Stator assembly and motor

Abstract

The stator assembly comprises a stator main body and an electric control board, the stator main body is provided with a first part and a second part in the axial direction, and at least one part of the periphery of the second part protrudes out of the outer peripheral surface of the first part. A containing groove is formed in the end face, away from the first part, of the second part, and the electric control board is arranged in the containing groove. According to the stator assembly provided by the embodiment of the utility model, at least one part of the periphery of the second part protrudes out of the first part, and the second part is provided with the accommodating groove, so that sufficient accommodating space is provided for the electric control board, the electric control board is convenient to install and arrange, and the arrangement cost of the electric control board is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator assembly and a motor comprising the stator assembly. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It converts electrical energy into rotational force through the principle of electromagnetic induction to drive mechanical equipment to work. Motors are widely used in industrial production, transportation, household appliances and other fields.

[0003] In the related art, the electric control board arranged in the stator assembly is generally installed in a structure formed by a metal bracket integrally formed with the bearing seat, and the cost of using the metal structure is relatively high. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] Therefore, one object of the present invention is to provide a stator assembly that can provide sufficient accommodation space for an electric control board, facilitate the installation of the electric control board, and reduce the layout cost of the electric control board.

[0006] Another object of the present invention is to provide a motor, which includes the aforementioned stator assembly.

[0007] According to the stator assembly in the embodiment of the utility model, the stator assembly includes a stator body and an electric control board, the stator body has a first part and a second part in the axial direction, at least a part of the periphery of the second part protrudes from the outer peripheral surface of the first part, and the end surface of the second part facing away from the first part is provided with a receiving groove, and the electric control board is arranged in the receiving groove.

[0008] According to the stator assembly in the embodiment of the utility model, by making at least a portion of the periphery of the second part protrude from the first part and providing a receiving groove in the second part, sufficient accommodating space is provided for the electric control board, which facilitates the installation of the electric control board and reduces the layout cost of the electric control board.

[0009] In addition, the stator assembly according to the above embodiment of the utility model may also have the following additional technical features:

[0010] Optionally, a clearance groove is provided on the bottom surface of the accommodating groove, a step structure is constructed between the bottom surface of the clearance groove and the bottom surface of the accommodating groove, the electric control board is stacked on the bottom surface of the accommodating groove, and there is a gap between the bottom surface of the clearance groove and the electric control board.

[0011] Optionally, a step height between a bottom surface of the clearance groove and a bottom surface of the receiving groove is not less than 1.5 mm.

[0012] Optionally, a depth dimension of the accommodating groove is smaller than a thickness dimension of the second portion.

[0013] Optionally, in the axial projection, at least a portion of the accommodating groove protrudes from the outer circumferential surface of the first portion.

[0014] Optionally, the stator body has a first matching hole, which passes through the first part and the second part along the axis of the stator assembly and is connected to the accommodating groove.

[0015] Optionally, a second matching hole is provided on the electric control board, and the second matching hole is opposite to the first matching hole along the axial direction.

[0016] Optionally, a wire groove portion is provided on the peripheral wall of the accommodating groove, and the wire groove portion has a wire passing groove, the wire passing groove extends in the radial direction of the stator body, and the wire passing groove passes through the peripheral wall of the accommodating groove.

[0017] Optionally, the stator body is integrally formed, and the wire groove portion is partially constructed on the stator body; or, the wire groove portion is arranged on the peripheral wall of the accommodating groove, and the stator body and the accommodating groove are secondary injection molded with different materials.

[0018] According to the motor in the embodiment of the utility model, the motor includes a rotor assembly and the above-mentioned stator assembly, the first part is assembled on the radial inner side of the rotor assembly, and the stator assembly is configured to drive the rotor assembly to rotate.

[0019] According to the motor in the embodiment of the utility model, by applying the aforementioned stator assembly, the layout cost of the electric control board can be reduced, and the motor can be made lighter and thinner.

[0020] Optionally, in the projection in the axial direction, the peripheral edge of the second portion protrudes from the inner peripheral surface of the rotor assembly and is opposite to the peripheral wall of the rotor assembly along the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the stator assembly in some embodiments of the present invention (the electric control board is not shown).

[0022] Figure 2 It is a cross-sectional view of a stator assembly in some embodiments of the present invention (the electric control board is not shown).

[0023] Figure 3 It is a schematic diagram of the motor in some embodiments of the utility model (the electric control board is not shown).

[0024] Figure 4 It is a cross-sectional view of the motor in some embodiments of the present utility model.

[0025] Reference numerals:

[0026] Motor 1000 , stator assembly 100 , stator body 10 , first part 11 , second part 12 , accommodating groove 121 , giving way groove 122 , wire passing groove 123 , first matching hole 13 , electric control board 20 , second matching hole 21 , rotor assembly 200 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The utility model provides a stator assembly 100 and a motor 1000 including the stator assembly 100 , which can provide sufficient accommodation space for the electric control board 20 , facilitate the installation of the electric control board 20 , and reduce the layout cost of the electric control board 20 .

[0029] Reference Figures 1 to 4 According to the stator assembly 100 in the embodiment of the present utility model, the stator assembly 100 includes a stator body 10 and an electric control board 20 .

[0030] The stator body 10 has a first part 11 and a second part 12 in the axial direction. In other words, in the axial direction of the stator body 10, the first part 11 and the second part 12 are axially opposite to each other, at least a part of the periphery of the second part 12 protrudes from the outer peripheral surface of the first part 11, and an end surface of the second part 12 facing away from the first part 11 is provided with a receiving groove 121, and the electric control board 20 is arranged in the receiving groove 121; such an arrangement can provide sufficient space for the arrangement of the electric control board 20, facilitate the installation of the electric control board 20, and reduce the arrangement cost of the electric control board 20.

[0031] Generally speaking, taking the outer rotor motor as an example, the electric control board 20 of the motor 1000 is generally arranged on the stator, but because the stator body 10 is arranged inside the rotor assembly 200, the arrangement space of the electric control board 20 is limited; in the related art, a bracket integrally formed with the bearing seat in the stator body 10 is provided to form a structure for accommodating the electric control board 20, but this method will increase the volume of the motor 1000 and the cost is relatively high; therefore, the present application provides a receiving groove 121 on the second part 12 of the stator body 10 to install the electric control board 20 in the receiving groove 121, thereby reducing the arrangement cost of the electric control board 20; and in order to further increase the arrangement space, at least a portion of the periphery of the second part 12 may protrude from the first The outer peripheral surface of the part 11 can further expand the space in the accommodating groove 121; it can be understood that in the outer rotor motor, the first part 11 of the stator body 10 is arranged in the rotor assembly 200, and the second part 12 of the stator body 10 extends out of the rotor assembly 200 in the axial direction of the rotor assembly 200, and at least a part of the second part 12 protrudes from the outer peripheral surface of the first part 11, so that the accommodating groove 121 set on the second part 12 can also extend outward, thereby increasing the layout space in the accommodating groove 121, which is convenient for the layout of the electric control board 20; in addition, compared with the related art, by arranging the accommodating groove 121 on the stator body 10, the cost of arranging the electric control board 20 can be reduced, and the size of the motor 1000 can be avoided to be too large.

[0032] In addition, when assembling the motor 1000, the first part 11 of the stator body 10 is arranged in the rotor assembly 200. At this time, the end face of the second part 12 close to the first part 11 is opposite to the rotor assembly 200, which is inconvenient for arranging the electric control board 20. Therefore, the accommodating groove 121 can be set on the end face of the second part 12 away from the first part 11. The end face is far away from the rotor assembly 200 and is not affected by the rotor assembly 200 when arranging the electric control board 20, which facilitates the arrangement of the electric control board 20.

[0033] Therefore, according to the stator assembly 100 in the embodiment of the utility model, by protruding at least a portion of the periphery of the second part 12 out of the first part 11 and providing a receiving groove 121 in the second part 12, sufficient accommodating space is provided for the electric control board 20, which facilitates the installation of the electric control board 20 and reduces the layout cost of the electric control board 20.

[0034] Reference Figure 1 , Figure 2 and Figure 4In some embodiments of the utility model, a clearance groove 122 is provided on the bottom surface of the accommodating groove 121, and a step structure is constructed between the bottom surface of the clearance groove 122 and the bottom surface of the accommodating groove 121. The electric control board 20 is stacked on the bottom surface of the accommodating groove 121, and there is a gap between the bottom surface of the clearance groove 122 and the electric control board 20; in this way, a clearance space can be formed in the accommodating groove 121 through the clearance groove 122 to avoid the welding boss on the electric control board 20.

