Battery management system (BMS) takes a key role in battery health management and life extension of electric vehicles. It contains various analogue-digital hybrid circuits above the frequency range of several hundred mega-Hertz, where the signal integrity and system stability are probably affected by certain issues of circuit design. In this report, the signal reflections along the transmission lines in a BMS are theoretically simulated and analyzed. The performance of the system is compared to that after optimization both in theory and measurement. The simulation and experimental results verify that electrical impedance matching is most crucial to the signal integrity and system stability in the system design.
Volume Subject Area:
Design, Control, and Manufacture of Electrified Vehicles
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Copyright © 2012 by ASME
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