Heat exchange plate and battery module

Abstract

The invention discloses a heat exchange plate and a battery module. The heat exchange plate is used for the heat exchange of a secondary battery in a battery module. The heat exchange plate comprisesa body and a plurality of main pipelines; the main pipelines are arranged in the body; a heat exchange medium can circulate in the main pipelines; at least one side surface, opposite to the body, of each main pipeline protrudes by a preset height, wherein the preset height is 2 mm or below; the width of each main pipeline is 8 mm or below. According to the heat exchange plate and the battery module provided by the embodiment of the invention, the least one side surface, opposite to the body, of each main pipeline protrudes by the preset height, so that heat exchange between the main pipelinesand the secondary battery is facilitated, and higher heat exchange efficiency is obtained; the preset height is smaller than 2 mm; and the width of each main pipeline is smaller than 8 mm; the above reasonable design of the main pipelines of the heat exchange plate, the condition that the main pipeline is too wide or protrudes too high relative to the body is avoided, so that the problems of the plate failure of the heat exchange and the leakage of the heat exchange medium caused by the fact that the main pipelines are easily crushed due to the expansion of the secondary battery are solved, and the use reliability of the heat exchange plate is improved.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a heat exchange plate and a battery module. Background technique [0002] Battery modules are widely used in automobiles and other fields. The battery modules in the prior art are usually integrated with multiple secondary batteries. During the charging and discharging process of the secondary batteries, due to the internal resistance and internal polarization of the battery, there will be Lots of heat. If the heat dissipation is not timely, the heat will accumulate and the temperature of the battery will rise, which will affect the service life and performance of the battery, and even cause thermal runaway and cause dangerous accidents. At the same time, when the ambient temperature is low, the battery needs to be heated to ensure the performance of the battery. [0003] In order to ensure the stability of charging and discharging of the secondary battery, it is necessary to keep the ...

AI Technical Summary

Problems solved by technology

[0004] The soft-pack secondary batteries in the prior art are usually fixed into groups by brackets. The brackets are generally made of plastic and have poor thermal conductivity. Therefore, heat exchange plates are sandwiched between the soft-pack secondary batteries to heat or cool the secondary batteries.

However, the soft-pack secondary battery will expand to a certain extent during use. When the pipe on the heat exchange plate is too wide or the protrusion is too high relative to other parts of the heat exchange plate, it is easy to be crushed by the expanded secondary battery for heat exchange. pipes, leading to failure of the heat exchange plate and leakage of the heat exchange medium

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