CN103000448A - Relay controller - Google Patents
Relay controller Download PDFInfo
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- CN103000448A CN103000448A CN2012103404830A CN201210340483A CN103000448A CN 103000448 A CN103000448 A CN 103000448A CN 2012103404830 A CN2012103404830 A CN 2012103404830A CN 201210340483 A CN201210340483 A CN 201210340483A CN 103000448 A CN103000448 A CN 103000448A
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- Prior art keywords
- relay
- operated controller
- current
- terminal
- change
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
Abstract
The invention relates to a relay controller used for controlling an excitation current of a relay, wherein, the relay controller is designed to control the excitation current passing through the excitation windings of the relay when the relay is electrified via a switch, so as to make an introduced current flow by the excitation windings, and after the introduced time has passed, a maintenance current smaller than the introduced current flows by the excitation windings, and wherein, the relay controller is designed to feed a converter current flowing by the excitation windings to the converter device via the first terminal and the second terminal of the relay controller when the relay is disconnected via the switch.
Description
Priority
The application is the part continuity in the U.S. Patent application 12/465,678 of submission on May 14th, 2009.U.S. Patent application 12/465,678 requires in the rights and interests of the German patent application 102008023626.8 of submission on May 15th, 2008.Therefore the full content of the application of formerly submitting to is combined in herein by reference.
Technical field
The present invention relates to a kind of relay-operated controller of the excitation winding for driving relay, and a kind of relay device for switchable load.
Background technology
When using relay, the high-pressure side or the low-side switch that the excitation winding of relay are connected to operating voltage have been used.In this case, term high-pressure side or low-pressure side have identified the position with respect to on-load switch, and described load is the excitation winding of relay in this case.High side switch is received battery by a connecting terminals, and low-side switch is received reference potential by a connecting terminals, is generally ground.Illustrate the relay with high side switch among Fig. 1.For example in automobile is used, limited by the coil resistance that encourages winding by the electric current that encourages winding.The shortcoming of such layout is the high current drain after connecting, the high inductance that encourages the expensive of winding and encourage winding.Have high impedance owing to have many windings of fine rule, caused the high inductance of excitation winding, the high inductance of excitation winding makes the change of current of relay more be difficult to reach, and consequence is the On The Drug Release of the relay operating contact of relay.The On The Drug Release of the primary side of relay can make spark appear at the relay operating contact of relay.This spark reduces the service life of relay widely.
The relay drive system of saving electric current reduces electric current soon after namely connecting after the introducing (pull-in) of relay armature (relay armature), therefore in order to reduce the power consumption of engage relay.The such circuit arrangement that is used for the operation of relay is disclosed in DE4410819.In DE4410819, switch T1 bridge joint keeps resistor R4, keeps resistor R4 that the maintenance electric current of the excitation winding of relay is set.As the result of the bridge joint of resistor R4, first constantly can obtain higher introducing electric current what connect the excitation winding.
For change of current purpose, change of current voltage must be via applying with encouraging winding and current opposite in direction; Described change of current voltage is higher, the excitation winding energy be reduced sooner and the change of current faster.Diode across excitation winding Opposite direction connection can be used for change of current purpose, so that change of current electric current can flow through the diode of at that time conducting, as illustrated among Fig. 3.Diode has forward biased diode and only permits the shortcoming of low change of current voltage across the excitation winding, and the as a result change of current is carried out at leisure.As illustrated among Fig. 3, Zener diode also can be used for change of current purpose, and described Zener diode is connected to the excitation winding of relay so that change of current electric current can flow through the Zener diode that bears puncture.Zener diode has the shortcoming of very high power loss.In addition, except the energy in winding in the switch a high proportion of energy drawn and changed from battery.
As illustrated among Fig. 3, resistor also can be used for change of current purpose, so that change of current electric current can flow through the resistor that is connected in parallel with excitation coil.Resistor is permitted the high voltage on the excitation winding.Voltage on the excitation winding is selecteed higher, and exciting current descends sooner.Relay contact in the situation of the high change of current voltage at excitation coil place than in the situation of low change of current voltage, opening sooner.Relay contact open fast the erosion that has reduced relay contact.Resistor has the shortcoming that high voltage pulse occurs soon after disconnecting, this pulse only can be controlled with the high-voltage semi-conductor switch of costliness.Resistor has the further shortcoming of current flows through resistor when relay is switched on.
