CN208623407U - Stator core, motor stator and switched reluctance drive - Google Patents

Abstract

The utility model discloses a kind of stator core, motor stator and switched reluctance drives, belong to motor technology field, design to solve the problems such as existing stator core air duct groove area is limited.The utility model stator core includes the multiple groups stator punching stacked, every group of stator punching includes that a piece of stator punching or multi-disc stack the identical stator punching in direction, every stator punching full-size A along its length and full-size B in the width direction is unequal, two adjacent groups stator punching stacks direction and differs 90 °, forms ventilation groove in the side wall of stator core.The air duct groove area of the utility model stator core, motor stator and switched reluctance drive is big, and radiating efficiency is high, is particularly suitable for needing in the motor of long time continuous working.

Description

Stator core, motor stator and switched reluctance drive

Technical field

The utility model relates to motor technology field more particularly to a kind of stator core, including the electricity of the stator core Motivation stator and switched reluctance drive including the motor stator.

Background technique

Switched reluctance drive is one kind of synchronous motor, is worked using the torque that rotor magnetic resistance is uneven and generates.With Other motor are similar, and switched reluctance drive includes stator and the rotor that is set in stator, and stator includes stator core, stator Iron core is stacked together by multi-disc stator punching.

In order to increase ventilation and heat channel, expand heat dissipation area, stator punching rotation set angle is stacked in existing structure. Defect is: the global shape of existing stator punching is mostly round or square, can only (30 °, 45 ° etc.) rotations of low-angle stack, Therefore it is limited to be formed by air duct groove area；And after rotation stacks, the close circle in the cross section of stator core, and outside motor Shell is mostly cylinder-like structure, therefore the distance between the outer wall of stator core and shell are small, and heat dissipation effect is bad.

Utility model content

One purpose of the utility model is to propose a kind of stator core that radiating efficiency is high.

Another purpose of the utility model is to propose a kind of motor stator of rapid heat dissipation.

The further object of the utility model is to propose a kind of switched reluctance drive of energy long-term stable work.

For this purpose, on the one hand, the utility model uses following technical scheme:

A kind of stator core, including the multiple groups stator punching stacked, stator punching described in every group includes a piece of stator Punching or multi-disc stack the identical stator punching in direction, the full-size A of the every stator punching along its length with Full-size B in the width direction is unequal, and stator punching described in two adjacent groups stacks direction and differs 90 °, in the stator iron The side wall of core forms ventilation groove.

Wherein, on from top to the direction of bottom end, all the stator punchings are rotated by 90 ° in the same direction is stacked on edge.

Wherein, the difference between the full-size A and the full-size B is 1 millimeter to 5 millimeters.

Wherein, the stator punching is symmetrical about the geometric center of itself, what stator punching described in multi-disc obtained after stacking The full-size of the stator core in length and width directions is identical.

Wherein, the stator punching is rectangle, is formed with locating notch between the long side and short side being connected.

Further, the locating notch whole on the every stator punching is located on the same circle.

Wherein, be provided with connecting hole and at least one default location hole on the stator punching, the default location hole with The distance between described stator punching geometric center is greater than the distance between the connecting hole and the stator punching geometric center.

Further, it is formed with protruding portion in the edge of the stator punching, the default location hole setting is described prominent Out in portion.

On the other hand, the utility model uses following technical scheme:

A kind of motor stator, including stator winding, further include above-mentioned stator core, and the stator winding is wrapped in institute It states in stator core.

In another aspect, the utility model uses following technical scheme:

A kind of switched reluctance drive, including rotor, further include above-mentioned motor stator, and the rotor is set in the electricity In motivation stator.

The full-size A of the stator punching of the utility model stator core along its length and maximum ruler in the width direction Very little B is unequal, therefore stator punching can be rotated by 90 ° and stack without being overlapped, and it is big to be formed by air duct groove area, heat dissipation effect Rate is high；It is rotated by 90 ° and stacks that rear stator core is square in the plane perpendicular to axis, in side wall and cylindric shell Distance is bigger between wall, good heat dissipation effect.

The utility model motor stator includes above-mentioned stator core, and the utility model switched reluctance drive includes above-mentioned Motor stator, stator punching is rotated by 90 ° stack after form ventilation groove, and increase the surface area of side wall, heat dissipation effect Good, motor is able to maintain prolonged steady operation.

