Simulation analysis of air cooling for vehicle power battery

Because of its high voltage, strong storage and circulation ability, no memory effect, high safety, low environmental pollution, Lithium ion batteries are the most widely used as power battery in the electric cars, but its heat dissipation problem can not be ignored. When the power battery is working, the heat is accumulated. If it cannot be discharged in time, it will seriously affect the normal operation of the battery and even cause danger. As a heat dissipation medium, air can give good consideration to heat dissipation effect and cost. In this paper, CFD software was used to simulate the flow field of the power battery when working. Specific research method of this article is that the heating characteristics of lithium ion battery are studied, by studying thermal field distribution of the battery pack, and the battery pack is optimized to improve. Finally the temperature of the battery pack was kept a reasonable range.