Fdk Corporation

Michiko Sato

Kenji Kitamura

Takeshi Yoshida

Yasunari Mizoguchi

Takashi Kanou

This chargeris provided with: a battery housing unitincluding a first contact Tand a second contact Twhich touch the respective electrode terminals of a battery BAT to be housed therein; a high-potential power supply lineand a low-potential power supply lineto which power for charging the battery BAT is supplied; a connection switching circuitcapable of switching between a first connection state in which the first contact Tis connected to the high-potential power supply lineand the second contact Tis connected to the low-potential power supply lineand a second connection state in which the second contact Tis connected to the high-potential power supply lineand the first contact Tis connected to the low-potential power supply line; and a control devicefor controlling the connection switching circuitto perform charging control on the battery BAT. The control deviceperforms preliminary charging on the battery BAT in the first connection state and, when a battery voltage VB does not exceed a set voltage VS, switches the connection state to the second connection state and performs preliminary and normal charging on the battery BAT.

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Tokyo, Japan

Michiko Sato