Study on the SOC estimation method for Lithium power battery based on tomographic images

Due to the common SOC estimation methods cannot accurately estimate the SOC of the battery in real time, it results in inaccurate SOC estimation. Therefore, the SOC estimation method for lithium power battery based on tomography images is proposed, it can be used to obtain tomographic images that reflect the structural morphology parameters density, area and thickness of the cathode and anode electrodes active materials in real time. Finally, a prediction model for the SOC with pixels of cathode and anode electrodes active materials is established. The result shows that the SOC can be calculated by the structural morphological parameters of the battery in real time, and the estimation results are more accurate and reliable. (paper)