Stator winding method and stator
By setting hollow areas and tensioning holes on the stator bracket of the chunked motor, the coil adjustment and fixation are achieved, and the problem of cumbersome connection between the winding and rounding of the chunked motor is solved, and the stability and quality of the motor are improved.
Patent Information
- Application Number
- CN202311513089.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-14
- Publication Date
- 2025-05-16
AI Technical Summary
In the prior art, in the winding and rounding of the block motor, the transition line connection is complicated and costly, and the motor after the rounding may have quality problems such as safety and safety.
By setting hollow areas and tensioning holes on the block bracket of the stator, the coil reserves adjustment coils through these areas during the winding process to achieve adjustment and fixation of the transition line, ensuring that the coil is in the correct position.
It improves the manufacturing yield rate, ensures the stability and reliability of the motor, reduces cost and complexity, and improves product quality.
Smart Images
Figure CN120016773A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of compressor motors, and in particular to a stator winding method and a stator. Background Art
[0002] Block motors have the advantages of high slot fill rate, high material utilization rate, and high efficiency, and have become one of the development directions of high-efficiency motors. At present, in order to improve the winding efficiency of the stator, some motor manufacturers adopt a single-block winding method, that is, when winding the block stator, the block stators are first wound separately, and then assembled into a circle. After the assembly is completed, separate wires are used to connect the transition lines to each block stator. At this time, wiring terminals need to be installed on each block stator. However, this method will make the transition line connection cumbersome and costly when the block motor is divided into too many blocks.
[0003] Another part of motor manufacturers adopts the interlaced winding method, that is, when winding the segmented stator, it is necessary to first unfold the segmented stator so that the modules of the segmented stator are distributed along a straight line, and then use winding equipment to wind each module in turn. After completing the winding operation, the segmented stator needs to be closed, that is, the two ends of the segmented stator in the unfolded state are connected together to restore the segmented stator to a circular ring structure.
[0004] However, this method will cause various problems in the assembled motor due to the change in the distance between the blocks during the winding and assembly process. This requires the transition line to be adjusted in time to ensure reliable fixation and avoid quality problems such as safety regulations. Summary of the invention
[0005] In view of the problems in the prior art, an object of the present invention is to provide a stator winding method and a stator that can ensure the stability and reliability of a motor.
[0006] According to one aspect of the present invention, a stator winding method is provided, wherein the stator comprises a plurality of block stators and coils wound around the block stators, the plurality of block stators are divided into a plurality of partitions along the circumferential direction, each partition comprises a plurality of block stators arranged in sequence, and the block stators with the same arrangement sequence in different partitions are block stators of the same phase, each of the block stators comprises a block punching sheet and a block bracket, a hollow area is provided on the block bracket or between two adjacent block brackets, and the winding method comprises:
[0007] Before the coil is wound around the segmented stator in one partition to the segmented stator of the same phase in another partition, the coil extends into at least one of the hollow areas between the two partitions, and then extends out from the same hollow area, leaving a section of the regulating coil in the hollow area.
[0008] Optionally, the adjustment coil is open, and pulling the adjustment coil toward the opening direction can shorten the length of the coil in the hollow area, which is used to extend the transition line between the segmented stators of the same phase in two partitions; pulling it away from the opening direction can be used to tighten the transition line.
[0009] Optionally, the total number of the hollow areas set between two partitions is the same as or a multiple of the number of phases of the coil, and coils of different phases are reserved in different hollow areas.
[0010] Optionally, after the segmented stators are connected, the remaining regulating coils in the hollow area are bent into a knot so that the width of the knot is larger than the opening of the hollow area.
[0011] Optionally, the segmented bracket is provided with a wire hanging structure, and after the segmented stators are connected, the remaining regulating coils in the hollow area are wound around the wire hanging structure.
