A stator structure and motor

Abstract

The utility model discloses a stator structure and a motor, wherein the stator structure comprises: a stator core, wherein the stator core has a first surface and a second surface opposite to each other, wherein the first surface has stator teeth; a winding, wherein the winding is wound on the stator teeth of the stator core; a housing, wherein the housing has an annular groove for accommodating the stator core, wherein the second surface faces the bottom surface of the annular groove; and a spacer assembly, wherein the spacer assembly is used to divide the space in the annular groove to form a first cooling channel located on the first surface and a second cooling channel located on the second surface. The stator structure provided by the utility model can cool both sides of the stator core by forming a first cooling channel on the first surface of the stator core and a second cooling channel on the second surface of the stator core, thereby improving the heat dissipation effect of the stator core, thereby indirectly improving the heat dissipation effect of the winding, and thereby improving the heat dissipation effect of the overall stator structure.

Description

Technical Field

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

[0002] As the demand for motor performance increases, the motor structure becomes more compact, with high power density and high efficiency. However, there are also problems of high heat generation and low heat dissipation performance.

[0003] Taking the axial flux permanent magnet motor as an example, in order to pursue higher performance, a higher slot fill rate is required, which makes it difficult for the stator coolant to circulate in the slot to cool the winding in the slot, especially in the multi-strand round wire parallel winding method. The wires in the slot are staggered with each other and the gaps are small, making it difficult for the coolant to circulate, affecting the heat dissipation effect.

[0004] Therefore, how to improve the heat dissipation effect is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a stator structure to improve the heat dissipation effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A stator structure, comprising:

[0008] A stator core, wherein the stator core has a first surface and a second surface opposite to each other, and the first surface of the stator core has stator teeth;

[0009] A winding, the winding being wound on the stator teeth of the stator core;

[0010] A housing, wherein the housing has an annular groove for accommodating the stator core, and the second surface of the stator core faces the bottom surface of the annular groove;

[0011] A spacer plate assembly is used to divide the space in the annular groove to form a first cooling channel located on the first surface of the stator core and a second cooling channel located on the second surface of the stator core.

[0012] Optionally, in the above stator structure, the spacer plate assembly includes:

[0013] A first spacer plate, the first spacer plate is arranged between the side wall of the stator core and the side wall of the annular groove, and the first spacer plate has a relief portion for escaping the winding;

[0014] A second spacer plate is disposed between the second surface of the stator core and the bottom surface of the annular groove.

[0015] Optionally, in the above stator structure, the number of the first spacer plates is multiple, including an inner ring spacer plate and an outer ring spacer plate;

[0016] One end of the inner ring spacer plate contacts the inner ring groove side wall of the annular groove, and the other end of the inner ring spacer plate contacts the inner ring side wall of the stator core;

[0017] One end of the outer ring spacer plate contacts the outer ring side wall of the stator core, and the other end of the outer ring spacer plate contacts the outer ring groove side wall of the annular groove;

[0018] The first cooling channel includes an outer ring channel section surrounded by the outer ring spacer, the outer ring groove side wall of the annular groove and the outer end surface of the stator tooth, and an inner ring channel section surrounded by the inner ring spacer, the inner ring groove side wall of the annular groove and the inner end surface of the stator tooth; the outer ring channel section and the inner ring channel section are both connected to the second cooling channel.

[0019] Optionally, in the above stator structure, the number of the second partition plates is multiple, including a fully enclosed partition plate, an inner enclosed partition plate and an outer enclosed partition plate;

[0020] One end of the fully enclosed spacer plate contacts the inner groove side wall of the annular groove, and the other end of the fully enclosed spacer plate contacts the outer groove side wall of the annular groove;

[0021] One end of the inner closed spacer is in contact with the inner groove side wall of the annular groove, and the other end of the inner closed spacer is in contact with the outer groove side wall of the annular groove to form an inner gap for fluid flow;

[0022] An outer gap for fluid flow is formed between one end of the outer closed spacer and the inner groove side wall of the annular groove, and the other end of the outer closed spacer contacts the outer groove side wall of the annular groove;

[0023] The inner gap and the outer gap belong to different positions of the second cooling channel.

