The invention belongs to heating/cooling equipment, and discloses an auto-cascade heat pump air conditioning system for electric vehicle thermal management. Comprising a gas-liquid separator, a compressor, a battery working medium pump, a compartment internal heat exchanger, a three-medium heat exchanger, a battery heat exchanger, a four-way reversing valve, a first three-way reversing valve, a second three-way reversing valve, a heat regenerator, a first expansion valve, a second expansion valve, a first electromagnetic valve and a second electromagnetic valve. The gas-liquid separator is mainly used for effectively separating a non-azeotropic working medium. The system has three operation modes, namely a defrosting mode, a heating mode and a refrigerating mode. When the external evaporator is frosted, the system is automatically switched to a defrosting mode for operation; when the temperature of the external environment is high and a compartment has a cold use requirement, the system is automatically switched to a refrigeration mode for operation; when the temperature of the external environment is low and the compartment has the heat utilization requirement, the system is automatically switched to the heating mode for operation. The heating and cooling effects are considered, and meanwhile the defrosting requirement of the heat pump is met.

    本发明属于加热/冷却设备,公开了一种面向电动汽车热管理的自复叠热泵空调系统,包括气液分离器、压缩机、电池工质泵、车厢内部换热器、三介质换热器、电池换热器、四通换向阀、第一三通换向阀、第二三通换向阀、回热器、第一膨胀阀、第二膨胀阀、第一电磁阀以及第二电磁阀;气液分离器主要用于对非共沸工质的有效分离。系统拥有三种运行模式:除霜模式、制热模式、制冷模式。当外部蒸发器结霜时,系统将自动切换至除霜模式运行;当外部环境温度较高,车厢存在用冷需求时,系统将自动切换至制冷模式运行;当外部环境温度较低,车厢存在用热需求时,系统将自动切换至制热模式运行。本发明兼顾供暖和供冷效果,同时满足热泵除霜要求。


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    Title :

    Auto-cascade heat pump air conditioning system for electric vehicle thermal management


    Additional title:

    一种面向电动汽车热管理的自复叠热泵空调系统


    Contributors:
    LI MINXIA (author) / ZHANG JIAXING (author) / ZHANG CE (author) / DANG CHAOBIN (author) / TIAN HUA (author)

    Publication date :

    2024-09-27


    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



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