Stator assembly, driving mechanism and vehicle

Abstract

The invention relates to a stator assembly, a driving mechanism and a vehicle, the stator assembly comprises an iron core and windings, the iron core comprises tooth parts arranged at intervals and yoke parts connected between the adjacent tooth parts, and the windings are arranged around the tooth parts. Wherein the yoke part is internally provided with a heat exchange runner used for carrying out heat exchange on the winding, so that the space of the winding between the tooth parts is not occupied, the current bearing capacity of the winding can be further improved, and the electromagnetic performance of the stator assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a stator assembly, a drive mechanism and a vehicle. Background Art

[0002] In an axial flux motor, the main function of the stator assembly is to generate a rotating magnetic field, while the main function of the rotor is to be cut by magnetic lines of force in the rotating magnetic field to generate current. In order to ensure that the stator assembly can operate within a preset temperature range, the windings around the teeth in the stator assembly need to be cooled.

[0003] In the prior art, the cooling channel is arranged by utilizing the space between the teeth, which occupies the space of the winding between the teeth, resulting in a lower current carrying capacity of the winding, thereby affecting the electromagnetic performance of the motor. Summary of the invention

[0004] The embodiments of the present application provide a stator assembly, which improves the current carrying capacity of the stator assembly to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a stator assembly is provided, comprising:

[0006] An iron core comprising teeth arranged at intervals and a yoke connected between adjacent teeth;

[0007] A winding is arranged around the tooth portion;

[0008] Wherein, a heat exchange channel is provided in the yoke for exchanging heat for the winding.

[0009] In some embodiments, the yoke has a through hole, and the through hole penetrates the yoke along the radial direction of the iron core;

[0010] The stator assembly further includes a pipe inserted into the through hole, and the heat exchange channel is arranged in the pipe.

[0011] In some embodiments, it also includes:

[0012] A connecting section connects the ends of two adjacent pipes close to the center of the iron core, and one connecting section and the two pipes connected to the connecting section constitute a pipe assembly.

[0013] In some embodiments, it also includes:

[0014] A shell is arranged around the iron core, and a shell cavity flow channel is arranged in the shell;

[0015] A liquid inlet pipe and a liquid outlet pipe are arranged outside the shell;

[0016] Wherein, the pipeline assembly includes an inlet end and an outlet end, the inlet end of one pipeline assembly is connected to the liquid inlet pipe through the shell cavity flow channel, and the outlet end of another pipeline assembly is connected to the liquid outlet pipe through the shell cavity flow channel.

[0017] In some embodiments, the number of the pipeline assemblies is N, where N is greater than 1, and the N pipeline assemblies are connected in series through the shell cavity flow channel.

[0018] In some embodiments, in every two adjacent pipe assemblies, the outlet end of one pipe assembly is disposed adjacent to the inlet end of another pipe assembly.

[0019] In some embodiments, the shell cavity flow channel includes a plurality of sub-shell cavity flow channels spaced around the iron core; the sub-shell cavity flow channels are connected between two adjacent pipeline components and respectively connect the inlet end of one pipeline component and the outlet end of another pipeline component.

[0020] In some embodiments, in two adjacent pipe assemblies, the inlet end of one pipe assembly is connected to the liquid inlet pipe through one sub-shell cavity flow channel, and the outlet end of the other pipe assembly is connected to the liquid outlet pipe through another sub-shell cavity flow channel.

[0021] In some embodiments, the number of the pipeline assemblies is N, and N is greater than 1, and every M adjacent pipeline assemblies are arranged in parallel through the shell cavity flow channel, wherein M is a factor of N, and M is greater than 1.

[0022] In some embodiments, the shell cavity flow channel includes a first flow channel branch and a second flow channel branch arranged at intervals, the inlet end of each adjacent M parallel pipe assemblies is connected to the first flow channel branch, and the outlet end of each adjacent M parallel pipe assemblies is connected to the second flow channel branch.

[0023] In some embodiments, the first flow channel branch is a first wavy flow channel arranged along the circumference of the iron core, the second flow channel branch is a second wavy flow channel arranged along the circumference of the iron core, and the first wavy flow channel and the second wavy flow channel are at least partially arranged in parallel.

[0024] In some embodiments, M is equal to N, the inlet ends of the N pipe assemblies are connected to the first flow channel branch, and the outlet ends of the N pipe assemblies are connected to the second flow channel branch.