[0024] Optionally, in the above stator structure, the second cooling channel includes:

[0025] An outer to inner flow channel section from the outer groove side wall of the annular groove to the inner groove side wall of the annular groove;

[0026] An inner to outer flow channel section from the inner groove side wall of the annular groove to the outer groove side wall of the annular groove;

[0027] The inlet of the inner circle flow channel section is connected to the outlet of the outer-to-inner flow channel section, the outlet of the inner circle flow channel section is connected to the inlet of the inner-to-outer flow channel section, the outlet of the inner-to-outer flow channel section is connected to the inlet of the outer circle flow channel section, and the inlet of the outer-to-inner flow channel section is connected to the outlet of the outer circle flow channel section.

[0028] Optionally, in the above stator structure, the end of the second partition plate has a positioning component, and one end of the first partition plate close to the bottom surface of the slot is positioned and connected to the positioning component.

[0029] Optionally, in the above stator structure, the positioning component includes a first protruding component protruding away from the bottom surface of the slot, and the first protruding component is located between the side wall of the stator core and the side wall of the annular slot;

[0030] The first protruding component has a first plug-in portion, and the first partition plate has a second plug-in portion at one end close to the bottom surface of the groove, and the first plug-in portion is plug-fitted with the second plug-in portion.

[0031] Optionally, in the above stator structure, the first partition plate is a U-shaped plate, wherein the hollow structure is a evacuation portion for evacuating the winding, and the open end of the U-shaped plate is the second plug-in portion;

[0032] The first plug-in portion is a plug-in slot.

[0033] Optionally, in the above stator structure, the housing has a liquid inlet and a liquid outlet connected to the annular groove;

[0034] The liquid inlet and the liquid outlet are arranged corresponding to the outer end surfaces of the stator teeth.

[0035] The utility model also provides a motor, comprising a stator structure and a rotor structure, wherein the stator structure is the stator structure as described in any one of the above items.

[0036] It can be seen from the above technical solution that the stator structure provided by the utility model can cool both sides of the stator core by forming a first cooling channel on the first surface of the stator core and a second cooling channel on the second surface of the stator core, thereby improving the heat dissipation effect of the stator core, and then indirectly improving the heat dissipation effect of the winding, thereby improving the heat dissipation effect of the overall stator structure.

[0037] The utility model also provides a motor having the above stator structure. Since the above stator structure has the above technical effects, the motor having the above stator structure should also have the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 An exploded structural diagram of a stator structure provided in an embodiment of the utility model;

[0040] Figure 2 A schematic cross-sectional view of a stator structure provided in an embodiment of the utility model;

[0041] Figure 3 A schematic diagram of the structure of the first cooling channel provided in an embodiment of the utility model;

[0042] Figure 4 A schematic diagram of the structure of the second cooling channel provided in an embodiment of the utility model;

[0043] Figure 5 A first structural schematic diagram of a stator core and a second partition plate provided in an embodiment of the utility model;

[0044] Figure 6 A second structural schematic diagram of the stator core and the second partition plate provided in an embodiment of the utility model;

[0045] Figure 7 A structural schematic diagram of the magnetic circuit direction of the stator core provided in an embodiment of the utility model;

[0046] Figure 8 A first structural schematic diagram of a fully enclosed partition provided in an embodiment of the utility model;

[0047] Fig. 9 A second structural schematic diagram of a fully enclosed partition provided in an embodiment of the utility model;

[0048] Fig.10 A schematic diagram of the structure of an inner closed partition provided in an embodiment of the utility model;

[0049] Fig.11 A schematic diagram of the structure of an externally enclosed partition provided in an embodiment of the utility model;

[0050] Fig.12 A schematic diagram of the three-dimensional structure of a first partition board provided in an embodiment of the utility model;

[0051] Fig.13 This is a schematic diagram of the front structural view of the first partition plate provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0052] The utility model discloses a stator structure to improve the heat dissipation effect. The utility model also discloses a motor.

[0053] For the purpose of reference and clarity, the descriptions, abbreviations or acronyms of technical terms used throughout the text are summarized as follows:

[0054] Magnetic flux density: Magnetic flux density is also called magnetic steel strength, which reflects the density of magnetic lines of force. The stronger the magnetic field, the greater the magnetic flux density and the denser the magnetic lines of force.

