Open AccessAn insulation diagnosis method for battery pack based on battery model
Author(s) -
Yanhui Zhang,
Qingpeng Chen,
Xiao Liu,
Zhile Yang,
Shifeng Guo,
Wei Feng
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/793/1/012061
Subject(s) - automotive engineering , chassis , battery (electricity) , battery pack , electronic control unit , engineering , voltage , electrical engineering , computer science , mechanical engineering , power (physics) , physics , quantum mechanics
The collision and components aging of electric vehicles may lead to dramatic decrease of insulation performance in the complex application environment, which will reduce the insulation between battery pack and chassis, and will affect the performance of on-board equipment and electronic control unit, resulting in heat accumulation effect of leakage circuit and even vehicle fire. Therefore, it is critical to develop a real-time, accurate and reliable detection device to monitor the insulation resistance of the high-voltage system of electric vehicles, which is beneficial to the normal operation of electrical equipment, the safe operation of vehicles and the personal safety of passengers. In this work, an online estimation method of insulation resistance based on battery model is proposed.