| 摘要 |
PROBLEM TO BE SOLVED: To prevent the temperature rise of a conductor, even if the conductor repeats the short-circuit and release between the positive terminal 2 and the negative terminal 3, with a battery pack and the conductor like a coin put in a pocket, so as to prevent a person who touches the conductor from feeling strange. SOLUTION: First and second electrical paths 5, 6 are conducted to each other by a bypath electrical path 22 provided near both terminals 2, 3. In a portion of this bypass electrical path 22, an off-state holding resistor 23 having large resistance value is provided. If both terminals 2, 3 are short-circuited even once, a discharging FET 7 is left off, as it is unless the next charging operation is performed. As a result, even if the short-circuiting is repeated, release will not cause the on/off of the discharging FET 7 to be repeated so that the problem is solved. COPYRIGHT: (C)2005,JPO&NCIPI
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