Liquid cooling and heating integrated power lithium battery pack

Abstract

The invention relates to a liquid cooling and heating integrated power lithium battery pack and belongs to the technical field of power lithium battery pack. The invention mainly solves the problem that the space of a pack is insufficient due to the adoption of a heating device inside the pack. The invention is mainly characterized in that the liquid cooling and heating integrated power lithium battery pack comprises a lithium battery box, a battery management system, a liquid cooling plate, a lithium battery module, a pump, a triple valve, a fin radiator, a radiator fan and a heater; the battery management system, the liquid cooling plate and the lithium battery module are positioned inside the lithium battery box; the liquid cooling plate is in contact with the lithium battery module; the pump, the triple valve, the fin radiator, the radiator fan and the heater are positioned outside the lithium battery box; the triple valve is respectively connected to the pump, the fin radiator and the heater through water pipes; the other end of the pump is connected to one end of the liquid cooling plate through a water pipe; and the other ends of the fin radiator and the heater are connected to the other end of the liquid cooling plate through water pipes. By integrating liquid cooling and heating, internal space dimension of the pack is saved. The invention is mainly applicable to a vehicle-mounted power lithium battery pack.

Description

technical field [0001] The invention belongs to the technical field of power lithium battery PACK. It specifically relates to a liquid cooling and heating integrated power lithium battery PACK. The battery management system automatically controls the heat exchange liquid to flow into the liquid cooling circuit or the power lithium battery PACK of the heating circuit according to the temperature of the lithium battery module. The heat exchange flow in the liquid cooling plate The liquid can transfer heat to the lithium battery module, and can also take the heat out of the lithium battery module. Background technique [0002] The working temperature range of power lithium batteries is usually 0~40°C. If the temperature is too low, the pressure drop will increase, and if the temperature is too high, it will cause unsafe factors and reduce the service life of the battery. Vehicle power lithium battery PACK has to deal with extreme high temperature in summer and extreme cold in ...

AI Technical Summary

Problems solved by technology

[0002] The working temperature range of power lithium battery is usually 0~40℃, too low temperature will lead to increased pressure drop, and too high temperature will cause unsafe factors and reduce battery life

Vehicle power lithium battery PACK has to deal with extreme high temperature in summer and extreme cold in winter. Due to problems such as complex structure and insufficient space, it is urgent to design a power lithium battery PACK that intelligently solves the heating and cooling problems without causing a bloated and complicated structure and does not take up too much space in the PACK.

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