Stator of axial flux motor and axial flux motor

Abstract

The utility model relates to the technical field of motors, and discloses a stator of an axial magnetic flux motor and the axial magnetic flux motor. The stator comprises a casing assembly which is provided with a cooling liquid inlet and a cooling liquid outlet; an inner ring channel and an outer ring channel are defined by the stator assembly and the machine shell assembly, and the stator assembly comprises a coil; the inner partition plates are arranged in the inner ring channel at intervals and divide the inner ring channel into a plurality of inner channel sections; the outer partition plates are arranged in the outer ring channel at intervals and divide the outer ring channel into a plurality of outer channel sections, the inner partition plates and the outer partition plates enable a plurality of flowing areas which are sequentially communicated to be formed in the machine shell assembly, the cooling liquid inlet and the cooling liquid outlet are communicated with the head flowing area and the tail flowing area respectively, and the coil comprises a plurality of effective conductor parts which extend in the radial direction. A communication hole extending in the radial direction is formed in the effective conductor part, and the inner channel section and the outer channel section in the flow area where the communication hole is located are communicated through the communication hole. According to the stator, the cooling effect is good after cooling liquid is introduced, and the internal temperature distribution is uniform.

Description

Technical Field

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

[0002] The axial flux motor has the advantages of compact structure, small size, high torque density, etc., and is widely used in electric vehicles, flywheel energy storage, wind power generation, etc. The axial flux motor includes a stator, which includes a housing assembly and a stator core and a stator winding arranged in the housing assembly.

[0003] During the operation of the motor, the stator winding generates heat. To ensure the stable operation of the motor, one existing method is to pass coolant into the housing assembly to cool the stator winding and the stator core. However, in the stator structure of the prior art, after the coolant enters the housing assembly, it is difficult to ensure its flow path and to ensure that it is in full contact with the stator coil for heat exchange, resulting in poor heat dissipation effect of the stator.

[0004] Therefore, there is an urgent need for a stator of an axial flux motor and an axial flux motor to solve the above technical problems. Utility Model Content

[0005] One purpose of the utility model is to provide a stator of an axial flux motor, wherein the internal cooling channel is reasonably arranged, the cooling effect is good after the coolant is passed through, and the internal temperature distribution is uniform.

[0006] Another object of the utility model is to provide an axial flux motor, which can avoid failures caused by excessively high stator temperature or uneven temperature distribution by providing the above-mentioned stator, thereby increasing the service life.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The stator of an axial flux motor comprises:

[0009] The housing assembly is surrounded to form a receiving cavity and is provided with a coolant inlet and a coolant outlet;

[0010] A stator assembly is arranged in the accommodating cavity and is surrounded by the housing assembly to form an inner ring channel and an outer ring channel, wherein the stator assembly comprises a stator core and a coil wound on the stator core;

[0011] A plurality of inner baffles are arranged in the inner circle channel at intervals and divide the inner circle channel into a plurality of inner channel sections;

[0012] A plurality of outer baffles are arranged at intervals in the outer ring channel and divide the outer ring channel into a plurality of outer channel sections. Each of the inner baffles and the outer baffles forms a plurality of flow areas connected in sequence in the housing assembly, each of the flow areas includes at least a portion of the inner channel section and at least a portion of the outer channel section, and the coolant inlet and the coolant outlet are respectively connected to the first and last two of the flow areas;

[0013] The coil comprises a plurality of effective conductor parts extending in radial direction, wherein a connecting hole extending in radial direction is provided in the effective conductor part, and the connecting hole connects the inner channel section and the outer channel section in the flow area where the coil is located.

[0014] As an optional scheme, the end faces of the stator core at both ends along the axial direction are respectively abutted against the upper side wall and the lower side wall of the casing assembly, and a plurality of connecting grooves are provided on the upper side wall and / or the lower side wall, and the two ends of the connecting grooves are respectively connected to the inner channel section and the outer channel section in the flow area where they are located.

[0015] As an optional solution, the stator core is connected to the housing assembly via a plurality of fasteners, and the plurality of fasteners are distributed on a plurality of concentric circles with different diameters.

