshold value after the threshold value.
10.根据权利要求7所述的电池计电路,其中在所述电池的所述状态超过所述阈值之前,所述电池计电路以第一电力消耗速率消耗电力;且在所述电池的所述状态超过所述阈值之后,所述电池计电路以比所述第一电力消耗速率快的第二电力消耗速率消耗电力。 Before timepiece circuit 10. The battery according to claim 7, wherein said state of said battery exceeds the threshold value, the battery gauge circuitry to a first power consumption rate of power consumption; and in said battery After the state exceeds the threshold value, the battery gauge circuitry to said first power consumption is faster than the rate of a second power consumption rate of power consumption.
11.根据权利要求7所述的电池计电路,其中所述电池的所述状态为所述电池的充电状态百分比;且所述阈值在10%与20%之间。 11. The battery gauge circuit according to claim 7, wherein said state of said battery as a percentage of the state of charge of the battery; and the threshold value between 10% and 20%.
12.根据权利要求7所述的电池计电路,其中: 所述阈值为第一阈值; 在所述电池的所述状态超过所述第一阈值之后且在所述电池的所述状态超过第二阈值之前,所述处理器以所述第二速率更新所述电池的所述参数;且在所述电池的所述状态超过所述第二阈值之后,所述处理器以比所述第二速率快的第三速率更新所述电池的所述参数。 12. The battery meter circuit according to claim 7, wherein: said threshold is a first threshold value; after the state of the battery exceeds the first threshold and the state of the battery exceeds a second Before the threshold value, the processor updates the second rate of the parameter of the battery; and in the state after the battery exceeds the second threshold value, the processor than the second rate third rate faster updating the parameters of the cell.
13.一种用于监视电池的状态的电池计,其包括: 用于在所述电池的放电期间产生关于所述电池的至少一个测量值的构件; 用于在所述电池的放电期间基于所述测量值及与所述电池相关的至少一个参数而重复地修正所述电池的所述状态的构件; 用于在所述电池的所述状态已超过阈值之前以第一更新时间间隔且在所述电池的所述状态已超过所述阈值之后以比所述第一更新时间间隔短的第二更新时间间隔在多个更新点处更新所述参数的构件;及用于响应于更新所述参数而校正所述电池的所述状态的构件。 13. A method for monitoring the battery state of the battery meter, comprising: means for generating at least one member with respect to the measured value of the battery during discharge of the battery; for during the discharge of the battery based on the said measured values and at least one parameter associated with the battery and repeatedly correcting the status of the battery components; for before the state of the battery has exceeded the threshold value of the first update time interval and in the After the state of said battery has exceeded the threshold value than the first update time interval shorter second update interval in multiple updates at the point of updating the parameters of member; and in response to updating the parameter The correction of the state of the battery components.
14.根据权利要求13所述的电池计,其中在所述电池的所述状态超过所述阈值之前所述参数的改变速率的平均值小于在所述电池的所述状态超过所述阈值之后所述参数的所述改变速率的平均值。 After the battery meter according to claim 13, wherein prior to the state of the battery exceeds the threshold value of the average value of the parameter is less than the rate of change in the state of the battery exceeds the threshold value said the average rate of change of the parameters.
15.根据权利要求13所述的电池计,其中所述电池可由端子电压对容量的曲线图表征,所述曲线图在所述阈值之前的斜率小于在所述阈值之后的斜率。 15. A battery meter according to claim 13, wherein the terminal voltage of the battery capacity by a graph representation, the slope of the curve before the slope is less than the threshold value after the threshold value.
16.根据权利要求13所述的电池计,其中在所述电池的所述状态超过所述阈值之前,电池计电路以第一电力消耗速率消耗电力;且在所述电池的所述状态超过所述阈值之后,所述电池计电路以比所述第一电力消耗速率快的第二电力消耗速率消耗电力。 16. A battery meter according to claim 13, wherein in the state before the battery exceeds the threshold value, the battery gauge circuitry to a first power consumption rate of power consumption; and in the state of the battery exceeds the After the above threshold, the battery gauge circuitry to the first power consumption rate is faster than the second rate of power consumption of the power consumption.
17.根据权利要求13所述的电池计,其中所述电池的所述状态为所述电池的充电状态百分比;且所述阈值在10%与20%之间。 Battery meter according to claim 13, wherein the state of the battery as a percentage of the battery charge status; and the threshold of 10% and 20% in between.
18.根据权利要求13所述的电池计,其中所述阈值为第一阈值;且所述用于更新所述参数的构件在所述电池的所述状态已超过所述第一阈值之后且在所述电池的所述状态已超过第二阈值之前以所述第二更新时间间隔且在所述电池的所述状态已超过所述第二阈值之后以比所述第二更新时间间隔短的第三更新时间间隔更新所述参数。 18. A battery meter according to claim 13, wherein the threshold is a first threshold value; and the following parameters for updating the member in the state of the battery has exceeded the first threshold and the before and after the state of the battery has exceeded a second threshold value to update the second time interval and in the state of the battery has exceeded the second threshold value than the second time interval shorter update section Third update update interval of the parameter.
Description  translated from Chinese
监视具有多种参数更新速率的可再充电电池 Monitoring various parameters update rate having a rechargeable battery

技术领域 TECHNICAL FIELD

[0001] 本发明涉及用于监视电池的状态的方法及设备。 [0001] The present invention relates to the status of a method for monitoring the battery and equipment.

背景技术 Background technique

[0002] 在充电或放电期间对可再充电电池的恰当控制取决于对所述电池的目前状态的准确估计,其表达为充电状态(或相反地放电深度-D0D)或剩余容量或剩余使用时间或其它适当数量。 [0002] During the charging or discharging of the rechargeable battery is properly controlled depending on an accurate estimate of the current state of the battery, which is expressed as the state of charge (depth of discharge or conversely -D0D) or the remaining capacity or remaining time or other suitable quantity. 对电池的状态的不准确估计可能导致对电池的损坏、对电池操作的主机装置中的周围电路的损坏、对主机装置的用户的伤害、主机装置中的数据的丢失及/或对电池的非常低效的使用以及其它潜在问题。 On the state of the battery inaccurate estimates may result in damage to the battery, battery-operated device to the host of the surrounding circuitry is damaged, the user of the host device damage, loss and / or the battery is very host device data inefficient use, and other potential problems.

[0003] 电池状态估计通常随主机装置或电池组中的电池燃料(气体)计电路而变。 [0003] The battery state estimation is usually supplied with the host device or a battery pack in the battery fuel (gas) gauge circuit becomes. 典型的电池燃料计需要全充电与放电循环来更新电池放电容量,此在“真正”应用的情况下很少发生,因此经常发生计示错误。 A typical battery fuel gauge full charge and discharge cycles required to update the battery discharge capacity, this under "real" conditions rarely applied, so a gauge error occurs frequently. 如果电池燃料计电路为不准确的,那么其可能高估或低估电池的剩余容量(例如,以毫安小时为单位或以充电状态百分比-soc计)。 If the battery fuel gauge circuit is not accurate, then it may overestimate or underestimate the remaining battery capacity (for example, in mAh units or percentage -soc state of charge meter). 在整个电池使用寿命中且在温度及使用负载分布曲线内提供准确剩余容量信息通常为被低估的挑战,这主要是因为电池的可使用容量随其放电率、温度、老化及自放电而变。 And provides accurate remaining capacity information and use at a temperature within the load distribution curve throughout the battery life is generally underestimated challenge, primarily because the battery capacity can be used with its discharge rate, temperature, aging and self-discharge becomes. 事实上,开发用以准确地对电池的自放电及老化对容量的影响进行建模的算法几乎不可能。 In fact, it developed to accurately battery self-discharge and aging effect on the capacity of modeling algorithm is almost impossible.

[0004] 如果电池燃料计电路显著高估电池的剩余容量,那么当事实上电池不具有剩余容量时电池燃料计电路可指示电池具有相当大量的剩余容量。 [0004] If the battery fuel gauge circuit significantly overestimate the remaining capacity of the battery, so when the battery fuel gauge circuit may indicate that the battery has a remaining capacity of the battery is not in fact have a considerable amount of surplus capacity. 在此情况中,电池可能继续放电直到其不再产生主机装置的恰当运行所必需的最小电压为止。 In this case, the battery may continue to discharge until they no longer produce the proper operation of the minimum voltage necessary for the host device so far. 主机装置接着将在无警示的情况下停机或停止工作,借此丢失(或毁坏)装置的存储器中的任何数据。 Then the host device will shut down or stop working, thereby missing memory (or destroyed) means any data without warning situation. 此数据丢失对于装置的用户来说可能为灾难性的。 This data loss is possible for the user device is disastrous. 因此,防止数据丢失是电池燃料计电路的用途之一。 Therefore, to prevent data loss is one of the uses battery fuel gauge circuit.

[0005] 另一方面,如果电池燃料计电路显著低估电池的剩余容量,那么当电池实际上仍具有相当大量的可用电荷时电池燃料计电路可指示零剩余容量。 [0005] On the other hand, if the battery fuel gauge circuit significantly underestimate the remaining capacity of the battery, so when the battery is actually still has a considerable amount of the available charge of the battery fuel gauge circuit may indicate zero remaining capacity. 然而,在此情况中电池燃料计电路将致使主机装置引起受控制系统停机以便防止数据丢失,即时数据丢失的风险事实上并非紧急的。 However, in this case, the battery fuel gauge circuit will cause the host device to cause controlled system shutdown in order to prevent data loss, the risk of data loss is not in fact instant emergency. 在此情况中不会发生损坏或数据丢失,但主机装置的用户会因装置的过早停机而不必要地感到不便且可能被误导成认为电池或主机装置未达到预期地运行。 In this situation does not occur in corruption or loss of data, but the user of the host device downtime due to premature device unnecessarily inconvenienced and may be misled to think the battery or the host device does not achieve the desired operation.

[0006] 主机装置的制造者可选择在装置中并入较大的较高容量电池以便补偿不准确电池燃料计电路,借此确保足够长的电池运行时间。 Makers [0006] The host device selectively incorporated into a larger high-capacity battery in the device to compensate for inaccuracies battery fuel gauge circuit, thereby ensuring sufficient long battery run time. 然而,电池操作的主机装置通常既定为相对小型且轻量的;而此解决方案会增加装置的大小及重量(及通常成本)。 However, battery operated devices are generally intended to host a relatively small and lightweight; and this solution increases the size and weight of the device (and typically cost). 或者,制造者可选择在主机装置中并入“优质”电池(容量较高而大小较小)。 Alternatively, the manufacturer can select the host device is incorporated in the "quality" battery (high capacity and small size). 然而,此些优质电池相对昂贵,此为非常显著的问题,因为电池通常已表示主机装置的总体成本的显著部分(例如,三分之一)Ο However, some of this high-quality battery is relatively expensive, this is a very significant problem, since the battery usually has indicated a significant part of the overall cost of the host device (for example, one third) Ο

[0007] 为了补偿剩余电池容量的潜在高估,主机装置的制造者可选择将电池燃料计电路设计为在电池仍具有显著容量时就指示零剩余电池容量,借此维持电池容量的一部分作为故障保险储备。 [0007] In order to compensate for potential overestimation of the remaining battery capacity, the manufacturer will choose the host device battery fuel gauge circuit design when the battery still has significant capacity to indicate zero remaining battery capacity, thereby maintaining a part of the battery capacity as the fault Insurance reserves. 换句话说,依据设计,电池燃料计电路可有意地低估实际电池容量以便防止高估错误及灾难性数据丢失或毁坏。 In other words, according to the design, the battery fuel gauge circuit may deliberately underestimate the actual battery capacity in order to prevent overestimation errors and catastrophic data loss or corruption. 然而,如果电池燃料计电路相对不准确,那么不可能预测何时其将高估电池容量及何时其将低估电池容量。 However, if the battery fuel gauge circuit is relatively inaccurate, it is impossible to predict when it will overestimate the battery capacity and when it will underestimate battery capacity. 因此,当电池燃料计电路的不准确度致使其低估电池容量时,设计好的低估将仅仅加剧问题,从而导致非常低效的电池使用。 Therefore, when the inaccuracy of the battery fuel gauge circuit resulting in its undervalued battery capacity, designed underestimate will only exacerbate the problem, resulting in a very inefficient battery.

[0008] 为了减轻这些问题,电池燃料计电路必须尽可能准确。 [0008] In order to alleviate these problems, the battery fuel gauge circuit must be as accurate as possible. 电池燃料计电路的准确度通常取决于用于估计电池的状态的参数的准确度。 The accuracy of battery fuel gauge circuit generally depends on the accuracy of the parameters used to estimate the battery state. 此些参数通常包含电池的内部电阻(或阻抗)、电池的开路电压(0CV)及电池的最大充电容量以及其它潜在参数。 This These parameters typically contains a battery internal resistance (or impedance), the maximum charging capacity of the battery open-circuit voltage (0CV) and batteries as well as other potential parameters. 这些参数与电池的状态之间的关系为循环的,因为不仅对电池的状态的估计取决于这些参数,而且这些参数也取决于电池的实际状态。 The relationship between these parameters and the battery status between the loop, because not only of the status of the battery depends on the estimated parameters, and these parameters depend on the actual state of the battery. 举例来说,存在递归循环,其中需要内部电池电阻(或阻抗)来获得0CV,需要0CV来获得D0D (或S0C),且需要D0D来获得内部电池电阻,依次类推。 For example, the presence of a recursive loop, which requires the internal battery resistance (or impedance) to obtain 0CV, 0CV need to obtain D0D (or S0C), and the need to obtain D0D internal battery resistance, and so on.

[0009] 换句话说,随着电池的状态改变(由于充电或放电或由于闲置时间),所述参数改变。 [0009] In other words, with the state of the battery change (due to charge or discharge or due to idle time), the parameter change. 另外,随着电池老化(通常由电池已经历的充电与放电循环的数目确定),这些参数及这些参数与电池的状态之间的关系进一步改变。 In addition, as the battery ages (usually determined by the number of battery charge and discharge cycle experience), and the relationship between these parameters and the status of these parameters between the battery further changes. 因此,可有必要周期性地更新所述参数以便重新估计电池的状态,使得将终止放电(且主机装置优雅地停机)的所估计点接近于实际所要点。 Therefore, it is necessary to periodically update the parameters in order to re-estimate the state of the battery, so that the termination of the discharge (and the host device to gracefully shut down) the estimated point closer to the actual points. (前述相关专利描述涉及更新各种参数及估计电池的状态的多种技术及设备。)以此方式,对电池的最高效使用是在不冒数据丢失的风险的情况下实现的。 (The aforementioned related patent describes the various parameters and estimates involves updating the battery state of a variety of techniques and equipment.) In this way, the most efficient use of the battery is not to take the risk of data loss situation under implementation.

[0010]由于以下事实而在参数更新的频率与总体电池性能之间存在折衷:电池燃料计电路的操作必定消耗电池容量的一部分。 [0010] by the fact that there is a tradeoff between the frequency and the parameter updating overall cell performance: operating a battery fuel gauge circuit must consume a portion of the battery capacity. 因此,参数的较频繁更新将消耗较多的电池容量,从而明显降低可用于主机装置的操作的电池容量且使得看似电池过快地放电。 Thus, more frequent updates of the parameters will consume more battery capacity, thereby significantly reducing the battery capacity can be used for the operation of the host device and so appears the battery discharges too quickly. 换句话说,必须对照对长电池放电时间的需要来平衡对更新电池的参数的需要。 In other words, it must control the need for long battery discharge time to balance the need to update the battery parameters.

[0011] 为了确保长电池放电时间,电池燃料计电路通常尽可能稀少地更新参数。 [0011] In order to ensure long battery discharge time, the battery fuel gauge circuit parameters are usually updated infrequently as possible. 在图1中以电池端子电压对剩余容量(以毫安小时为单位)曲线图102及104来图解说明此做法的典型结果。 In Figure 1, the terminal voltage of the remaining battery capacity (in mAh units) graphs 102 and 104 illustrate typical results of this approach. 曲线图102描绘电池的实例性电压对真正剩余容量。 Graph 102 depicts an exemplary battery voltage on the real remaining capacity. 曲线图104展示电池的实例性电压对所估计剩余容量。 104 graph showing an exemplary battery voltage estimated remaining capacity. 另外,展示在其处保持零容量的点106。 In addition, it displays in its capacity to maintain zero at the point 106. 还展示终止电池的放电时的电压(放电结束电压-EDV)。 Also shows when the battery discharge termination voltage (discharge end voltage -EDV).

