CN219067934U

CN219067934U - Block structure type generator stator

Info

Publication number: CN219067934U
Application number: CN202223564153.8U
Authority: CN
Inventors: 张兴林; 顾玮玮
Original assignee: Getec Vehicle Technology Suzhou Co ltd
Current assignee: Getec Vehicle Technology Suzhou Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-23
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a block structure type generator stator which is formed by superposing stator punching sheets, wherein the stator punching sheets comprise an outer circular contour and a winding plate, a coil winding is wound on the winding plate, the stator punching sheets are formed by splicing single sheets, the single sheets are identical in shape and are in a T shape, the outer circular arc-shaped edge of each single sheet forms the stator punching sheet to comprise the outer circular contour, a groove is formed in the outer circular arc-shaped edge, and two sides of the outer circular arc-shaped edge are provided with mutually matched circular arc edges so that each single sheet can be spliced with the adjacent single sheets through the circular arc edges. The beneficial effects of the utility model are mainly as follows: the splicing mode is adopted, so that the winding process is more convenient; the single-sheet stamping process is simpler, less stamping waste is produced, and the production cost can be greatly reduced; the splicing mode of the arc edges can reduce the influence of the tiny air gap on the magnetic flux caused by splicing as much as possible.

Description

Block structure type generator stator

Technical Field

The utility model relates to the technical field of motors of new energy automobiles, in particular to a block structure type generator stator.

Background

For new energy vehicles, the performance of the motor/generator determines most of the vehicle's performance. In a stator of an inner rotor type rotary electric machine in which an armature is disposed on an outer peripheral side of a magnetic field, a stator core configured by dividing an annular yoke portion and an integrally formed tooth group for the purpose of shortening a coil circumference is known, and a rotor is housed inside the stator core in a stator using the stator core. Such structures are common, and reference may be made to chinese patent CN104734376B, CN205489836U, etc.

However, the motor stators with the structures are formed by superposing integrally formed stator punching sheets, and then winding to form stator windings. Because the stator is provided with a circle of winding baffle plates, the winding process is complex, the stamping process of the stator punching sheet is complex, and the manufacturing cost is high.

Disclosure of Invention

In order to solve the problems, the utility model provides a block structure type generator stator.

The utility model is realized by the following technical scheme:

the utility model provides a piece-wise structure generator stator, is formed by the stack of stator punching, the stator punching includes excircle profile and wire winding board, around being equipped with the coil winding on the wire winding board, the stator punching is formed by the monolithic concatenation, the monolithic shape is the same, "T" shape, and its convex outside forms the stator punching and includes the excircle profile, the convex outside is provided with a recess, but the both sides of convex outside are the circular arc limit of mutually supporting so that every monolithic can splice with adjacent monolithic through the circular arc limit, with the straight flange that circular arc outside looks vertically forms the wire winding board, form the stator piece after the monolithic stack, with the coil winding is wound after on the wire winding board of stator piece again with the stator piece concatenation forms the generator stator.

Preferably, the coil is wound in a three-layer structure.

Preferably, insulating paper is arranged between adjacent stator segments.

Preferably, the stator splicing blocks are obliquely overlapped by the single sheets to form a chute type structure, and the grooves are spliced into welding grooves.

Preferably, a front end cover and a rear end cover are respectively arranged above and below the stator splicing blocks, an electrode leading-out end is further arranged on the front end cover, and a water jacket for water cooling is further fixedly arranged on the periphery of the stator spliced by the stator splicing blocks.

Preferably, the winding plate is provided with a winding groove.

The beneficial effects of the utility model are mainly as follows: the splicing mode is adopted, so that the winding process is more convenient; the single-sheet stamping process is simpler, less stamping waste is produced, and the production cost can be greatly reduced; the splicing mode of the arc edges can reduce the influence of the tiny air gap on the magnetic flux caused by splicing as much as possible.

Drawings

FIG. 1 is a schematic illustration of a motor stator of the present utility model;

FIG. 2 is a schematic illustration of a single piece combination of stator laminations of the motor stator of the present utility model;

FIG. 3 is a monolithic schematic of a stator lamination of the present utility model;

FIG. 4 is a schematic illustration of the stator laminations of the present utility model stacked on one another to form stator segments and wound;

FIG. 5 is a schematic illustration of the welding of stator segments superimposed by means of a chute in accordance with the present utility model;

FIG. 6 is a schematic diagram of the magnetic flux detection of the motor stator of the present utility model;

fig. 7 is a schematic view of a second embodiment of a single piece of the stator lamination of the present utility model.

Detailed Description

So that the objects, advantages and features of the present utility model can be more clearly and specifically set forth, a more particular description of the preferred embodiments will be rendered by the following non-limiting description thereof. The embodiment is only a typical example of the technical scheme of the utility model, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the utility model.

As shown in fig. 1 and 2, the utility model discloses a block structure type generator stator, which is formed by superposing stator punching sheets 1, wherein the stator punching sheets 1 comprise an outer circular contour 2 and a winding plate 3, and a coil winding 4 is wound on the winding plate 3. The stator winding directly adopts an outgoing line, the winding directly forms UVW (power supply inlet), the tail end of U2V2W2 is also directly led out, and the triangular connection and the star connection can be switched through the U ' V ' W ' connection mode.

The stator punching sheet 1 of the present utility model is formed by splicing single sheets 101, and as shown in fig. 3, the single sheets have the same shape and are in a T shape, the circular arc-shaped outer edge 102 of the single sheets forms the stator punching sheet 1 and comprises an outer circular contour 2, a groove 103 is arranged on the circular arc-shaped outer edge 102, two sides of the circular arc-shaped outer edge 102 are circular arc edges 104 which can be matched with each other, so that each single sheet 101 can be spliced with the adjacent single sheet 101 through the circular arc edges 104, and a straight edge 105 perpendicular to the circular arc-shaped outer edge 102 forms the winding plate 3. The arc edge 104 adopts convex circles and concave circles with the same radian, so that the arc edge can be matched and connected, and is convenient to manufacture. Since all of the single pieces 101 are identical in construction, the cost of the stamping die is greatly reduced and less scrap is produced.

When the adjacent circular arc edges 104 are spliced, the single sheet 101 can form a complete circle of stator punching sheet 1. However, the utility model is not superimposed by a single round stator lamination 1 as in the prior art.

As shown in fig. 4 and 5, the single sheets 101 are adopted to be overlapped, and a stator splicing block 106 is formed after the overlapping; next, the coil winding 4 is wound on the winding plate 3 of the stator segment 106; and then, splicing the stator splicing blocks 106 through the circular arc edges 104 to form the generator stator. This is done for ease of winding, since the coil winding 4 is easily wound on the winding plate 3 without the obstruction of winding on both sides of the stator segment 106.

In the preferred embodiment, the coil winding 4 is a three-layer structure. Insulating paper 5 is arranged between adjacent stator segments 106.

In the preferred embodiment, the stator segments 106 are formed by obliquely overlapping the single sheets 101 to form a chute structure, and the grooves 103 are spliced into the welding grooves 6. The upper and lower parts of the stator splicing block 106 are respectively provided with a front end cover 7 and a rear end cover 8, the front end cover 7 is also provided with an electrode leading-out end 9, the periphery of the stator spliced by the stator splicing block 106 is also fixedly provided with a water jacket for water cooling, and the water jacket has the function of providing a water cooling mode for the subsequent stator for fixing the stator. The utility model adopts the purpose that the stator adopts the chute, so as to reduce electromagnetic vibration and noise of the motor and reduce torque pulsation. When the stator and the rotor all adopt the same chute angle, the genes of electromagnetic characteristics are basically consistent, and specific subharmonics are weakened basically.

As can be seen from fig. 6, the manner of splicing the circular arc edges can reduce the influence of the small air gap on the magnetic flux caused by splicing as much as possible, and ensure that the magnetic flux is identical to that of the whole-circle stator punching sheet.

Fig. 7 discloses a second embodiment, the winding board 3 is provided with a winding slot 30 with a circular arc cross section, which is beneficial to winding, i.e. the winding can be clamped in the winding slot 30, so that the whole winding mode is faster.

The utility model has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. The utility model provides a piece together block structure formula generator stator, is formed by stator punching (1) stack, stator punching (1) include excircle profile (2) and coiling board (3), around being equipped with coil winding (4), its characterized in that on coiling board (3): stator punching (1) is formed by the concatenation of monolithic (101), monolithic shape is the same, is "T" type, and its convex outside (102) forms stator punching (1) including excircle profile (2), be provided with a recess (103) on convex outside (102), but the both sides of convex outside (102) are circular arc limit (104) of mutually supporting so that every monolithic (101) can pass through circular arc limit (104) and adjacent monolithic (101) concatenation, with straight flange (105) that arc outside (102) are mutually perpendicular forms coiling board (3), form stator piece (106) after monolithic (101) stack, with coil winding (4) are wound coil on coiling board (3) of stator piece (106) again with stator piece (106) concatenation forms the generator stator.

2. The tile structure generator stator of claim 1, wherein: the coil winding (4) is of a three-layer structure.

3. The tile structure generator stator of claim 1, wherein: insulating paper (5) is arranged between adjacent stator segments (106).

4. The tile structure generator stator of claim 1, wherein: the stator splicing blocks (106) are obliquely overlapped by the single sheets (101) to form a chute type structure, and the grooves (103) are spliced into welding grooves (6).

5. The tile structure generator stator of claim 4, wherein: the upper and lower sides of stator piece (106) respectively are provided with front end housing (7) and rear end housing (8), still be provided with electrode extraction end (9) on front end housing (7), the stator periphery that stator piece (106) spliced is still fixed and is provided with the water jacket that the water cooling was used.

6. The tile structure generator stator of claim 1, wherein: a winding groove (30) is formed in the winding plate (3).