Stress monitoring of lithiuim ion cells during cycling to correlate with the electrochemical processes

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Conference Paper

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Higher inner stress than the strength of the shell is one of the main problems for the safety of batteries. In order to improve the safety management of batteries, a non-destructive method has been adopted to real-time monitor the stress level of the NCM batteries during charging/discharging process. Besides, the relationship between strain and stress for the coin cell has been analysed. During cycling process, the stress level has the same trend with the potential value, and residual stress has been found at the end of every cycle. In order to investigate the relationship between the stress accumulation and the electrochemical performance of the cells, the residual stresses and the normalized capacities of NCM cells under different current densities have been monitored.


Smart Materials and Nondestructive Evaluation for Energy Systems IVSmart Materials and Nondestructive Evaluation for Energy Systems IV

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