Liquid cooling heat management device for power battery pack of vehicle

Abstract

The invention discloses a liquid cooling heat management device for a power battery pack of a vehicle. The device comprises a cooling liquid distributor, a plurality of liquid cooling plates and the battery pack; channels are formed in the liquid cooling plates; a liquid inlet and a liquid outlet are formed at the same time; and the battery pack is located between the two adjacent liquid cooling plates. The channels in the liquid cooling plates can be set according to a heat generating characteristic and temperature distribution of a power battery individual during working, so that heat generated during charging and discharging of the power battery pack of the new energy vehicle can be taken away efficiently; batteries can be heated by introducing a heat fluid into a heat management structure under the condition that heating is needed, so that the battery of the electric vehicle can work at a proper working temperature for a long time; and meanwhile, due to the fact that the liquid cooling capacity is strong, a reasonable cooling plate internal channel structure can be arranged as needed to reinforce heat transfer, so that the compactness of the battery pack can be improved.

Description

technical field [0001] The invention belongs to radiators for electronic appliances, in particular to a liquid cooling heat management device for a power battery pack for vehicles. Background technique [0002] The battery pack is one of the core components of pure electric vehicles and hybrid vehicles. Its performance directly affects the performance of the vehicle, and the performance and life of the battery are closely related to its working temperature. The battery pack will generate heat during charging and discharging, which will increase the overall temperature of the battery pack. Excessive temperature will seriously affect the performance and life of the battery pack. When the ambient temperature is very low, the battery needs to be heated to improve its charging and discharging efficiency. Therefore, effective thermal management of the battery pack to maintain its working temperature within a better temperature range plays a decisive role in improving the performa...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional battery pack air-cooled radiator has defects

The traditional air-cooling method achieves heat exchange through convection with the surface of the battery. The heat transfer coefficient is small, and it is limited by the heat exchange area of ​​the battery pack, resulting in low cooling efficiency.

In addition, structurally speaking, the surface of the battery pack in the central area of ​​the battery pack of the traditional air-cooled radiator cannot fully contact with the air, resulting in excessive temperature of the local battery cells in the battery pack, which will eventually reduce the efficiency and reliability of the battery pack

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