[0055] Slot fill rate: The ratio of the space in the stator slot occupied by the coil. The higher the slot fill rate, the more wires there are in the coil, the stronger the magnetic field generated, and the greater the motor power.

[0056] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] like Figure 1-Figure 4 As shown, the embodiment of the utility model provides a stator structure, including a stator core 3, a winding 4, a housing 1 and a spacer assembly. The stator core 3 has a first surface and a second surface opposite to each other, and the first surface of the stator core 3 has stator teeth 31; the winding 4 is wound on the stator teeth 31 of the stator core 3; the housing 1 has an annular groove for accommodating the stator core 3, and the second surface of the stator core 3 faces the bottom surface of the annular groove; the spacer assembly is used to divide the space in the annular groove to form a first cooling channel located on the first surface of the stator core 3 and a second cooling channel located on the second surface.

[0058] The stator structure provided by the embodiment of the utility model can cool both sides of the stator core 3 by forming a first cooling channel on the first surface of the stator core 3 and a second cooling channel on the second surface of the stator core 3, thereby improving the heat dissipation effect of the stator core 3, and then indirectly improving the heat dissipation effect of the winding 4, thereby improving the heat dissipation effect of the overall stator structure.

[0059] Among them, the coolant in the first cooling channel can flow through the groove formed between two adjacent stator teeth 31. Although it will flow through the winding and affect the circulation of the coolant, the second cooling channel will not be blocked by the winding, thereby increasing the total flow rate of the coolant flowing through the stator core 3, thereby improving the cooling effect.

[0060] It is also possible to prevent the coolant in the first cooling channel from flowing through the slot formed between two adjacent stator teeth 31 , which requires the first cooling channel to be connected to the second cooling channel to facilitate the flow of the coolant.

[0061] The coolant flowing through the first cooling channel and the second cooling channel may be cooling oil or other types of fluid.

[0062] In a specific embodiment, the spacer assembly includes a first spacer 5 and a second spacer 2, the first spacer 5 is arranged between the side wall of the stator core 3 and the side wall of the annular groove, and the first spacer 5 has a relief portion for escaping the winding 4; the second spacer 2 is arranged between the second surface of the stator core 3 and the bottom surface of the annular groove;

[0063] Among them, the second partition plate 2, the first partition plate 5, the first surface of the stator core 3 and / or the slot side wall form a first cooling channel or a part of the first cooling channel; the second partition plate 2, the first partition plate 5, the second surface of the stator core 3 and the slot side wall and / or the slot bottom surface form a second cooling channel or a part of the second cooling channel.

[0064] Specifically, there are multiple first spacers 5, including an inner ring spacer 52 and an outer ring spacer 51; one end of the inner ring spacer 52 contacts the inner ring groove side wall of the annular groove, and the other end of the inner ring spacer 52 contacts the inner ring side wall of the stator core 3; one end of the outer ring spacer 51 contacts the outer ring side wall of the stator core 3, and the other end of the outer ring spacer 51 contacts the outer ring groove side wall of the annular groove;

[0065] The first cooling channel includes an outer ring channel section and an inner ring channel section. The outer ring channel section is surrounded by an outer ring spacer 51, the outer ring groove side wall of the annular groove and the outer end face of the stator tooth 31, and the inner ring channel section is surrounded by an inner ring spacer 52, the inner ring groove side wall of the annular groove and the inner end face of the stator tooth 31; and both the outer ring channel section and the inner ring channel section are connected to the second cooling channel. Through the connection of the second cooling channel, the coolant can flow between the outer ring channel section and the inner ring channel section. That is, the coolant can flow from the outer ring channel section through the second cooling channel into the inner ring channel section, and can also flow from the inner ring channel section through the second cooling channel into the outer ring channel section. Through the above arrangement, the coolant does not need to flow through the slot formed between two adjacent stator teeth 31, and will not be hindered by the coil of the winding 4.

[0066] Furthermore, there are multiple second partition plates 2. It can be understood that the flow channel section formed between two adjacent second partition plates 2 belongs to the second cooling flow channel.

[0067] The plurality of second partition plates 2 include a fully enclosed partition plate 21 , an inner enclosed partition plate 22 and an outer enclosed partition plate 23 .

