CN113595295B - Motor stator - Google Patents
Motor stator Download PDFInfo
- Publication number
- CN113595295B CN113595295B CN202110886324.XA CN202110886324A CN113595295B CN 113595295 B CN113595295 B CN 113595295B CN 202110886324 A CN202110886324 A CN 202110886324A CN 113595295 B CN113595295 B CN 113595295B
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- Prior art keywords
- phase conductor
- stator
- conductors
- stator core
- clamping grooves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
Abstract
The invention discloses a motor stator which comprises an annular stator core and a stator winding, wherein a plurality of clamping grooves are formed in the inner side surface of the stator core in parallel along the radial direction, the clamping grooves are spaced at equal intervals in the circumferential direction of the stator core, the stator winding comprises three single-phase conductor components and zero lines connected with the three single-phase conductor components, the middle parts of the three single-phase conductor components are sequentially positioned in the adjacent clamping grooves, two ends of each single-phase conductor component are positioned outside the clamping grooves and are respectively spiral along the circumferential direction of the stator core, two ends of each single-phase conductor component are arranged in a spiral mode in a staggered mode along the circumferential direction of the stator core, and a first leading-out connector is arranged on each single-phase conductor component and is used for connecting the single-phase conductor components with an external power line. The motor stator provided by the invention simplifies the structure of the stator winding and improves the processing efficiency of the stator winding.
Description
Technical Field
The invention relates to the technical field of motors for new energy automobiles, in particular to a motor stator.
Background
The motor is used as a driving device for the new energy automobile, the motor has the function of driving wheels to rotate, when the motor is connected with current, the current in a stator winding of the motor and a magnetic field on the rotor act to generate driving torque for driving the rotor to rotate, and therefore the wheels are driven to rotate.
Because a motor used by a new energy automobile is generally connected with a larger current, the current carrying capacity of a stator winding in the motor needs to be increased; the existing stator winding increases the cross-sectional area of the stator winding by increasing the parallel connection number of the windings so as to increase the current carrying capacity, and the stator winding is usually formed by winding a plurality of layers of copper wires, so that the winding structure of the copper wires in the existing stator winding is more complex, and the processing efficiency of the stator winding is low.
Disclosure of Invention
The invention aims to provide a motor stator, which simplifies the structure of a stator winding and improves the processing efficiency of the stator winding.
The technical scheme adopted by the motor stator disclosed by the invention is as follows:
the utility model provides a motor stator, a plurality of draw-in groove has been seted up side by side along radial direction to stator core's inboard surface, a plurality of draw-in groove separates with equidistant on stator core's circumferencial direction, stator winding includes three single-phase conductor subassembly to and the zero line that links to each other with three single-phase conductor subassembly, the middle part of three single-phase conductor subassembly is located adjacent draw-in groove in proper order, the both ends of single-phase conductor subassembly are located outside the draw-in groove, the both ends of single-phase conductor subassembly are the spiral respectively along stator core's circumferencial direction, the both ends of three single-phase conductor subassembly are along stator core's circumferencial direction with spiral mode staggered arrangement, be equipped with first leading-out joint on the single-phase conductor subassembly, first leading-out joint is used for single-phase conductor subassembly and external power cord to link to each other.
Preferably, the unidirectional conductor assembly comprises a first connector, a second leading-out connector and two single-phase conductor combinations, the two single-phase conductor combinations are connected through the first connector, the two single-phase conductor combinations are respectively connected with the first leading-out connector and the second leading-out connector, the second leading-out connector is connected with a zero line, the middle parts of the two single-phase conductor combinations are sequentially located in adjacent clamping grooves, two ends of each single-phase conductor combination are located outside the clamping grooves, two ends of each single-phase conductor combination are respectively spiral along the circumferential direction of the stator core, and two ends of each two single-phase conductor combinations are arranged in a spiral mode in a staggered mode along the circumferential direction of the stator core.
Preferably, the single-phase conductor combination comprises a second connecting body and two single-phase conductors, and the two single-phase conductors are connected through the second connecting body.
Preferably, the single-phase conductor includes a plurality of first conductors and a plurality of second conductors located between the first conductors, the number of the second conductors is one less than the number of the first conductors, the first conductors include two first connecting portions and a first bent portion located between the two first connecting portions, the second conductors include two second connecting portions and a second bent portion located between the two second connecting portions, the second conductors are connected to the first connecting portions of two adjacent first conductors through the two second connecting portions, and the first bent portions and the second bent portions are V-shaped in a vertical direction and S-shaped in a horizontal direction.
As a preferred scheme, one end of the first bending portion is provided with a first protrusion, one side of at least one of the second connecting portions is provided with a second protrusion, and the first protrusion and the second protrusion respectively abut against two ends of the stator core.
Preferably, the number of the card slots is six times that of the first conductors, and the first connecting parts are located in the card slots.
Preferably, the width of the end of the first bending part provided with the first protrusion is larger than the width of the end far away from the first protrusion, and the width of the end of the second bending part close to the second protrusion is larger than the width of the end far away from the second protrusion.
Preferably, at least two of the first connecting bodies are provided with third bending parts, and the third bending parts are used for yielding among the three first connecting bodies.
Preferably, the zero line is provided with three first pins, a first notch is formed in the end of each first pin, and the second leading-out connector is located in the first notch and is in contact with the first pins.
As a preferred scheme, two second pins are arranged on the first connecting body, second notches are formed in the end portions of the second pins, and the second pins are connected with the first connecting portion through the second notches.
The motor stator disclosed by the invention has the beneficial effects that: because stator core's inboard surface has seted up a plurality of draw-in groove along radial direction side by side, and a plurality of draw-in groove separates with equidistant on stator core's circumferencial direction, three single-phase conductor subassembly imbeds in the adjacent draw-in groove in proper order after, three single-phase conductor subassembly's both ends are with spiral mode staggered arrangement along stator core's circumferencial direction, thereby satisfying under stator winding's the unchangeable condition of its cross sectional area, only need with three single-phase conductor subassembly imbed in the draw-in groove in proper order can, compare for the layering winding copper wire on stator core, stator winding's structure has been simplified, stator winding's machining efficiency has been improved.
Drawings
Fig. 1 is a schematic structural diagram of a motor stator according to the present invention.
Fig. 2 is a schematic structural view of a stator winding of a stator of an electric machine according to the present invention.
Fig. 3 is a schematic structural diagram of a stator core of a motor stator according to the present invention.
Figure 4 is a schematic view of the neutral wire of the stator of an electric machine of the present invention.
Fig. 5 is a schematic view of a single phase conductor assembly of a stator of an electric machine according to the present invention.
Fig. 6 is a schematic view of a first connection body of a stator of an electric machine according to the invention.
Fig. 7 is a schematic structural view of a single-phase conductor assembly of a stator of an electric machine according to the present invention.
Fig. 8 is a schematic view of the structure of a single-phase conductor of a stator of an electric machine according to the invention.
Fig. 9 is a schematic view of a first conductor of a stator of an electric machine of the present invention.
Figure 10 is a schematic view of a second conductor of a stator of an electric machine of the invention.
Fig. 11 is a schematic view of a second connection body of a stator of an electric machine according to the invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1 to 11, the stator includes an annular stator core 10 and a stator winding 20, a plurality of slots 11 are formed in parallel on an inner surface of the stator core 10 along a radial direction, and the slots 11 are spaced at equal intervals in a circumferential direction of the stator core 10. The stator winding 20 includes three single-phase conductor assemblies 21 and a zero line 22 connected to the three single-phase conductor assemblies 21, the middle portions of the three single-phase conductor assemblies 21 are sequentially located in adjacent slots 11, for example, when the stator core 10 has 9 slots 11, when a first single-phase conductor assembly 21 is sequentially located in a first slot 11, a fourth slot 11 and a seventh slot 11, a second single-phase conductor assembly 21 is sequentially located in a second slot 11, a fifth slot 11 and an eighth slot 11, a third single-phase conductor assembly 21 is sequentially located in a third slot 11, a sixth slot 11 and a ninth slot 11, two ends of the first single-phase conductor assembly 21 are located outside the slots 11, two ends of the single-phase conductor assembly 21 are respectively spiral in the circumferential direction of the stator core 10, two ends of the three single-phase conductor assemblies 21 are arranged in a spiral manner in a staggered manner in the circumferential direction of the stator core 10, a first leading-out connector 23 is disposed on the single-phase conductor assembly 21, and the three single-phase conductor assemblies 21 are respectively connected to a power line of an automobile through three first leading-out connectors 23.
Because only need imbed three single-phase conductor subassembly 21 back in proper order in the draw-in groove 11 of stator core 10, accomplished stator winding 20's wire winding promptly, the both ends of three single-phase conductor subassembly 21 are along stator core 10's circumferencial direction with spiral mode staggered arrangement, have guaranteed that stator winding 20's cross sectional area does not reduce to compare for the layering winding copper wire on stator core 11, simplified stator winding 20's structure, improved stator winding 20's machining efficiency.
The unidirectional conductor assembly 21 comprises a first connecting body 211, a second outgoing connector 212 and two single-phase conductor combinations 213, the two single-phase conductor combinations 213 are connected through the first connecting body 211, the two single-phase conductor combinations 213 are respectively connected with the first outgoing connector 23 and the second outgoing connector 212, the second outgoing connector 212 is connected with the zero line 22, the middle parts of the two single-phase conductor combinations 213 are sequentially located in the adjacent clamping grooves 11, the two ends of the single-phase conductor combination 213 are located outside the clamping grooves 11, the two ends of the single-phase conductor combination 212 are respectively spiral in the circumferential direction of the stator core 10, and the two ends of the two single-phase conductor combinations 213 are arranged in a spiral mode in a staggered mode in the circumferential direction of the stator core 10. By providing two single-phase conductor combinations 213, the cross-sectional area of the stator winding 20 is increased.
The single-phase conductor assembly 213 includes a second connector 2131 and two single-phase conductors 2132, and the two single-phase conductors 2132 are connected to each other by the second connector 2131. The single-phase conductor 2132 includes a plurality of first conductors 21321 and a plurality of second conductors 21322 located between the first conductors 21321, the number of the second conductors 21322 is one less than the number of the first conductors 21321, the first conductors 21321 include two first connecting portions 213211 and first bent portions 213212 located between the two first connecting portions 213211, the second conductors 21322 include two second connecting portions 213221 and second bent portions 213222 located between the two second connecting portions 213221, and the second conductors 21322 are connected to the first connecting portions 213211 of two adjacent first conductors 21321 through the two second connecting portions 213221. The second conductor 21322 is welded to the first connecting portions 213211 of two adjacent first conductors 21321 by two second connecting portions 213221. The single-phase conductor assembly 213 may be made of aluminum.
Since the first curved portions 213212 and the second curved portions 213222 are V-shaped in the vertical direction and S-shaped in the horizontal direction, when the two single-phase conductors 2132 are arranged in a staggered manner in a spiral manner, the two first curved portions 213212 cross each other in the vertical and horizontal directions, the two second curved portions 213222 cross each other in the vertical and horizontal directions, the four first connecting portions 213211 are parallel in pairs, and the single-phase conductor combination 213 forms a circular ring shape in a sinusoidal manner.
Because the unidirectional conductor assembly 21 includes two single-phase conductor assemblies 213, when the two single-phase conductor assemblies 213 are combined together, one of the conductor assemblies 213 rotates six card slots 11 relative to the other conductor assembly 213 with the center of the circular ring-shaped stator core 10 as the center, the first connecting portion 213211 of one of the conductor assemblies 213 is juxtaposed with the first connecting portion 213211 of the other conductor assembly 213, and the second conductor 21322 of one of the conductor assemblies 213 is rhombus-shaped with the first conductor 21321 of the other conductor assembly 213 in the vertical direction.
When the three single-phase conductor assemblies 21 are combined together, with the first single-phase conductor assembly 21 as a reference, the second single-phase conductor assembly 21 rotates two slots 11 with respect to the first conductor assembly 213 around the center of the circular stator core 10, the third single-phase conductor assembly 21 rotates four slots 11 with respect to the first conductor assembly 213 around the center of the circular stator core 10, the lower ends of the three single-phase conductor assemblies 21 are spirally and alternately wound together through the first bending portion 213212, and the upper ends of the three single-phase conductor assemblies 21 are spirally and alternately wound together through the second bending portion 213222, so that the three single-phase conductor assemblies 21 are combined side by side, and then the first conductor 21321 and the second conductor 21322 of the three single-phase conductor assemblies 21 are respectively and correspondingly welded together.
One end of the first bending portion 213212 is provided with a first protrusion 21323, one side of at least one of the second connecting portions 213221 is provided with a second protrusion 21324, and when the first connecting portion 213211 is located in the slot 11, the second protrusion 21324 and the first protrusion 21323 respectively abut against the upper end and the lower end of the stator core 10, so that the single-phase conductor assembly 21 can be prevented from falling off from the stator core 10.
For example, when the second first connector 211 and the third first connector 211 of the three first connectors 211 have the third bent portion 2111 and the three single-phase conductor assemblies 21 are combined together, the second first connector 211 can avoid the first connector 211 through the third bent portion 2111, and the third first connector 211 can also avoid the second first connector 211 through the third bent portion 2111, so that the three first connectors 211 do not interfere with each other.
Three first pins 221 are arranged on the zero line 22, a first notch 2211 is formed in the end portion of each first pin 221, and when the first pins 221 are welded with the second lead-out connectors 212 through the first notches 2211, the welding firmness is improved.
Two second pins 2112 are arranged on the first connecting body 211, second notches 21121 are formed in the end portions of the second pins 2112, and when the second pins 2112 are welded with the first connecting portion 213211 through the second notches 21121, the welding firmness is improved.
The second connecting body 2131 includes two third connecting portions 21311 and a third bent portion 21312 located between the two third connecting portions 21311, and the second connecting body 2131 is connected to the first connecting portions 213211 of two adjacent first conductors 21321 via the two third connecting portions 21311. The third bent portions 21312 are V-shaped in the vertical direction and S-shaped in the horizontal direction, and when the two single-phase conductors 2132 are arranged alternately in a spiral manner, the two third bent portions 21312 cross each other in the vertical and horizontal directions.
In the above scheme, two ends of the single-phase conductor assembly 21 are respectively in a spiral shape along the circumferential direction of the stator core 10, when the three single-phase conductor assemblies 21 are combined together, the two ends of the single-phase conductor assemblies 21 are arranged in a staggered manner along the circumferential direction of the stator core 10, and the three single-phase conductor assemblies 21 are respectively connected with a power line of an automobile through the three first leading-out connectors 23, so that the structure of the stator winding 20 is simplified and the processing efficiency of the stator winding 20 is improved compared with the case that copper wires are wound on the stator core 11 in a layered manner under the condition that the cross-sectional area of the stator winding 20 is not reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A motor stator comprises an annular stator core and a stator winding, wherein a plurality of clamping grooves are formed in the inner side surface of the stator core in the radial direction side by side, the clamping grooves are spaced at equal intervals in the circumferential direction of the stator core, the stator winding is characterized by comprising three single-phase conductor assemblies and zero lines connected with the three single-phase conductor assemblies, the middle parts of the three single-phase conductor assemblies are sequentially located in adjacent clamping grooves, two ends of each single-phase conductor assembly are located outside the clamping grooves, two ends of each single-phase conductor assembly are respectively spiral in the circumferential direction of the stator core, two ends of each single-phase conductor assembly are spirally staggered in the circumferential direction of the stator core, a first leading-out connector is arranged on each single-phase conductor assembly and used for connecting the single-phase conductor assemblies with an external power line, each single-phase conductor assembly comprises a first connecting body, a second leading-out connector and two single-phase conductor combinations, the two single-phase conductor combinations are connected through the first connecting body, the two single-phase conductor clamping grooves are respectively connected with the first leading-out connector and the second leading-out connector, the two single-phase conductor clamping grooves are sequentially connected with the two ends of each single-phase conductor assembly, the stator core is arranged in the circumferential direction of the stator core, and the two single-phase conductor assemblies are respectively arranged in the circumferential direction of the stator core.
