Graphene and heat pump coupled heating and cooling device for power battery pack

The invention discloses a graphene and heat pump coupled heating and cooling device for a power battery pack. The device is characterized by being formed by coupling an air heat pump preheating device, an electric heater preheating device and a liquid cooling device; a heat management device is formed by sequentially connecting a battery pack (1), an electromagnetic valve (3), a condenser (4) and a compressor (5). The raw material of an electric heater adopted by the preheating system is graphene, and an auxiliary battery pack provides electricity for the heater. Temperature control probes are distributed in the battery pack, when the temperature is cold, low and high, the heater preheating system, the air heat pump preheating device and the liquid cooling device control the temperature of the power battery respectively, it is guaranteed that the power battery works at the proper temperature, and therefore the service life of the automobile battery pack is prolonged. 本发明公开了一种耦合石墨烯与热泵的动力电池组加热及冷却装置，其特征在于由空气热泵预热