Comprehensive Analysis of Pre-Charge Sequence in Automotive Battery Systems

Murat Kubilay Ozguc, Eymen Ipek, Kadir Aras, Koray Erhan


Electric vehicles (EV) have brought promising technologies for future mobility solutions. As one of the key components of EVs, battery systems have fundamental functions which disconnect the battery during parking and in case of failure. To provide a safe system, specialized high voltage (HV) electromechanical switches are used to perform these major functions such as switch on, switch off or pre-charging. Due to these components can be easily damaged, expensive, heavy and bulky, a solution based on pure semiconductors may be desired to accomplish these operations. Many studies were exhibited on EV battery systems regarding developing solid-state systems for HV switchgear. Developing technology on semiconductor devices allows to make a safety concept based on only solidstate components. This study presents a comprehensive analysis off pre-charge sequences between conventional and semiconductor switchgear to be used in electric vehicle battery systems. Spice simulations are presented to investigate advantages and drawbacks of these systems.


electric vehicles; battery systems; li-ion; precharge; semiconductor

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Siang Fui Tie, Chee Wei Tan “A review of energy sources and energy management system in electric vehicles”, Renewable and Sustainable Energy Reviews, vol. 20, pp 82-102, April 2013.

ZVEI, ”Voltage cases for electric mobility” p. 11-12. Available: upload/Presse und Medien/Publikationen/2014/april/Voltage Classes for Electric Mobility/Voltage Classes for Electric Mobility.pdf [Accessed November 20, 2019].

AVL Trimerics GmbH, High-Performance 800v E-Motor for Automotive Application, Available: [Accessed November 20, 2019].

Friedrichs, P., Buschkuehle, M. (2016). The Future of Power Semiconductors: Rugged and High Performing Silicon Carbide Transistors.

Rößler, Werner. ”When Do We Get the Electronic Battery Switch?.” In Advanced Microsystems for Automotive Applications 2014, pp. 165-177. Springer, Cham, 2014.

Lee, Eun-Ju, Jung-Hoon Ahn, Seung-Min Shin, and Byoung-Kuk Lee. ”Comparative analysis of active inrush current limiter for high-voltage

DC power supply system.” In IEEE Vehicle Power and Propulsion Conference 2012, pp. 1256-1260. IEEE 2012.

Motorola Inc, Applitaction Note AN1542.

Infineon, “650V CoolMos CFDA Power Transistor” IPW65R048CFDA datasheet, Mar. 2012

Tesla Motors. ”Tesla Model S. Palo Alto” Available: DE/models/design, [Accessed 2015].



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