Energy conversion device with integrated active cell balancing
AssigneeEnphase Energy, Inc.
InventorMichael J. HARRISON
Life of this patent
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Abstract
An energy conversion device with an integrated active cell balancing circuit. The energy conversion device comprising a cell balancing circuit adapted to be connected to a plurality of cells of a battery, where the cell balancing circuit forms a DC bridge. A transformer, having a primary winding forming a portion of the cell balancing circuit, couples energy to a secondary winding. The secondary winding forms a portion of a resonant cycloconverter configured to convert the coupled energy to an AC output.
Claims20
An energy conversion device comprising:
- a cell balancing circuit adapted to be connected to a plurality of cells of a battery, where the cell balancing circuit forms a DC bridge;
- a transformer having a primary winding forming a portion of the cell balancing circuit that couples energy to a secondary winding;
- and
- a resonant cycloconverter comprising the secondary winding configured to convert the energy that is coupled from the primary winding to the secondary winding into an AC output.
A method of controlling an energy conversion device, the energy conversion device comprises a plurality of balancing circuits, where each balancing circuit is coupled to a cell of a battery and each balancing circuit is magnetically coupled to a resonant cycloconverter, the method comprising:
- controlling each balancing circuit such that adjacent balancing circuits are alternately activated and deactivated.
Dependencies are inferred from the claim text.