Stator structure and axial magnetic field motor

Abstract

The stator structure comprises a stator, an insulating framework, a winding coil and an insulating baffle, the insulating baffle is arranged in the radial direction of the stator, and a pressing plate is arranged at the end, close to the groove bottom of a mounting groove of the stator, of the insulating baffle. The pressing plate is used for pressing the limiting plate, close to the groove bottom, of the insulating framework on the stator, limiting of the insulating framework in the axis direction of the stator is achieved, and the insulating baffle is detachably connected with the stator. The insulating framework is tightly pressed on the stator through the pressing plate of the insulating baffle detachably connected with the stator, so that the insulating framework is limited in the axis direction of the stator, the problem that the insulating framework is jacked up by pouring sealant in the glue pouring and vacuumizing process of the stator structure is solved, and after the pouring of the stator structure is completed, the stator structure is prevented from being blocked by the pouring sealant. The insulating framework is not higher than the stator iron core, so that the air gap of the axial magnetic field motor is not influenced, and the stator structure is not scratched with the rotor.

Description

Technical Field

[0001] The present application relates to the technical field of axial magnetic field motors, and particularly relates to a stator structure and an axial magnetic field motor. Background Art

[0002] The stator structure of an axial magnetic field motor includes a stator, an insulating skeleton, and winding coils. The stator has a plurality of stator cores, the plurality of stator cores are arranged along the circumferential direction of the stator structure, the insulating skeleton is sleeved on the stator core, and the winding coils are wound around the insulating skeleton.

[0003] In the related art, there is no fixed structure between the insulating skeleton and the stator. During the process of injecting glue and evacuating the air in the stator structure, the insulating skeleton will be pushed up by the potting glue, resulting in the insulating skeleton of the potted stator structure being higher than the stator core, affecting the air gap of the axial magnetic field motor, and the stator structure is prone to scratching with the rotor, generating abnormal noises.

[0004] Therefore, how to solve the problem that the insulating skeleton is higher than the stator core has become a technical problem to be urgently solved by those skilled in the art. Summary of the Utility Model

[0005] The present application provides a stator structure to solve the problem that the insulating skeleton is higher than the stator core. The present application also provides an axial magnetic field motor.

[0006] To achieve the above object, the present application provides a stator structure, including:

[0007] A stator, including a stator core, and an installation groove is formed between two adjacent stator cores;

[0008] An insulating skeleton, sleeved on the stator core, winding coils are arranged on the stator core, and one end of the insulating skeleton that fits with the bottom of the installation groove has a limiting plate;

[0009] An insulating baffle, located between two adjacent winding coils, one end of the insulating baffle close to the bottom of the installation groove has a pressing plate for pressing the limiting plate on the bottom of the groove, and the insulating baffle is detachably connected to the stator to fix the position of the insulating baffle on the stator.

[0010] Preferably, in the above stator structure, a limiting slot is provided at the bottom of the installation groove, and the limiting slot is opened along the radial direction of the stator;

[0011] The insulating baffle has an insertion plate that cooperates with the limiting slot, and the insertion plate is inserted into the limiting slot to realize the detachable connection between the insulating baffle and the stator.

[0012] Preferably, in the above stator structure, the limiting slot is a dovetail slot, and the insertion plate is adapted to the shape of the dovetail slot.

[0013] Preferably, in the above stator structure, the insertion plate and the insulating baffle are integrally injection molded.

[0014] Preferably, in the above stator structure, the insulating baffle is bolted to the stator.

[0015] Preferably, in the above stator structure, the pressing plate and the insulating baffle are integrally injection molded.

[0016] Preferably, in the above stator structure, the pressing plates are arranged on both sides of the plane where the insulating baffle is located.

[0017] Preferably, in the above stator structure, the height of the insulating baffle along the axial direction of the stator is less than the height of the insulating skeleton along the axial direction of the stator.

[0018] An axial magnetic field motor includes a stator structure, and the stator structure is the stator structure described in any one of the above solutions.

