WO2024036658A1

WO2024036658A1 - Cooling structure and manufacturing method therefor, and axial magnetic field motor

Info

Publication number: WO2024036658A1
Application number: PCT/CN2022/114709
Authority: WO
Inventors: 崔豪杰; 陈翾; 于河波; 何俊明; 梁雨生; 王治会
Original assignee: 浙江盘毂动力科技有限公司
Priority date: 2022-08-16
Filing date: 2022-08-25
Publication date: 2024-02-22
Also published as: CN115296499A

Abstract

The present invention provides a cooling structure and a manufacturing method therefor, and an axial magnetic field motor. The cooling structure comprises a housing and a flow channel formed inside the housing. The housing is made of a thermally conductive material combined with a strength material, and a heat exchange surface is formed on the outer surface of the housing where the thermally conductive material is located and used for being in contact with a member to be cooled. Thus, the cooling structure meets the requirements of strength and thermal conductivity, so that the stability and reliability of the cooling structure are ensured. A cooling medium is introduced into the flow channel inside the housing to effectively cool the member to be cooled.

Description

Cooling structure and manufacturing method thereof and axial magnetic field motor

Technical field

The present invention relates to the field of cooling, and in particular to a non-metallic cooling structure that can be applied to an axial magnetic field motor, a manufacturing method thereof and an axial magnetic field motor.

Background technique

A motor refers to an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque and serve as the power source for electrical appliances or various machinery. The types of motors can be divided into radial magnetic field motors and axial magnetic field motors. Axial magnetic field motors are also called disc motors. They have the characteristics of small size, light weight, short axial size and high power density. They can be used in most thin It is used in installation situations, so it is widely used.

The motor includes a casing, a stator and a rotor arranged inside the casing. The stator is an electric stationary part and is mainly composed of an iron core and a coil wound around the iron core. The coil is made of enameled wire. The function of the stator is to generate a rotating magnetic field, so that the rotor is cut by magnetic lines of force in the magnetic field to generate current. During the operation of the motor, a lot of heat is generated internally, most of which is generated by the coil, causing the coil temperature to rise. If the temperature of the coil is too high, the insulation layer on the surface of the coil will be destroyed, and a short circuit will occur between the enameled wires, causing serious consequences of the motor being burned. In addition, the permanent magnets on the rotor will also generate some heat. If the temperature of the permanent magnet is too high, demagnetization will occur, and then Reduce motor performance, so the motor needs to be equipped with a cooling structure to cool the heating element of the motor.

The cooling structure is used for cooling medium to pass through to exchange heat with the heating element of the motor. In order to improve the cooling capacity of heating elements, most cooling structures currently use metal materials with good thermal conductivity to achieve better cooling effects. However, in some special occasions, the cooling structure of metal materials is no longer suitable, such as inside electromagnetic equipment. When metal materials are placed in an alternating magnetic field, eddy currents will be generated, which will increase heat production and greatly reduce the efficiency of the equipment. Although the cooling structure of non-metallic materials can be applied inside electromagnetic equipment, the non-metallic cooling structures commonly used on the market cannot meet the requirements of high thermal conductivity and high mechanical strength at the same time.

Contents of the invention

The purpose of the present invention is to provide a multi-material composite non-metallic cooling structure and a manufacturing method and an axial magnetic field motor in order to overcome the above-mentioned shortcomings of the prior art. The cooling structure can simultaneously ensure efficient cooling performance and better mechanical strength. The object of the present invention can be achieved through the following technical solutions:

According to one object of the present invention, the present invention provides a cooling structure. The cooling structure includes a shell and a flow channel formed inside the shell. The shell is made of a combination of thermally conductive material and strength material. And a heat exchange surface is formed on the outer surface of the shell where the thermal conductive material is located for contacting the parts to be cooled.

As a preferred embodiment, the housing is divided into at least one thermal conductive member composed of the thermal conductive material, and at least one strength member composed of the strength material, and the thermal conductive member and the strength member are spliced to form the case.

As a preferred embodiment, the housing is made of a mixture of the thermally conductive material and the strength material and is injection molded.

As a preferred embodiment, it also includes at least one reinforcing rib, which is disposed on the outer surface and/or inner surface of the housing where the thermally conductive material is located;

And/or, it also includes at least one heat exchange element composed of the thermal conductive material, the outer surface and/or the inner surface of the housing where the thermal conductive material is located are raised to form the heat exchange element, and is located outside the housing. The surface heat exchange element can be embedded inside the element to be cooled.

As a preferred embodiment, the housing of the cooling mechanism includes at least one stator opposing plate and at least one rotor opposing plate, and several stator sleeve holes penetrating the rotor opposing plate and the stator opposing plate, and the flow channel Formed between the rotor opposing plate and the stator opposing plate and surrounding each stator sleeve hole, at least part of the stator opposing plate and/or the rotor opposing plate is composed of the thermally conductive material .

As a preferred embodiment, the stator opposing plate includes an outer ring part, an inner ring part and a plurality of branches made of the thermally conductive material, and the branch parts are connected between the outer ring part and the inner ring part. space, and several of the branches are arranged at circumferential intervals to form the stator sleeve holes between two adjacent branches.

According to another object of the present invention, the present invention also provides an axial magnetic field motor. The axial magnetic field motor includes at least one cooling structure of the above embodiment. The axial magnetic field motor further includes at least a stator and at least one stator. The rotor, the stator and the rotor are arranged at intervals along the axis to create an air gap between the stator and the rotor, and the cooling structure is sleeved on the stator.

According to another object of the present invention, the present invention also provides a manufacturing method of a cooling structure. The cooling structure includes a shell and a flow channel formed inside the shell. The manufacturing method includes the following steps:

The thermally conductive material and the strength material are combined to prepare the shell, and a heat exchange surface is formed on the outer surface of the shell where the thermally conductive material is located for contacting the parts to be cooled.

As a preferred embodiment, the method includes:

Provide at least one thermally conductive member composed of the thermally conductive material, and at least one strength member composed of the strength material;

The thermal conductive member and the strength member are injection molded together through a mold to produce the housing.

As a preferred embodiment, the shell further includes a plurality of reinforcing ribs, the reinforcing ribs are arranged on the inner surface and/or the outer surface of the thermal conductive member, and the method includes:

Preparing the strength member with the reinforcement ribs;

The side of the strength member with the reinforcing ribs is injection molded and bonded to the heat conducting member, so that the reinforcing ribs are disposed on the inner surface and/or the outer surface of the heat conducting member.

As a preferred embodiment, the method includes:

The thermally conductive material and the strength material are mixed, and the mixed thermally conductive material and the strength material are integrally injection molded through a mold to prepare the shell.

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

The shell of the cooling structure is made of a combination of thermal conductive materials and strength materials, so that the cooling structure meets the requirements of strength and thermal conductivity at the same time to ensure the stability and reliability of the cooling structure, and through The flow channel inside the housing introduces cooling medium to effectively cool the parts to be cooled. Moreover, the outer surface of the shell where the thermal conductive material is located forms a heat exchange surface, and the heat exchange surface directly contacts the parts to be cooled, so that the parts to be cooled and the cooling medium can effectively exchange heat, ensuring the strength of the cooling structure while improving the heat exchanger. thermal performance, thereby achieving efficient cooling. In addition, the thermal conductive material and strength material of the cooling structure can be non-metallic or metallic materials to increase the range of use. Furthermore, the housing may be spliced together by the rigid heat conductive member and the strength member, or may be injection molded by mixing the heat conduction material and the strength material.

The present invention will be further described below in conjunction with the accompanying drawings and examples.

Description of drawings

Figure 1 is a schematic structural diagram of a first embodiment of the cooling structure of the present invention;

Figure 2 is a schematic structural diagram of a second embodiment of the cooling structure of the present invention;

Figure 3 is a schematic structural diagram of a third embodiment of the cooling structure of the present invention;

Figure 4 is a schematic structural diagram of a fourth embodiment of the cooling structure of the present invention;

Figure 5 is a schematic structural diagram of the fifth embodiment of the cooling structure of the present invention;

Figure 6 is an internal schematic diagram of the cooling structure of Figure 5;

Figure 7 is a schematic structural diagram of a sixth embodiment of the cooling structure of the present invention;

Figure 8 is a schematic structural diagram of a seventh embodiment of the cooling structure according to the present invention;

Figure 9 is a side view of the cooling structure of Figure 8;

Figure 10 is a cross-sectional view along the A-A direction in Figure 8;

