Stator assembly and motor

Abstract

The utility model discloses a stator assembly and a motor, and the stator assembly comprises an iron core body which is provided with a first connecting part; and the insulating framework is assembled and connected with the iron core body, the insulating framework is of an integrated structure and is made of a heat-resistant material, and a second connecting part connected with the first connecting part is arranged on the insulating framework. According to the utility model, the iron core body is assembled by adopting the insulating framework with the integrated structure, so that riveting points or welding points do not need to be arranged on the iron core body, the iron loss of the stator iron core is reduced, and the motor efficiency is improved. According to the utility model, by adopting the heat-resistant insulating framework, the condition that the insulating framework is burnt and melted under the condition that the power of the motor is too large or the ambient temperature is too high is prevented, so that the service life of the motor is prolonged, and the insulating framework can be sintered and molded in the stress relief annealing process of the motor iron core, so that the service life of the motor is prolonged. Therefore, the subsequent assembly process is omitted, and the production efficiency is improved.

Description

Technical Field

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

[0002] Motors such as generators and motors are composed of components such as a stator assembly and a rotor assembly. The stator consists of three parts: a stator core, a stator winding, and a frame. The main function of the stator assembly is to generate a rotating magnetic field, while the main function of the rotor assembly is to be cut by magnetic lines of force in the rotating magnetic field to generate (output) current, or to generate (output) torque and rotational speed under the action of the rotating magnetic field.

[0003] The stator assembly mainly includes a stator core and an insulating skeleton assembled on the stator core. As Figure 1 and Figure 2 shown, the current stator assembly mainly forms the stator core and the insulating skeleton by stamping and riveting or welding. Among them, a buckle point 14 is provided on the stator core for fixing the single piece of the core, and a positioning pin 25 is provided on the insulating skeleton for positioning and fixing during the forming process. However, the riveting points in stamping and riveting or the welding points in the welding method (i.e., Figure 2 the buckle point 14 in

[0004] Figure 2 ) will cause the single pieces of the stator core to conduct, which will increase the iron loss of the core and then lead to a decrease in the motor efficiency. In view of the above conduction problem, the prior art proposes a method using a self-bonding coating, that is, by using an insulating coating of electrical steel with a bonding function, the single pieces are bonded to each other to form a core, thereby canceling the connection structure that will cause conduction. However, the core formed by this method cannot be annealed, that is, the stress relief and recrystallization effects generated by annealing cannot be used to further improve the motor efficiency.

[0005] In addition, in order to ensure insulation between the stator assembly and the winding, the prior art generally uses a plastic insulating skeleton that is easy to form for assembly, and then winds the winding around the plastic insulating skeleton. However, in the case of too high motor power or too high ambient temperature, the plastic insulating skeleton may be melted, which may lead to motor damage. Summary of the Utility Model

[0006] Embodiments of the utility model provide a stator assembly and a motor, aiming to reduce the iron loss of the stator core, improve the motor efficiency, and increase the service life of the motor.

[0007] Embodiments of the utility model provide a stator assembly, including:

[0008] A core body, on which a first connecting portion is provided;

[0009] An insulating skeleton, which is assembled and connected to the iron core body. The insulating skeleton is of an integral structure and made of a heat-resistant material. A second connecting portion connected to the first connecting portion is provided on the insulating skeleton.

[0010] Furthermore, the heat-resistant material is a ceramic material.

[0011] Furthermore, the iron core body includes a plurality of yoke portions and a plurality of tooth portions respectively arranged on the outer side and the inner side of the iron core body. The first connecting portion is axially arranged on the yoke portion, and the second connecting portion is axially arranged on the insulating skeleton.

[0012] Furthermore, the first connecting portion is arranged at the position where the yoke portion intersects with the tooth portion.

[0013] Furthermore, a plurality of the first connecting portions are arranged at intervals along the circumferential direction of the iron core body, and a plurality of the second connecting portions are arranged at intervals along the circumferential direction of the insulating skeleton.

[0014] Furthermore, the first connecting portion is a connecting hole which is not communicated with the outer edge of the yoke portion, and the second connecting portion is a connecting column.

[0015] Furthermore, the connecting hole is a cylindrical connecting hole, and the connecting column is of a cylindrical structure.

[0016] Furthermore, the first connecting portion is a connecting groove with an opening, and the opening side of the connecting groove is communicated with the outer edge of the yoke portion, and the second connecting portion is a connecting column.

