CN220492729U - Layered winding type slotless motor winding structure - Google Patents

Abstract

The utility model discloses a layered winding type slotless motor winding structure which comprises a coil winding, wherein the coil winding comprises a first phase coil, a second phase coil and a third phase coil, the first phase coil, the second phase coil and the third phase coil are sequentially arranged from inside to outside, and the first phase coil, the second phase coil and the third phase coil are respectively and independently wound and formed. Compared with the prior art, the motor winding device can solve the problems of poor position precision and poor motor effect caused by easy dislocation of the existing motor winding.

Description

Layered winding type slotless motor winding structure

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a layered winding type slotless motor winding structure.

Background

In a conventional brushless permanent magnet motor, a stator core has teeth and slots, as shown in fig. 1, and a brushless slotless permanent magnet motor, in which the stator core has no teeth and slots, is ring-shaped, as shown in fig. 3, and such slotless motor is also referred to as a "coreless motor". The hollow cup motor is strictly used for a permanent magnet brush motor, and the coil of the hollow cup motor is hollow cup-shaped. The copper wire of the conventional brushless motor surrounds the teeth, winds into the slots, and the winding of the brushless slotless motor is only self-integrated and then is adhered to the inner wall of the annular iron core. Windings of slotless motors can be currently classified into two main categories, namely "oblique winding" and "parallel winding". By oblique winding, it is meant that the coil face is at an angle to the rotor and the rotor passes through the coil, as shown in fig. 5. Parallel winding means that the coil is circular arc shaped, the coil is "parallel" to the rotor axis direction, as shown in fig. 6. At present, there are two modes of directly winding coils, namely, a single coil is independently wound into an arc shape or is firstly wound on a plane and then extruded into an arc shape, as shown in fig. 7, and then is spliced together into an integral cylinder shape, as shown in fig. 9, and secondly, the single coil is integrally wound on a tool, or is wound into an arc shape, taken down and then is wound into a cylinder shape, as shown in fig. 11, in any mode, each coil is overlapped to adjacent coils in a wave mode one by one from the axial direction, one half of each coil is arranged on the outer side of a front coil, the other half of each coil is arranged on the inner side of a rear coil, as shown in fig. 10, one half of each coil is arranged on the outer side of a coil A, and the other half of each coil is arranged on the inner side of a coil E.

The two modes of parallel winding coils have defects, single coils are wound and need to be shaped and spliced, so that time is consumed, the splicing position is high in accuracy, the splicing difficulty is high, and the cost is high; the whole plane is wound and then is rolled into a cylinder, the wire diameter cannot be too thick, the coil is not formed, or the multiple wires are wound together and are more difficult to coil, in addition, copper wires are easy to move in the process of winding, and particularly the multiple wires are wound simultaneously and are easier to misplace in the process of winding, so that the position precision is poor and the motor effect is poor.

Disclosure of Invention

The utility model aims at: in order to solve the problems of poor position precision and poor motor effect caused by easy dislocation of winding of the existing motor, the layered winding type slotless motor winding structure is provided.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a layering coiling formula slotless motor winding structure, its includes the coil winding, the coil winding includes first phase coil, second phase coil and third phase coil, first phase coil the second phase coil with the third phase coil is arranged in proper order from interior to exterior, first phase coil the second phase coil with the shaping is independently wound to the third phase coil each.

As a further description of the above technical solution:

the first phase coil, the second phase coil, and the third phase coil each include at least one coil.

As a further description of the above technical solution:

the number of the coils is two, and the two coils are symmetrically arranged.

As a further description of the above technical solution:

the coil is composed of a single copper wire or a plurality of copper wires.

As a further description of the above technical solution:

and a self-adhesive layer is arranged on the copper wire.

As a further description of the above technical solution:

the coil windings are circular or elliptical and polygonal in shape.

As a further description of the above technical solution:

and two ends of the coil winding are respectively contacted with the insulation end surfaces of the iron core.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows: the utility model adopts a layered winding structure, the coil winding is composed of a first phase coil, a second phase coil and a third phase coil, each phase is wound, the first phase coil is wound firstly, the second phase coil is wound outside the first phase coil, the third phase coil is wound outside the second phase coil, thus each phase coil is not interfered with each other, the first phase coil, the second phase coil and the third phase coil are integrally formed at one time, the winding of the first phase coil, the second phase coil and the third phase coil is not needed to be spliced like the winding of a single coil, and the winding of the first phase coil, the second phase coil and the third phase coil is not needed to be integrally wound and then wound into a cylinder, the positions of the coils are fixed, the winding is not misplaced, the winding is simple and easy, and the motor performance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a conventional motor stator core.

Fig. 2 is a schematic diagram of a winding structure of a conventional motor stator core.

Fig. 3 is a schematic structural view of a prior art slotless motor core.

Fig. 4 is a schematic diagram of a winding structure of a stator core of a slotless motor according to the prior art.

Fig. 5 is a schematic diagram of a prior art skewed coil winding.

Fig. 6 is a schematic diagram of a prior art parallel wound coil winding.

Fig. 7 is a perspective view of a single coil of the prior art.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a schematic structural view of a prior art single coil wound and spliced into a unitary cylinder.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a perspective view of a prior art whole plane wound coil.

