Stator structure and disc type motor

Abstract

The utility model provides a stator structure and a disc type motor, the stator structure comprises coil monomers, the coil monomers are formed by winding enameled wires, a plurality of coil monomers form a double-layer lap winding distributed winding, a plurality of windings are arranged along the circumferential direction to form a stator coil, and the stator coil is packaged in an insulating plate; each coil monomer comprises a straight line part, an inner side end part, an outer side end part and a nose end; and the linear part, the inner side end part, the outer side end part and the nose end enclose to form the coil single body. The coil monomers form the double-layer laminated distributed winding and are uniformly arranged, so that the torque of the disc type motor is more stable, and the vibration noise of the disc type motor is further reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric machines, and particularly relates to a stator structure and a disc type electric machine. BACKGROUND

[0002] Disc type permanent magnet electric machines are classified according to the number of stators and rotors, relative positions and main magnetic circuit structures, and the basic topological structures are roughly divided into single-disc structures of single stator and single rotor, double stator and single rotor structures, single stator and double rotor magnetic circuit parallel structures and single stator and double rotor magnetic circuit series structures.

[0003] For the structure of the disc type electric machine stator concentrated winding, the output torque is relatively unstable, resulting in the problem of relatively large vibration noise. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the technical problem to be solved by the application is to provide a stator structure and a disc type electric machine, which can solve the problems of large starting torque and large vibration noise of the existing iron coreless stator structure electric machine.

[0005] In order to solve the above problems, the application provides a stator structure in the first aspect, which comprises:

[0006] The coil monomer is wound by enameled wire, a plurality of coil monomers form a double-layer stacked distributed winding, a plurality of windings are arranged in a circumferential direction to form a stator coil, and the stator coil is packaged in an insulating plate.

[0007] The coil monomer comprises a straight line part, an inner side end part, an outer side end part and a nose end part, and the straight line part, the inner side end part, the outer side end part and the nose end part enclose the coil monomer.

[0008] Optionally, the straight line part comprises a first straight line edge and a second straight line edge, and the first straight line edge and the second straight line edge converge in a first direction and intersect at the center of the stator structure.

[0009] Optionally, the outer circumferential surface of the insulating plate is provided with a first boss protruding outward.

[0010] Optionally, a plurality of first bosses are arranged at equal intervals in the circumferential direction.

[0011] Optionally, a through hole is processed at the center of the insulating plate, and the insulating plate comprises an inner side end of a plate body, a middle part of the plate body and an outer side end of the plate body from the center to the edge, and the thickness of the outer side end of the plate body is greater than the thickness of the inner side end of the plate body, which is greater than the thickness of the middle part of the plate body.

[0012] Optionally, the outer circumferential surface of the insulating plate is further provided with a second boss, and the second boss is arranged between adjacent two first bosses.

[0013] Optionally, the stator structure further comprises a terminal, the terminal is arranged on the second boss, the terminal extends at least partially into the second boss, and the outgoing end of the stator coil is connected to one end of the terminal inside the second boss.

[0014] Optionally, the terminal comprises a first terminal post and a second terminal post connected to the first terminal post, the second terminal post is arranged on the second boss and extends at least partially into the second boss, and is used for being connected to the outgoing end of the stator coil.

[0015] Optionally, the outer periphery of the first terminal post is threaded, and is used for being connected to an external cable.

[0016] The second aspect of the application provides a disc motor comprising the stator structure according to any one of the above.

[0017] By means of the above technical solution, the application has at least the following beneficial effects:

[0018] The stator structure provided by the embodiment of the application has the coil monomer forming a double-layer stacked winding distributed winding, and the coil monomers are arranged in a uniform arrangement mode, so that the torque of the disc motor is more stable, and the vibration noise of the disc motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a front view of the stator structure of the embodiment of the application;

[0020] Figure 2 FIG. 2 is a sectional view of the stator structure of the embodiment of the application;

[0021] Figure 3 FIG. 3 is a front view of the coil monomer of the embodiment of the application;

[0022] Figure 4 FIG. 4 is a side view of the coil monomer of the embodiment of the application;

[0023] Figure 5 FIG. 5 is a front view of the insulating plate of the embodiment of the application;

[0024] Figure 6 FIG. 6 is a sectional view of the insulating plate of the embodiment of the application;

[0025] Figure 7 FIG. 7 is a front view of the terminal of the embodiment of the application;

[0026] Figure 8 FIG. 8 is a side view of the terminal of the embodiment of the application.