[0017] Furthermore, the connecting groove is an arc-shaped connecting groove.

[0018] Furthermore, the insulating skeleton includes an inner baffle, an outer baffle and a tooth baffle; the inner baffle is assembled on the inner side of the yoke portion, the outer baffle is assembled on the outer side of the yoke portion, and the tooth baffle is assembled in cooperation with the tooth portion.

[0019] The embodiment of the present utility model provides a stator assembly and a motor. The stator assembly includes: a core body, on which a first connecting portion is provided; an insulating skeleton, which is assembled and connected with the core body. The insulating skeleton is of an integral structure and made of a heat-resistant material, and a second connecting portion connected to the first connecting portion is provided on the insulating skeleton. In the embodiment of the present utility model, the stator assembly specifically includes a core body and an insulating skeleton assembled on the core body. Among them, a first connecting portion is provided on the core body, and a corresponding second connecting portion is provided on the insulating skeleton. By passing the second connecting portion through the first connecting portion, the functions of fixing and locking the core body can be realized. In the embodiment of the present utility model, by using an insulating skeleton of an integral structure to assemble the core body and making the second connecting portion on the insulating skeleton cooperate with the first connecting portion on the core body, there is no need to provide riveting points or welding points on the core body, thereby reducing the iron loss of the stator core and improving the motor efficiency. At the same time, in the embodiment of the present utility model, a heat-resistant material is also used to prepare the insulating skeleton, so that it can prevent the insulating skeleton from melting in the case of too large motor power or too high ambient temperature, etc., thereby improving the service life of the motor, and the insulating skeleton can also be sintered and formed during the stress relief annealing process of the motor core, thus saving the subsequent assembly process and further improving the production efficiency. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is an assembly schematic diagram of a stator assembly in the prior art;

[0022] Figure 2 It is a schematic structural diagram of a stator core in a stator assembly in the prior art;

[0023] Figure 3 It is an assembly schematic diagram of a stator assembly provided by the embodiment of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of a core body in a stator assembly provided by the embodiment of the present utility model;

[0025] Figure 5 It is another assembly schematic diagram of a stator assembly provided by the embodiment of the present utility model;

[0026] Figure 6 It is another schematic structural diagram of a core body in a stator assembly provided by the embodiment of the present utility model;

[0027] Figure 7 A preparation flow chart of a motor provided by an embodiment of the present utility model.

[0028] Identifications in the figure:

[0029] 1. Iron core body;

[0030] 2. Insulation skeleton;

[0031] 11. Second connection part; 12. Yoke part; 13. Tooth part; 14. Buckle point;

[0032] 21. Second connection part; 22. Inner baffle; 23. Outer baffle; 24. Tooth part baffle; 25. Positioning pin. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0035] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0036] It should be further understood that the term "and / or" used in this specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0037] Next, please refer to Figure 3 and Figure 4 , a stator assembly provided by an embodiment of the present utility model, includes:

[0038] An iron core body 1, on which a first connection part 11 is provided;

[0039] The insulating skeleton 2 is assembled and connected to the iron core body 1. The insulating skeleton 2 is of an integral structure and made of heat-resistant material. A second connecting portion 21 connected to the first connecting portion 11 is provided on the insulating skeleton 2.

[0040] In this embodiment, the stator assembly specifically includes an iron core body 1 and an insulating skeleton 2 assembled on the iron core body 1. Among them, a first connecting portion 11 is provided on the iron core body 1, and a corresponding second connecting portion 21 is provided on the insulating skeleton 2. By passing the second connecting portion 21 through the first connecting portion 11, the functions of fixing and locking the iron core body 1 can be achieved. In this embodiment, the iron core body 1 is assembled by using an insulating skeleton 2 of an integral structure, and the second connecting portion 21 on the insulating skeleton 2 is matched with the first connecting portion 11 on the iron core body 1. In this way, there is no need to set riveting points or welding points on the iron core body 1, thereby reducing the iron loss of the stator core and improving the motor efficiency. At the same time, in this embodiment, the insulating skeleton 2 is also made of heat-resistant material, so that the situation of the insulating skeleton 2 melting can be prevented under the conditions of too large motor power or too high ambient temperature, etc., thereby improving the service life of the motor. And the insulating skeleton 2 can also be sintered and formed during the stress relief annealing process of the motor iron core, so that the subsequent assembly process is omitted, and the production efficiency is further improved.

