| 摘要 |
PROBLEM TO BE SOLVED: To balance a plurality of battery cells in a battery pack. SOLUTION: A cell balancing circuit for balancing the battery cells includes a transformer and a switching controller. The transformer has a primary winding and a secondary winding. The switching controller selects a first cell coupled to the primary winding and select a second cell coupled to the secondary winding. The first cell and the second cell are coupled in series. The first cell has a cell voltage that is higher than the second cell. The cell balancing circuit further includes a controller coupled to the primary winding. The controller controls energy flowing from the first cell to the primary winding so as to transfer the energy from the first cell to the second cell to balance the battery cells. COPYRIGHT: (C)2010,JPO&INPIT |
