Shindengen Electric Manufacturing Company Limited

Hiroshi Jo

Kazuyuki Sashida

To provide a cell balance circuit and a cell balance apparatus with a low cost and with a compact size, and configured to equalize the charge voltages of rechargeable batteries when the rechargeable batteries are charged or discharged, while suppressing deterioration of the rechargeable batteries. A cell balance circuit AA includes a transformer T, a switch SWarranged so as to form a set with a rechargeable battery BT, and a switch SWarranged so as to form a set with a rechargeable battery BT. The transformer T includes a primary winding Wa arranged so as to form a set with the rechargeable battery BT, and a secondary winding Wb arranged so as to form a set with the rechargeable battery BT. When the rechargeable batteries BTand BTare charged or discharged, the cell balance circuit AA synchronously controls the switches SWand SW

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Saitama, Japan

Hiroshi Jo