[0041] In one embodiment, the iron core body 1 includes a plurality of yoke portions 12 and a plurality of tooth portions 13 respectively provided on the outer side and the inner side of the iron core body 1. The first connecting portion 11 is axially provided on the yoke portion 12, and the second connecting portion 21 is axially provided on the insulating skeleton 2.

[0042] Specifically, the first connecting portion 11 is provided at the position where the yoke portion 12 intersects with the tooth portion 13.

[0043] Further, a plurality of the first connecting portions 11 are arranged at intervals along the circumferential direction of the iron core body 1, and a plurality of the second connecting portions 21 are arranged at intervals along the circumferential direction of the insulating skeleton 2.

[0044] In this embodiment, the iron core body 1 is provided with a plurality of yoke portions 12 and a plurality of tooth portions 13, and the plurality of yoke portions 12 are arranged in a surrounding manner. In an actual application scenario, the iron core body 1 is formed by stacking a plurality of identical single pieces, and each single piece is provided with a plurality of yoke portions 12 and a plurality of tooth portions 13. And the first connecting portion 11 is provided at the position where the yoke portion 12 intersects with the tooth portion 13.

[0045] In a specific embodiment, the first connecting portion 11 is a connecting hole, and the connecting hole is not communicated with the outer edge of the yoke portion 12. The second connecting portion 21 is a connecting column.

[0046] Specifically, the connection hole is a cylindrical connection hole, and the connection post is of a cylindrical structure.

[0047] Combined with Figure 3 and Figure 4 , a first connection portion 11 is provided inside the yoke portion 12 of the iron core body 1. Correspondingly, the second connection portion 21 is provided inside the outer baffle 23 so that the second connection portion 21 can smoothly pass through the first connection portion 11 to achieve the fixing and locking functions of the iron core body.

[0048] In another specific embodiment, the first connection portion 11 is a connection groove with an opening, and the opening side of the connection groove communicates with the outer edge of the yoke portion 12. The second connection portion 21 is a connection post.

[0049] Specifically, the connection groove is an arc-shaped connection groove.

[0050] Combined with Figure 5 and Figure 6 , in this embodiment, a first connection portion 11 is provided outside the yoke portion 12 to replace the first connection portion 11 provided inside the yoke portion 12. That is, a connection groove with an opening is provided on the outer wall of the yoke portion 12, and this connection groove is used as the first connection portion 11. Correspondingly, a connection post is provided outside the outer baffle 23 as the second connection portion 21 and is adapted to the connection groove on the outside, so that the influence on the magnetic circuit of the iron core body 1 can be reduced, thereby further improving the motor efficiency.

[0051] In one embodiment, the insulating skeleton 2 includes an inner baffle 22, an outer baffle 23, and a tooth baffle 24; the inner baffle 22 is assembled inside the yoke portion 12, the outer baffle 23 is assembled outside the yoke portion 12, and the tooth baffle 24 is assembled in cooperation with the tooth portion 13.

[0052] In some alternative embodiments, the size of the yoke portion 12 is designed with an outer diameter of 100 mm and an inner diameter of 86 mm, the width of the tooth portion 13 is designed to be 9 mm, and the diameter of the first connection portion 11 is designed to be 2 mm.

[0053] The height of the inner baffle 22 is designed to be 10 mm, the height of the outer baffle 23 is designed to be 15 mm, the width of the tooth baffle 24 is designed to be 9 mm, and the outer diameter of the second connection portion 21 is designed to be 2 mm.

[0054] In some other alternative embodiments, the size of the yoke portion 12 is designed with an outer diameter of 110 mm and an inner diameter of 96 mm, the width of the tooth portion 13 is designed to be 15 mm, and the diameter of the first connection portion 11 is designed to be 4 mm.

[0055] The height of the inner baffle 22 is designed to be 15 mm, the height of the outer baffle 23 is designed to be 20 mm, the width of the tooth baffle 24 is designed to be 14 mm, and the outer diameter of the second connecting portion 21 is designed to be 4 mm.

[0056] In some other alternative embodiments, the size of the yoke portion 12 is designed to have an outer diameter of 90 mm and an inner diameter of 76 mm, the width of the tooth portion 13 is designed to be 5 mm, and the diameter of the first connecting portion 11 is designed to be 1 mm.

[0057] The height of the inner baffle 22 is designed to be 6 mm, the height of the outer baffle 23 is designed to be 10 mm, the width of the tooth baffle 24 is designed to be 5 mm, and the outer diameter of the second connecting portion 21 is designed to be 1 mm.

