SAFETY AND PERFORMANCE OPTIMIZED CONTROLS FOR LARGE SCALE ELECTRIC VEHICLE BATTERY SYSTEMS
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United States of America Patent
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N/A
Issued Date -
Mar 3, 2011
app pub date -
Aug 31, 2010
filing date -
Sep 1, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electric vehicle power system including a battery system, a bus configured to transfer power to a motor drive, and a control circuit to selectively couple the battery to the bus. The control circuit is discharges capacitance of the bus to a chassis in response to a disconnect between the battery and the bus. Further, the control circuit measures impedance across the bus. As a result, the control circuit can monitor integrity of the bus and detect a fault, such as a short circuit or degraded bus insulation.
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