Particularly directly depend in the automobile of electric current demand of employed electronic equipment in gasoline consumption, reduce the current drain of electronic equipment and therefore reduce automobile the CO2 discharging, make solution cheap and that have a long service life and just becoming important.
Summary of the invention
One aspect of the present invention provides a kind of relay-operated controller and a kind of relay device, and the exciting current of its repeat circuit is controlled in the mode of saving electric current in simple mode.
The relay-operated controller that is used for the exciting current of control relay comprises: the first terminal, and it is connected to the excitation winding of described relay; The second terminal, it is connected to the change of current device of described relay; Wherein, when described relay is switched on, described relay-operated controller control is by the described exciting current of the described excitation winding of described relay, so that by described excitation winding the introducing current flowing is arranged at first, and after the introducing time has passed, by described excitation winding maintenance current flowing less than described introducing electric current is arranged, and wherein when described relay is disconnected, described relay-operated controller will flow through the change of current current feed of described excitation winding to described change of current device by described the first terminal and described the second terminal by described relay-operated controller.
Described relay-operated controller is preferably located in the afterflow path of described relay.Described relay-operated controller is controlled the time sequencing of the described introducing operation of described relay.If described high side switch or low-side switch disconnect described relay circuit, then described relay-operated controller is transmitted to described change of current device with described freewheel current or described change of current electric current.Voltage at the described terminal place of described relay-operated controller keeps being restricted to low value.On the contrary, the described switch-side terminal of described excitation winding can freely wave, and its voltage swing is preferably limited by the described puncture voltage of described switch.Can also use mechanical type or other cheap switch.
The electric current that described relay-operated controller can be designed to only flow in described the second terminal by described change of current device after the described connection of described switch makes described relay-operated controller energising control described exciting current afterwards.For this purpose, described change of current device must allow to realize by switching over flowing to the described electric current of described relay-operated controller.For this purpose, by way of example, described change of current device can be embodied in resistor.After described switch has been switched on, thereby electric current at first flows in the described relay-operated controller and the beginning latter via described change of current device by described the second terminal.At this moment, described relay-operated controller does not provide exciting current.In case described relay-operated controller is ready to operation, just can also provide described exciting current.
Described relay-operated controller can be designed to detect the described electric current that flows to described the second terminal after the described energising of the described relay by described switch by described change of current device, therefore in order to determine to connect constantly, wherein this connects the beginning of constantly determining the described introducing time.This state can for example be detected by the described inner electrify restoration circuit of supplying voltage of monitoring.Electrify restoration circuit monitoring inner supply voltage and described inner supply voltage generate signal once surpassing specific threshold.After described detection, can reseting capacitor or counting device.Then the beginning of described relay-operated controller determines the beginning of described introducing time.
Described relay-operated controller can be designed to detect described exciting current.If described exciting current surpasses threshold value, described capacitor or described counting device then can reset.The described beginning above then determining the described introducing time of described exciting current threshold value.
Described relay-operated controller can have Five-terminals, and wherein, switching on and off of described relay-operated controller can be determined by means of the circuit that is connected to described Five-terminals.The described exciting current of described relay can connect or disconnect with the signal via described Five-terminals, perhaps can determine by means of the circuit that is connected to described Five-terminals.Described relay-operated controller can connect or disconnect with the signal via described Five-terminals.
Described relay-operated controller can be designed to determine described maintenance electric current.Described introducing electric current can be reduced to lower maintenance electric current after the described introducing time has passed.Described maintenance electric current must be enough greatly to keep described relay to connect.It is useful reducing as much as possible described maintenance electric current for effective work of described relay.Described relay-operated controller can have the 6th terminal, wherein can or use via the signal of described the 6th terminal and determine by means of the circuit that is connected to described the 6th terminal by the described exciting current of described excitation winding, described maintenance electric current.
