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:
May. 26, 2026
Filed:
Sep. 26, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A radial flux electric motor includes a stator having a radially inner stator surface and a rotor mounted inside the stator. The rotor defines a rotational axis and has axially opposite rotor ends and a radially outer rotor surface positioned proximate the radially inner stator surface, thereby establishing an airgap therebetween. The rotor also includes a fluid circulation arrangement having at least one fluid channel extending through the rotor to the radially outer rotor surface and configured to receive a liquid via a first passage and a gas via at least one second passage. The fluid circulation arrangement is also configured to direct the liquid and the gas, via centrifugal force, into the airgap as the rotor rotates inside the stator sufficiently to discharge the liquid and the gas out of the airgap at the axially opposite ends of the rotor, thereby cooling the electric motor.