CN216362262U

CN216362262U - Iron core unit, joint type stator iron core and motor

Info

Publication number: CN216362262U
Application number: CN202122654476.5U
Authority: CN
Inventors: 鄢秋亮; 贺智威; 刘�东; 柳哲
Original assignee: Candela Shenzhen New Energy Technology Co Ltd
Current assignee: Candela Shenzhen New Energy Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-22
Anticipated expiration: 2031-10-29

Abstract

The utility model provides an iron core unit, a joint type stator iron core and a motor, wherein the joint type stator iron core can relieve the generated stress so as to further reduce the iron loss; the iron core unit comprises a first sheet set which comprises a plurality of first laminations which are sequentially connected end to end; the second sheet group comprises a plurality of second laminated sheets which are sequentially connected end to end, and gaps are formed between the adjacent second laminated sheets; the joint type stator iron core comprises a plurality of iron core units, wherein a plurality of first sheet groups and a plurality of second sheet groups are arranged in a staggered mode and are connected through rivets; the motor includes a joint type stator core; the iron core unit, the joint type stator iron core and the motor provided by the utility model can relieve the distribution of extrusion stress, reduce the iron loss and improve the overall efficiency.

Description

Iron core unit, joint type stator iron core and motor

Technical Field

The utility model relates to the technical field of motors, in particular to an iron core unit, a joint type stator iron core and a motor.

Background

The joint type motor stator is a stator topological structure convenient for automatic winding, the stator structure is generally suitable for a concentrated winding with a medium-small pitch Y equal to 1, an iron core can be linearly unfolded along the circumferential direction, and automatic winding inserting of each tooth part of the stator is facilitated; the automatic wire embedding mode can enable the winding to be orderly arranged, so that more copper wires can be placed in the same slot area, the high-efficiency slot-full-rate motor is easier to realize, the copper consumption of the winding is reduced, and the efficiency is improved;

in the prior art, a joint type stator core is formed by laminating two layers to form a group of cores, and then a plurality of groups of cores form the stator core, and a movable joint is arranged between each layer of core and the adjacent core; in order to reduce the magnetic resistance, the two tooth parts need to be tightly matched, so the connection needs to be carried out by adopting a riveting manner, and after the lamination is riveted, the distribution of the stress of the stator core is increased due to riveting, and the stress concentration blocks increase the iron loss of the stator, so that the efficiency is low, and the iron loss is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an iron core unit, a joint type stator iron core and a motor, wherein the joint type stator iron core can relieve the generated stress so as to reduce the iron loss;

the present invention provides an iron core unit, comprising:

the first sheet group comprises a plurality of first laminated sheets which are sequentially connected end to end;

and the second sheet group comprises a plurality of second laminated sheets which are sequentially connected end to end, and a gap is formed between every two adjacent second laminated sheets.

As a further technical scheme, the gap formed between the second laminations is 30-50 μm.

As a further technical solution, the gap formed between the second laminations is 40 μm.

The utility model also provides a joint type stator core which comprises a plurality of core units, wherein a plurality of first sheet groups and a plurality of second sheet groups are arranged in a staggered mode and connected through rivets.

As a further technical scheme, the connecting lines on the first sheet set and the gaps on the second sheet set are arranged in a staggered mode.

The utility model also provides a motor which comprises the joint type stator core.

According to the technical scheme, the gaps are formed among the second lamination sheets in the second sheet group, so that the extrusion stress distribution can be relieved, the iron loss is reduced, and the overall efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a portion of an articulated stator according to the present invention;

fig. 2 is a schematic view showing a structure of a second lamination attachment position according to the present invention.

Description of reference numerals:

1-a first lamination; 2-a second lamination; 3-a gap.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the present invention provides an iron core unit including:

the device comprises a first sheet group and a second sheet group, wherein the first sheet group comprises a plurality of first laminations 1 which are sequentially connected end to end; the second sheet group comprises a plurality of second laminated sheets 2 which are sequentially connected end to end, and gaps 3 are formed between the adjacent second laminated sheets 2; in the present invention, it is preferable that the gap 3 formed between the second laminates 2 is 30 to 50 μm; more specifically, the gap 3 formed between the second laminations 2 is 40 μm;

the utility model also provides a joint type stator core which comprises a plurality of core units, wherein a plurality of first sheet groups and a plurality of second sheet groups are arranged in a staggered manner and connected through rivets;

as shown in fig. 1, the connecting seam of the first sheet group and the seam 3 of the second sheet group are in a staggered state, and a plurality of first sheet groups and a plurality of second sheet groups are needed, so that the first sheet groups and the second sheet groups are in an annular structure after being formed, and a strip structure needs to be ensured before winding; and then can be adjusted as required, and then the yoke teeth on the first sheet group and the second sheet group are wound with windings; before winding, a plurality of first sheet groups and a plurality of second sheet groups need to be fixed, and in the utility model, rivets sequentially penetrate through the plurality of first sheet groups and the plurality of second sheet groups which are alternately arranged to be fixed; therefore, the whole can be adjusted to be in a horizontal state before winding, and winding can be carried out on the yoke teeth through a winding machine;

after winding is finished, the angle needs to be adjusted, then the head end and the tail end of the articulated stator core are connected, and stress to the plurality of first sheet groups and the plurality of second sheet groups can be generated due to the existence of the winding during rotation; at the moment, stress concentration blocks in the generated stress can be dispersed due to the existence of the gap 3, so that the stress acts on the second lamination 2 in each second plate group independently and cannot be further conducted, and the influence of the stress can be avoided under the condition of ensuring the reduction of the magnetic resistance;

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A core unit, characterized by comprising:

the first sheet group comprises a plurality of first laminated sheets (1) which are sequentially connected end to end;

the second sheet group comprises a plurality of second laminated sheets (2) which are sequentially connected end to end, and a gap (3) is formed between the second laminated sheets (2).

2. A core unit according to claim 1, characterized in that the gaps (3) formed between the second laminations (2) are 30-50 μm.

3. A core unit according to claim 2, characterized in that the gaps (3) formed between the second laminations (2) are 40 μm.

4. An articulated stator core comprising a plurality of core units according to any one of claims 1-2, wherein a plurality of first sheet groups and a plurality of second sheet groups are arranged alternately and connected by rivets.

5. Articulated stator core according to claim 4, characterized in that the connecting lines on the first sheet set are staggered with respect to the slots (3) on the second sheet set.

6. An electric machine comprising the articulated stator core according to any one of claims 4 to 5.