CN102332706A - Protection circuit and control method for power shortage of car storage battery - Google Patents
Protection circuit and control method for power shortage of car storage battery Download PDFInfo
- Publication number
- CN102332706A CN102332706A CN201110214407A CN201110214407A CN102332706A CN 102332706 A CN102332706 A CN 102332706A CN 201110214407 A CN201110214407 A CN 201110214407A CN 201110214407 A CN201110214407 A CN 201110214407A CN 102332706 A CN102332706 A CN 102332706A
- Authority
- CN
- China
- Prior art keywords
- controller
- storage battery
- relay
- voltage
- power shortage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000007405 data analysis Methods 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Abstract
The invention discloses a protection circuit of a power shortage of a car storage battery comprising a controller, a voltage sensor and a relay. The voltage sensor is connected with positive and negative electrodes of the car storage battery and a signal output end of the voltage sensor is connected with a signal input end of the controller; a work circuit part of the relay is arranged between the storage battery and a vehicle-mounted electrical appliance and a control circuit part of the relay is connected with the controller. The protection circuit provided by the invention has a lower reformation cost; a BCM (Body Control Module) of the car is utilized as the controller, additional control modules are not additionally arranged, and only one voltage sensor, one relay and corresponding wire bundles are additionally arranged, so that the protection circuit can be widely applied to a plurality of cars.
Description
Technical field
The present invention relates to the control system of automotive interior, in particular, relate to the circuit and the control method of automobile storage battery power shortage protection.
Background technology
Along with the progress of automotive engineering in recent years, the electric equipment on the automobile is more and more, and is therefore also increasing to the power consumption of storage battery; But storage battery is because the requirement of overall dimensions of a car and weight, can not endless increase, therefore; Under the situation that engine is not activated,, cause battery tension low possibly if driver or passenger frequently and for a long time use various electric equipments onboard; Electric weight is not enough; Thereby in the time of possibly causing light a fire next time, engine can't start, and brings very big trouble to the user; The user does not use under the situation of automobile, and electrical equipment itself has the quiescent current also can power consumption, and is long like the time (as two months), also might cause battery tension low excessively, thereby automobile can't start the situation of work.
Summary of the invention
Technical problem to be solved by this invention is to realize a kind of testing circuit of automobile storage battery, prevents to take place because of the situation that power shortage can not start owing to excessive electricity consumption causes engine.
To achieve these goals; The technical scheme that the present invention adopts is: a kind of automobile storage battery power shortage protective circuit comprises controller, voltage sensor and relay; Described voltage sensor connects the automobile storage battery positive and negative electrode; Its signal output part is connected with said controller signals input, and described relay operating circuit partly is arranged between storage battery and the vehicle mounted electrical apparatus, and its control circuit part is connected with said controller.
Described controller is the BCM module.
Described vehicle mounted electrical apparatus is the electric equipment of non-control car load security performance.
Described relay operating circuit part contact is a normally-closed contact.
This protective circuit also is provided with alarming device, and described alarming device is connected with controller.
A kind of control method of automobile storage battery power shortage protective circuit may further comprise the steps:
A, system start-up, voltage sensor is gathered the battery tension signal;
B, voltage sensor to controller, and carry out data analysis by controller with signal conveys;
C, controller compare voltage signal and predeterminated voltage warning value, partly are in the close access state if gather magnitude of voltage less than warning value and relay operating circuit, then output control signals to relay and are opened circuit in its operating circuit part contact; Controller compares voltage signal and predeterminated voltage safety value, partly is in off state if gather magnitude of voltage greater than safety value and relay operating circuit, then outputs control signals to relay and makes its operating circuit part closing of contact.
The output of described step c middle controller is opened circuit or is outputed signal to alarming device closure signal the time, is warned by alarming device.
The invention has the advantages that the improvement cost of this protective circuit is lower, the BCM that adopts automobile to carry makes controller; Need not to add other control module, only need to increase a voltage sensor, a relay and corresponding wire harness; Can on a lot of automobiles, be widely used; This protective circuit and control method detect automobile storage battery constantly, make accumulator electric-quantity can remain on a reasonable range, are unlikely to produce the problem of the excessive shortening life of storage battery that causes of battery discharging amount; And greatly reduce the probability that causes engine start not get up because of discharged or defective battery; And can reduce car load for a long time need not, stay in the somewhere, the self-burning of vehicle probability that causes by the electrical appliance short circuit.