[0025] In some embodiments, M is smaller than N, the parallel-connected pipeline components form a pipeline group, and adjacent pipeline groups are connected in series through the shell cavity flow channel.

[0026] In some embodiments, the pipe has a first end face close to the center of the core, and the connecting section has a second end face and a third end face connecting two adjacent pipes;

[0027] An area of ​​the second end surface is larger than an area of ​​the first end surface, and an area of ​​the third end surface is larger than an area of ​​the first end surface.

[0028] In some embodiments, a first heat-conducting layer is further included, and the first heat-conducting layer is coated on the outer surface of the pipe.

[0029] In some embodiments, the yoke includes a second heat conductive layer coated on a sidewall of the through hole.

[0030] In some embodiments, a partition structure is further included, wherein the partition structure is disposed in the shell body and the partition structure partitions the shell cavity flow channel.

[0031] In some embodiments, the tooth portion includes a first sub-tooth portion and a second sub-tooth portion located on both sides of the yoke portion along the axial direction of the core;

[0032] The windings include a first winding surrounding the first sub-tooth portion and a second winding surrounding the second sub-tooth portion, and at least a portion of the pipe is located between the first winding and the second winding.

[0033] According to a second aspect of the present application, a driving mechanism is provided, comprising a stator assembly as described in any one of the above embodiments.

[0034] According to a third aspect of the present application, a vehicle is also provided, comprising the driving mechanism as described above.

[0035] The stator assembly of the embodiment of the present application includes an iron core and a winding, wherein the iron core includes teeth arranged at intervals and a yoke connected between adjacent teeth, and the winding is arranged around the teeth. A heat exchange flow channel is arranged in the yoke for heat exchange of the winding, so that the space of the winding between the teeth is not occupied, thereby improving the current carrying capacity of the winding, thereby improving the electromagnetic performance of the stator assembly.

[0036] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0038] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0039] Figure 1 is a front view of a stator assembly provided in some embodiments of the present application;

[0040] Figure 2 Some embodiments of the present application provide Figure 1 a side view of the middle stator assembly;

[0041] Figure 3 Some embodiments of the present application provide Figure 2 A front view of the middle stator assembly along the AA direction;

[0042] Figure 4 Some embodiments of the present application provide Figure 1 Schematic diagram of the assembly of the core, windings and pipes in the stator assembly;

[0043] Figure 5 Some embodiments of the present application provide Figure 1 A schematic diagram of the structure of the iron core in the stator assembly;

[0044] Figure 6 is a schematic diagram of the structure of a pipeline assembly provided in some embodiments of the present application;

[0045] Figure 7 Some embodiments of the present application provide Figure 6 A schematic diagram of the enlarged structure of the pipeline assembly at B;

[0046] Figure 8 It is a schematic diagram of the connection structure between the pipeline and the shell cavity flow channel provided in some embodiments of the present application;

[0047] Fig. 9 yes Figure 8 Schematic diagram of the connection between the middle pipe and the shell cavity flow channel;

[0048] Fig.10 It is a schematic diagram of the connection structure between the pipeline and the shell cavity flow channel provided in some embodiments of the present application;

[0049] Fig.11 yes Fig.10 Schematic diagram of the connection between the middle pipe and the shell cavity flow channel;

[0050] Fig.12 It is a schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application;

[0051] Fig.13 It is a schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application;

[0052] Fig.14 It is a schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application;

[0053] Fig.15 It is a schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] The present application provides a stator assembly, including an iron core and a winding, wherein the iron core includes teeth arranged at intervals and a yoke connected between adjacent teeth, and the winding is arranged around the teeth. A heat exchange flow channel is arranged in the yoke for heat exchange of the winding, so that the space of the winding between the teeth is not occupied, thereby improving the current carrying capacity of the winding, thereby improving the electromagnetic performance of the stator assembly.

[0056] The specific structure of the stator assembly in some embodiments is described below with reference to the accompanying drawings.

[0057] See also Figure 1 to Figure 4 , Figure 1 is a front view of a stator assembly provided in some embodiments of the present application, Figure 2 Some embodiments of the present application provide Figure 1 Side view of the stator assembly, Figure 3 Some embodiments of the present application provide Figure 2 Front view of the section of the middle stator assembly along the AA direction, Figure 4 Some embodiments of the present application provide Figure 1 Schematic diagram of the assembly of the core, windings and pipes in the stator assembly.

