Motor assembly
AssigneeBrose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
InventorsMartin Pondelek, Stephan Roos
Life of this patent
Estimating the term…
Abstract
A motor assembly has an electric motor with a motor housing and an electronics unit. A first housing shell is formed as a motor carrier and has the motor housing fastened to it. A second housing shell is in the form of a cooling cover. An electronics carrier is arranged in sandwich-like fashion between the motor carrier and the cooling cover. The cooling cover and the motor carrier exhibit greater thermal conductivity than the electronics carrier. The cooling cover and the motor carrier are coupled to one another in heat-conducting fashion at at least one abutment surface.
Claims11
A motor assembly, comprising:
- an electric motor having a motor housing;
- an electronics unit including:
- a first housing shell being a motor carrier and having said motor housing fastened thereto;
- a second housing shell being a cooling cover;
- an electronics carrier sandwiched between said motor carrier and said cooling cover;
- said motor carrier, said electronics carrier and said cooling cover together forming an electronics housing, a peripheral surface of said electronics carrier forming a portion of an outer surface of a housing wall of said electronics housing extending around an outer circumference of said electronics housing and said cooling cover being formed with spacer elements that project over said housing wall;
- said cooling cover and said motor carrier having a thermal conductivity greater than a thermal conductivity of said electronics carrier;
- and
- said cooling cover and said motor carrier being coupled to one another in heat-conducting fashion by way of at least one abutment surface formed by said spacer elements, and
- said motor carrier being formed with at least one projection having a thermally conductive fastening surface for screw-fastening the motor assembly to a heat sink, said thermally conductive fastening surface being a flange-shaped abutment surface between said motor carrier and said cooling cover, said cooling cover and said motor carrier being jointly fastened to the heat sink, and the motor carrier positioned between the cooling cover and the heat sink;
- and
- an electronic inverter circuit with an intermediate circuit capacitor disposed on said electronics carrier, said intermediate circuit capacitor being disposed within a trough-shaped protuberance of said motor carrier and encapsulated within said protuberance.
Dependencies are inferred from the claim text.