Described device can comprise temperature sensor circuit, and described temperature sensor circuit comprises the temperature sensor for detection of the temperature of described relay-operated controller.If can being designed to surpass maximum temperature, realizes described temperature sensor circuit the measure be used to the power consumption that reduces described relay-operated controller.A measure that is used for reducing the described power consumption of described relay-operated controller can be to disconnect the described electric current by described excitation winding.
In one embodiment, described relay-operated controller draws electric current from described the second terminal during operation.Therefore described relay-operated controller utilizes the described electric current that flows through described change of current device to be used for the supply of himself, and the result is the other terminal that does not need be used to supply voltage is provided.The described electric current that flows through described change of current device is limited by described relay-operated controller, because only for the needed described current flowing of the described relay-operated controller of supply.
Described relay-operated controller can have the 3rd terminal, and it is connected to described the second reference potential, for example.Described voltage between described the first terminal and described the 3rd terminal can limit by means of voltage limit device.Described relay-operated controller therefore can be after the described introducing that reduces described armature described electric current the time limit described voltage.For example, if the temperature that described relay-operated controller is increased jeopardizes, then described voltage limit device is protected described relay-operated controller to exempt from and is subjected to high pressure.
Described the 3rd terminal can be preferably connected to described reference potential.Inner supply voltage can be based upon between described the second terminal and described the 3rd terminal.Between described the first terminal and described the 3rd terminal, described relay-operated controller can comprise be used to the second switch that exciting current is provided and current source.
Between described the first terminal and described the second terminal, described relay-operated controller can have be used to the first switch of controlling described change of current electric current.
Described first switch of described relay-operated controller can be diode.In one embodiment, the negative electrode of the described diode of described the first switch is connected to described second terminal of described relay-operated controller.Described first switch of described relay-operated controller can be MOS transistor or bipolar transistor.
Described relay-operated controller can have the under-voltage transducer between described the second terminal and described the 3rd terminal, with for detection of under-voltage.
If it is under-voltage that described under-voltage transducer detects, then described relay-operated controller can reset to predetermined value with the described introducing time.Therefore described relay-operated controller can transform to higher electric current indirectly, perhaps arrive the electric current of maximum possible, even so that when between described the first reference potential and described the second reference potential, having low-voltage described relay operating contact also remain closed.
Described relay-operated controller can comprise and the described current source that exciting current the is provided second switch that provides in parallel, if described under-voltage transducer detects the described current source of under-voltage then described second switch bridge joint.Even described relay-operated controller therefore provide maximum possible electric current so that in the situation of low-voltage described relay operating contact also remain closed.
In further exemplary embodiment, described current source only provides described maintenance electric current, and for the described introducing of described relay, at the described current source of the described second switch bridge joint of described introducing time durations.
Described relay-operated controller can have the 4th terminal, and the wherein said introducing time can be determined by means of the circuit that is connected to described the 4th terminal.
A kind of relay device for switchable load comprises: relay; Relay-operated controller, it comprises be used to two terminals controlling described relay at least; Change of current device, wherein said change of current device is via the described excitation winding parallel coupling of the first terminal and the second terminal and the described relay of described relay-operated controller; Switch, the described excitation winding of wherein said relay, described relay-operated controller and described switch are by series coupled.
In the relay device that is used for switchable load, described relay-operated controller can be integrated in the housing with described relay.Integrated in the described relay of described relay-operated controller has for example can greatly oversimplify to be processed and stock's (stockkeeping) advantage.In integrated situation, described relay-operated controller can accurately be coordinated with described relay, and the result can realize the simplification of described relay-operated controller.
In the relay device that is used for switchable load, described switch can be high side switch.
In the relay device that is used for switchable load, described switch can be low-side switch.
In the relay device that is used for switchable load, described change of current device can comprise at least one resistor.
In the relay device that is used for switchable load, described change of current device can comprise at least one Zener diode.
Description of drawings
Hereinafter with reference to figure below embodiment being explained in more detail.
Fig. 1 shows the relay with high side switch.
Fig. 2 shows the relay with low-side switch and fly-wheel diode.
Fig. 3 shows the relay with low-side switch and Zener diode.