[0058] The stator assembly 100 includes an iron core 1, a winding 2, a housing 3 and a pipe 401. The iron core 1 includes teeth 11 arranged at intervals and a yoke 12 connected between adjacent teeth 11. The yoke 12 has a through hole 121. The through hole 121 penetrates the yoke 12 in the radial direction of the iron core 1. The winding 2 can be arranged around the side wall of the tooth 11. The pipe 401 is inserted into the through hole 121, so that the space of the yoke 12 is used to arrange the pipe 401 to cool the winding 2, so that the space of the winding 2 between the teeth 11 is not occupied, thereby improving the current carrying capacity of the winding 2, thereby improving the electromagnetic performance of the stator assembly 100.

[0059] In some embodiments, the stator assembly 100 further includes a connecting section 402, wherein the connecting section 402 connects the ends of two adjacent pipes 401 close to the center side of the core 1 (i.e., the inner side of the core), and one connecting section 402 and two pipes 401 connected to the connecting section 402 constitute a pipe assembly 4. Therefore, the cooling fluid can flow in the pipe assembly 4, thereby cooling the winding 2.

[0060] In some embodiments, the stator assembly 100 may be in a circular ring shape, and the stator assembly 100 may further include a liquid inlet pipe 51 and a liquid outlet pipe 52, and the liquid inlet pipe 51 and the liquid outlet pipe 52 may be arranged on the outside (outer ring side) of the housing 3. The pipe assembly 4 may include an inlet end 41 and an outlet end 42, and the inlet end 41 may be connected to the liquid inlet pipe 51, and the outlet end 42 may be connected to the liquid outlet pipe 52.

[0061] In some specific embodiments, the stator assembly 100 further includes a housing 3, the housing 3 is arranged around the core 1, and a housing cavity flow channel 31 is arranged in the housing 3. The inlet end 41 of one of the pipe assemblies 4 is connected to the liquid inlet pipe 51 through the housing cavity flow channel 31, and the outlet end 42 of another of the pipe assemblies 4 is connected to the liquid outlet pipe 52 through the housing cavity flow channel 31. Therefore, the pipe assembly 4 of the embodiment of the present application utilizes the housing cavity flow channel 31 in the housing 3 to communicate with the external liquid inlet pipe 51 and liquid outlet pipe 52.

[0062] like Figure 2 As shown, there are multiple pipe components 4 , one pipe component 4 is inserted into two adjacent through holes 121 , and multiple pipe components 4 are arranged at intervals along the circumferential direction, so the number of pipe components 4 is half of the number of through holes 121 .

[0063] See also Figure 5 , Figure 5 Some embodiments of the present application provide Figure 1 Schematic diagram of the structure of the iron core in the stator assembly.

[0064] In some embodiments, the core 1 may be in the shape of a circular ring, and the teeth 11 may be evenly spaced and arranged in a circular ring (i.e., spaced along the circumference of the core 1), and there is a yoke 12 between each two adjacent teeth 11, and there is a through hole 121 in each yoke 12. The outer diameter of the core 1 may be 100 mm to 400 mm, and the inner diameter of the core 1 may be 50 mm to 300 mm. The dimensions of the teeth 11 along the axial direction may be the same (i.e., the heights are equal), and the dimensions of the yoke 12 along the axial direction (i.e., the thickness) may be 4 mm to 24 mm. Among them, the core 1 has a central axis (i.e., the central axis of the circular core 1), and the "axial direction" is the extension direction of the central axis.

[0065] like Figure 5 As shown, the tooth portion 11 is arranged along the radial direction, and the tooth portion 11 may include a first sub-tooth portion 111 and a second sub-tooth portion 112 located on both sides of the yoke portion 12 (along the axial direction), and the sizes of the first sub-tooth portion 111 and the second sub-tooth portion 112 along the axial direction may be the same (that is, the heights are equal).

[0066] The first sub-tooth portion 111 has a first surface 111a opposite to the second sub-tooth portion 112, and the second sub-tooth portion 112 has a second surface 112a opposite to the first sub-tooth portion 111. Along the direction away from the housing 3 (i.e., from the outside to the inside along the radial direction), the size of the first surface 111a perpendicular to the radial direction gradually decreases, and the size of the second surface 112a perpendicular to the radial direction gradually decreases. In other words, the tooth portion 11 has a first end close to the housing 3 and a second end away from the housing 3, and the volume of the tooth portion 11 gradually decreases from the first end to the second end.