[0035] Specifically, in the electric control board 20, the electronic components are arranged on the electric control board 20 by welding, wherein the electronic components can be arranged on one side of the electric control board 20, and the pins of the electronic components can pass through the electric control board 20 and extend to the other side of the electric control board 20, and the pins of the electronic components are welded on the electric control board 20, thereby forming a solder point boss on the other side of the electric control board 20. Therefore, a clearance groove 122 can be provided on the bottom surface of the receiving groove 121. When the electric control board 20 is arranged in the receiving groove 121, the clearance groove 122 is provided on the bottom surface of the receiving groove 121. 22 can avoid the structure on the electric control board 20. For example, when one side of the electric control board 20 in the accommodating groove 121 is arranged toward the first part 11, the giving way groove 122 can avoid the electronic components on the electric control board 20. For another example, when the other side of the electric control board 20 in the accommodating groove 121 is arranged toward the first part 11, the giving way groove 122 can avoid the welding boss on the electric control board 20. Therefore, the structural avoidance between the stator body 10 and the electric control board 20 can be achieved through the giving way groove 122, thereby ensuring the normal operation of the motor 1000.

[0036] In addition, a step structure can be constructed between the bottom surface of the clearance groove 122 and the bottom surface of the receiving groove 121, so that the electric control board 20 can be stacked on the receiving groove 121. At the same time, the protruding structures such as the electronic components on the electric control board 20 can be located in the clearance groove 122. In this way, the installation strength of the electric control board 20 is improved while avoiding the protruding structures of the electric control board 20.

[0037] Further, refer to Figure 4 In some embodiments of the present invention, the step height H between the bottom surface of the clearance groove 122 and the bottom surface of the accommodating groove 121 is not less than 1.5 mm, so as to avoid the welding boss on the electric control board 20 and prevent the electric control board 20 from short-circuiting.

[0038] Optionally, the step height H can be 1.6 mm, 2 mm, etc. When the stator assembly 100 is assembled, the side of the electric control board 20 with the welding boss faces the receiving groove 121. At this time, in order to avoid the welding boss from contacting the stator body 10, which may cause the electric control board 20 to short-circuit or other hazards, it is necessary to space the welding boss from the stator body 10 by a predetermined safety distance. In other words, the step height H between the bottom surface of the receiving groove 121 and the bottom surface of the clearance groove 122 can be not less than 1.5 mm to ensure that the welding boss on the electric control board 20 is insulated from the stator body 10 to avoid short-circuiting the electric control board 20. According to the aforementioned installation of the electric control board 20, the side of the electric control board 20 with the electronic components can face away from the receiving groove 121 to facilitate the heat dissipation of the electronic components and improve the working performance of the motor 1000.

[0039] Reference Figures 1 to 4 In some embodiments of the present invention, the depth dimension of the accommodating groove 121 is smaller than the thickness dimension of the second portion 12; such a configuration can avoid the structure of the stator assembly 100 from being offset.

[0040] It can be understood that in the motor 1000, a bearing is provided inside the stator assembly 100, and the rotor assembly 200 can be arranged on the bearing to facilitate the rotation of the rotor assembly 200 relative to the stator assembly 100, wherein the stator body 10 in the stator assembly 100 includes a first part 11 and a second part 12, the first part 11 is located in the rotor assembly 200, and the bearing is arranged in the first part 11, so that the rotating shaft of the rotor assembly 200 extends into the first part 11 and is arranged on the bearing. Therefore, when setting the accommodating groove 121, it is necessary to make the depth dimension of the accommodating groove 121 smaller than the thickness dimension of the second part 12, so that the accommodating groove 121 is separated from the bearing by a certain distance to avoid structural interference between the bearing and the electric control board 20 in the accommodating groove 121.

[0041] Reference Figures 1 to 4In other embodiments of the present invention, in the axial projection, at least a portion of the receiving groove 121 protrudes from the outer circumferential surface of the first portion 11; it can be understood that the receiving groove 121 is located on the second portion 12, and at least a portion of the periphery of the second portion 12 protrudes from the outer circumferential surface of the first portion 11, so that a portion of the receiving groove 121 can be arranged on at least a portion of the periphery of the second portion 12, thereby increasing the arrangement space of the receiving groove 121 and facilitating the arrangement of the electric control board 20 in the receiving groove 121; conversely, if the depth dimension of the receiving groove 121 is not less than the thickness dimension of the second portion 12, the receiving groove 121 can extend to the first portion 11 in the depth direction. At this time, since the first portion 11 of the stator body 10 needs to be arranged in the rotor assembly 200, the arrangement space of the receiving groove 121 will be limited by the rotor assembly 200, and accordingly, the volume of the electric control board 20 arranged in the receiving groove 121 also needs to be reduced, thereby affecting the operating efficiency of the motor 1000.

