CN204613629U - A kind of power relay control circuit - Google Patents

A kind of power relay control circuit Download PDF

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Publication number
CN204613629U
CN204613629U CN201520271520.6U CN201520271520U CN204613629U CN 204613629 U CN204613629 U CN 204613629U CN 201520271520 U CN201520271520 U CN 201520271520U CN 204613629 U CN204613629 U CN 204613629U
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China
Prior art keywords
power relay
controller
relay
signal
coil
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CN201520271520.6U
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Chinese (zh)
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李晓辉
米新锋
张秀锋
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Vertiv Tech Co Ltd
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Emerson Network Power Co Ltd
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Abstract

The utility model relates to a kind of power relay control circuit, comprise: shunt, first power relay and the second power relay, the the first power relay controller controlling described first power relay is electrically connected with described first power relay, the the second power relay controller controlling described second power relay is electrically connected with described second power relay, with described shunt, described first power relay controller and described second power relay controller electrical connection are with the system controller sending control signals to described first power relay controller and described second power relay controller.Implement power relay control circuit of the present utility model, by adopting the first and second power relay controllers to assist control first and second power relay, therefore device cost is low, installing space is little and installation difficulty is little.

Description

A kind of power relay control circuit
Technical field
The utility model relates to communication power supply field, more particularly, relates to a kind of power relay control circuit.
Background technology
Along with making constant progress of communication power supply technology, the power density of rectification module is more and more higher, volume is more and more less, and the miniaturization of communication power supply has become following development trend.Therefore, tradition adopts the power relay control circuit of contactor, shunt composition because its device cost is high, installing space is large and installation difficulty is large, and can not meet the demand of power-supply system miniaturization.Therefore, need that a kind of device cost is low, installing space is little and the power relay control circuit that installation difficulty is little.
Utility model content
The technical problems to be solved in the utility model is, device cost for the power relay control circuit of prior art is high, installing space is large and the defect that installation difficulty is large, provides that a kind of device cost is low, installing space is little and the power relay control circuit that installation difficulty is little.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of power relay control circuit, comprise; Shunt, the first power relay and the second power relay, the the first power relay controller controlling described first power relay is electrically connected with described first power relay, be electrically connected with described second power relay the second power relay controller controlling described second power relay, be electrically connected with described shunt, described first power relay controller and described second power relay controller the system controller sending control signals to described first power relay controller and described second power relay controller.
In power relay control circuit described in the utility model, described first power relay controller comprises the first signal relay; Described second power relay controller comprises secondary signal relay.
In power relay control circuit described in the utility model, the first end of the coil of described first signal relay is connected to the first control signal end of described system controller, second end is connected to the second control signal end of described system controller, the moving contact of described first signal relay is connected to the system busbar output cathode of described system controller, the normally closed haptic element of described first signal relay connects the first end of the coil of described first power relay, second end connected system busbar output negative pole of the coil of described first power relay, the normally opened contact of described first power relay is connected between the first end of described shunt and described system busbar output negative pole, second end of described shunt is connected to battery cathode, the first end that described shunt signal exports is connected to the first shunting signal end of described system controller, signal exports the second shunting signal end that the second end is connected to described system controller, the first end of the coil of described secondary signal relay is connected to the 3rd control signal end of described system controller, second end is connected to the 4th control signal end of described system controller, the moving contact of described secondary signal relay is connected to the system busbar output cathode of described system controller, the normally closed haptic element of described secondary signal relay connects the first end of the coil of described second power relay, second end of the coil of described second power relay connects described system busbar output negative pole, the normally opened contact of described second power relay is connected between insignificant load and system busbar output negative pole.
In power relay control circuit described in the utility model, described power relay control circuit also comprises the first fly-wheel diode, second fly-wheel diode, 3rd fly-wheel diode and the 4th fly-wheel diode, the anode of described first fly-wheel diode connects the second end of the coil of described first power relay, negative electrode connects the first end of the coil of described first power relay, the anode of described second fly-wheel diode connects the second end of the coil of described first signal relay, negative electrode connects the first end of the coil of described first signal relay, the anode of described 3rd fly-wheel diode connects the second end of the coil of described second power relay, negative electrode connects the first end of described second power relay coil, the anode of described 4th fly-wheel diode connects the second end of the coil of secondary signal relay, negative electrode connects the first end of the coil of described secondary signal relay.
In power relay control circuit described in the utility model, described power relay control circuit also comprises the first current-limiting resistance, second current-limiting resistance, first divider resistance and the second divider resistance, described first current-limiting resistance is connected between the second end of the anode of described first fly-wheel diode and the coil of described first power relay, described first divider resistance is connected between the first end of the first control signal end of described system controller and the coil of described first signal relay, described second current-limiting resistance is connected between the anode of described 3rd fly-wheel diode and the second end of described second power relay coil, described second divider resistance is connected between the 3rd control signal end of described system controller and the first end of described secondary signal relay coil.
In power relay control circuit described in the utility model, described first power relay controller comprises the first triode, the 3rd divider resistance and the 4th divider resistance; Described second power relay controller comprises the second triode, the 5th divider resistance and the 6th divider resistance.
In power relay control circuit described in the utility model, the base stage of described first triode connects the second control signal end of described system controller, emitter connected system busbar output negative pole, collector connects the first end of the coil of described first power relay, second end connected system busbar output cathode of the coil of described first power relay, the normally opened contact of described first power relay is connected between the first end of described shunt and described system busbar output negative pole, second end of described shunt is connected to battery cathode, the first end that described shunt signal exports is connected to the first shunting signal end of described system controller, signal exports the second shunting signal end that the second end is connected to described system controller, the first end that the base stage of described second triode connects the 4th control signal end of described system controller, emitter connected system busbar output negative pole, collector connect the coil of described second power relay, second end connected system busbar output cathode of the coil of described second power relay, the normally opened contact of described second power relay is connected between load and described system busbar output negative pole, described 3rd divider resistance is connected between the base stage of described first triode and the second control signal end of described system controller, described 4th divider resistance is connected between the second control signal end of described system controller and described system busbar output cathode, described 5th divider resistance is connected between the base stage of described second triode and the 4th control signal end of described system controller, and described 6th divider resistance is connected between the 4th control signal end of described system controller and described system busbar output cathode.
In power relay control circuit described in the utility model, described power relay control circuit comprises the first fly-wheel diode, first current-limiting resistance, second fly-wheel diode and the second current-limiting resistance, the anode of described first fly-wheel diode connects the first end of described first power relay coil, negative electrode is connected to the second end of the first power relay coil through described first current-limiting resistance, the anode of described second fly-wheel diode connects the first end of described second power relay coil, negative electrode is connected to the second end of the second power relay coil through described second current-limiting resistance.
In power relay control circuit described in the utility model, described shunt, described first power relay, described second power relay, described first power relay controller, described second power relay controller and described system controller are on a printed circuit integrated.
Implement power relay control circuit of the present utility model, by adopting the first and second power relay controllers to assist control first and second power relay, therefore device cost is low, installing space is little and installation difficulty is little.Further, by adopting signal relay or triode as power relay controller, device cost is lower, circuit is more simple, technique is better.Further, by using fly-wheel diode, current-limiting resistance, the damage to system when not only eliminating relay coil power-off, prevents thunderbolt, surge on the impact of fly-wheel diode.Further, by using divider resistance, widen the range of choice of signal relay coil amount operating voltage, the controlling functions of power relay shown in the relay that cost can be adopted so cheaper realizes.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the system chart of power relay control circuit of the present utility model;
Fig. 2 is the circuit diagram of the first embodiment of power relay control circuit of the present utility model;
Fig. 3 is the circuit diagram of the second embodiment of power relay control circuit of the present utility model;
Fig. 4 is the circuit diagram of the 3rd embodiment of power relay control circuit of the present utility model;
Fig. 5 is the circuit diagram of the 4th embodiment of power relay control circuit of the present utility model.
Embodiment
Fig. 1 is the system chart of power relay control circuit of the present utility model.As shown in Figure 1, this power relay control circuit comprises shunt RL1, the first power relay RLY1 and the second power relay RLY2, the first power relay controller 20 and the second power relay controller 30 and system controller 10.As shown in Figure 1, described system controller 10 and the first power relay controller 20 and the second power relay controller 30 are electrically connected control signal to be sent to respectively described first power relay controller 20 and the second power relay controller 30 respectively.Described first power relay controller 20 is electrically connected to control described first power relay RLY1 with described first power relay RLY1.Described second power relay controller 30 is electrically connected to control described second power relay RLY2 with described second power relay RLY2.Described shunt RL1 is electrically connected to receive shunt sampled signal with described system controller 10.
