US-12620842-B2 - Stator assembly and motor

US12620842B2US 12620842 B2US12620842 B2US 12620842B2US-12620842-B2

Abstract

A stator assembly and a motor are provided. The stator assembly has a stator core and a winding. The stator core has a stator yoke portion, at least one stator tooth, and at least one winding. The stator tooth is disposed along the axial direction of the stator yoke portion. The stator tooth is detachably connected to the stator yoke portion. The winding is wound on the stator tooth. The stator yoke portion is provided with a stator yoke groove and/or a stator projection adapted to the shape of the stator tooth. The stator tooth passes through the stator yoke groove and/or the stator projection to form the stator core.

Inventors

Di Wu
Guyu WU
Yiming Hu
Liming Gong
Ping Li

Assignees

GUANGDONG WELLING MOTOR MANUFACTURING CO., LTD.
MIDEA WELLING MOTOR TECHNOLOGY (SHANGHAI) CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20211028
Priority Date: 20190429

Claims (16)

1 . A stator assembly comprising: a stator core comprising: a stator yoke portion; and at least one stator tooth comprising at least one stator tooth shoe and a stator tooth body, the stator tooth body comprising a first end and a second end, wherein the stator tooth body extends in an axial direction of the stator yoke portion between the first end and the second end, and each of the at least one stator tooth is detachably connected to the stator yoke portion at the first end of the stator tooth body, wherein the stator tooth shoe is detachably connected to the second end of the stator tooth body, and wherein a positioning convex rib is disposed on an outer side of the at least one stator tooth between the stator tooth shoe and the stator yoke portion in the axial direction of the stator yoke portion when the first end of the stator tooth body is detachably connected to the stator yoke portion and is configured to inhibit an axial translation of the second end of the stator tooth body of the at least one stator tooth toward the stator yoke portion when the first end is detachably connected to the stator yoke portion, and at least one winding wound on the at least one stator tooth, wherein the stator yoke portion is provided with a stator yoke groove and/or a stator protrusion adapted to a shape of the first end of the stator tooth body, and the at least one stator tooth is configured to detachably connect to the stator yoke portion by an insertion of the first end of the stator tooth body into the stator yoke groove and/or the stator protrusion in the axial direction to form the stator core.
2 . The stator assembly according to claim 1 , wherein the stator yoke portion comprises: a plurality of first magnetically conductive sheets stacked in a radial direction or an axial direction of the stator core.
3 . The stator assembly according to claim 2 , wherein: the stator yoke portion comprises the plurality of first magnetically conductive sheets stacked in the radial direction or the axial direction of the stator core; and the at least one stator tooth comprises a stator tooth body, the stator tooth body comprising a plurality of second magnetically conductive sheets stacked in the radial direction or a circumferential direction of the stator core.
4 . The stator assembly according to claim 3 , wherein the stacking direction of the second magnetically conductive sheets is perpendicular to the stacking direction of the first magnetically conductive sheets.
5 . The stator assembly according to claim 1 , wherein the stator yoke groove at least passes through one end surface of the stator yoke portion in the axial direction.
6 . The stator assembly according to claim 1 , wherein: the stator yoke groove is spaced apart from an outer circumferential surface of the stator yoke portion in a radial direction of the stator core, and the stator yoke groove is spaced apart from an inner circumferential surface of the stator yoke portion in the radial direction; or the stator yoke groove communicates with the outer circumferential surface and/or the inner circumferential surface of the stator yoke portion.
7 . The stator assembly according to claim 1 , wherein: the stator protrusion is formed by outwardly extending an outer circumferential surface of the stator yoke portion in a radial direction of the stator core; and/or the stator protrusion is formed by inwardly extending an inner circumferential surface of the stator yoke portion in the radial direction.
8 . The stator assembly according to claim 1 , wherein: a number of the at least one stator tooth shoe is one, and the stator tooth shoe is disposed at one end of the stator tooth body; or a number of the at least one stator tooth shoe is two, and two ends of the stator tooth body are provided with one of the stator tooth shoes respectively.
9 . The stator assembly according to claim 1 , further comprising: a mating groove and a mating convex rib having mated shapes, wherein one of the mating groove and the mating convex rib is disposed on the stator tooth body, and the other is disposed on the at least one stator tooth shoe, so as to realize connection between the at least one stator tooth shoe and the stator tooth body through the mating between the mating groove and the mating convex rib.
10 . The stator assembly according to claim 1 , wherein a number of the stator yoke groove and/or the stator protrusion is plural, and the plurality of stator yoke grooves and/or stator protrusions are uniformly arranged on the stator yoke portion around an axis of the stator core.
11 . The stator assembly according to claim 1 , wherein a cross-sectional area of the stator yoke portion has a shape of one of a circle, an ellipse and a regular polygon.
12 . The stator assembly according to claim 1 , wherein: a material of the stator yoke portion comprises at least one of soft magnetic materials or solid steel, and a material of the at least one stator tooth comprises at least one of soft magnetic materials or solid steel.
13 . A motor comprising: at least one stator assembly according to claim 1 ; and at least one rotor, each of the at least one rotor being arranged to correspond to the at least one stator assembly.