[0068] One end of the fully enclosed spacer plate 21 contacts the inner groove side wall of the annular groove, and the other end of the fully enclosed spacer plate 21 contacts the outer groove side wall of the annular groove;

[0069] One end of the inner closed spacer plate 22 contacts the inner groove side wall of the annular groove, and the other end of the inner closed spacer plate 22 and the outer groove side wall of the annular groove form an inner gap for fluid flow;

[0070] An outer gap for fluid flow is formed between one end of the outer closed spacer plate 23 and the inner groove side wall of the annular groove, and the other end of the outer closed spacer plate 23 contacts the outer groove side wall of the annular groove;

[0071] The inner gap and the outer gap belong to different positions of the second cooling channel. Through the above arrangement, the second cooling channel can be used as an independent channel, and can also cooperate with the first cooling channel to form a complete channel.

[0072] In this embodiment, the second cooling channel includes: an outer-to-inner channel section from the outer ring groove side wall of the annular groove to the inner ring groove side wall of the annular groove; and an inner-to-outer channel section from the inner ring groove side wall of the annular groove to the outer ring groove side wall of the annular groove.

[0073] Specifically, the inlet of the inner circle flow channel section is connected to the outlet of the outer to inner flow channel section, the outlet of the inner circle flow channel section is connected to the inlet of the inner to outer flow channel section, the outlet of the inner to outer flow channel section is connected to the inlet of the outer circle flow channel section, and the inlet of the outer to inner flow channel section is connected to the outlet of the outer circle flow channel section.

[0074] Through the above arrangement, the first cooling channel and the second cooling channel form an S-shaped channel, which is arranged from the first surface of the stator core 3 to the second surface of the stator core 3, and can cool the stator core 3 by the first surface of the stator core 3 and the second surface of the stator core 3, and the coolant bypasses the inner line of the slot of the winding 4 wound between two adjacent stator teeth 31, thereby avoiding the situation where the coolant is difficult to flow in the gap between two adjacent stator teeth 31, further improving the heat dissipation effect. In addition, the S-shaped channel also extends the flow path of the coolant to increase the heat exchange area of ​​the coolant in contact with the stator structure, further improving the cooling effect.

[0075] like Figure 4As shown, in a specific embodiment, the fully enclosed spacer 21, the inner enclosed spacer 22 and the outer enclosed spacer 23 are arranged along the annular groove, and are respectively the fully enclosed spacer 21, the inner enclosed spacer 22, the outer enclosed spacer 23, the inner enclosed spacer 22, the outer enclosed spacer 23 and the inner enclosed spacer 22. Among them, the two sides of the fully enclosed spacer 21 are the inlet and the outlet respectively. Through the above arrangement, the space between the bottom surface of the annular groove and the second surface of the stator core 3 can be separated by a plurality of second spacers 2 to form an S-shaped flow channel structure.

[0076] Of course, the first cooling channel and the second cooling channel may also be provided separately, that is, the coolant entering the first cooling channel and the coolant entering the second cooling channel are relatively independent, forming separate channels.

[0077] like Figure 5-Figure 11 As shown, the end of the second partition plate 2 has a positioning component, and the end of the first partition plate 5 close to the bottom surface of the slot is positioned and connected to the positioning component; the positioning component includes a first protruding component 201 protruding away from the bottom surface of the slot, and the first protruding component 201 is located between the side wall of the stator core 3 and the side wall of the annular slot; the first protruding component 201 has a first plug-in portion, and the end of the first partition plate 5 close to the bottom surface of the slot has a second plug-in portion, and the first plug-in portion is plug-fitted with the second plug-in portion.

[0078] In this embodiment, the protrusion height of the first protrusion part 201 is greater than the height of the stator yoke 32 of the stator core 3 , which can prevent the coolant from flowing through the gap between the bottom of the winding and the second partition plate 2 .

[0079] like Figure 5 As shown, the second partition plate 2 can be welded to the second surface of the stator core 3. In addition, threaded holes are provided on the surface of the second partition plate 2 facing away from the stator core 3, so that the second partition plate 2 can be connected to the housing 1 by screws.

[0080] The second spacer plates 2 can provide a gap between the stator core 3 and the housing 1 , and the interval between two adjacent second spacer plates 2 can cooperate to form a flow channel section belonging to the second cooling flow channel.

