SAFETY AND PERFORMANCE OPTIMIZED CONTROLS FOR LARGE SCALE ELECTRIC VEHICLE BATTERY SYSTEMS
First Claim
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1. An electric vehicle power system, comprising:
- a battery system;
a bus configured to transfer power to a motor drive; and
a control circuit configured to selectively couple the battery to the bus and monitor integrity of the bus, the control circuit;
discharging capacitance of the bus to a chassis in response to a disconnect between the battery and bus; and
measuring impedance across the bus.
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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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Citations
19 Claims
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1. An electric vehicle power system, comprising:
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a battery system; a bus configured to transfer power to a motor drive; and a control circuit configured to selectively couple the battery to the bus and monitor integrity of the bus, the control circuit; discharging capacitance of the bus to a chassis in response to a disconnect between the battery and bus; and measuring impedance across the bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification