Cooling structure, stator, axial magnetic field motor and assembly method

Abstract

The present invention provides a cooling structure, a stator, an axial magnetic field motor, and an assembly method, wherein the cooling structure includes a cooling plate, the cooling plate including a rotor-facing surface, a stator-facing surface, and a plurality of stator sleeve holes extending through the rotor-facing surface and the stator-facing surface. A flow channel is also provided between the rotor-facing surface and the stator-facing surface, the flow channel surrounding each of the stator sleeve holes. The cooling plate can be built into the interior of the motor, positioned between the stator and the rotor. A cooling medium is then introduced into the flow channel to transfer heat from the rotor and the stator via the flowing cooling medium. Compared to conventional housing water channel arrangements, this shortens the heat transfer paths between the rotor and the stator and the cooling structure, thereby effectively improving heat dissipation and ensuring reliable motor operation.

Description

Technical Field

[0001] The present invention relates to the field of axial magnetic field motors, and in particular to a cooling structure, a stator, an axial magnetic field motor and an assembly method. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its primary function is to generate driving torque, serving as a power source for electrical appliances and various machines. Motors can be categorized into radial-field motors and axial-field motors. Axial-field motors, also known as disc motors, are widely used due to their compact size, light weight, short axial dimensions, and high power density, making them suitable for most thin-profile installations.

[0003] A motor includes a housing, a stator, and a rotor located within the housing. The stator is the electrically powered, stationary part, primarily composed of an iron core and a coil wound around the core. The coil is made of enameled wire. The stator generates a rotating magnetic field, which causes the rotor to be cut by magnetic lines of force within the magnetic field, generating current. During operation, the motor generates a significant amount of heat, much of which is generated by the coil, causing the coil temperature to rise. If the coil temperature is too high, it can damage the insulation layer on the coil surface, causing a short circuit between the enameled wires and potentially causing the motor to burn out. Furthermore, the permanent magnets on the rotor also generate some heat. If the permanent magnets are too hot, they can demagnetize, reducing motor performance. Therefore, the motor requires a cooling mechanism to reduce the temperature.

[0004] The cooling structure of existing motors is mostly arranged on the casing in the form of water channels. Taking the dual-stator single-rotor axial magnetic field motor as an example, Figure 1 The rotor 2000 is maintained between the two stators 1000 with an air gap and is encapsulated as a whole in the casing 3000, wherein the casing 3000 includes a bottom plate 3100 abutting against the stator core 1100, and a water channel c is arranged inside the bottom plate 3100 to cool the motor. However, the rotor 2000 and the coil 1200 are respectively far away from the water channels c on both sides. Therefore, the heat of the rotor 2000 needs to pass through the air gap a, the stator core 1100, the slot wedge b and the coil 1200 to be transferred to the water channel c, and the heat of the coil 1200 needs to pass through the insulating paper 1201 and the stator core 1100 to be transferred to the water channel c. It can be seen that the heat transfer path of the rotor 2000 and the coil 1200 is long, resulting in a large conduction thermal resistance and low heat dissipation efficiency. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a cooling structure arranged inside the motor and effectively close to the rotor, coil and stator core to improve the heat dissipation performance, as well as a stator, axial magnetic field motor and assembly method having the cooling structure.

[0006] In accordance with one object of the present invention, the present invention provides a cooling structure, comprising a cooling plate, wherein the cooling plate comprises a rotor opposing surface, a stator opposing surface, and a plurality of stator sleeve holes penetrating the rotor opposing surface and the stator opposing surface, wherein a flow channel is further provided between the rotor opposing surface and the stator opposing surface, and the flow channel surrounds each of the stator sleeve holes.

[0007] As a preferred embodiment, the flow channel includes an outer ring flow channel, an inner ring flow channel, and a plurality of branch flow channels connected between the outer ring flow channel and the inner ring flow channel, and the stator sleeve hole is formed between two adjacent branch flow channels.

[0008] As a preferred embodiment, a plurality of blocking members are respectively provided in the outer ring flow channel and the inner ring flow channel, and the blocking members located in the outer ring flow channel and the inner ring flow channel are staggered.

[0009] As a preferred embodiment, the number of the cooling disks is two, and the cooling structure further includes a connecting pipe, which respectively connects the opposite surfaces of the stators of the two cooling disks so that the opposite surfaces of the rotors of the two cooling disks are externalized, and the stator sleeve holes of the two cooling disks correspond one to one.

[0010] As a preferred embodiment, a plurality of barrier members are respectively provided in the outer ring flow channel and the inner ring flow channel, and the barrier members located in the outer ring flow channel and the inner ring flow channel are arranged relative to each other to divide the flow channel into a plurality of circumferentially arranged chambers, and the chambers located in the two cooling disks are staggered along the circumferential direction and are connected through the connecting pipe so that the cooling medium passes back and forth through the chambers of the two cooling disks in turn.

[0011] As a preferred embodiment, the connecting pipe is connected to the inner ring flow channel to form corresponding inlets and outlets on the inner ring flow channels of the two cooling disks, and is located on the same inner ring flow channel, and adjacent inlets and outlets are blocked.

[0012] According to another object of the present invention, the present invention also provides a stator, including the cooling structure of the above embodiment, the stator further including an iron core winding unit, the iron core winding unit including a stator core and a coil assembly, the stator core including a plurality of circumferentially spaced tooth blocks, each of the tooth blocks being sleeved with a coil assembly, the cooling plate being sleeved on the stator core in a one-to-one correspondence between the stator sleeve holes and the tooth blocks, and the rotor-relative surface of the cooling plate being arranged outward.

[0013] As a preferred embodiment, the stator core further includes a yoke, and the tooth block is arranged on the yoke.

[0014] As a preferred embodiment, the coil assembly is located between the yoke and the cooling plate, so that the stator-facing surface of the cooling plate abuts against the coil assembly.

[0015] As a preferred embodiment, both sides of the tooth block are respectively recessed inward to form a recess, the coil assembly is embedded in the recess, and the cooling plate is engaged between two adjacent coil assemblies so that the stator-facing surface of the cooling plate abuts against the yoke plate.

[0016] According to another object of the present invention, the present invention also provides an axial magnetic field motor, including the stator of the above embodiment, the axial magnetic field motor also includes a rotor and a casing, and the stator is encapsulated inside the casing with the opposite surface of the rotor facing the rotor.

[0017] As a preferred embodiment, the number of the cooling plate and the iron core winding unit of the stator is one each, and the number of the rotor is one. When the number of the stators is two, the rotor air gap is maintained between the two stators, so that the axial magnetic field motor forms a single-rotor dual-stator motor.

[0018] As a preferred embodiment, the casing includes two shells, each of which includes a bottom plate and an outer plate extending along the outer edge of the bottom plate. Each of the shells is fixed with a corresponding stator. The stator is located in the area surrounded by the outer plates and is fixed to the bottom plate through the yoke of the stator core. The two shells are fixed with the outer plates relatively abutted in a manner that the bottom plate is placed outside.

[0019] As a preferred embodiment, the outer ring flow channel extends outward to form adjacent inlet and outlet sections, the inlet and outlet sections are separated by partitions to form adjacent inlet and outlet sections, and the outer plate is provided with a slot for the inlet and outlet sections to pass through.

