High-power disc type motor

Abstract

The utility model discloses a large power disc type motor, comprising a rotating shaft and a casing, the rotating shaft is sleeved with 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 a stator seat plate around the center of the stator seat plate, and the magnet yokes are arranged on the stator seat plate. One surface of the stator base plate is provided with a surrounding groove corresponding to each coil winding unit, and flat metal wires are arranged in the surrounding grooves to form the coil winding units; the rotating shaft is installed in the machine shell through a bearing, rotor plates are distributed in the machine shell corresponding to the two sides of the stator coil assembly, the rotor plates are provided with permanent magnets facing the stator coil assembly, and the rotor plates and the rotating shaft are fixedly connected and rotate synchronously. 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. The independent winding iron core stator form and the coil shape design are flexible, the coil shape, the size and the positioning are very accurate, the processing manufacturability is very good, and good mechanical strength and heat dissipation conditions are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of disc motors, in particular to a high-power disc motor. Background Art

[0002] With the advancement of technology, the continuous development of high-performance permanent magnet materials has greatly promoted the rapid development of permanent magnet motors. Permanent magnet motors are small in size, lightweight, and offer high torque and power densities. They replace the electric excitation system, reducing motor losses and significantly improving efficiency. These numerous advantages have led to their widespread application in aerospace, electric vehicles, and other fields. The unique axial airgap structure of disc-type permanent magnet motors not only shortens the motor's axial dimensions but also significantly reduces its size and mass. Furthermore, the motor's stator windings offer superior heat dissipation, allowing for increased stator current to boost power density under the same conditions. Furthermore, the motors offer excellent controllability and high efficiency, making them widely used in fields such as wind power generation, robotics, and CNC machine tools.

[0003] The stator coils of existing slotted disc permanent magnet motors are mostly wound with enameled wire or made from printed circuit boards. These coils offer simple structures, easy manufacturing, and low cost. However, these coil types have a small effective copper cross-sectional area, resulting in high stator heat generation, weak overcurrent capability, and poor thermal conductivity. This limits the load capacity and efficiency of the disc motor. Therefore, further optimization of existing stator coil winding methods is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-power disc motor, which can improve the overall performance of the motor, have greater power, higher speed, and longer life, and at the same time can significantly reduce the thickness of the motor.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A high-power disc motor comprises: a rotating shaft and a housing; a stator coil assembly consisting of multiple coil winding units is sleeved on the rotating shaft; a yoke is provided for each coil winding unit; the multiple 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 coil winding unit; flat metal wire is provided in the surrounding groove to form the coil winding unit; the rotating shaft is mounted in the housing via bearings; rotor plates are distributed in the housing corresponding to both sides of the stator coil assembly; the rotor plates are provided with permanent magnets facing the stator coil assembly; the rotor plates are fixedly connected to the rotating shaft and rotate synchronously.

[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 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.

[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 wires through unit connection wires.

[0010] Furthermore, 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.

[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 is respectively provided with a first end seat, a second end seat, and a unit connecting wire mounting seat corresponding to each of the first winding end, the second winding end, and the unit connecting wire.

[0014] Furthermore, the casing includes a front shell and a rear shell, the rotating shaft is installed between the front shell and the rear shell through a bearing, and an accommodating cavity is formed between the front shell and the rear shell. In the accommodating cavity, the stator coil assembly is mounted on the rotating shaft through a stator base plate, and the yoke is fixed to the stator base plate and passes through each of the coil winding units.

[0015] Specifically, the stator base plate is fixedly connected to the front housing or the rear housing, or the stator base plate and the front housing or the rear housing are integrally formed.

[0016] Optionally, the high-power disc motor further includes a stator pressure ring, and the stator coil assembly is fixed to the stator base plate via the stator pressure ring.

[0017] Furthermore, a cooling seat and a wiring seat are respectively provided on the casing, and the stator coil assembly is connected to an external power supply through the wiring seat. The cooling seat is provided with a liquid inlet and a liquid outlet for the coolant to enter and exit.

[0018] Specifically, flow channel holes may be provided on the stator coil assembly and the stator base plate, so that the coil winding unit and the magnetic yoke are in repeated contact with the coolant.

[0019] Technical effects of this utility model:

[0020] The high-power disc-type motor in this embodiment utilizes flat metal wire, typically copper, secured by a looping slot system. This ensures the effective copper cross-sectional area of the winding while increasing the number of turns and improving current handling capacity. The independently wound core stator and coil shape offer flexible design options, resulting in precise coil shape, size, and positioning, excellent processability, and superior mechanical strength and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 This is a side structural diagram of a high-power disc motor according to an embodiment of the present utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of a high-power disc motor according to an embodiment of the present utility model;

[0024] Figure 3 This is a front structural diagram of the stator coil assembly of the present utility model;

[0025] Figure 4 This is a rear structural diagram of the stator coil assembly of the present utility model;

[0026] Figure 5 The three-dimensional structure of the stator coil assembly of the utility model Figure 1 ;

[0027] Figure 6 The three-dimensional structure of the stator coil assembly of the utility model Figure 2 ;

[0028] Figure 7 This is a three-dimensional exploded structural diagram of the stator coil assembly of the present utility model;

[0029] Among them, 10-rotating shaft, 20-front housing, 30-rear housing, 40-stator coil assembly, 50-magnetic yoke, 60-rotor plate, 70-permanent magnet, 80-stator seat plate, 90-stator pressure ring, 100-cooling seat, 101-liquid inlet, 102-liquid outlet, 110-terminal seat, 120-speed sensor, 130-end cover, 140-bearing;

[0030] 41 - coil winding unit, 42 - first winding end, 43 - second winding end, 44 - unit connecting wire, 45 - winding connecting wire, 46 - first connecting portion, 47 - second connecting portion, 48 - third connecting portion;

[0031] 51-yoke column, 52-yoke end;

[0032] 81 - surrounding groove, 82 - yoke mounting hole, 83 - first end seat, 84 - second end seat, 85 - unit connecting wire mounting seat, 86 - center hole. DETAILED DESCRIPTION

[0033] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0034] Example 1

[0035] like Figure 1 、 2 As shown in Figures 3 and 4, an embodiment of the present invention provides a high-power disc motor, comprising: a rotating shaft 10 and a casing, wherein a stator coil assembly 40 consisting of a plurality of coil winding units 41 is sleeved on the rotating shaft 10, a yoke 50 is provided corresponding to each of the coil winding units 41, a plurality of the coil winding units 41 are evenly arranged on the stator base plate 80 around the center of the stator base plate 80, a surrounding groove 81 is provided on one surface of the stator base plate 80 corresponding to each of the coil winding units 41, a flat metal wire is provided in the surrounding groove 81 to form the coil winding unit 41; the rotating shaft 10 is mounted in the casing through a bearing 140, and rotor plates 60 are distributed in the casing corresponding to both sides of the stator coil assembly 40, the rotor plates 60 are provided with permanent magnets 70 facing the stator coil assembly 40, and the rotor plates 60 are fixedly connected to the rotating shaft 10 and rotate synchronously.

[0036] like Figure 3 As shown, the flat metal wire is inserted and fixed into the surrounding groove 81 along one side in the width direction, and surrounds the magnetic yoke to form the coil winding unit 41.

[0037] like Figure 3-7 As shown, all the coil winding units 41 are evenly divided into three phase pole groups, and the coil winding units 41 of each phase pole group are symmetrical in pairs; a number of winding connecting wires 45 are connected to the first wiring part 46, the second wiring part 47, and the third wiring part 48 after being connected around the outer circle of all the coil winding units 41.

[0038] Specifically, a first winding end 42 and a second winding end 43 are respectively provided at both ends of the flat metal wire of the coil winding unit 41. The first winding end 42 and the second winding end 43 are respectively connected to the corresponding winding connection line 45 through a unit connection line 44.

[0039] like Figure 3 、 4 As shown, a center hole 86 is opened in the middle of the stator base plate 80, and all the surrounding grooves 81 are evenly arranged around the center hole 86 along the circumferential direction.

[0040] Optionally, a yoke mounting hole 82 is defined in the surrounding groove 81 for mounting the yoke 50 .

