关键词: 锂离子电池；电池散热；电动汽车

Abstract: In order to analyze the problem of battery heat dissipation, the serial and parallel heat dissipation methods are compared by using the finite element simulation method. Firstly, the heat generation reasons of lithium battery are analyzed, and its heat generation characteristics are researched. Then, for a certain lithium-ion battery, the finite element simulation software Fluent is used to simulate the serial and parallel air-cooled heat dissipation modes. The results show that the heat dissipation of the battery is relatively uniform during serial ventilation and the battery near the air inlet and outlet has good heat dissipation effect. In parallel ventilation and heat dissipation, the heat dissipation effect increases gradually, and it is better when the battery is close to the outlet.

Key words: Lithium-ion battery; Battery cooling; Electric vehicle