[0081] In this embodiment, both ends of the fully enclosed partition plate 21 have a first protruding part 201; one end of the inner enclosed partition plate 22 and the outer enclosed partition plate 23 has a first protruding part 201, and the other end of the inner enclosed partition plate 22 and the outer enclosed partition plate 23 has a second protruding part 203. That is, the positioning part includes the first protruding part 201 and the second protruding part 203. Among them, the second protruding part 203 protrudes away from the bottom surface of the groove, and the second protruding part 203 is located between the side wall of the stator core 3 and the side wall of the annular groove. The height of the second protruding part 203 only needs to meet the depth of the threaded hole.

[0082] like Figure 6 and Figure 7 As shown, the stator core 3 includes a stator yoke 32 and a stator tooth 31. In the direction of the magnetic circuit in the stator core 3, most of the magnetic circuit is separated to both sides along the center of the stator yoke 32 corresponding to the center line of the stator tooth 31. Therefore, a low magnetic density area 34 is generated at the separation of the magnetic circuit, where the magnetic field is small. Therefore, the center line of the second partition plate 2 is aligned with the center line of the stator tooth 31, so that the eddy current loss caused by the conduction increase due to the gap generated at the connection between the second partition plate 2 and the stator core 3 (such as the welding gap generated by welding the second partition plate 2 and the second surface of the stator core 3) is low.

[0083] like Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, both ends of the fully enclosed partition plate 21 have first protruding parts 201, which are fixed to the inner side and outer side of the stator core 3, so that the inner side and outer side of the stator core 3 are fixed. In addition, the first protruding parts 201 can block the coolant, thereby forming an S-shaped flow channel. Among them, the stator core 3 is an annular structure, the inner side of which is the inner ring surface of the annular structure, and the outer side is the outer ring surface of the annular structure. The protruding height of the first protruding part 201 of the fully enclosed partition plate 21 is greater than the height of the stator yoke 32 of the stator core 3, which can prevent the coolant from flowing through the gap between the bottom of the winding and the second partition plate 2. The two first protruding parts 201 are plugged into the inner ring partition plate 52 and the outer ring partition plate 51 respectively. In this embodiment, the outer ring partition plate 51 matched with the fully enclosed partition plate 21 is used to separate the inlet and outlet, and the outer ring partition plate 51 abuts between the outer ring groove side wall of the annular groove and the outer end surface of the stator tooth 31. The inner ring spacer plate 52 cooperates with the fully enclosed spacer plate 21 to allow the coolant to flow from the outside of the stator core 3 and be blocked on the inside of the stator core 3, wherein the inner ring spacer plate 52 abuts between the inner ring groove side wall of the annular groove and the inner end face of the stator tooth 31.

[0084] In addition, the stator core 3 is generally wound with metal sheets (such as silicon steel sheets). In the prior art, the processing methods of the stator core are winding, shaping, welding, punching, and grinding. Welding, punching, and grinding of the stator core will further increase the stator core loss. In the embodiment of the utility model, since both ends of the fully enclosed partition plate 21 have a first protruding component 201, the body of the fully enclosed partition plate 21 is fixed to the second surface of the stator core 3 by welding and the like, and the two first protruding components 201 can fix the wound stator core 3, eliminating the processes of punching and grinding, thereby improving production efficiency and reducing stator iron loss.

[0085] Of course, the inner closed spacer 22 and the outer closed spacer 23 may also be matched so that the first protruding part 201 of the inner closed spacer 22 and the first protruding part 201 of the outer closed spacer 23 fix the wound stator core 3 .

[0086] That is, the second spacer plate 2 achieves a fixing function for the wound stator core 3 .

[0087] like Figure 3 , Figure 4 and Fig.10 As shown, one end of the inner closed spacer 22 has a first protruding part 201, and the other end of the inner closed spacer 22 has a second protruding part 203. The first protruding part 201 is plugged with the outer ring spacer 51, and the outer ring spacer 51 abuts between the outer ring groove side wall of the annular groove and the outer end surface of the stator tooth 31. The outer ring spacer 51 matched with the inner closed spacer 22 is used to allow the coolant to flow from the inner side of the stator core 3 and be blocked on the outer side of the stator core 3. The second protruding part 203 is located between the inner side wall of the stator core 3 and the inner side groove side wall of the annular groove, and does not abut against the housing 1, that is, it does not contact the inner side groove side wall of the annular groove, and will not hinder the flow of the coolant. The flow area of ​​the inner flow channel section is increased, and the internal liquid flow rate is improved.

