Patent ID: 11942888
Assignee: NANJING CHERVON INDUSTRY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  E | IPC E  H

Claim 13:
14. A power tool, comprising:
a motor;
a driver circuit for driving the motor;
a capacitor configured to filter out current spikes in a power supply;
a capacitor switch connected to the capacitor and configured to control a working state of the capacitor, the capacitor comprises a first capacitor and a second capacitor, the capacitor switch comprises a first switch, and the first switch is connected to the first capacitor and configured to control an on or off state of the first capacitor, the capacitor switch further comprises a second switch, the second switch is connected to the second capacitor and configured to control an on or off state of the second capacitor;
a temperature detection unit configured to detect a temperature of a related object; and
a controller electrically connected to the capacitor switch and configured to control an on or off state of the capacitor switch;
wherein the capacitor switch comprises a third switch and a fourth switch, the third switch is connected between the power supply and the capacitor and configured to control a charging state of the capacitor, and the fourth switch is connected in parallel to the capacitor and configured to control a discharging state of the capacitor,
wherein the controller is configured to:
acquire the temperature of the related object; and
control the third switch and the fourth switch to be in complementary on or off states at a certain frequency when the temperature is lower than a temperature threshold, and

wherein the complementary on or off states refer to that the fourth switch is turned off while the third switch is turned on and that the fourth switch is turned on while the third switch is turned off.