[0016] As an optional solution, the housing assembly is provided with a plurality of mounting holes for connecting with the fasteners, and the mounting holes are staggered with the connecting grooves.

[0017] As an optional solution, the end faces of the stator core at both ends along the axial direction respectively abut against the upper side wall and the lower side wall in the casing assembly, and an annular groove is provided on the upper side wall and / or the lower side wall, and the stator core is snap-fitted with the annular groove.

[0018] As an optional solution, the housing assembly includes a housing and a cover plate that are mutually buckled along the axial direction, wherein:

[0019] The shell is provided with a plurality of first inner grooves, the cover plate is provided with a plurality of second inner grooves, the plurality of second inner grooves are provided in one-to-one correspondence with the plurality of first inner grooves, and the inner partition is respectively engaged with the correspondingly provided first inner grooves and the second inner grooves; and / or

[0020] The shell is provided with a plurality of first outer grooves, the cover plate is provided with a plurality of second outer grooves, the plurality of second outer grooves are arranged in one-to-one correspondence with the plurality of first outer grooves, and the outer partition is respectively engaged with the correspondingly arranged first outer grooves and second outer grooves.

[0021] As an optional solution, the first inner groove is axially connected to the second inner groove; and / or

[0022] The first outer groove is connected to the second outer groove along the axial direction.

[0023] As an optional solution, the coil includes an inner ring end and an outer ring end, the inner ring end is connected to the inner ends of the plurality of effective conductor parts in the radial direction, and the outer ring end is connected to the outer rings of the plurality of effective conductor parts in the radial direction; wherein:

[0024] The inner partition is sleeved on the end of the inner ring; and / or

[0025] The outer partition plate is sleeved on the end of the outer ring.

[0026] As an optional solution, the inner partition is made of elastic material and is provided with an inner ring hole and an inner installation seam, and the inner ring end is installed into the inner ring hole from the inner installation seam; and / or

[0027] The outer partition is made of elastic material, and is provided with an outer ring hole and an outer installation seam. The end of the outer ring is installed into the outer ring hole through the outer installation seam.

[0028] The axial flux motor comprises a rotor and the stator, wherein the stator and the rotor are arranged along the axial direction.

[0029] The beneficial effects of the utility model are:

[0030] The stator of the axial flux motor of the utility model, after the stator assembly is placed in the housing assembly, an inner ring channel located on the inner side of the stator assembly and an outer ring channel located on the outer side of the stator assembly are formed in the housing assembly, and after a number of inner partitions and outer partitions are installed, a plurality of flow areas connected in sequence are formed in the housing assembly, and the connecting holes arranged in the effective conductor part of the coil connect the inner channel section and the outer channel section in the corresponding flow area, so that a roughly S-shaped flow path is formed inside the housing assembly to ensure that the coolant can flow according to the planned flow path. When the coolant flows in the inner channel section and the outer channel section, it can fully exchange heat with the inner ring end and the outer ring end of the coil, and when the coolant flows in the connecting hole, it can fully exchange heat with the effective conductor part of the coil, that is, it is ensured that each position of the coil can be cooled evenly, which not only improves the cooling effect, but also ensures the uniformity of the temperature inside the stator.

[0031] The axial flux motor of the utility model can avoid failures caused by excessively high stator temperature or uneven temperature distribution by arranging the above-mentioned stator, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of an axial flux motor provided by a specific embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the exploded structure of the axial flux motor provided by the specific implementation mode of the utility model;

[0034] Figure 3 It is a structural schematic diagram of a stator provided in a specific embodiment of the utility model;

[0035] Figure 4 It is a structural schematic diagram of a stator without a cover plate provided by a specific embodiment of the utility model;

[0036] Figure 5 It is a structural schematic diagram of a stator assembly, an inner partition plate and an outer partition plate provided in a specific embodiment of the utility model;

[0037] Figure 6 It is a structural schematic diagram of a housing provided by a specific embodiment of the utility model;

[0038] Figure 7 It is a structural schematic diagram of a cover plate provided in a specific embodiment of the utility model;

[0039] Figure 8 It is a top view of a stator provided in a specific embodiment of the utility model;

[0040] Fig. 9 yes Figure 8 AA section view in;

[0041] Fig.10 It is a schematic diagram of the coolant flow path inside the stator provided by a specific embodiment of the utility model;

[0042] Fig.11 yes Figure 8 BB structure diagram in

[0043] Fig.12 It is a structural schematic diagram of an inner partition provided by a specific implementation method of the utility model.