[0020] As a preferred embodiment, the number of the cooling plates and the iron core winding units of the stator is two each, and the number of the stator is one, and the number of the rotors is two, the two iron core winding units are respectively arranged between the two rotors with the opposite surfaces of the rotors facing the rotors, the tooth blocks of the two iron core winding units correspond to each other one by one, and are integrally connected through the yoke plate to form a whole, so that the axial magnetic field motor forms a dual-rotor single-stator motor.

[0021] As a preferred embodiment, the casing includes an outer plate and two bottom plates, and the two cooling plates are respectively engaged with the two ends of the outer plate so that the two integrally connected core winding units are fixed between the two cooling plates, and the two ends of the outer plate are closed by the bottom plate.

[0022] As a preferred embodiment, when the tooth blocks of the two core winding units correspond one to one and are connected as one, a plurality of spaced-apart clips are provided on the inner wall of the outer plate so that the tooth blocks that correspond one to one and are connected as one are engaged between two adjacent clips.

[0023] As a preferred embodiment, the inlet and outlet sections of one cooling plate are used for leading out the cooling medium, and the inlet and outlet sections of the other cooling plate are used for introducing the cooling medium.

[0024] As a preferred embodiment, the casing further includes an inner plate and the support block, the inner plate is sleeved inside the stator, the support block is arranged on the inner wall of the outer plate, and the cooling plate support is fixed on the inner plate and / or the support block.

[0025] According to another object of the present invention, the present invention further provides an assembly method of an axial magnetic field motor, comprising the following steps:

[0026] S100, providing a cooling plate, wherein the cooling plate includes a rotor-opposing surface, a stator-opposing surface, and a plurality of stator sleeve holes penetrating the rotor-opposing surface and the stator-opposing surface;

[0027] S200, aligning the stator-opposing surface of the cooling plate toward the core winding unit, and sleeved on the core winding unit using the stator sleeve hole to form a stator;

[0028] S300 , placing the rotor and the rotor opposite surfaces of the cooling plate opposite to each other, and encapsulating the entire rotor in a casing.

[0029] As a preferred embodiment, the core winding unit includes a stator core and a coil assembly, and the stator core includes a plurality of tooth blocks. Then, in step S200, the coil assembly is sleeved on the tooth block, and the tooth block is inserted into the stator sleeve hole of the cooling plate to confine the coil assembly between the stator core and the cooling plate.

[0030] As a preferred embodiment, the number of the core winding units and the cooling plates are both two, and the two core winding units are back to back and connected as a whole to form a whole, and the step S200 includes: arranging the two cooling plates on both sides of the two integrally connected core winding units.

[0031] As a preferred embodiment, the housing includes two shells, and then in the step S300, a stator is installed in each of the shells, and then the two shells are relatively connected to keep the rotor air gap between the two stators.

[0032] As a preferred embodiment, the casing includes an outer plate and two bottom plates, and the step S300 includes respectively engaging the two cooling plates of the stator at the two ends of the outer plate so that the two integrally connected core winding units are fixed between the two cooling plates, and encapsulating the two bottom plates at the two ends of the outer plate.

[0033] Compared with the existing technology, this technical solution has the following advantages:

[0034] The cooling plate can be arranged inside the motor, between the stator and rotor, with the rotor-facing surface of the cooling plate facing the rotor and the stator-facing surface facing the stator. A cooling medium is introduced into the flow channel, allowing heat from the rotor and stator to be transferred through the flowing cooling medium. Compared to conventional housing water channel arrangements, this shortens the heat transfer path between the rotor and stator and the cooling structure, effectively improving heat dissipation and ensuring reliable motor operation. By omitting the housing water channel, the structure is simplified, reducing manufacturing difficulty and cost. The cooling plate is also provided with a flow channel for uniform circulation of the cooling medium, effectively ensuring cooling. Furthermore, the number of cooling plates can be one or two, allowing for application in various types of axial magnetic field motors, thereby improving applicability. The cooling plate can abut the coil assembly or engage between two adjacent coil assemblies, not only improving heat dissipation performance but also preventing the coils from separating from the stator core. Compared to conventional systems, the slot wedge structure is omitted, reducing motor components, lowering costs, and effectively improving assembly efficiency. In addition, it can also be applied to different types of axial magnetic field motors, thereby improving applicability.

[0035] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of an existing axial magnetic field motor;

[0037] Figure 2 This is a schematic structural diagram of a first embodiment of the cooling structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the interior of the first embodiment of the cooling structure of the present invention;

[0039] Figure 4 This is a schematic structural diagram of a second embodiment of the cooling structure of the present invention;

[0040] Figure 5 A side view of a second embodiment of the cooling structure of the present invention;

[0041] Figure 6for Figure 5 Middle section view along AA direction;

[0042] Figure 7 for Figure 5 Middle section view along BB direction;

[0043] Figure 8 This is a schematic diagram of the flow channel in the second embodiment of the cooling structure of the present invention;

[0044] Figure 9 This is a schematic structural diagram of a first embodiment of the stator according to the present invention;

[0045] Figure 10 This is a schematic diagram of the stator core structure in the first embodiment of the stator according to the present invention;

[0046] Figure 11 This is a schematic structural diagram of a coil assembly in the first embodiment of the stator according to the present invention;

[0047] Figure 12 This is a schematic structural diagram of a second embodiment of the stator according to the present invention;

[0048] Figure 13 A schematic diagram of the coordination between the stator core and the coil assembly in the second embodiment of the stator according to the present invention;

[0049] Figure 14 This is a schematic diagram of the stator core structure in the second embodiment of the stator according to the present invention;

[0050] Figure 15 This is a schematic structural diagram of a coil assembly in the second embodiment of the stator according to the present invention;

[0051] Figure 16 This is a schematic diagram of the stator core structure in the third embodiment of the stator according to the present invention;

[0052] Figure 17 This is a schematic structural diagram of a fourth embodiment of the stator according to the present invention;

[0053] Figure 18 This is a schematic diagram of the stator core structure in the fourth embodiment of the stator according to the present invention;

[0054] Figure 19 This is a schematic structural diagram of a fifth embodiment of the stator according to the present invention;

[0055] Figure 20 A schematic diagram of the coordination between the stator core and the coil assembly in the fifth embodiment of the stator according to the present invention;

[0056] Figure 21 This is a schematic structural diagram of a first embodiment of the axial magnetic field motor according to the present invention;

[0057] Figure 22A schematic diagram of the coordination between the cooling disk and the stator core in the first embodiment of the axial magnetic field motor according to the present invention;

[0058] Figure 23 A schematic diagram of the cooperation between the housing and the stator core of the first embodiment of the axial magnetic field motor according to the present invention;

[0059] Figure 24 This is a schematic structural diagram of the housing in the first embodiment of the axial magnetic field motor according to the present invention;

[0060] Figure 25 This is a schematic structural diagram of a second embodiment of the axial magnetic field motor according to the present invention;

[0061] Figure 26 This is a schematic structural diagram of the outer plate in the second embodiment of the axial magnetic field motor according to the present invention;

[0062] Figure 27 This is a schematic structural diagram of a third embodiment of the axial magnetic field motor according to the present invention;

[0063] Figure 28 This is a schematic structural diagram of a fourth embodiment of the axial magnetic field motor according to the present invention;

[0064] Figure 29 This is a schematic structural diagram of a fifth embodiment of the axial magnetic field motor according to the present invention;

[0065] Figure 30 This is a schematic structural diagram of the outer plate in the fourth embodiment of the axial magnetic field motor according to the present invention. DETAILED DESCRIPTION

[0066] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0067] like Figures 2 to 8 As shown, the cooling structures 1300a and 1300b include a cooling plate 1310. The cooling plate 1310 includes a rotor-opposing surface 1311, a stator-opposing surface 1312, and a plurality of stator sleeve holes 1313 passing through the rotor-opposing surface 1311 and the stator-opposing surface 1312. A flow channel 1314 is further provided between the rotor-opposing surface 1311 and the stator-opposing surface 1312, and the flow channel 1314 surrounds each of the stator sleeve holes 1313.