[0058] In one embodiment, the heat-resistant material is a ceramic material.

[0059] Furthermore, the ceramic material is made by sintering ceramic powder.

[0060] Specifically, the composition of the ceramic powder includes at least one of silicon dioxide, aluminum oxide, zirconium dioxide, magnesium oxide, zinc oxide, boron trioxide, and lead oxide.

[0061] In this embodiment, a ceramic material is used as the heat-resistant material to sinter and prepare the insulating skeleton 2, which can avoid the situation where the insulating skeleton 2 melts when the motor power is too large or the ambient temperature is too high, etc., thereby improving the service life of the motor. Of course, in other embodiments, other heat-resistant materials can also be considered to sinter and prepare the insulating skeleton 2, such as water glass (sodium silicate), spodumene, and so on.

[0062] In some alternative embodiments, the composition of the ceramic powder includes lead oxide, boron trioxide, and zinc oxide. The mass ratio of lead oxide is 55% - 65%, the mass ratio of boron trioxide is 20% - 30%, and the mass ratio of zinc oxide is 10% - 20%.

[0063] For example, the mass ratio of lead oxide is 60%, the mass ratio of boron trioxide is 25%, and the mass ratio of zinc oxide is 15%. The following provides several composition examples of ceramic powder.

[0064] Example 1: The composition of the ceramic powder includes: silicon dioxide, magnesium oxide, and boron trioxide;

[0065] Among them, the mass ratio of silicon dioxide is 55% - 65%, the mass ratio of magnesium oxide is 10% - 20%, and the mass ratio of boron trioxide is 20% - 30%.

[0066] For example, the mass ratio of the silica is 60%, the mass ratio of the magnesium oxide is 15%, and the mass ratio of the boron trioxide is 25%.

[0067] Example 2: The composition of the ceramic powder includes: aluminum oxide, zirconium dioxide, zinc oxide;

[0068] Among them, the mass ratio of the aluminum oxide is 50% - 60%, the mass ratio of the zirconium dioxide is 10% - 20%, and the mass ratio of the zinc oxide is 20% - 30%.

[0069] For example, the mass ratio of the silica is 55%, the mass ratio of the magnesium oxide is 15%, and the mass ratio of the boron trioxide is 30%.

[0070] Example 3: The composition of the ceramic powder includes: zirconium dioxide, magnesium oxide, lead oxide;

[0071] Among them, the mass ratio of the silica is 50% - 60%, the mass ratio of the magnesium oxide is 20% - 30%, and the mass ratio of the boron trioxide is 10% - 20%.

[0072] For example, the mass ratio of the silica is 60%, the mass ratio of the magnesium oxide is 25%, and the mass ratio of the boron trioxide is 15%.

[0073] Example 4: The composition of the ceramic powder includes: silica, zinc oxide;

[0074] Among them, the mass ratio of the silica is 70% - 90%, and the mass ratio of the zinc oxide is 10% - 30%.

[0075] For example, the mass ratio of the silica is 80%, and the mass ratio of the zinc oxide is 20%.

[0076] Example 5: The composition of the ceramic powder includes: zirconium dioxide, boron trioxide;

[0077] Among them, the mass ratio of the zirconium dioxide is 70% - 90%, and the mass ratio of the boron trioxide is 10% - 30%.

[0078] For example, the mass ratio of the zirconium dioxide is 80%, and the mass ratio of the boron trioxide is 20%.

[0079] Example 6: The composition of the ceramic powder includes: silica, magnesium oxide, boron trioxide and lead oxide;

[0080] Among them, the mass ratio of the silica is 45% - 55%, the mass ratio of the magnesium oxide is 10% - 20%, the mass ratio of the boron trioxide is 10% - 20%, and the mass ratio of the lead oxide is 10% - 20%.

[0081] For example, the mass ratio of the silica is 50%, the mass ratio of the magnesium oxide is 15%, the mass ratio of the boron trioxide is 15%, and the mass ratio of the lead oxide is 20%.

[0082] In some alternative embodiments, when sintering the insulating skeleton 2 using the ceramic powder, an additive is added during the sintering process.

[0083] Furthermore, the additive is a sintering binder or a flux.

[0084] The insulating skeleton 2 made of ceramic material in this embodiment is sintered from finely ground ceramic powder with an additive. The additives here include two categories:

[0085] One category is the sintering binder, generally an organic powder, whose function is to bond the ceramic powder together during sintering, and the organic component is burned out when sintering is completed;

[0086] The other category is the flux (or sintering aid), generally a metal oxide or inorganic salt, etc., which reduces the ceramic sintering temperature by affecting the crystal structure.

[0087] Several examples of ceramic powder and additives are provided below.

[0088] Example 1: The composition of the ceramic powder includes: silica, magnesium oxide, and boron trioxide; the additive is a sintering binder;

[0089] Among them, the mass ratio of the silica is 55% - 65%, the mass ratio of the magnesium oxide is 10% - 20%, and the mass ratio of the boron trioxide is 20% - 30%.

[0090] For example, the mass ratio of the silica is 60%, the mass ratio of the magnesium oxide is 15%, and the mass ratio of the boron trioxide is 25%.

[0091] Example 2: The composition of the ceramic powder includes: silica, magnesium oxide, and boron trioxide; the additive is a flux;

[0092] Among them, the mass ratio of the silica is 55% - 65%, the mass ratio of the magnesium oxide is 10% - 20%, and the mass ratio of the boron trioxide is 20% - 30%.

[0093] For example, the mass ratio of the silica is 60%, the mass ratio of the magnesium oxide is 15%, and the mass ratio of the boron trioxide is 25%.

[0094] Example 3: The composition of the ceramic powder includes: aluminum trioxide, zirconium dioxide, zinc oxide; the additive is a sintering binder;

[0095] Among them, the mass ratio of the aluminum trioxide is 50% - 60%, the mass ratio of the zirconium dioxide is 10% - 20%, and the mass ratio of the zinc oxide is 20% - 30%.

[0096] For example, the mass ratio of the silica is 55%, the mass ratio of the magnesium oxide is 15%, and the mass ratio of the boron trioxide is 30%.

[0097] Example 4: The components of the ceramic powder include: zirconia, magnesium oxide, and lead oxide; the auxiliary agent is a flux;

[0098] Among them, the mass ratio of the silica is 50% - 60%, the mass ratio of the magnesium oxide is 20% - 30%, and the mass ratio of the boron trioxide is 10% - 20%.

[0099] For example, the mass ratio of the silica is 60%, the mass ratio of the magnesium oxide is 25%, and the mass ratio of the boron trioxide is 15%.

[0100] Example 5: The components of the ceramic powder include: silica and zinc oxide; the auxiliary agent is a sintering aid;

[0101] Among them, the mass ratio of the silica is 70% - 90%, and the mass ratio of the zinc oxide is 10% - 30%.

[0102] For example, the mass ratio of the silica is 80%, and the mass ratio of the zinc oxide is 20%.

[0103] Example 6: The components of the ceramic powder include: zirconia and boron trioxide; the auxiliary agent is a sintering binder;

[0104] Among them, the mass ratio of the zirconia is 70% - 90%, and the mass ratio of the boron trioxide is 10% - 30%.

[0105] For example, the mass ratio of the zirconia is 80%, and the mass ratio of the boron trioxide is 20%.

[0106] Example 7: The components of the ceramic powder include: silica, magnesium oxide, boron trioxide, and lead oxide; the auxiliary agent is a flux;

[0107] Among them, the mass ratio of the silica is 45% - 55%, the mass ratio of the magnesium oxide is 10% - 20%, the mass ratio of the boron trioxide is 10% - 20%, and the mass ratio of the lead oxide is 10% - 20%.

[0108] For example, the mass ratio of the silica is 50%, the mass ratio of the magnesium oxide is 15%, the mass ratio of the boron trioxide is 15%, and the mass ratio of the lead oxide is 20%.

[0109] The present utility model also provides an embodiment of a motor, including the stator assembly described in any one of the above.

[0110] In an actual application scenario, such as Figure 7As shown, when preparing the motor through the stator assembly, the following steps are specifically included:

[0111] Step S101: Place the iron core body 1 into the sintering mold;

[0112] Step S102: Fill the parts that need to sinter the insulating skeleton 2 with the evenly mixed fine-ground ceramic powder;

[0113] Step S103: Compact the fine-ground ceramic powder and close the sintering mold;

[0114] Step S104: Control the sintering pressure to be greater than 20 MPa, heat the sintering mold to 750 °C, and keep it warm for 120 min to perform stress relief annealing of the motor iron core and sintering of the insulating skeleton 2;

[0115] Step S105: After sintering, open the sintering mold to obtain the insulating skeleton 2 with an upper and lower integrated structure and the iron core body 1 corresponding to its structure;

[0116] Step S106: Assemble the insulating skeleton 2 and the iron core body 1 into a stator assembly, wind the winding on the stator assembly, and then manufacture the corresponding rotor to obtain the motor.