[0019] The stator structure provided by the embodiment of the present application includes a stator, an insulating skeleton, a winding coil, and an insulating baffle. The insulating baffle is arranged along the radial direction of the stator. One end of the insulating baffle close to the bottom of the installation slot of the stator has a pressing plate, and the pressing plate is used to press the limiting plate of the insulating skeleton close to the bottom on the stator to realize the axial limiting of the insulating skeleton along the stator, and the insulating baffle is detachably connected to the stator. By pressing the insulating skeleton on the stator through the pressing plate of the insulating baffle, the axial limiting of the insulating skeleton is carried out to prevent the problem that the insulating skeleton is lifted by the potting glue during the process of potting and vacuumizing the stator structure. After the potting of the stator structure is completed, the insulating skeleton will not be higher than the stator core, so that it will not affect the air gap of the axial magnetic field motor, and the stator structure will not rub against the rotor.

[0020] The present application also discloses an axial magnetic field motor, including a stator structure, and the stator structure is the stator structure described in any one of the above solutions. Since the stator structure has the above technical effects, the axial magnetic field motor with this stator structure also has the same technical effects, which will not be elaborated here. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the figures represent the same structure or operation.

[0022] Figure 1 It is a schematic structural diagram of the stator of the present application;

[0023] Figure 2 It is a schematic structural diagram of the insulating baffle of the present application;

[0024] Figure 3 It is a schematic structural diagram of the stator structure of the present application.

[0025] The drawings are described as follows:

[0026] 1 - Stator core; 11 - Limit slot; 2 - Insulating baffle; 21 - Pressure plate; 22 - Insertion plate; 3 - Winding coil. Detailed implementation manners

[0027] The following will further elaborate on the present application in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, rather than limiting the application. The described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0028] It should be noted that for the convenience of description, only the parts related to the relevant application are shown in the drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily, as long as the combined technical features are not mutually contradictory. All feasible feature combinations are the technical contents clearly recorded herein. Any sub - feature included in the same sentence can be applied independently without necessarily being applied together with other sub - features.

[0029] As shown in this application and the claims, unless the context clearly indicates otherwise, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. A method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of other identical elements in the process, method, product, or device that includes the element.

[0030] Among them, in the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" herein is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0031] Please refer to Figures 1-3 。

[0032] Some embodiments of this application disclose a stator structure, including a stator, an insulating skeleton, a winding coil 3, and an insulating baffle 2.

[0033] Among them, the stator includes a stator core 1. The stator core 1 is arranged along the circumferential direction of the stator. An installation groove is formed between two adjacent stator cores 1. The insulating baffle 2 is located in the installation groove;

[0034] The insulating skeleton is sleeved on the stator core 1. The winding coil 3 is wound on the insulating skeleton. After winding, the insulating baffle 2 is used for phase insulation.

[0035] Limit plates are provided at both ends of the insulating skeleton along the axial direction of the stator. The limit plates are used to limit the winding coil 3 so that the winding coil 3 is always located between the two limit plates.

[0036] The insulating baffle 2 is arranged along the radial direction of the stator. One end of the insulating baffle 2 close to the bottom of the installation groove has a pressing plate 21. The pressing plate 21 is used to press the limit plate of the insulating skeleton close to the bottom of the groove on the stator to realize the axial limit of the insulating skeleton along the stator. The insulating baffle 2 is detachably connected to the stator.

[0037] Specifically, after the insulating skeleton is sleeved on the stator core 1, the winding coil 3 is wound on the insulating skeleton, and then the insulating baffle 2 is inserted between two phases and connected to the stator. This application uses the insulating baffle 2 for phase insulation. The insulating baffle 2 has a certain hardness, which can reduce the difficulty of inserting the insulating baffle 2 between two-phase coils after the winding of the insulating skeleton is completed.

[0038] The insulating baffle 2 realizes the axial positioning of the insulating skeleton, which can eliminate the process of using a pressing tool to press the insulating skeleton during potting and curing, and improve the potting efficiency of the stator structure.

[0039] In the stator structure disclosed in the present application, the pressing plate 21 of the insulating baffle 2 presses the insulating skeleton on the stator to limit the insulating skeleton in the axial direction of the stator, preventing the problem that the insulating skeleton is lifted by the potting adhesive during the process of potting and vacuuming the stator structure. After the stator structure is potted, the insulating skeleton will not be higher than the stator core 1, thus not affecting the air gap of the axial magnetic field motor, and the stator structure will not rub against the rotor.

