To provide a vehicle battery cooling device which can eliminate or suppress a cooling variation of a vehicle battery, and also can improve an oil return property.SOLUTION: A vehicle battery cooling device 61 comprises a compressor 2, an outdoor heat exchanger 7, a battery exchanger 64 arranged at a battery 55 so as to be conductive in heat, an auxiliary expansion valve 73, and an air-conditioning controller 32. The air-conditioning controller 32 absorbs heat by the battery heat exchanger after decompressing a refrigerant which is heat-radiated by the outdoor heat exchanger by using the auxiliary expansion valve. A valve opening of the auxiliary expansion valve is controlled in a direction in which an overheat degree SHbout is not imparted to the refrigerant which is outputted from the battery heat exchanger on the basis of an output of an outlet sensor for detecting a temperature and the pressure of the refrigerant which is outputted from the battery heat exchanger.SELECTED DRAWING: Figure 1

    【課題】車両のバッテリの冷却ムラを解消若しくは抑制し、オイル戻り性も改善することができる車両のバッテリ冷却装置を提供する。【解決手段】車両のバッテリ冷却装置61は、圧縮機2と、室外熱交換器7と、バッテリ55と熱伝導可能に設けられたバッテリ用熱交換器64と、補助膨張弁73と、空調コントローラ32を備える。空調コントローラ32は、室外熱交換器にて放熱した冷媒を補助膨張弁により減圧した後、バッテリ用熱交換器にて吸熱させる。バッテリ用熱交換器から出た冷媒の温度と圧力を検出する出口センサの出力に基づき、バッテリ用熱交換器から出た冷媒に過熱度SHboutを付けない方向で補助膨張弁の弁開度を制御する。【選択図】図1


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    Title :

    VEHICLE BATTERY COOLING DEVICE AND VEHICLE AIR-CONDITIONING DEVICE HAVING THE SAME


    Additional title:

    車両のバッテリ冷却装置及びそれを備えた車両用空気調和装置


    Contributors:

    Publication date :

    2021-03-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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