Balancing System for a 6-Cell-Lithium-Ion Battery Module Including Protection, Display, and Control Equipment

Zhi Tian

Research output: ThesisMaster's Thesis

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Abstract

The task of this master thesis is to realize a continuously operating passive balancing system for 6 cells in series including cell condition monitoring and protection circuits. For this system, sensors for voltage and temperature measurement are chosen and installed, protection measures (over-temperature, overvoltage) are installed as well a control input for remote turn-off of the balancer. Distributed power supplies are established and operating status of the entire system is displayed. Finally, the entire system is assembled, commissioned, and tested in laboratory. Voltage equalization for battery pack is evaluated. The balancing system loads cells that exhibit a cell voltage being 0.05 Volts or more over average cell voltage by a moderate current until the overvoltage falls under a defined threshold.
Translated title of the contributionBalancing-System für ein 6-Zellen-Lithium-Ionen-Batteriemodul mit Schutz-, Anzeige- und Steuereinrichtungen
Original languageEnglish
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Weiß, Helmut, Supervisor (internal)
  • Krall, Rudolf, Co-Supervisor (internal)
Award date4 Apr 2014
Publication statusPublished - 2014

Bibliographical note

embargoed until null

Keywords

  • Lithium-Ion Battery
  • Batterymanagement
  • Measurements
  • Protection
  • Balancing system

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