[0068] The cooling plate 1310 can be arranged inside the motor, between the stator and the rotor, with the rotor-facing surface 1311 of the cooling plate 1310 facing the rotor and the stator-facing surface 1312 facing the stator. A cooling medium, such as a liquid or gas, is then introduced into the flow channel 1314 to transfer heat between the rotor and the stator via the flowing cooling medium. Compared to conventional housing water channel arrangements, this shortens the heat transfer paths between the rotor and the stator and the cooling structures 1300a and 1300b, respectively, thereby effectively improving heat dissipation and ensuring reliable motor operation. Furthermore, by omitting the housing water channel, the structure can be simplified, and processing difficulty and cost can be reduced. Furthermore, the stator sleeve holes 1313 correspond to the tooth blocks of the stator core, and the flow channel 1314 surrounds each stator sleeve hole 1313, further improving heat dissipation for the motor.

[0069] Figure 2 and Figure 3 A schematic diagram of a cooling structure 1300a according to a first embodiment is shown. The cooling disk 1310 is a single, generally flat, disc-shaped cooling disk, ensuring the axial dimension of the axial magnetic field motor is small. The cooling structure 1300a according to the first embodiment can be applied to axial magnetic field motors with a single rotor and a single stator, or single rotor and dual stators.

[0070] refer to Figure 3 The flow channel 1314 includes an outer ring flow channel 13141, an inner ring flow channel 13142, and a plurality of branch flow channels 13143 connected between the outer ring flow channel 13141 and the inner ring flow channel 13142, and the stator sleeve hole 1313 is formed between two adjacent branch flow channels 13143.

[0071] Specifically, the inner ring flow channel 13142 and the outer ring flow channel 13141 are arranged from the inside to the outside, and the plurality of branch flow channels 13143 are arranged at intervals in a circumferential manner so that the stator sleeve hole 1313 is formed between two adjacent branch flow channels 13143. When the tooth block of the stator core is inserted into the stator sleeve hole 1313, the inner ring flow channel 13142 and the outer ring flow channel 13141 are arranged on both radial sides of the tooth block, and the branch flow channels 13143 are respectively arranged on both circumferential sides of the tooth block, so that the flow channel 1314 surrounds the tooth block, thereby improving the heat dissipation performance of the stator core. The shapes of the stator sleeve hole 1313 and the tooth block are adapted to each other, for example, both are fan-shaped, with reference to FIG. Figure 2 and Figure 3 .

[0072] Continue to refer Figure 3A plurality of barriers 1315 are respectively provided in the outer and inner flow channels 13141, 13142, and the barriers 1315 are staggered in the outer and inner flow channels 13141, 1314. This allows the cooling medium to flow back and forth between the outer and inner flow channels 13141, 1314 through the branch flow channels 13143, thereby reducing flow resistance to a certain extent and improving heat dissipation.

[0073] The blocking member 1315 located in the outer ring flow channel 13141 is located between the two adjacent branch flow channels 13143, which can block the cooling medium from passing through and allow the cooling medium to enter the inner ring flow channel 13142 along the branch flow channel 13143, and then be blocked by the blocking member 1315 in the inner ring flow channel 13142, and enter the outer ring flow channel 13141 through the other branch flow channel 13143, and so on. The cycle allows the cooling medium to pass through the flow channel 1314 in turn along the circumferential direction to realize the flow of the cooling medium.

[0074] Continue to refer Figure 3 The outer annular flow channel 13141 extends outward to form adjacent inlet and outlet sections 1316. The inlet and outlet sections 1316 are separated by a partition 13163 to form adjacent inlet 13161 and outlet 13162. The inlet 13161 and outlet 13162 are blocked by the partition 13163. As a result, the cooling medium introduced from the inlet 13161 can only pass through the flow channel 1314 in a counterclockwise direction and then be discharged from the outlet 13162. Because the inlet 13161 and outlet 13162 are adjacent and concentrated, the cooling contact area of ​​the flow channel 1314 is increased, thereby improving the cooling performance.

[0075] The cooling disk 1310 can be made of a material with high strength and thermal conductivity and low magnetic permeability and electrical conductivity, such as alumina or aluminum alloy, to ensure the better cooling performance of the cooling disk 1310 while avoiding the setting of the cooling disk 1310 affecting the working performance of the motor.

[0076] Figures 4 to 8 A structural schematic diagram of the cooling structure 1300b of the second embodiment is shown, wherein the number of the cooling disks 1310 is two, and the cooling structure further includes a connecting pipe 1320, wherein the connecting pipe 1320 is respectively connected to the stator opposing surfaces 1312 of the two cooling disks 1310, so that the rotor opposing surfaces 1311 of the two cooling disks 1310 are externalized, and the stator sleeve holes 1313 of the two cooling disks 1310 correspond one to one.

[0077] The cooling structure 1300b of the second embodiment can be applied to an axial magnetic field motor with dual rotors and a single stator, wherein the stator is sleeved on the outside of the connecting tube 1320 and is embedded between the two cooling plates 1310. At this time, the axial sides of the stator correspond to the stator opposing surfaces 1312 of the cooling plates 1310 on both sides, and the two rotors correspond to the rotor opposing surfaces 1311 of each cooling plate 1310, and are externally placed on the axial sides of the cooling structure 1300b.

[0078] The cooling structure 1300b of the second embodiment can be the same as the first embodiment, and each cooling plate 1310 can independently introduce and extract the cooling medium. Of course, the cooling medium flows back and forth between the two cooling plates 1310 through the connecting pipe 1320 to increase the contact area between the cooling medium and the stator and improve the cooling performance. Figures 6 to 8 , a plurality of blocking members 1315 are respectively provided in the outer ring flow channel 13141 and the inner ring flow channel 13142, and the blocking members 1315 located in the outer ring flow channel 13141 and the inner ring flow channel 13142 are arranged relative to each other to separate the flow channel 1314 into a plurality of circumferentially arranged chambers 13140, and the chambers 13140 located in the two cooling disks 1310 are staggered along the circumferential direction and are connected through the connecting pipe 1320, so that the cooling medium passes through the chambers 13140 of the two cooling disks 1310 in turn.

[0079] Specifically, the connecting pipe 1320 is divided into a plurality of pipe portions 1322 along the circumferential direction. Figure 8 Since the chambers 13140 located on the two cooling disks 1310 are staggered along the circumferential direction, the chamber 13140 of one cooling disk 1310 is respectively connected to the two pipe portions 1322 to correspond to the two chambers 13140 connected to the other cooling disk 1310, so that the cooling medium flows back and forth in the chambers 13140 of the two cooling disks 1310 in turn through the pipe portions 1322, and since the stator is mounted on the outside of the connecting pipe 1320, heat can also be transferred inside the stator through the pipe portion 1322.

[0080] like Figure 6 and Figure 7 As shown, the connecting pipe 1320 is connected to the inner ring flow channel 13142 to form corresponding inlets 13144 and outlets 13145 on the inner ring flow channels 13142 of the two cooling plates 1310, and is located on the same inner ring flow channel 13142, and blocks adjacent inlets 13144 and outlets 13145.

