| 摘要 |
PROBLEM TO BE SOLVED: To provide a charge control method for a secondary battery of an AC/DC cleaner which does not require a time for charging the secondary battery, avoiding troublesomeness. SOLUTION: The method is constituted of loads 20A and 20B for setting charging currents of a commercial power source, a secondary battery 6, and switching elements 21A and 21B for load connected in series for controlling currents supplied to the secondary battery 6 through the loads 20A and 20B for setting the charge currents. As the secondary battery can be charged during use of alternating current by providing a motor-driven blower control circuit 4 for terminating charging by detecting the battery temperature of the secondary battery 6, such a troublesomeness that the user has to wait for hours for charging the secondary battery can be solved. COPYRIGHT: (C)2004,JPO
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