[0067] In some embodiments, Figure 4 As shown, the winding 2 includes a first winding 21 surrounding the first sub-tooth portion 111 and a second winding 22 surrounding the second sub-tooth portion 112. Since the first sub-tooth portion 111 and the second sub-tooth portion 112 are located on both sides of the yoke portion 12 in the axial direction, the first winding 21 and the second winding 22 are also located on both sides of the yoke portion 12 in the axial direction. Since the first winding 21 and the second winding 22 are located between adjacent tooth portions 11, and the pipe assembly 4 is located in the yoke portion 12 between adjacent tooth portions 11, at least part of the pipe assembly 4 is located between the first winding 21 and the second winding 22.

[0068] It should be noted that Figure 2 The section at AA is the section at the position of pipeline component 4. Figure 3 The relative position relationship between the tooth portion 11 and the pipe assembly 4 can be shown. Figure 5 A yoke 12 may have a through hole 121. When the size of the through hole 121 along the circumference of the core 1 is equal to the size of the yoke 12 along the circumference of the core 1, the yoke 12 cannot be seen at the cross-sectional position at AA because the yoke 12 is occupied by the space of the pipe assembly 4. Figure 3 Only the pipe assembly 4 is shown between adjacent teeth 11 , while the yoke 12 is not shown.

[0069] In some embodiments, if the size of the through hole 121 along the circumference of the core 1 is smaller than the size of the yoke 12 along the circumference of the core 1 , it can be seen in the AA section that part of the yoke 12 still exists between the pipe assembly 4 and the tooth 11 .

[0070] In some embodiments, Figure 3 As shown, the stator assembly 100 may further include a partition structure 6, which is disposed in the housing 3, and the partition structure 6 partitions the shell cavity flow channel 31 into a plurality of sub-shell cavity flow channels 311. In other words, the sub-shell cavity flow channels 311 may be surrounded by the partition structure 6, that is, the space without the partition structure 6 is the sub-shell cavity flow channel 311.

[0071] In some embodiments, the shell 3 may include an inner shell 31 and an outer shell 32 , and the outer shell 32 surrounds the inner shell 31 , so the partition structure 6 may connect the outer shell 32 and the inner shell 31 to enhance the structural strength of the shell 3 .

[0072] Combination Figure 3 and Figure 4 The stator assembly 100 may further include a packaging body 7, wherein the packaging body 7 covers both end surfaces of the core 1 and the housing 3 in the axial direction and covers Figure 4 The inner ring side of the structure, namely, covers the winding 2, the pipe assembly 4 and the tooth 11 located on the inner ring side. The material of the package body 7 can be a modified resin material with high thermal conductivity, or a resin material doped with high thermal conductivity particles such as AlN and Al2O3 particles.

[0073] See also Figure 6 and Figure 7 , Figure 6 is a schematic diagram of the structure of a pipeline assembly provided in some embodiments of the present application, Figure 7 Some embodiments of the present application provide Figure 6 Schematic diagram of the enlarged structure of the pipeline component at B.

[0074] In some embodiments, the pipe assembly 4 is U-shaped. Specifically, in a pipe assembly 4 , the distance between the two ends of the two pipes 401 away from the housing 3 may be smaller than the distance between the two ends of the two pipes 401 close to the housing 3 .

[0075] In some embodiments, the areas of the two end faces of the pipe 401 are equal, the pipe 401 has a first end face 401a, and the connecting section 402 has a second end face 402a and a third end face 402b connecting two adjacent pipes 401. The area of ​​the second end face 402a is larger than the area of ​​the first end face 401a, and the area of ​​the third end face 402b is larger than the area of ​​the first end face 401a, which is conducive to the installation of the connecting section 402 on the two adjacent pipes 401.

[0076] In some embodiments, the stator assembly 100 includes a first heat-conducting layer (not shown), which is coated on the outer surface of the pipe 401. The first heat-conducting layer can be a glue or a curing material with a high thermal conductivity, such as a modified resin with a high thermal conductivity. When the pipe 401 is inserted into the through hole 121, the positioning and assembly are completed after the glue or curing material is cured to fill the gap between the pipe 401 and the through hole 121, which can reduce the contact thermal resistance between the pipe 401 and the through hole 121.

[0077] In some embodiments, the yoke 12 includes a second heat-conducting layer (not shown), which is coated on the side wall of the through hole 121. For example, before the pipe 401 is installed, a high thermal conductivity material is evenly applied to the side wall of the through hole 121 to reduce the contact thermal resistance between the pipe 401 and the through hole 121. In addition, the end of the pipe 401 in the insertion direction can be covered with a protective cover to prevent glue or curing material from squeezing into the inside of the pipe 401 and causing an increase in flow resistance.

[0078] See also Figure 8 and Fig. 9 , Figure 8 is a schematic diagram of the connection structure between the pipeline and the shell cavity flow channel provided in some embodiments of the present application, Fig. 9 yes Figure 8 Schematic diagram of the connection between the middle pipe and the shell cavity flow channel.

[0079] In some embodiments, in every two adjacent pipe components 4 , the outlet end 42 of one pipe component 4 is disposed adjacent to the inlet end 41 of another pipe component 4 .

[0080] In some embodiments, the number of the pipeline assemblies 4 is N, where N is greater than 1, and the N pipeline assemblies 4 are connected in series through the shell cavity flow channel 31 .

[0081] It should be noted that when N is equal to 1, there is only one pipeline assembly 4, and one pipeline assembly 4 can cool three windings 2 close to the pipeline assembly 4 (see Figure 4 ).

[0082] In some embodiments, the shell cavity flow channel 31 may include a plurality of sub-shell cavity flow channels 311 spaced apart around the iron core 1, and the sub-shell cavity flow channels 311 are connected between two adjacent pipeline components 4 and respectively connect the inlet end 41 of one pipeline component 4 and the outlet end 42 of another pipeline component 4.

[0083] Specifically, the inlet end 41 of one of the two adjacent pipe assemblies 4 and the outlet end 42 of the other pipe assembly 4 are connected to the same sub-shell cavity flow channel 311; the inlet end 41 and the outlet end 42 of the same pipe assembly 4 are respectively connected to the two adjacent sub-shell cavity flow channels 311, so that N pipe assemblies 4 can be connected in series.

[0084] In some embodiments, in two adjacent pipe assemblies 4, the inlet end 41 of one pipe assembly 4 is connected to the liquid inlet pipe 51 through one sub-shell cavity flow channel 311, and the outlet end 42 of the other pipe assembly 4 is connected to the liquid outlet pipe 52 through another sub-shell cavity flow channel 311.

[0085] That is to say, in addition to the sub-shell cavity flow channel 311 connected between two adjacent pipe assemblies 4, there are also sub-shell cavity flow channels 311 respectively connected to the liquid inlet pipe 51 and the liquid outlet pipe 52. Among them, the sub-shell cavity flow channel 311 connected between the liquid inlet pipe 51 and the inlet end 41 of one pipe assembly 4 is called the first sub-shell cavity flow channel 311a, and the sub-shell cavity flow channel 311 connected between the liquid outlet pipe 52 and the outlet end 42 of another pipe assembly 4 is called the second sub-shell cavity flow channel 311b. Therefore, the coolant can enter the first sub-shell cavity flow channel 311a from the liquid inlet pipe 51, reach the second sub-shell cavity flow channel 311b after passing through multiple pipe assemblies 4 and multiple sub-shell cavity flow channels 311 connected in series, and flow out from the liquid outlet pipe 52.

[0086] like Fig. 9 As shown, a cross and a dot represent the inlet end 41 and the outlet end 42 of a pipe assembly 4, respectively. Fig. 9 It shows 12 pipeline components 4 arranged in sequence. Each small square represents a sub-shell cavity flow channel 311, and two adjacent sub-shell cavity flow channels 311 are separated, and the coolant can flow from the inlet end 41 of the first pipeline component 4 to the outlet end 42 of the twelfth pipeline component 4. Through the full series connection, the flow velocity in the pipeline component 4 is large and the heat exchange effect is good.

[0087] In some embodiments, the number of the pipeline assemblies 4 is N, and every M adjacent pipeline assemblies 4 are arranged in parallel through the shell cavity flow channel 31, wherein M is a factor of N, and M is greater than 1.

[0088] For example, N is 12, that is, there are 12 pipeline assemblies 4, and the factors of 12 are 1, 2, 3, 4, 6 and 12, so M can be 2, 3, 4, 6 and 12. Therefore, every two adjacent pipeline assemblies 4 can be connected in parallel, every three adjacent pipeline assemblies 4 can be connected in parallel, every four adjacent pipeline assemblies 4 can be connected in parallel, every six adjacent pipeline assemblies 4 can be connected in parallel, or every twelve adjacent pipeline assemblies 4 can be connected in parallel.

[0089] It should be noted that "every adjacent M pipeline components" can be understood as: N pipeline components are evenly divided into N / M pipeline groups according to the arrangement order, and the adjacent M pipeline components are called a pipeline group, and "every adjacent M pipeline components" refers to each pipeline group. For example, when N is equal to 12 and M is equal to 2, it means that 12 pipeline components are evenly divided into 6 pipeline groups, two adjacent pipeline components are one pipeline group, and every two adjacent pipeline components refer to each pipeline group.

[0090] In some embodiments, M is less than N, the parallel-connected pipe assemblies 4 are one pipe group 40, and adjacent pipe groups 40 are connected in series through the shell cavity flow channel 31. For example, when N is 12 and M is 2, 3, 4 or 6, 12 pipe assemblies 4 are connected in parallel and in series, and the following embodiments will illustrate this connection mode.

[0091] See also Fig.10 and Fig.11 , Fig.10 is a schematic diagram of the connection structure between the pipeline and the shell cavity flow channel provided in some embodiments of the present application, Fig.11 yes Fig.10 Schematic diagram of the connection between the middle pipe and the shell cavity flow channel. Fig.10 and Fig.11 Twelve pipeline assemblies 4 are shown (the 1st to 12th pipeline assemblies 4 from left to right), and every two adjacent pipeline assemblies 4 are connected in parallel.

[0092] In some embodiments, the shell cavity flow channel 31 includes a first flow channel branch 310 and a second flow channel branch 320 arranged at intervals, and the inlet end 41 of each adjacent M parallel pipe components 4 is connected to the first flow channel branch 310, and the outlet end 42 of each adjacent M parallel pipe components 4 is connected to the second flow channel branch 320. In this way, each adjacent M pipe components 4 can be arranged in parallel through the first flow channel branch 310 and the second flow channel branch 320.

[0093] In some embodiments, the first flow channel branch 310 and the second flow channel branch 320 are at least partially arranged in parallel. Here, "parallel" means that the first flow channel branch 310 and the second flow channel branch 320 are arranged in parallel along the thickness direction of the shell cavity flow channel 31, that is, along the axial direction mentioned above. Fig.11 As shown, the first branch flow channel 310 and the second branch flow channel 320 may be separated by a partition structure 6 .

[0094] Specifically, Fig.11As shown, N is 12, and two pipeline components 4 are connected in parallel. The inlet end 41 (fork) of the first pipeline component 4 and the inlet end 41 (fork) of the second pipeline component 4 are both connected to the first flow channel branch 310, and the outlet end 42 (point) of the first pipeline component 4 and the outlet end 42 (point) of the second pipeline component 4 are both connected to the second flow channel branch 320. Fig.11 The black line in the figure represents the partition structure 6 between the first branch flow channel 310 and the second branch flow channel 320 .

[0095] Similarly, the inlet end 41 of the third pipeline component 4 and the inlet end 41 of the fourth pipeline component 4 are both connected to the first flow channel branch 310 , and the outlet end 42 of the third pipeline component 4 and the outlet end 42 of the fourth pipeline component 4 are both connected to the second flow channel branch 320 .

[0096] The first pipeline assembly 4 and the second pipeline assembly 4 connected in parallel are used as the first pipeline group 40, and the third pipeline assembly 4 and the fourth pipeline assembly 4 connected in parallel are used as the second pipeline group 40. The first pipeline group 40 and the second pipeline group 40 are connected in series through the shell cavity flow channel 31. For example, the second flow channel branch 320 of the first pipeline group 40 is connected to the first flow channel branch 310 of the second pipeline group 40, so that the series connection between the two adjacent pipeline groups 40 is realized.

[0097] In some embodiments, the first flow channel branch 310 is a first wave-shaped flow channel arranged along the circumference of the iron core 1, the second flow channel branch 320 is a second wave-shaped flow channel arranged along the circumference of the iron core 1, and the first wave-shaped flow channel and the second wave-shaped flow channel are at least partially arranged in parallel.

[0098] Among them, "wave type" refers to Fig.11 The upward or downward convex part of the mid-flow channel branch can be understood as a wave. Fig.10 and 11 Taking the structure of as an example, the first flow channel branch 310 and the second flow channel branch 320 are S-shaped, that is, the first flow channel branch 310 and the second flow channel branch 320 both have two waves.