[0040] Correspondingly, the steps and time required for grinding the insulating skeleton due to the insulating skeleton being higher than the stator core 1 are also eliminated, and the risk of damaging the stator during the grinding process is also avoided.

[0041] The insulating baffle 2 is detachably connected to the stator. If the insulating baffle 2 is pre-installed on the stator, the pressing plate 21 of the insulating baffle 2 will affect the installation of the insulating skeleton. Therefore, the insulating baffle 2 should be connected to the stator after the insulating skeleton is sleeved on the stator core 1. In some tests, the insulating baffle 2 is installed after the winding coil 3 is wound around the insulating skeleton.

[0042] There are various detachable connection methods between the insulating baffle 2 and the stator.

[0043] In some embodiments, the insulating baffle 2 is connected to the stator by plugging. Specifically, a limiting slot 11 is opened at the bottom of the installation slot. The limiting slot 11 is opened in the radial direction of the stator. The insulating baffle 2 has a plug board 22 that cooperates with the limiting slot 11. The insulating baffle 2 realizes the position fixation on the stator through the plugging connection between the plug board 22 and the limiting slot 11.

[0044] The limiting slot 11 can limit the insulating baffle 2 in the axial direction of the stator, so that the insulating baffle 2 does not move in the axial direction of the stator, thereby ensuring the reliability of the pressing of the insulating skeleton by the pressing plate 21.

[0045] When the insulating baffle 2 cooperates with the stator, the plug board 22 of the insulating baffle 2 slides into the limiting slot 11 from one end of the length direction of the limiting slot 11. Preferably, the limiting slot 11 penetrates the stator.

[0046] The limiting slot 11 has a slot opening and a slot bottom. The dimensions of the slot opening and the slot bottom in the direction perpendicular to their own length direction are the widths of the slot opening and the slot bottom. It should be noted here that the length direction of the slot opening and the slot bottom is the radial direction of the stator.

[0047] In order to limit the insertion plate 22 by the limiting slot 11, the width of the slot opening of the limiting slot 11 is smaller than the width of the slot bottom of the limiting slot 11. Accordingly, the shape of the insertion plate 22 is adapted to the shape of the limiting slot 11 to prevent the insertion plate 22 from escaping from the slot opening of the limiting slot 11.

[0048] The limiting slot 11 has various forms.

[0049] In some embodiments, the limiting slot 11 is a dovetail slot. Figure 1 and Figure 3 The figure shows an embodiment in which the limiting slot 11 is a double dovetail slot. The limiting slot 11 can also be a single dovetail slot.

[0050] In some embodiments, the cross section of the limiting slot 11 along a direction perpendicular to its length is arc-shaped, and the curvature of the arc is greater than 180°.

[0051] In some embodiments, the cross-section of the limiting slot 11 along the direction perpendicular to its own length is other polygonal.

[0052] The limiting slot 11 and the inserting plate 22 are preferably clearance-fitted.

[0053] The plug board 22 and the insulating baffle 2 can be an integrally formed structure, which is simple to form, low in cost and has good consistency.

[0054] The plug plate 22 and the insulating baffle plate 2 may also be separate structures, and the plug plate 22 and the insulating baffle plate 2 are welded and connected.

[0055] In some embodiments, the insulating baffle 2 is connected to the stator by bolts. Specifically, a connecting plate is provided on the insulating baffle 2, a mounting hole is provided on the connecting plate, a threaded hole corresponding to the position of the mounting hole is provided on the stator, and the insulating baffle 2 is connected to the stator by bolts matching the mounting hole and the threaded hole.

[0056] The connection between the insulating baffle 2 and the stator is not limited to plug-in and bolt connection, but may also be other connection forms. The specific connection mode is selected by those skilled in the art according to actual needs and is not specifically limited here.

[0057] In some embodiments, the pressing plate 21 and the insulating baffle 2 are integrally injection molded, which has simple molding, low cost and good consistency.

[0058] In some embodiments, the pressing plate 21 is connected to the insulating baffle 2 by welding.

[0059] The pressure plate 21 can be arranged only on one side of the plane where the insulating baffle 2 is located, or on both sides of the plane where the insulating baffle 2 is located. Preferably, the pressure plate 21 is arranged on both sides of the plane where the insulating baffle 2 is located, so that the insulating baffle 2 can simultaneously press the insulating skeletons on both sides of the insulating baffle 2. At the same time, the parts of the insulating skeletons located on both sides of the stator core 1 can be pressed by the insulating baffles 2 located on both sides of the stator core 1, so that both sides of the insulating baffle 2 are stably pressed, improving the pressing effect on the insulating skeleton.

[0060] The pressure plate 21 arranged on the insulating baffle 2 in the radial direction of the stator can be a continuous pressure plate, and the length of the continuous pressure plate in the radial direction of the stator is equal to the length of the stator core 1 in the radial direction of the stator, or can be a plurality of pressure plates 21 arranged at intervals. The length of the pressure plates 21 arranged at intervals in the radial direction of the stator is less than the length of the stator core 1 in the radial direction of the stator.

[0061] In the embodiment where the pressure plates 21 are arranged at intervals, the pressure plates 21 located on both sides of the insulating baffle 2 are symmetrically or staggeredly distributed.

[0062] The height of the insulating baffle 2 in the axial direction of the stator is less than the height of the insulating skeleton in the axial direction of the stator, so that after the insulating baffle 2 is connected to the stator, the insulating baffle 2 will not exceed the limiting plate of the insulating skeleton away from the slot bottom, ensuring phase insulation.

[0063] This application also discloses an axial magnetic field motor, including a stator structure, and the stator structure is the stator structure described in any one of the above solutions.

[0064] Due to the above technical effects of the stator structure, the axial magnetic field motor with this stator structure also has the same technical effects, which will not be elaborated here.

[0065] In some embodiments, the stator is stacked by silicon steel sheets.

[0066] The above description is only for the preferred embodiments of this application and the explanation of the applied technical principles, and is not used to limit this application. For those skilled in the art, this application can have various changes and modifications. The scope of the application involved in this application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above application concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in this application.

Claims

1. A stator structure, characterized in that: include: The stator comprises a stator core (1), wherein a mounting groove is formed between two adjacent stator cores (1); An insulating frame is sleeved on the stator core (1), a winding coil (3) is arranged on the stator core (1), and one end of the insulating frame that is in contact with the bottom of the installation slot has a limiting plate; An insulating baffle (2) is located between two adjacent winding coils (3); one end of the insulating baffle (2) close to the bottom of the installation slot has a pressing plate (21) for pressing the limit plate against the bottom of the slot; the insulating baffle (2) is detachably connected to the stator to achieve fixing of the position of the insulating baffle (2) on the stator.

2. The stator structure according to claim 1, characterized in that: A limiting slot (11) is provided at the bottom of the installation slot, and the limiting slot (11) is opened along the radial direction of the stator; The insulating baffle (2) has an insert plate (22) that cooperates with the limiting slot (11); the insert plate (22) is plug-connected to the limiting slot (11) to achieve a detachable connection between the insulating baffle (2) and the stator.

3. The stator structure according to claim 2, characterized in that: The limiting slot (11) is a dovetail slot, and the inserting plate (22) is adapted to the shape of the dovetail slot.

4. The stator structure according to claim 2, characterized in that: The plug plate (22) and the insulating baffle (2) are integrally injection-molded.

5. The stator structure according to claim 1, characterized in that: The insulating baffle (2) is connected to the stator bolts.

6. The stator structure according to any one of claims 1 to 5, characterized in that: The pressing plate (21) and the insulating baffle (2) are integrally injection-molded.

7. The stator structure according to any one of claims 1 to 5, characterized in that: The pressing plates (21) are arranged on both sides of the plane where the insulating baffle (2) is located.

8. The stator structure according to claim 7, characterized in that: The height of the insulating baffle (2) along the axial direction of the stator is smaller than the height of the insulating frame along the axial direction of the stator.

9. An axial magnetic field motor, characterized in that: It comprises a stator structure, and the stator structure is the stator structure according to any one of claims 1 to 8.

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