CN216056550U - Use flat copper wire's aeroengine stator tip connection structure - Google Patents
Use flat copper wire's aeroengine stator tip connection structure Download PDFInfo
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- CN216056550U CN216056550U CN202120547337.XU CN202120547337U CN216056550U CN 216056550 U CN216056550 U CN 216056550U CN 202120547337 U CN202120547337 U CN 202120547337U CN 216056550 U CN216056550 U CN 216056550U
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Abstract
The utility model discloses an aviation motor stator end part connecting structure applying flat copper wires, wherein the aviation motor stator comprises a stator core and a stator winding, the stator winding is of a double-layer conductor structure, the section of the conductor is rectangular, different layers of the end part of the double-layer conductor are connected through brazing, the connection part of the double-layer winding conductor is sleeved together by a rectangular copper wire connecting pipe, one side, close to the core, of the rectangular copper wire connecting pipe is pressed by a wire pressing clamp, a uniform brazing filler metal space is reserved around the double-layer conductor on one side, far away from the core, of the rectangular copper wire connecting pipe, the brazing filler metal space can uniformly retain a brazing filler metal in the middle and around the copper wires during brazing, the brazing connection area and the brazing reliability are increased, and the conductivity and the stability of conductor connection are ensured.
Description
Technical Field
The utility model relates to an aviation motor stator structure, in particular to a connection structure of a flat copper wire aviation motor stator winding end part.
Background
The current aviation motor stator process adopting the flat copper wire is mainly applied to equipment such as a generator with high power density, a starter generator and the like. In the field of aviation motors with high requirements on power density, the flat copper wire can save the space occupied by winding insulation, and can improve the slot filling rate, so that the flat copper wire is a preferred scheme of stator windings of high-power-density and high-power aviation motors.
The motor stator adopting the flat copper wire is usually manufactured by a Hairpin process. The Hairpin process is generally divided into several steps of forming a flat copper wire conductor, inserting a formed winding into a motor stator, twisting a formed winding welding end and welding. During welding, need adopt the powder of lacquer that takes off to take off the flat copper line and need the welded partial insulation skin, weld all joints again, because copper is hot good conductor, heat during the welding can transmit to the conductor part that has the insulation skin fast, causes the conductor insulation damage, even the tip soaks insulating resin once more, also can't restore the insulating properties of tip completely, causes the motor reliability to descend.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an aviation motor stator end part connecting structure applying flat copper wires, wherein a stator winding is of a double-layer conductor structure, the section of each conductor is rectangular, different layers of the end part of each double-layer conductor are connected through brazing, the connection part of the conductors of the double-layer winding is sleeved together by a rectangular copper wire connecting pipe, one side, close to an iron core, of each rectangular copper wire connecting pipe is pressed by a wire pressing clamp, one side, far away from the iron core, of each rectangular copper wire connecting pipe is provided with a uniform brazing filler metal space around the double-layer conductor, the brazing filler metal space can uniformly retain the brazing filler metal in the middle and around the copper wires during brazing, the brazing connection area is increased, the brazing reliability is improved, and the conductivity and the stability of conductor connection are ensured.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the stator winding is of a double-layer conductor structure, the cross section of the double-layer conductor is rectangular, the joint of the conductors of the double-layer winding is sleeved together by a connecting pipe, and brazing filler is arranged between the connecting pipe and the conductors.
The connecting pipe is a rectangular connecting pipe with a rectangular section.
The connecting pipe is made of the same material as the stator end conductor, the cross section of the connecting pipe is rectangular, and the cross section size of the connecting pipe is larger than that of the double-layer end conductor.
The brazing filler is high-temperature soldering tin or silver-based brazing filler.
The specific connection mode of the conductor end part is as follows: and one half of the rectangular copper wire connecting pipe close to the iron core is compressed by using a crimping pliers, and one half of the rectangular copper wire connecting pipe far away from the iron core is filled with brazing filler.
Compared with the existing motor stator winding end part connecting structure, the utility model has the remarkable advantages and beneficial effects that:
1. the soldering process is adopted, so that the damage of the high temperature of welding to the insulation of the motor winding is avoided to the greatest extent;
2. the motor stator winding end connecting structure is simple, has good stability of mechanical connection and good conductivity of welding, is simple in technological process, and can improve the yield of windings.
3. The end part of the conductor adopts the connection form of the utility model, thus improving the assembly and welding efficiency and improving the structural strength of the end part of the winding.
Drawings
FIG. 1 is a schematic view of the stator structure of the motor of the present invention;
fig. 2 is a schematic view of the connection structure of the stator winding end of the motor.