[0044] In the figure:

[0045] 100, stator; 200, rotor; 300, output shaft; 400, connecting pipe;

[0046] 10. Casing components;

[0047] 11. housing; 111. lower side wall; 112. connecting groove; 113. mounting hole; 114. first inner groove; 115. first outer groove; 116. coolant inlet; 117. coolant outlet;

[0048] 12, cover plate; 121, upper side wall; 122, annular groove; 123, second inner groove; 124, second outer groove;

[0049] 20. stator assembly; 21. stator core; 22. coil; 221. effective conductor portion; 2211. connecting hole; 222. inner ring end; 223. outer ring end;

[0050] 30. Inner partition; 31. Holes in inner ring; 32. Inner installation seam;

[0051] 40. External partition;

[0052] 50. Fasteners;

[0053] 60. Inner circle channel; 61. Inner channel section; 70. Outer circle channel; 71. Outer channel section. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0055] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0058] This embodiment provides a stator of an axial flux motor and an axial flux motor. Figure 1 and Figure 2 As shown, the axial flux motor includes a stator 100, a rotor 200 and an output shaft 300, the rotor 200 is connected to the output shaft 300, the stator 100 is sleeved on the output shaft 300 and arranged axially with the rotor 200. In this embodiment, the axial flux motor includes two stators 100 and one rotor 200, the two stators 100 are symmetrically arranged, and the rotor 200 is arranged between the two stators 100. In other embodiments, the axial flux motor may also include only one stator and one rotor, which is not specifically limited here.

[0059] like Figure 3 and Figure 4 As shown, the stator 100 of the axial flux motor includes a casing assembly 10 and a stator assembly 20. The casing assembly 10 is arranged to form a receiving cavity, and the stator assembly 20 is arranged in the receiving cavity of the casing assembly 10. The casing assembly 10 is constructed as an annular structure, and the entire stator assembly 20 is also constructed as an annular structure. The stator assembly 20 is coaxially arranged with the casing assembly 10. In this embodiment, the casing assembly 10 includes an outer shell 11 and a cover plate 12. An opening is provided on one side of the outer shell 11. The cover plate 12 can be axially engaged with the outer shell 11 to form a receiving cavity. The above-mentioned casing assembly 10 structure facilitates the installation of the stator assembly 20. Optionally, the outer shell 11 and the cover plate 12 can be connected and fixed by fasteners such as bolts. In this embodiment, Figure 2 As shown, a certain space is formed between the shells 11 of the two stators 100, and the rotor 200 is arranged in the space, that is, the shell 11 is not only a part of the stator 100 shell, but also a part of the entire axial flux motor shell.

[0060] like Figure 4 and Figure 5As shown, the stator assembly 20 includes a stator core 21 and a coil 22, and the coil 22 is wound on the stator core 21. The coil 22 is formed with an inner ring end 222, an outer ring end 223 and a plurality of effective conductor parts 221. The plurality of effective conductor parts 221 are arranged at intervals along the circumferential direction, and each effective conductor part 221 extends in the radial direction. The inner ring end 222 is configured as a ring, and the inner ends of the plurality of effective conductor parts 221 are connected together in the radial direction. The outer ring end 223 is configured as a ring, and the outer ends of the plurality of effective conductor parts 221 are connected together in the radial direction.