When power-supply system normally works, described first power relay controller 20 controls described first power relay RLY1 and closes, and described second power relay controller 30 controls described second power relay RLY2 and closes, and then connects major loop.When power-supply system needs to start battery protection; described system controller 10 sends electric control signal under the first via; based on electric control signal under the described first via, described second power relay controller 30 controls described second power relay RLY2 and disconnects, thus disconnects insignificant load branch.In like manner, this system controller 10 can send electric control signal under the second tunnel, and based on electric control signal under this second tunnel, described first power relay controller 20 controls described first power relay RLY1 and disconnects, thus disconnect important load branch road, such system cut-off.
In the utility model, can adopt any power relay controller such as, as described first power relay controller 20 and the second power relay controller 30, switching tube, signal relay, on-off circuit etc. of the present utility model.Those skilled in the art can adopt any known switching device and/or on-off circuit in this area.In the utility model, described shunt RL1, described first power relay RLY1, described second power relay RLY2, described first power relay controller, described second power relay controller and described system controller 10 can be on a printed circuit integrated, thus reduce installing space further, shorten when installing public, reduce costs and raise the efficiency.
Implement power relay control circuit of the present utility model, by adopting the first and second power relay controllers to assist control first and second power relay, therefore device cost is low, installing space is little and installation difficulty is little.
Fig. 2 is the circuit diagram of the first embodiment of power relay control circuit of the present utility model.As shown in Figure 2, this power relay control circuit comprises shunt RL1, the first power relay RLY1 and the second power relay RLY2, the first signal relay RLY3 and secondary signal relay R LY4 and system controller 10.As shown in Figure 2, the second control signal end LVD1-that the first end of the coil of described first signal relay RLY3 is connected to the first control signal end LVD1+ of described system controller 10, the second end is connected to described system controller 10 thus receive lower electric control signal.The first end that the moving contact of described first signal relay RLY3 is connected to the system busbar output cathode BUS+ of described system controller 10, the normally closed haptic element of described first signal relay RLY3 connects the coil of described first power relay RLY1.Second end connected system busbar output negative pole BUS-of the coil of described first power relay RLY1.The normally opened contact of described first power relay RLY1 is connected between the first end of described shunt RL1 and described system busbar output negative pole BUS-.Second end of described shunt RL1 is connected to battery cathode, and described shunt RL1 signal exports that first end is connected to the first shunting signal end RL+ of described system controller 10, signal exports the second end and is connected to the second shunting signal end RL-of described system controller 10 thus receives shunting signal.The first end of the coil of described secondary signal relay R LY4 is connected to the 3rd control signal end LVD2+ of described system controller 10, the second end is connected to the 4th control signal end LVD2-of described system controller 10 thus receives lower electric control signal.The first end that the moving contact of described secondary signal relay R LY4 is connected to the system busbar output cathode BUS+ of described system controller 10, the normally closed haptic element of described secondary signal relay R LY4 connects the coil of described second power relay RLY2.Second end of the coil of described second power relay RLY2 connects described system busbar output negative pole BUS-, and the normally opened contact of described second power relay RLY2 is connected between load NPL and system busbar output negative pole BUS-.Described system busbar output negative pole BUS-can connect important load, and load NPL is insignificant load.
In the present embodiment, the first signal relay RLY3 and secondary signal relay R LY4 is used for control first power relay RLY1 and the second power relay RLY2 respectively.The charging and discharging currents of shunt RL1 sampling battery, and feed back to system controller 10.First control signal end LVD1+ and the second control signal end LVD1-of described system controller 10 export electric control signal under a road, thus control described first power relay RLY1 by the first signal relay RLY3.3rd control signal end LVD2+ and the 4th control signal end LVD2-of described system controller 10 export electric control signal under a road, thus control described second power relay RLY2 by secondary signal relay R LY4.
When power-supply system normally works, the both end voltage of the first control signal end LVD1+, the second control signal end LVD1-, the 3rd control signal end LVD2+ and the 4th control signal end LVD2-is 0V.The normally closed feeler of the first signal relay RLY3 and secondary signal relay R LY4 remains on closure state, and the coil of the first power relay RLY1 and the second power relay RLY2 obtains electric, and therefore its normally opened contact closes, and connects power main loop.
When power-supply system needs to start battery protection, the 3rd control signal end LVD2+ and the 4th control signal end LVD2-first provides electric control signal under a road.Secondary signal relay R LY4 action, its normally closed haptic element disconnects, and cuts off the voltage of the coil of the second power relay RLY2, causes its normally opened contact to disconnect, disjunction insignificant load branch.In like manner, when the first control signal end LVD1+ and the second control signal end LVD1-provides electric control signal under a road, cell circuit will be cut off, disjunction important load branch road, system cut-off.