Figure 11 is a cross-sectional view along the B-B direction in Figure 8;

Figure 12 is a schematic diagram of the flow channel of the cooling structure of Figure 8;

Figure 13 is a schematic structural diagram of an embodiment of the axial magnetic field motor according to the present invention;

Figure 14 is a schematic structural diagram of the stator in the axial magnetic field motor of the present invention in Figure 13;

Figure 15 is a schematic structural diagram of the stator core in the axial magnetic field motor of Figure 13;

Figure 16 is a schematic structural diagram of the coil assembly in the axial magnetic field motor of Figure 13;

Figure 17 is a schematic diagram of the combination of the cooling structure and the housing in the axial magnetic field motor of Figure 13;

Figure 18 is a schematic diagram of the combination of the stator and the housing in the axial magnetic field motor of Figure 13;

Figure 19 is a schematic structural diagram of the housing in the axial magnetic field motor of Figure 13;

Figure 20 is a schematic structural diagram of another embodiment of the stator according to the present invention;

Figure 21 is a schematic structural diagram of the stator core in the stator of Figure 20;

Figure 22 is a schematic diagram of the combination of the stator and cooling structure of Figure 20;

Figure 23 is a schematic structural diagram of another embodiment of the axial magnetic field motor according to the present invention;

Figure 24 is a schematic structural diagram of the stator in the axial magnetic field motor of Figure 23;

Figure 25 is a schematic structural diagram of the stator core in the axial magnetic field motor of Figure 23;

Figure 26 is a schematic structural diagram of the casing of the axial magnetic field motor of Figure 23;

Figure 27 is a schematic diagram of the combination of the casing and the cooling structure in the axial magnetic field motor of Figure 23;

Figure 28 is a schematic structural diagram of another embodiment of the stator core according to the present invention;

Figure 29 is a schematic diagram of the combination of the stator core and cooling structure of Figure 28;

Figure 30 is a schematic structural diagram of another embodiment of the axial magnetic field motor according to the present invention;

Figure 31 is a schematic diagram of the combination of the stator and cooling structure in the axial magnetic field motor of Figure 30;

Figure 32 is a schematic structural diagram of the casing of the axial magnetic field motor in Figure 30;

Figure 33 is a schematic structural diagram of another embodiment of the stator core according to the present invention.

Detailed ways

The following description is provided to disclose the invention to enable those skilled in the art to practice the invention. The preferred embodiments in the following description are only examples, and other obvious modifications may occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the invention.

As shown in FIGS. 1 to 12 , the cooling structures 1300a to 1300g include a housing 1330 and a flow channel 1314 formed inside the housing 1330 . The housing 1330 is made of thermal conductive materials. The thermally conductive material is combined with a strong material, and a heat exchange surface is formed on the outer surface of the housing where the thermally conductive material is located for contacting the parts to be cooled.

The shell 1330 of the cooling structures 1300a ~ 1300g is made of a combination of thermal conductive materials and strength materials, so that the cooling structures 1300a ~ 1300g meet the requirements of strength and thermal conductivity at the same time to ensure that the cooling structures 1300a ~ 1300g The stability and reliability of the cooling medium are introduced into the flow channel 1314 inside the housing 1330 to effectively cool the part to be cooled, where the cooling medium includes cooling liquid or cooling gas. Moreover, the outer surface of the shell where the thermal conductive material is located forms a heat exchange surface, and the heat exchange surface directly contacts the parts to be cooled, so that the parts to be cooled and the cooling medium can effectively exchange heat, while ensuring the strength of the cooling structures 1300a to 1300g. , improve heat exchange performance, thereby achieving efficient cooling. In addition, the thermal conductive material can be made of metal oxide or ceramics, and the strength material can be made of polyphenylene sulfide (PPS), fluoropolymer processing aid (PPA) or polyether ether ketone (PEEK). , to obtain a non-metallic cooling structure that can be applied in alternating magnetic fields. Of course, it does not rule out the use of metallic thermal conductive materials and strength materials to obtain a metallic cooling structure.

The cooling structure can have various shapes and splicing methods. The following is a detailed introduction through eight embodiments:

First embodiment

As shown in Figure 1, in the cooling structure 1300a of the first embodiment, its housing 1330 is divided into at least one thermal conductive member 13301 composed of the thermal conductive material, and at least one strength member 13302 composed of the strength material. The thermal conductive member 13301 and the strength member 13302 are spliced to form the housing 1330.

