机电工程技术2023，Vol.52Issue(12)：257-259,263,4.DOI:10.3969/j.issn.1009-9492.2023.12.060
锂离子动力电池复合底护板球击防护试验研究
Experimental Study on Ball Impact Protection of Lithium Ion Power Battery Composite Bottom Guard
摘要
Abstract
The rapid development of new energy vehicles using lithium-ion power batteries as energy carriers is changing the landscape of the automotive industry and affecting people's lives.However,the frequent occurrence of safety issues related to new energy vehicles is closely related to the safety of people's property,and has increasingly attracted vast attention.The impact of the bottom of the lithium-ion battery pack is the main reason for the thermal runaway of the battery pack,which in turn causes fires and explosions of new energy vehicles.In order to improve the bottom protection ability of the power battery pack,a honeycomb panel composite material commonly used in car bodies and exterior components is proposed to design as a battery pack bottom protection plate,and using structural adhesive to bond the honeycomb panel and the bottom of the battery pack box as a whole is creatively proposed.The experimental method is designed,a ball impact test platform is built,and two different adhesive strength structural adhesives are selected,using ball impact experiments to study the impact resistance of bottom protective panels and the influence of different structural adhesive bonding strengths on bottom ball impact protection.The experiments show that honeycomb panel composite material has good energy absorption and impact resistance,and has good protection for the bottom of the battery pack.Under the condition that the size of the honeycomb core remains unchanged,the ball impact protection ability of the honeycomb panel increases with the thickness of the surface material layer.The composite bottom protection board using high-strength structural adhesive has a deformation of only 6 mm at 120 J ball impact.The stronger the bonding strength of the structural adhesive,the better the ball impact protection ability of the bottom protective plate.关键词
蜂窝板/结构胶/底部球击防护/锂离子电池/新能源汽车Key words
honeycomb board/structural adhesive/bottom ball impact protection/lithium ion battery/new energy vehicle分类
机械制造引用本文复制引用
黄红光,王清泉,曾勇..锂离子动力电池复合底护板球击防护试验研究[J].机电工程技术,2023,52(12):257-259,263,4.基金项目
广州市科技计划项目(202103040001) （202103040001）