In the utility model, described shunt RL1, described first power relay RLY1, described second power relay RLY2, the first signal relay RLY3, secondary signal relay R LY4 and described system controller 10 can be on a printed circuit integrated, thus reduce installing space further, shorten when installing public, reduce costs and raise the efficiency.
Implement power relay control circuit of the present utility model, by adopting signal relay as power relay controller, device cost is lower, circuit is more simple, technique is better.
Fig. 3 is the circuit diagram of the second embodiment of power relay control circuit of the present utility model.First embodiment of the power relay control circuit shown in the embodiment shown in Fig. 3 and Fig. 2 is similar, its difference is, the power relay control circuit shown in Fig. 3 comprises sustained diode 1, sustained diode 3, sustained diode 2 and sustained diode 4 further.The anode of described sustained diode 1 connects the second end of described first power relay RLY1 coil, the first end of the described first power relay RLY1 coil of negative electrode connection.The anode of described sustained diode 3 connects the second end of described first signal relay RLY3 coil, the first end of the described first signal relay RLY3 coil of negative electrode connection.The anode of described sustained diode 2 connects the second end of described second power relay RLY2 coil, the first end of the described second power relay RLY2 coil of negative electrode connection.The first end that the anode of described sustained diode 4 connects the second end of described secondary signal relay R LY4 coil, negative electrode connects described system secondary signal relay R LY4 coil.
In the utility model, described shunt RL1, described first power relay RLY1, described second power relay RLY2, the first signal relay RLY3, secondary signal relay R LY4 and described system controller 10, and described sustained diode 1-D4 can be on a printed circuit integrated, thus reduce installing space further, shorten when installing public, reduce costs and raise the efficiency.
Implement power relay control circuit of the present utility model, by adopting signal relay as power relay controller, device cost is lower, circuit is more simple, technique is better.Further, by using fly-wheel diode, reverse overvoltage during relay coil power-off can be eliminated, thus avoid the damage to system.
Fig. 4 is the circuit diagram of the 3rd embodiment of power relay control circuit of the present utility model.Second embodiment of the power relay control circuit shown in the embodiment shown in Fig. 4 and Fig. 3 is similar, and its difference is, the power relay control circuit shown in Fig. 4 comprises current-limiting resistance R9, divider resistance R1, current-limiting resistance R10 and divider resistance R5 further.Described current-limiting resistance R9 is connected between the anode of described sustained diode 1 and one end of described first power relay RLY1 coil, described divider resistance R1 is connected between the first control signal end LVD1+ of described system controller 10 and one end of described first signal relay RLY3 coil, described current-limiting resistance R10 is connected between the anode of described sustained diode 2 and one end of described second power relay RLY2 coil, described protective resistance R5 is connected between the 3rd control signal end LVD2+ of described system controller 10 and one end of described secondary signal relay R LY4 coil.
In the present embodiment, owing to being provided with current-limiting resistance R9, R10, can play protection sustained diode 1, D2 when system dc side suffers thunderbolt and surge can not damage; When divider resistance R1, R5 can make the signal voltage exported at the first control signal end LVD1+ of described system controller 10, the second control signal end LVD1-, the 3rd control signal end LVD2+ and the 4th control signal end LVD2-exceed the rated operational voltage of signal relay RLY3, RLY4 coil, also can normally use.
In the utility model, described shunt RL1, described first power relay RLY1, described second power relay RLY2, the first signal relay RLY3, secondary signal relay R LY4, described system controller 10,, described sustained diode 1-D4, described divider resistance (R1, R5), current-limiting resistance (R10, R9) can be on a printed circuit integrated, thus reduce installing space further, shorten when installing public, reduce costs and raise the efficiency.
Implement power relay control circuit of the present utility model, by adopting signal relay as power relay controller, device cost is lower, circuit is more simple, technique is better.Further, by using fly-wheel diode and protective resistance, not only can eliminate reverse overvoltage during relay coil power-off, thus avoiding the damage to system, preventing thunderbolt, surge on the impact of fly-wheel diode.
