纯电动轻卡电池包支架强度分析及其改进

Strength Analysis and Improvement of a Battery Pack Bracket of Electric Light truck

为了校核某纯电动轻卡电池包支架是否满足设计要求,对其典型的三种工况进行有限元强度分析,分析结果表明其在工况一和工况二时的最大应力小于其材料屈服强度,但是在工况三时的应力超过材料许用应力。通过在电池包支架上增加两根纵梁,改进之后其在三种工况下的最大应力为分别下降了8.9%、6.3%和14.5%,均低于其材料屈服,满足设计要求。

Aiming at verifing a battery pack bracket of electric light truck whether meet the design requirements,it was strength analysised with three typical working conditions,the analysised result showed that the maximum stress was less than the yield strength of the material in the first working condition and second working condition,the maximum stress exceeded the allowable stress of the material in third working condition.It was improved by adding two longitudinal beams,the maximum stress decreased11.7%,10%and14.5%after improvement,they were less than material yield,so it could meet design requirements.