发明名称 |
CHARGING CIRCUIT FOR SECONDARY BATTERY |
摘要 |
A charging circuit for a secondary battery includes a constant-voltage circuit part outputting one of a plurality of predetermined constant voltages and charges the secondary battery by applying the constant voltage thereto, a detection circuit part detecting a battery voltage of the secondary battery, and a control circuit part controlling the selection of the constant-voltage in response to the detected battery voltage. Another charging circuit includes a constant-current circuit part outputting, to the secondary battery, one of two predetermined constant currents, a constant-voltage circuit part charging the secondary battery by applying a predetermined constant voltage thereto, a battery voltage detection circuit part detecting a battery voltage of the secondary battery, a charge current detection circuit part outputting a predetermined charge completion signal, and a charge control circuit part stopping operations of the constant-current circuit part and constant-voltage circuit part when receiving the charge completion signal.
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申请公布号 |
WO03026095(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
WO2002JP09362 |
申请日期 |
2002.09.12 |
申请人 |
RICOH COMPANY, LTD.;NISHIDA, JUNJI;MANABE, SHINYA |
发明人 |
NISHIDA, JUNJI;MANABE, SHINYA |
分类号 |
H02J7/00;H02J7/08;(IPC1-7):H02J7/10 |
主分类号 |
H02J7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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