Specifically, the number of the heat conducting member 13301 and the strength member 13302 is one. The heat conducting member 13301 is in a straight shape, and the strength member 13302 is in an n shape. The two are spliced to form the housing with a square cross section. 1330. In addition, the inner surfaces of the heat conducting member 13301 and the strength member 13302 form the flow channel 1314, and the outer surface of the heat conducting member 13301 forms a heat exchange surface to contact the component to be cooled.

The splicing between the thermal conductive member 13301 and the strength member 13302 may be plugged, sleeved, clamped or threaded.

It should be noted that although the strength member 13302 plays a role in lifting the cold zone structure 1300a, when the cooling structure 1300a is arranged inside the part to be cooled, the strength member 13302 can also achieve heat exchange. .

Second embodiment

As shown in FIG. 2 , the cooling structure 1300b of the second embodiment is different from the cooling structure of the first embodiment in that both the heat conduction member 13301 and the strength member 13302 are in a straight shape, and the heat conduction member 13302 is in a straight shape. The number of the component 13301 and the strength component 13302 is two each, the two thermal conductive components 13301 are disposed oppositely, the two strength components 13302 are disposed oppositely, and the thermal conductive component 13301 and the strength component 13302 are adjacent to each other. are spliced together to form the housing 1330 with a square cross-section.

Since the number of the heat conductive members 13301 is two, the cooling structure 1300b of the second embodiment has two heat exchange surfaces, that is, two opposite heat conductive members 13301, the outer surfaces of which respectively form the heat exchange surfaces. It can be seen that by increasing the number of the heat conductive parts 13301 and setting the corresponding installation positions of the heat conductive parts 13301, the parts to be cooled can be installed at different positions on the cooling structure, thereby increasing the use area.

Third embodiment

As shown in Figure 3, the cooling structure 1300c of the third embodiment is different from the cooling structure of the first embodiment in that the cooling structure 1300c also includes at least one heat exchange member 1350 composed of the thermal conductive material. The outer surface and/or the inner surface of the casing where the thermal conductive material is located is raised to form the heat exchange member 1350, and the heat exchange member 1350 located on the outer surface of the casing can be embedded inside the member to be cooled.

Specifically, the heat-conducting member 13301 composed of the heat-conducting material has protrusions on its inner/outer surface to form the heat-exchanging member 1350 to improve the heat-exchanging capability. Moreover, the heat exchange member 1350 located on the outer surface of the heat conductive member 13001 can be embedded inside the component to be cooled to increase the heat exchange area between the two and further improve the cooling effect of the component to be cooled.

The shape and number of the heat exchange members 1350 can be set according to actual needs. For example, the number of heat exchange members 1350 located on the outer surface of the heat conduction member 13001 is one, and it is located in the middle of the heat exchange member 1350, and Embed in the gaps of the parts to be cooled.

Fourth embodiment

As shown in Figure 4, the cooling structure 1300d of the fourth embodiment is different from the cooling structure of the first embodiment in that the cooling structure 1300d also includes at least one reinforcing rib 1340, and the reinforcing rib 1340 is provided at The outer surface and/or inner surface of the housing where the thermally conductive material is located. By providing the reinforcing ribs 1340, the cooling structure is prevented from deforming, thereby improving the strength of the cooling structure.

Specifically, the thermal conductive member 13301 composed of thermal conductive material has reinforcing ribs 1340 provided on its inner/outer surface. The reinforcing rib 1340 and the strength member 13302 can be made of the same material, and the two can be integrally formed, and then spliced by the strength member 13302 and the heat conductive member 13301, so that the reinforcing rib 1340 is disposed on the On the inner/outer surface of the thermal conductor 13301. For example, the strength member 13302 is n-shaped and includes a bottom plate and side plates extending upward along both sides of the bottom plate. A number of the reinforcing ribs 1340 are connected between the two side plates. 1340 are arranged at intervals along the length direction of the bottom plate, and are close to the side plates and away from the upper end of the bottom plate, so that after the heat conductive member 13301 is inserted into the upper ends of the two side plates, the reinforcing ribs 1340 is located on the inner surface of the thermal conductive member 13301. Of course, the reinforcing ribs 1340 can be divided into upper and lower sides, and the heat conductive member 13301 passes between the reinforcing ribs 1340 on the upper and lower sides, so that the inner/outer surfaces of the heat conductive member 13301 are provided with reinforcing ribs 1340.

