The present invention relates to a clutch current control circuit and an electric control valve having the same. According to an embodiment of the present invention, the clutch current control circuit, which is a circuit which controls a current of a clutch connected to a compressor, comprises: a strain gauge whose resistance value varies according to a movement volume of an electric control valve (ECV) shaft; a switching device which performs a switching operation by comparing a gate-source voltage determined in accordance with changes in the resistance value of the strain gauge with a threshold voltage, and which generates a flow of a first clutch current by a first switching operation state; and a resistance parallelly connected to the switching device to generate a flow of a second clutch current by a second switching operation state of the switching device. The present invention aims to provide the clutch current control circuit and the electric control valve having the same capable of improving efficiency and mileage of a vehicle.
본 발명은 클러치 전류 제어 회로 및 이를 구비한 전자제어밸브에 관한 것으로, 본 발명의 실시예에 따른 클러치 전류 제어 회로 및 이를 구비한 전자제어밸브는, 압축기와 연결되는 클러치의 전류를 제어하는 회로로서, ECV(Electric Control Valve) 샤프트의 이동량에 따라 저항값이 가변되는 스트레인게이지(straingauge); 상기 스트레인게이지의 저항값 변화에 따라 결정된 게이트-소스 전압과, 임계 전압의 비교를 통해 스위칭 동작을 수행하되, 제1 스위칭 동작 상태에 의해 제1 클러치 전류의 흐름이 발생하는 스위칭소자; 및 상기 스위칭소자와 병렬로 연결하되, 상기 스위칭소자의 제2 스위칭 동작 상태에 의해 제2 클러치 전류의 흐름이 발생하는 저항;을 포함한다.
CLUTCH CURRENT CONTROL CIRCUIT AND ELECTRIC CONTROL VALVE HAVING THE SAME
클러치 전류 제어 회로 및 이를 구비한 전자제어밸브
2020-08-18
Patent
Electronic Resource
Korean
IPC: | F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F16K VALVES , Ventile |
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