2. The motor stator of claim 1, wherein the single-phase conductor assembly comprises a second connecting body and two single-phase conductors connected by the second connecting body.
3. The motor stator according to claim 2, wherein the single-phase conductor includes a plurality of first conductors and a plurality of second conductors disposed between the first conductors, the number of the second conductors is one less than the number of the first conductors, the first conductors include two first connecting portions and a first bent portion disposed between the two first connecting portions, the second conductors include two second connecting portions and a second bent portion disposed between the two second connecting portions, the second conductors are connected to the first connecting portions of two adjacent first conductors through the two second connecting portions, and the first bent portions and the second bent portions are V-shaped in a vertical direction and S-shaped in a horizontal direction.
4. The stator for an electric motor according to claim 3, wherein one end of the first bent portion is provided with a first protrusion, one side of at least one of the second connecting portions is provided with a second protrusion, and the first protrusion and the second protrusion are respectively abutted against both ends of the stator core.
5. The electric machine stator of claim 3, wherein the number of card slots is six times the number of first conductors, the first connection portions each being located within a card slot.
6. The stator of claim 4, wherein the first curved portion has a width at an end of the first curved portion having the first projection larger than a width at an end of the second curved portion remote from the first projection, and the second curved portion has a width at an end of the second curved portion remote from the second projection larger than a width at an end of the second curved portion remote from the second projection.
7. The stator according to any one of claims 1 to 6, wherein at least two of the first connection bodies have a third bending portion for abdicating between three of the first connection bodies.
8. The motor stator according to any one of claims 1 to 6, wherein three first pins are provided on the neutral wire, a first notch is formed at an end of each first pin, and the second lead-out connector is located in the first notch and contacts with the first pins.
9. The motor stator according to any one of claims 3 to 6, wherein the first connecting body is provided with two second pins, the end of each second pin is provided with a second notch, and the second pins are connected with the first connecting part through the second notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110886324.XA CN113595295B (en) | 2021-08-03 | 2021-08-03 | Motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110886324.XA CN113595295B (en) | 2021-08-03 | 2021-08-03 | Motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113595295A CN113595295A (en) | 2021-11-02 |
| CN113595295B true CN113595295B (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110886324.XA Active CN113595295B (en) | 2021-08-03 | 2021-08-03 | Motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113595295B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3484407B2 (en) * | 2000-11-24 | 2004-01-06 | 三菱電機株式会社 | AC generator for vehicles |
| JP4546112B2 (en) * | 2004-03-02 | 2010-09-15 | 日立オートモティブシステムズ株式会社 | Rotating electric machine |
| JP2009033832A (en) * | 2007-07-25 | 2009-02-12 | Aisin Aw Co Ltd | Stator for motor |
| JP5195403B2 (en) * | 2008-12-25 | 2013-05-08 | トヨタ自動車株式会社 | Stator and coil cage |
| JP5762634B2 (en) * | 2011-07-07 | 2015-08-12 | テクノマティック・ソシエタ・ペル・アチオニＴｅｃｎｏｍａｔｉｃ Ｓ．Ｐ．Ａ． | Electrical machine stator |
| JP2020124053A (en) * | 2019-01-31 | 2020-08-13 | アイシン・エィ・ダブリュ株式会社 | Manufacturing method of armature |
| CN212012282U (en) * | 2020-05-28 | 2020-11-24 | 重庆宗申电动力科技有限公司 | Stator module and motor |
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2021
- 2021-08-03 CN CN202110886324.XA patent/CN113595295B/en active Active
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