Current leakage detection in high voltage battery pack

摘要

A method of detecting leakage currents in a high voltage battery pack system reduces detection error caused by fluctuations in battery pack voltage during the detection process. The voltages of the individual modules forming the battery pack are separately and simultaneously measured during each measurement of leakage current on the high and low sides of the leakage point. Measurements of individual module voltages are combined with the simultaneous current leakage measurements to calculate leak resistance.