Brushless DC motor having high power density for power tool
US12107468B2 · kind B2 · utility
0Cited by
41References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2021 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Dec 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless direct-current (BLDC) motor for a power tool includes a rotor assembly and a stator assembly including stator windings. A ratio of a motor size (Km) constant of the motor to an electrical envelope of the motor including electrical parts of the motor is greater than approximately 850 (N·m/√W)/m{circumflex over ( )}3. A ratio of a motor size (Km) constant of the motor to a magnetic envelope of the motor including stator core and windings is greater than approximately 980 (N·m/√W)/m{circumflex over ( )}3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.