Fifth embodiment

As shown in FIG. 5 , the cooling structure 1300e of the fifth embodiment is different from the cooling structure of the first embodiment in that the housing 1330 of the cooling mechanism 1300e includes at least a stator opposing plate 1332 and at least one rotor opposing plate 1331 , and several stator sleeve holes 1313 penetrating the rotor opposing plate 1331 and the stator opposing plate 1332, the flow channel 1314 is formed between the rotor opposing plate 1331 and the stator opposing plate 1332, and surrounds Around each stator sleeve hole 1313, at least part of the stator opposing plate 1332 and/or the rotor opposing plate 1331 is composed of the thermally conductive material.

The parts to be cooled may be the stators 1000a to 1000e and the rotor 2000 of the axial magnetic field motor. As shown in FIGS. 13 to 33 , the stators 1000a to 1000e include stator cores 1100a to 1100e. The stator cores 1100a to 1100e include a plurality of tooth blocks 1120 arranged at circumferential intervals, and an air gap is maintained between each tooth block 1120 and the rotor 2000 . The cooling structure 1300e is sleeved on the stator core 1100 through the stator sleeve hole 1312 and the tooth block 1120 in a one-to-one correspondence, and the rotor relative plate 1331 of the housing 1330 is close to and toward the stator core 1100 . The rotor 2000 is arranged with the stator opposing plate 1332 facing away from the rotor 2000. At this time, the flow channel 1314 formed between the rotor opposing plate 1331 and the stator opposing plate 1332 surrounds each location. around the tooth block 1120 to effectively cool the stator cores 1100a to 1100e, and the rotor relative plate 1331 is close to and toward the rotor 2000, so that the cooling structure 1300e cools the stators 1000a to 1000e At the same time, the rotor 2000 can also be cooled, shortening the heat transfer paths between the rotor 2000 and the stators 1000a-1000e respectively and the cooling structure 1300e, thereby effectively improving the heat dissipation effect to ensure the reliability of the motor. run. Moreover, by omitting the installation of water channels on the casing, the structure can be simplified and the processing difficulty and cost can be reduced.

Specifically, the number of the stator opposing plate 1332 and the rotor opposing plate 1331 is one, and the distance between them determines the thickness of the cooling structure 1300e. Refer to Figure 5, the cooling structure 1300e of the fifth embodiment. The shape is roughly flat disk, which can ensure the advantage of small axial size of the axial magnetic field motor.

Continuing to refer to Figure 5, the stator opposing plate 1332 includes an outer ring portion 13321, an inner ring portion 13322 and a plurality of branch portions 13323 made of the thermally conductive material. The branch portions 13323 are connected to the outer ring portion 13321 and the between the inner ring portions 13322, and a plurality of the branch portions 13323 are arranged at circumferential intervals to form the stator sleeve holes 1313 between the two adjacent branch portions 13323. Referring to Figures 5 and 13, the branch portion 13323 can be in contact with the yoke plate 1110 of the stator cores 1100a-1100e, or with the coil assembly 1200 sleeved on the tooth block 1120. At this time, it can only be The branch part 13323 uses a heat conductive member 13301, and the outer ring part 13321 and the inner ring part 13322 use a strength member 13302 to exchange heat with the yoke plate 1110 and the coil assembly 1200. Of course, the outer ring portion 13321 and the inner ring portion 13322 can partially use the heat conductive member 13301, and can be selected according to actual needs.

Referring to Figure 6, the flow channel 1314 includes an outer ring flow channel 13141, an inner ring flow channel 13142, and several branch flow channels 13143 connected between the outer ring flow channel 13141 and the inner ring flow channel 13142, adjacent to each other. The stator sleeve hole 1313 is formed between the two branch flow channels 13143.

