Low charge acceptance mitigation
First Claim
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1. A vehicle comprising:
- a battery; and
a controller programmed to,in response to charge acceptance of the battery falling below a predetermined sulfation value, set a bus voltage threshold such that during a next charging event a voltage of the battery achieves a desulfation value, andin response to the charge acceptance exceeding the predetermined sulfation value during the event, lower the threshold such that the voltage of the battery falls below the desulfation value.
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Abstract
A vehicle may include a battery and a controller programmed to set a bus voltage threshold such that during a next charging event a voltage of the battery achieves a desulfation value. The controller may set the bus voltage threshold in response to charge acceptance of the battery falling below a predetermined sulfation value. The controller may be programmed to lower the threshold such that the voltage of the battery falls below the desulfation value. The controller may lower the threshold in response to the charge acceptance exceeding the predetermined sulfation value during the event.
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Citations
17 Claims
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1. A vehicle comprising:
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a battery; and a controller programmed to, in response to charge acceptance of the battery falling below a predetermined sulfation value, set a bus voltage threshold such that during a next charging event a voltage of the battery achieves a desulfation value, and in response to the charge acceptance exceeding the predetermined sulfation value during the event, lower the threshold such that the voltage of the battery falls below the desulfation value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle comprising:
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a battery; and a controller programmed to, in response to charge acceptance of the battery falling below a predetermined stratification value, set a bus voltage threshold such that during a next charging event a voltage of the battery achieves a destratification value, and in response to the charge acceptance exceeding the predetermined stratification value during the event, lower the threshold such that the voltage of the battery falls below the destratification value. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A vehicle comprising:
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an electric machine; a battery electrically connected to the electric machine; and a controller programmed to, in response to indication of a charge acceptance of the battery falling below a first predetermined value indicative of sulfation, raise a bus voltage associated with the vehicle battery to a sulfation threshold during a charging event until the battery charge acceptance rises above the first predetermined value, and programmed to, in response to indication of the charge acceptance falling below a second predetermined value indicative of stratification, raise the bus voltage associated with the vehicle battery to a stratification threshold during the charging event until the battery charge acceptance rises above the second predetermined value. - View Dependent Claims (15, 16, 17)
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Specification