Liquid cooling plate for soft package power battery and battery module

Abstract

The invention discloses a liquid cooling plate for a soft package power battery and a battery module. The liquid cooling plate comprises a rectangular plate body and at least one PTC electric heatingstrip, wherein a plurality of runners are arranged in the plate body; a water inlet and a water outlet are formed in two ends of the plate body separately; the runners communicate with the water inletand the water outlet; the at least one PTC electric heating strip is fixed on the side wall of the plate body; and each runner is intersected with the at least one PTC electric heating strip. The battery module comprises a building block battery block; support vertical plates are arranged at two ends of the building block battery block and the liquid cooling plates are arranged at two sides; andthe support vertical plates are fixedly connected with the liquid cooling plates to form the battery module. The liquid cooling plate disclosed by the invention is capable of quickly cooling and preheating each single battery at the same time, so that a temperature field of the whole battery module is good in uniformity; the service life of the battery module is prolonged; and the use security ofthe battery module is improved.

Description

technical field [0001] The invention relates to a liquid cold plate for a soft-package power battery and a battery module with the liquid cold plate, belonging to the technical field of batteries. Background technique [0002] The power battery of an electric vehicle must work in a suitable temperature range, which requires a thermal management system to regulate the battery temperature. The functions of the thermal management system include low-temperature heating and high-temperature heat dissipation, while taking into account the temperature uniformity of batteries at different locations. [0003] At present, the demand of electric vehicle users for high-power charging continues to increase, but the calorific value of the battery cell (or battery cell) will increase during high-power charging, which puts higher demands on the heat dissipation capacity of the thermal management system. requirements. [0004] In terms of the battery module level, there are four main ways ...

AI Technical Summary

Problems solved by technology

However, the cooling capacity of this air-cooled cooling method is weaker than that of liquid cooling under high-power conditions.

[0008] However, the traditional liquid cooling heating method is usually implemented by heating the fluid outside the battery pack, and then heating the liquid cold plate and the battery through the hot fluid. It can be seen from actual use that this heating method makes the hot fluid in the pipeline There will be a lot of energy loss during the flow process, and the heating effect is not ideal

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