STATOR CORE COOLING STRUCTURE AND MOTOR COOLING SYSTEM

Title:

STATOR CORE COOLING STRUCTURE AND MOTOR COOLING SYSTEM

Document Type and Number:

WIPO Patent Application WO/2021/238656

Kind Code:

A1

Abstract:

Disclosed in the present application are a stator core cooling structure and a motor cooling system. The stator core cooling structure comprises a stator core and a motor housing; a plurality of axial grooves are distributed on the outer circumference of the stator core and/or the inner circumference of the motor housing, and the axial grooves extend in the axial direction of the stator core and/or the motor housing; the stator core is mounted in the motor housing; and coolant passages are formed between the stator core and the motor housing by means of the axial grooves, so that the coolant cools the stator core by means of the coolant passages. In the stator core cooling structure of the present application, the cooling passages formed between the stator core and the motor housing enable fluid to directly contact and cool the stator core, with a large contact area and high cooling efficiency. In addition, in the present application, the axial grooves in the stator core are formed by stamping, and the stator core cooling structure is simple, thus solving the problems of long machining period for slotting in inner walls of housings, high manufacturing cost, and complicated assembly process in the prior art.

Inventors:

YU PING (CN)
LING XINLIANG (CN)
HEI YUXIA (CN)
HOU JIANNAN (CN)
WANG HAIBIN (CN)

Application Number:

PCT/CN2021/093369

Publication Date:

December 02, 2021

Filing Date:

May 12, 2021

Export Citation:

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Assignee:

JING JIN ELECTRIC TECH CO LTD (CN)

International Classes:

H02K1/20; H02K3/24; H02K5/16; H02K5/20; H02K9/19

Foreign References:

CN105431349A	2016-03-23
US20050206252A1	2005-09-22
US7834492B2	2010-11-16
CN111509876A	2020-08-07

Other References: