1. Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Jinjiang, China
2. School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, China
3. School of Management, Xi'an Jiaotong University, Xi'an, China
4. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, China
5. AAU Energy, Aalborg University, Aalborg, Denmark