Fig. 4 shows the relay with low-side switch and resistor.
Fig. 5 show have high side switch, the relay of converter circuit and relay-operated controller.
Fig. 6 show have low-side switch, the relay of converter circuit and relay-operated controller.
Fig. 7 shows relay-operated controller.
Fig. 8 shows the signature tune line chart.
Fig. 9 shows the relay with converter circuit and relay-operated controller.
Figure 10 shows the relay with converter circuit and relay-operated controller.
Embodiment
Fig. 1 shows relay 300 and high side switch 210, and they are connected in series between reference potential 110 and 120 in known manner.Voltage between the reference potential 110 and 120, supply voltage Vs can be the cell voltage in the automobile for example.High side switch 210 or low-side switch will be supplied on the excitation winding 310 that voltage switches to relay 300.Electric current by excitation winding 310 is limited by the coil resistance that encourages winding 310.
Fig. 2 to 4 shows the different known embodiment of change of current device.Shown change of current device 410,420,430 also can be used as high side switch.In Fig. 2, change of current device 400 is embodied in diode 410.If low-side switch is embodied as nmos pass transistor 221 here, be switched on, then exciting current flows through excitation winding 310.The energy of storing in the excitation winding is dissipated because the inductance attribute of excitation coil, exciting current continue to flow.After having disconnected nmos pass transistor 221, exciting current flows through change of current device 400 or afterflow path (the freewheeling path) that the energy that is configured such that to encourage winding is dissipated.Disconnect and nmos pass transistor 221 after, exciting current flows through the diode of positive conducting.The electromotive force of the second terminal of excitation winding is approximately 0.7 to 1.3 volt on the first reference potential 110.Because low diode voltage is across the excitation winding, thus the energy of excitation winding only dissipate at leisure, as a result change of current operation for a long time and the opening for a long time of relay operating contact, thereby can produce many erosions at relay operating contact place.Can realize opening faster of relay contact by means of the change of current device of permitting high voltage on the excitation winding.The embodiment of such change of current device has been shown among Fig. 3 and Fig. 4.Zener diode 420 from Fig. 3 is permitted higher voltage on the excitation winding 310, so that encourage the energy of winding 310 to be dissipated rapidly, and because this result, the relay operating contact is opened rapidly.The further advantage of Zener diode 420 is that it can be easily integrated in the nmos pass transistor.During the change of current, still can draw electric current from supply voltage Vs, this electric current causes extra loss.
Having as the resistor 430 of change of current device 400 according to Fig. 4 does not have change of current electric current to be drawn from supply voltage Vs during the change of current and it is allowed for encouraging the high-tension advantage of the change of current of winding 310.Yet, must not damage nmos pass transistor owing to be used for the voltage of the change of current, so the size measures cost of resistor 430 is high.Because the price of nmos pass transistor is owing to the high voltage withstanding ability of transistor increases, so the size measures of economic aspect limit transistor 430.The extra current that flows via resistor when relay is switched on similarly is disadvantageous.
Fig. 5 show comprise relay 300, change of current device 400, as the layout of nmos pass transistor 211 and the relay-operated controller 500 of high side switch.The first terminal of nmos pass transistor 211 is connected to the first reference potential 110, and the second terminal of nmos pass transistor 211 be connected to relay 300 excitation winding 310 the first terminal 311 and be connected to the first terminal of change of current device 400.The second terminal 312 of excitation winding 310 is connected to the first terminal 501 of relay-operated controller 500.The second terminal of change of current device 400 is connected to the second terminal 502 of relay-operated controller 500.The 3rd terminal 503 of relay-operated controller 500 is connected to the second reference potential 120.If this layout is used in the automobile, then the first reference potential 110 can be provided by battery, and the second reference potential 120 can be provided by the earth terminal of automobile.Nmos pass transistor 211 only is an exemplary embodiment of high side switch 210; High side switch 210 can also be embodied in PMOS transistor, PNP or NPN transistor or be embodied as the relay operating contact of relay.High side switch 210 can also be connected to a plurality of layouts that comprise relay 300 and relay-operated controller 500.