[0061] like Figure 2 , Figure 6 and Fig. 9 As shown, the stator core 21 is connected to the housing assembly 10 through a plurality of fasteners 50. Specifically, the fasteners 50 are bolts, a plurality of threaded holes are provided on the stator core 21, and a plurality of mounting holes 113 are provided on the housing 11. After the stator assembly 20 is placed in the housing 11, each threaded hole is arranged opposite to a mounting hole 113, and the bolts are threadedly connected with the threaded holes on the stator core 21 after passing through the mounting holes 113, thereby achieving the fixation of the entire stator assembly 20. Preferably, the plurality of fasteners 50 are distributed on a plurality of concentric circles with different diameters. This arrangement can not only ensure the rigidity of the stator core 21, but also improve the reliability of the installation of the stator assembly 20. In this embodiment, the plurality of fasteners 50 are distributed on two concentric circles with different diameters, and three fasteners 50 are provided on each circle. In other embodiments, the number and arrangement of the fasteners 50 can be flexibly adjusted according to actual needs.

[0062] like Figure 6-Figure 9 As shown, the surface of the cover plate 12 facing the shell 11 is defined as the upper side wall 121 of the housing assembly 10, and the surface of the shell 11 facing the cover plate 12 is defined as the lower side wall 111. The end faces of the stator core 21 along the axial direction are respectively against the upper side wall 121 and the lower side wall 111. Preferably, an annular groove 122 is provided on the upper side wall 121 of the cover plate 12, and the stator core 21 is engaged with the annular groove 122. On the one hand, the provision of the annular groove 122 can limit the stator 100 and ensure that the stator 100 is firmly installed. On the other hand, it can prevent the coolant used to cool the stator 100 from flowing freely between the cover plate 12 and the stator core 21 (the specific flow path of the coolant is described below). In other embodiments, the annular groove 122 can also be provided on the lower side wall 111, or the annular groove 122 is provided on both the upper side wall 121 and the lower side wall 111, which is not specifically limited here.

[0063] During the operation of the motor, the coil will heat up, which will cause the temperature inside the stator to rise. In order to ensure the stable operation of the motor, the coil inside the stator needs to be cooled. The common cooling method is to pass coolant into the casing assembly. However, in the existing stator structure, after the coolant enters the casing assembly, it is difficult to ensure its flow path and to ensure that it is in full contact with the stator coil for heat exchange, resulting in poor heat dissipation effect of the stator.

[0064] like Figure 3 As shown, the housing assembly 10 is provided with a coolant inlet 116 and a coolant outlet 117, which are used to respectively introduce coolant into the housing assembly 10 and discharge the coolant after heat exchange in the housing assembly 10. Figure 2 As shown, for an axial flux motor with two stators 100 , the coolant outlet 117 of one stator 100 is communicated with the coolant inlet 116 of the other stator 100 through a communicating pipe 400 .

[0065] Preferably, if Figure 4 , Figure 8-Figure 11 As shown, after the stator assembly 20 is placed in the housing assembly 10, an inner ring channel 60 is formed between the inner side of the stator assembly 20 and the inner ring side wall of the housing assembly 10, and an outer ring channel 70 is formed between the outer side of the stator assembly 20 and the outer ring side wall of the housing assembly 10. The stator 100 of the axial flux motor further includes a plurality of inner partitions 30 and a plurality of outer partitions 40, wherein the plurality of inner partitions 30 are arranged at intervals in the inner ring channel 60, and the inner ring channel 60 is divided into a plurality of inner channel sections 61 which are not connected to each other, and the plurality of outer partitions 40 are arranged at intervals in the outer ring channel 70, and the outer ring channel 70 is divided into a plurality of outer channel sections 71 which are not connected to each other, and each inner partition 30 and each outer partition 40 form a plurality of sequentially connected flow areas in the housing assembly 10, and each flow area includes at least a portion of the inner channel section 61 and at least a portion of the outer channel section 71.

[0066] Specifically, the leading flow area is connected to the coolant inlet 116, the trailing flow area is connected to the coolant outlet 117, and for the middle flow area, two adjacent flow areas are connected by sharing an inner channel section 61 or an outer channel section 71, thereby ensuring that the multiple flow areas are connected in sequence. Figure 5 and Fig.11 As shown, the effective conductor part 221 of the coil 22 is provided with a radially extending connecting hole 2211, and the connecting hole 2211 connects the inner channel section 61 and the outer channel section 71 in the flow area where the coil 22 is located, that is, the connecting hole 2211 ensures the conduction of the internal flow channel of each flow area. It should be noted that Fig.10 The dashed arrows in refractory FIG. 1 represent the flow path of the coolant inside the housing assembly 10 .