Detailed Description
The specific implementation method of the utility model is as follows:
the motor stator adopting the flat copper wire is usually manufactured by a Hairpin process. The Hairpin process is generally divided into several steps of forming a flat copper wire conductor, inserting a formed winding into a motor stator, twisting a formed winding welding end and welding. During welding, need adopt the powder of lacquer that takes off to take off the flat copper line and need the welded partial insulation skin, weld all joints again, because copper is hot good conductor, heat during the welding can transmit to the conductor part that has the insulation skin fast, causes the conductor insulation damage, even the tip soaks insulating resin once more, also can't restore the insulating properties of tip completely, causes the motor reliability to descend.
In order to solve the problem, the utility model provides an aviation motor stator end part connecting structure applying flat copper wires, wherein a stator winding is of a double-layer conductor structure, the section of each conductor is rectangular, different layers of the end part of each double-layer conductor are connected through brazing, the connection part of the conductors of the double-layer winding is sleeved together by a rectangular copper wire connecting pipe, one side, close to an iron core, of each rectangular copper wire connecting pipe is pressed by a wire pressing clamp, a uniform brazing filler metal space is reserved around the double-layer conductor on one side, far away from the iron core, of each rectangular copper wire connecting pipe, the brazing filler metal space can uniformly reserve a brazing filler metal in the middle and around the copper wires during brazing, the brazing connecting area is increased, the brazing reliability is improved, and the conductivity and the stability of conductor connection are guaranteed.
The following describes an embodiment of the motor stator winding end connection structure in detail with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a motor stator of the utility model, the stator of the aero-motor comprises a stator core 1 and a stator winding 2, the core is provided with a plurality of stator slots in an inner hole, the stator winding 2 penetrates through the stator slots, and the stator winding 2 is composed of flat copper conductors.
Fig. 2 is a schematic view of a connection structure of a stator winding end of a motor, where the stator winding end is composed of two layers of conductors, the two layers of conductors need to be connected, the connection between the two layers of conductor ends is realized by a rectangular connection pipe, the first layer of conductor 21 is connected with the second secondary conductor 22 by a rectangular connection pipe 23, and the specific connection mode of the end between the first layer of conductor 21 and the second secondary conductor 22 is as follows: the end of the conductor 21 is connected to the short side of the end of the conductor 22, and the conductor 21 and the conductor 22 are connected by a rectangular connecting tube 23, preferably, the connecting tube 23 is made of red copper.
One side of the rectangular connecting pipe 23 close to the iron core is pressed by using a wire pressing pliers, one side far away from the iron core leaves a uniform brazing filler metal space around the conductor 21 and the conductor 22, and brazing is carried out in the reserved brazing filler metal space, wherein the brazing filler metal is high-temperature soldering tin or silver-based brazing filler metal.
The present example is an exemplary embodiment of the present invention, and should be understood as an exemplary example within the scope of the claims of the present invention, and has an instructive effect on those skilled in the art to implement the corresponding technical solution, but not a limitation to the present invention.
Claims (7)
1. The aviation motor stator end part connecting structure using the flat copper wire is characterized in that a stator winding is of a double-layer conductor structure, the cross section of the double-layer conductor is rectangular, the connecting part of the double-layer winding conductor is sleeved together by a connecting pipe, and brazing filler is arranged between the connecting pipe and the conductor.
2. The structure of claim 1, wherein the connecting tube is made of the same material as the end conductor of the double-layer conductor structure.
3. The structure of connecting ends of a stator of an aircraft electric motor using flat copper wires according to claim 1, wherein the connecting pipe is a rectangular copper wire connecting pipe having a rectangular cross-sectional shape.
4. The aviation motor stator end connecting structure using the flat copper wire as claimed in claim 3, wherein the rectangular copper wire connecting pipe has a cross-sectional size larger than that of the end conductor of the double-layer conductor structure.
5. The structure for connecting the stator end of the aircraft motor by using the flat copper wire according to claim 4, wherein the rectangular copper wire connecting pipe is compressed by a wire crimper at a half part close to the iron core.
6. The structure for connecting the stator end of an aircraft motor using flat copper wires according to claim 4, wherein the rectangular copper wire connecting pipe is filled with brazing filler material in a half part away from the iron core.
7. The structure of connecting ends of a stator of an aircraft electric motor using flat copper wires according to claim 1, wherein the brazing filler is high temperature solder or silver-based brazing filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120547337.XU CN216056550U (en) | 2021-03-16 | 2021-03-16 | Use flat copper wire's aeroengine stator tip connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120547337.XU CN216056550U (en) | 2021-03-16 | 2021-03-16 | Use flat copper wire's aeroengine stator tip connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056550U true CN216056550U (en) | 2022-03-15 |
Family
ID=80596088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120547337.XU Active CN216056550U (en) | 2021-03-16 | 2021-03-16 | Use flat copper wire's aeroengine stator tip connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056550U (en) |
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2021
- 2021-03-16 CN CN202120547337.XU patent/CN216056550U/en active Active
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