[0012] According to another aspect of the present invention, a stator is provided, comprising a plurality of block stators and coils wound around the block stators, wherein the plurality of block stators are divided into a plurality of partitions along the circumferential direction, each partition comprising a plurality of block stators arranged in sequence, and block stators with the same arrangement sequence in different partitions are block stators of the same phase, each of the block stators comprises a block punching sheet and a block bracket, the block bracket comprises a winding tooth and a wiring wall, a tensioning hole is provided on the wiring wall and / or a gap is left between the wiring walls of two adjacent block brackets, and before the coil is wound from the block stator in one partition to the same phase block stator in another partition, the coil extends into at least one of the tensioning holes or the gap, and then extends out from the same tensioning hole or the gap, with a section of the adjustment coil reserved therein.
[0013] Optionally, a notch is formed on a side of the tensioning hole.
[0014] Optionally, the notch is smaller than the hole height of the tensioning hole.
[0015] Optionally, a plurality of wire-holding ribs are further provided on the wiring wall, and wire-holding grooves for the coil to pass through are reserved between adjacent wire-holding ribs.
[0016] Optionally, an end of the wire-holding rib protrudes from a side of the wiring wall, dividing the gap between two adjacent wiring walls into multiple layers.
[0017] Optionally, a wire threading groove for the coil to pass through is provided on the wiring wall, and a wire spacing structure is provided on the side of the wiring wall facing the winding teeth, and the wire spacing structure is located between the wire threading groove and the tensioning hole or gap.
[0018] Optionally, a wire threading groove for the coil to pass through is provided on the wiring wall, and the wire threading groove is in a stepped or comb-tooth shape.
[0019] Optionally, the total number of the tensioning holes between two partitions is the same as or a multiple of the number of phases of the coil.
[0020] Optionally, the number of the tensioning holes provided on each of the block brackets is the same as the number of phases of the coil.
[0021] Optionally, a wire hanging structure for winding the regulating coil is provided on the wiring wall.
[0022] A stator winding method and a stator of the present invention enable the transition line to be adjusted and kept in the correct position during the winding and circle-forming process of the block motor, thereby improving the manufacturing yield rate and ensuring that the motor is stable, reliable and of outstanding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.
[0024] Figure 1 is a structural schematic diagram of a stator assembly of an embodiment of the present invention;
[0025] Figure 2 is a schematic structural diagram of a tensioning hole of a block bracket according to an embodiment of the present invention;
[0026] Figure 3 is a schematic structural diagram of a block bracket gap according to an embodiment of the present invention;
[0027] Figure 4 It is a structural schematic diagram of a reserved coil of a block bracket according to an embodiment of the present invention;
[0028] Figure 5 It is a schematic diagram of the stepped structure of the wire threading trough of an embodiment of the present invention;
[0029] Figure 6 is a schematic diagram of the comb-shaped structure of the threading groove of an embodiment of the present invention;
[0030] Figure 7 is a schematic diagram of bending and knotting the regulating coil of an embodiment of the present invention;
[0031] Figure 8 It is a schematic diagram of an adjusting coil wound around a hanging wire structure according to an embodiment of the present invention.
[0032] Reference numerals
[0033] 1 Segmented stator
[0034] 2 Coils
[0035] 3-block bracket
[0036] 4 Clearance
[0037] 5 tensioning holes
[0038] 6 Gap
[0039] 7. Wire clamp
[0040] 8 Cable Trough
[0041] 9 Wire Threading Slot
[0042] 10. Wiring structure
[0043] 11 Hanging wire structure DETAILED DESCRIPTION
[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.
[0045] like Figure 1 As shown in, in an embodiment of the present invention, a stator winding method, the stator includes a plurality of block stators 1 and a coil 2 wound around the block stators 1, the plurality of block stators 1 are divided into a plurality of partitions along the circumferential direction, each partition includes a plurality of block stators 1 arranged in sequence, and the block stators 1 with the same arrangement order in different partitions are the same phase block stators 1, each block stator 1 includes a block punching sheet and a block bracket 3, a hollow area is provided on the block bracket 3 or between two adjacent block brackets 3, and the winding method includes:
[0046] Before the coil 2 is wound from the segmented stator 1 in one partition to the same phase segmented stator 1 in another partition, the coil 2 extends into at least one hollow area between the two partitions, and then extends out from the same hollow area, leaving a section of the regulating coil in the hollow area.
[0047] A stator winding method of the present invention enables the block motor to shrink and relax the transition coil during the winding and circle assembly process, and keep the coil in its correct position, thereby improving the manufacturing yield rate and ensuring that the motor is stable, reliable and of outstanding quality.
[0048] In an embodiment of the present invention, the regulating coil is open-type. Pulling the regulating coil toward the opening direction can shorten the length of the coil in the hollow area, which is used to extend the transition line between the same phase block stators 1 of two partitions; pulling it away from the opening direction can be used to tighten the transition line.
[0049] The total number of the hollow areas set between the two partitions is the same as or a multiple of the number of phases of the coils, and coils of different phases are reserved in different hollow areas. Figure 1 As shown, the number of phases of the coil described in this embodiment is three-phase. Figure 8 The U phase, V phase and W phase are shown. Each block bracket is provided with 3 hollow areas, and there are 9 hollow areas between the two partitions. In actual use, each phase coil only uses 1 hollow area on a block bracket, and the other 2 hollow areas are vacant. However, the advantage is that the structure of each block bracket designed in this way is the same, which is easy to process, manufacture and install.
[0050] Please continue to see Figure 8 In the embodiment of the present invention, before the U-phase coil 2 is wound around the block stator 1 in one partition to the U-phase block stator 1 in another partition, the U-phase coil 2 has a regulating coil reserved in a hollow area on the block bracket 3 adjacent to the U-phase block bracket 3 in another partition. Similarly, the routing method of the transition line of the V-phase coil and the W-phase coil is the same as that of the U-phase coil, so that the three-phase coils are respectively reserved in the hollow areas of different layers on different block brackets, and the contact of coils of different phases is avoided to a limited extent.
[0051] In another embodiment of the present invention, transition lines of the U-phase, V-phase, and W-phase coils 2 may also be reserved in the hollow area between the same phase block bracket 3 and the adjacent block bracket 3 in another partition.
[0052] According to another aspect of the present invention, there is provided a stator, such as Figure 1 As shown in , in an embodiment of the present invention, a plurality of block stators 1 and coils 2 wound around the block stators 1 are included, the plurality of block stators 1 are divided into a plurality of partitions along the circumferential direction, each partition includes a plurality of block stators 1 arranged in sequence, and the block stators 1 with the same arrangement order in different partitions are the same phase block stators 1, each block stator 1 includes a block punching sheet and a block bracket 3, the block bracket includes a winding tooth and a wiring wall, the wiring wall is provided with a tensioning hole 5 or / and a gap 4 is left between the wiring walls of two adjacent block brackets, before the coil 2 is wound from the block stator 1 in one partition to the same phase block stator 1 in another partition, the coil 2 extends into at least one of the tensioning holes 5 or / and the gap 4, and then extends out from the same tensioning hole 5 or the gap 4, and a section of the adjustment coil is reserved inside.
[0053] like Figure 3 As shown in , in the embodiment of the present invention, a notch 6 can be optionally provided on the side of the tensioning hole 5. And preferably, the notch 6 is smaller than the hole height of the tensioning hole 5.
[0054] Furthermore, the total number of tensioning holes 5 between the two partitions is the same as or has a multiple relationship with the number of coil phases. Optionally, the number of coil phases described in this embodiment is three-phase, and each wiring wall is provided with three tensioning holes, and the total number of tensioning holes 5 between the two partitions is 9, which is convenient for processing and installation.
[0055] Preferably, the tensioning holes 5 are distributed in layers in the axial direction to avoid the crossing of transition lines of different phases.
[0056] like Figure 2 As shown in , in the embodiment of the present invention, it is preferred that a plurality of wire-holding ribs 7 are further provided on the block bracket 3, and a wire-holding groove 8 for the transition wire to pass through is reserved between adjacent wire-holding ribs 7. Further, for a three-phase motor, four wire-holding ribs 7 are adaptively provided to obtain three wire-holding grooves 8. Preferably, the wire-holding ribs 7 are distributed in layers in the axial direction to avoid the crossing of transition wires of different phases.
