Patent · US Active

Electric machine

US11837922B2 · kind B2 · utility

0Cited by

8References

6Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Moritz Lux · Munich, DE
Lars WETTERAU · Ingolstadt, DE
Peter Suess · Buxtehude, DE
Maximilian Schröder · Ingolstadt, DE
Vladimir Chernogorski · Ingolstadt, DE
Korbinian WEBER · Ingolstadt, DE

Key dates

Filing date	Mar 8, 2021
Grant date	Dec 5, 2023
Priority date	—
Expiry date	May 22, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02K21/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine has a stator and a rotor arranged on a hollow shaft and able to turn relative to the stator about an axis of rotation, wherein the hollow shaft comprises, in a shaft casing, at least one shaft exit opening for coolant supplied to a shaft interior space of the hollow shaft. A cover element is arranged next to the rotor on the hollow shaft, in which is formed a fluid duct comprising a fluid duct inlet and a fluid duct outlet, wherein the fluid duct inlet overlaps with the shaft exit opening and the fluid duct outlet overlaps with a coolant duct inlet of a coolant duct reaching through the rotor in the axial direction relative to the axis of rotation, having a coolant duct outlet on its side opposite the coolant duct inlet, through which the coolant emerges from the rotor.

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