[0067] The stator 100 of the axial flux motor of this embodiment forms a substantially S-shaped flow path ( Fig.10 ), so as to ensure that the coolant can flow along the planned flow path, and the coolant can fully exchange heat with the inner ring end 222 and the outer ring end 223 of the coil 22 when flowing in the inner channel section 61 and the outer channel section 71, and can fully exchange heat with the effective conductor part 221 of the coil 22 when flowing in the connecting hole 2211, that is, to ensure that each position of the coil 22 can be cooled uniformly, which not only improves the cooling effect, but also ensures the uniformity of the temperature inside the stator 100. The axial flux motor of this embodiment can avoid failures caused by excessively high temperature or uneven temperature distribution of the stator 100 by setting the above-mentioned stator 100, thereby improving the service life.

[0068] In this embodiment, Fig. 9 and Fig.10 As shown, the number of outer baffles 40 is one more than the number of inner baffles 30, and one inner baffle 30 and one outer baffle 40 are located on the same radius, and the two sides of the radius are the head and tail flow areas respectively, and the inner channel sections 61 and the outer channel sections 71 of the head and tail flow areas are not connected. The remaining inner baffles 30 and outer baffles 40 are alternately arranged along the circumferential direction, so as to form a plurality of intermediate flow areas.

[0069] Preferably, if Figure 6 and Fig.11 As shown, a plurality of connecting grooves 112 are provided on the lower side wall 111, and the two ends of the connecting grooves 112 are respectively connected to the inner channel section 61 and the outer channel section 71 in the flow area where they are located. By providing the connecting grooves 112, the radial flow area in the same flow area is increased, which not only increases the heat exchange area of ​​the stator assembly 20, but also reduces the pressure loss of the entire flow path, thereby reducing the circulation energy consumption of the coolant and reducing the use cost of the axial flux motor. In this embodiment, the connecting grooves 112 extend radially, and their length is greater than the radial length of the stator core 21 to ensure that their two ends are respectively connected to the corresponding inner channel section 61 and the outer channel section 71, and the radially extending connecting grooves 112 are easy to process. In other embodiments, the extension trajectory of the connecting grooves 112 can also be a curve or a broken line, which is not specifically limited here. In other embodiments, the connecting grooves 112 can also be provided on the cover plate 12, or the cover plate 12 and the housing 11 are both provided with connecting grooves 112, which is not specifically limited here.

[0070] Preferably, if Figure 6As shown, the mounting hole 113 on the housing 11 is staggered from the connecting groove 112 to ensure that the fastener 50 connected to the stator core 21 will not pass through the connecting groove 112, thereby preventing the fastener 50 from obstructing the circulation of the coolant.

[0071] Preferably, if Figure 6 , Figure 7 and Fig. 9 As shown, the shell 11 is provided with a plurality of first inner grooves 114, the cover plate 12 is provided with a plurality of second inner grooves 123, the plurality of second inner grooves 123 are arranged one-to-one with the plurality of first inner grooves 114, the inner partition 30 is respectively engaged with the corresponding first inner grooves 114 and the second inner grooves 123, thereby achieving the fixing of the inner partition 30. Similarly, the shell 11 is provided with a plurality of first outer grooves 115, the cover plate 12 is provided with a plurality of second outer grooves 124, the plurality of second outer grooves 124 are arranged one-to-one with the plurality of first outer grooves 115, the outer partition 40 is respectively engaged with the corresponding first outer grooves 115 and the second outer grooves 124, thereby achieving the fixing of the outer partition 40. The fixing method of the inner partition 30 and the outer partition 40 is simple, and the inner partition 30 and the outer partition 40 can also play a supporting role for the shell 11 and the cover plate 12, thereby ensuring the strength of the overall structure of the stator 100.

