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. 01, 2026
Filed:
Feb. 27, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Xiaofeng Yang, Troy, MI (US);
Alireza Fatemi, Canton, MI (US);
Derek F. Lahr, Ann Arbor, MI (US);
Peng Peng, Columbus, OH (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An electric motor includes a stator having windings disposed within winding slots. The stator includes a radially inner stator core surface, a radially outer stator surface, and at least one stator passage extending radially a first distance from the inner stator core surface. A rotor is mounted inside the stator and includes at least one fluid passage extending radially through the rotor to the radially outer rotor surface. A fluid circulation arrangement is configured to receive a first liquid via a first passage and a gas via at least one second passage, and direct the first liquid and the gas, via centrifugal force, into the airgap and the at least one stator passage as the rotor rotates inside the stator to discharge the first liquid and the gas out through the airgap and the at least one stator passage radially, and through the windings axially, thereby cooling the electric motor.