CELL LOAD CONTROL CIRCUIT OF BATTERY PACK FOR LITHIUM SECONDARY BATTERY

摘要

A cell load control circuit of the battery pack for the lithium secondary battery is provided to maintain the balancing among the cells by minimizing the load concentrated on the cell positioned at both ends of the battery pack. A plurality of cells(1-7) are serially connected to the controller(10) by serial switches(S1-S8). The cells except for the cell of the first location are connected in parallel with the controller by the input switches(S9-S14). The cells except for the cell of the last location are connected in parallel with the controller by the output switches(S15-S20). The locations of the first cell and the last cell are successively changed in the charge/discharge of the battery pack.