Stator winding structure and disc type motor thereof

Abstract

The utility model discloses a stator winding structure and a disc type motor thereof, comprising a stator seat plate and a stator coil assembly composed of a plurality of coil winding units, a magnet yoke is arranged corresponding to each coil winding unit, the plurality of coil winding units are uniformly arranged on the stator seat plate around the center of the stator seat plate, and the coil winding units are arranged on the stator seat plate. One surface of the stator base plate is provided with surrounding grooves corresponding to the coil winding units, and the surrounding grooves are internally provided with flat metal wires to form the coil winding units. The flat metal wire, generally copper, is adopted, the flat metal wire is inserted and fixed in a groove surrounding mode, the effective copper sectional area of the winding is guaranteed, meanwhile, the number of turns is increased, and the current passing capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disc motors, in particular to a stator winding structure and a disc motor thereof. 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 are simple in structure, easy to manufacture and low in cost. 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, it is necessary to further optimize the existing stator coil winding method. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a stator winding structure and a disc-type motor thereof, aiming to ensure the effective copper cross-sectional area of ​​the winding while increasing the number of turns and improving the current passing capacity.

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

[0006] In one aspect of the utility model, a stator winding structure is provided, including a stator base plate, a stator coil assembly consisting of a plurality of coil winding units, a yoke is provided corresponding to each of the coil winding units, a plurality of the coil winding units are evenly arranged on the stator base plate around the center of the stator base plate, a surrounding groove is provided on one surface of the stator base plate corresponding to each of the coil winding units, and a flat metal wire is provided in the surrounding groove to form the coil winding unit.

[0007] Specifically, the flat metal wire is inserted and fixed into the surrounding groove along one side in the width direction, and surrounds the magnetic yoke to form the coil winding unit.

[0008] Furthermore, 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; a number of winding connecting wires are connected to the first wiring part, the second wiring part, and the third wiring part respectively after being connected around the outer circles of all the coil winding units.

[0009] Specifically, a first winding end and a second winding end are respectively provided at both ends of the flat metal wire of the coil winding unit, and the first winding end and the second winding end are respectively connected to the corresponding winding connection line through a unit connection line.

[0010] Furthermore, a center hole is opened in the middle of the stator base plate, and all the surrounding grooves are evenly arranged around the center hole along the circumferential direction.

[0011] Furthermore, a yoke mounting hole is provided in the surrounding groove for mounting the yoke.

[0012] Specifically, the yoke includes a yoke column and a yoke end head arranged at one end of the yoke column, the yoke column is inserted into the yoke mounting hole, and the yoke end head abuts against the bottom of the yoke mounting hole.

[0013] Furthermore, the stator base plate corresponds to each of the first winding ends, the second winding ends and the unit connecting wires, respectively, and is provided with a first end seat, a second end seat, and a unit connecting wire mounting seat.

[0014] Another aspect of the utility model provides a disc-type motor, comprising the above-mentioned stator winding structure.

[0015] Technical effects of the utility model:

[0016] The stator winding structure and the disc motor of the utility model embodiment adopt flat metal wire, usually copper, and the flat metal wire is fixed by plugging in the surrounding groove to ensure the effective copper cross-sectional area of ​​the winding while increasing the number of turns and improving the current carrying capacity. The independent coiled core stator form and coil shape are flexible in design, the shape, size and positioning of the coil are very accurate, the processing process is very good, and it has good mechanical strength and heat dissipation conditions. 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 1This is a main structural diagram of the stator winding structure of the utility model;

[0019] Figure 2 This is a rear view structural diagram of the stator winding structure of the utility model;

[0020] Figure 3 The three-dimensional structure of the stator winding structure of the utility model Figure 1 ;

[0021] Figure 4 The three-dimensional structure of the stator winding structure of the utility model Figure 2 ;

[0022] Figure 5 It is a three-dimensional exploded structural diagram of the stator winding structure of the utility model;

[0023] In the figure, 10-stator coil assembly, 11-coil winding unit, 12-first winding end, 13-second winding end, 14-unit connecting wire, 15-winding connecting wire, 16-first connecting part, 17-second connecting part, 18-third connecting part;

[0024] 20-magnetic yoke, 21-magnetic yoke column, 22-magnetic yoke end;

[0025] 30-stator base plate, 31-surrounding groove, 32-yoke mounting hole, 33-first end seat, 34-second end seat, 35-unit connecting wire mounting seat, 36-center hole. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] like Figure 1-5 As shown, an embodiment of the utility model provides a stator winding structure, including a stator base plate 30, a stator coil assembly 10 composed of a plurality of coil winding units 11, a yoke 20 is provided corresponding to each of the coil winding units 11, and the plurality of coil winding units 11 are evenly arranged on the stator base plate 30 around the center of the stator base plate 30, and a surrounding groove 31 is provided on one surface of the stator base plate 30 corresponding to each of the coil winding units 11, and a flat metal wire is provided in the surrounding groove 31 to form the coil winding unit 11.

[0029] Specifically, the flat metal wire is inserted and fixed into the surrounding groove 31 along one side in the width direction, and surrounds the magnetic yoke 20 to form the coil winding unit 11 .

[0030] like Figure 1 As shown, all the coil winding units 11 are evenly divided into three phase pole groups, and the coil winding units 11 of each phase pole group are symmetrical in pairs; a plurality of winding connecting wires 15 are connected to the first wiring part 16, the second wiring part 17, and the third wiring part 18 respectively after being connected around the outer circles of all the coil winding units 11.

[0031] Specifically, the flat metal wire of the coil winding unit 11 is provided with a first winding end 12 and a second winding end 13 at both ends, and the first winding end 12 and the second winding end 13 are connected to the corresponding winding connection line 15 through the unit connection line 14 respectively.

[0032] like Figure 5 As shown, a center hole 36 is opened in the middle of the stator base plate 30 , and all the surrounding grooves 31 are evenly arranged around the center hole 36 along the circumferential direction.

[0033] A yoke mounting hole 32 is provided in the surrounding groove 31 for mounting the yoke 20 .

[0034] Specifically, the yoke 20 includes a yoke column 21 and a yoke end 22 disposed at one end of the yoke column 21 . The yoke column 21 is inserted into the yoke mounting hole 32 , and the yoke end 22 abuts against the bottom of the yoke mounting hole 32 .

[0035] like Figure 5 As shown, the stator base plate 30 corresponds to each of the first winding ends 12 , the second winding ends 13 and the unit connecting wires 14 are respectively provided with a first end seat 33 , a second end seat 34 , and a unit connecting wire mounting seat 35 .

[0036] The utility model also provides a disc-type motor, including the above-mentioned stator winding structure.

[0037] The stator winding structure and the disc motor of the utility model embodiment adopt flat metal wire, usually copper, and the flat metal wire is fixed by plugging in the surrounding groove to ensure the effective copper cross-sectional area of ​​the winding while increasing the number of turns and improving the current carrying capacity. The independent coiled core stator form and coil shape are flexible in design, the shape, size and positioning of the coil are very accurate, the processing process is very good, and it has good mechanical strength and heat dissipation conditions.

[0038] 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 winding structure, characterized in that: A stator coil assembly includes a stator base plate and a plurality of coil winding units, wherein a yoke is provided corresponding to each of the coil winding units, and the plurality of coil winding units are evenly arranged on the stator base plate around the center of the stator base plate, and a surrounding groove is provided on one surface of the stator base plate corresponding to each of the coil winding units, and a flat metal wire is provided in the surrounding groove to form the coil winding unit.

2. The stator winding structure according to claim 1, characterized in that: The flat metal wire is inserted and fixed into the surrounding groove along one side in the width direction, and surrounds the magnetic yoke to form the coil winding unit.

3. The stator winding structure according to claim 1, characterized in that: 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; a plurality of winding connection wires are connected to the first connection part, the second connection part, and the third connection part respectively after being connected around the outer circles of all the coil winding units.

4. The stator winding structure according to claim 3, characterized in that: The flat metal wire of the coil winding unit is provided with a first winding end and a second winding end at both ends, respectively. The first winding end and the second winding end are connected to the corresponding winding connection wire through a unit connection wire.

5. The stator winding structure according to claim 1, characterized in that: A central hole is opened in the middle of the stator base plate, and all the surrounding grooves are evenly arranged around the central hole along the circumferential direction.

6. The stator winding structure according to claim 1, characterized in that: A yoke mounting hole is provided in the surrounding groove for mounting the yoke.

7. The stator winding structure according to claim 6, characterized in that: The yoke comprises a yoke column and a yoke end head arranged at one end of the yoke column, the yoke column is inserted into the yoke mounting hole, and the yoke end head abuts against the bottom of the yoke mounting hole.

8. The stator winding structure according to claim 4, characterized in that: The stator base plate corresponds to each of the first winding ends, and the second winding ends and the unit connecting wires are respectively provided with a first end seat, a second end seat, and a unit connecting wire mounting seat.

9. A disc motor, characterized in that: Comprising the stator winding structure as described in any one of claims 1-8.

Images