The invention relates to a battery heat management system for an electric tractor, which is characterized by comprising an in-vehicle warm air core body, a four-way valve, a PTC (Positive Temperature Coefficient), an air-conditioning water pump, a third three-way valve, a second heat exchanger, an expansion kettle, a first heat exchanger, a compressor, a second three-way valve, an expansion valve, a battery pack, a condenser, a water pump and a first three-way valve. According to the battery thermal management system for the electric tractor provided by the embodiment of the invention, the branch circuit is arranged in the loop of the cooling unit, so that the heating and cooling modes of the battery pack are switched, and the battery works in the optimal range; one PTC is adopted to heat the battery and the cockpit at the same time, the system integration degree is improved, and the system cost is reduced; by arranging the four-way valve in the air conditioning system, waste heat recovery of the battery pack is achieved, heat of the battery pack is used for heating the cockpit, and energy loss of the system is reduced.

    本申请涉及一种电动拖拉机用电池热管理系统,其特征在于,包括:车内暖风芯体、四通阀、PTC、空调水泵、第三三通阀、第二热交换器、膨胀水壶、第一热交换器、压缩机、第二三通阀、膨胀阀、电池包、冷凝器、水泵和第一三通阀。本申请实施例提供的一种电动拖拉机用电池热管理系统通过在冷却机组回路设置支路,实现对电池包的加热制冷模式切换,使电池工作在最佳范围内;采用1个PTC同时对电池和驾驶舱进行加热,提升系统集成度,降低系统成本;通过在空调系统设置四通阀,实现电池包余热回收,利用电池包的热量对驾驶舱进行加热,降低系统能量损失。


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    Title :

    Battery thermal management system for electric tractor


    Additional title:

    一种电动拖拉机用电池热管理系统


    Contributors:
    LIU YANHUI (author) / BU WENCHUAN (author) / ZHANG MENG (author) / ZHANG CHUANHONG (author)

    Publication date :

    2023-10-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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



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