Battery pack
First Claim
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1. An apparatus, comprising:
- a first cell subpack including a plurality of cells arranged in series; and
a second cell subpack connected in series to the first cell subpack, the second cell subpack including a plurality of cells arranged in series and at least one cell arranged in parallel with one of the plurality of cells, arranged in series, of the second cell subpack, wherein the first cell subpack and the second cell subpack use a first voltage rail to provide at least a first voltage level and a second voltage rail to provide a second voltage level, wherein the first voltage level is different from the second voltage level, and wherein the first voltage level is matched to an expected first load voltage level and the second voltage level is matched to an expected second load voltage level.
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Abstract
An apparatus includes a first cell subpack having a plurality of cells arranged in series and a second cell subpack connected in series to the first cell subpack. The second cell subpack includes a plurality of cells arranged in series and at least one cell arranged in parallel with one of the plurality of cells, arranged in series, of the second cell subpack, where the first cell subpack and the second cell subpack use a first voltage rail to provide at least a first voltage level and a second voltage rail to provide a second voltage level, where the first voltage level is different from the second voltage level.
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Citations
19 Claims
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1. An apparatus, comprising:
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a first cell subpack including a plurality of cells arranged in series; and a second cell subpack connected in series to the first cell subpack, the second cell subpack including a plurality of cells arranged in series and at least one cell arranged in parallel with one of the plurality of cells, arranged in series, of the second cell subpack, wherein the first cell subpack and the second cell subpack use a first voltage rail to provide at least a first voltage level and a second voltage rail to provide a second voltage level, wherein the first voltage level is different from the second voltage level, and wherein the first voltage level is matched to an expected first load voltage level and the second voltage level is matched to an expected second load voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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multiple cells arranged in series, the multiple cells configured to provide a first voltage level to a first load through a first voltage rail; a voltage regulator connected to the first voltage rail, wherein the voltage regulator is charged by the multiple cells in series; and at least one lithium ion cell connected to an output of the voltage regulator, the lithium ion cell having a battery chemistry different from the multiple cells arranged in series, wherein the voltage regulator is configured to charge the lithium ion cell. - View Dependent Claims (14, 15, 16)
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17. An apparatus, comprising:
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a first cell subpack comprising multiple matched cells in series to provide a first voltage level; and a second cell subpack connected in series to the first cell subpack, the second cell subpack comprising multiple unmatched cells in parallel to provide a second voltage level, wherein the first voltage level is different from the second voltage level and the unmatched cells in parallel have a same cell chemistry. - View Dependent Claims (18, 19)
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Specification