Description of drawings
Face the content of every width of cloth accompanying drawing expression in the specification of the present invention and the mark among the figure down and make brief description:
Fig. 1 is a power shortage protective circuit theory diagram;
Mark among the above-mentioned figure is: 1, storage battery; 2, controller; 3, vehicle mounted electrical apparatus; 4, voltage sensor; 5, relay.
Embodiment
Can know referring to Fig. 1; Controller 2, voltage sensor 4 and relay 5 these several parts of mainly comprising of the present invention; Its middle controller 2 is a control unit, is used for the data-signal that analytical voltage transducer 4 is gathered, and gives relay 5 according to analysis result output control signal.Controller 2 can be the single-chip microcomputer of an independent special use that is provided with in car, and the BCM (car body controller) that also can adopt automobile to carry makes controller, need not other control module.Connect a voltage sensor 4 at storage battery 1 positive and negative polarities; Continue to detect and gather storage battery 1 voltage, the signal output part of voltage sensor 4 is connected with controller 2 signal input parts, and voltage sensor 4 detected magnitudes of voltage are inputed to controller 2; Controller 2 is changed laggard line data analysis at A/D; Relay 5 adopts the relay of normally-closed contact, and the operating circuit of relay 5 partly is arranged between storage battery 1 and the vehicle mounted electrical apparatus 3, by the break-make situation of relay 5 control car load electric components; The control circuit of relay 5 part is connected with the signal output part of controller 2, according to the closed or disconnection of analytic signal control relay 5 contacts of controller.
Because the inner ignition distributor of car is the parts that are used to ensure car load safety; In order not damage vehicle safety, only comprise the electric equipment of non-control car load security performance, for example skylight, air-conditioning, sound equipment etc. for the vehicle mounted electrical apparatus 3 of relay 5 controls; Can set according to concrete automobile type configuration; An alarming device that is connected with controller 2 is set in addition in that car steering is indoor, it comprises sound device and display device, can point out the voltage status of driver's storage battery 1 like this; When 2 pairs of relays 5 of controller are controlled, also can driver.
The control method of power shortage protection is:
A, system start-up, voltage sensor 4 is gathered storage battery 1 voltage signal;
B, voltage sensor 4 be signal conveys to controller 2, and carry out data analysis by controller 2;
C, controller 2 compare voltage signal and predeterminated voltage warning value, partly are in the close access state if gather magnitude of voltage less than warning value and relay 5 operating circuits, then output control signals to relay 5 and are opened circuit in its operating circuit part contact; Controller 2 compares voltage signal and predeterminated voltage safety value, partly is in off state if gather magnitude of voltage greater than safety value and relay 5 operating circuits, then outputs control signals to relay 5 and makes its operating circuit part closing of contact.
Step c middle controller 2 output open circuit or closure signal in output signal to alarming device, by caution the driver is carried out the device caution.Ought record this brownout like this; When to such an extent as to there is risk in engine start; Switch the power supply supply of the parts that do not relate to car load startup and safety in the car load by force,, prevent that engine from need start not because of power shortage so that preserve the electric weight of storage battery 1; After automatic accumulators 1 behind the engine start charges a period of time; Thinking that the electric weight of storage battery 1 does not exist starts when having risk car load, controller 2 restart to before cut off the power supply supply of electric device so that the user can reuse such electric device.Predeterminated voltage warning value and predeterminated voltage safety value are set according to the operating state of concrete vehicle, and for general vehicle, the predeterminated voltage warning value can be 11.5V, and the predeterminated voltage safety value can be 12V.
Claims (7)
1. automobile storage battery power shortage protective circuit; It is characterized in that: this protective circuit comprises controller (2), voltage sensor (4) and relay (5); Described voltage sensor (4) connects automobile storage battery (1) positive and negative electrode; Its signal output part is connected with said controller (2) signal input part, and described relay (5) operating circuit partly is arranged between storage battery (1) and the vehicle mounted electrical apparatus (3), and its control circuit part is connected with said controller (2).
2. automobile storage battery power shortage protective circuit according to claim 1 is characterized in that: described controller (2) is the BCM module.