[0117] In this embodiment, first place the iron core body 1 into the sintering mold, then fill the parts that need to sinter the insulating skeleton 2 with the evenly mixed fine-ground ceramic powder, and then compact the fine-ground ceramic powder and close the sintering mold. Control the sintering pressure to be greater than 20 MPa, heat the sintering mold to 750 °C and keep it warm for 120 min to perform stress relief annealing of the motor iron core and sintering of the insulating skeleton 2. After sintering, open the sintering mold to obtain the insulating skeleton 2 with an upper and lower integrated structure and the motor iron core corresponding to its structure. After winding the winding and manufacturing the corresponding rotor, the motor can be obtained.

[0118] The prior art mainly includes the following three methods when preparing the motor:

[0119] Stamping: Make single sheets of electrical steel with buckles, rivet the buckles to make the single sheets into an iron core, then heat-treat the iron core (heat treatment can improve the motor performance), and then install the upper and lower insulating skeletons 2 (generally injection-molded parts), and finally wind the wire to make the motor stator.

[0120] Welding: Make single sheets of electrical steel without buckles, stack the single sheets together and weld them into an iron core, then heat-treat the iron core, and then install the upper and lower insulating skeletons 2, and finally wind the wire to make the motor stator.

[0121] Gluing: Make single sheets of electrical steel without buckles, apply glue to bond the single sheets into an iron core (the glue cannot be heat-treated), then install the upper and lower insulating skeletons 2, and finally wind the wire to make the motor stator.

[0122] Compared with the prior art, for the motor manufactured in this embodiment, by eliminating the riveting points or welding points of the motor core, the iron loss of the motor core is reduced and the motor efficiency is improved, and the melting of the insulating skeleton 2 caused by excessive motor power or too high ambient temperature can be prevented. Moreover, this embodiment can also perform heat treatment, which can further improve the motor performance.

[0123] The various embodiments in the specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0124] It should also be noted that in this specification, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

Claims

1. A stator assembly, characterized in that: include: An iron core body, wherein a first connecting portion is provided on the iron core body; An insulating skeleton is assembled and connected with the core body. The insulating skeleton is an integrated structure and is made of heat-resistant material. A second connecting portion connected to the first connecting portion is provided on the insulating skeleton.

2. The stator assembly according to claim 1, characterized in that: The heat-resistant material is a ceramic material.

3. The stator assembly according to claim 1, characterized in that: The core body includes a plurality of yokes and a plurality of teeth respectively arranged on the outer side and the inner side of the core body, the first connecting portion is axially arranged on the yoke, and the second connecting portion is axially arranged on the insulating frame.

4. The stator assembly according to claim 3, characterized in that: The first connecting portion is disposed on the yoke at a position where the first connecting portion intersects with the tooth portion.

5. The stator assembly according to claim 3 or 4, characterized in that: A plurality of first connection parts are arranged at intervals along the circumferential direction of the core body, and a plurality of second connection parts are arranged at intervals along the circumferential direction of the insulating frame.

6. The stator assembly according to claim 3 or 4, characterized in that: The first connection portion is a connection hole, which is not connected to the outer edge of the yoke, and the second connection portion is a connection column.

7. The stator assembly according to claim 6, characterized in that The connecting hole is a cylindrical connecting hole, and the connecting column is a cylindrical structure.

8. The stator assembly according to claim 3 or 4, characterized in that: The first connecting portion is a connecting groove with an opening, one side of the opening of the connecting groove is connected to the outer edge of the yoke, and the second connecting portion is a connecting column.

9. The stator assembly according to claim 8, characterized in that The connecting groove is an arc-shaped connecting groove.

10. The stator assembly according to claim 1, characterized in that The insulating frame includes an inner baffle, an outer baffle and a tooth baffle; the inner baffle is assembled on the inner side of the yoke, the outer baffle is assembled on the outer side of the yoke, and the tooth baffle is assembled in cooperation with the tooth.

11. A motor, characterized in that: It comprises the stator assembly according to any one of claims 1 to 10.

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