Control device for an electric motor
US7359628B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Jun 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/937
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a drive device for an electric motor, in particular for a brushless DC motor in an electrical tool, which is powered by a rechargeable battery. The drive device has at least one power semiconductor, in particular for controllable application of an electrical voltage to the electric motor, a control circuit for controlling the power semiconductor, and a mounting plate which, for example, is in the form of a printed circuit board. At least one portion of the control circuit, in particular electrical and/or electronic components as well as the conductor tracks (which connect the electrical and/or electronic components) of the control circuit, is arranged on the mounting plate. The power semiconductor is arranged on the mounting plate and/or on a mount element, which is mounted on the mounting plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.