Specifically, the inner annular flow channel 13142 and the outer annular flow channel 13141 are arranged from inside to outside, and a plurality of the branch flow channels 13143 are arranged at circumferential intervals, so that two adjacent branch flow channels 13143 The stator sleeve hole 1313 is formed between them. When the tooth block of the stator core is inserted into the stator sleeve hole 1313, the inner ring flow channel 13142 and the inner ring flow channel 13142 are correspondingly arranged on both radial sides of the tooth block. The outer ring flow channel 13141, and the circumferential sides of the tooth block respectively correspond to the branch flow channels 13143, 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 holes 1313 and the tooth blocks are adapted to each other, for example, both are sector-shaped, see FIG. 6 .

Continuing to refer to FIG. 6 , several barriers 1315 are respectively provided in the outer ring flow channel 13141 and the inner ring flow channel 13142 , and the barriers located in the outer ring flow channel 13141 and the inner ring flow channel 1314 Pieces 1315 are staggered. In this way, the cooling medium can flow back and forth between the outer ring flow channel 13141 and the inner ring flow channel 1314 through the branch flow channel 13143, thereby reducing the flow resistance to a certain extent and thereby improving the heat dissipation effect.

The barrier 1315 located in the outer ring flow channel 13141 is located between the two adjacent branch flow channels 13143, which can block the passage of cooling medium and allow the cooling medium to enter along the branch flow channels 13143. The inner ring flow channel 13142 is blocked by the barrier member 1315 in the inner ring flow channel 13142, and enters the outer ring flow channel 13141 through another branch flow channel 13143, and circulates in this way. The cooling medium is sequentially passed through the flow channel 1314 in the circumferential direction to realize the flow of the cooling medium.

Continuing to refer to FIG. 6 , the outer annular flow channel 13141 extends outward to form adjacent inlet and outlet sections 1316 , and the inlet and outlet sections 1316 are separated by partitions 13163 to form adjacent inlet portions 13161 and outlet portions 13162 . The inlet part 13161 and the outlet part 13162 are blocked by the partition 13163, so that the cooling medium introduced from the inlet part 13161 can only pass through the flow channel 1314 counterclockwise, and then through the outlet part 13162 Extracting, since the inlet part 13161 and the outlet part 13162 are adjacent and concentrated, the cooling contact area of the flow channel 1314 is increased and the cooling performance is improved.

The cooling structure 1300e of the fifth embodiment can be applied to axial magnetic field motors with a single rotor and a single stator, or a single rotor and a double stator.

Sixth embodiment

As shown in Figure 7, the cooling structure 1300f of the sixth embodiment is different from the cooling structure of the fifth embodiment in that the branch portion 13323 of the stator opposite plate 1332 protrudes outward to form a heat exchanger 1350. When the branch portion When 13323 is in contact with the coil assembly 1200, the heat exchange member 1350 can be embedded between two adjacent coil assemblies 1200 to increase the heat exchange area to further improve the heat exchange capacity. Refer to Figure 13 .

Seventh embodiment

As shown in Figures 8 to 12, the cooling structure 1300g of the seventh embodiment is different from the cooling structure of the fifth embodiment in that the number of the stator opposing plates 1332 and the rotor opposing plates 1331 is two each. Each stator opposing plate 1332 and one rotor opposing plate 1331 form a cooling plate 1310. It can be seen that the cooling structure 1300g of the seventh embodiment has two cooling plates 1310, and the cooling structure 1300g also has a cooling plate connecting the two cooling plates 1310. The stator opposing plates 1332 of the cooling plates 1310 are arranged so that the rotor opposing plates 1311 of the two cooling plates 1310 are external, and the stator sleeve holes 1313 of the two cooling plates 1310 correspond one to one.

The cooling structure 1300g of the seventh embodiment can be applied to an axial magnetic field motor with dual rotors and a single stator, in which the stator can be sleeved outside the connecting pipe 1320 and built between the two cooling plates 1310. At this time, The axial sides of the stator respectively correspond to the stator opposing plates 1332 of the cooling plates 1310 on both sides, and the two rotors correspond to the rotor opposing plates 1331 of each cooling plate 1310 .

