Control device for an electric motor
First Claim
1. A device for driving an electric motor (23), in particular a brushless DC motor in an electrical tool which is powered by a rechargeable battery, having at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor (23), having a control circuit (4) for controlling the power semiconductor (3), and having a mounting plate (2), in particular a printed circuit board, with at least a portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), being arranged on the mounting plate (2), and with the power semiconductor (3) being arranged on the mounting plate and/or on a mount element (7) which is mounted on the mounting plate (2).
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a drive device (1) 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 (1) has at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor, a control circuit (4) for controlling the power semiconductor (3), and a mounting plate (2) which, for example, is in the form of a printed circuit board. At least one portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), is arranged on the mounting plate (2). The power semiconductor (3) is arranged on the mounting plate (2) and/or on a mount element (7) which is mounted on the mounting plate (2).
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Citations
16 Claims
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1. A device for driving an electric motor (23), in particular a brushless DC motor in an electrical tool which is powered by a rechargeable battery, having at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor (23), having a control circuit (4) for controlling the power semiconductor (3), and having a mounting plate (2), in particular a printed circuit board, with at least a portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), being arranged on the mounting plate (2), and with the power semiconductor (3) being arranged on the mounting plate
and/or on a mount element (7) which is mounted on the mounting plate (2).
- 2. A device for driving an electric motor (23), in particular a brushless DC motor in an electrical tool which is powered by a rechargeable battery, having at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor (23), having a control circuit (4) for controlling the power semiconductor (3), and having a mounting plate (2), with at least a portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), being arranged on the mounting plate (2), with the mounting plate (2) comprising a metal part (9), whose surface which faces the components (5) and the conductor tracks (6) is provided with an insulating coating (8), such that the components (5), the conductor tracks (6) or the like are themselves located on the coating (8), and such that the metal part (9) is at the same time used as a heat sink.
Specification