[0081] Furthermore, the inlet 13144 and the outlet 13145 correspond to the two ends of the tube portion 1322, respectively. Figure 8 That is, the cooling medium located in the outer ring flow channel 13141 flows to the inner ring flow channel 13142 through the branch flow channel 13143, enters the pipe portion 1322 through the outlet 13145 thereon, and then enters the chamber 13140 of the other cooling disk 1310, specifically entering from the inlet 13144 of the inner ring flow channel 13142 of the chamber 13140, and then flows to the outer ring flow channel 13141 through the branch flow channel 13143. In this cycle, the cooling medium flows back and forth in the chambers 13140 of the two cooling disks 1310 in turn through the pipe portion 1322.

[0082] Furthermore, the inlets 13144 and outlets 13145 located on the same inner ring flow channel 13142 are spaced apart, and baffles 1317 are provided between adjacent inlets 13144 and outlets 13145 for blocking purposes. Each chamber 13140 corresponds to an inlet 13144 and an outlet 13145, respectively, and the inlets 13144 and outlets 13145 correspond to the two chambers 13140 of another cooling disk 1310, respectively. The baffle 1317 is provided between the inlets 13144 and outlets 13145 to prevent the cooling medium from directly passing through the inlets 13144 and outlets 13145 without flowing through the outer ring flow channel 13141 and the branch flow channel 13143, which could affect cooling performance. Specifically, the cooling medium introduced from the inlet 13144 is blocked by the baffle 1317 and can only flow to the outer ring flow channel 13141 through the branch flow channel 13143, and then flow to the discharge port 13145 through another branch flow channel 13143, so that the cooling medium can have a flow effect on the outer ring flow channel 13141, the inner ring flow channel 13142 and the branch flow channel 13143.

[0083] like Figures 4 to 8 As shown, the outer ring flow channel 13141 of the cooling disk 1310 extends outward to form an inlet and outlet section 1316, wherein the inlet and outlet section 1316 of one cooling disk 1310 is used for leading out the cooling medium, and the inlet and outlet section 1316 of the other cooling disk 1310 is used for introducing the cooling medium.

[0084] It should be noted that the inlet and outlet section 1316 for introducing the cooling medium is connected to the chamber 13140 of the cooling disk 1310, and the inlet 13144 of the chamber 13140 is removed. In other words, the inlet 13144 of the chamber 13140 is replaced by the inlet and outlet section 1316 for introducing the cooling medium. Similarly, the inlet and outlet section 1316 for withdrawing the cooling medium is connected to the chamber 13140 of the cooling disk 1310, and the outlet 13145 of the chamber 13140 is removed.

[0085] like Figure 5 As shown, the connecting tube 1320 is divided into two tube bodies 1321 in the middle. Each tube body 1321 is connected to a corresponding cooling plate 1310. In this way, the two cooling plates 1310 are respectively passed through the tube bodies 1321 and inserted from both ends of the stator for easy assembly. The two tube bodies 1321 can be connected by means of a snap-fit ​​or sleeve connection, and sealing structures such as sealing rings can even be added to improve sealing performance and prevent leakage of the cooling medium.

[0086] In summary, the cooling disk 1310 can be arranged inside the motor and located between the stator and the rotor, wherein the rotor-facing surface 1311 of the cooling disk 1310 faces the rotor, and the stator-facing surface 1312 faces the stator. Then, by introducing a cooling medium into the flow channel 1314, heat from the rotor and stator is transferred through the flowing cooling medium. Compared to conventional housing water channel arrangements, this shortens the heat transfer paths between the rotor and stator and the cooling structures 1300a and 1300b, respectively, thereby effectively improving the heat dissipation effect and ensuring reliable operation of the motor. Furthermore, by omitting the provision of water channels on the housing, the structure can be simplified, and the difficulty and cost of processing can be reduced. The cooling disk 1310 is also provided with a flow channel 1314 for uniform circulation of the cooling medium, effectively ensuring the cooling effect. Furthermore, the number of cooling disks 1310 can be one or two, and can be applied to different types of axial magnetic field motors, thereby improving applicability.

[0087] Figures 9 to 11A structural schematic diagram of a stator 1000a of a first embodiment is shown, wherein the stator 1000a includes the cooling structure 1300a of the above embodiment, and the stator 1000a also includes an iron core winding unit. The number of the iron core winding unit is consistent with the number of the cooling disk 1310, both of which are one. The iron core winding unit includes a stator core 1100 and a coil assembly 1200. The stator core 1100 includes a yoke 1110 and a plurality of tooth blocks 1120. The plurality of tooth blocks 1120 are arranged circumferentially at intervals on the yoke 1110, and each of the tooth blocks 1120 is sleeved with a coil assembly 1200. The cooling disk 1310 is sleeved on the stator core 1100 in a one-to-one correspondence between the stator sleeve hole 1313 and the tooth block 1120, and the rotor opposite surface 1311 of the cooling disk 1310 is arranged outwardly relative to the yoke 1110. Figure 2 and Figure 3 .

[0088] Since the stator 1000a adopts the cooling structure 1300a of the above embodiment, the beneficial effects of the stator 1000a can refer to the cooling structure 1300a of the above embodiment. The stator core 1100 can be formed by winding silicon steel sheets.

[0089] refer to Figure 10 The yoke 1110 is annular, the tooth block 1120 is extended and connected to the inner and outer edges of the yoke 1110, and the tooth block 1120 is adapted to the shape of the stator sleeve hole 1313, both of which are fan-shaped. Figure 2 and Figure 3 .

[0090] refer to Figure 9 and Figure 11 The coil assembly 1200 is adapted to the shape of the tooth block 1120 and is in a fan-shaped annular structure to surround the tooth block 1120. The height of the tooth block 1120 is higher than the height of the coil assembly 1200. In this way, when the coil assembly 1200 is sleeved on the tooth block 1120, the protruding portion of the tooth block 1120 relative to the coil assembly 1200 is correspondingly inserted into the stator sleeve hole 1313 of the cooling plate 1310, so that the stator-facing surface 1312 of the cooling plate 1310 abuts against the coil assembly 1200. At this time, the coil assembly 1200 is located between the yoke 1110 and the cooling plate 1310. Figure 9It can be seen that the tooth block 1120 and the coil assembly 1200 are in contact with the cooling plate 1310, respectively, to improve the heat dissipation performance of the core winding unit. The cooling plate 1310 also prevents the coil from separating from the stator core 1100. Compared with the prior art, the slot wedge structure is omitted, reducing the number of motor components, reducing costs, and effectively improving assembly efficiency.

[0091] refer to Figure 11 The coil assembly 1200 includes a coil 1201. An insulating heat-conducting structure may be provided between the coil 1201 and the cooling plate 1310 to ensure insulation and heat transfer between the coil 1201 and the cooling plate 1310. Figure 11 The insulating heat-conducting structure can also be insulating paper 1202. The insulating paper 1202 is wrapped on both sides of the circumference of the coil 1201, thereby ensuring the insulation between the coil 1201 and the cooling plate 1310 and enabling the heat of the coil 1201 to be transferred to the cooling plate 1310 through the insulating paper 1202.