Fig. 5 is the circuit diagram of the 4th embodiment of power relay control circuit of the present utility model.As shown in Figure 5, this power relay control circuit comprises shunt RL1, the first power relay RLY1 and the second power relay RLY2, triode Q1, triode Q2, divider resistance R1-R4 and system controller 10.Described divider resistance R3 is connected between the base stage of described triode Q1 and the second control signal end LVD1-of described system controller 10, described divider resistance R1 is connected between the second control signal end LVD1-of described system controller 10 and described system busbar output cathode BUS+, described divider resistance R4 is connected between the base stage of described triode Q2 and the 4th control signal end LVD2-of described system controller 10, and described divider resistance R2 is connected between the 4th control signal end LVD2-of described system controller 10 and described system busbar output cathode BUS+.The collector of the emitter connected system busbar output negative pole BUS-of triode Q1, triode Q1 connects the first end of the coil of described first power relay RLY1.Second end connected system busbar output cathode BUS+ of the coil of described first power relay RLY1, the normally opened contact of described first power relay RLY1 is connected between the first end of described shunt RL1 and described system busbar output negative pole BUS-.Second end of described shunt RL1 is connected to battery cathode, and the first end of described shunt RL1 signal output is connected to the first shunting signal end RL+ of described system controller 10, signal exports the second shunting signal end RL-that the second end is connected to described system controller 10.The collector of the emitter connected system busbar output negative pole BUS-of triode Q2, triode Q2 connects the first end of the coil of described second power relay RLY2.Second end connected system busbar output cathode BUS+ of the coil of described second power relay RLY2, the normally opened contact of described second power relay RLY2 is connected between load NPL and described system busbar output negative pole BUS-.
In preferred embodiment shown in Fig. 5, described power relay control circuit also comprises sustained diode 1, current-limiting resistance R9, sustained diode 2 and current-limiting resistance R10, one end of the described first power relay RLY1 coil of anode connection of described sustained diode 1, negative electrode are connected to the other end of the first power relay RLY1 coil through described current-limiting resistance R9, the other end that anode connects one end of described second power relay RLY2 coil, negative electrode is connected to the second power relay RLY2 coil through described current-limiting resistance R10 of described sustained diode 2.In conjunction with embodiment illustrated in fig. 2 known, in simplified embodiment of the present utility model, sustained diode 1, current-limiting resistance R9, sustained diode 2 and current-limiting resistance R10 can omit.
In the embodiment shown in fig. 5, adopt triode Q1 and Q2 substitution signal relay, control the first and second power relay RLY1 and RLY2.When system is normal, the second control signal end LVD1-and the 4th control signal end LVD2-, under the effect of divider resistance R1, R3 and R2, R4, triode Q1, Q2 are in saturation conduction state.First and second power relay RLY1 and RLY2 conducting, connect power main loop.When power-supply system needs to start battery protection; 4th control signal end LVD2-first provides control signal; triode Q2 is in cut-off, switches the coil voltage of the second power relay RLY2, causes its normally opened contact to disconnect; disjunction insignificant load branch; in like manner, when the second control signal end LVD1-provides control signal, cut off cell circuit; disjunction important load branch road, system cut-off.
Implement power relay control circuit of the present utility model, by adopting triode as power relay controller, device cost is lower, circuit is more simple, technique is better.Further, by using fly-wheel diode, divider resistance, the damage to system when not only eliminating relay coil power-off, prevents thunderbolt, surge on the impact of fly-wheel diode.
Although the utility model is described by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, various conversion can also be carried out and be equal to substituting to the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole embodiments fallen within the scope of the claims in the present invention.

Claims (9)

1. a power relay control circuit, it is characterized in that, comprise: shunt, first power relay and the second power relay, the the first power relay controller controlling described first power relay is electrically connected with described first power relay, the the second power relay controller controlling described second power relay is electrically connected with described second power relay, with described shunt, described first power relay controller and described second power relay controller electrical connection are with the system controller sending control signals to described first power relay controller and described second power relay controller.
2. power relay control circuit according to claim 1, is characterized in that, described first power relay controller comprises the first signal relay; Described second power relay controller comprises secondary signal relay.