[0088] like Figure 3 , Figure 4 and Fig.11 As shown, one end of the outer closed spacer 23 has a first protruding part 201, and the other end of the outer closed spacer 23 has a second protruding part 203. The first protruding part 201 is plugged with the inner ring spacer 52, and the inner ring spacer 52 abuts between the inner ring groove side wall of the annular groove and the inner end surface of the stator tooth 31. The inner ring spacer 52 matched with the outer closed spacer 23 is used to allow the coolant to flow from the outside of the stator core 3 and be blocked on the inside of the stator core 3. The second protruding part 203 is located between the outer side wall of the stator core 3 and the outer side wall of the annular groove, and does not abut against the housing 1, that is, it does not contact the outer side wall of the annular groove, and will not hinder the flow of the coolant. The flow area of ​​the outer flow channel section is increased, and the flow rate of the external liquid is improved.

[0089] like Fig.12 As shown, the first partition plate 5 is a U-shaped plate (C-shaped structure), wherein the hollow structure is a evacuation portion for evacuating the winding 4, and the open end 501 of the U-shaped plate is a second plug-in portion; the first plug-in portion is a plug-in slot.

[0090] like Fig.13As shown, the first spacer 5 has two open ends 501, and a gap is formed between the two open ends 501 to avoid the winding 4. The width of one of the open ends 501 is L1, and the width of the other open end 501 is L2. Among them, L1 and L2 are the distance between the winding 4 and the housing 1 and the distance between the winding 4 and the stator core 3 respectively. The first spacer 5 has a connecting portion connecting the two open ends 501, and the height L3 of the connecting portion is the distance between the winding 4 and the top surface of the stator tooth 31 of the stator core 3.

[0091] In this embodiment, the second partition plate 2 is fixedly connected to the housing 1 through a connecting member (screw). Specifically, the first protruding member 201 has a threaded hole on one side facing the housing 1, and the housing 1 has a through hole corresponding to the threaded hole. The screw passes through the through hole and is connected to the threaded hole, thereby realizing the relative connection between the second partition plate 2 and the housing 1.

[0092] Specifically, the housing 1 has a liquid inlet 11 and a liquid outlet 12 connected to the annular groove; the liquid inlet 11 and the liquid outlet 12 are arranged corresponding to the outer end surface of the stator tooth 31. Through the above arrangement, the liquid flows toward the outer end surface of the stator tooth 31 after entering the annular groove from the liquid inlet 11, and the fluid is blocked by the outer end surface of the stator tooth 31 so that the fluid can be evenly distributed in the first cooling channel (inner ring channel section). The outer end surface and the inner end surface of the stator tooth 31 are the outer peripheral surfaces arranged along the circumference of the stator tooth 31.

[0093] Furthermore, the stator structure further comprises a sealing plate 6, which closes the notch of the annular groove of the housing 1 to seal the stator core 3 in the annular groove. Preferably, the top surface of the stator teeth 31 and the top surface of the first partition plate 5 can contact the sealing plate 6.

[0094] An embodiment of the utility model further provides a motor, comprising a stator structure and a rotor structure, wherein the stator structure is any one of the stator structures described above.

[0095] Since the above-mentioned stator structure has the above-mentioned technical effects, the motor having the above-mentioned stator structure should also have the same technical effects, which will not be described in detail here.

[0096] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0097] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stator structure, characterized in that: include: A stator core (3), the stator core (3) having a first surface and a second surface opposite to each other, the first surface of the stator core (3) having stator teeth (31); A winding (4), the winding (4) being wound on the stator teeth (31) of the stator core (3); A housing (1), the housing (1) having an annular groove for accommodating the stator core (3), the second surface of the stator core (3) facing the bottom surface of the annular groove; A spacer plate assembly is used to divide the space in the annular groove to form a first cooling channel located on a first surface of the stator core (3) and a second cooling channel located on a second surface of the stator core (3).

