Filling and sealing jig for stator coil winding

Abstract

The utility model discloses a stator coil winding potting jig which comprises a base plate, an inner ring piece and an outer ring piece which are arranged on the base plate, a potting cavity is formed between the inner ring piece and the outer ring piece, and a plurality of winding fixing pieces are evenly arranged in the potting cavity. The number and the position of the winding fixing pieces correspond to those of coil winding units of a stator coil, and the coil winding units are arranged on the winding fixing pieces through center holes. All coil winding units of a stator coil are placed in a potting cavity through winding fixing pieces according to the actual installation state, all the coil winding units of the stator coil and a wiring structure group are arranged in the potting cavity, and potting gaps are formed between the coil winding units and a base plate, between the coil winding units and an inner ring piece, between the coil winding units and an outer ring piece and between the coil winding units and the winding fixing pieces. And the stator coil is completely coated in the pouring sealant after being encapsulated, so that further assembly is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disc motors, in particular to a stator coil winding potting jig. Background Art

[0002] With the advancement of science and technology, the continuous updating of high-performance permanent magnet materials has greatly promoted the rapid development of permanent magnet motors. For permanent magnet motors, they are small in size, light in weight, high in torque density and power density, and replace the electric excitation system, thereby reducing the loss of the motor and greatly improving the efficiency of the motor. The many advantages of permanent magnet motors make them widely used in aerospace, electric vehicles and other fields. For disc permanent magnet motors, their unique axial air gap structure not only shortens the axial size of the motor, but also greatly reduces the size and mass of the motor; at the same time, the heat dissipation conditions of the stator winding of this motor are excellent. Under the same conditions, the stator current can be increased to improve the power density of the motor, and the motor has good control performance and high efficiency. It is widely used in wind power generation, robots and CNC machine tools.

[0003] The stator coils of existing slotted disc permanent magnet motors are mostly wound by enameled wire or made of printed circuit boards, which have simple structures, convenient manufacturing and low costs. However, the effective copper cross-sectional area of ​​these two types of coils is small, resulting in large heat generation of the motor stator, weak overcurrent capacity and poor thermal conductivity, which limits the load capacity and efficiency of the disc motor. Therefore, the disc motor has high requirements for heat dissipation. At present, pouring thermal conductive potting glue to insulate and protect the windings while having good heat dissipation is a good process method. The potting of existing stator coil windings is usually independent potting, that is, each winding is potted separately. Although some molds can pot multiple windings at the same time, since each winding is still independent after potting, the subsequent assembly is relatively cumbersome. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a stator coil winding potting jig, which can realize the integrated potting of the stator coil winding, facilitate subsequent assembly, and improve production efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A stator coil winding potting jig comprises a base plate, an inner ring member and an outer ring member arranged on the base plate, a potting cavity is formed between the inner ring member and the outer ring member, a plurality of winding fixing members are evenly arranged in the potting cavity, the number and position of the winding fixing members correspond to the coil winding unit of the stator coil, and the coil winding unit is arranged on the winding fixing member through a center hole.

[0007] Furthermore, the stator coil also includes a wiring structure group, which consists of a first wiring terminal, a second wiring terminal, a third wiring terminal and a plurality of winding connecting wires, the first wiring terminal, the second wiring terminal and the third wiring terminal extend to the outside of the encapsulation cavity through the winding connecting wires, all the coil winding units are evenly divided into three phase pole groups, and the coil winding units of each phase pole group are symmetrical in pairs; the winding connecting wires are respectively connected to the first wiring terminal, the second wiring terminal and the third wiring terminal after being wrapped around the outer circles of all the coil winding units.

[0008] Furthermore, along the radial direction, gaps are formed between the coil winding unit and the wiring structure group and the inner ring member and the outer ring member respectively.

[0009] Furthermore, the winding fixing member includes a fixing column adapted to the cross-sectional shape of the central hole of the coil winding unit, a fixing pressing block is arranged on the fixing column, and the coil winding unit is sleeved on the fixing column and positioned and pressed by the fixing pressing block.

[0010] Furthermore, the fixed pressure block is fixed to the fixed column by a connecting screw, and side positioning protrusions are provided on the front, back, left and right sides of the fixed pressure block and the fixed column, and the side positioning protrusions form a potting gap between the winding fixing piece and the coil winding unit.

[0011] Furthermore, the fixed pressing block is provided with a first wire pressing portion and a second wire pressing portion at two radial ends respectively, and the top of the coil winding unit cooperates with the first wire pressing portion and the second wire pressing portion.

[0012] Furthermore, a fixing installation hole is provided on the base plate, and all the winding fixing parts are arranged on the base plate through the fixing installation hole.

[0013] Specifically, fixing screws are respectively arranged in the circumferential direction of the base plate corresponding to the fixing holes, and the fixing screws fix the lower end of the fixing column of the winding fixing member in the fixing hole.

[0014] Furthermore, the fixing column is provided with bottom support columns on both sides of the base plate along the radial direction, and the bottom of the coil winding unit cooperates with the bottom support columns to form a potting gap between the bottom of the coil winding unit and the base plate.

[0015] Technical effects of the utility model:

[0016] The stator coil winding potting jig of the embodiment of the utility model places all the coil winding units of the stator coil in the potting cavity through the winding fixing parts according to the actual installation state, and all the coil winding units and the wiring structure group of the stator winding are arranged in the potting cavity, and potting gaps are formed between the coil winding units and the base plate, the inner ring part, the outer ring part and the winding fixing parts. After the stator coil is potted, it is completely covered in the potting glue, which is conducive to further assembly and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a front view structural diagram of the first PCB winding disc motor according to an embodiment of the utility model;

[0019] Figure 2 This is a front view of the second PCB winding disc motor according to an embodiment of the utility model;

[0020] Figure 3 The three-dimensional decomposition structure of the stator coil winding potting fixture of the utility model embodiment Figure 1 ;

[0021] Figure 4 The three-dimensional decomposition structure of the stator coil winding potting fixture of the utility model embodiment Figure 1 ;

[0022] In the figure, 100 is a stator coil, 110 is a coil winding unit, 120 is a wiring structure group, 121 is a first wiring terminal, 122 is a second wiring terminal, 123 is a third wiring terminal, and 124 is a winding connection line;

[0023] 200-potting fixture, 210-base plate, 211-fixed mounting hole, 212-bottom support column, 213-fixing screw; 220-inner ring, 230-outer ring, 240-winding fixing part, 241-fixed column, 242-fixed pressure block, 243-connecting screw, 244-first wire pressing part, 245-second wire pressing part, 246-side positioning protrusion. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Example 1

[0026] like Figure 1 , 2 As shown, an embodiment of the utility model provides a stator coil winding potting jig 200, including a base plate 210, an inner ring member 220 and an outer ring member 230 arranged on the base plate 210, a potting cavity is formed between the inner ring member 220 and the outer ring member 230, and a plurality of winding fixing members 240 are evenly arranged in the potting cavity, and the number and position of the winding fixing members 240 correspond to the coil winding unit 110 of the stator coil 100, and the coil winding unit 110 is arranged on the winding fixing member 240 through a center hole.

[0027] like Figure 3 , 4 As shown, the stator coil 100 also includes a wiring structure group 120, and the wiring structure group 120 is composed of a first wiring terminal 121, a second wiring terminal 122, a third wiring terminal 123 and a plurality of winding connecting wires 124. The first wiring terminal 121, the second wiring terminal 122, and the third wiring terminal 123 extend to the outside of the encapsulation cavity through the winding connecting wires 124. All the coil winding units 110 are evenly divided into three phase pole groups, and the coil winding units 110 of each phase pole group are symmetrical in pairs; the winding connecting wires 124 are respectively connected to the first wiring terminal 121, the second wiring terminal 122, and the third wiring terminal 123 after being wrapped around the outer circles of all the coil winding units 110.

[0028] Specifically, along the radial direction, gaps are formed between the coil winding unit 110 and the wiring structure group 120 and the inner ring member 220 and the outer ring member 230 , respectively.

[0029] like Figure 3 , 4 As shown, the winding fixing member 240 includes a fixing column 241 adapted to the cross-sectional shape of the center hole of the coil winding unit 110 , and a fixing pressing block 242 is arranged on the fixing column 241 . The coil winding unit 110 is sleeved on the fixing column 241 and positioned and pressed by the fixing pressing block 242 .

[0030] The fixing block 242 is fixed to the fixing column 241 by a connecting screw 243, and side positioning protrusions 246 are provided on the front, back, left and right sides of the fixing block 242 and the fixing column 243, and the side positioning protrusions 246 form a potting gap between the winding fixing member 240 and the coil winding unit 110.

