The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Method of Reducing a Tolerance of a Shunt Resistor for Balance of the Battery Cell to Improve a Precision of BMS

BMS 정밀도 향상을 위한 셀 밸런싱용 션트 고정저항의 허용오차 저감 방법

  • Kim, Eun-Min (Seoul National University Electric Power Research Institute) ;
  • Son, Mi-Ra (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Kang, Chang-Yong (Dept. of Metallurgical Engineering, Pukyong National University)
  • Received : 2018.05.02
  • Accepted : 2018.07.26
  • Published : 2018.08.01
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Abstract

Recently, due to the rapid development of electric vehicle and energy storage system, it is emphasized for battery management system to be needed and to be improved. BMS carries out various movement for optimization the use of the energy and safe use of secondary battery, these movement of BMS start at high wattage shunt fixed resistor which performs a function for detecting current among the BMS components. In addition, for the safe operation of secondary battery, the reliability of current voltage variation detected from shunt should be secured, and for corresponding characteristics, the quality of Temperature coefficient of resistance for BMS shunt and the quality of Thermo electromotive force all must be excellent. For these reasons, this study comes up with the stabilization plan for thermo electromotive force and temperature coefficient of resistance of BMS shunt resistor which is key to secondary battery operation.

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References

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