The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2026
Filed:
Mar. 19, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Jian Yao, Shanghai, CN;
Chengwu Duan, Shanghai, CN;
Vincent Fedida, Shanghai, CN;
Seunghwan Keum, Northville, MI (US);
Alan G. Holmes, Clarkston, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A cooled axial flux electric motor includes a rotationally-fixed stator defining a rotational axis and having a plurality of conductive stator magnetic poles arranged radially about the axis. The motor also includes a rotor spaced axially from one side from the stator and rotatably mounted coaxially with the rotational axis and defined by inside and outside diameters. The rotor has a first exterior surface facing the stator and a second exterior surface arranged opposite the first exterior surface. A ferromagnetic rotor core defines the rotor second exterior surface. The rotor also includes alternating south and north pole permanent magnets (PMs) arranged on the rotor core symmetrically around the axis and facing the stator. The rotor additionally includes channels extending radially outwardly across the rotor and configured to direct a coolant, via centrifugal force, from the inside diameter toward the outside diameter as the rotor rotates about the axis.