[0072] Preferably, the first inner groove 114 is connected to the second inner groove 123 along the axial direction. Thus, the inner partition 30 is matched with the housing assembly 10 at the upper side, the lower side and the inner side, which improves the tightness of the fit between the inner partition 30 and the housing assembly 10, greatly reduces or avoids the flow of coolant from the fit gap, ensures that the coolant flows strictly according to the planned path, and thus ensures the cooling effect. Similarly, the first outer groove 115 is connected to the second outer groove 124 along the axial direction, so that the outer partition 40 is matched with the housing assembly 10 at the upper side, the lower side and the outer side, which improves the tightness of the fit between the outer partition 40 and the housing assembly 10, greatly reduces or avoids the flow of coolant from the fit gap, ensures that the coolant flows strictly according to the planned path, and thus ensures the cooling effect. In this embodiment, the first inner groove 114 is formed on the lower side wall 111 and the inner ring side wall of the housing 11, and the second inner groove 123 is formed on the upper side wall 121 and the inner ring side wall of the cover plate 12. The first outer groove 115 is formed on the lower side wall 111 and the outer ring side wall of the housing 11 , and the second outer groove 124 is formed on the upper side wall 121 and the outer ring side wall of the cover plate 12 .

[0073] Preferably, if Fig. 9As shown, the inner partition 30 is tightly against the inner ring surface of the stator core 21, thereby preventing the coolant from flowing through the matching gap between the inner partition 30 and the stator core 21, and ensuring that the coolant flows strictly along the planned path. The outer partition 40 is tightly against the outer ring surface of the stator core 21, thereby preventing the coolant from flowing through the matching gap between the outer partition 40 and the stator core 21, and ensuring that the coolant flows strictly along the planned path.

[0074] Preferably, if Figure 5 , Fig. 9 and Fig.12 As shown, the inner baffle 30 is sleeved on the inner ring end 222. The outer baffle 40 is sleeved on the outer ring end 223. Such a configuration can ensure that the inner baffle 30 is in close contact with the inner ring end 222, and the outer baffle 40 is in close contact with the outer ring end 223, thereby ensuring that the coolant flows strictly along the planned path.

[0075] Preferably, if Fig.12 As shown, the inner partition 30 is made of elastic material, and is provided with an inner ring hole 31 and an inner installation seam 32, and the inner ring end 222 is installed into the inner ring hole 31 from the inner installation seam 32. The elastic material not only makes it easier for the inner partition 30 to be matched with the coil 22, but also helps to improve the sealing performance of the inner partition 30 and the housing assembly 10, the inner ring end 222 and the stator core 21, and further ensures that the coolant flows strictly according to the planned path.

[0076] Similarly, the outer partition 40 is made of elastic material, and an outer ring hole and an outer installation seam are provided on the outer partition 40, and the outer ring end 223 is installed in the outer ring hole from the outer installation seam. The elastic material not only makes it easier for the outer partition 40 to cooperate with the coil 22, but also helps to improve the sealing performance of the outer partition 40 and the housing assembly 10, the outer ring end 223 and the stator core 21, and further ensures that the coolant flows strictly according to the planned path.

[0077] It should be noted that the inner partition 30 and the outer partition 40 can be made of hard rubber or non-metallic parts with specific elastic deformation capabilities. Therefore, the inner partition 30 and the outer partition 40 can also effectively separate the coil 22 from the housing assembly 10 to ensure the reliability of the internal insulation of the motor.

[0078] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A stator for an axial flux motor, characterized in that: include: The housing assembly (10) is surrounded to form a receiving cavity and is provided with a coolant inlet (116) and a coolant outlet (117); A stator assembly (20) is arranged in the accommodating cavity and is surrounded by the housing assembly (10) to form an inner ring channel (60) and an outer ring channel (70), wherein the stator assembly (20) comprises a stator core (21) and a coil (22) wound around the stator core (21); A plurality of inner partitions (30) are arranged at intervals in the inner circle channel (60) and divide the inner circle channel (60) into a plurality of inner channel sections (61); A plurality of outer baffles (40) are arranged at intervals in the outer ring channel (70) and divide the outer ring channel (70) into a plurality of outer channel sections (71); each of the inner baffles (30) and each of the outer baffles (40) form a plurality of sequentially connected flow areas in the housing assembly (10); each of the flow areas includes at least a portion of the inner channel section (61) and at least a portion of the outer channel section (71); the coolant inlet (116) and the coolant outlet (117) are respectively connected to the first and last two of the flow areas; The coil (22) comprises a plurality of radially extending effective conductor portions (221), wherein a connecting hole (2211) extending in the radial direction is provided in the effective conductor portion (221), and wherein the connecting hole (2211) connects the inner channel section (61) and the outer channel section (71) in the flow region where the connecting hole (2211) is located.

