A regenerative heat pump thermal management system and control method

Abstract

The application discloses a heat accumulation type heat pump heat management system and a control method, and belongs to the field of automobile heat management systems. The technical scheme adopted by the application is a heat accumulation type heat pump heat management system, which comprises an air conditioner refrigerant circuit, a power battery cooling liquid circuit and a motor cooling circulation circuit. In summer, the heat of the passenger cabin or the power battery is transferred to the external environment through the outdoor condenser, and the energy transfer is low in energy consumption and high in efficiency. In winter, when charging, the power battery has the characteristics that the charging current becomes smaller as the SOC increases, and the charging power provided by the charging pile is unchanged. The electric quantity is stored in the cooling liquid, the power battery, the second auxiliary water tank and the motor in the form of heat. After charging, the heat is transferred to the passenger cabin in the form of a primary energy transfer mode and a secondary energy transfer mode, the problem of excessive use of power battery electric quantity is avoided, and the driving range of the whole vehicle is improved.

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