Power tool
US11223315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | May 12, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power tool, includes a power supply module for connecting to AC power; a brushless motor including a rotor and a stator winding; a rectifier module configured to receive the AC power from the power supply module and output a DC bus voltage; a position detection module for detecting a position signal of the brushless motor; a MCU chip configured to receive the position signal of the brushless motor detected by the position detection module and output a driving signal according to the position signal, where the MCU chip includes a controller; and a driving circuit configured to receive the driving signal from the MCU chip to drive the brushless motor, where the driving circuit is connected in series between the MCU chip and the stator winding of the brushless motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.