State of Charge (SOC) Estimation of Lithium-ion Battery Based on Adaptive Square Root Unscented Kalman Filter

1 School of Electrical Engineering, Qingdao University, Qingdao, 266071, China 2 Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Shandong, Jinan 250022, China School of Materials Science and Energy Engineering, Foshan University, Foshan, 528231, China E-mail: wkwj888@163.com and ytllw@163.com