[0027] The reference signs are as follows:

[0028] 1, coil monomer; 11, straight line part; 111, first straight line edge; 112, second straight line edge; 12, inner side end part; 13, outer side end part; 14, nose end;

[0029] 2, insulating plate; 21, plate body inner side end; 22, plate body outer side end; 23, plate body middle part; 24, first boss; 25, second boss;

[0030] 3, terminal; 31, second terminal post; 32, first terminal post. DETAILED DESCRIPTION

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] The preferred embodiments of the present application are described below in conjunction with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0035] In conjunction with Figures 1 to 8 As shown in the drawings, according to the first aspect of the present application, a stator structure is provided, comprising:

[0036] The coil monomer 1 is wound by enameled wire, and a plurality of coil monomers 1 form a double-layered and stacked distributed winding, and the plurality of windings are arranged in a circumferential direction to form a stator coil, and the stator coil is packaged in an insulating plate 2.

[0037] The coil monomer 1 includes a straight portion 11, an inner side end portion 12, an outer side end portion 13, and a nose end 14; the straight portion 11, the inner side end portion 12, the outer side end portion 13, and the nose end 14 enclose the coil monomer 1.

[0038] The coil monomer 1 forms a double-layered and stacked distributed winding and is arranged in a uniform arrangement, so that the torque of the disc motor is more stable, thereby reducing the vibration noise of the disc motor.

[0039] The stator coil is uniformly distributed in a circumferential direction according to a designed virtual stator slot number, the outgoing wire end is connected according to a designed scheme, and then is welded with a wiring terminal 3 and placed in a fixed position; the stator coil is packaged with epoxy resin, at least part of the wiring terminal 3 and the outgoing wire end are buried in the epoxy resin, and after the epoxy resin is cured, a stator structure is formed.

[0040] The insulating plate 2 is formed by curing the epoxy resin; in other embodiments, according to specific requirements of the stator structure, the material of the insulating plate 2 is not limited to the epoxy resin.

[0041] The straight portion 11 includes a first straight side 111 and a second straight side 112, and the first straight side 111 and the second straight side 112 converge in a first direction and intersect at a center of the stator structure.

[0042] The first straight side 111 and the second straight side 112 converge in the first direction and intersect at a point, that is, the first straight side 111 and the second straight side 112 form an included angle, and in the embodiment, the included angle is 20°. In other embodiments, the included angle is not limited to 20° and can be adjusted according to specific conditions. The purpose of this is to ensure the electromagnetic characteristics of the disc motor. Figure 3 The direction from top to bottom is the first direction.

[0043] The first straight side 111 and the second straight side 112 each include a first end and a second end, the first end of the first straight side 111 and the first end of the second straight side 112 converge in the first direction, that is, the second end of the first straight side 111 and the second end of the second straight side 112 expand in the opposite direction of the first direction.

[0044] The first straight side 111 and the second straight side 112 converge in the first direction and intersect at a point, that is, the first straight side 111 and the second straight side 112 form an included angle, and in the embodiment, the included angle is 20°. In other embodiments, the included angle is not limited to 20° and can be adjusted according to specific conditions. The purpose of this is to ensure the electromagnetic characteristics of the disc motor.

[0045] The inner side end 12 of the coil monomer 1 is divided into a first inner side end and a second inner side end, the outer side end 13 is divided into a first outer side end and a second outer side end, the first straight edge 111 is connected with the first inner side end, the second straight edge 112 is connected with the second inner side end, the first outer side end is connected with the first straight edge 111, the second outer side end is connected with the second straight edge 112, the first inner side end and the second inner side end and the first outer side end and the second outer side end are connected through the nose end 14, thereby forming the coil monomer 1, and the coil monomer 1 structure disclosed in the application is used to realize double-layer winding.

[0046] Specifically, the inner side end is connected with the first end of the first straight edge, that is, the converging end, and the outer side end is connected with the second end of the second straight edge, that is, the expanding end.

[0047] The outer peripheral surface of the insulation plate 2 is provided with a first boss 24 protruding outward.

[0048] The number of the first boss 24 is six, which is used to realize circumferential positioning and transmit torque. In other embodiments, the number of the first boss 24 is not limited to six according to specific conditions.

[0049] The plurality of first bosses 24 are arranged equidistantly in the circumferential direction.

[0050] The plurality of first bosses 24 are arranged equidistantly in the circumferential direction, that is, the spacing between adjacent two first bosses 24 is equal, and the equidistant arrangement makes the force balance between each point and the torque transmission more stable.

[0051] The center of the insulation plate 2 is processed with a through hole, and the center to the edge of the insulation plate 2 is respectively a plate body inner side end 21, a plate body middle part 23 and a plate body outer side end 22, and the thickness of the plate body outer side end 22 is greater than the thickness of the plate body inner side end 21 which is greater than the thickness of the plate body middle part 23.

[0052] On the one hand, the outer side end is a position for transmitting torque, therefore, the outer side end of the insulation plate 2 is thicker than the inner side end.

[0053] On the other hand, the thickness of the plate body outer side end 22 is greater than the thickness of the plate body inner side end 21 which is greater than the thickness of the plate body middle part 23, which does not affect the strength of the overall stator structure and makes the stator structure have the advantage of lightweight.

[0054] The outer peripheral surface of the insulation plate 2 is further provided with a second boss 25, and the second boss 25 is arranged between adjacent two first bosses 24.

[0055] The second boss 25 is arranged between two adjacent first bosses 24, so as to avoid interference between the second boss 25 and the first boss 24, so as to avoid affecting the connection of the first boss 24 and other parts. At the same time, the second boss 25 is used

[0056] The stator structure further comprises a wiring terminal 3 arranged on the second boss 25, the wiring terminal 3 extending at least partially into the second boss 25, and the outgoing end of the stator coil is connected to one end of the wiring terminal 3 inside the second boss 25.

[0057] The number of the wiring terminal 3 is six, which is used to connect with the outgoing end of the stator coil.

[0058] The wiring terminal comprises a first connecting column 32 and a second connecting column 31 connected with the first connecting column 32, the second connecting column 31 is arranged on the second boss 25 and extends at least partially into the second boss 25, and is used to connect with the outgoing end of the stator coil; the outer circumferential surface of the first connecting column 32 is threaded, which is used to connect with the external cable.

[0059] The outer circumferential surface of the first connecting column 32 is externally threaded, which is used to connect with the external cable and can bear a certain torque when tightening the nut on the first connecting column 32; the cross section of the second connecting column 31 is square, which is used to be buried in the inside of the insulating plate 2 and connect with the outgoing end.

[0060] Specifically, a blind hole is arranged in the axial direction of the second connecting column 31, and the outgoing end is welded and fixed.

[0061] Specifically, in order to improve the connection stability between the first connecting column 31 and the insulating plate 2, a protrusion is arranged on the outer side surface of the first connecting column 31, so as to prevent the wiring terminal 3 from falling off from the insulating plate 2 in the process of long-term use.

[0062] The second aspect of the embodiment of the application provides a disc type motor comprising the stator structure of any one of the above.

[0063] The coil monomer 1 forms a double-layered stacked winding distributed winding, which is arranged in a uniform arrangement manner, so that the torque of the disc type motor is more stable, and the vibration noise of the disc type motor is reduced.

[0064] Those skilled in the art can easily understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0065] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above is merely the preferred embodiment of the present application, it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and variations can be made, these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A stator structure, characterized by, The application relates to a stator structure. The coil monomer (1) comprises a straight section (11), an inner side end section (12), an outer side end section (13) and a nose end (14), and the straight section (11), the inner side end section (12), the outer side end section (13) and the nose end (14) form the coil monomer (1). The straight section (11) comprises a first straight edge (111) and a second straight edge (112), and the first straight edge (111) and the second straight edge (112) converge in a first direction and intersect at the center of the stator structure.

2. A stator structure according to claim 1, wherein The outer circumferential surface of the insulation plate (2) is provided with a first boss (24) protruding outward.

3. A stator structure according to claim 1, wherein A plurality of the first bosses (24) are arranged at equal intervals in the circumferential direction.

4. A stator structure according to claim 3, wherein A through hole is formed at the center of the insulation plate (2), and the insulation plate (2) comprises an inner plate body end (21), a plate body middle part (23) and an outer plate body end (22) from the center to the edge, and the thickness of the outer plate body end (22) is greater than that of the inner plate body end (21) and that of the plate body middle part (23).

5. A stator structure according to claim 3, wherein The outer circumferential surface of the insulation plate (2) is further provided with a second boss (25), and the second boss (25) is arranged between two adjacent first bosses (24).

6. A stator structure according to claim 3, wherein The stator structure further comprises a wiring terminal (3) arranged on the second boss (25), and the wiring terminal (3) at least partially extends into the second boss (25), and the outgoing end of the stator coil is connected to one end of the wiring terminal (3) in the second boss (25).

7. A stator structure according to claim 6, wherein The wiring terminal comprises a first wiring column (32) and a second wiring column (31) connected with the first wiring column (32), the second wiring column (31) is arranged on the second boss (25) and at least partially extends into the second boss (25), and is used for being connected with the outgoing end of the stator coil.

8. A stator structure according to claim 7, wherein The outer circumferential surface of the first wiring column (32) is provided with a thread for being connected with an external cable.

9. A stator structure according to claim 8, wherein The application further relates to a stator structure comprising any one of the stator structures in claims 1 to 9.

10. A disc-type motor characterized by comprising: ​

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