US 12,368,331 B2
Motor with stator tooth tip cooling
Alireza Fatemi, Canton, MI (US); Farzad Samie, Franklin, MI (US); Thomas W. Nehl, Shelby Township, MI (US); Chandra S. Namuduri, Troy, MI (US); and Gokhan Cakal, Madison, WI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 14, 2023, as Appl. No. 18/300,841.
Prior Publication US 2024/0348113 A1, Oct. 17, 2024
Int. Cl. H02K 1/20 (2006.01); H02K 1/16 (2006.01)
CPC H02K 1/20 (2013.01) [H02K 1/165 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a cylindrical stator including a yoke and radially extending teeth, the teeth being circumferentially spaced one from another to define winding slots between adjacent teeth;
multiple conductors disposed within the winding slots;
at least one of the teeth including a tooth tip extending circumferentially in a first direction toward a first adjacent tooth and circumferentially in a second direction, which is opposite the first direction, toward a second adjacent tooth and being radially adjacent a first one of the multiple conductors, the tooth tip having a first channel through which a pressurized fluid flows; and
a radial fluid passage through the yoke and the at least one of the teeth providing the pressurized fluid to the first channel, which includes a first axial channel that extends circumferentially in the first direction from the radial fluid passage and second axial channel that extends circumferentially in the second direction from the radial fluid passage.