[0057] Preferably, the end of the wire retaining rib 7 protrudes from the side of the block bracket 3, dividing the gap 4 between two adjacent block brackets 3 into multiple layers, each layer being a hollow area reserved for the adjustment coil after the transition coil is inserted, to avoid the transition lines of different phases from crossing or being too close.
[0058] In addition, if Figure 2-3 As shown in, in the embodiment of the present invention, the hollow area and the wire clamping rib 7 are both arranged on the wiring wall, and the wiring wall is also provided with a threading groove 9 for the coil to pass through, and the threading groove 9 can be optionally stepped, such as Figure 5 The threading groove 9 can also be in the shape of a comb, and the teeth of the comb can be along the circumferential direction, such as Figure 2-4 As described above, or the tooth mouth is along the axial direction, such as Figure 6 Further, for a three-phase motor, the stepped wire-threading groove 9 or the comb-shaped wire-threading groove 9 divides the wire-threading space into three parts, so that coils of different phases can pass through without crossing or contacting each other.
[0059] Please continue to refer to Figure 4 , a wire partition structure 10 is provided on the side of the wire routing wall facing the winding teeth, and the wire partition structure 10 is located between the threading groove 9 and the tensioning hole 5 / gap 4, which can prevent the distance between the coil wound by the winding teeth and the adjustment coil inserted into the tensioning hole 5 / gap 4 from being too close, that is, to prevent the distance between different phase transition lines from being too close. In actual winding, in an embodiment of the present invention, before the block motor is assembled into a circle, during the winding process, such as Figure 2-3 As shown in the figure, the coil 2 is hooked out of the tensioning hole 5 by the equipment tooling to adjust the coil, which can be used to extend the transition line by shortening the adjustment line when the subsequent transition line is not enough, and can also be used to tighten the subsequent transition line by further lengthening the adjustment line when the subsequent transition line is too loose. Optionally, the wire separator structure 10 is a columnar structure.
[0060] Or, if Figure 1As shown in , the gap 4 between adjacent brackets can also be used to achieve a function similar to the tensioning hole 5. If the design is reasonable, it can even achieve tightening the transition line while the circle is completed.
[0061] After the circle is formed, the remaining adjustment loop hooked out of the tensioning hole 5 / gap 4 should be able to maintain its inherent position. For thicker wires, its plastic deformation can be utilized. For thinner wires, they can be appropriately bent into knots, such as Figure 7 As shown in the figure, after the adjustment line is knotted, the knot is larger than the tensioning hole 5, so that the adjustment line cannot pass through the tensioning hole 5, and the excess adjustment line can be kept inside. In other embodiments, a hanging structure 11 can be provided on the side of the wiring wall facing the winding teeth, and the adjustment coil is wound and hung on the corresponding hanging structure 11, such as Figure 8 Optionally, the hanging wire structure 11 is a columnar structure.
[0062] In summary, the stator winding method described in the embodiment of the present invention is applicable to block motors, so that the transition line routing of the block motor after being assembled into a circle has the same advantages as that of a traditional full-circle motor.
[0063] At the same time, this type of bracket is used for block motors. Compared with the single-block winding method, it has the advantages of fewer transition wire joints, simple and reliable, no need for too many plug-in terminals, low cost, simple manufacturing, and high production efficiency.
[0064] Compared with the existing interlaced winding method, the advantages are mainly as follows: ① The winding machine has simple routing, high production efficiency, and low production cost. At the same time, it can reduce the amount of copper used and reduce costs. ② There is no need to interlace back and forth, and the production yield will be improved; ③ Because the transition line does not need to be interlaced back and forth, the bracket can be designed to be simple, reducing the complexity of the bracket mold and reducing the manufacturing difficulty. ④ The telescopic function of the transition line is designed to adjust the tension of the transition line in time, and the accuracy of the transition line length and its coordination with the winding bracket are not required, thereby improving the manufacturing yield. ⑤ In the process of assembling the circle, the tightness of the transition line can be adjusted in time to avoid the transition line deviating from the wire slot, ensuring that the motor is stable and reliable with outstanding quality.
