Electric power tool

An electric power tool adapted to operate based on electric energy provided by a battery unit, the battery unit including a battery positive terminal and a battery negative terminal that are cooperatively configured to output the electric energy, said electric power tool comprising:

• a device positive terminal and a device negative terminal that are configured to be electrically connected to the battery positive terminal and the battery negative terminal, respectively, for receiving the electric energy therefrom;
• a power module electrically connected to said device positive terminal and said device negative terminal for receiving the electric energy therefrom, and configured to output an operating power based on the electric energy;
• a motor;
• a driving module electrically connected to said power module and said motor, and configured to drive said motor to operate based on the operating power;
• and
• a control module electrically connected to said power module and said driving module, and configured to, based on a capacity of the battery unit, control said driving module to adjust a proportion of the operating power sent from said power module to said motor in a manner that the proportion of the operating power sent to the motor is positively correlated to the capacity of the battery unit, and determine a minimum operating voltage for the battery unit,
• wherein said control module is further configured to control said driving module to terminate operation of said motor when the electric energy provided by said battery unit is less than the minimum operating voltage that corresponds to the capacity of said battery unit.