The layout that comprises low-side switch is similar to this to be possible and to be illustrated among Fig. 6.In such layout, the 3rd terminal 503 of relay-operated controller 500 is connected to the first reference potential 110, therefore causes from the layout of high-pressure side layout about the mirror image formation of trunnion axis.Have high side switch 210 arranged, the description of the function of the relay 300 of 211 relay-operated controller 500 also is applicable to comprise the layout of low-side switch similarly.
If high side switch 211 is disconnected, then whole layout does not have electric current and relay to be disconnected.In other words, the switch 320 of relay 300 is opened, and the result does not have electric current can flow through the terminal 321,322 of relay 300.In Fig. 8, this state is corresponding with the state before due in t1.
Fig. 8 a shows the switching voltage Vsw between the 3rd terminal 503 of the excitation terminal of winding 311 and relay-operated controller.
Fig. 8 b shows the output voltage V ro between the 3rd terminal 503 of the first terminal 501 of relay-operated controller 500 and relay-operated controller.
Fig. 8 c show by the excitation winding 310 flow to the excitation winding terminal 311 in exciting current Irel.
Fig. 8 d shows the supply electric current I rs of the relay-operated controller in the second terminal 502 that flows to relay-operated controller 500.
Fig. 9 shows the layout that comprises relay 300, change of current device 400 and relay-operated controller 500.The first terminal 311 of the excitation winding 310 of relay 300 is connected to reference voltage 110.The second terminal 312 of excitation winding 310 is connected to the first terminal 501 of relay-operated controller 500.The second terminal of change of current device 400 is connected to the second terminal 502 of relay-operated controller 500.The 3rd terminal 503 of relay-operated controller 500 is connected to the second reference potential 120.If this configuration is used in the automobile, then the first reference potential 110 can be provided by battery, and the second reference potential 120 can be provided by the earth terminal of automobile.Fig. 9 shows the Five-terminals 505 that is switched on or switched off relay-operated controller.Fig. 8 shows the 6th terminal of the maintenance electric current of determining relay-operated controller.
Figure 10 shows the layout (described the second reference potential 120 can be provided by earth terminal) that comprises the excitation winding that is connected to the second reference potential 120, and it is possible being similar to the embodiment shown in Fig. 9.Therefore in such layout, the 3rd terminal 503 of relay-operated controller 500 is connected to the first reference potential 110, causes the layout that forms about the mirror image of trunnion axis from the layout of Fig. 9.The description of the function of this embodiment is similarly and also to be applicable to the layout shown in Fig. 9.
Moment t1 to t5 among Fig. 8 has described the moment that the state arranged changes, and high side switch 210,211 is disconnected until t1.If high side switch 210,211 is in moment t1 closure, then switching voltage Vsw almost rises to supply voltage Vs.Supply voltage Vs is the voltage between the first reference potential 110 and the second reference potential 120.Suppose that high side switch 210,211 internal resistance are low, then can ignore and cross over high side switch 210,211 voltage drop.Then supplying electric current I rs flows in the relay-operated controller 500 via change of current device 400.By means of supplying induced current, relay-operated controller 500 begins, and provides exciting current Irel by means of switch or current source at the first terminal 501 places of relay-operated controller 500.
After relay-operated controller 500 has begun, can determine and define the zero hour of introducing time.Exciting current Irel constantly rises, and the relay operating contact 320 of relay 300 reaches closed before the amplitude of predetermined introducing electric current of relay 300 at exciting current Irel.Output voltage V ro remains on the low level corresponding with the minimum pickup pole tension of the minimum drain voltage of MOS transistor or bipolar transistor for a long time.
Except the current source that can be embodied in current source transistor, the second switch that can be embodied in switching transistor also is possible, so that further minimize output voltage.Can detect exciting current, threshold value surpasses the zero hour can determine the time of introducing in this case.If reached predetermined introducing electric current, if introduced then that electric current is provided by switch exciting current Irel would further rise until its by resistance and restriction.Provided by current source if introduce electric current, then exciting current Irel does not further rise.
Output voltage V ro adjusts to the value that is provided by the internal resistance of supplying voltage Vs, introducing electric current and excitation winding 310.Irrelevant with this, the current potential at the second terminal 502 places of relay-operated controller 500 presents the value that internal resistance, supply voltage Vs and supply electric current I rs by change of current device 400 provide.
