DIAGNOSTIC METHOD FOR CONTACTOR RESISTANCE FAILURE
First Claim
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1. A diagnostic method for indicating a contactor fault in an electric vehicle, comprising:
- indicating a faulted status if an estimated electrical contact surface resistance of at least one contactor is above a predetermined value.
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Abstract
A diagnostic method for contact resistance failure includes estimating electrical contact surface resistance of at least one contactor, determining a faulted status of the at least one contactor and indicating the faulted status of the at least one contactor if the at least one contactor is in the faulted status.
15 Citations
20 Claims
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1. A diagnostic method for indicating a contactor fault in an electric vehicle, comprising:
indicating a faulted status if an estimated electrical contact surface resistance of at least one contactor is above a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A diagnostic method for contact resistance failure, comprising:
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estimating electrical contact surface resistance of a main positive contactor and a main negative contactor interfacing with a high voltage battery pack and a battery energy electric control module; determining a faulted status of at least one of the main positive contactor and the main negative contactor; and indicating the faulted status of at least one of the main positive contactor and the main negative contactor if the at least one of the main positive contactor and the main negative contactor is in the faulted status. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A diagnostic method for contact resistance failure, comprising:
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estimating electrical contact surface resistance of a main positive contactor and a main negative contactor interfacing with a high voltage battery pack and a controller; determining a faulted status of at least one of the main positive contactor and the main negative contactor; and if the at least one of the main positive contactor and the main negative contactor is in the faulted status, indicating the faulted status of at least one of the main positive contactor and the main negative contactor by illuminating a lamp. - View Dependent Claims (18, 19, 20)
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Specification