[0092] Figures 12 to 15 The figure shows the structure of the stator 1000b of the second embodiment. It differs from the first embodiment in that both circumferential sides of the tooth block 1120 are recessed inward to form recesses 1121. The coil assemblies 1200 are embedded in the recesses 1121. The cooling plate 1310 is engaged between two adjacent coil assemblies 1200, so that the stator-facing surface 1312 of the cooling plate 1310 abuts the yoke plate 1110. This further increases the contact area between the cooling plate 1310 and the stator core 1100 and the coil assemblies 1200, thereby further improving heat dissipation performance.

[0093] refer to Figures 12 to 14 The recess 1121 extends from the connection position between the tooth block 1120 and the yoke plate 1110 and along the height direction of the tooth block 1120, wherein the extension height of the recess 1121 is less than the height of the tooth block 1120, so that when the cooling plate 1310 is engaged between two adjacent coil assemblies 1200, the tooth block 1120 can also contact the cooling plate 1310.

[0094] The insulating heat-conducting structure between the coil 1201 and the cooling plate 1310 can be made of a high-thermal-conductivity aluminum oxide sheet or coating, and the joint surface is filled with thermal grease or thermal adhesive.

[0095] Figure 16A schematic diagram of the structure of a stator 1000c according to the third embodiment is shown. This stator 1000c differs from the first embodiment in that it comprises two core winding units and two cooling plates 1310, each of which is connected to the yoke plate 1110 in a single-faced manner. Furthermore, the tooth blocks 1120 of the two core winding units correspond one to one, so that the two cooling plates 1310 are positioned externally on either side of the two integrally connected core winding units. The stator 1000c according to the third embodiment can be applied to a single-stator, dual-rotor axial-field motor.

[0096] Figure 17 and Figure 18 A schematic diagram of the structure of a stator 1000d according to the fourth embodiment is shown. This stator 1000d differs from the second embodiment in that the number of core winding units and cooling plates 1310 is two each. The two core winding units face each other and are integrally connected via a yoke plate 1110 to form a single unit. Furthermore, the tooth blocks 1120 of the two core winding units correspond one-to-one, so that the two cooling plates 1310 are externally positioned on either side of the two integrally connected core winding units. The stator 1000c according to the fourth embodiment can be applied to a single-stator, dual-rotor axial-field motor.

[0097] Figure 19 and Figure 20 A schematic diagram of the structure of a stator 1000e according to the fifth embodiment is shown. It includes the cooling structure 1300b according to the second embodiment and two core winding units. The tooth blocks 1120 of the two core winding units correspond to each other and are integrally connected by the yoke 1110 to form a whole. This whole structure can be sleeved outside the connecting tube 1320 and internally positioned between the two cooling plates 1310. In this case, the axial sides of the whole structure correspond to the stator-facing surfaces 1312 of the cooling plates 1310 on both sides, while the rotor-facing surfaces 1311 are located externally on the axial sides of the cooling structure 1300b. The stator 1000c according to the fifth embodiment can be applied to a single-stator, dual-rotor axial magnetic field motor.

[0098] The shape of the tooth block 1120 may be the same as that of the third embodiment, so that the coil assembly 1200 is located between the yoke 1110 and the cooling plate 1310 , and the stator-facing surface 1312 of the cooling plate 1310 abuts against the coil assembly 1200 .

[0099] Of course, the shape of the tooth block 1120 can be the same as that of the fourth embodiment. Figures 12 to 15The two sides of the tooth block 1120 in the circumferential direction are respectively recessed inward to form a recess 1121, the coil assembly 1200 is embedded in the recess 1121, and the cooling plate 1310 is engaged between two adjacent coil assemblies 1200 so that the stator opposite surface 1312 of the cooling plate 1310 abuts against the yoke plate 1110.

[0100] In the first to fifth embodiments of the stator, the height of the tooth block 1120 is consistent with the thickness of the cooling plate 1310, so that when the cooling plate 1310 is installed on the core winding unit, the cooling plate 1310 and the tooth block 1120 are flush, thereby reflecting the advantage of a small overall axial size.

[0101] like Figure 28 As shown, the stator 1000f of the sixth embodiment includes the cooling structure 1300a of the first embodiment, and the stator 1000f also includes a core winding unit, and the core winding unit includes a stator core 1100 and a coil assembly 1200. The stator core 1100 includes a plurality of circumferentially spaced tooth blocks 1120, and each of the tooth blocks 1120 is sleeved with a coil assembly 1200. The cooling plate 1310 is sleeved on the stator core 1100 in a one-to-one correspondence between the stator sleeve hole 1313 and the tooth block 1120, and the rotor-opposing surface 1311 of the cooling plate 1310 is arranged outward.

[0102] refer to Figure 28 The number of the iron core winding units and the number of the cooling plates 1310 are identical, namely two. The tooth blocks 1120 of the two iron core winding units correspond to each other and are integrally connected to form a whole, so that the two cooling plates 1310 are externally positioned on either side of the two integrally connected iron core winding units. The stator 1000f of the sixth embodiment can be used in a single-stator, dual-rotor circumferential magnetic field motor.

[0103] like Figure 29 As shown, the stator 1000g of the seventh embodiment is different from the sixth embodiment in that it adopts the cold zone structure 1300b of the second embodiment. Similarly, the stator 1000g of the seventh embodiment can be applied to an axial magnetic field motor with a single stator and dual rotors.

[0104] In summary, the cooling plate 1310 is sleeved on the stator core 1100 in a one-to-one correspondence between the stator sleeve hole 1313 and the tooth block 1120, and the rotor-facing surface 1311 of the cooling plate 1310 is arranged outwardly relative to the yoke plate 1110. The cooling plate 1310 can abut the coil assembly 1200 or be engaged between two adjacent coil assemblies 1200, thereby not only improving heat dissipation performance but also preventing the coil from separating from the stator core 1100. In other words, compared to the prior art, the slot wedge structure is omitted, reducing motor components, reducing costs, and effectively improving assembly efficiency. Furthermore, it can also be applied to different types of axial magnetic field motors, thereby improving applicability.

[0105] like Figures 21 to 27 As shown, the present invention further provides an axial magnetic field motor, comprising the stators 1000a-1000f of the above-described embodiment, the axial magnetic field motor further comprising a rotor 2000 and a housing 3000, the stators 1000a-1000f being encapsulated within the housing 3000 with the rotor-opposing surfaces 1311 facing the rotor 2000. Since the axial magnetic field motor employs the stators 1000a-1000f of the above-described embodiment, the beneficial effects of the axial magnetic field motor can be compared with those of the stators 1000a-1000f of the above-described embodiment.

[0106] According to the number of stators 1000a-1000f and rotors 2000, the axial magnetic field motor can be divided into a single-rotor single-stator motor, a single-rotor dual-stator motor, and a dual-rotor single-stator motor. The following three embodiments are described in detail:

[0107] Figures 21 to 24 A structural schematic diagram of the axial magnetic field motor of the first embodiment is shown, which adopts the stators 1000a~1000b of the first and second embodiments, wherein the number of the cooling disk 1310 and the number of the core winding unit of the stators 1000a~1000b are each one, and the number of the rotor 2000 is one, and the number of the stators 1000a~1000b is two. At this time, the rotor 2000 is maintained between the two stators 1000a~1000b with an air gap, so that the axial magnetic field motor forms a single-rotor dual-stator motor.

[0108] The heat of the rotor 2000 is transferred to the cooling disk 1310 through the air gap, and the cooling disk 1310 realizes heat transfer and cooling.

