AUTONOMOUS BATTERY CONTROL AND OPTIMIZATION
First Claim
1. An apparatus comprising:
- a battery state module that determines a battery state of each battery cell of a plurality of battery cells forming a battery unit, a battery state of a battery cell comprising a health of the battery cell, wherein a battery state of at least one battery cell of the battery unit differs from a battery state of one or more other battery cells of the battery unit, each battery cell is connected to a shared bus through a bypass converter, each bypass converter providing power from the battery cell to the shared bus;
a charge/discharge modification module that determines, based on the determined battery state of each battery cell of the battery unit, an amount to vary a charging characteristic for each battery cell of the battery unit with respect to a reference charging characteristic, wherein the charging characteristic for each battery cell varies as a function of a reference state; and
a charge/discharge module that adjusts charging and discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell.
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Abstract
An apparatus includes a battery state module that determines a battery state of each of a plurality of battery cells forming a battery unit. A battery state includes a health of the battery cell. A battery state of a battery cell differs from a battery state of other battery cells of the battery unit. Each battery cell is connected to a shared bus through a bypass converter that provides power from the battery cell to the shared bus. A charge/discharge modification module determines, based on battery state, an amount to vary a charging characteristic for each battery cell compared to a reference charging characteristic. Each charging characteristic varies as a function of a reference state. A charge/discharge module adjusts charging/discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell.
43 Citations
32 Claims
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1. An apparatus comprising:
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a battery state module that determines a battery state of each battery cell of a plurality of battery cells forming a battery unit, a battery state of a battery cell comprising a health of the battery cell, wherein a battery state of at least one battery cell of the battery unit differs from a battery state of one or more other battery cells of the battery unit, each battery cell is connected to a shared bus through a bypass converter, each bypass converter providing power from the battery cell to the shared bus; a charge/discharge modification module that determines, based on the determined battery state of each battery cell of the battery unit, an amount to vary a charging characteristic for each battery cell of the battery unit with respect to a reference charging characteristic, wherein the charging characteristic for each battery cell varies as a function of a reference state; and a charge/discharge module that adjusts charging and discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method comprising:
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determining a battery state of each battery cell of a plurality of battery cells forming a battery unit, a battery state of a battery cell comprising a health of the battery cell, wherein a battery state of at least one battery cell of the battery unit differs from a battery state of one or more other battery cells of the battery unit, each battery cell is connected to a shared bus through a bypass converter, each bypass converter providing power from the battery cell to the shared bus; determining, based on the determined battery state of each battery cell of the battery unit, an amount to vary a charging characteristic for each battery cell of the battery unit with respect to a reference charging characteristic, wherein the charging characteristic for each battery cell varies as a function of a reference state; and adjusting charging and discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A system comprising:
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a plurality of direct current (“
DC”
) to DC bypass converters, each bypass converter connected to a battery cell of a plurality of battery cells forming a battery unit, and to a shared bus, the battery unit providing power to a load, each bypass converter providing power from the battery cell to a shared bus;a battery state module that determines a battery state of each battery cell of the battery unit, a battery state of a battery cell comprising a health of the battery cell, wherein a battery state of at least one battery cell of the battery unit differs from a battery state of one or more other battery cells of the battery unit; a charge/discharge modification module that determines, based on the determined battery state of each battery cell of the battery unit, an amount to vary a charging characteristic for each battery cell of the battery unit with respect to a reference charging characteristic, wherein the charging characteristic for each battery cell varies as a function of a reference state; and a charge/discharge module that adjusts charging and discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell. - View Dependent Claims (32)
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Specification