Patent ID: 9048708
Filing Date: 2015-06-02
Classification: H02K

Abstract:
1. An integrated drive motor assembly comprising: a motor comprising a motor housing and a motor unit located in the motor housing, said motor housing comprising a mounting flange including a sealing surface and a peripheral edge; an electronics drive module connected to said mounting flange of said motor housing, said electronics drive module comprising: (i) a metal frame comprising a peripheral wall that defines a central opening and that includes an upper edge and a lower edge; (ii) a metal floor connected to said peripheral wall and extending across said central opening, said floor comprising an upper surface and a lower surface; a power supply PCBA located adjacent said upper surface of said floor; a switching chip assembly located adjacent said lower surface of said floor, said switching chip assembly comprising a base plate and a plurality of switches connected to said base plate, wherein said base plate is thermally associated at a first thermal interface to said lower surface of said floor and conducts heat into said floor and is thermally associated at a second thermal interface to said mounting flange of said motor housing and conducts heat into said mounting flange, wherein heat conducted to said floor by said base plate is conducted to said peripheral wall of said frame and heat conducted to said mounting flange from said base plate is conducted to said motor housing; wherein said lower edge of said metal frame is sealingly engaged with said sealing surface of said motor housing mounting flange, said integrated drive motor assembly comprising an environmental seal located between said lower edge of said frame and said sealing surface of said mounting flange and extending coextensively with said lower edge of said peripheral wall of said frame such that a sealed zone is defined within said peripheral wall of said frame and said first and second thermal interfaces are located within said sealed zone.