The invention provides an electric vehicle thermal management system for battery fast charging, which comprises an air conditioning system or a heat pump system, a battery thermal management system and a motor electric control cooling system, and the electric vehicle thermal management system comprises two sets of compression refrigeration systems which are respectively used for passenger compartment refrigeration and battery refrigeration. When the battery is in a fast charging state, the two sets of compression refrigeration systems are both used for cooling the battery, the selection range of the compressor and the expansion valve model is widened, and the compressor/expansion valve can be controlled more accurately and located in the most suitable working range. Heat of the motor electric control cooling loop is transmitted to the battery heat management loop through the water-water heat exchanger, the heat can be used for heating a battery and can also be used as a heat source of the heat pump system for warming a passenger compartment, and the state switching of the air conditioning system and the heat pump depends on the on-off of an electromagnetic valve, so that the heat of the motor electric control system is utilized; large power consumption caused by heating a passenger compartment or a battery by only adopting PTC in winter is reduced, and the endurance mileage of the electric commercial vehicle in winter is increased.
本申请提供了一种用于电池快充的电动车整车热管理系统,包括空调系统或热泵系统、电池热管理系统及电机电控冷却系统,整车热管理系统包含两套压缩制冷系统,分别用于乘员舱制冷和电池制冷。当电池快充状态时,两套压缩制冷系统全都用于冷却电池,既增加了压缩机及膨胀阀型号选择的范围,也可使压缩机/膨胀阀更精确的控制以及处于最宜工作区间。通过水水换热器将电机电控冷却回路的热量传递到电池热管理回路,可用于加热电池,也可作为热泵系统的热源为乘员舱取暖使用,而空调系统与热泵状态的切换,依靠电磁阀通断,使电机电控系统的热量得到利用,降低冬季单纯采用PTC给乘员舱或电池加热带来的较大电耗,增加电动商用车冬季的续航里程。
Electric vehicle thermal management system for battery fast charging
一种用于电池快充的电动车整车热管理系统
2023-09-15
Patent
Elektronische Ressource
Chinesisch
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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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 |
Europäisches Patentamt | 2022
|Heat management system for electric commercial vehicle with fast charging battery
Europäisches Patentamt | 2023
|Thermal Management System for Fast Charge Battery Electric Vehicle
Europäisches Patentamt | 2017
|