Bidirectional DC Converter-based Battery Simulator
First Claim
1. A system, comprising:
- a battery control module (BCM) configured to monitor charge of one or more cells of an electrified vehicle (EV) traction battery; and
a simulator, configured for bidirectional energy exchange with said BCM, configured to simulate operation of said traction battery.
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Accused Products
Abstract
A battery simulator is configured to provide large energy pulses for hot plug testing while maintaining the ability to quickly respond during random order testing. A simulator can comprise a plurality of cell simulators “cellsims” coupled to a DC power supply. Each cellsim can include a bidirectional DC converter, a bulk capacitor on the primary side of the converter, and a switchable discharge capacitor on the secondary side of the converter. The bidirectional DC converter enables the simulator to cooperate with a battery control module (BCM) to perform active cell balancing. Energy received from the BCM can be stored at the bulk capacitor. The discharge capacitor can be coupled to an output link to provide a high energy pulse to the BCM to simulate hot plug conditions, and can be decoupled from the link during random order testing. Output link voltage and current can be monitored for fault detection.
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Citations
20 Claims
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1. A system, comprising:
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a battery control module (BCM) configured to monitor charge of one or more cells of an electrified vehicle (EV) traction battery; and a simulator, configured for bidirectional energy exchange with said BCM, configured to simulate operation of said traction battery. - View Dependent Claims (2, 3, 4, 5)
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6. A battery simulator, comprising:
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a power supply; one or more cell simulators (cellsims) coupled to said power supply, each said cellsim configured to simulate a cell of an electrified vehicle (EV) traction battery; and wherein at least one of said cellsims is configured for bidirectional energy exchange with a battery control module (BCM) configured to monitor said traction battery charge. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A battery simulator, comprising:
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a power supply; and at least one cell simulator (cellsim), said cellsim configured to simulate an energy cell of an electrified vehicle (EV) traction battery, said cellsim comprising a discharge capacitor switchably controlled to provide energy to a battery control module (BCM) for said traction battery. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification