| 摘要 |
PROBLEM TO BE SOLVED: To provide a charger for charging a secondary battery group composed of a plurality of secondary batteries connected in series in which the batteries can be charged quickly up to a fully charged state without causing an undue chemical reaction (oxidation-reduction reaction). SOLUTION: A secondary battery group 2 is charged by a charging voltage supply means 5 with a specified charging voltage value E<SB>p</SB>for a specified time T<SB>1</SB>, and a voltage supply means for applying a voltage to the secondary battery group 2 through a switching means 7 is switched from the charging voltage supply means 5 to a check voltage supplying means 6. When the check voltage supplying means 6 applies a check voltage value E<SB>c</SB>to the secondary battery group 2 for a minute time duration T<SB>2</SB>, a current detecting means 8 detects a current value i flowing through the secondary battery group 2, and the current value i is determined by a current determination means 4c. This operational flow is repeated if the current value i is larger than a charge completion reference current value J, otherwise the charger 3 stops the charging of the secondary battery group 2. COPYRIGHT: (C)2005,JPO&NCIPI
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