Measuring bulge caused by leakage of battery gas with flexible sensor

The leakage of battery gas under the shell will cause the deformation of the battery shell. The main causes of automobile battery bulging are overcharge and circuit failure. In order to monitor the deformation of the core shell in real time, flexible sensors with large deformation can be attached to the outer surface of the core. The deformation of flexible sensor in the bulging effect is analyzed by establishing a numerical calculation model. It is found that with the increase of leakage, the pressure of bulging gas increases continuously, resulting in the continuous bulging of the shell surface. When factors such as sliding contact are introduced, the device produces non-uniform deformation with a peakof14147με. The numerical simulation method is used to verify the rationality and effectiveness of the sensor made of flexible electronic devices.