[0012] 真正剩余容量曲线图102表示通常在实验室中确定以便断定受测试电池相对于其端子电压的实际剩余容量的实例。 [0012] The real plot 102 represents the remaining capacity is usually determined in the laboratory in order to determine the test battery terminal voltage relative to their actual instance by remaining capacity. 所估计容量曲线图104表示可根据基于在主机装置中电池的操作期间测量的端子电压、放电电流及温度的值计算剩余容量而获得的实例。 The estimated capacity graph 104 shows an example may be based on the terminal voltage measuring means in the host cell during operation, the value of the discharge current and the temperature calculated based on the remaining capacity obtained. 因此,所估计容量曲线图104包含更新用于计算剩余容量的参数的更新点108,如上文所大体描述。 Accordingly, the estimated capacity graph 104 contains updates update point for calculating the parameters of the remaining capacity of 108, substantially as hereinbefore described. 在整个放电循环中,更新点108通常以规则的时间间隔(例如,如由S0C(或D0D)的百分比界定)出现。 Throughout the discharge cycle, the update point 108 is typically at regular time intervals (for example, as indicated by S0C (or D0D) defined percentage) appears. 然而,仅在曲线图104上指示更新点108中的最后四者。 However, the instructions to update the Final Four in only 108 points on the graph 104.

[0013] 在中间的两个更新点108处,更新导致对所估计剩余容量的实质性校正,如可由曲线图104在这两个点处的突然向右水平斜率看出。 [0013] 108 points in the middle of two updates, the update results in a substantial correction of the estimated remaining capacity, such as 104 by the graph to the right level in both suddenly see the slope at the point. 在到达最后更新点108(曲线图104的最低点)之前,所估计容量显现为负的,即,在零剩余容量点106左边。 Before reaching the last update (the lowest point graph 104) point 108, the estimated capacity appears as negative, that is, the remaining capacity left in the zero point 106. 换句话说,此实例中的电池燃料计电路将在最后更新之前超过其停机点,从而使最后更新点108太晚以致不能防止过早停机。 In other words, in this example the battery fuel gauge circuit before the last update is older than its downtime point, so that the last update point 108 that it can not be too late to prevent premature shutdown.

发明内容 SUMMARY OF THE INVENTION

[0014] 在本发明的一个方面中,提供一种用于监视电池的状态的方法。 [0014] In one aspect of the present invention, there is provided a method of monitoring the status of the battery used. 在所述电池的放电期间重复地获得与所述电池相关的至少一个所测量值。 Obtaining the cell associated with the at least one measured value of the battery during the discharge repeatedly. 在所述电池的放电期间基于所述电池的先前所计算的状态、所述所测量值及所述电池的至少一个参数而重复地计算所述电池的所述状态。 Previously calculated based on the state of the battery, the battery and the values measured during the discharge of the battery of the at least one parameter and repeatedly calculating the state of the battery. 在所述电池的所述状态超过阈值之前,以第一速率更新所述电池的所述参数。 Prior to the state of the battery exceeds a threshold value, updating the parameter at a first rate of said cell. 在所述电池的所述状态超过所述阈值之后,以比所述第一速率快的第二速率更新所述电池的所述参数。 After the state of the battery exceeds the threshold value, said first rate is faster than the second rate of updating the parameter of the battery. 响应于所述参数的每一更新而校正所述电池的所述状态。 And correcting the state of the battery in response to each update of the parameters.

[0015] 在本发明的另一方面中,提供一种用于监视电池的状态的电池计电路。 [0015] In another aspect of the present invention, there is provided a battery meter circuit for monitoring battery status. 所述电路包含:至少一个输入,在所述电池的放电期间在所述至少一个输入处接收与所述电池相关的数据;及处理器,其经电连接以接收所述数据。 Said circuit comprising: at least one input, during discharge of the battery receiving at least one input associated with the data in the cell; and a processor electrically coupled to receive said data. 所述处理器执行指令,其中所述处理器:基于所述数据、所述电池的至少一个参数及所述电池的先前所修正的状态而重复地修正所述电池的所述状态;在所述电池的所述状态超过阈值之前,以第一速率更新所述参数;在所述电池的所述状态超过所述阈值之后,以比所述第一速率快的第二速率更新所述参数;及响应于所述参数的每一更新而校正所述电池的所述状态。 The processor to execute instructions, wherein said processor: based on said data, said at least one battery previously corrected state parameter and the battery and repeatedly correcting the state of the battery; in the prior to the state of the battery exceeds the threshold value, the parameter update at a first rate; in the state after the battery exceeds the threshold value, said first rate is faster than said second rate update parameters; and and correcting the state of the battery in response to each update of the parameters.

附图说明 Brief Description

[0016] 参考附图,根据对实例性实施例的描述,其它方面及特征将变得显而易见,附图中: [0016] Referring to the drawings, based on the description of exemplary embodiments, other aspects and features will become apparent from the accompanying drawings:

[0017]图1是可再充电电池的端子电压对剩余容量关系的简化曲线图的现有技术实例。 Examples of prior art [0017] FIG. 1 is a rechargeable battery of the terminal voltage of the remaining capacity of the relationship between a simplified graph.

[0018]图2是根据本发明的实施例的原理的电池供电装置的简化示意图。 [0018] FIG. 2 is a schematic diagram of a simplified schematic of an embodiment of the present invention is a battery-powered device.

[0019]图3是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的电池组的简化示意图。 [0019] FIG. 3 is a simplified schematic diagram of a battery-powered device for the embodiment of the present invention is shown in Figure 2 shows the use of the battery pack.

[0020]图4是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的可再充电电池的电压对容量关系的简化曲线图。 [0020] FIG. 4 is a rechargeable battery voltage battery power supply device for an embodiment of the present invention is shown in Figure 2 for use in relation to the capacity of a simplified graph.

[0021]图5是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的可再充电电池的电阻缩放因子对充电状态关系的简化曲线图。 [0021] FIG. 5 is a scaling factor for the state of charge of a simplified graph showing the relationship between the battery-powered device for the embodiment of the present invention is shown in Figure 2 shows the use of rechargeable batteries of resistance.

[0022]图6是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的可再充电电池的电阻对充电状态关系的简化曲线图。 [0022] FIG. 6 is a rechargeable battery of the resistance of the battery-powered device for the embodiment of the present invention is shown in Figure 2 shows the state of charge of the relationship between the use of a simplified graph.

[0023]图7是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的可再充电电池的端子电压对剩余容量关系的简化曲线图。 [0023] FIG. 7 is a rechargeable battery terminal voltage of the battery-powered device for the embodiment of the present invention is shown in Figure 2 shows the relationship between the use of the remaining capacity of a simplified graph.

[0024]图8是根据本发明的实施例的供在图2中所展示的电池供电装置中使用的用于监视电池的状态的程序的简化流程图。 [0024] FIG. 8 is a simplified flow chart of a battery-operated apparatus for the embodiment of the present invention is shown in Figure 2 is used for monitoring the battery state of the program.

具体实施方式 detailed description

[0025] 图2及3中分别展示主机电池供电电子装置110 (例如,蜂窝电话/无绳电话、便携式计算机、手持式游戏装置等)及电池组112(供在主机装置110中使用)的简化示意图。 [0025] FIG. 2 and 3 respectively show host battery-powered electronic device 110 (eg, a cellular telephone / cordless phones, portable computers, handheld gaming devices, etc.) and the battery pack 112 (for use in a host device 110) is a simplified schematic . 主机装置110通常包含电池组112及负载/主机电路114且有时连接到AC适配器/充电器116。 The host device 110 typically comprises a battery pack 112 and the load / host circuit 114, and sometimes connected to an AC adapter / charger 116. 电池组112通常包含一个或一个以上电池单元(电池)118、电池管理电路120及电池燃料计电路122以及其它可能组件。 The battery pack 112 typically include one or more battery cells (battery) 118, the battery management circuit 120 and a battery fuel gauge circuit 122, and other possible components.

[0026] 在简化描述中,正电池组电压线Vpackp及负电池组电压线Vpackn提供电池组112、负载/主机电路114与AC适配器/充电器116之间的电力连接。 [0026] In a simplified description, the positive battery voltage wire Vpackp and negative battery voltage line Vpackn provide a battery pack 112, the load / power connection to the host circuit 114 and AC adapter / charger 116 between. 当主机装置110连接到AC适配器/充电器116时,AC适配器/充电器116提供用于主机装置110的运行及电池组112中的电池118的充电的电力。 When the host device 110 is connected to the AC adapter / charger 116, AC adapter / charger for charging 116 provided in the host device operation and battery pack 110 118 112 battery power. 另一方面,当主机装置110不连接到AC适配器/充电器116时,电池组112将电力供应(放电)到主机装置110的组件(例如,负载/主机电路114)。 On the other hand, when the host device 110 is not connected to the AC adapter / charger 116, the battery pack 112 to the power supply (discharge) to the components on the host device 110 (eg, load / host circuit 114). 因此,在此情形中,由于主机电路114执行主机装置110的“主要”功能,因此电池组112 “主要”将电力供应到主机电路114。 Thus, in this case, since the host apparatus 114 to execute the host circuit "main" function 110, and therefore the battery pack 112 "major" to the power supply circuit 114 to the host. 然而,电池组112还将电力供应到电池组112自身的组件(例如,电池管理电路120、电池燃料计电路122等),因此可在电池118的放电期间维持电池组112的恰当运行。 However, the battery pack 112 will be supplied to the power module 112 itself (e.g., battery management circuit 120, a battery fuel gauge circuit 122, etc.) of the battery pack, and therefore can maintain the proper operation of the battery pack 112 in the battery 118 during discharging.

