Patent · US Active

Stator with a cooling jacket, electric machine and motor vehicle

US11817744B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Felix Bolotnikov · Munich, DE
Thomas Hoefler · Stuttgart, DE
Joachim MAERZ · Holzkirchen, DE
Jerome RAGOT · Munich, DE

Key dates

Filing date	Oct 23, 2019
Grant date	Nov 14, 2023
Priority date	—
Expiry date	Jun 2, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02K9/193
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A stator for an electric machine of a motor vehicle includes a laminated core having an inner side with winding grooves and an outer side. Windings, which are arranged in the winding grooves, form winding heads on axially opposing front faces of the laminated core. A cooling jacket conducts cooling fluid and has a first metal sheet which forms an inner wall of the cooling jacket facing the laminated core, and a second metal sheet which forms an outer wall of the cooling jacket surrounding the inner wall. An axial height of the cooling jacket exceeds an axial height of the laminated core. The cooling jacket has a laminated-core cooling jacket region for encasing the laminated core and two axially opposing winding-head cooling jacket regions adjoining the laminated-core cooling jacket region for encasing the winding heads.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.