Battery Management System for 24-V Battery-Powered Electric Wheelchair

  • Tzu-Hsiang Tseng National Changhua University of Education
  • Liang-Rui Chen National Changhua University of Education
  • Yu-Jia Zhang National Changhua University of Education
  • Bo-Rui Xu National Changhua University of Education
  • Jin-An Li National Changhua University of Education
Keywords: battery management system (BMS), digital signal processor, battery balance, battery protection


This paper describes a simplified battery-management system using a digital signal processor for a 24-V battery-powered electric wheelchair to modulate and protect the battery from operating outside its safe operating area, such as over-temperature, under-temperature, over-voltage, under-voltage, over-current discharge, or over-current charging. Using the buck-boost circuit topology, we achieved and demonstrated both battery balance and protection in a prototype 12-V/40-Ah series-connected two-battery module. Simulation results show that the proposed battery management system is feasible for a 24-V battery-powered electric wheelchair application.


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