14 . The motor according to claim 13 , wherein: a number of the at least one stator assembly is a first number, the at least one rotor comprises a plurality of rotors, a number of the plurality of rotors is a second number, the first number is smaller than the second number, and each of the at least one stator assembly is arranged between two adjacent rotors of the plurality of rotors; or the at least one stator assembly comprises a plurality of stator assemblies, the number of the plurality of stator assemblies is a first number, the number of the at least one rotor is a second number, the first number is greater than the second number, and each of the at least one rotor is arranged between two adjacent stator assemblies of the plurality of stator assemblies.
15 . The motor according to claim 13 , wherein: a number of the at least one stator assembly is at least two, and the at least two stator assemblies have the same number of stator teeth, or the at least two stator assemblies have the same number of phases; or a number of the at least one stator assembly is at least two, and the at least two stator assemblies have different numbers of stator teeth, or the at least two stator assemblies have different numbers of phases.
16 . The motor according to claim 13 , wherein the at least one rotor comprises a plurality of rotors, and rotation shafts of the plurality of rotors are coaxial, parallel or perpendicular.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a continuation application of PCT International Application No. PCT/CN2019/114159, filed on Oct. 29, 2019, which claims priority to and benefits of Chinese Patent Application No. 201910356995.8 filed with China National Intellectual Property Administration on Apr. 29, 2019 and entitled “STATOR ASSEMBLY AND MOTOR”, and Chinese Patent Application No. 201920608027.7 filed with China National Intellectual Property Administration on Apr. 29, 2019 and entitled “STATOR ASSEMBLY AND MOTOR”. The entire content of each of Chinese Patent Application No. 201910356995.8 and Chinese Patent Application No. 201920608027.7 is incorporated herein by reference for all purposes. No new matter has been introduced. FIELD The present disclosure relates to the technical field of motors, and particularly relates to a stator assembly and a motor comprising the stator assembly. BACKGROUND At present, in the prior art, when winding is performed on a motor, since the size of the winding grooves for winding is relatively fixed, the power level of the stator core is limited, and before each implementation of winding, the corresponding operation power has been set, which greatly affects the expansion of the product, and also affects the winding efficiency due to the single winding mode. SUMMARY In order to solve at least one of the above technical problems, an object of the present disclosure is to provide a stator assembly. Another object of the present disclosure is to provide a motor comprising the stator assembly. In order to achieve the above objects, the embodiment of the first aspect of the present disclosure provides a stator assembly, comprising: a stator core and at least one winding, wherein the stator core comprises: a stator yoke portion; and at least one stator tooth, each of the stator teeth being disposed in an axial direction of the stator yoke portion, and the stator tooth being detachably connected to the stator yoke portion, and the at least one winding being wound on the at least one stator tooth, wherein the stator yoke portion is provided with a stator yoke groove and/or a stator protrusion adapted to the shape of the stator tooth, and the stator tooth passes through the stator yoke groove and/or the stator protrusion to form the stator core. The stator assembly provided by the embodiment of the first aspect of the present disclosure comprises a stator core comprising a stator yoke portion, at least one stator tooth and at least one winding. That is, the number of the stator teeth and the number of the windings may both be one or more. By disposing each of the stator teeth in the axial direction of the stator yoke portion and detachably connecting each of the stator teeth to the stator yoke portion, the winding is not limited by the shape of the stator core when wound, and each of the stator teeth can be connected to the stator yoke portion after the winding has been wound. The winding mode is flexible and adaptable, and the winding efficiency of the winding is improved. In addition, by reasonably arranging the size of the stator teeth or the spacing between the stator teeth so as to adjust the size of the winding grooves, the number of the windings can be flexibly and adaptively set, such that the power level of the stator core can be reasonably adjusted, which solves the problem in the prior art that the power level of the stator core is limited due to the single size of the winding grooves. Moreover, at the time of assembling the stator tooth and the stator yoke portion, each of the stator teeth is directly passed through a stator yoke groove adapted to the shape of the stator tooth or the stator tooth is engaged with the stator protrusion; and even part of a plurality of stator teeth may be disposed to pass through the stator yoke groove, and the remaining stator teeth are engaged with the stator protrusion. Any of the above manners can achieve quick assembly of the stator teeth and the stator yoke portion, which effectively improves the assembling efficiency of the stator teeth and the stator yoke portion. Materials of the stator tooth and the stator yoke portion are optionally magnetically conductive materials, such as silicon steel sheets, soft magnetic materials, or solid steel, which all can achieve the objects of the present disclosure, and therefore should all be within the protection scope of the present disclosure. It should be noted that there may be a plurality of windings, and the shapes of wire wraps between the plurality of windings may be the same or different. In addition, the stator assembly in the above embodiment provided by the present disclosure may also have the following additional technical features: In the above embodiment, the stator yoke portion comprises: a plurality of first magnetically conductive sheets stacked in a radial direction or an axial direction of the stator core. The stator yoke portion comprises a plural