吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 1395-1402.doi: 10.13229/j.cnki.jdxbgxb201705010

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Real-time on-line monitoring system for power battery insulation resistance of electric vehicle

ZHANG Xiang-wen, GAO Guan   

  1. School of Electronic Engineering and Automation,Guilin University of Electronic Technology,Guilin 541004,China
  • Received:2016-04-25 Online:2017-09-20 Published:2017-09-20

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Abstract: In order to overcome the disadvantages of current insulation detection method, a new method is designed and realized with four relay switches and four 1% resistances in parallel respectively between positive or negative electrode of the power battery and the chassis; and a simple real-time battery insulation on-line monitoring system is developed. This method can effectively avoid the limitations of the current insulation detection method. The system was tested with SE40AHA lithium iron phosphate battery. The results show that the system can be used to monitor the insulation resistance during the power battery charging and discharging process and the insulation detection precision is within 3%.

Key words: vehicle engineering, power battery, insulation resistance, real-time monitoring, charging and discharging

CLC Number: 

  • U463.63
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