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公开(公告)号：US20240421645A1
公开(公告)日：2024-12-19
申请号：US18337192
申请日：2023-06-19
Applicant: GM Global Technology Operations LLC
Inventor： Yi Liu , Qigui Wang , Huaxin Li , Kestutis A. Sonta , Daniel J. Wilson
Abstract: A conductive composite stator unit for an electric motor of a vehicle is provided. The stator unit comprises a stator core comprising a body having a first core end and an opposing second core end. The stator unit further comprises a plurality of conductive bars extending from the first core end to the second core end. Each conductive bar comprises a straight portion disposed in one of the slots such that the respective conductive bar is in contact with the stator core. Each conductive bar comprising a central portion and an outer layer disposed thereabout for electrical current to flow therethrough relative to the longitudinal axis, the outer layer comprises at least two copper-graphene (Cu-Gr) layers. Each Cu-Gr layer comprises a copper layer and a graphene layer. The stator unit further comprises an insulator layer disposed about each of the plurality of conductive bars.
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12.发明申请公开(公告)号：US20250149946A1
公开(公告)日：2025-05-08
申请号：US18504633
申请日：2023-11-08
Applicant: GM Global Technology Operations LLC
Inventor： Qigui Wang , Yi Liu , Kestutis A. Sonta , Vang N. Kue , Akshay Trivedi
Abstract: A composite conductor for a vehicle, a propulsion system for a vehicle, and a method of forming a composite busbar for a vehicle. The composite conductor includes a surface, and a first copper tape laminated to the surface. The composite conductor is electrically conductive exhibiting an electrical conductivity of 1.0×10{circumflex over (7)} Siemens per meter (S/m) or greater. The first copper tape includes a layer of carbon nanotubes sandwiched between a first copper layer and a second copper layer. The composite busbar may be connected to a plurality of windings in the stator of an electric motor.
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