Fig. 12 is a top view of fig. 11.

Fig. 13 is a schematic structural view of a winding structure of a layered winding type slotless motor according to the present utility model.

Fig. 14 is a top view of fig. 13.

Fig. 15 is a schematic view of a cylinder coil insert core.

Fig. 16 is a schematic diagram of the extrusion of coil ends to the core end face.

Legend description:

1. a coil winding; 2. a first phase coil; 3. a second phase coil; 4. a third phase coil; 5. a coil; 6. an iron core; 7. teeth; 8. a groove; 9. a rotor magnet; 10. a shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 13-16, the present utility model provides a technical solution: the utility model provides a layering coiling formula slotless motor winding structure, its includes coil winding 1, coil winding 1 includes first phase coil 2, second phase coil 3 and third phase coil 4, first phase coil 2, second phase coil 3 and third phase coil 4 arrange in proper order from inside to outside, first phase coil 2, second phase coil 3 and the shaping of coiling alone of third phase coil 4 each.

The first phase coil 2, the second phase coil 3 and the third phase coil 4 each comprise at least one coil 5. Each phase may include one coil, or may include two or more coils. Specifically, in this embodiment, two coils are symmetrically arranged, and two coils 5 are symmetrically arranged. In fig. 14, gaps are formed between the coils in the schematic diagram for clarity of view and convenience of description. The coils are in contact with each other when actually wound.

The coil 5 is made of a single copper wire or a plurality of copper wires.

And a self-adhesive layer is arranged on the copper wire. The coil can be well bonded while being wound.

The coil winding 1 is circular or elliptical and polygonal in shape.

As shown in fig. 15 and 16, both ends of the coil winding 1 are respectively in end-face contact with the core insulation 6. The two ends of the coil can be extruded outwards in the radial direction and even can be contacted with the insulating end face of the iron core, so that the length space occupied by the coil is reduced, and the length of the motor can be correspondingly shortened.

The winding steps of the winding structure of the layered winding type slotless motor are as follows:

s1: manufacturing a cylindrical tool, and manufacturing a coil position fixing piece on the tool;

s2: layering and winding a first phase coil 2, a second phase coil 3 and a third phase coil 4 on a fixture to form a coil winding 1;

s3: taking the coil winding 1 out of the fixture;

s4: the coil winding 1 is inserted into the core 6:

s5: shaping, namely extruding the end head of the coil winding 1 outwards to reduce the length of the end head;

s6: and welding, namely connecting outgoing lines according to design requirements.

Step S2 includes the steps of:

s21: winding a coil A and a coil B of a first phase coil 2;

s22: winding coils C and D of the second phase coil 3 again;

s23: finally, the coils E and F of the third phase coil 4 are wound.

The winding of the coil is from inside to outside, but the phase sequence is not necessarily from inside to outside, and can be defined according to actual requirements.

Working principle: the stator winding of the slotless motor in the utility model has three phases, namely a first phase coil, a second phase coil and a third phase coil, and each phase consists of two groups of coils which at least comprise one coil and are usually symmetrical in position. The three-phase position needs to form an electrical angle of 120 degrees; the coils in the figures are illustrated by way of example with four poles magnets, and other pole numbers can be similarly deduced. The utility model adopts a layered winding structure, the coil winding is composed of a first phase coil, a second phase coil and a third phase coil, each phase is wound, the first phase coil is wound firstly, the second phase coil is wound outside the first phase coil, the third phase coil is wound outside the second phase coil, thus each phase coil is not interfered with each other, the first phase coil, the second phase coil and the third phase coil are integrally formed at one time, the winding of the first phase coil, the second phase coil and the third phase coil is not needed to be spliced like the winding of a single coil, and the winding of the first phase coil, the second phase coil and the third phase coil is not needed to be integrally wound and then wound into a cylinder, the positions of the coils are fixed, the winding is not misplaced, the winding is simple and easy, and the motor performance is improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a layering coiling formula slotless motor winding structure, its characterized in that includes coil winding (1), coil winding (1) include first phase coil (2), second phase coil (3) and third phase coil (4), first phase coil (2), second phase coil (3) with third phase coil (4) are arranged in proper order from interior to exterior, first phase coil (2), second phase coil (3) with third phase coil (4) are each coiling shaping alone.

2. A layered wound slotless motor winding structure according to claim 1 characterized in that the first phase coil (2), the second phase coil (3) and the third phase coil (4) each comprise at least one coil (5).

3. A layered wound slotless motor winding structure according to claim 2 wherein the number of coils is two and the two coils (5) are symmetrically arranged.

4. A layered wound slotless motor winding structure according to claim 2 wherein the coil (5) is formed by a single copper wire or a plurality of copper wires.

5. The layered winding type slotless motor winding structure of claim 4 wherein the copper wire is provided with a self-adhesive layer.

6. A layered wound slotless motor winding structure according to claim 1 characterized in that the coil winding (1) is circular or elliptical and polygonal in shape.

7. A layered wound slotless motor winding structure according to claim 1, characterized in that both ends of the coil winding (1) are respectively in end-face contact with the core insulation (6).