At moment t2, after the introducing time had passed, relay-operated controller 500 switched to the predetermined value that keeps electric current with exciting current from the value of introducing electric current.Can keep electric current to be chosen as so that it is lower than the introducing electric current, but enough height so that the relay operating contact 320 of relay 300 remain closed.
T2 can be determined by the predetermined introducing time constantly.T2 can also be determined by the relay-operated controller 500 that the detection exciting current has reached the moment of the value of introducing electric current and allowed the predetermined introducing time to pass after this moment constantly.
Because the capacity volume variance that the difference of the difference of introducing electric current and the maintenance electric current of exciting current produces is by just being transmitted to the excessive exciting current of change of current device 400 via 400 dissipation of change of current device by the first terminal 501 to second terminals 502 by relay-operated controller 500.Then the electric current that is produced by the difference of the difference of supply electric current I rs and excessive exciting current begins to flow from the second terminal 502 of relay-operated controller 500.When exciting current reduced, the voltage that is higher than supply voltage Vs was set up at the first terminal 501 and second terminal 502 of relay-operated controller 500 by change of current device.This voltage can be limited by voltage limiting circuit, and this voltage limiting circuit can be in inside or the outside of relay-operated controller 500, and can be for example Zener diode.
In case because the capacity volume variance that the difference of the maintenance electric current of the difference of introducing electric current and exciting current produces dissipates, then reached constantly t3.Output voltage V ro adjusts to the given value of internal resistance by supply voltage Vs, maintenance electric current and excitation winding 310,
The amplitude that depends on supply voltage Vs the situation that relay-operated controller 500 can not provide enough exciting current can occur at this state or state formerly.Whether under-voltage sensor circuit 570 detects the supply voltages too low so that enough exciting currents can not be provided, and initiate the measure for increasing exciting current.A measure is to come the bridge current source by means of the switch with low pressure drop.
The amplitude that depends on supply voltage Vs the power consumption of relay-operated controller 500 can occur above the situation of the power consumption that allows at this state or state formerly.The power consumption that increases can occur in the current source of exciting current is provided.Relay-operated controller 500 can have temperature sensor circuit 560, initiates the measure be used to the power consumption that reduces relay-operated controller 500 if it is used for reaching maximum temperature.A measure is to reduce exciting current.If this measure is unsuccessful, then can fully disconnect exciting current.
Relay disconnects by disconnecting high side switch 210,211.In Fig. 8, high side switch is disconnected at moment t4.Owing to do not have exciting current can flow through high side switch 210,211, so exciting current flows through change of current device 400.As the result of the voltage drop that so causes across change of current device 400, switching voltage Vsw becomes negative.Negative switching voltage Vsw can be limited by high side switch 210,211 Zener diode.In the situation of mechanical switch, it is unrestricted that voltage can keep.Then voltage reach the value by the product generation of converting resistance and change of current electric current.In case the energy of excitation coil 310 is dissipated, then due in t5 is because device has been de-energized.
Fig. 7 shows the exemplary embodiment of relay-operated controller 500.Current controller 510 is connected to the first terminal 501 and the 3rd terminal 503 of relay-operated controller 500.Voltage limiting circuit 530 is connected to the first terminal 501 and the 3rd terminal 503 of relay-operated controller 500.Afterflow controller 520 is connected to the first terminal 501 and second terminal 502 of relay-operated controller 500.Be used for generating the second terminal 502 and the 3rd terminal 503 that circuit 550, temperature sensor circuit 560 and the under-voltage sensor circuit 570 of supplying voltage are connected to relay-operated controller.Time controller 540 is designed to control current controller 510.The 4th terminal 504 of relay-operated controller 500 can form, and can be provided for the device of influence time controller 540 at this place.A device that is used for influence time controller 540 is the capacitor that is connected to the 4th terminal 504 of relay-operated controller 500.An exemplary embodiment of current controller 510 comprises nmos pass transistor or NPN transistor, and its drain electrode or collector electrode are connected to the first terminal 501 of relay-operated controller 500 and are controlled to so that it provides constant current.Current controller 510 can also comprise nmos pass transistor or NPN transistor, and its drain electrode or collector electrode are connected to the first terminal 501 of relay-operated controller 500 and are switched so that output voltage V ro becomes low as much as possible.An exemplary embodiment of voltage limiting circuit 530 comprises Zener diode, and its negative electrode is connected to the first terminal 501 of relay-operated controller.The limiting voltage effect of Zener diode can be amplified by circuit.An exemplary embodiment of afterflow controller 520 can comprise diode, and its negative electrode is connected to the second terminal 502 of relay circuit.Replace diode, freewheeling circuit 520 can comprise transistor.
