JPS6211301U

JPS6211301U -

Info

Publication number: JPS6211301U
Application number: JP10136785U
Authority: JP
Priority date: 1985-07-02
Filing date: 1985-07-02
Publication date: 1987-01-23

Description

[Brief explanation of the drawing]

第１図は本考案に係る電気自動車のＤＣコンタ
クタ励磁制御装置の好適な実施例を示す回路図、
第２図及び第３図は本考案の他の実施例を示す回
路図である。１０……主バツテリ、１２……ＤＣコンタクタ
、１８……ＤＣコンタクタ励磁回路、２０……Ｄ
Ｃコンタクタの励磁コイル、２４……補機バツテ
リ、２８……リレー、３０……励磁電流抑制回路
、３２……リレー制御回路、３４……基準電圧設
定回路、３６……電圧検出回路、３８……コンパ
レータ、４２……駆動回路。 FIG. 1 is a circuit diagram showing a preferred embodiment of a DC contactor excitation control device for an electric vehicle according to the present invention;
2 and 3 are circuit diagrams showing other embodiments of the present invention. 10...Main battery, 12...DC contactor, 18...DC contactor excitation circuit, 20...D
Excitation coil of C contactor, 24...Auxiliary battery, 28...Relay, 30...Excitation current suppression circuit, 32...Relay control circuit, 34...Reference voltage setting circuit, 36...Voltage detection circuit, 38... ... Comparator, 42 ... Drive circuit.

Claims

[Claims for Utility Model Registration] (1) A DC contactor provided on the output side of a main battery to control power supply, and a DC contactor excitation circuit that supplies excitation current from an auxiliary battery to the DC contactor, The DC contactor excitation circuit includes a relay connected in series to the excitation circuit, an excitation current suppression circuit connected in parallel to the relay, and a predetermined reference voltage set in advance so that the voltage of the auxiliary battery exceeds this reference voltage. and a relay control circuit that controls the relay to turn off when the voltage exceeds the limit, and suppresses the excitation current when the voltage of an auxiliary battery increases.
C contactor excitation control device. (2) The device according to claim (1), wherein the excitation current suppression circuit is formed using a diode series circuit connected in parallel to a relay, Control device. (3) A DC contactor excitation control device for an electric vehicle according to claim (1), wherein the excitation current suppression circuit is formed using a resistance circuit connected in parallel to a relay. . (4) A DC contactor excitation control device for an electric vehicle, in which the excitation current suppression circuit is formed using a transistor circuit connected in parallel to a relay, in the device according to claim (1) of utility model registration. . (5) Utility model registration In the device according to any one of claims (1) to (4), the relay control circuit includes: a reference voltage setting circuit; a voltage detection circuit that detects the voltage of an auxiliary battery; a comparator that compares the output of the reference voltage setting circuit and the output of the voltage detection circuit and outputs a predetermined detection signal when the detected voltage exceeds the reference voltage; and the relay when the detection signal is not output from the comparator. A DC contactor excitation control device for an electric vehicle, comprising: a drive circuit that turns on the relay and turns off the relay at the same time a detection signal is output.