Systems and methods for balancing battery cells
First Claim
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1. A system comprising:
- a primary winding configured to receive an input power; and
a plurality of secondary windings configured to transform said input power into a plurality of currents to balance a plurality of cells in a battery pack, wherein a ratio between a first turn number of a first secondary winding of said secondary windings and a second turn number of a second secondary winding of said secondary windings is determined by a nominal voltage ratio between two corresponding cells of said plurality of cells.
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Abstract
In a power converter, a primary winding receives an input power. In addition, multiple secondary windings transform the input power into multiple charging currents to charge a set of cells via a set of paths. The multiple secondary windings further balance the set of cells based on the charging currents. A ratio between a first turn number of a first secondary winding of the secondary windings and a second turn number of a second secondary winding of the secondary windings is determined by a nominal voltage ratio between two corresponding cells of the set of cells.
29 Citations
20 Claims
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1. A system comprising:
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a primary winding configured to receive an input power; and a plurality of secondary windings configured to transform said input power into a plurality of currents to balance a plurality of cells in a battery pack, wherein a ratio between a first turn number of a first secondary winding of said secondary windings and a second turn number of a second secondary winding of said secondary windings is determined by a nominal voltage ratio between two corresponding cells of said plurality of cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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receiving an input power at a primary winding; transforming said input power into a plurality of currents using a plurality of secondary windings; balancing a plurality of cells using said currents, wherein a ratio between a first turn number of a first secondary winding of said secondary windings and a second turn number of a second secondary winding of said secondary windings is determined by a nominal voltage ratio between two corresponding cells of said plurality of cells. - View Dependent Claims (10, 11, 12, 13)
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14. A system comprising:
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a plurality of terminals configured to provide a plurality of currents to balance a plurality of cells; and a plurality of secondary windings coupled to said terminals and configured to transform an input power provided by a primary winding into said currents, wherein a ratio between a first turn number of a first secondary winding of said secondary windings and a second turn number of a second secondary winding of said secondary windings is determined by a nominal voltage ratio between two corresponding cells of said plurality of cells. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification