Winding tool for axial magnetic field motor stator and stator core

Abstract

The utility model provides an axial magnetic field motor stator and stator iron core winding tool, the periphery of a skeleton inner ring is provided with a plurality of stator iron cores along the circumferential direction, one end of each stator iron core is clamped to the inner side wall of a skeleton outer ring, the periphery of each stator iron core is sleeved with a coil, and the skeleton inner ring and the skeleton outer ring are concentrically arranged. The framework inner ring is fixedly connected to the periphery of the center shaft through the stator support, a plurality of first through holes are formed in the framework inner ring in the circumferential direction, each stator iron core corresponds to one first through hole, the center shaft is a hollow shaft, and one end of each coil penetrates through the corresponding first through hole and then is located in the center shaft. According to the axial magnetic field motor stator and the winding tool of the stator iron cores, the relative positions of the stator iron cores are fixed through the framework inner ring and the framework outer ring, the stator iron cores are prevented from shifting, meanwhile, the first through holes are formed in the framework inner ring, the hollow middle shaft is arranged so that the coils on the stator iron cores can be conveniently wound, and the winding efficiency of the stator iron cores is improved. A worker can conveniently install a string wire, and production is convenient.

Description

Technical Field

[0001] The utility model belongs to the field of axial motors, in particular to a winding tool for an axial magnetic field motor stator and a stator core. Background Art

[0002] Axial permanent magnet motors, also known as disc motors, have gained increasing attention due to their compact structure, high efficiency, and high power density. Disc permanent magnet motors are particularly suitable for applications that require high torque density and compact space, such as electric vehicles, renewable energy systems, gear energy storage systems, and industrial equipment. The disc motor outer rotor structure of the prior art has always been very demanding on the processing technology due to its short core, large outer diameter of the core part, and small air gap. It also has high production precision. When assembling the stator core, its circumferential limit is not in place, which can easily cause poor assembly of the stator core, making it difficult to ensure installation consistency, and there is a problem of messy stringing of the external coils of the stator core. Utility Model Content

[0003] In view of this, the utility model aims to propose an axial magnetic field motor stator to solve the problems of the prior art axial magnetic field motor stator, that the stator core is difficult to position during assembly, the installation consistency is difficult to ensure, and the external coil of the stator core is messy.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A stator of an axial magnetic field motor comprises an inner ring of a skeleton, an outer ring of a skeleton, a stator bracket, a stator core and a central shaft. A plurality of stator cores are circumferentially mounted on the periphery of the inner ring of the skeleton, and one end of each stator core is snap-connected to the inner side wall of the outer ring of the skeleton. A coil is sleeved on the periphery of each stator core. The inner ring of the skeleton and the outer ring of the skeleton are concentrically arranged. The inner ring of the skeleton is fixedly connected to the periphery of the central shaft through the stator bracket. A plurality of first through holes are circumferentially arranged on the inner ring of the skeleton, and each stator core corresponds to a first through hole. The central shaft is a hollow shaft, and one end of each coil is located inside the central shaft after passing through the first through hole.

[0006] Furthermore, the cross-section of the stator core is a trapezoidal structure, a plurality of first slots are circumferentially arranged on the outer periphery of the inner ring of the skeleton, a plurality of second slots are circumferentially arranged on the inner side wall of the outer ring of the skeleton, one end of the stator core is snapped into a first slot, and the other end of the stator core is snapped into the first second slot.

[0007] Furthermore, the stator core includes a tooth body and tooth shoes respectively arranged at both ends thereof, and the cross-sections of the tooth body and the tooth shoes are both trapezoidal structures, the outer contour of the tooth shoe is larger than the outer contour of the tooth body, the coil is sleeved to the outer periphery of the tooth body, and the coil is located between the two tooth shoes.

[0008] Furthermore, the tooth body includes a plurality of first laminations, and the plurality of first laminations are stacked in sequence from top to bottom.

[0009] Furthermore, the tooth boot includes a plurality of second laminates, and the plurality of second laminates are stacked in sequence from left to right.

[0010] Furthermore, the first laminate and the second laminate are both silicon steel sheets.

[0011] Compared with the prior art, the axial magnetic field motor stator described in the utility model has the following beneficial effects: the relative positions of multiple stator cores are fixed by the inner ring and the outer ring of the skeleton to prevent the stator cores from shifting, and at the same time, a first through hole is arranged on the inner ring of the skeleton, and a hollow central axis is set to facilitate the stringing of coils on the stator core, which is convenient for the staff to install the stringing and facilitates production.

[0012] Another object of the utility model is to provide a winding tool for the stator core of an axial magnetic field motor to solve the problem of low production efficiency that the coil can only be wound on each stator core after the stator core is manufactured.

[0013] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0014] A winding tool for an axial magnetic field motor stator core comprises baffles which are detachably mounted at both ends of a winding plate, and the outer contour size of the baffle is not less than the outer contour size of a tooth shoe, the cross section of the winding plate is a trapezoidal structure matching a tooth body, and the outer contour of the winding plate is not less than the outer contour of the tooth body, a wire embedding groove is provided on the winding plate, the wire embedding groove is used for laying binding wires, the outer periphery of the winding plate is used for winding a shaped coil, and the binding wire is used for binding the coils.

[0015] Furthermore, the winding plate and the two baffles are respectively provided with pin holes, and the periphery of the locking pin is located in the pin holes for fixing the relative positions of the winding plate and the two baffles.

[0016] Furthermore, the winding plate includes two sub-plates, which are arranged parallel to each other, each sub-plate can be fixed in relative position with the two baffles by a locking pin, and a release gap is provided between the two sub-plates that are fixed in relative position.

[0017] Compared with the prior art, the winding tooling for the stator core of an axial magnetic field motor described in the utility model has the following advantages: it is easy to set the coil on the stator core. During production, the coil is pre-wound first, and then the pre-wound coil group is assembled on the stator core to realize segmented production, so as to improve production efficiency and ensure the consistency of production quality. It is also simple to operate, has low tooling cost, and is easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural schematic diagram of an axial magnetic field motor stator according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of an axial magnetic field motor stator according to an embodiment of the utility model;

[0021] Figure 3 This is a structural schematic diagram of a stator core sleeved with coils according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic structural diagram of a stator core according to an embodiment of the utility model;

[0023] Figure 5 It is a front view schematic diagram of the toothed boot according to the embodiment of the utility model;

[0024] Figure 6 It is a front view schematic diagram of the tooth body described in the embodiment of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a winding tool for an axial magnetic field motor stator core according to an embodiment of the utility model;

[0026] Figure 8 The present invention is a schematic diagram of the exploded structure of a winding tool for an axial magnetic field motor stator core according to an embodiment of the present utility model.

[0027] Description of reference numerals:

[0028] 1-inner ring of the skeleton; 11-first through hole; 12-first slot; 2-outer ring of the skeleton; 21-second slot; 3-statator bracket; 4-stator core; 41-tooth body; 42-tooth shoe; 43-first lamination; 44-second lamination; 5-coil; 6-central axis; 7-winding plate; 71-sub-plate; 72-release gap; 73-wire burying groove; 8-baffle; 81-groove; 82-pin hole. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] like Figure 1-Figure 6 As shown, an axial magnetic field motor stator comprises a skeleton inner ring 1, a skeleton outer ring 2, a stator bracket 3, a stator core 4 and a central shaft 6. A plurality of stator cores 4 are circumferentially installed on the outer periphery of the skeleton inner ring 1, and one end of each stator core 4 is snap-connected to the inner side wall of the skeleton outer ring 2. A coil 5 is sleeved on the outer periphery of each stator core 4. The skeleton inner ring 1 and the skeleton outer ring 2 are concentrically arranged. The skeleton inner ring 1 is fixedly connected to the outer periphery of the central shaft 6 through the stator bracket 3. A plurality of first through holes 11 are circumferentially arranged on the skeleton inner ring 1, and each stator core 4 corresponds to a first through hole 11. The central shaft 6 is a hollow shaft. One end of each coil 5 is located inside the central shaft 6 after passing through the first through hole 11. The relative positions of the plurality of stator cores 4 are fixed by the skeleton inner ring 1 and the skeleton outer ring 2 to prevent the stator core 4 from shifting. At the same time, the first through holes 11 are arranged on the skeleton inner ring 1. The hollow central shaft 6 is arranged to facilitate the stringing of the coils 5 on the stator core 4, to facilitate the installation and stringing of the staff, and to facilitate production.

