Power tool

A power tool, powered by a battery pack, the power tool comprising:

• a housing;
• a function member configured to implement a function of the power tool;
• a motor operatively coupled to the function member configured to output a power to drive the function member;
• a motor driving circuitry electrically connected to the motor configured to drive the motor to output the power;
• an energy storage component connected in parallel with the motor driving circuitry;
• a main switch, comprising a first coil and a first switch, wherein the first switch is electrically connected to the motor driving circuitry and configured to turn on and off an electrical connection between the motor driving circuitry and the battery pack;
• a control switch electrically connected to the first coil of the main switch configured to control an electrical connection between the first coil of the main switch and the battery pack;
• and
• a power-off protection module electrically connected to the energy storage component and to the first coil configured to cut off an electrical connection between the first coil and the energy storage component in response to the power tool and the battery pack being electrically disconnected.

A power tool, comprising:

• a housing;
• a function member configured to implement a function of the power tool;
• a battery pack detachably mounted to the power tool configured to provide an electric power for the power tool;
• a motor operatively coupled to the function member configured to output a power to drive the function member;
• a motor driving circuitry electrically connected to the motor configured to drive the motor to output the power;
• an energy storage component connected in parallel with the motor driving circuitry;
• an electromagnetic switch, comprising a coil, a first switch, and a second switch, wherein the first switch is electrically connected to the coil and configured to turn on and off an electrical connection between the coil and the battery pack, the second switch is electrically connected to the motor driving circuitry and configured to turn on and off an electrical connection between the battery pack and the motor driving circuitry;
• and
• a power-off protection module electrically connected to the coil and to the energy storage component configured to cut off an electrical connection between the coil and the energy storage component in response to the power tool and the battery pack being electrically disconnected.