[0109] like Figure 21 and Figure 24As shown, the casing 3000 includes two shells 3001, and the shells 3001 include a bottom plate 3100 and an outer plate 3200 extending along the outer edge of the bottom plate 3100. Each of the shells 3001 corresponds to fixing one of the stators 1000a~1000b. The stators 1000a~1000b are located in the area surrounded by the outer plates 3200 and are fixed to the bottom plate 3100 through the yoke 1110 of the stator core 1100. The two shells 3001 are fixed in relative contact with each other with the outer plates 3200 being placed outside the bottom plate 3100. The yoke 1110 can be fixed to the base plate 3100 via bolts, so that the cooling plate 1310 is positioned outside the housing 3001 relative to the core winding unit. When the two housings 3001 are abutted and fixed relative to each other via the outer plate 3200, a cooling plate 1310 is located between the rotor 2000 and each core winding unit. This allows the two sides of the rotor 2000 to contact different cooling plates 1310, thereby improving heat dissipation performance. The two housings 3001 can be fixed together using bolts or other methods, which are not limited here.

[0110] The outer ring flow channel 13141 extends outward to form adjacent inlet and outlet sections 1316. These inlet and outlet sections 1316 are separated by a partition 13163 to form an adjacent inlet portion 13161 and an outlet portion 13162. The outer plate 3200 is provided with a slot 3201 through which the inlet and outlet sections 1316 pass. The slot 3201 not only allows the inlet and outlet sections 1316 to be guided out, but also serves to pre-secure the cooling plate 1310, ensuring reliable stability after assembly.

[0111] The housing 3000 further includes an inner plate 3300 and a support block 3400. The inner plate 3300 is sleeved inside the stators 1000c to 1000e. The support block 3400 is disposed on the inner wall of the outer plate 3200. The cooling plate 1310 is supported and fixed on the inner plate 3300 and / or the support block 3400. Figure 23 The core winding unit is located between the inner plate 3300 and the outer plate 3200, and the cooling plate 1310 can be abutted against the inner plate 3300 and / or the support block 3400 and locked by bolts. Figure 2 The cooling plate 1310 is provided with a mounting hole 1318 for the bolt to pass through. The mounting hole 1318 is specifically located at positions corresponding to the outer ring flow channel 13141 and the inner ring flow channel 13142, that is, the outer ring flow channel 13141 abuts against the multiple support blocks 3400 arranged at circumferential intervals, and the inner ring flow channel 13142 abuts against the inner plate 3300.

[0112] like Figure 24 As shown, a plurality of the support blocks 3400 are arranged at intervals on the inner wall of the outer plate 3200 . Of course, the plurality of the support blocks 3400 can be connected in sequence to form a continuous annular structure to ensure the stability of the fixing of the cooling plate 1310 .

[0113] Figures 25 to 27 A structural schematic diagram of the axial magnetic field motor of the second embodiment is shown, which adopts the stators 1000c~1000d of the third and fourth embodiments, wherein the number of the cooling plates 1310 and the iron core winding units of the stators 1000c~1000d is two each, and the number of the stators 1000c~1000d is one, and the number of the rotors 2000 is two, and the two iron core winding units are respectively arranged between the two rotors 2000 with the rotor opposing surfaces 1311 facing the rotor 2000, the tooth blocks 1120 of the two iron core winding units correspond to each other one by one, and are integrally connected by the yoke plate 1110 to form a whole, so that the axial magnetic field motor forms a dual-rotor single-stator motor.

[0114] Each rotor 2000 corresponds to one cooling disk 1310 , and the heat of the rotor 2000 is transferred to the corresponding cooling disk 1310 through the air gap, and the cooling disk 1310 realizes heat transfer and cooling.

[0115] The casing 3000 includes an outer plate 3200 and two bottom plates 3100. The two ends of the outer plate 3200 are respectively provided with a snap-on socket 3201. The outer ring flow channel 13141 of the cooling plate 1310 extends outward to form an inlet and outlet section 1316. The two cooling plates 1310 are respectively engaged with the snap-on sockets 3201 at both ends of the outer plate 3200 through the inlet and outlet sections 1316, so that the two integrally connected iron core winding units are fixed between the two cooling plates 1310, and the two ends of the outer plate 3200 are closed by the bottom plate 3100.

[0116] like Figure 25 and Figure 26 As shown, the housing 3000 further includes an inner plate 3300 and a support block 3400. The inner plate 3300 is sleeved within the stators 1000c-1000e. The support block 3400 is disposed on the inner wall of the outer plate 3200. The cooling disk 1310 is supported and fixed on the inner plate 3300 and / or the support block 3400. The support block 3400 has a continuous annular structure, so that the two cooling disks 1310 abut against both sides of the support block 3400 and the inner plate 3300, respectively.

[0117] like Figure 27As shown, the axial magnetic field motor further includes a rotating shaft, which passes through the center of the stators 1000c-1000e and the inner plate 3300 and is rotatably disposed inside the housing 3000. For example, both ends of the rotating shaft are rotatably connected to the bottom plate 3100. The rotor 2000 is fixed to the rotating shaft.

[0118] Figure 27 A structural schematic diagram of the axial magnetic field motor of the third embodiment is shown, which adopts the stator 1000e of the fifth embodiment, wherein the number of the cooling disk 1310 and the number of the iron core winding units of the stator 1000e are two each, and the number of the stator 1000e is one, and the number of the rotors 2000 is two, and the two iron core winding units are respectively arranged between the two rotors 2000 with the rotor opposite surfaces 1311 facing the rotor 2000, and the tooth blocks 1120 of the two iron core winding units correspond to each other one by one, and are integrally connected through the yoke disk 1110 to form a whole, so that the axial magnetic field motor forms a dual-rotor single-stator motor.

[0119] Figure 28 A structural schematic diagram of the axial magnetic field motor of the fourth embodiment is shown, which differs from the second embodiment in that the stator 1000f of the sixth embodiment is adopted, that is, the stator core 1100 does not have a yoke plate 1110, and the tooth blocks 1120 of the two core winding units correspond to each other and are connected as one body, and the two core winding units are respectively arranged between the two rotors 2000 in such a way that the rotor opposite surfaces 1311 face the rotor 2000, so that the axial magnetic field motor forms a dual-rotor single-stator motor.

[0120] In addition, a plurality of spaced-apart clips 3210 are provided on the inner wall of the outer plate so that the tooth blocks 1120 corresponding to each other and connected as one body are engaged between two adjacent clips 3210. Figure 28 and Figure 30 Specifically, the tooth block 1120 passes between two adjacent clamping strips 3210, and the surface of the tooth block 1120 is smooth, so that after the two cooling discs 1310 are sleeved on the tooth block 1120 and engaged with the two ends of the outer plate, the two coil assemblies 1200 sleeved on the tooth block 1120 can be separately arranged on both sides of the clamping strip 3210, and the coil assembly 1200 on each side can be positioned between the cooling disc 1310 and the clamping strip 3210. This not only omits the positioning structure, making the structure more compact and reducing costs, but also improves the reliability and stability of the structure.