3. automobile storage battery power shortage protective circuit according to claim 1 is characterized in that: described vehicle mounted electrical apparatus (3) is the electric equipment of non-control car load security performance.
4. automobile storage battery power shortage protective circuit according to claim 1 is characterized in that: described relay (5) operating circuit part contact is a normally-closed contact.
5. automobile storage battery power shortage protective circuit according to claim 1, it is characterized in that: this protective circuit also is provided with alarming device, and described alarming device is connected with controller (2).
6. control method like the described automobile storage battery power shortage of claim 1-4 protective circuit is characterized in that: may further comprise the steps:
A, system start-up, voltage sensor (4) is gathered storage battery (1) voltage signal;
B, voltage sensor (4) be signal conveys to controller (2), and carry out data analysis by controller (2);
C, controller (2) compare voltage signal and predeterminated voltage warning value; Partly be in the close access state if gather magnitude of voltage less than warning value and relay (5) operating circuit, then output control signals to relay (5) and opened circuit in its operating circuit part contact; Controller (2) compares voltage signal and predeterminated voltage safety value, partly is in off state if gather magnitude of voltage greater than safety value and relay (5) operating circuit, then outputs control signals to relay (5) and makes its operating circuit part closing of contact.
7. the control method of automobile storage battery power shortage protective circuit according to claim 6 is characterized in that: described step c middle controller (2) output is opened circuit or is outputed signal to alarming device closure signal the time, is warned by alarming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110214407A CN102332706A (en) | 2011-07-29 | 2011-07-29 | Protection circuit and control method for power shortage of car storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110214407A CN102332706A (en) | 2011-07-29 | 2011-07-29 | Protection circuit and control method for power shortage of car storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102332706A true CN102332706A (en) | 2012-01-25 |
Family
ID=45484367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110214407A Pending CN102332706A (en) | 2011-07-29 | 2011-07-29 | Protection circuit and control method for power shortage of car storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102332706A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590746A (en) * | 2012-02-15 | 2012-07-18 | 河源职业技术学院 | System and method for detecting and displaying status and fault of automobile charging system |
| CN104064005A (en) * | 2013-03-20 | 2014-09-24 | 福特全球技术公司 | Radio mute system and method for non-controller regional network radio equipment |
| CN104827991A (en) * | 2014-10-27 | 2015-08-12 | 北汽福田汽车股份有限公司 | Control method and system of vehicle |
| CN104842807A (en) * | 2014-08-22 | 2015-08-19 | 北汽福田汽车股份有限公司 | Power-lack protection method and system of power accumulator high-voltage relay |
| CN105599712A (en) * | 2016-03-17 | 2016-05-25 | 北京汽车研究总院有限公司 | Automobile storage battery protection system and automobile |
| CN109249887A (en) * | 2018-09-20 | 2019-01-22 | 北海华源电子有限公司 | Vehicle monitor terminal |
| CN113183898A (en) * | 2021-05-06 | 2021-07-30 | 重庆长安汽车股份有限公司 | Device and method for preventing power shortage caused by excessive dark current and vehicle |
| CN114079313A (en) * | 2021-11-17 | 2022-02-22 | 广州市诺的电子有限公司 | Remote power-off protection device and method for automobile battery |
| CN114563999A (en) * | 2022-02-28 | 2022-05-31 | 奇瑞汽车股份有限公司 | Method and device for determining fault controller, vehicle-mounted terminal and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037749A (en) * | 1995-06-21 | 2000-03-14 | Batteryguard Limited | Battery monitor |
| US20090147427A1 (en) * | 2007-09-24 | 2009-06-11 | Yeshaiahou Aharon Levinas | Battery disconnect device |
| CN101863254A (en) * | 2010-06-30 | 2010-10-20 | 奇瑞汽车股份有限公司 | System and method for managing automobile power |
| CN201842041U (en) * | 2010-10-21 | 2011-05-25 | 浙江吉利汽车研究院有限公司 | Energy-saving control circuit for automobile light sources |
-
2011
- 2011-07-29 CN CN201110214407A patent/CN102332706A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6037749A (en) * | 1995-06-21 | 2000-03-14 | Batteryguard Limited | Battery monitor |
| US20090147427A1 (en) * | 2007-09-24 | 2009-06-11 | Yeshaiahou Aharon Levinas | Battery disconnect device |
| CN101863254A (en) * | 2010-06-30 | 2010-10-20 | 奇瑞汽车股份有限公司 | System and method for managing automobile power |
| CN201842041U (en) * | 2010-10-21 | 2011-05-25 | 浙江吉利汽车研究院有限公司 | Energy-saving control circuit for automobile light sources |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590746A (en) * | 2012-02-15 | 2012-07-18 | 河源职业技术学院 | System and method for detecting and displaying status and fault of automobile charging system |
| CN104064005A (en) * | 2013-03-20 | 2014-09-24 | 福特全球技术公司 | Radio mute system and method for non-controller regional network radio equipment |
| CN104842807A (en) * | 2014-08-22 | 2015-08-19 | 北汽福田汽车股份有限公司 | Power-lack protection method and system of power accumulator high-voltage relay |
| CN104827991A (en) * | 2014-10-27 | 2015-08-12 | 北汽福田汽车股份有限公司 | Control method and system of vehicle |
| CN104827991B (en) * | 2014-10-27 | 2017-02-01 | 北汽福田汽车股份有限公司 | Control method and system of vehicle |
| CN105599712A (en) * | 2016-03-17 | 2016-05-25 | 北京汽车研究总院有限公司 | Automobile storage battery protection system and automobile |
| CN109249887A (en) * | 2018-09-20 | 2019-01-22 | 北海华源电子有限公司 | Vehicle monitor terminal |
| CN113183898A (en) * | 2021-05-06 | 2021-07-30 | 重庆长安汽车股份有限公司 | Device and method for preventing power shortage caused by excessive dark current and vehicle |
| CN114079313A (en) * | 2021-11-17 | 2022-02-22 | 广州市诺的电子有限公司 | Remote power-off protection device and method for automobile battery |
| CN114563999A (en) * | 2022-02-28 | 2022-05-31 | 奇瑞汽车股份有限公司 | Method and device for determining fault controller, vehicle-mounted terminal and system |
| CN114563999B (en) * | 2022-02-28 | 2024-02-02 | 奇瑞汽车股份有限公司 | Determination method and device of fault controller, vehicle-mounted terminal and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102332706A (en) | Protection circuit and control method for power shortage of car storage battery | |
| EP2607178B1 (en) | Power supply for powering an electric load of a vehicle | |
| DE102012219257B4 (en) | IN-VEHICLE EMERGENCY ALERT | |
| US7852042B2 (en) | Method of monitoring and/or controlling or automatically controlling the voltage of at least one group of cells in a compound of cells of an energy storage device | |
| US20130187616A1 (en) | Battery Discharge System and Method of Operation thereof | |
| CN102481851A (en) | A vehicle battery safety system | |
| CN101888114B (en) | Multifunctional power supply of vehicular automotive electronic device | |
| CN111605437B (en) | Battery management system and battery management method | |
| CN108357444A (en) | Vehicle electronic device reserve battery state of emergency control switching circuit | |
| CN111137132A (en) | Electric automobile collision power-off control method and system and electric automobile | |
| CN201800559U (en) | Electric vehicle power source safety protection device | |
| CN103738189A (en) | Safety electric vehicle and control method thereof | |
| US20170310150A1 (en) | Electric energy management system, management device for enrgy storage device, energy storage apparatus and electric energy management method for vehicle | |
| US20150188347A1 (en) | Battery Management Device and Power Supplying System Including the Same | |
| CN211606187U (en) | Vehicle-mounted electronic equipment power-down protection circuit and automobile | |
| CN103786583A (en) | Battery management system (BMS) controlling high voltage output according to collision signals | |
| CN103066583A (en) | Device and method of fast discharging of high-voltage direct-current bus | |
| CN205195349U (en) | On -vehicle power supply integrated control device | |
| CN105633491B (en) | A kind of passive equalizing circuit of battery management system | |
| CN111180808A (en) | Battery pack system for use on the onboard power supply system of a motor vehicle | |
| CN103580245A (en) | Battery management system, motor vehicle and battery system | |
| CN103647325B (en) | A kind of automobile voltage regulation system | |
| CN102852690A (en) | Control circuit for start protection of automobile starter and control method of control circuit | |
| EP2889174A1 (en) | Battery management device and power supplying system including the same, electrically isolating each battery unit upon fault | |
| CN204801692U (en) | Intelligence power supply control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120125 |