BATTERY PACK, POWER TOOL AND BATTERY CHARGER

摘要

A battery pack includes: a plus terminal and a minus terminal; a secondary battery; and a booster. The secondary battery has a rated voltage and is configured to output a battery voltage across the plus terminal and the minus terminal. A charging device and a discharging device are selectively connectable to the plus terminal and the minus terminal. The charging device charges the secondary battery. The discharging device performs a job with the battery voltage supplied from the secondary battery. The booster is configured to boost the battery voltage to a voltage greater than the rated voltage. The voltage boosted is used as a control voltage for either connecting the secondary battery to or disconnecting the secondary battery from the charging device or the discharging device.

主权项

1. A battery pack comprising:
a plus terminal and a minus terminal; a secondary battery having a rated voltage and configured to output a battery voltage across the plus terminal and the minus terminal, a charging device and a discharging device being selectively connectable to the plus terminal and the minus terminal, the charging device charging the secondary battery, the discharging device performing a job with the battery voltage supplied from the secondary battery; and a booster configured to boost the battery voltage to a voltage greater than the rated voltage, the voltage boosted being used as a control voltage for either connecting the secondary battery to or disconnecting the secondary battery from the charging device or the discharging device.