[0042] In combination with the foregoing, in some further embodiments of the present invention, the depth dimension of the accommodating groove 121 is smaller than the thickness dimension of the second portion 12, and in the axial projection, at least a portion of the accommodating groove 121 protrudes from the outer peripheral surface of the first portion 11; so as to avoid the internal electric control board 20 of the stator assembly 100 from abutting against the bearing structure, and at the same time, the arrangement space of the accommodating groove 121 can be further increased, so as to facilitate the arrangement of the electric control board 20 in the accommodating groove 121.

[0043] Reference Figure 1 and Figure 4 In some embodiments of the present invention, the stator body 10 has a first matching hole 13, which passes through the first part 11 and the second part 12 along the axis of the stator assembly 100 and is connected to the accommodating groove 121; in this way, the rotor assembly 200 can be conveniently rotatably arranged on the stator body 10.

[0044] In combination with the aforementioned embodiments, in the structure of the motor 1000, the stator body 10 has a first matching hole 13, and the bearing can be arranged in the first matching hole 13, wherein the bearing can be located in the first part 11 of the stator body 10 to facilitate the rotating shaft in the rotor assembly 200 to extend into the first matching hole 13 and be arranged on the bearing, so that when the motor 1000 is working, the rotor assembly 200 can rotate relative to the stator assembly 100 to realize the power output of the motor 1000.

[0045] Reference Figure 1 and Figure 4In some embodiments of the utility model, a second matching hole 21 is provided on the electric control board 20, and the second matching hole 21 is axially opposite to the first matching hole 13. In this way, through the second matching hole 21, the electric control board 20 and the rotor assembly 200 can avoid each other, avoid structural interference, and ensure the normal operation of the motor 1000.

[0046] In detail, a rotating shaft is provided in the rotor assembly 200, and the rotating shaft is arranged in the first matching hole 13. In combination with the aforementioned embodiment, the first matching hole 13 passes through the first part 11 and the second part 12. Therefore, since the accommodating groove 121 is arranged on the second part 12, when the rotor assembly 200 rotates, the rotating shaft of the rotor assembly 200 will structurally abut against the electric control board 20 in the accommodating groove 121. Therefore, a second matching hole 21 can be provided on the electric control board 20, and the second matching hole 21 and the first matching hole 13 are arranged opposite to each other in the axial direction of the stator body 10, so that the rotating shaft of the rotor assembly 200 can be conveniently extended into the first matching hole 13 and the second matching hole 21 in sequence, so that the rotating shafts of the electric control board 20 and the rotor assembly 200 avoid each other, avoid structural abutment, and ensure the normal operation of the motor 1000.

[0047] Reference Figure 1 and Figure 3 In some embodiments of the utility model, a wire groove portion is provided on the peripheral wall of the accommodating groove 121, and the wire groove portion has a wire groove 123. The wire groove 123 extends along the radial direction of the stator body 10, and the wire groove 123 passes through the peripheral wall of the accommodating groove 121. This arrangement can make the wiring harness in the motor 1000 neatly arranged and convenient for electrical connection with an external power supply.

[0048] Specifically, the electric control board 20 is disposed in the receiving groove 121, the wire harness can be electrically connected to the electric control board 20, and the wire harness can be led out from the peripheral wall of the receiving groove 121, wherein the wire harness can be arranged on the wire groove portion, more specifically, the wire harness can pass through the wire groove 123, and the wire groove 123 can guide the wire harness to extend along the radial direction of the stator body 10, thereby leading out of the motor 1000 to be electrically connected to an external power source. In addition, the wire groove 123 can also be used to position the wire harness to prevent the wire harness from being scattered.

[0049] Furthermore, in some specific examples, since multiple wire harnesses are connected to the electric control board 20, the corresponding wire groove portion also has multiple wire grooves 123, and the multiple wire harnesses are respectively arranged on the multiple wire grooves 123. The multiple wire harnesses can be guided to extend radially from the stator body 10 through the multiple wire grooves, thereby neatly leading out the motor 1000, which is convenient for the electrical connection between the wire harness and the external power supply.

[0050] In some embodiments of the utility model, the stator body 10 is integrally formed, and a wire slot portion is locally constructed on the stator body 10. This arrangement can improve the overall structural strength of the stator body 10, increase the durability and reliability of the motor 1000, and during the assembly process of the motor 1000, reduce the number of parts required for the assembly of the motor 1000, simplify the assembly process, and also reduce assembly problems caused by component processing errors.

