| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack for preventing consumption of energy and over-discharge due to a circuit board when an equipment is not connected.SOLUTION: A circuit board 9 having a protection circuit 13 to monitor battery cells 2 is installed movably in a battery cell set 5 which has a plurality of battery cells 2 for charging. An equipment connector 7 to connect equipment or the like and a circuit board connector 8 to connect the battery cell set 5 are installed in the circuit board 9. When the equipment is connected to the battery pack 1, the circuit board 9 is pressed in an X2 direction while an equipment side connector is half engaged with the equipment connector 7. At this time, the circuit board 9 and the equipment or the like are electrically connected at a second position. At the same time, the circuit board connector 8 and a corresponding connecting plate terminal 16 are connected, and the battery cell set 5 and the circuit board 9 are connected. When the equipment or the like is not in connection, the battery cell set 5 and the circuit board 9 are not connected, and energy is not consumed and over-discharge is prevented. |