[0034] The cross-section of the stator core 4 is a trapezoidal structure. A plurality of first slots 12 are circumferentially arranged on the outer periphery of the inner ring 1 of the skeleton, and a plurality of second slots 21 are circumferentially arranged on the inner wall of the outer ring 2 of the skeleton. One end of the stator core 4 is snapped into a first slot 12, and the other end of the stator core 4 is snapped into the first second slot 21. Both the first slot 12 and the second slot 21 are used to fix the relative position of the stator core 4, so as to facilitate positioning and installation.

[0035] The stator core 4 includes a tooth body 41 and tooth shoes 42 respectively arranged at both ends thereof, and the cross-sections of the tooth body 41 and the tooth shoes 42 are both trapezoidal structures. The outer contour of the tooth shoe 42 is larger than the outer contour of the tooth body 41. The coil 5 is sleeved on the outer periphery of the tooth body 41, and the coil 5 is located between the two tooth shoes 42.

[0036] like Figure 5 and Figure 6 As shown, the tooth body 41 includes a plurality of first laminations 43, and the plurality of first laminations 43 are stacked sequentially from top to bottom, the tooth shoe 42 includes a plurality of second laminations 44, and the plurality of second laminations 44 are stacked sequentially from left to right, and both the first laminations 43 and the second laminations 44 are silicon steel sheets.

[0037] The stator core 4 structure consists of a tooth body 41 and a tooth shoe 42. The axial magnetic field motor has been in great market demand for many years due to its disc motor structure, but it has been unable to be mass-produced due to limitations in materials and processes. Compared with the traditional SMC (composite soft magnetic material), this structure uses traditional silicon steel sheets for the stator core 4. Since the magnetic steel strength of the silicon steel sheet is higher than that of the SMC, and the loss is lower than that of the SMC, and the thickness of the silicon steel sheet can be adjusted according to the different needs of different occasions, so as to reduce costs and improve product performance, the silicon steel sheets are first bonded during production to make the tooth body 41 and the tooth shoe 42 respectively, and then the tooth body 41, the tooth shoe 42 and the coil 5 are bonded together, and then the mold is integrally cast as a whole. The structure is simple, no complex mold is required, it is easy to implement, and the performance is better than that of the traditional axial magnetic field motor.

[0038] In order to facilitate Figure 4 The stator core 4 is shown as a coil 5. During production, the coil 5 needs to be pre-wound first, and then the pre-wound coil 5 is assembled on the stator core 4 to achieve segmented production to improve production efficiency and ensure consistency of production quality. The coil 5 and the winding need to be used as follows Figure 7 and Figure 8The winding tooling of the stator core 4 shown includes a winding plate 7 and baffles 8 detachably installed at both ends thereof, and the outer contour size of the baffle 8 is not less than the outer contour size of the tooth shoe 42. The cross-section of the winding plate 7 is a trapezoidal structure matching the tooth body 41, and the outer contour of the winding plate 7 is not less than the outer contour of the tooth body 41. The winding plate 7 is provided with a wire embedding groove 73, and the wire embedding groove 73 is used for laying binding wires. The outer periphery of the winding plate 7 is used for winding the shaped coil 5, and the binding wire is used to bind the coil 5. After the staff completes the pre-winding of the coil 5, in order to prevent the coil 5 from loosening, the coil 5 needs to be bound with binding wire, and the outer shape of the baffle 8 is not limited, but it is necessary to satisfy that the baffle 8 can completely cover the outer contour of the tooth shoe 42 so as to effectively cover the side of the coil 5. The outer contour of the winding plate 7 needs to be the same as the tooth body 41, and in order to facilitate the inner ring of the pre-wound coil 5 to be sleeved on the tooth body 41, the outer contour of the winding plate 7 is larger than the outer contour of the tooth body 41.

[0039] like Figure 8 As shown, the winding plate 7 and the two baffles 8 are respectively provided with pin holes 82, and the outer periphery of the locking pin is located in the pin hole 82 for fixing the relative positions of the winding plate 7 and the two baffles 8. The winding plate 7 includes two sub-plates 71, and the two sub-plates 71 are arranged parallel to each other. Each sub-plate 71 can be fixed in relative position with the two baffles 8 by a locking pin, and a release gap 72 is provided between the two sub-plates 71 with fixed relative positions. After the winding on the winding plate 7 is completed, the winding plate 7 and the baffle 8 are disassembled by plugging and pulling out the locking pin. At this time, the two sub-plates 71 can be retracted into the release gap 72 to facilitate the separation of the sub-plate 71 and the coil 5. When the sub-plate 71 is installed on one side of the baffle 8, in order to facilitate the alignment of the sub-plate 71 and the baffle 8, one side of each baffle 8 is provided with a groove 81 adapted to the end of the sub-plate 71, and one end of the sub-plate is snapped into the groove 81.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axial magnetic field motor stator, characterized in that: The invention comprises a skeleton inner ring (1), a skeleton outer ring (2), a stator bracket (3), a stator core (4) and a central axis (6); a plurality of stator cores (4) are circumferentially mounted on the outer periphery of the skeleton inner ring (1), and one end of each stator core (4) is snap-connected to the inner side wall of the skeleton outer ring (2); a coil (5) is sleeved on the outer periphery of each stator core (4); the skeleton inner ring (1) and the skeleton outer ring (2) are concentrically arranged; the skeleton inner ring (1) is fixedly connected to the outer periphery of the central axis (6) through the stator bracket (3); a plurality of first through holes (11) are circumferentially arranged on the skeleton inner ring (1), and each stator core (4) corresponds to a first through hole (11); the central axis (6) is a hollow axis; one end of each coil (5) passes through the first through hole (11) and is located inside the central axis (6).

2. The axial magnetic field motor stator according to claim 1, characterized in that: The cross section of the stator core (4) is a trapezoidal structure; a plurality of first slots (12) are circumferentially arranged on the periphery of the inner ring (1) of the skeleton; a plurality of second slots (21) are circumferentially arranged on the inner side wall of the outer ring (2) of the skeleton; one end of the stator core (4) is snap-fitted into one of the first slots (12); and the other end of the stator core (4) is snap-fitted into the first of the second slots (21).

3. The axial magnetic field motor stator according to claim 1, characterized in that: The stator core (4) comprises a tooth body (41) and tooth shoes (42) respectively arranged at both ends thereof, and the cross-sections of the tooth body (41) and the tooth shoes (42) are both trapezoidal structures, the outer contour of the tooth shoe (42) is larger than the outer contour of the tooth body (41), and the coil (5) is sleeved on the outer periphery of the tooth body (41), and the coil (5) is located between the two tooth shoes (42).

4. The axial magnetic field motor stator according to claim 3, characterized in that: The tooth body (41) comprises a plurality of first laminates (43), and the plurality of first laminates (43) are stacked in sequence from top to bottom.

5. The axial magnetic field motor stator according to claim 4, characterized in that: The tooth shoe (42) includes a plurality of second laminates (44), and the plurality of second laminates (44) are stacked in sequence from left to right.

6. The axial magnetic field motor stator according to claim 5, characterized in that: The first laminate (43) and the second laminate (44) are both silicon steel sheets.

7. A winding tool for a stator core of an axial magnetic field motor, characterized in that: Used for pre-winding the coil (5) described in any one of claims 1 to 6, the winding tooling comprises a winding plate (7) and baffles (8) detachably installed at both ends thereof, and the outer contour size of the baffle (8) is not less than the outer contour size of the tooth shoe (42), the cross-section of the winding plate (7) is a trapezoidal structure matching the tooth body (41), and the outer contour of the winding plate (7) is not less than the outer contour of the tooth body (41), the winding plate (7) is provided with a wire embedding groove (73), the wire embedding groove (73) is used for laying binding wires, the outer periphery of the winding plate (7) is used for winding the shaped coil (5), and the binding wire is used for binding the coil (5).

8. The winding tool for the stator core of an axial magnetic field motor according to claim 7, characterized in that: The winding plate (7) and the two baffles (8) are respectively provided with pin holes (82), and the periphery of the locking pin is located in the pin hole (82) for fixing the relative positions of the winding plate (7) and the two baffles (8).

9. The winding tool for the stator core of an axial magnetic field motor according to claim 8, characterized in that: The winding plate (7) comprises two sub-plates (71), the two sub-plates (71) are arranged parallel to each other, each sub-plate (71) can be fixed at a relative position with two baffles (8) by a locking pin, and a release gap (72) is provided between the two sub-plates (71) at fixed relative positions.

10. The winding tool for the stator core of an axial magnetic field motor according to claim 9, characterized in that: One side of each baffle plate (8) is provided with a groove (81) adapted to the end of the sub-plate block (71), and one end of the sub-plate is snap-fitted into the groove (81).

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