[0027] 期望电池组112的组件从电池118消耗相对少的电力,使得电池118的充电容量的最大化或优化量可用于主机电路114。 [0027] The desired components of the battery pack 112 consume relatively little power from the battery 118, so that the battery charging capacity to maximize or optimize the amount of 118 114 can be used to host circuit. 还期望燃料计电路122产生尽可能准确的对电池118的剩余容量的估计,使得主机装置110可在不冒数据丢失的风险的情况下最高效地利用电池118,如背景技术中所描述。 It is also desirable to produce fuel gauge circuit 122 as accurately as possible to estimate the remaining capacity of the battery 118, so that the host device 110 can be the most efficient use without risking data loss of battery 118, as described in the background art. 另外,对电池118的特性/参数(例如,S0C、内部阻抗、剩余容量等)的准确估计还使得主机装置110能够通过以下操作来有效地管理并优化其电力使用:关断非关键子系统、在电池118接近放电结束时减少电力设定或降低性能,及/或在电池阻抗过高(即,电池118已显著老化)的情况下防止启用高电流操作。 Further, an accurate estimate of the battery 118 is characteristic / parameter (e.g., S0C, internal impedance, remaining capacity, etc.) also allows the host apparatus 110 can efficiently manage and optimize power usage by the following operation: off non-critical subsystem, reduce power setting or reduce performance, and / or prevent enable high current operation in battery impedance is too high (ie, the battery 118 has been significantly aging) when the battery case 118 close to the discharge end.

[0028] 为了平衡这些具竞争性的目标,燃料计电路122优选地以取决于电池118的状态的多种速率更新电池118的一个或一个以上特性参数(例如阻抗或电阻等)。 [0028] In order to balance these competitive goals, the fuel gauge circuit is preferably 122 to 118 more rate depends on the battery condition of a battery 118 updates one or more parameters (e.g., impedance or resistance, etc.). 因此,当估计电池118的状态(例如,剩余容量、充电状态或放电深度以及其它)足够高以致因高估所致的数据丢失的风险极低时,燃料计电路122优选地以较慢速率更新所述参数。 Thus, when the battery state estimation 118 (e.g., remaining capacity, state of charge or discharge depth and other) is high enough due to a very low risk of data loss due to overestimation of the fuel gauge circuit 122 is preferably a slower rate updating the parameter. 然而,当电池118的所估计状态达到或超过某一阈值时,增加参数更新速率,S卩,减小更新之间的时间间隔。 However, when the estimated state of the battery 118 reaches or exceeds a certain threshold, increase the parameter update rate, S Jie, reduce the time interval between updates. 因此,在超过阈值之前由燃料计电路122消耗的电力相对较低,且在超过阈值之后对电池118的状态的估计的准确度相对较高。 Thus, before the count exceeds the threshold by a fuel circuit 122 of the power consumption is relatively low, and after exceeding the threshold value is relatively high for the battery 118 state estimation accuracy. 随着电池118的状态变得接近于放电终止点,当可能必须起始主机装置110的受控制停机且有效电力管理较为关键时,在超过阈值之后由燃料计电路122消耗的电力的增加是对电池118的状态的估计的较大准确度的折衷。 With the state of the battery 118 becomes close to the discharge end point, when you may have to start by the host device 110 of the control and effective power management is more critical downtime, increasing power after exceeding the threshold by a fuel gauge circuit 122 is consumed compromise the accuracy of estimates of the state of the larger battery 118.

[0029] 电池组112 (例如,电池管理电路120及/或燃料计电路122)通常根据适合通信协议且通过适当接口电路(未展示)经由双向数字总线124与主机装置110中的其它组件(例如,负载/主机电路114)通信。 [0029] The battery pack 112 (e.g., battery management circuit 120 and / or the fuel gauge circuit 122) is generally in accordance with appropriate communication protocol and via suitable interface circuitry (not shown) via a bi-directional digital bus 124 and the host device 110 other components (e.g. load / host circuit 114) communications. 双向数字总线124可为标准SMBus (智能总线)、标准I2C(集成电路间)总线、另一串行或并行接口或者任何其它适当标准或专有通信构件。 Bi-directional digital bus 124 may be a standard SMBus (intelligent bus) standard I2C (Inter-Integrated Circuit) bus, another serial or parallel interface or any other suitable standard or proprietary communications components.

[0030] 电池组112通常出于多种原因而与主机装置110中的其它组件通信。 [0030] The battery pack 112 is generally due to host device 110 and the communication with the other components in a variety of reasons. 举例来说,当如燃料计电路122所确定的电池118的状态达到或超过终止点时,可将用以起始主机装置110的受控制停机的指令传输到主机电路114。 For example, when the state of the fuel gauge circuit 122, such as a battery 118 is determined to meet or exceed the end point, it can be used to start a controlled shutdown instruction by the host device 110 is transmitted to the host circuit 114. 另外,可将关于电池118的状态的数据传输到主机电路114以使得能够将燃料计显示/图标/指示器呈现给主机装置110的用户,因此所述用户可在主机装置110自身停机之前主观地预期何时给电池118再充电。 Alternatively, the data about the status of the battery 118 to the host circuit 114 to enable the fuel gauge displays / icons / indicators to the user of the host device 110, and therefore the user can subjectively before the host device 110 itself downtime When the battery 118 is expected to be recharged. 这些实例两者依赖于对电池118的状态的准确估计。 These two examples depend on accurate estimates of the status of the battery 118. (上文已论述对在起始受控制停机之前对电池118的状态的准确估计的需要。) (Already discussed above, for an accurate estimate of the state of the battery 118 before starting a controlled shutdown in need.)

[0031] 关于燃料计显示/图标/指示器,即使其通常向用户提供电池118的状态的相对较低分辨率(即,低准确度)指示,对电池118的状态的较准确估计(反映在燃料计显示/图标/指示器中)也可为用户产生关于主机装置110的较积极体验。 [0031] For the fuel gauge display / icon / indicator, even though it is generally available to the user of battery status 118 is relatively low resolution (ie, low accuracy) indication of the state of the battery 118 is a more accurate estimate (as reflected in fuel gauge display / icon / indicator) users can also generate a more positive experience on the host device 110. 特定来说,对电池118的充电状态的非常不准确的高估(如燃料计显示/图标/指示器所指示)可导致用户延误将主机装置110插入到AC适配器/充电器116中,借此增加使用户对主机装置110的停机感到不便及懊恼的可能性。 In particular, the charge state of the battery 118 is very inaccurate overestimation (eg fuel gauge display / Icon / Indicator indicated) can cause the user to delay the host device 110 is inserted into the AC adapter / charger 116, thereby increase enables users to stop the host device 110 of inconvenience and the possibility of chagrin. 另一方面,对充电状态的非常不准确的低估可能不必要地且不便地致使用户因认为需要早于防止停机所真正必要地给电池118再充电而略感恐慌。 On the other hand, on the state of charge is very inaccurate and underestimate may unnecessarily cause inconvenience to the user because of that need early on to prevent downtime really necessary to recharge the battery 118 and somewhat panic.

[0032] 应理解,可使用许多不同的电路组件类型及组合来形成图2及3中所展示的电路且执行本文中所描述的功能。 [0032] It should be understood, you can use many different types of circuit components and combined to form a 2 and 3 as shown in the circuit diagram and perform the functions described herein. 因此,图2及3中所展示且本文中所描述的特定电路组件及互连件图解说明许多可能实施例中的仅一者的简化版本且未必既定限制权利要求书的范围。 Thus, FIG. 2 and 3 as shown and described herein specific circuit components and interconnects illustrate many cases only a simplified version of one possible embodiment and is not intended to limit the scope of the claimed requirements. 另外,美国专利6,789,026,6,832, 171及6,892,150 (上文所提及)提供对可并入于主机装置110及/或电池组112中的实例性电路的额外描述。 Further, U.S. Patent 6,789,026,6,832, 171 and 6,892,150 (mentioned above and) provides the host device 110 may be incorporated within and / or in the battery pack 112 described additional exemplary circuit.

