【摘 要】
：
The lightweight design of multi-material power battery enclosure for electric vehicle was presented. The sensitivity analy- sis method was used to determine the contribution value of each component to
【机 构】
：
School of Mechanical Engineering, Beijing Institute of Technology;Collaborative Innovation Center of
【出 处】
：
第19届亚太汽车工程年会暨2017中国汽车工程学会年会
论文部分内容阅读
The lightweight design of multi-material power battery enclosure for electric vehicle was presented. The sensitivity analy- sis method was used to determine the contribution value of each component to the optimal target weight and the first order natural frequen- cy. Depending on the sensitivity analysis results and material properties, applying lightweight materials to main components. The CFRP was used for the battery case, and aluminum alloy material for the frame structure. The size of the main bearing structures was opti- mized. The performance indexes under multiple loading cases, such as the strength, stiffness, first order natural frequency and weight of the battery enclosure prototype and the multi-material battery enclosure were compared. The results shown that, on the premise of en- suring the bearing characteristics of the battery enclosure, the battery enclosure achieved the weight loss of 48. 86%, meanwhile the first order natural frequency of it increased to 32. 03Hz.
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