Battery Charge Strategy Using Discharge Cycle
First Claim
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1. A battery management system comprising:
- at least one controller programmed to charge a battery at a predetermined charge rate and, in response to a terminal voltage of the battery exceeding a predetermined voltage limit that results in a reduced charge rate, to discharge the battery for a predetermined time and resume charging after the predetermined time at the predetermined charge rate to reduce battery charge time.
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Abstract
A battery management system for a vehicle includes a controller programmed to charge a battery at a predetermined charge rate. The controller discharges the battery for a predetermined time in response to a terminal voltage of the battery exceeding a predetermined voltage limit that results in a reduced charge rate. After discharging for the predetermined time, the controller resumes charging at the predetermined charge rate. A current magnitude during the discharge and the predetermined time may be based on factors including the predetermined charge rate, a battery temperature, and a charge current magnitude during charging.
20 Citations
20 Claims
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1. A battery management system comprising:
at least one controller programmed to charge a battery at a predetermined charge rate and, in response to a terminal voltage of the battery exceeding a predetermined voltage limit that results in a reduced charge rate, to discharge the battery for a predetermined time and resume charging after the predetermined time at the predetermined charge rate to reduce battery charge time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle comprising:
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a battery; and at least one controller programmed to charge the battery at a predetermined charge rate and, in response to a terminal voltage of the battery exceeding a predetermined voltage limit that results in a reduced charge rate, to discharge the battery for a predetermined time and resume charging after the predetermined time at the predetermined charge rate to reduce battery charge time. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method comprising:
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charging a battery at a predetermined charge rate; discharging the battery for a predetermined time in response to a terminal voltage of the battery exceeding a predetermined voltage limit that results in a charge rate less than the predetermined charge rate; and resuming charging the battery after the predetermined time at the predetermined charge rate to reduce a battery charge time. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification