CN209948824U - Motor stator and permanent magnet motor - Google Patents
Motor stator and permanent magnet motor Download PDFInfo
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- CN209948824U CN209948824U CN201920754461.6U CN201920754461U CN209948824U CN 209948824 U CN209948824 U CN 209948824U CN 201920754461 U CN201920754461 U CN 201920754461U CN 209948824 U CN209948824 U CN 209948824U
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- insulating support
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Abstract
The utility model provides a motor stator and permanent-magnet machine, motor stator includes three-phase winding and insulating support, insulating support has the through-hole, the position phase-match of the position of through-hole and the tail wire of first phase winding, insulating support has a location portion, location portion corresponds the setting of second phase winding, and is located the second phase winding and is close to third phase winding end, and the tail wire of first phase winding passes the through-hole is followed insulating support's lateral wall winding is in location portion to and the tail wire of second phase winding and the tail wire of third phase winding and connect and form a neutral point. Due to the through holes and the positioning parts, the tail wire of the first phase wire group can be connected in parallel with the tail wire of the second phase wire group and the tail wire of the third phase wire group along the outer side wall of the insulating support at fixed points without passing through the upper part of the second phase wire group, so that the problems that the tail wire of the existing motor stator is in out-of-phase contact and the connected neutral point is difficult to fix are solved.
Description
Technical Field
The utility model relates to the technical field of electric machines, in particular to motor stator and permanent-magnet machine.
Background
The permanent magnet motor has the advantages of large power density, small volume and high efficiency, and is widely applied to various fields, wherein the efficiency of the concentrated winding type permanent magnet synchronous motor is superior to that of the distributed winding type motor due to the characteristics of small winding end part and the like. The stator assembly of the existing concentrated winding type permanent magnet motor comprises four parts, namely a stator core, a three-phase winding, a leading-out wire and an insulating bracket.
The head ends of the three-phase windings are respectively connected with the outgoing lines, and the tail ends of the three-phase windings are connected together in parallel through welding, crimping and other processes. However, the tail wire of the winding of the current concentrated winding type motor has the problems that the neutral points which are in out-of-phase contact and connected in parallel are difficult to fix and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a motor stator and permanent-magnet machine to there is out of phase contact in the tail-wire of solving current motor stator, and the neutral point of concatenation is difficult to fixed problem.
In order to solve the technical problem, the utility model provides an electric motor stator, electric motor stator includes:
the three-phase winding comprises a first phase winding, a second phase winding and a third phase winding which are sequentially arranged;
the insulating support is arranged at one end of the three-phase winding and exposed out of the three-phase winding, the insulating support is provided with a through hole, the position of the through hole is matched with the position of a tail wire of the first-phase winding, the insulating support is provided with a positioning part, the positioning part is arranged corresponding to the second-phase winding and is positioned at the end, close to the third-phase winding, of the second-phase winding, and the tail wire of the first-phase winding penetrates through the through hole to be wound on the positioning part along the outer side wall of the insulating support and is connected with the tail wire of the second-phase winding and the tail wire of the third-phase winding in parallel to form a neutral point.
Optionally, in the motor stator, the positioning portion is in a cylindrical shape.
Optionally, in the motor stator, the positioning portions are distributed along an axial direction of the insulating support, or are distributed perpendicular to the axial direction of the insulating support.
Optionally, in the motor stator, the width of the positioning portion is 3mm to 15 mm.
Optionally, in the motor stator, the through hole is square, circular or kidney-shaped.
Optionally, in the motor stator, the area of the through hole is not less than 0.3mm2。
Optionally, in the motor stator, the number of windings of the tail wire of the first phase winding on the positioning portion is at least 1.
Optionally, in the motor stator, the motor stator further includes a stator core, and the stator core is disposed around the three-phase winding.
Optionally, motor stator in, the stator core inner wall have a plurality of edges stator core circumference equidistance is arranged and is used for holding three-phase winding's slot, each the opening orientation of slot the center of stator core motor stator in, the tail-wire of first phase winding, the tail-wire of second phase winding with the tail-wire of third phase winding is drawn forth by three continuous arrangement's slot respectively.
The utility model also provides a permanent-magnet machine, a serial communication port, permanent-magnet machine includes as above motor stator.
In the motor stator and the permanent magnet motor provided by the utility model, the motor stator comprises a three-phase winding and an insulating support, and the three-phase winding comprises a first phase winding, a second phase winding and a third phase winding which are arranged in sequence; the insulation support is arranged at one end of the three-phase winding and exposed out of the three-phase winding, the insulation support is provided with a through hole, the position of the through hole is matched with the position of a tail wire of the first-phase winding, the insulation support is provided with a positioning part, the positioning part is arranged corresponding to the second-phase winding and is positioned at the end, close to the third-phase winding, of the second-phase winding, the tail wire of the first-phase winding penetrates through the through hole and is wound on the positioning part along the outer side wall of the insulation support, and the tail wire of the second-phase winding and the tail wire of the third-phase winding are connected in parallel to form a neutral point. Due to the through holes and the positioning parts, the tail wire of the first phase wire group can be connected in parallel with the tail wire of the second phase wire group and the tail wire of the third phase wire group along the outer side wall of the insulating support at a fixed point and without passing through the upper part of the second phase wire group, so that the problems that the tail wire of the existing motor stator is in out-of-phase contact and the connected neutral point is difficult to fix are solved.
Drawings
Fig. 1 is a schematic view of the overall structure of a stator of an electric motor according to a preferred embodiment of the present invention;
fig. 2 is a partial structural schematic view of a motor stator according to a preferred embodiment of the present invention;
wherein the reference numerals are as follows:
1-a motor stator; 11-a three-phase winding; 111-a first phase winding; 112-a second phase winding; 113-a third phase winding; 12-an insulating support; 121-a through hole; 122-a positioning section; 101-the tail of the first phase winding; 102-the tail of the second phase winding; 103-the tail of the third phase winding; 100-neutral point; 13-a stator core; 14-slot.
Detailed Description
The following describes the motor stator according to the present invention in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
Please refer to fig. 1 and fig. 2, wherein fig. 1 is a schematic diagram of an overall structure of a motor stator according to a preferred embodiment of the present invention, and fig. 2 is a schematic diagram of a partial structure of the motor stator according to the preferred embodiment of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a motor stator 1 including:
the three-phase winding 11 comprises a first phase winding 111, a second phase winding 112 and a third phase winding 113 which are sequentially arranged;
the insulating support 12 is disposed at one end of the three-phase winding 11 and exposes the three-phase winding 11, the insulating support 12 has a through hole 121, a position of the through hole 121 matches a position of the tail wire 101 of the first-phase winding, the insulating support 12 has a positioning portion 122, the positioning portion 122 is disposed corresponding to the second-phase winding 112 and is located at a position where the second-phase winding 112 is close to the third-phase winding 113, the tail wire 101 of the first-phase winding passes through the through hole 121 and is wound on the positioning portion 122 along an outer side wall of the insulating support 12, and the tail wire 102 of the second-phase winding and the tail wire 103 of the third-phase winding are connected in parallel to form a neutral point 100.
Since the tails of the three-phase windings of the stator of the three-phase winding motor need to be connected in parallel to form a neutral point, and the neutral point is generally arranged on the two-phase winding side, the tail of one phase winding needs to be led to the neutral point from a position relatively far away from the neutral point, and in this case, the neutral points which are in contact with each other in an out-of-phase mode and connected in parallel are difficult to fix.
Compared with the prior art, due to the through holes 121 and the positioning parts 122, the tail lines of the first phase line group can be connected in parallel with the tail lines 102 of the second phase line group and the tail lines 103 of the third phase line group along the outer side wall of the insulating support 12 at fixed points and without passing through the upper side of the second phase line group, so that the problems that the tail lines of the existing motor stator 1 are in out-of-phase contact and the connected neutral points are difficult to fix are solved.
With continued reference to fig. 1 and 2, the motor stator 1 provided in the present embodiment will be further described.
As shown in fig. 1, the tail wire of the first phase winding is preferably wound on the positioning portion for at least 1 turn, for example, 2 turns, 3 turns, etc., so as to ensure the stability of the neutral point. In addition, as shown in fig. 2, in the present embodiment, the positioning portion 122 is preferably in a column shape, and the width L of the positioning portion 122 is 3mm to 15mm, for example, 3mm, 5mm, 10mm, or 15mm, and the specific width of the positioning portion 122 is set according to the winding diameter, and the winding diameter is generally 0.4mm to 1.1mm, and when the winding diameter is relatively large, it is preferable to design the positioning portion 122 in a relatively wide range so as to facilitate winding of the winding tail wire.
Further, the positioning portions 122 may be distributed along the axial direction of the insulating support 12, or distributed perpendicular to the axial direction of the insulating support 12. In consideration of the difficulty of opening the mold and the convenience of the practical application, the present embodiment preferably has the positioning portions 122 distributed along the axial direction of the insulating support 12.
In addition, the through hole 121 may be square, circular or kidney-shaped, as shown in fig. 1 and 2, in this embodiment, the through hole 121 is preferably square, and the area of the through hole 121 is preferably not less than 0.3mm2For example, it may be 0.3mm2、0.5mm2、0.8mm2Or 1mm2And the like.
The motor stator 1 of the present embodiment further includes a stator core 13, and the stator core 13 is disposed around the three-phase winding 11. Generally, the number of each winding of the stator of the three-phase winding motor is a plurality, and the arrangement form is as follows: the first phase winding 111, the second phase winding 112, the third phase winding 113, the first phase winding 111, the second phase winding 112, and the third phase winding 113 … are sequentially and circularly arranged.
Correspondingly, the inner wall of the stator core 13 has a plurality of slots arranged at equal intervals along the circumferential direction of the stator core 13 for accommodating the three-phase winding 11, an opening of each slot faces the center of the stator core 13, the first phase winding 111, the second phase winding 112 and the third phase winding 113 are respectively arranged in one slot 14, and the tail wire 101 of the first phase winding, the tail wire 102 of the second phase winding and the tail wire 103 of the third phase winding are respectively led out from three slots 14 arranged in series.
The positions of the through hole 121 and the positioning portion 122 in this embodiment are further described below with reference to the slot 14.
Setting a first slot for leading out the tail wire 101 of the first phase winding, setting a second slot for leading out the tail wire 102 of the second phase winding, and setting a third slot for leading out the tail wire 103 of the third phase winding.
Because each slot for accommodating each winding has a certain width, for the first phase winding 111, the tail wire thereof may be led out from one side of the first slot far from the second slot, or from one side of the first slot near the second slot, and correspondingly, when the first phase winding 111 is led out from one side of the first slot far from the second slot, the through hole 121 may be disposed at one side of the first slot far from the second slot and does not exceed the range of the first slot, and when the first phase winding 111 is led out from one side of the first slot near the second phase winding 112, the through hole 121 may be disposed at one side of the first slot near the second slot and does not exceed the range of the first slot.
The tail wire 103 of the third phase winding may be disposed at a side of the third slot close to the second slot, or may be disposed at a side of the third slot far from the second slot, and the third phase winding 113 may not generate the problem of out-of-phase contact regardless of which side of the third slot the third phase winding is disposed. In general, in order to form a neutral point and avoid generating an out-of-phase contact, the tail line 102 of the second phase winding is disposed on a side of the second slot close to the third slot, and in view of this, in this embodiment, the positioning portion 122 is preferably disposed on a side of the second slot close to the third slot.
The process of forming the motor stator 1 of the present embodiment may be as follows:
(1) the first phase winding 111, the second phase winding 112 and the third phase winding 113 are sequentially arranged along the circumferential direction of the stator core 13, wherein a tail wire of the first phase winding 111 is led out from the first slot, a tail wire 102 of the second phase winding is led out from the second slot, a tail wire 103 of the third phase winding is led out from the third slot, and the tail wire 102 of the second phase winding is located on one side of the second slot, which is close to the third phase winding 113;
(2) arranging an insulating support 12 on a stator core 13, and exposing the first phase winding 111, the second phase winding 112, and the third phase winding 113, wherein a through hole 121 of the insulating support 12 is arranged corresponding to a tail wire 101 of the first phase winding, and a positioning portion 122 of the insulating support 12 is arranged corresponding to the second phase winding 112 and is located at an end of the second phase winding 112 close to the third phase winding 113;
(3) winding the tail wire of the first phase winding 111 on the positioning part 122 along the outer side wall of the insulating bracket 12 through the through hole 121;
(4) the tail wire 101 of the first phase winding, the tail wire 102 of the second phase winding and the tail wire 103 of the third phase winding are connected in parallel to form the neutral point 100.
The embodiment of the utility model provides a still provide a permanent-magnet machine, permanent-magnet machine includes one motor stator 1.
To sum up, the utility model provides a motor stator and permanent-magnet machine, the tail-wire that has solved current motor stator has out of phase contact to and the neutral point that connects in parallel is difficult to the fixed problem.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (10)
1. An electric machine stator, comprising:
the three-phase winding comprises a first phase winding, a second phase winding and a third phase winding which are sequentially arranged;
the insulating support is arranged at one end of the three-phase winding and exposed out of the three-phase winding, the insulating support is provided with a through hole, the position of the through hole is matched with the position of a tail wire of the first-phase winding, the insulating support is provided with a positioning part, the positioning part is arranged corresponding to the second-phase winding and is positioned at the end, close to the third-phase winding, of the second-phase winding, and the tail wire of the first-phase winding penetrates through the through hole to be wound on the positioning part along the outer side wall of the insulating support and is connected with the tail wire of the second-phase winding and the tail wire of the third-phase winding in parallel to form a neutral point.
2. The motor stator according to claim 1, wherein the positioning portion has a cylindrical shape.
3. The stator according to claim 2, wherein the positioning portions are distributed along an axial direction of the insulating support or are distributed perpendicular to the axial direction of the insulating support.
4. The motor stator according to claim 1 or 2, wherein the width of the positioning part is 3mm to 15 mm.
5. The motor stator of claim 1, wherein the through-holes are square, circular, or kidney-shaped.
6. The motor stator according to claim 1, wherein the area of the through-hole is not less than 0.3mm2。
7. The motor stator according to claim 1, wherein the number of windings of the tail wire of the first phase winding on the positioning portion is at least 1 turn.
8. The electric machine stator of claim 1, further comprising a stator core disposed around the three-phase winding.
9. The stator of claim 8, wherein the stator core inner wall has a plurality of slots arranged at equal intervals along the stator core circumference for receiving the three-phase windings, each slot has an opening facing the center of the stator core, and the tail wire of the first phase winding, the tail wire of the second phase winding, and the tail wire of the third phase winding are respectively led out from three slots arranged in series.
10. A permanent magnet electrical machine comprising an electrical machine stator according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920754461.6U CN209948824U (en) | 2019-05-23 | 2019-05-23 | Motor stator and permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920754461.6U CN209948824U (en) | 2019-05-23 | 2019-05-23 | Motor stator and permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209948824U true CN209948824U (en) | 2020-01-14 |
Family
ID=69133853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920754461.6U Active CN209948824U (en) | 2019-05-23 | 2019-05-23 | Motor stator and permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209948824U (en) |
-
2019
- 2019-05-23 CN CN201920754461.6U patent/CN209948824U/en active Active
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