基于CFD和有限元分析的保温型电池箱体设计

Insulation battery pack design based on CFD and finite element analysis

基于电池箱在保温设计时,不可避免的热桥问题,采用玻纤3D织物全覆盖电池箱内部后,织物通过浸润树脂与外部金属框架进行一体固化成型,实验证明能够达到预期的保温效果。以传热学理论为基础,结合计算流体力学(CFD)仿真分析工具对电池箱保温性能进行计算,后期实验证明了理论计算和仿真结果的有效性。采用有限元分析工具对电池箱强度进行校核计算,完全可以满足对挤压和机械冲击的要求。

In order to solve inevitable thermal bridge problem in the process of thermal insulation design in battery pack,the glass fiber 3 D fabric was used to completely cover the inside of the battery pack,and the fabric was integrated with the external metal frame through infiltration resin.The test proves that the expected heat preservation effect can be achieved.Based on the theory of heat transfer,combined with CFD simulation analysis,the insulation performance of the battery pack was calculated.The later experiments prove the validity of theoretical calculation and simulation results.The finite element analysis was used to check the strength of the battery pack.This solution can fully meet the requirements of extrusion and mechanical impact.