The invention relates to an indirect heat pump air conditioning system, a control method and a pure electric vehicle. When refrigeration and heating of a passenger compartment are started, a vehicle-mounted air conditioner refrigerant exchanges heat indirectly with a cooling liquid loop; therefore, the refrigerant is not directly guided into the passenger compartment, so that the safety risk caused by combustion and explosion of the refrigerant is greatly reduced. The system includes: a first refrigerant circulation loop; a second refrigerant circulation circuit; a first cooling liquid circulation loop; and a second cooling liquid circulation loop; the first cooling liquid circulation loop and the second cooling liquid circulation loop are communicated through a first three-way valve, a second three-way valve, a third three-way valve and a fourth three-way valve; a first three-way valve, a second three-way valve, a third three-way valve and a fourth three-way valve are controlled so that the cooling liquid in the second cooling liquid circulation loop flows into the first cooling liquid circulation loop and then flows back to the second cooling liquid circulation loop, or, the cooling liquid in the first cooling liquid circulation loop and the cooling liquid in the second cooling liquid circulation loop flow independently.
本方案涉及一种间接式热泵空调系统、控制方法及纯电动汽车,在开启乘客舱制冷、制热时,车载空调制冷剂通过与冷却液回路的间接热交换,制冷工质不直接导入乘客舱,极大降低了冷媒工质燃烧、爆破带来的安全风险。该系统包括:第一制冷剂循环回路;第二制冷剂循环回路;第一冷却液循环回路;第二冷却液循环回路;第一冷却液循环回路和第二冷却液循环回路通过第一三通阀、第二三通阀、第三三通阀和第四三通阀连通,通过对第一三通阀、第二三通阀、第三三通阀和第四三通阀的控制,使第二冷却液循环回路中的冷却液流入第一冷却液循环回路中后再流回第二冷却液循环回路,或者,使第一冷却液循环回路中的冷却液和第二冷却液循环回路的冷却液独立流动。
Indirect heat pump air conditioning system, control method and pure electric vehicle
一种间接式热泵空调系统、控制方法及纯电动汽车
2021-09-14
Patent
Electronic Resource
Chinese
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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