Claims (21)
1. relay-operated controller that is used for the exciting current of control relay comprises:
The first terminal, for the excitation winding that is connected to described relay,
The second terminal, for the change of current device that is connected to described relay,
Wherein, described relay-operated controller is designed to control the described exciting current by the described excitation winding of described relay, so that by described excitation winding the introducing current flowing is arranged at first, and after the introducing time has passed, maintenance current flowing less than described introducing electric current is arranged
And wherein, described relay-operated controller is designed to feed current to described change of current device by the change of current that described the first terminal and described the second terminal by described relay-operated controller will flow through described excitation winding.
2. relay-operated controller according to claim 1, wherein said relay comprises Five-terminals, wherein the described exciting current of the excitation winding by described relay is controlled by described relay-operated controller, and switching on and off by means of the circuit that is connected to described Five-terminals of wherein said exciting current determined.
3. relay-operated controller according to claim 1, wherein, described relay-operated controller is designed to detect after described relay has been switched on by described relay and described change of current device and flows to described electric current in described the second terminal, thereby determines thus to connect constantly and begin the described passage of described introducing time.
4. relay-operated controller according to claim 1, wherein, described relay-operated controller is designed to detect described exciting current and begins the described passage of described introducing time when surpassing threshold value.
5. relay-operated controller according to claim 1, wherein, described relay-operated controller is designed to only control described exciting current after the described electric current that flows to described the second terminal by described change of current device makes described relay-operated controller energising.
6. relay-operated controller according to claim 1 comprises temperature sensor circuit, and described temperature sensor circuit comprises the temperature sensor for detection of the described temperature of described relay-operated controller.
7. relay-operated controller according to claim 6 wherein, is implemented the measure be used to the described power consumption that reduces described relay-operated controller if described temperature sensor circuit is designed to surpass maximum temperature.
8. relay-operated controller according to claim 1 wherein, is drawn from described the second terminal for the described operating current of described relay-operated controller.
9. wherein, there is the first switch in relay-operated controller according to claim 1 between the described the first terminal of described relay-operated controller and described the second terminal.
10. relay-operated controller according to claim 8, wherein, described the first switch is diode.
11. relay-operated controller according to claim 1 comprises the 3rd terminal and comprises the voltage limiting circuit that limits the described voltage between described the first terminal and described the 3rd terminal.
12. relay-operated controller according to claim 1 comprises for detection of described second terminal of described relay-operated controller and the under-voltage under-voltage sensor circuit between described the 3rd terminal.
13. relay-operated controller according to claim 12, wherein, described under-voltage sensor circuit is reset to predetermined value with the described introducing time, if so that voltage undershoot then described introducing current flowing.
14. relay-operated controller according to claim 1 comprises current source and second switch, wherein, described current source is designed to provide described maintenance electric current and described second switch to be designed to provide described introducing electric current.
15. relay-operated controller according to claim 13, comprise the current source that is designed to provide described introducing electric current and described maintenance electric current, and comprise the second switch in parallel with described current source, if described under-voltage sensor circuit detects the described current source of under-voltage then described second switch bridge joint.
16. relay-operated controller according to claim 1 comprises the 4th terminal, comprises the circuit that is connected to described the 4th terminal and the described introducing time is provided to the device that is connected to described the 4th terminal.