[0065] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A stator winding method, wherein the stator comprises a plurality of block stators and coils wound around the block stators, wherein the plurality of block stators are divided into a plurality of partitions along the circumferential direction, each partition comprises a plurality of block stators arranged in sequence, and the block stators in different partitions with the same arrangement sequence are block stators of the same phase, and each of the block stators comprises a block punching sheet and a block bracket, characterized in that: A hollow area is provided on the block bracket or between two adjacent block brackets, and the winding method includes: Before the coil is wound around the segmented stator in one partition to the segmented stator of the same phase in another partition, the coil extends into at least one of the hollow areas between the two partitions, and then extends out from the same hollow area, leaving a section of the regulating coil in the hollow area.
2. The stator winding method according to claim 1, characterized in that: The regulating coil is open-type. Pulling the regulating coil toward the opening direction can shorten the length of the coil in the hollow area, which is used to extend the transition line between the segmented stators of the same phase in two partitions; pulling it away from the opening direction can be used to tighten the transition line.
3. The stator winding method according to claim 1, characterized in that: The total number of the hollow areas arranged between the two partitions is the same as or has a multiple relationship with the number of phases of the coils, and coils of different phases are reserved in different hollow areas.
4. The stator winding method according to claim 2, characterized in that: After the segmented stators are connected, the remaining regulating coils in the hollow area are bent into a knot so that the width of the knot is larger than the opening of the hollow area.
5. The stator winding method according to claim 2, characterized in that: The segmented bracket is provided with a wire hanging structure, and after the segmented stators are connected, the remaining regulating coils in the hollow area are wound around the wire hanging structure.
6. A stator, comprising a plurality of block stators and coils wound around the block stators, wherein the plurality of block stators are divided into a plurality of partitions along the circumferential direction, each partition comprising a plurality of block stators arranged in sequence, and block stators with the same arrangement sequence in different partitions are block stators of the same phase, and each of the block stators comprises a block punching sheet and a block bracket, characterized in that: The block bracket includes winding teeth and a wiring wall, and the wiring wall is provided with a tensioning hole and / or a gap is left between the wiring walls of two adjacent block brackets. Before the coil is wound from the block stator in one partition to the same phase of the block stator in another partition, the coil extends into at least one of the tensioning holes and / or the gap, and then extends out of the same tensioning hole or the gap, and a section of the adjustment coil is reserved inside.
7. The stator according to claim 6, characterized in that: A notch is formed on the side of the tensioning hole.
8. The stator according to claim 7, characterized in that: The notch is smaller than the hole height of the tensioning hole.
9. The stator according to claim 6, characterized in that: The wiring wall is also provided with a plurality of wire clamping ribs, and wire clamping grooves for the coil to pass through are reserved between adjacent wire clamping ribs.
10. The stator according to claim 9, characterized in that: The end of the wire clamping rib protrudes from the side of the wiring wall, dividing the gap between two adjacent wiring walls into multiple layers.
11. The stator according to claim 6, characterized in that: The wiring wall is provided with a threading groove for the coil to pass through, and a wire separation structure is provided on the side of the wiring wall facing the winding teeth. The wire separation structure is located between the threading groove and the tensioning hole or the gap.
12. The stator according to claim 6, characterized in that: The wiring wall is provided with a wire threading groove for the coil to pass through, and the wire threading groove is in a stepped or comb-tooth shape.
13. The stator according to claim 6, characterized in that: The total number of the tensioning holes between the two partitions is the same as or a multiple of the number of phases of the coil.
14. The stator according to claim 13, characterized in that: The number of the tensioning holes arranged on each of the block brackets is the same as the number of phases of the coil.
15. The stator according to claim 6, characterized in that: The wiring wall is provided with a wire hanging structure for the regulating coil to be wound around.