[0121] Figure 29The fifth embodiment of the axial magnetic field motor is shown in FIG. 1 , which differs from the fourth embodiment in that the stator 1000g of the seventh embodiment is used. That is, the two cooling plates 1310 are connected by a connecting pipe 1320. Figure 4 and Figure 5 The present invention also provides an assembly method of an axial magnetic field motor, comprising the following steps:

[0122] S100, providing a cooling plate 1310, wherein the cooling plate 1310 includes a rotor-facing surface 1311, a stator-facing surface 1312, and a plurality of stator sleeve holes 1313 penetrating the rotor-facing surface 1311 and the stator-facing surface 1312;

[0123] S200, aligning the stator-facing surface 1312 of the cooling plate 1310 toward the core winding unit and sleeved onto the core winding unit using the stator sleeve hole 1313 to form the stators 1000a-1000f;

[0124] S300 , the rotor 2000 is aligned with the rotor facing surface 1311 of the cooling plate 1310 , and the entire rotor 2000 is encapsulated in the housing 3000 .

[0125] The core winding unit includes a stator core 1100 and a coil assembly 1200. The stator core 1100 includes a yoke 1110 and a plurality of tooth blocks 1120. In step S200, the coil assembly 1200 is sleeved on the tooth block 1120, and the tooth block 1120 is inserted into the stator sleeve hole 1313 of the cooling plate 1310 to fix the coil assembly 1200 between the stator core 1100 and the cooling plate 1310.

[0126] Alternatively, the stator core 1100 includes a plurality of circumferentially spaced tooth blocks, and then in step S200, the coil assembly 1200 is sleeved on the tooth block 1120, and the tooth block 1120 is inserted into the stator sleeve hole 1313 of the cooling plate 1310 to fix the coil assembly 1200 between the stator core 1100 and the cooling plate 1310.

[0127] refer to Figures 9 to 11 The coil assembly 1200 is located between the yoke 1110 and the cooling plate 1310 so that the stator-facing surface 1312 of the cooling plate 1310 abuts against the coil assembly 1200 .

[0128] refer to Figures 12 to 14The two sides of the tooth block 1120 in the circumferential direction are respectively recessed inward to form a recess 1121. The step S200 includes: embedding the coil assembly 1200 in the recess 1121, and the cooling plate 1310 is engaged between two adjacent coil assemblies 1200 so that the stator opposite surface 1312 of the cooling plate 1310 abuts against the yoke plate 1110.

[0129] refer to Figures 15 to 17 , the number of the core winding units and the cooling plates 1310 are both two, and the two core winding units are back to back and are integrally connected through the yoke plate 1110 to form a whole, and the tooth blocks 1120 of the two core winding units correspond one to one, and the step S200 includes: arranging the two cooling plates 1310 on both sides of the two integrally connected core winding units.

[0130] refer to Figure 18 A connecting pipe 1320 is further provided between the two cooling plates 1310 , and the connecting pipe 1320 is inserted into the inside of the iron core winding unit so that the iron core winding unit is built between the two cooling plates 1310 .

[0131] like Figures 21 to 24 As shown, the housing 3000 includes two shells 3001, and the step S300 includes installing a stator 1000a~1000b in each shell 3001, and then relatively connecting the two shells 3001 so that the rotor 2000 is maintained between the two stators 1000a~1000b with an air gap.

[0132] like Figures 25 to 27 As shown, the casing 3000 includes an outer plate 3200 and two bottom plates 3100. The step S300 includes respectively engaging the two cooling plates 1310 of the stator 1000c~1000e at both ends of the outer plate 3200 so that the two integrally connected core winding units are fixed between the two cooling plates 1310, and encapsulating the two bottom plates 3100 at both ends of the outer plate 3200.

[0133] like Figure 28 and Figure 29As shown, when the tooth blocks 1120 of the two core windings correspond one to one and are connected as a whole, a number of spaced-apart clips 3210 are provided on the inner wall of the outer plate, and the method further includes snapping the tooth block 1120 into two adjacent clips 3210, and sleeved the coil assembly 1200 at both ends of the tooth block 1120, and then sleeved the two cooling plates 1310 at both ends of the tooth block 1120, and snapped into the two ends of the outer plate, so that the coil assembly 1200 on each side can be positioned between the cooling plate 1310 and the clip 3210.

[0134] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent application of the present invention cannot be limited by these embodiments alone. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A cooling structure (1300a, 1300b), characterized in that: The cooling plate (1310) includes a rotor opposing surface (1311), a stator opposing surface (1312), and a plurality of stator sleeve holes (1313) penetrating the rotor opposing surface (1311) and the stator opposing surface (1312); a flow channel (1314) is further provided between the rotor opposing surface (1311) and the stator opposing surface (1312); the flow channel (1314) surrounds each of the stator sleeve holes (1313); The flow channel (1314) comprises an outer ring flow channel (13141), an inner ring flow channel (13142), and a plurality of branch flow channels (13143) connected between the outer ring flow channel (13141) and the inner ring flow channel (13142), wherein the stator sleeve hole (1313) is formed between two adjacent branch flow channels (13143); There are two cooling discs (1310), and the two cooling discs (1310) are connected via a connecting pipe (1320) so that the cold zone medium flows back and forth in the two cooling discs (1310); The connecting pipe (1320) is connected to the inner ring flow channel (13142) to form a corresponding inlet (13144) and outlet (13145) on the inner ring flow channel (13142) of the two cooling plates (1310), and is located on the same inner ring flow channel (13142), and adjacent inlets (13144) and outlets (13145) are blocked, and a baffle (1317) for blocking is provided between adjacent inlets (13144) and outlets (13145).

2. The cooling structure (1300a, 1300b) according to claim 1, characterized in that: A plurality of blocking members (1315) are respectively provided in the outer ring flow channel (13141) and the inner ring flow channel (13142), and the blocking members (1315) located in the outer ring flow channel (13141) and the inner ring flow channel (1314) are staggered.

3. The cooling structure (1300a, 1300b) according to claim 1, characterized in that: The cooling structure further comprises a connecting pipe (1320), wherein the connecting pipe (1320) is respectively connected to the stator opposing surfaces (1312) of the two cooling disks (1310), so that the rotor opposing surfaces (1311) of the two cooling disks (1310) are externally located, and the stator sleeve holes (1313) of the two cooling disks (1310) correspond one to one.

4. The cooling structure (1300a, 1300b) according to claim 3, characterized in that: A plurality of blocking members (1315) are respectively provided in the outer ring flow channel (13141) and the inner ring flow channel (13142), and the blocking members (1315) located in the outer ring flow channel (13141) and the inner ring flow channel (13142) are arranged relative to each other to separate the flow channel (1314) into a plurality of circumferentially arranged chambers (13140). The chambers (13140) located in the two cooling disks (1310) are staggered in the circumferential direction and are connected through the connecting pipe (1320) so that the cooling medium passes through the chambers (13140) of the two cooling disks (1310) in turn.

5. A stator (1000a~1000g), characterized in that: The invention comprises a cooling structure (1300a, 1300b) according to any one of claims 1 to 4, wherein the stator (1000a-1000g) further comprises an iron core winding unit, wherein the iron core winding unit comprises a stator iron core (1100) and a coil assembly (1200), wherein the stator iron core (1100) comprises a plurality of tooth blocks (1120) arranged at intervals in a circumferential direction, wherein at least one coil assembly (1200) is sleeved on the outer side of each tooth block (1120), and the cooling plate (1310) is sleeved on the stator iron core (1100) in a one-to-one correspondence between the stator sleeve hole (1313) and the tooth block (1120), and the rotor-opposing surface (1311) of the cooling plate (1310) is arranged outward.

6. The stator (1000a-1000g) according to claim 5, characterized in that: The stator core (1100) further includes a yoke (1110), and the tooth block (1120) is arranged on the yoke (1110).

