CHARGING METHOD, CHARGING CIRCUIT, AND CHARGING DEVICE
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United States of America Patent
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Issued Date -
May 17, 2007
app pub date -
Nov 14, 2006
filing date -
Nov 17, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
When charging of a secondary battery is started, a power source section for supplying an electric current for charging the secondary battery gradually increases the supply amount of the current. If the charging current has reached a predetermined first threshold current, the power source section is operative to set the supply amount of the current to a predetermined constant current for a constant current charging. If a terminal voltage of the secondary battery has reached a predetermined threshold voltage, the power source section is operative to supply a predetermined voltage for a constant voltage charging to the secondary battery.
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