[0099] See also Fig.12 , Fig.12 Schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application. Wherein, N is 12, and three pipeline assemblies 4 are connected in parallel as an example, that is, three pipeline assemblies 4 form a pipeline group 40.

[0100] The inlet end 41 of the first pipeline component 4, the inlet end 41 of the second pipeline component 4 and the inlet end 41 of the third pipeline component 4 are all connected to the first flow channel branch 310, the outlet end 42 of the first pipeline component 4, the outlet end 42 of the second pipeline component 4 and the outlet end 42 of the third pipeline component 4 are all connected to the second flow channel branch 320, and the second flow channel branch 320 of the first pipeline group 40 is connected to the first flow channel branch 310 of the second pipeline group 40, thereby realizing the series connection between the two pipeline groups 40.

[0101] by Fig.12 For example, the first branch flow channel 310 and the second branch flow channel 320 each have three waves.

[0102] See also Fig.13 , Fig.13 Schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application. Wherein, N is 12, and four pipeline assemblies 4 are connected in parallel as an example, that is, four pipeline assemblies 4 form a pipeline group 40.

[0103] The inlet end 41 of the first pipeline assembly 4, the inlet end 41 of the second pipeline assembly 4, the inlet end 41 of the third pipeline assembly 4 and the inlet end 41 of the fourth pipeline assembly 4 are all connected to the first flow channel branch 310, and the outlet end 42 of the first pipeline assembly 4, the outlet end 42 of the second pipeline assembly 4, the outlet end 42 of the third pipeline assembly 4 and the outlet end 42 of the fourth pipeline assembly 4 are all connected to the second flow channel branch 320, so that the four pipeline assemblies 4 are connected in parallel. The second flow channel branch 320 of the first pipeline group 40 is connected to the first flow channel branch 310 of the second pipeline group 40, so as to realize the series connection between the two pipeline groups 40.

[0104] See also Fig.14 , Fig.14 Schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application. Wherein, N is 12, and 6 pipeline assemblies 4 are connected in parallel as an example, that is, 6 pipeline assemblies 4 form a pipeline group 40.

[0105] The inlet ends 41 of the first to sixth pipeline assemblies 4 are all connected to the first flow channel branch 310, and the outlet ends 42 of the first to sixth pipeline assemblies 4 are all connected to the second flow channel branch 320, so that the six pipeline assemblies 4 are connected in parallel. The second flow channel branch 320 of the first pipeline group 40 is connected to the first flow channel branch 310 of the second pipeline group 40, so that the two pipeline groups 40 are connected in series.

[0106] In some embodiments, when M is equal to N, it indicates that all pipeline components 4 are connected in parallel, that is, the inlet ends 41 of the N pipeline components 4 are connected to the first flow channel branch 310 , and the outlet ends 42 of the N pipeline components 4 are connected to the second flow channel branch 320 .

[0107] See also Fig.15 , Fig.15 Schematic diagram of the connection between the pipeline and the shell cavity flow channel provided in some embodiments of the present application. Wherein, N is 12, and 12 pipeline assemblies 4 are connected in parallel as an example (ie, M=N=12), that is, 12 pipeline assemblies 4 form a pipeline group 40.

[0108] The inlet ends 41 of the first to twelfth pipeline components 4 are all connected to the first flow channel branch 310, and the outlet ends 42 of the first to twelfth pipeline components 4 are all connected to the second flow channel branch 320, so that 12 pipeline components 4 are connected in parallel.

[0109] According to a second aspect of the present application, a drive mechanism is provided, the drive mechanism comprising the stator assembly in any of the above embodiments, the drive mechanism has all the beneficial effects of the above stator assembly, which will not be described in detail in the present application. The drive mechanism may be an axial flux motor.

[0110] According to a third aspect of the present application, a vehicle is provided, which includes a driving mechanism in any one of the above embodiments. The vehicle has all the beneficial effects of the above driving mechanism, which will not be described in detail in the present application.

[0111] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make any specific limitation on this.

[0112] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0113] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0114] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0115] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A stator assembly, characterized in that: include: An iron core comprising teeth arranged at intervals and a yoke connected between adjacent teeth; A winding is arranged around the tooth portion; Wherein, a heat exchange channel is provided in the yoke for exchanging heat for the winding.

2. The stator assembly according to claim 1, characterized in that The yoke has a through hole, and the through hole penetrates the yoke along the radial direction of the iron core; The stator assembly further includes a pipe inserted into the through hole, and the heat exchange channel is arranged in the pipe.