[0041] Specifically, the yoke 50 includes a yoke column 51 and a yoke end 52 provided at one end of the yoke column 51 . The yoke column 51 is inserted into the yoke mounting hole 82 , and the yoke end 82 abuts against the yoke mounting bottom.

[0042] like Figure 7 As shown, the stator base plate 80 is respectively provided with a first end seat 83 , a second end seat 84 , and a unit connecting line mounting seat 85 corresponding to each of the first winding end 42 , the second winding end 43 and the unit connecting line 44 .

[0043] like Figure 1 、 2 As shown in Figure 3, the housing includes a front housing 20 and a rear housing 30. The rotating shaft 10 is distributed and installed between the front housing 20 and the rear housing 30 through a bearing 140. An accommodating cavity is formed between the front housing 20 and the rear housing 30. In the accommodating cavity, the stator coil assembly 40 is mounted on the rotating shaft 10 through a stator base plate 80. The yoke 50 is fixed to the stator base plate 80 and passes through each of the coil winding units 41.

[0044] Specifically, the stator base plate 80 is fixedly connected to the front housing 20 or the rear housing 30 , or the stator base plate 80 and the front housing 20 or the rear housing 30 are integrally formed.

[0045] Optionally, the high-power disc motor further includes a stator pressure ring 90 , and the stator coil assembly 40 is fixed to the stator base plate 80 via the stator pressure ring 90 .

[0046] like Figure 1 、 2 As shown, the housing is provided with a cooling base 100 and a terminal block 110, respectively. The stator coil assembly 40 is connected to an external power source via the terminal block 110. The cooling base 100 is provided with a liquid inlet 101 and a liquid outlet 102 for the inlet and outlet of coolant. Specifically, flow channel holes can be provided in the stator coil assembly 40 and the stator base plate 80 to ensure that the coil winding unit 401 and the yoke 50 are in repeated contact with the coolant.

[0047] Optionally, the rotating shaft 10 forms an output end at one end of the front housing 20 , and a rotation speed sensor 120 is provided at one end of the rear housing 30 , and an end cover 130 is provided on the rotation speed sensor 120 .

[0048] The high-power disc-type motor in this embodiment utilizes flat metal wire, typically copper, secured by a looping slot system. This ensures the effective copper cross-sectional area of the winding while increasing the number of turns and improving current handling capacity. The independently wound core stator and coil shape offer flexible design options, resulting in precise coil shape, size, and positioning, excellent processability, and superior mechanical strength and heat dissipation.

[0049] 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. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A high-power disc motor, characterized in that: include: A rotating shaft and a casing, wherein a stator coil assembly consisting of multiple coil winding units is sleeved on the rotating shaft, a yoke is provided corresponding to each coil winding unit, multiple 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 coil winding unit, and a flat metal wire is provided in the surrounding groove to form the coil winding unit; the rotating shaft is installed in the casing through a bearing, and rotor plates are distributed in the casing corresponding to both sides of the stator coil assembly, and the rotor plates are provided with permanent magnets facing the stator coil assembly. The rotor plates are fixedly connected to the rotating shaft and rotate synchronously.

2. The high-power disc motor 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 high-power disc motor 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 number 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 high-power disc motor according to claim 3, characterized in that: 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 wires through unit connection wires.

5. The high-power disc motor 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 high-power disc motor according to claim 1, characterized in that: A yoke mounting hole is provided in the surrounding groove for mounting the yoke.

7. The high-power disc motor according to claim 6, characterized in that: 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.

8. The high-power disc motor according to claim 4, characterized in that: The stator base plate corresponds to each of the first winding ends, 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. The high-power disc motor according to claim 1, characterized in that: The casing includes a front shell and a rear shell, and the rotating shaft is installed between the front shell and the rear shell through a bearing. An accommodating cavity is formed between the front shell and the rear shell. In the accommodating cavity, the stator coil assembly is mounted on the rotating shaft through a stator base plate, and the magnetic yoke is fixed to the stator base plate and passes through each of the coil winding units.

10. The high-power disc motor according to claim 9, characterized in that: The housing is provided with a cooling seat and a wiring seat respectively. The stator coil assembly is connected to an external power supply via the wiring seat. The cooling seat is provided with a liquid inlet and a liquid outlet for the coolant to enter and exit.

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