| 摘要 |
PROBLEM TO BE SOLVED: To make a battery in an unusable state by accurately detecting deterioration of electric characteristics due to impact. SOLUTION: A battery pack is provided with a plurality of unit batteries 1, a voltage detecting circuit 2 detecting voltage of the unit batteries 1, an impact detecting part 3 detecting impact on the battery pack, a current interrupting element 4 interrupting current of the unit batteries 1, and a control circuit 5 controlling the current interrupting element 4 with voltage differences of the unit batteries 1 detected by the voltage detecting circuit 2 and impact signals detected by the impact detecting part 3. With the battery pack, the control circuit 5 controls the current interrupting element 4 in an off-state to interrupt the current, when the voltage differences of the unit batteries 1 detected by the voltage detecting circuit 2 are larger than a preset value and yet with the impact detecting part 3 in a state detecting the impact. COPYRIGHT: (C)2009,JPO&INPIT
|