[0031] like Figure 3 , 4 As shown, the fixed pressing block 242 is provided with a first wire pressing portion 244 and a second wire pressing portion 245 along both ends of the radial direction, and the top of the coil winding unit 110 cooperates with the first wire pressing portion 244 and the second wire pressing portion 245 .

[0032] The base plate 210 is provided with a fixing installation hole 211 , and all the winding fixing members 240 are arranged on the base plate 210 through the fixing installation hole 211 .

[0033] Specifically, fixing screws 213 are respectively provided in the circumferential direction of the base plate 210 corresponding to the fixing holes 211 , and the fixing screws 213 fix the lower end of the fixing column 241 of the winding fixing member 240 in the fixing holes 211 .

[0034] Among them, the fixing column 241 is respectively provided with bottom support columns 212 on both sides of the base plate 210 along the radial direction, and the bottom of the coil winding unit 110 cooperates with the bottom support columns 212 to form a potting gap between the bottom of the coil winding unit 110 and the base plate 210.

[0035] The stator coil winding potting jig of the embodiment of the utility model places all the coil winding units of the stator coil in the potting cavity through the winding fixing parts according to the actual installation state, and all the coil winding units and the wiring structure group of the stator winding are arranged in the potting cavity, and potting gaps are formed between the coil winding units and the base plate, the inner ring part, the outer ring part and the winding fixing parts. After the stator coil is potted, it is completely covered in the potting glue, which is conducive to further assembly and improves production efficiency.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A stator coil winding potting jig, characterized in that: It includes a base plate, an inner ring member and an outer ring member arranged on the base plate, a potting cavity is formed between the inner ring member and the outer ring member, and a plurality of winding fixing members are evenly arranged in the potting cavity. The number and position of the winding fixing members correspond to the coil winding unit of the stator coil, and the coil winding unit is arranged on the winding fixing member through a center hole.

2. The stator coil winding potting jig according to claim 1, characterized in that: The stator coil also includes a wiring structure group, which consists of a first wiring terminal, a second wiring terminal, a third wiring terminal and a plurality of winding connecting wires. The first wiring terminal, the second wiring terminal and the third wiring terminal extend to the outside of the encapsulation cavity through the winding connecting wires. All the coil winding units are evenly divided into three phase pole groups, and the coil winding units of each phase pole group are symmetrical in pairs. The winding connecting wires are respectively connected to the first wiring terminal, the second wiring terminal and the third wiring terminal after being wrapped around the outer circles of all the coil winding units.

3. The stator coil winding potting jig according to claim 2, characterized in that: Along the radial direction, gaps are formed between the coil winding unit and the wiring structure group and the inner ring member and the outer ring member, respectively.

4. The stator coil winding potting jig according to claim 1, characterized in that: The winding fixing member comprises a fixing column adapted to the cross-sectional shape of the central hole of the coil winding unit, a fixing pressing block is arranged on the fixing column, and the coil winding unit is sleeved on the fixing column and positioned and pressed by the fixing pressing block.

5. The stator coil winding potting jig according to claim 4, characterized in that: The fixed pressing block is fixed to the fixed column by a connecting screw, and side positioning protrusions are arranged on the front, back, left and right sides of the fixed pressing block and the fixed column, and the side positioning protrusions form a potting gap between the winding fixing piece and the coil winding unit.

6. The stator coil winding potting jig according to claim 4, characterized in that: The fixed pressing block is provided with a first wire pressing portion and a second wire pressing portion along two radial ends thereof, respectively, and the top of the coil winding unit cooperates with the first wire pressing portion and the second wire pressing portion.

7. The stator coil winding potting jig according to claim 4, characterized in that: The base plate is provided with a fixing installation hole, and all the winding fixing parts are arranged on the base plate through the fixing installation hole.

8. The stator coil winding potting jig according to claim 7, characterized in that: Corresponding to the fixing and mounting holes, fixing screws are respectively arranged in the circumferential direction of the base plate, and the fixing screws fix the lower end of the fixing column of the winding fixing member in the fixing and mounting hole.

9. The stator coil winding potting jig according to claim 4, characterized in that: The fixing column is provided with bottom support columns on both sides of the base plate along the radial direction, and the bottom of the coil winding unit cooperates with the bottom support columns to form a potting gap between the bottom of the coil winding unit and the base plate.

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