Title: Charging method, charging circuit, and charging device
Application Number: 200610148547 Application Date: 2006.11.16
Publication Number: 1979997 Publication Date: 2007.06.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02J7/02;H01M10/44
Applicant(s) Name: Matsushita Electric Works Ltd. Address:
Inventor(s) Name: Ohashi Toshiharu;Sakaue Masaaki;Ito Masatoshi
Attorney & Agent: shaoya li lixiao shu
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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