[0033] 对于所图解说明的实施例,除电池管理电路120及燃料计电路122之外,电池组112通常还包含充电晶体管126、放电晶体管128、电流感测电阻器130及温度传感器132。 [0033] For the illustrated embodiment, in addition to the battery management circuit 120 and a fuel gauge circuit 122, the battery pack 112 further comprises a charge transistor 126 typically, discharge transistor 128, a current sensing resistor 130 and temperature sensor 132. 电池管理电路120通常包含低压降(LD0)电压调节器电路134、控制器电路136、一个或一个以上驱动器电路138及电压感测电路140以及其它可能组件。 Battery management circuitry 120 typically comprises a low pressure drop (LD0) a voltage regulator circuit 134, the controller circuit 136, one or more drive circuit 138 and voltage sense circuit 140, and other possible components. 燃料计电路122通常包含一个或一个以上模/数转换器(ADC) 142、微处理器144及至少一个存储器146以及其它可能组件。 Fuel gauge circuit 122 typically includes one or more analog / digital converter (ADC) 142, a microprocessor 144 and memory 146, and at least one other possible components.

[0034] LD0电压调节器电路134接收电池118的正端子电压(Vbatt)。 The positive terminal of the voltage [0034] LD0 voltage regulator circuit 134 receives a battery 118 (Vbatt). LD0电压调节器电路134通常从电池118的端子电压(Vbatt)提供用于电池管理电路120及燃料计电路122的组件以及其它可能组件的操作的电力。 LD0 voltage regulator circuit 134 from the battery terminal voltage is typically (Vbatt) 118 is provided for power management circuit 120 and a battery fuel gauge circuit 122, and other possible components of the assembly operation.

[0035] 除其它功能外,电池管理电路120 (有时称为前端电路或芯片)通常监视并管理电池118的充电及放电。 [0035] Among other functions, the battery management circuit 120 (sometimes referred to as the front-end circuit or chip) typically monitor and manage the charging and discharging of the battery 118. 因此,在控制器电路136的控制下,驱动器电路138在线148及150上产生栅极驱动电压以分别激活及去激活充电晶体管126及放电晶体管128。 Thus, under the control of control circuit 136, the drive circuit 138 generates the gate line 148 and 150 respectively on the drive voltage activation and deactivation of the charge transistor 126 and discharge transistor 128. 充电晶体管126及放电晶体管128的此操作通过线Vpackp控制电池118的充电及放电。 Charge transistor 126 and discharge transistor 128 of this by wire Vpackp control of charging and discharging the battery 118.

[0036] 举例来说,电压感测电路140可为电平转变器电路或其它适当装置。 [0036] For example, the voltage sensing circuit 140 may be a level shift circuit or other suitable means. 在所图解说明的实施例中,电压感测电路140接收电池118的正端子电压(Vbatt)以便测量电池118的端子电压。 In the embodiment illustrated, the positive terminal of the voltage sensing circuit voltage (Vbatt) 140 receiving the battery 118 in order to measure the terminal voltage of the battery 118. 电压感测电路140的输出为表示电池118的端子电压的模拟电压。 Output voltage sensing circuit 140 is a battery terminal voltage of 118 analog voltage. (在其它实施例中,电压感测电路140可通过适合电路耦合以测量跨越电池118中所包含的个别单元中的一者或一者以上的电压。接着,可进行适当计算以确定电池118的端子电压。) (In other embodiments, the voltage sense circuit 140 can be measured by a suitable circuit coupled to the battery 118 across the individual cells contained in one or more of the voltage may then be calculated to determine the appropriate battery 118 terminal voltage.)

[0037] 根据本文中所描述且(任选地)在上文参考的美国专利中所描述的功能,电池管理电路120的控制功能中的一些控制功能响应于来自燃料计电路122的指令(例如,各种配置、安全与控制信息)而发生。 [0037] According described herein, and (optionally) function in the reference above as described in U.S. Patent, the battery management circuit 120 of the control functions of some of the control functions in response to an instruction from the fuel gauge circuit 122 (e.g. various configurations, security and control information) occurs. 电池管理电路120与燃料计电路122之间的通信(例如,分别通过控制器电路136及微处理器144)通常经由另一适当双向数字总线152而发生。 Battery management circuit 120 and the communication between the fuel gauge circuit 122 (e.g., by the controller circuit 136, respectively, and the microprocessor 144) typically occurs via another suitable bi-directional digital bus 152.

[0038] 燃料计电路122接收数据、所测量值或信号,例如电压感测电路140的输出、温度传感器132的输出及跨越电流感测电阻器130的电流感测电压以及其它可能输入电压。 [0038] Fuel gauge circuit 122 receives the data, the measured values or signals, e.g., an output voltage sensing circuit 140, output across the current sensing resistor and the temperature sensor 132 of the current sensing voltage 130 as well as other possible input voltages. 将这些输入电压供应到ADC142中的适当者。 These input voltage supplied to the ADC142 the appropriate person. ADC142通常将所述输入电压转换为端子电压、放电电流及电池温度以及其它可能所测量值的数字当量。 ADC142 typically the input voltage is converted to a terminal voltage, discharge current and battery temperature as well as the digital equivalent of other possible measured values.

[0039] 在燃料计电路122内,ADC142、微处理器144及存储器146通常经由又一适当双向数字总线154彼此通信。 [0039] In the fuel gauge circuit 122, ADC142, microprocessor 144 and memory 146 typically via another suitable bidirectional digital bus 154 communicate with each other. 通过总线154,微处理器144存取一个或一个以上程序156 (存储于存储器146中),微处理器144借助所述程序执行或控制燃料计电路122的各种功能。 Via the bus 154, the microprocessor 144 accesses one or more program 156 (stored in the memory 146), the microprocessor 144 to perform various functions or control the fuel gauge circuit 122 by means of the program. 根据程序156中的一者或一者以上,微处理器144存取所接收的所测量值的由ADC142产生的数字当量以及保持于存储器146中所存储的一个或一个以上数据库158中的数据。 According to the procedure 156 one or more of, the microprocessor 144 accesses ADC142 generated by the received digital equivalents of the measured values and to maintain one or more data database 158 stored in the memory 146 in. 总线154还优选地通过适当接口电路耦合到双向数字总线124。 Bus 154 is also preferably coupled through suitable interface circuitry 124 to a two-way digital bus.

[0040] 数据库158通常包含各种表。 [0040] Database 158 typically includes a variety of tables. 一个此种表的实例含有电池118的随电池118的所测量值及参数或可根据所测量值及参数计算的电池118的状态中的一者或一者以上而变的开路电压(OCV)。 The measured values and the measured parameters or status values and calculated parameters of the battery 118 to one or more of which change according to the open-circuit voltage of a battery containing such an instance table 118 with the battery 118 (OCV). 例如,所述表可具有取决于电池118的SOC或DOD的OCV,如在制造电池118之前以实验方式所确定。 For example, the table may have depends on the battery SOC or DOD 118 of OCV, such as in the manufacture of battery 118 before experimentally determined. 另一实例性表可含有电池118的随SOC(或DOD)及温度而变的电阻或阻抗。 Another example of the table may contain a battery 118 with SOC (or DOD) and temperature-dependent resistance or impedance.

[0041] 由微处理器144在程序156的控制下使用数据库158执行的一组实例性程序可包含当据推测电池118已在相对长的松弛时间周期(即,电池118不活动或极低活动的周期)之后达到平衡状态时根据所测量值确定电池118的0CV。 [0041] by the microprocessor used in the control program 144 156 158 to perform a set of database exemplary program may include when presumably the battery 118 has a relatively long relaxation time period (ie, the battery 118 inactive or very low activity The cycle) after 0CV equilibrium state when the measured value is determined according to the battery 118. 在如此确定0CV的情况下,从数据库158中的0CV对S0C表读取S0C。 In the case of so determined 0CV, 0CV 158 from the database table read on S0C S0C. 以此方式,获得在主机装置110的操作(S卩,电池放电)期间使用库仑计数技术更新的初始soc值(soc_o)。 In this way, access to technology updates Coulomb count initial soc value (soc_o) during the operation of the host device 110 (S Jie, battery discharge). 在于放电期间如此更新SOC且确定S0C已达到或超过更新点之后,从0CV对S0C表读取经更新0CV。 After the update so that during the discharge SOC and determining S0C update point has been reached or exceeded, S0C table to read from 0CV updated 0CV. 借助经更新0CV以及所测量端子电压及平均放电电流,计算电池118的电阻。 With the updated 0CV and the measurement terminal voltage and average discharge current is calculated resistance of the battery 118. 借助所计算电阻,更新电阻表(例如,电阻对S0C及温度)以便执行恰当IR校正,因此可估计到放电结束的剩余时间。 With the calculated resistance, resistance table update (for example, resistance to S0C and temperature) in order to perform the appropriate IR correction, so you can estimate the time remaining to the end of the discharge. (前述美国专利申请案提供执行这些计算及程序中的一些计算及程序的实例。) (The aforementioned U.S. patent application to perform these calculations and provide examples of some calculation programs and procedures.)

