Int J Performability Eng ›› 2020, Vol. 16 ›› Issue (4): 560-568.doi: 10.23940/ijpe.20.04.p7.560568

• Orginal Article • Previous Articles     Next Articles

Insulation Resistance Measurement of Voltage Leakage System for EV Battery Pack

Rui Yanga,*, Yanzhou Suna, Han Wua, and Xiaolin Zhangb   

  1. aSchool of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, 454150, China
    bShanghai Zhiyun New Energy Technology Limited Company, Shanghai, 200000, China
  • Submitted on ; Revised on ; Accepted on
  • Contact: Yang Rui
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No. U120450).


To solve the problem of insulation fault in battery packs in the application of pure electric vehicles, a method of measuring the insulation resistance and the location of the fault is studied. Based on the traditional insulation algorithm, this method makes some improvements. First, this paper builds a system model of insulation resistance. Secondly, the system model is verified by simulation software. Finally, an experimental prototype with designed parameters is built to verify the theoretical derivation and simulation results. The experimental results show that the system can monitor the insulation resistance value at the internal fault location of the battery pack and the corresponding ground short-circuit fault location in a short period of time while ensuring more efficient insulation detection function.

Key words: pure electric vehicle, voltage leakage, insulation detection, fault location