摘要
以铝塑膜为壳体材料的软包装锂离子电池为例,基于锂离子电池内部化学反应生成气体的研究,提出了一种根据锂离子电池壳体形变判断电池内部产生的气体量是否合理的新方法。该方法通过模拟电池壳体在内部压强变化而引起的形变,建立壳体形变与压强的关系方程;分析电池壳体体积变化,得到电池化成后壳体内部气体量的值与壳体形变的关系。该方法可用于测量电池壳体平面在某一方向上的形变量最大值,以达到快速的判断电池产生的气体量,筛选出气体产生量较大的电池。
Taking flexible packaging of lithium-ion battery as an example, a new method was presented, based on the study of the internal chemical reaction in the lithium-ion battery to judge whether the amount of gas inside the shell is reasonable or not accord to deformation of battery shell. Equation of shell deformation and pressure relationship was established through simulating deformation of battery shell caused by internal pressure changes. The volume change of battery shell was analyzed, and the relationship of the shell deformation and volume of gas were got. The maximum deformation of battery shell on a certain direction could be measured. The amount of gas generated in battery could be judged rapidly. Then the battery which produces maximum amount of gas could be filtered.
出处
《电源技术》
CAS
CSCD
北大核心
2014年第1期40-43,共4页
Chinese Journal of Power Sources
关键词
软包装锂离子电池
内部压强
外壳形变
气体量
flexible packaging lithium-ion battery
internal pressure
shell deformation
gas volume