The cooling structure 1300g of the seventh embodiment can be the same as that of the fifth embodiment. Each cooling plate 1310 carries out independent cooling medium introduction and extraction. Of course, the cooling medium passes through the connecting pipe 1320 between the two cooling plates. The cooling plates 1310 flow back and forth to increase the contact area between the cooling medium and the stator and improve the cooling performance. Referring to FIGS. 10 to 12 , a plurality of blocking members 1315 are respectively provided in the outer ring flow channel 13141 and the inner ring flow channel 13142 , and are located in all the blocking members 1315 in the outer ring flow channel 13141 and the inner ring flow channel 13142 . The barriers 1315 are arranged oppositely to divide the flow channel 1314 into several circumferentially arranged chambers 13140. The chambers 13140 located in the two cooling plates 1310 are staggered in the circumferential direction, and are connected through the connection The tubes 1320 are connected to allow the cooling medium to pass back and forth through the chambers 13140 of the two cooling plates 1310 in sequence.

Specifically, the connecting pipe 1320 is circumferentially divided into several tube portions 1322. Referring to Figure 12, since the chambers 13140 located in the two cooling plates 1310 are arranged circumferentially staggered, one cooling plate The chamber 13140 of 1310 is respectively connected to the two tube parts 1322 to correspondingly connect the two chambers 13140 of the other cooling plate 1340, so that the cooling medium passes through the tube part 1322 and flows through the two cooling plates 1310 in turn. The heat flows back and forth in the chamber 13140, and since the stator is sleeved outside the connecting tube 1320, heat can also be transferred inside the stator through the tube portion 1322.

As shown in FIGS. 10 and 11 , the connecting pipe 1320 is connected to the inner ring flow channel 13142 to form corresponding inlets 13144 and exhaust pipes on the inner ring flow channels 13142 of the two cooling plates 1310 . The port 13145 is located on the same inner ring flow channel 13142, and is blocked between the adjacent inlet 13144 and the outlet 13145.

Further, the inlet 13144 and the outlet 13145 respectively correspond to the two ends of the tube portion 1322. Refer to Figure 12, that is, the cooling medium located in the outer ring flow channel 13141 flows to the inner flow channel through the branch flow channel 13143. After the circulation channel 13142, it enters the tube portion 1322 through the outlet 13145 thereon, and then enters the chamber 13140 of the other cooling plate 1310, specifically from the inner circulation channel 13142 of the chamber 13140. enters the inlet 13144, and then flows to the outer ring flow channel 13141 through the branch flow channel 13143. In this cycle, the cooling medium passes through the tube portion 1322 and flows sequentially into the chambers 13140 of the two cooling plates 1310. Flow back and forth.

Furthermore, the inlet 13144 and the outlet 13145 located on the same inner ring flow channel 13142 are arranged at intervals, and a baffle 1317 for blocking is provided between the adjacent inlet 13144 and the outlet 13145. Each of the chambers 13140 corresponds to an inlet 13144 and an outlet 13145 respectively, and the inlet 13144 and the outlet 13145 respectively correspond to the two chambers 13140 of the other cooling plate 1310 . A baffle 1317 is provided between the inlet 13144 and the outlet 13145 to prevent the cooling medium from directly passing through the inlet 13144 and the outlet 13145 without passing through the outer ring flow channel 13141 and the branch flow channel 13143. flow, which affects cooling performance. Specifically, the cooling medium introduced from the inlet 13144 is blocked by the baffle 1317 and can only flow through the branch flow channel 13143 to the outer ring flow channel 13141 and then through the other branch flow channel 13143 flows to the outlet 13145, 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.

As shown in Figures 8 to 12, the outer ring flow channel 13141 of the cooling plate 1310 extends outward to form an inlet and outlet section 1316, wherein the inlet and outlet section 1316 of one of the cooling plates 1310 is used to lead out the cooling medium. The inlet and outlet sections 1316 of the other cooling plate 1310 are used for introducing cooling medium.

It should be noted that if the inlet and outlet section 1316 for introducing cooling medium is connected to the chamber 13140 of the cooling plate 1310, then the inlet 13144 of the chamber 13140 is removed, that is, the inlet 13144 of the chamber 13140 is used. The inlet and outlet sections 1316 introduced by the cooling medium are replaced. Similarly, if the inlet and outlet section 1316 for extracting the cooling medium is connected to the chamber 13140 of the cooling plate 1310, the discharge port 13145 of the chamber 13140 will be removed.

