Charging circuit, method of controlling operation of...

Details Charging circuit, method of controlling operation of... Charging circuit, method of controlling operation of...

2011-04-19

2011-04-19

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Wind, solar, thermal, or fuel-cell source

C320S137000, C320S138000, C320S160000, C320S161000, C320S162000

Reexamination Certificate

active

07928687

ABSTRACT:
A charging current for a secondary battery is reduced when the secondary battery voltage gets close to a previously set constant voltage. When the charging current has become less than a charging completion current value as a reference for determining whether the charging has been completed, a charging control sequence circuit determines that the charging of the secondary battery has been completed and proceeds to a first flow consumption current mode. The charging control sequence circuit turns off a first switch to cut off an electrical connection to stop the operation of the charging control circuit, whereby a switching element and a switching element for synchronous rectification are turned off to cut-off electrical connections so that the charging current becomes 0 mA.

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Machine translation of the JP office action.

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