[0051] Alternatively, in some embodiments of the present invention, the wire slot portion is arranged on the peripheral wall of the receiving slot 121, and the stator body 10 and the receiving slot 121 are secondary injection molded with different materials; such an arrangement can make the receiving slot 121 have a good insulation effect and avoid electrical failures.

[0052] Optionally, the accommodating groove 121 can be secondary injection molded with the stator body 10 through a resin material. In this way, the electric control board 20 arranged in the accommodating groove 121 can be insulated from the iron core and / or the wire on the stator body 10 through the resin material to avoid a short circuit caused by the wiring harness connected to the electric control board 20 contacting the iron core and / or the wire in the stator body 10.

[0053] Reference Figure 3 and Figure 4 According to the motor 1000 in the embodiment of the present utility model, the motor 1000 includes a rotor assembly 200 and the stator assembly 100 in the above embodiment.

[0054] The first part 11 is assembled on the radial inner side of the rotor assembly 200 , and the stator assembly 100 is configured to drive the rotor assembly 200 to rotate. By applying the aforementioned stator assembly 100 , the layout cost of the electric control board 20 can be reduced, and the motor 1000 can be made thinner and lighter.

[0055] Specifically, taking the external rotor motor as an example, the first part 11 of the stator assembly 100 is transferred to the radial inner side of the rotor assembly 200, and the second part 12 of the stator assembly 100 is located outside the rotor assembly 200, wherein at least a part of the periphery of the second part 12 protrudes from the outer peripheral surface of the first part 11 in the radial direction of the rotor assembly 200, and a receiving groove 121 is provided on the end surface of the second part 12 away from the first part 11, so that the electric control board 20 can be conveniently arranged on the stator body 10, and the space of the receiving groove 121 can be further increased to meet the arrangement requirements of the electric control board 20.

[0056] Further, a clearance groove 122 is provided on the bottom surface of the receiving groove 121, and a step structure is constructed between the bottom surface of the clearance groove 122 and the bottom surface of the receiving groove 121. The step structure can facilitate the stacking of the electric control board 20 on the bottom surface of the receiving groove 121, and the protruding structure on the electric control board 20 can also be located in the clearance groove 122 to achieve avoidance, so as to prevent the protruding structure (electronic components, welding bosses, etc.) on the electric control board 20 from abutting against the structure of the stator body 10. Optionally, the step height between the bottom surface of the clearance groove 122 and the bottom surface of the receiving groove 121 is 1.6 mm, 2.0 mm, etc.

[0057] Furthermore, the stator body 10 has a first matching hole 13, and the first matching hole 13 can be used to place a bearing, so that the rotating shaft in the rotor assembly 200 can extend into the first matching hole 13 and be set on the bearing, and then the rotor assembly 200 can rotate relative to the stator assembly 100; in addition, a second matching hole 21 is provided on the electronic control board 20, and the second matching hole 21 and the first matching hole 13 can be opposite to each other in the axial direction of the stator body 10 to avoid the rotating shaft in the rotor assembly 200, avoid structural interference, and ensure the good operation of the motor 1000.

[0058] Furthermore, a wire groove portion is provided on the peripheral wall of the receiving groove 121, and the wire groove portion has a wire groove 123, which can lead the wire harness in the stator assembly 100 along the radial direction of the stator body 10, so that the wire harness in the motor 1000 is neatly arranged and can be conveniently electrically connected to the external power supply of the motor 1000. In addition, the receiving groove 121 can be secondary injection molded with the stator body 10 through a resin material to facilitate the insulation setting of the electric control board 20 and the iron core and / or wire on the stator body 10, thereby avoiding hazards such as short circuits in the electric control board 20.

[0059] Reference Figure 3 and Figure 4 In some embodiments of the present invention, in the axial projection of the stator body 10, the periphery of the second part 12 protrudes from the inner circumferential surface of the rotor assembly 200 and is axially opposite to the peripheral wall of the rotor assembly 200; in this way, the accommodating groove 121 arranged on the second part 12 can follow the periphery of the second part 12 protruding from the inner circumferential surface of the rotor assembly 200 to further expand the layout space in the accommodating groove 121 to meet the space layout requirements of the electric control board 20.

[0060] In some specific examples of the present invention, the outer rotor motor includes: a stator assembly 100, a rotor assembly 200 and an electric control board 20, wherein the stator assembly 100 is assembled on the radial inner side of the rotor assembly 200, a receiving groove 121 is provided on the inner side of the end of the stator assembly 100, and the electric control board 20 is placed in the receiving groove 121 of the stator assembly 100.

[0061] In some specific examples of the present invention, the outer side of the end of the stator assembly 100 protrudes beyond the outer diameter of the core of the stator assembly 100, so that there can be enough space for setting the stator assembly 100 accommodating slot 121, and the stator assembly 100 mounting foot is connected to the outer side of the end of the stator assembly 100.

[0062] In some specific examples of the present invention, the end of the stator assembly 100 is opposite to the rotor assembly 200 along the axial direction of the rotor assembly 200 to ensure that the set receiving slot 121 has sufficient adjustment space.

[0063] In some specific examples of the present invention, a step structure is provided inside the receiving groove 121 of the stator assembly 100, the purpose of which is to avoid the welding point boss of the electric control board 20, and the height H of the step can be greater than 1.5 mm.

[0064] In some specific examples of the present invention, the receiving groove 121 of the stator assembly 100 is made of resin material. By being integrally molded with the stator assembly 100, the receiving groove 121 has a good insulation effect, and there is no need to subsequently place an insulating component, which saves costs and reduces the weight of the motor 1000.

[0065] In some specific examples of the present invention, the receiving groove 121 of the stator assembly 100 is also provided with a stop surface, the purpose of which is to cooperate with the end cover to achieve sealing of the bearing and the electric control board 20.

[0066] In some specific examples of the present invention, the receiving slot 121 of the stator assembly 100 is also provided with a power line slot, which is integrally molded with the receiving slot 121 (the material of the power line slot can be consistent with that of the receiving slot 121, or an insert of other materials can be embedded in the receiving slot 121 of the stator assembly 100) for placing and fixing the power lead.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stator assembly, characterized in that: include: A stator body (10), the stator body (10) having a first part (11) and a second part (12) in the axial direction, at least a portion of the periphery of the second part (12) protruding from the outer peripheral surface of the first part (11), and an accommodating groove (121) being provided on the end surface of the second part (12) facing away from the first part (11); An electric control board (20), wherein the electric control board (20) is arranged in the containing groove (121).

2. The stator assembly according to claim 1, characterized in that: A clearance groove (122) is provided on the bottom surface of the receiving groove (121), a step structure is constructed between the bottom surface of the clearance groove (122) and the bottom surface of the receiving groove (121), the electric control board (20) is stacked on the bottom surface of the receiving groove (121), and there is a gap between the bottom surface of the clearance groove (122) and the electric control board (20).

3. The stator assembly according to claim 2, characterized in that: The step height between the bottom surface of the clearance groove (122) and the bottom surface of the receiving groove (121) is not less than 1.5 mm.

4. The stator assembly according to claim 1, characterized in that: The depth dimension of the accommodating groove (121) is smaller than the thickness dimension of the second part (12); And / or, in the projection in the axial direction, at least a portion of the accommodating groove (121) protrudes from the outer peripheral surface of the first part (11).

5. The stator assembly according to claim 1, characterized in that: The stator body (10) has a first matching hole (13), the first matching hole (13) passes through the first part (11) and the second part (12) along the axis of the stator assembly and is connected to the accommodating groove (121).

6. The stator assembly according to claim 5, characterized in that: The electric control board (20) is provided with a second matching hole (21), and the second matching hole (21) is opposite to the first matching hole (13) along the axial direction.

7. The stator assembly according to claim 1, characterized in that: A wire groove portion is provided on the peripheral wall of the containing groove (121), and the wire groove portion has a wire groove (123). The wire groove (123) extends in the radial direction of the stator body (10), and the wire groove (123) passes through the peripheral wall of the containing groove (121).

8. The stator assembly according to claim 7, characterized in that: The stator body (10) is integrally formed, and the wire groove portion is partially constructed on the stator body (10); or, the wire groove portion is arranged on the peripheral wall of the accommodating groove (121), and the stator body (10) and the accommodating groove (121) are secondary injection molded with different materials.

9. A motor, characterized in that: include: Rotor assembly (200); According to the stator assembly according to any one of claims 1 to 8, the first part (11) is assembled on the radial inner side of the rotor assembly (200), and the stator assembly is configured to drive the rotor assembly (200) to rotate.

10. The motor according to claim 9, characterized in that In the projection in the axial direction, the peripheral edge of the second portion (12) protrudes from the inner peripheral surface of the rotor assembly (200) and is opposite to the peripheral wall of the rotor assembly (200) along the axial direction.

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