7. The stator (1000a-1000g) according to claim 6, characterized in that: The coil assembly (1200) is located between the yoke (1110) and the cooling disk (1310) so that the stator-facing surface (1312) of the cooling disk (1310) abuts against the coil assembly (1200).

8. The stator (1000a-1000g) according to claim 6, characterized in that: Both sides of the tooth block (1120) in the circumferential direction are respectively recessed inward to form a recess (1121), the coil assembly (1200) is embedded in the recess (1121), and the cooling plate (1310) is engaged between two adjacent coil assemblies (1200) so that the stator-facing surface (1312) of the cooling plate (1310) abuts against the yoke plate (1110).

9. An axial magnetic field motor, characterized in that: The axial magnetic field motor comprises a stator (1000a-1000g) according to any one of claims 5 to 8, and further comprises a rotor (2000) and a casing (3000), wherein the stator (1000a-1000g) is packaged inside the casing (3000) in such a manner that the rotor opposite surface (1311) faces the rotor (2000).

10. The axial magnetic field motor according to claim 9, characterized in that The number of the cooling disk (1310) and the number of the iron core winding unit of the stator (1000a~1000b) are each one, and the number of the rotor (2000) is one. When the number of the stators (1000a~1000b) is two, the rotor (2000) is maintained with an air gap between the two stators (1000a~1000b), so that the axial magnetic field motor forms a single-rotor dual-stator motor.

11. The axial magnetic field motor according to claim 10, characterized in that The housing (3000) comprises two shells (3001), each of the shells (3001) comprising a bottom plate (3100) and an outer plate (3200) extending along the outer edge of the bottom plate (3100), each of the shells (3001) correspondingly fixing a stator (1000a-1000b), the stators (1000a-1000b) being located within an area enclosed by the outer plates (3200) and being fixed to the bottom plate (3100) via a yoke (1110) of the stator core (1100), and the two shells (3001) being fixed relative to each other with the outer plates (3200) being placed outside the bottom plate (3100).

12. The axial flux motor according to claim 11, wherein: The outer ring flow channel (13141) extends outward to form adjacent inlet and outlet sections (1316), and the inlet and outlet sections (1316) are separated by a partition (13163) to form adjacent inlet portions (13161) and outlet portions (13162). The outer plate (3200) is provided with a slot (3201) through which the inlet and outlet sections (1316) pass.

13. The axial magnetic field motor according to claim 9, characterized in that When the number of the cooling disk (1310) and the iron core winding unit of the stator (1000c~1000g) is two, the number of the stator (1000c~1000g) is one, and the number of the rotors (2000) is two, the two iron core winding units are respectively arranged between the two rotors (2000) in a manner such that the rotor opposite surfaces (1311) face the rotors (2000), and the tooth blocks (1120) of the two iron core winding units correspond one to one and are connected as a whole, or are connected as a whole through the yoke disk (1110) of the stator iron core (1100), so that the axial magnetic field motor forms a dual-rotor single-stator motor.

14. The axial magnetic field motor according to claim 13, characterized in that The housing (3000) comprises an outer plate (3200) and two bottom plates (3100), and the two cooling plates (1310) are respectively engaged with the two ends of the outer plate (3200) so that the two integrally connected iron core winding units are fixed between the two cooling plates (1310), and the two ends of the outer plate (3200) are closed by the bottom plate (3100).

15. The axial flux motor according to claim 14, wherein: When the tooth blocks (1120) of the two core winding units correspond one to one and are connected as one, a plurality of spaced-apart clamping strips (3210) are provided on the inner wall of the outer plate so that the tooth blocks (1120) that correspond one to one and are connected as one are clamped between two adjacent clamping strips (3210).

16. The axial flux motor according to claim 12, wherein: The inlet and outlet sections (1316) of one cooling plate (1310) are used for leading out the cooling medium, and the inlet and outlet sections (1316) of the other cooling plate (1310) are used for introducing the cooling medium.

17. The axial flux motor according to claim 11 or 14, characterized in that: The housing (3000) further comprises an inner plate (3300) and a support block (3400), wherein the inner plate (3300) is sleeved inside the stator (1000c-1000e), the support block (3400) is arranged on the inner wall of the outer plate (3200), and the cooling plate (1310) is supported and fixed on the inner plate (3300) and / or the support block (3400).

18. A method for assembling an axial magnetic field motor, characterized in that: The following steps are involved: S100, providing a cooling plate (1310), the cooling plate (1310) comprising a rotor opposing surface (1311), a stator opposing surface (1312), and a plurality of stator sleeve holes (1313) penetrating the rotor opposing surface (1311) and the stator opposing surface (1312); S200, aligning the stator-opposing surface (1312) of the cooling plate (1310) toward the iron core winding unit, and sleeved on the iron core winding unit using the stator sleeve hole (1313) to form a stator (1000a-1000g); S300, placing the rotor (2000) opposite to the rotor facing surface (1311) of the cooling disk (1310), and encapsulating the entire rotor in a housing (3000); There are two cooling discs (1310), and the two cooling discs (1310) are connected via a connecting pipe (1320) so that the cold zone medium flows back and forth in the two cooling discs (1310). Step S200 includes: The two cooling plates (1310) are sleeved on the iron core winding unit, and the connecting pipe (1320) is arranged radially inward of the iron core winding unit; The cooling plate (1310) comprises a flow channel (1314), the flow channel (1314) comprising an outer ring flow channel (13141), an inner ring flow channel (13142), and a plurality of branch flow channels (13143) connected between the outer ring flow channel (13141) and the inner ring flow channel (13142), wherein the stator sleeve hole (1313) is formed between two adjacent branch flow channels (13143); The connecting pipe (1320) is connected to the inner ring flow channel (13142) to form a corresponding inlet (13144) and outlet (13145) on the inner ring flow channel (13142) of the two cooling plates (1310), and is located on the same inner ring flow channel (13142), and adjacent inlets (13144) and outlets (13145) are blocked, and a baffle (1317) for blocking is provided between adjacent inlets (13144) and outlets (13145).

19. The method for assembling an axial magnetic field motor according to claim 18, wherein: The core winding unit comprises a stator core (1100) and a coil assembly (1200), wherein the stator core (1100) comprises a plurality of tooth blocks (1120). In step S200, the coil The assembly (1200) is sleeved on the tooth block (1120), and the tooth block (1120) is inserted into the stator sleeve hole (1313) of the cooling disk (1310) to limit the coil assembly (1200) between the stator core (1100) and the cooling disk (1310).

20. The method for assembling an axial magnetic field motor according to claim 18, wherein: The number of the core winding units and the number of the cooling plates (1310) are both two, and the two core winding units are back to back and connected as a whole to form a whole. The step S200 includes: arranging the two cooling plates (1310) on both sides of the two integrally connected core winding units.

21. The method for assembling an axial magnetic field motor according to claim 19, wherein: The housing (3000) includes two shells (3001), and in step S300, a stator (1000a-1000b) is installed in each shell (3001), and then the two shells (3001) are relatively connected to each other so that the rotor (2000) is maintained between the two stators (1000a-1000b) with an air gap.

22. The method for assembling an axial magnetic field motor according to claim 20, wherein: The housing (3000) includes an outer plate (3200) and two bottom plates (3100), and the step S300 includes respectively engaging the two cooling plates (1310) of the stator (1000c~1000e) at the two ends of the outer plate (3200) so that the two integrally connected iron core winding units are fixed between the two cooling plates (1310), and encapsulating the two bottom plates (3100) at the two ends of the outer plate (3200).

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