3. power relay control circuit according to claim 2, it is characterized in that, the first end of the coil of described first signal relay is connected to the first control signal end of described system controller, second end is connected to the second control signal end of described system controller, the moving contact of described first signal relay is connected to the system busbar output cathode of described system controller, the normally closed haptic element of described first signal relay connects the first end of the coil of described first power relay, second end connected system busbar output negative pole of the coil of described first power relay, the normally opened contact of described first power relay is connected between the first end of described shunt and described system busbar output negative pole, second end of described shunt is connected to battery cathode, the first end that described shunt signal exports is connected to the first shunting signal end of described system controller, the second end that described shunt signal exports is connected to the second shunting signal end of described system controller, the first end of the coil of described secondary signal relay is connected to the 3rd control signal end of described system controller, second end is connected to the 4th control signal end of described system controller, the moving contact of described secondary signal relay is connected to the system busbar output cathode of described system controller, the normally closed haptic element of described secondary signal relay connects the first end of the coil of described second power relay, second end of the coil of described second power relay connects described system busbar output negative pole, the normally opened contact of described second power relay is connected between insignificant load and system busbar output negative pole.
4. power relay control circuit according to claim 3, it is characterized in that, described power relay control circuit also comprises the first fly-wheel diode, second fly-wheel diode, 3rd fly-wheel diode and the 4th fly-wheel diode, the anode of described first fly-wheel diode connects the second end of the coil of described first power relay, negative electrode connects the first end of the coil of described first power relay, the anode of described second fly-wheel diode connects the second end of the coil of described first signal relay, negative electrode connects the first end of the coil of described first signal relay, the anode of described 3rd fly-wheel diode connects the second end of the coil of described second power relay, negative electrode connects the first end of described second power relay coil, the anode of described 4th fly-wheel diode connects the second end of the coil of secondary signal relay, negative electrode connects the first end of the coil of described secondary signal relay.
5. power relay control circuit according to claim 4, it is characterized in that, described power relay control circuit also comprises the first current-limiting resistance, second current-limiting resistance, first divider resistance and the second divider resistance, described first current-limiting resistance is connected between the second end of the anode of described first fly-wheel diode and the coil of described first power relay, described first divider resistance is connected between the first end of the first control signal end of described system controller and the coil of described first signal relay, described second current-limiting resistance is connected between the anode of described 3rd fly-wheel diode and the second end of described second power relay coil, described second divider resistance is connected between the 3rd control signal end of described system controller and the first end of described secondary signal relay coil.
6. power relay control circuit according to claim 1, is characterized in that, described first power relay controller comprises the first triode, the 3rd divider resistance and the 4th divider resistance; Described second power relay controller comprises the second triode, the 5th divider resistance and the 6th divider resistance.
7. power relay control circuit according to claim 6, it is characterized in that, the base stage of described first triode connects the second control signal end of described system controller, emitter connected system busbar output negative pole, collector connects the first end of the coil of described first power relay, second end connected system busbar output cathode of the coil of described first power relay, the normally opened contact of described first power relay is connected between the first end of described shunt and described system busbar output negative pole, second end of described shunt is connected to battery cathode, the first end that described shunt signal exports is connected to the first shunting signal end of described system controller, the second end that described shunt signal exports is connected to the second shunting signal end of described system controller, the first end that the base stage of described second triode connects the 4th control signal end of described system controller, emitter connected system busbar output negative pole, collector connect the coil of described second power relay, second end connected system busbar output cathode of the coil of described second power relay, the normally opened contact of described second power relay is connected between load and described system busbar output negative pole, described 3rd divider resistance is connected between the base stage of described first triode and the second control signal end of described system controller, described 4th divider resistance is connected between the second control signal end of described system controller and described system busbar output cathode, described 5th divider resistance is connected between the base stage of described second triode and the 4th control signal end of described system controller, and described 6th divider resistance is connected between the 4th control signal end of described system controller and described system busbar output cathode.
8. power relay control circuit according to claim 7, it is characterized in that, described power relay control circuit comprises the first fly-wheel diode, first current-limiting resistance, second fly-wheel diode and the second current-limiting resistance, the anode of described first fly-wheel diode connects the first end of described first power relay coil, negative electrode connects the second end of described first power relay coil through described first current-limiting resistance, the anode of described second fly-wheel diode connects the first end of described second power relay coil, negative electrode is connected to the second end of the second power relay coil through described second current-limiting resistance.
9. the power relay control circuit according to the claim in claim 1-8 described in any one, it is characterized in that, described shunt, described first power relay, described second power relay, described first power relay controller, described second power relay controller and described system controller are on a printed circuit integrated.
CN201520271520.6U 2015-04-29 2015-04-29 A kind of power relay control circuit Active CN204613629U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106586028A (en) * 2016-12-23 2017-04-26 北京安达维尔科技股份有限公司 System for testing aviation part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106586028A (en) * 2016-12-23 2017-04-26 北京安达维尔科技股份有限公司 System for testing aviation part

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Address before: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2

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