Lithium ion battery module and heat dissipation method thereof

Abstract

The embodiment of the invention provides a lithium ion battery module and a heat dissipation method thereof, and the lithium ion battery module comprises a plurality of lithium ion batteries, and further comprises a preset number of heat pipes and an air-cooled radiator. The heat pipe is pressed on a tab busbar of the lithium ion battery, a heat conduction silica gel pad is arranged between the heat pipe and the tab busbar of the lithium ion battery, and a phase change material gasified by heating is arranged in the heat pipe. The air cooling radiators and the heat pipes are arranged in a one-to-one correspondence mode and used for dissipating heat of the gasified phase-change material. According to a lithium ion battery module and a heat dissipation method thereof, through pressing a heatpipe with a built-in phase change material on a tab busbar, the heat pipes are connected with the air-cooled radiator, tab heat dissipation, air-cooled heat dissipation and heat pipe technologies areintegrated, the advantages of different heat dissipation modes are fused, it is ensured that the lithium ion battery module works in a comfortable and safe temperature interval, the consistency of the temperature between batteries is ensured, and meanwhile the phenomenon that tabs are locally overheated does not occur.

Description

technical field [0001] The invention relates to the technical field of battery heat dissipation, in particular to a lithium-ion battery module and a heat dissipation method thereof. Background technique [0002] With the advancement of lithium-ion battery technology, lithium-ion batteries are more and more widely used in electric vehicles such as electric vehicles, pure electric buses, trams and trolleybuses. At the same time, lithium-ion battery safety accidents caused by thermal abuse are also appear frequently. Therefore, the heat dissipation design of lithium-ion batteries has become a hot issue in engineering applications. [0003] At present, different manufacturers and research institutions at home and abroad have proposed various methods for the heat dissipation design of lithium-ion battery modules for electric vehicles, but the heat dissipation design of lithium-ion battery modules used in high-power applications such as rail transit There is less research. In h...

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Problems solved by technology

[0003] At present, different manufacturers and research institutions at home and abroad have proposed various methods for the heat dissipation design of lithium-ion battery modules for electric vehicles, but the heat dissipation design of lithium-ion battery modules used in high-power applications such as rail transit less research

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