3. The stator assembly according to claim 2, characterized in that: Also includes: A connecting section connects the ends of two adjacent pipes close to the center of the iron core, and one connecting section and the two pipes connected to the connecting section constitute a pipe assembly.

4. The stator assembly according to claim 3, characterized in that: Also includes: A shell is arranged around the iron core, and a shell cavity flow channel is arranged in the shell; A liquid inlet pipe and a liquid outlet pipe are arranged outside the shell; Wherein, the pipeline assembly includes an inlet end and an outlet end, the inlet end of one pipeline assembly is connected to the liquid inlet pipe through the shell cavity flow channel, and the outlet end of another pipeline assembly is connected to the liquid outlet pipe through the shell cavity flow channel.

5. The stator assembly according to claim 4, characterized in that: The number of the pipeline components is N, where N is greater than 1, and the N pipeline components are connected in series through the shell cavity flow channel.

6. The stator assembly according to claim 5, characterized in that In every two adjacent pipe assemblies, the outlet end of one pipe assembly is arranged adjacent to the inlet end of another pipe assembly.

7. The stator assembly according to claim 5, characterized in that The shell cavity flow channel comprises a plurality of sub-shell cavity flow channels which are arranged at intervals around the iron core; the sub-shell cavity flow channels are connected between two adjacent pipeline components and are respectively connected to the inlet end of one pipeline component and the outlet end of another pipeline component.

8. The stator assembly according to claim 7, characterized in that In two adjacent pipeline assemblies, the inlet end of one pipeline assembly is connected to the liquid inlet pipe through one sub-shell cavity flow channel, and the outlet end of the other pipeline assembly is connected to the liquid outlet pipe through another sub-shell cavity flow channel.

9. The stator assembly according to claim 4, characterized in that: The number of the pipeline components is N, and N is greater than 1, and every M adjacent pipeline components are arranged in parallel through the shell cavity flow channel, wherein M is a factor of N, and M is greater than 1.

10. The stator assembly according to claim 9, characterized in that The shell cavity flow channel includes a first flow channel branch and a second flow channel branch arranged at intervals, the inlet end of each adjacent M parallel pipe assemblies is connected to the first flow channel branch, and the outlet end of each adjacent M parallel pipe assemblies is connected to the second flow channel branch.

11. The stator assembly according to claim 10, characterized in that The first flow channel branch is a first wave-shaped flow channel arranged along the circumference of the iron core, the second flow channel branch is a second wave-shaped flow channel arranged along the circumference of the iron core, and the first wave-shaped flow channel and the second wave-shaped flow channel are at least partially arranged in parallel.

12. The stator assembly according to claim 10, characterized in that The M is equal to N, the inlet ends of the N pipeline components are connected to the first flow channel branch, and the outlet ends of the N pipeline components are connected to the second flow channel branch.

13. The stator assembly according to any one of claims 10 to 11, characterized in that: The M is smaller than N, the parallel-connected pipeline components form a pipeline group, and adjacent pipeline groups are connected in series through the shell cavity flow channel.

14. The stator assembly according to claim 3, characterized in that The pipe has a first end face close to the center of the core, and the connecting section has a second end face and a third end face connecting two adjacent pipes; An area of ​​the second end surface is larger than an area of ​​the first end surface, and an area of ​​the third end surface is larger than an area of ​​the first end surface.

15. The stator assembly according to claim 2, characterized in that The invention also includes a first heat-conducting layer, wherein the first heat-conducting layer is coated on the outer surface of the pipe.

16. The stator assembly according to claim 2, characterized in that The yoke includes a second heat-conducting layer coated on a side wall of the through hole.

17. The stator assembly according to claim 4, characterized in that It also includes a partition structure, which is arranged in the shell body and partitions the shell cavity flow channel.

18. The stator assembly according to claim 2, characterized in that The tooth portion includes a first sub-tooth portion and a second sub-tooth portion located on both sides of the yoke portion along the axial direction of the iron core; The windings include a first winding surrounding the first sub-tooth portion and a second winding surrounding the second sub-tooth portion, and at least a portion of the pipe is located between the first winding and the second winding.

19. A driving mechanism, characterized in that: The stator assembly comprises the stator assembly according to any one of claims 1 to 18.

20. A vehicle, characterized in that: Includes the drive mechanism described in claim 19.

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