17. a relay device that is used for switchable load comprises:
Relay,
Be used for controlling the relay-operated controller of described relay, it comprises at least two terminals,
Change of current device, wherein, described change of current device is coupled via the described the first terminal of described relay-operated controller and the described excitation winding parallel of described the second terminal and described relay,
Wherein, described excitation winding, described relay-operated controller and the described switch of described relay are by series coupled.
18. the relay device for switchable load according to claim 17, wherein, described relay-operated controller comprises Five-terminals, and switching on and off of wherein said relay-operated controller can be determined by means of the circuit that is connected to described Five-terminals.
19. the relay device for switchable load according to claim 17, wherein, described relay-operated controller is integrated in the housing with described relay.
20. the relay device for switchable load according to claim 17, wherein, described change of current device comprises at least one resistor.
21. the relay device for switchable load according to claim 17, wherein, described change of current device comprises at least one Zener diode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/232712 | 2011-09-14 | ||
| US13/232,712 US8773836B2 (en) | 2008-05-15 | 2011-09-14 | Relay controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103000448A true CN103000448A (en) | 2013-03-27 |
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ID=47740341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103404830A Pending CN103000448A (en) | 2011-09-14 | 2012-09-14 | Relay controller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103000448A (en) |
| DE (1) | DE102012108630A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI690963B (en) * | 2019-05-31 | 2020-04-11 | 大陸商昂寶電子（上海）有限公司 | Drive circuit and rapid demagnetization method for inductive relay |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014107884A1 (en) * | 2014-06-04 | 2015-12-17 | Epcos Ag | relay |
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| US6061224A (en) * | 1998-11-12 | 2000-05-09 | Burr-Brown Corporation | PWM solenoid driver and method |
| US20030020994A1 (en) * | 2001-07-13 | 2003-01-30 | Lars Boden | Optical system and method in an optical system |
| US6520279B2 (en) * | 2000-01-25 | 2003-02-18 | Omron Corporation | Current-carrying control device and electric power steering apparatus |
| US20040201945A1 (en) * | 2001-07-12 | 2004-10-14 | Thomas Dovheim | Solenoid control using voltage control of freewheel current decay |
| US20050047053A1 (en) * | 2003-07-17 | 2005-03-03 | Meyer William D. | Inductive load driver circuit and system |
| US20080170348A1 (en) * | 2007-01-15 | 2008-07-17 | Yazaki North America, Inc. | Constant current relay driver with controlled sense resistor |
| US20090284889A1 (en) * | 2008-05-15 | 2009-11-19 | Michael Lenz | Relay controller for controlling an excitation current of a relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4410819C2 (en) | 1993-03-26 | 1996-08-14 | Schleicher Relais | Circuit arrangement for the operation of a relay |
-
2012
- 2012-09-14 CN CN2012103404830A patent/CN103000448A/en active Pending
- 2012-09-14 DE DE201210108630 patent/DE102012108630A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6061224A (en) * | 1998-11-12 | 2000-05-09 | Burr-Brown Corporation | PWM solenoid driver and method |
| US6520279B2 (en) * | 2000-01-25 | 2003-02-18 | Omron Corporation | Current-carrying control device and electric power steering apparatus |
| US20040201945A1 (en) * | 2001-07-12 | 2004-10-14 | Thomas Dovheim | Solenoid control using voltage control of freewheel current decay |
| US20030020994A1 (en) * | 2001-07-13 | 2003-01-30 | Lars Boden | Optical system and method in an optical system |
| US20050047053A1 (en) * | 2003-07-17 | 2005-03-03 | Meyer William D. | Inductive load driver circuit and system |
| US20080170348A1 (en) * | 2007-01-15 | 2008-07-17 | Yazaki North America, Inc. | Constant current relay driver with controlled sense resistor |
| US20090284889A1 (en) * | 2008-05-15 | 2009-11-19 | Michael Lenz | Relay controller for controlling an excitation current of a relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI690963B (en) * | 2019-05-31 | 2020-04-11 | 大陸商昂寶電子（上海）有限公司 | Drive circuit and rapid demagnetization method for inductive relay |
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| Publication number | Publication date |
|---|---|
| DE102012108630A1 (en) | 2013-03-14 |
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Application publication date: 20130327 |