| Title |
A Method of Reducing a Tolerance of a Shunt Resistor for Balance of the Battery Cell to Improve a Precision of BMS |
| Authors |
김은민(Eun-Min Kim) ; 손미라(Mi-Ra Son) ; 강창룡(Chang-Yong Kang) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.8.1055 |
| Keywords |
Fixed resistor ; Shunt ; Temperature Coefficient of Resistance(T.C.R) ; Thermo electro motive force(thermal EMF) ; Battery Management system(BMS) |
| 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. |