[0042] 根据本发明的各种实施例,在电池118的一个或一个以上状态(例如,SOC、D0D、0CV、端子电压等)超过阈值之后,增加在放电期间更新一个或一个以上参数(例如,电阻、阻抗等)的速率(或减小参数更新之间的时间间隔)。 [0042] According to various embodiments of the present invention, after the battery 118 in a state of one or more (e.g., SOC, D0D, 0CV, terminal voltage, etc.) exceeds the threshold value, increase the update one or more parameters during discharge (e.g. , the rate of resistance, impedance, etc.) (or reduce the time interval between updates of the parameter). 图4、5及6中所展示的曲线图帮助图解说明用于如何确定阈值的优选方法。 Figures 4, 5 and 6 are shown in the graph help illustrate how to determine the preferred method for the threshold. 这些曲线图未必按比例绘制。 These graphs are not necessarily drawn to scale. 而是,其经绘制以突出显示实例性电池118的某些特性,所述特性有助于确定如何设定电池118的为确定何时改变参数更新速率或时间间隔而选择监视的特定状态的阈值。 Instead, its been drawn to highlight certain characteristics of an exemplary battery 118, the feature helps to determine how to set the threshold value of the battery 118 to determine when to change the parameter update rate or time interval selected to monitor a particular state .

[0043] 图4展示电池端子电压(以伏或毫伏为单位)对已使用电池容量(以安小时或毫安小时为单位)的三个实例性简化曲线图160、162及164。 [0043] Figure 4 shows the battery terminal voltage (in volts or millivolts) have been using the battery capacity (in An hour or milliampere hours) three instances of a simplified graph 160, 162 and 164. 第一曲线图(0CV)160是针对电池118的0CV,因此其表示电池118的端子电压对已使用容量的理论最大值。 The first graph (0CV) 160 118 for battery 0CV, thus representing a terminal voltage of the battery 118 has been used for the theoretical maximum capacity. 第二曲线图(Cycle_l) 162是针对电池118的第一放电循环期间的端子电压。 The second graph (Cycle_l) 162 is for the terminal voltage of the first discharge cycle battery 118 period. 第三曲线图(Cycle_N) 164是针对电池118的假设第N放电循环期间的端子电压。 The third graph (Cycle_N) 164 is for the terminal voltage of the battery 118 is assumed during the first N-discharge cycle. 如可看出,针对每一曲线图160到164,随着已使用电池容量增加,电池118的端子电压减小。 As can be seen, for each curve 160-164, with the use of the battery capacity has been increased, the terminal voltage of the battery 118 is reduced.

[0044] 图4中还指示放电结束电压(EDV)。 [0044] FIG. 4 also indicates the end of the discharge voltage (EDV). 所述EDV表示电池118的在主机装置110必须优雅地停机以便防止电池118的端子电压一直减小到主机装置110的电子组件将不再恰当地操作或将触发主机装置110的突然停机借此可能丢失或毁坏数据的点时或之前的端子电压。 The EDV expressed in the host device 110 to gracefully shut down the battery 118 in order to prevent the terminal voltage of the battery 118 has been reduced to the electronic components on the host device 110 will no longer operate properly or will trigger the sudden shutdown of the host device 110 may take When data is lost or destroyed point on or before the terminal voltage. 因此,第一曲线图(0CV) 160与EDV交叉的点表示电池118的理论最大容量(Q_max)。 Thus, the first graph (0CV) 160 points and EDV cross represents the theoretical maximum capacity of the battery 118 (Q_max). 另一方面,第二曲线图162及第三曲线图164与EDV交叉的点分别表示在第一放电循环及第N放电循环期间电池118的可使用容量(Q_use_l及Q_use_N)。 On the other hand, and a second intersecting point and EDV third graph graph 162 164 respectively during the first and second N-discharge cycle discharge cycle usable capacity (Q_use_l and Q_use_N) battery 118.

[0045] 第一曲线图(0CV) 160分别与第二曲线图(V_bat_l)162或第三曲线图(V_bat_N) 164之间的垂直差IR_1或IR_N指示由于电池118的内部电阻或阻抗所致的IR压降。 [0045] The first graph (0CV) 160 with the second graph (V_bat_l) 162 or the third graph (V_bat_N) vertical difference between IR_1 164 or 118 IR_N indicates the battery caused by internal resistance or impedance IR drop. 如可看出,由于电池118的内部电阻或阻抗所致的IR压降随着电池118的放电循环数目的增加(即,“老化”)而增加(例如,从IR_1到IR_N)。 As can be seen, IR 118 due to the battery caused by internal resistance or impedance drop with an increase in the number of discharge cycles (i.e., "aged") to increase (e.g., from IR_1 to IR_N) battery 118. 因此,可使用容量随着电池118的老化而减小(例如,从Q_use_l到Q_use_N)。 Therefore, you can use the battery capacity with the aging 118 decreases (for example, from Q_use_l to Q_use_N).

[0046] 每一曲线图160到164的斜率在其末尾部分166内与(大概)中间部分168相比通常相当显著地增加。 Slope [0046] 160-164 each graph in its end section 166 and (presumably) compared to the middle portion 168 is usually quite a significant increase. 因此,曲线图160到164在接近EDV处开始较快地减小。 Hence, the graph 160-164 decreases rapidly near the start of the EDV. 此改变通常是由于电池118的参数中的一者或一者以上的增加的改变速率所致。 This is usually due to the battery 118 changes the parameters of one or more of an increase in the rate of change due. 另外,由于所述参数中的一者或一者以上在末尾部分166中较快速地改变,因此在参数更新点之前参数的所计算值的准确度的不确定性较大,从而导致对基于所述参数的其它电池特性的估计的较大不准确度。 In addition, because the parameters of one or more of the relatively rapid change at the end of section 166, so before parameter update point accuracy of the calculated value of the parameter greater uncertainty, leading to the basis of the greater inaccuracy estimation of said parameter other battery characteristics. 因此,期望在进入末尾部分166之前或在末尾部分166的大约开头处增加更新所述参数的速率。 Therefore, it is desirable or increase the update rate of the parameters at the end portion 166 at about the beginning of the end section 166 before entering. 换句话说,优选地,设定电池118的所监视状态的阈值,使得参数更新速率在末尾部分166处、在其之前或在其后立即增加。 In other words, it is preferable to set thresholds to monitor the status of the battery 118, so that parameter update rate at the end of section 166, followed by an immediate increase in its prior, or both.

[0047] 图5展示电池118的电阻缩放因子对充电状态(S0C)的实例性简化曲线图170。 Resistance [0047] Figure 5 shows a scaling factor of 118 battery state of charge (S0C) examples of a simplified graph 170. 所述电阻缩放因子是在更新电阻表内的电池118的内部电阻或阻抗值之后此参数即刻乘以或以其缩放的值。 After the resistance scaling factor is updated internal resistance or impedance value of the resistor within a table cell 118 is multiplied by this parameter or its immediate scaling values. 因此,电阻缩放因子1.0意指所述表中的电阻值根本不改变。 Thus, the scaling factor of 1.0 means that the resistance of the resistor values in the table do not change. 电阻缩放因子与值1.0相差越大,对表中的电阻值的改变就越大。 Resistance scaling factor with a value of 1.0 greater the difference, changes to the table, the greater the resistance. 如可看出,随着电池118的充电状态减小,电阻缩放因子从值1.0偏离。 As can be seen, along with the charge state of the battery 118 is reduced, the resistance scaling factor deviation from the value of 1.0. 在近似点172处,随着电池118的充电状态进一步减小,电阻缩放因子开始甚至更快地从值1.0偏离。 At approximately 172 points, with the charge state of the battery 118 is further reduced, the scaling factor resistance began even faster deviate from the value of 1.0. 因此,随着电阻缩放因子甚至更快地从值1.0偏离,此参数的准确度的不确定性更大,且在每一参数更新点之前基于此参数对电池118的任何状态的估计的不准确度更大。 Thus, as the resistance scaling factor even faster deviation from the value of 1.0, the accuracy of this parameter is greater uncertainty, and based on this parameter to any state of the battery 118 estimated before each parameter update point is not accurate greater degree. 因此,期望在点172处或之前(例如,在电池118的S0C的范围174内)设定参数更新速率改变阈值。 Therefore, it is desirable or before the point 172 (for example, within the scope of S0C battery 118 174) is set to change the threshold parameter update rate.