2. The stator structure according to claim 1, characterized in that: The spacer plate assembly comprises: a first spacer (5), the first spacer (5) being arranged between a side wall of the stator core (3) and a side wall of the annular groove, the first spacer (5) having a relief portion for relief of the winding (4); A second spacer plate (2), the second spacer plate (2) being arranged between a second surface of the stator core (3) and a groove bottom surface of the annular groove.

3. The stator structure according to claim 2, characterized in that: The first spacer plates (5) are multiple in number, and include an inner ring spacer plate (52) and an outer ring spacer plate (51); One end of the inner ring spacer plate (52) contacts the inner ring groove side wall of the annular groove, and the other end of the inner ring spacer plate (52) contacts the inner ring side wall of the stator core (3); One end of the outer ring spacer plate (51) contacts the outer ring side wall of the stator core (3), and the other end of the outer ring spacer plate (51) contacts the outer ring groove side wall of the annular groove; The first cooling channel comprises an outer ring channel section surrounded by the outer ring spacer plate (51), the outer ring groove side wall of the annular groove and the outer end surface of the stator tooth (31), and an inner ring channel section surrounded by the inner ring spacer plate (52), the inner ring groove side wall of the annular groove and the inner end surface of the stator tooth (31); the outer ring channel section and the inner ring channel section are both connected to the second cooling channel.

4. The stator structure according to claim 3, characterized in that: The second partition plates (2) are multiple in number, including a fully enclosed partition plate (21), an inner enclosed partition plate (22) and an outer enclosed partition plate (23); One end of the fully enclosed spacer plate (21) contacts the inner groove side wall of the annular groove, and the other end of the fully enclosed spacer plate (21) contacts the outer groove side wall of the annular groove; One end of the inner closed spacer plate (22) contacts the inner groove side wall of the annular groove, and an inner gap for fluid flow is formed between the other end of the inner closed spacer plate (22) and the outer groove side wall of the annular groove; An outer gap for fluid flow is formed between one end of the outer closed spacer plate (23) and the inner groove side wall of the annular groove, and the other end of the outer closed spacer plate (23) contacts the outer groove side wall of the annular groove; The inner gap and the outer gap belong to different positions of the second cooling channel.

5. The stator structure according to claim 3 or 4, characterized in that: The second cooling channel comprises: An outer to inner flow channel section from the outer groove side wall of the annular groove to the inner groove side wall of the annular groove; An inner to outer flow channel section from the inner groove side wall of the annular groove to the outer groove side wall of the annular groove; The inlet of the inner circle flow channel section is connected to the outlet of the outer-to-inner flow channel section, the outlet of the inner circle flow channel section is connected to the inlet of the inner-to-outer flow channel section, the outlet of the inner-to-outer flow channel section is connected to the inlet of the outer circle flow channel section, and the inlet of the outer-to-inner flow channel section is connected to the outlet of the outer circle flow channel section.

6. The stator structure according to claim 2, characterized in that: The end of the second partition plate (2) has a positioning component, and one end of the first partition plate (5) close to the bottom surface of the groove is positioned and connected to the positioning component.

7. The stator structure according to claim 6, characterized in that: The positioning component comprises a first protruding component (201) protruding away from the bottom surface of the slot, and the protruding height of the first protruding component (201) is greater than the height of the stator yoke (32) of the stator core (3); The first protruding component (201) is located between the side wall of the stator core (3) and the side wall of the annular groove; The first protruding component (201) has a first plug-in portion, and one end of the first partition plate (5) close to the bottom surface of the groove has a second plug-in portion, and the first plug-in portion is plug-fitted with the second plug-in portion.

8. The stator structure according to claim 7, characterized in that: The first partition plate (5) is a U-shaped plate, wherein the hollow structure is a relief portion for escaping the winding (4), and the open end (501) of the U-shaped plate is the second plug-in portion; The first plug-in portion is a plug-in slot.

9. The stator structure according to claim 1, characterized in that: The housing (1) has a liquid inlet (11) and a liquid outlet (12) which are in communication with the annular groove; The liquid inlet (11) and the liquid outlet (12) are arranged corresponding to the outer end surface of the stator tooth (31).

10. A motor, comprising a stator structure and a rotor structure, characterized in that: The stator structure is the stator structure according to any one of claims 1 to 9.

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