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扩散应力诱导的锂离子电池失效机理研究进展
王亚楠1,2,3(),李华1,2,3,王正坤1,厉青峰1,练晨1,何鑫1
Progress on Failure Mechanism of Lithium Ion Battery Caused by Diffusion Induced Stress
WANG Yanan1,2,3(),LI Hua1,2,3,WANG Zhengkun1,LI Qingfeng1,LIAN Chen1,HE Xin1

图19. (a)外部约束和EIS测试的实验原理[94]; (b)不同外部压力下阻抗随循环次数的变化[95]; (c)外部约束对电池循环寿命的影响, 蓝色、绿色、黄色和红色线条分别代表0, 0.05, 0.5和5 MPa的外部约束[96]; (d)健康状态(State of Health, SOH)随循环次数的变化, 蓝色、红色、黄色和紫色线条分别代表无外部约束, 恒定厚度约束, 弹性元件约束和恒力弹簧约束[97]

Fig. 19. (a) Experimental schematic diagram of the external constraint and EIS test[94]; (b) Impedance as a function of cycle times at different external pressures[95]; (c) Effect of external constraints on cycle lifetime of the cell, of which blue, green, yellow and red lines representing external constraints of 0, 0.05, 0.5 and 5 MPa, respectively[96]; (d) SOH as a function of cycle times, of which blue, red, yellow, and purple lines representing no external constraint, constant thickness constraint, elastic element constraint, and constant force spring constraint, respectively[97]