[0048] 图6展示电池118的内部电阻(以欧姆为单位)对S0C的实例性简化曲线图176。 [0048] Figure 6 shows the battery's internal resistance (in ohms) of S0C an exemplary simplified graph 176 118. 如可看出,曲线图176展示,虽然内部电阻在S0C的完全范围中稍有变化,但电池118的内部电阻在S0C接近零时急剧增加(曲线图176的左端)。 As can be seen, the graph 176 shows, although a slight change in the internal resistance of the complete range of S0C, but the internal resistance of the battery 118 is a sharp increase in S0C near zero (left graph 176). 因此,在S0C接近零时,此参数的准确度的不确定性更大,且在每一参数更新点之前基于此参数对电池118的任何状态的估计的不准确度更大。 Therefore, S0C close to zero, the greater the accuracy of this parameter uncertainty, and before each parameter update point based on this parameter to any state of the battery 118 estimated inaccuracy greater. 因此,期望在电池118的内部电阻急剧增加之前(例如,在电池118的S0C的范围178内)设定参数更新速率改变阈值。 Accordingly, it is desirable before a sharp increase in the internal resistance of the battery 118 (e.g., within the range of cells 118 S0C 178) to change the setting parameter update rate threshold.

[0049] 实验已展示,应在其处增加参数更新速率的适合阈值是在约10%与20%之间的S0C值处。 [0049] Experiments have shown, it should increase the parameter update rate at which the threshold is appropriate S0C value at between about 10% and 20%. 另外,曲线图160、162、164、170及176支持在S0C的此范围内对阈值的设定。 In addition, the graph 160,162,164,170 and 176 support threshold is set within this range S0C. 然而,应理解,可使用电池118的其它状态来确定适当阈值,且可将所述阈值设定为实验及经验可指示的其它值或其它范围内以便在对电池118的状态的估计的准确度与燃料计电路122的电力消耗之间达成合理平衡。 However, it should be understood that other state of the battery 118 may be used to determine the appropriate threshold and the threshold can be set so that the state of the battery 118 of the estimated accuracy within the range of other value or other experiments and experience may indicate the to achieve a reasonable balance between the fuel gauge circuit 122 power consumption.

[0050] 图7展示针对一放电循环的电池端子电压对所估计剩余容量(以安小时或毫安小时为单位)的曲线图180,在所述放电循环期间以一种以上速率来更新电池118的参数(例如,电阻、阻抗等)中的一者或一者以上。 [0050] FIG. 7 shows for a discharge cycle of the battery terminal voltage of the estimated remaining capacity (mAh An hour or units) of the graph 180, during the discharge cycle update rate in more than one battery 118 parameters (e.g., resistance, impedance, etc.) of one or more. 如在图1中,还展示电池的实例性电压对真正剩余容量的曲线图102。 As shown in Figure 1, also shows an exemplary voltage battery remaining capacity of the real curve 102 in FIG. 另外,展示在其处保持零容量的点106。 In addition, it displays in its capacity to maintain zero at the point 106. 还展示终止电池的放电时的电压(放电结束电压-EDV)。 Also shows when the battery discharge termination voltage (discharge end voltage -EDV).

[0051] 如前所述,真正剩余容量曲线图102表示通常在实验室中确定以便断定受测试电池相对于其端子电压的实际剩余容量的实例。 [0051] As mentioned earlier, the real plot 102 represents the remaining capacity is usually determined in the laboratory in order to determine the test battery terminal voltage relative to their actual instance by remaining capacity. 所估计剩余容量曲线图180表示可根据基于数据库158(图3)中的表以及在主机装置110中电池118的操作期间测量的端子电压、放电电流及温度的值计算剩余容量而获得的实例,如上文所描述。 The estimated remaining capacity 180 shows an example of a graph can be calculated based on the remaining capacity of the database 158 (FIG. 3) in the table and the terminal voltage during operation of the host device 110 in the battery 118 measured values of discharge current and temperature obtained according to, as described above. 因此,所估计剩余容量曲线图180包含更新用于计算剩余容量的一个或一个以上参数的更新点,如上文所大体描述。 Therefore, the estimated remaining capacity graph 180 contains an update update point for calculating the remaining capacity of the one or more parameters, substantially as hereinbefore described. 另外,所估计剩余容量曲线图180包含如上文所描述优选地在一范围182内的阈值点,在所述阈值点之前(在其上面及右边)参数更新速率小于在所述阈值点之后的参数更新速率,即,参数更新时间间隔在阈值点之前比其在此后大。 In addition, the estimated remaining capacity graph 180 contains the above is preferably within a range of 182 threshold point described, before the threshold point (in its top and right) parameter update rate is less than the arguments after the threshold point update rate, ie, the parameter update time interval thereafter until the threshold point is greater than its.

[0052] 由于参数更新速率的改变,针对曲线图180的在阈值点之后的部分对剩余容量的估计的校正在用于曲线图102及180的分辨率下并不明显,特别是在与现有技术曲线图104(图1)相比时,S卩,不存在曲线图180的明显突然水平斜率。 [0052] due to changes in the parameters of the update rate, for the part after the threshold point of the graph correction of the estimated 180 remaining capacity in the plot for the next resolution 102 and 180 is not obvious, especially in the existing Technical graph 104 (FIG. 1), when compared, S Jie, there is no graph 180 is significantly sudden level slope. 另外,在剩余容量接近零时,真正剩余容量曲线图102及所估计剩余容量曲线图180显现为收敛。 In addition, the remaining capacity is near zero, real remaining capacity graphs 102 and the estimated remaining capacity graph 180 appears as convergence. 换句话说,参数更新速率的增加将对电池118的状态的估计的准确度提高到估计计算中的误差接近零的点。 In other words, the estimated accuracy of the state of the parameter update rate increase will increase the battery 118 to the calculation of the estimated error near zero point. 因此,所估计剩余容量曲线图180更加接近于真正剩余容量曲线图102在其处交叉的点与放电结束电压(rnw)交叉,因此可较接近于真正需要起始受控制系统停工程序的点而起始所述程序,借此最优地利用完全电池容量。 Therefore, the estimated remaining capacity graph 180 closer to the real remaining capacity curve 102 intersect point at which the discharge end voltage (rnw) cross, thus closer to the real needs of a controlled system shutdown starting point program starting the program, thereby the optimal use of the battery capacity fully.

[0053] 取决于实施例,在阈值点之前及之后的时间间隔长度通常由S0C (或D0D)或电池118的其它适当状态的百分比界定。 [0053] Depending on the embodiment, the time interval length before and after the threshold point usually consists S0C (or D0D) or other appropriate state of battery 118 percentage defined. 举例来说,在阈值点之前,参数更新点可在S0C的10%的每个倍数处出现。 For example, before the threshold point, parameter update point may appear in S0C 10% of each of multiples. 在阈值之后,更新点可在3.3%的每个倍数处出现,借此将更新时间间隔减少到其在阈值之前的值的三分之一。 After the threshold value, the update point can occur at multiples of 3.3% each, whereby the update interval is reduced to one-third of its value before the threshold value. 这些特定数值仅出于说明性目的而给出且并不既定限制本发明的范围。 These specific values are given for illustrative purposes only and are not intended to limit the scope of the present invention.

[0054] 图8中展示并入到本发明的实施例的用于在电池供电主机装置(例如,110)中在可再充电电池(例如,118)的放电期间监视所述电池的状态的实例性程序184。 [0054] FIG. 8 shows an embodiment of the present invention is incorporated in a used (e.g., 110) in a rechargeable battery (e.g., 118) of the battery state monitoring during the discharge of the battery-powered instances host device 184 procedures. 在一些实施例中,程序184作为程序156中的一者或一者以上存储于存储器146中。 In some embodiments, the program 184 as a program 156 in the one or more stored in the memory 146. 程序184执行多种功能,所述功能通常包含获得与电池118相关的至少一个所测量值、在数据库158中的表中的一者或一者以上中查找值、在适当时修正/重新计算电池118的至少一个状态(例如,S0C、D0D、剩余容量等)、更新电池118的一个或一个以上参数及在电池118的状态达到或超过阈值时改变参数更新速率。 Program 184 performs various functions, the function typically contains at least one 118-related measurements obtained with the battery, in the 158 database tables in one or more of the lookup value, where appropriate correction / recalculated Battery at least one state (e.g., S0C, D0D, remaining capacity, etc.), a battery 118 to update one or more parameters and the state of the battery 118 reaches or changing parameter update rate exceeds the threshold value 118. 然而,应理解,此程序184仅为本发明的特定实施例的一个实例,且用于达成类似结果的具有类似或不同步骤、功能、子例程等的其它可能程序也在本发明的范围内。 However, it should be understood that this particular program 184 is only one example embodiment of the present invention, and is used to achieve similar results within a range of other possible programs have similar or different steps, function, subroutine, etc. are also the present invention . 甚至可通过改变流程图内的操作中的一些操作的次序或放置而具有对实例性程序184的一些变化。 Even by changing the order or placement within an operational flowchart of some operations and have some changes to the instance of the program 184. 另外,在程序184中的任何适当点处,可将电池118的状态传递到主机装置110的其它组件,例如主机电路114。 In addition, any suitable point in the program 184, the state of the battery 118 may be transmitted to other components of the host device 110, such as the host circuit 114.