Detailed description of the invention

Fig. 1 is the top view for the motor stator that the utility model embodiment one provides；

Fig. 2 is the top view for the stator punching that the utility model embodiment one provides；

Fig. 3 is the schematic perspective view for the stator punching that the utility model embodiment one provides；

Fig. 4 is the top view after the stator punching that the utility model embodiment one provides stacks；

Fig. 5 is the partial structurtes main view after the stator punching that the utility model embodiment one provides stacks.

In figure:

1, stator punching；2, ventilation groove；3, stator winding；11, locating notch；12, connecting hole；13, location hole is preset； 14, protruding portion.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

Embodiment one:

The present embodiment discloses a kind of stator core, motor stator and switched reluctance drive.The switched reluctance drive includes Rotor and the motor stator, rotor are set in motor stator.The motor stator includes stator winding and the stator iron Core, as shown in Figure 1, stator winding 3 is wrapped in the stator core to be stacked together by multi-disc stator punching 1.

As shown in Figures 2 and 3, stator punching 1 is flat laminated structure, annular in shape in main body.As shown in Figure 2 straight In angular coordinate system, full-size A of the every stator punching 1 along length (X-axis) direction and the full-size along width (Y-axis) direction B is unequal, that is, stator punching 1 is non-circular on the whole, non-square, but is rectangle, is trapezoidal or other with long short side Structure.

The locating notch 11 for positioning for end cap is formed between the long side and short side of stator punching 1, whole determines Position notch 11 is located on the same circle.So-called " whole locating notches 11 is located on the same circle " refers to, if locating notch 11 shape is arc, then the radius of curvature of whole locating notches 11 is identical and is located on the same circumference；If locating notch 11 shape is the shape of the non-arc such as straight line, corresponding point on whole locating notches 11 (such as a left side for whole locating notches 11 Endpoint, the right endpoint of whole locating notches 11 or midpoint of whole locating notches 11 etc.) it is located on the same circle.

It extends radially outward to form protruding portion 14 on the edge of stator punching 1, be provided on protruding portion 14 presetting Position hole 13；It is provided with connecting hole 12 on stator punching 1, presets the distance between location hole 13 and 1 geometric center of stator punching Greater than the distance between connecting hole 12 and 1 geometric center of stator punching.Connecting hole 12 and default location hole 13 contribute to connect End cap, but do not use not instead of simultaneously, for being separately connected the end cap of different sizes and shapes.The advantages of structure is, no It needs to adapt to different end caps and redesigns processing stator punching 1, only needed when end cap changes using suitably connecting Hole or location hole are connect, processing cost is low, easily manufactured.

Difference between full-size A and full-size B is preferably 1 millimeter to 5 millimeters, specifically, 1 millimeter, 2 millimeters, 3 Millimeter and 5 millimeters be all than more preferably numerical value.This purpose of design being rectangle substantially of stator punching 1 is after rotation stacks The groove structure for ventilation is formed in side, so the difference between A and B does not need too greatly, to form convex-concave structure, increase Heat dissipation area.

It is illustrated in figure 4 the top view after stator punching 1 stacks, adjacent two panels stator punching 1, which is rotated by 90 °, to be stacked, in Fig. 4 Top edge and lower edge the sides of two of underlying stator punching 1 protrusions can be respectively seen；And because be located above Stator punching 1 blocks, and can't see side (left edge and the right of the two other recess of underlying stator punching 1 in Fig. 4 Edge).

It is illustrated in figure 5 the partial structural diagram of the main perspective after stator punching 1 stacks, stacks a piece of stator punching of successor The edge of piece 1 is compared to 1 convex or concave of adjacent sheet stator punching, and then the side wall of stator core forms the ventilation for ventilation Groove 2 is convenient for wind-cooling heat dissipating.In addition, wavelike structure increases the surface area of stator core side wall, radiating efficiency is higher.

Stator core is stacked together by many (>=3) stator punchings 1, along on from top to the direction of bottom end, Whole stator punchings 1 are successively rotated in a clockwise direction 90 ° and stack, or are successively rotated in the counterclockwise direction 90 ° and stack.

List is for forming and divulging information 2 this purpose of groove, and second stator punching 1 is relative to first 1 edge of stator punching Be rotated clockwise 90 °, third piece stator punching 1 relative to second stator punching 1 be rotated in the counterclockwise direction 90 °, Four stator punchings 1 are rotated in a clockwise direction 90 ° relative to third piece stator punching 1, and so on, the same energy of this structure Obtain good heat dissipation effect.Defect is, when the light sheet for being used to form stator punching 1 is in uneven thickness, this odd number The structure that the direct superposition of piece stator punching 1, even numbers piece stator punching 1 are rotated clockwise 90 ° of superpositions can be by the thickness of light sheet The amplification of uneven state is spent, leads to that finally obtained stator core is highly non-uniform, out-of-flatness.

Rotation stacks whole stator punchings 1 (clockwise or counterclockwise) in the same direction, forms helicoidal structure, can offset The situation in uneven thickness of light sheet, obtained stator core is more smooth, it is closer to be bonded between piece and piece.

Stator punching 1 is preferably the symmetrical shape of geometric center (such as rectangle) about itself, such multi-disc stator The stator core that punching 1 obtains after stacking is identical with the full-size in Y direction in X-direction, becomes square, shape is more Rule, occupied space are smaller.

Embodiment two:

The present embodiment discloses a kind of stator core, motor stator and switched reluctance drive.Stator core, motor stator It is the same as example 1 with the basic structure of switched reluctance drive, the difference is that: setting quantity (such as two panels, three pieces, five Piece, ten etc.) stator punching 1 directly stack after form one group of structure, be rotated by 90 ° and stacked as unit of group.It is any after stacking The edge of piece stator punching 1 forms air duct in the side wall of stator core compared to 1 convex or concave of stator punching of adjacent sets Slot 2 improves radiating efficiency.

It is rotated by 90 ° as unit of group and stacks stator punching 1, intensity is bigger in edge, and side is not easy to damage because of shock Bad, the service life is longer.

Note that the technical principle that above are only the preferred embodiment of the utility model and used.Those skilled in the art It will be appreciated that the utility model is not limited to specific embodiment described here, it is able to carry out for a person skilled in the art various Apparent variation is readjusted and is substituted without departing from the protection scope of the utility model.Therefore, although by implementing above Example is described in further detail the utility model, but the utility model is not limited only to above embodiments, is not taking off It can also include more other equivalent embodiments in the case where from the utility model design, and the scope of the utility model is by institute Attached scope of the claims determines.

Claims (10)

1. a kind of stator core, including the multiple groups stator punching (1) stacked, stator punching described in every group (1) includes a piece of described Stator punching (1) or multi-disc stack the identical stator punching (1) in direction, which is characterized in that the every stator punching (1) Full-size A along its length and full-size B in the width direction are unequal, and stator punching described in two adjacent groups (1) is folded It puts direction and differs 90 °, form ventilation groove (2) in the side wall of the stator core.

2. stator core according to claim 1, which is characterized in that edge is on from top to the direction of bottom end, described in whole Stator punching (1) is rotated by 90 ° in the same direction to be stacked.

3. stator core according to claim 1, which is characterized in that between the full-size A and the full-size B Difference be 1 millimeter to 5 millimeters.

4. stator core according to any one of claim 1 to 3, which is characterized in that the stator punching (1) is about certainly The geometric center of body is symmetrical, and the stator core that stator punching described in multi-disc (1) obtains after stacking is in length direction and width Full-size on direction is identical.

5. stator core according to any one of claim 1 to 3, which is characterized in that the stator punching (1) is rectangular Shape is formed with locating notch (11) between the long side and short side being connected.

6. stator core according to claim 5, which is characterized in that whole described on the every stator punching (1) Locating notch (11) is located on the same circle.

7. stator core according to any one of claim 1 to 3, which is characterized in that be arranged on the stator punching (1) There are connecting hole (12) and at least one default location hole (13), the default location hole (13) and the stator punching (1) geometry The distance between center is greater than the distance between the connecting hole (12) and the stator punching (1) geometric center.

8. stator core according to claim 7, which is characterized in that be formed in the edge of the stator punching (1) Protruding portion (14), the default location hole (13) are arranged on the protruding portion (14).

9. a kind of motor stator, including stator winding (3), which is characterized in that further include such as any one of claims 1 to 8 The stator core, the stator winding (3) are wrapped in the stator core.

10. a kind of switched reluctance drive, including rotor, which is characterized in that further include motor stator as claimed in claim 9 Son, the rotor are set in the motor stator.