2. The stator of the axial flux motor according to claim 1, characterized in that: The end surfaces of the stator core (21) at both ends along the axial direction respectively abut against the upper side wall (121) and the lower side wall (111) of the housing assembly (10); a plurality of connecting grooves (112) are provided on the upper side wall (121) and / or the lower side wall (111); and the two ends of the connecting grooves (112) are respectively connected to the inner channel section (61) and the outer channel section (71) in the flow area where they are located.

3. The stator of the axial flux motor according to claim 2, characterized in that: The stator core (21) is connected to the housing assembly (10) via a plurality of fasteners (50), and the plurality of fasteners (50) are distributed on a plurality of concentric circles with different diameters.

4. The stator of the axial flux motor according to claim 3, characterized in that: The housing assembly (10) is provided with a plurality of mounting holes (113) for connecting with the fastener (50), and the mounting holes (113) and the connecting grooves (112) are staggered.

5. The stator of the axial flux motor according to claim 1, characterized in that: The end surfaces of the stator core (21) at both ends along the axial direction respectively abut against the upper side wall (121) and the lower side wall (111) in the housing assembly (10); an annular groove (122) is provided on the upper side wall (121) and / or the lower side wall (111); and the stator core (21) is engaged with the annular groove (122).

6. The stator of an axial flux motor according to any one of claims 1 to 5, characterized in that: The housing assembly (10) comprises a housing (11) and a cover plate (12) which are mutually buckled in the axial direction, wherein: The outer shell (11) is provided with a plurality of first inner grooves (114), the cover plate (12) is provided with a plurality of second inner grooves (123), the plurality of second inner grooves (123) are arranged in one-to-one correspondence with the plurality of first inner grooves (114), and the inner partition plate (30) is respectively engaged with the corresponding first inner grooves (114) and the second inner grooves (123); and / or The shell (11) is provided with a plurality of first outer grooves (115), the cover plate (12) is provided with a plurality of second outer grooves (124), the plurality of second outer grooves (124) are arranged in one-to-one correspondence with the plurality of first outer grooves (115), and the outer partition plate (40) is respectively engaged with the correspondingly arranged first outer grooves (115) and second outer grooves (124).

7. The stator of the axial flux motor according to claim 6, characterized in that: The first inner groove (114) is axially connected to the second inner groove (123); and / or The first outer groove (115) is connected to the second outer groove (124) along the axial direction.

8. The stator of an axial flux motor according to any one of claims 1 to 5, characterized in that: The coil (22) comprises an inner ring end (222) and an outer ring end (223), wherein the inner ring end (222) is connected to the inner ends of the plurality of effective conductor parts (221) in the radial direction, and the outer ring end (223) is connected to the outer rings of the plurality of effective conductor parts (221) in the radial direction; wherein: The inner partition plate (30) is sleeved on the inner ring end (222); and / or The outer partition plate (40) is sleeved on the outer ring end (223).

9. The stator of the axial flux motor according to claim 8, characterized in that: The inner baffle (30) is made of elastic material and is provided with an inner ring hole (31) and an inner installation seam (32), and the inner ring end (222) is inserted into the inner ring hole (31) from the inner installation seam (32); and / or The outer partition plate (40) is made of elastic material. An outer ring hole and an outer installation seam are provided on the outer partition plate (40). The outer ring end (223) is installed into the outer ring hole through the outer installation seam.

10. Axial flux motor, characterized in that It comprises a rotor (200) and the stator according to any one of claims 1 to 9, wherein the stator and the rotor (200) are arranged along the axial direction.

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