[0055] 在开始(在186处)之后,例如在放电循环的开始处,实例性程序184即刻获得(在188处)电池118的初始状态,例如S0C_0(如上文所描述而确定)或电池118的最近估计的S0C。 [0055] In the beginning (at 186) after, for example, at the beginning of the discharge cycle, an exemplary procedure 184 to obtain immediate (at 188) the initial state of the battery 118, e.g. S0C_0 (determined as described above) or the battery 118 The most recent estimate of S0C. 程序184还设定(在190处)初始参数更新速率(或更新时间间隔)及初始参数更新点。 Program 184 also sets (at 190) initial parameter update rate (or the update interval) and initial parameter update point. 如果放电循环以电池118的在阈值点上面/之前的状态开始,那么将把初始参数更新速率设定(在190处)为较低/较慢速率。 If the discharge cycle to begin at the threshold point above / before the state of the battery 118, then the initial parameters will update rate setting (at 190) to a lower / slower rate. 另一方面,如果放电循环以电池118的已在阈值点下面/之后的状态开始,那么将把初始参数更新速率设定(在190处)为较高/较快速率。 On the other hand, if the discharge cycle begins to have a state in the threshold point below / after the battery 118, then the initial parameters will update rate setting (at 190) to a higher / faster rate. 然而,在一些替代方案中,代替设定更新速率或时间间隔,将更新点存储于表或阵列中,且基于电池118的初始状态而将指针设定(在190处)为恰当更新点。 However, in some alternative, instead of setting the update rate or time interval, the update points are stored in a table or array, and based on the initial state of the battery 118 and the pointer is set (at 190) for the appropriate update point.

[0056] 通过ADC142读取(在192处)与电池118相关的所测量值(例如,端子电压、放电电流、温度等),如上文所描述。 [0056] By ADC142 read (at 192) and 118 of the associated measured value of the battery (e.g., terminal voltage, discharge current, temperature, etc.), as described above. 在194处修正电池118的状态。 In the 194 state amended the battery 118. 在一个实例中,根据先前所确定的充电状态及库仑计数来估计电池118的目前充电状态。 In one example, according to the state of charge and the coulomb count previously determined to estimate the current state of charge of the battery 118. 先前所确定的充电状态是在194处的第一修正中的S0C_0,但在194处的所有后续修正中,先前所确定的充电状态是其最近修正或重新计算的值。 State of charge is S0C_0 previously determined in 194 of the First Amendment, but in all subsequent amendments 194, the charge state is previously determined or recalculated its recent correction values. 库仑计数通常是基于从程序184的开始起或从充电状态的最近修正或重新计算的值起对放电电流的积分。 Coulomb counting is usually based on the state of charge of starting or from recent amendments or recalculation of the value from the beginning of the program 184 from the integration of the discharge current.

[0057] 在196处,确定是否应终止电池118的放电。 [0057] at 196, 118 to determine whether it should terminate battery discharge. 举例来说,在196处的确定可基于电池118的端子电压与EDV、达到/接近零的S0C(或所计算的剩余电池容量)或其它适当计算的比较。 For example, 196 may be determined based on the terminal voltage of the battery 118 and EDV, reach / close to zero S0C (or the remaining battery capacity calculated) or other more appropriate calculation. 如果在196处的确定为肯定的,那么起始(在198处)主机装置110的受控制停机且程序184结束(在200处)。 If the determination at 196 is affirmative, then the start (at 198) is controlled by the host device 110 down and 184 program end (at 200).

[0058] 如果在196处的确定为否定的,那么确定(在202处)是否已达到或超过参数更新点。 [0058] If the determination at 196 is negative, it is determined (at 202) whether it has reached or exceeded the parameter update point. 举例来说,如果参数更新点由S0C的预定值界定,那么在196处确定S0C的目前值(在处194修正)是否等于或小于所述预定值。 For example, if the parameter update point defined by a predetermined value S0C, it is determined S0C present value of 196 (194 in place correction) is equal to or less than the predetermined value. 如果在202处的确定为否定的,那么还未到更新参数的时间,因此程序184返回到192以如上文那样重复。 If the determination at 202 is negative, then the time has yet to update the parameters, the program returns to 192 to 184 as described above is repeated.

[0059] 如果在202处的确定为肯定的,那么在204处计算参数中的一者或一者以上(及优选地还有参数缩放因子)。 [0059] If the determination at 202 is affirmative, then the calculation of the parameters in 204 one or more (and preferably also the parameter scaling factor). 举例来说,如果待更新的参数是电池118的内部电阻(或阻抗),那么使用S0C的目前值在0CV对S0C表中查找0CV,且基于0CV、端子电压及放电电流而计算电阻。 For example, the parameters to be updated if the battery internal resistance (or impedance) 118, then use the current value S0C find 0CV for S0C table in 0CV, and based on 0CV, the terminal voltage and the discharge current and the resistance is calculated. 接着基于新的电阻以及从电阻对S0C及温度表获得的先前所估计电阻而计算电阻缩放因子。 Then based on new and previously estimated resistance from the resistance of the resistance thermometer obtained S0C and calculated resistance scaling factor.

[0060] 使用参数缩放因子(例如,电阻缩放因子),在206处更新关于参数的数据库(例如,电阻对S0C及温度表),优选地通过仅缩放电阻的对应于小于或等于目前S0C值的S0C值的那些值。 [0060] parameter scaling factor (e.g., resistive scaling factor), updates the parameter database 206 (e.g., resistance to S0C and thermometer), preferably by scaling only corresponds to less than or equal to the resistance value of the current S0C S0C value of those values. 优选地响应于参数及参数数据库的更新而重新计算(在208处)电池118的状态。 Preferably, in response to the update parameters and parameter database and recalculate (at 208) the state of the battery 118.

[0061] 在210处,确定是否已达到或超过增加参数更新速率的阈值点。 [0061] at 210, to determine whether the increase has reached or exceeded the threshold point parameter update rate. 如果否,那么在212处设定下一参数更新点。 If not, then set the next parameter update point at 212. 但如果在210处的确定为肯定的,那么在设定(在212处)下一参数更新点之前相应地改变(在214处)参数更新速率。 However, if the determination is affirmative 210, then set (at 212) a corresponding change (at 214) parameter update rate parameter update before the next point. 在新参数更新点的情况下,程序返回到192以如之前那样继续直到达到(在196处)放电终止点或用户关断主机装置110或目前放电循环以其它方式停止。 Under the new parameter update point, the program returns to 192 to continue as before until (at 196) the discharge termination point or a user turned off the host device 110 or the current discharge cycle otherwise stop.

[0062] 对于一些替代方案(例如其中更新点存储于表或阵列中的那些替代方案),不必如在210处做出此确定或如在214处实际上改变参数更新速率。 [0062] For some alternatives (for example, the point where the update is stored in a table or an array of those alternatives), do not have to make this determination, such as 214 or parameter update rate actually changed in 210. 而是,可仅仅将指针递增(例如,在212处)到表或阵列中的下一值,此提供下一更新点。 Instead, you can simply move the pointer increments (for example, 212) to the table or the next value in the array, this update provides the next point.

[0063] 所属领域的技术人员将了解,其它实施例及变化形式可在所主张发明的范围内;且即使为简洁或简单起见,特征或步骤是在具有此些特征或步骤中的全部或仅一些的实例性实施例的背景中加以描述的,本发明也既定涵盖具有所描述特征或步骤中的一者或一者以上的不同组合的实施例。 [0063] A skilled artisan will appreciate that other embodiments and variations may be within the scope of the implementation of the claimed invention; and even for brevity or simplicity, feature or step is having such features or steps all or only BACKGROUND some exemplary embodiments to be described, the present invention is also intended to cover embodiments having features or steps described in one of one or more different combinations of.

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Classifications
International ClassificationG01R31/36
Cooperative ClassificationG01R31/3651, G01R31/362, G01R31/3662
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