Patent · US Active

Cooling device for a stator of an electrical machine, electrical machine and motor vehicle

US11356001B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Andreas Huber · Holzgerlingen, DE
Benjamin KRANK · Munich, DE
Jens Richter · Basel, CH

Key dates

Filing date	Mar 9, 2020
Grant date	Jun 7, 2022
Priority date	—
Expiry date	Mar 9, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F2009/0285
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A cooling device for a stator of an electrical machine, for fitting together with a hollow cylindrical laminated core of the stator, includes multiple cooling channels for conducting cooling fluid along the laminated core, and a fluid ring for provision on an end face of the laminated core. The fluid ring has two fluid ring channels for distributing the cooling fluid to the cooling channels and for receiving the cooling fluid from the cooling channels, and at least two cooling fluid connections for introducing and removing the cooling fluid into and from the fluid ring channels. The fluid ring channels have circumferential-angle-dependent flow cross-sections in the flow direction, in order to evenly distribute the cooling fluid to the cooling channels.

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