As shown in Figure 9, the connecting pipe 1320 is divided into two pipe bodies 1321 from the middle, and each of the pipe bodies 1321 is connected to one of the cooling plates 1310, so that the two cooling plates 1310 pass through the The tube body 1321 is inserted from both ends of the stator to facilitate assembly. Two of the tube bodies 1321 can be connected by snapping, socketing, etc., and sealing structures such as sealing rings can even be added to improve the sealing performance and prevent the cooling medium from leaking.

Eighth embodiment

In the cooling structure of the eighth embodiment, the housing 1330 is made of a mixture of the thermally conductive material and the strength material.

The thermally conductive material and the strength material can be mixed according to a certain proportion and injection molded through a mold to meet the requirements of strength and thermal conductivity at the same time. At this time, the reinforcing ribs 1340 and the heat exchange member 1350 can be respectively disposed on the inner/outer surface of the housing 1330. The positions of the reinforcing ribs 1340 and the heat exchange member 1350 can be set as needed. .

To sum up, the shell 1330 of the cooling structures 1300a-1300g is made of a combination of thermal conductive materials and strength materials, so that the cooling structures 1300a-1300g meet the requirements of strength and thermal conductivity at the same time to ensure that the cooling structures 1300a-1300g meet the requirements of strength and thermal conductivity. The stability and reliability of the cooling structures 1300a-1300g are improved, and the cooling medium is introduced into the flow channel 1314 inside the housing 1330 to effectively cool the parts to be cooled. Moreover, the outer surface of the shell where the thermal conductive material is located forms a heat exchange surface, and the heat exchange surface directly contacts the parts to be cooled, so that the parts to be cooled and the cooling medium can effectively exchange heat, while ensuring the strength of the cooling structures 1300a to 1300g. , improve heat exchange performance, thereby achieving efficient cooling. In addition, the thermal conductive materials and strength materials of the cooling structures 1300a to 1300g can be non-metallic or metallic materials to increase the range of use. Furthermore, the housing 1300 can be spliced together by the rigid thermally conductive member 13301 and the strength member 13302, or can be injection molded by mixing the thermally conductive material and the strength material.

The invention also provides a manufacturing method of the cooling structure, the specific contents are as follows:

Ninth embodiment

As shown in Figures 1 to 12, the cooling structures 1300a to 1300g include a housing 1330 and a flow channel 1314 formed inside the housing 1330. The manufacturing method includes the following steps:

The thermally conductive material and the strength material are combined to form the shell 1330, and a heat exchange surface is formed on the outer surface of the shell where the thermally conductive material is located for contacting the parts to be cooled.

By adopting the above method, a cooling structure having both thermal conductive material and strength material properties is produced, that is, meeting the requirements of strength and thermal conductivity at the same time, thereby ensuring the stability and reliability of the cooling structure. The manufacturing method of the cooling structure can manufacture the cooling structures of the first to eighth embodiments. For details, please refer to the above embodiments and will not be described again here.

The methods include:

Provide at least one thermal conductive member 13301 composed of the thermal conductive material, and at least one strength member 13302 composed of the strength material;

The thermal conductive member 13301 and the strength member 13302 are injection molded together through a mold to manufacture the housing 1330 .

Specifically, the heat conductive member 13301 may be first processed and formed, and then placed in an injection mold. Then, a strength material may be placed into the injection mold to integrally injection mold the strength member 13302 connected to the heat conduction member 13301.

Further, the housing 1330 also includes a plurality of reinforcing ribs 1340. The reinforcing ribs 1340 are provided on the inner surface and/or the outer surface of the heat conductive member 13301. The method includes:

The strength member 13302 with the reinforcement rib 1340 is produced;

The side of the strength member 13302 with the reinforcing rib 1340 is injection molded and combined with the heat conductive member 13301 so that the reinforcing rib 1310 is disposed on the inner surface and/or the outer surface of the heat conductive member 13301.

Among other things, the methods include:

The thermally conductive material and the strength material are mixed, and the mixed thermally conductive material and the strength material are integrally injection molded through a mold to prepare the housing 1330 .

As shown in Figures 13 and 33, the axial magnetic field motor includes at least one cooling structure 1300a~1300g of the above embodiment, and the axial magnetic field motor also includes at least stators 1000a~1000e and At least one rotor 2000. The stators 1000a-1000e and the rotor 2000 are arranged at intervals along the axis to create an air gap between the stators 1000a-1000e and the rotor 2000. The cooling structures 1300a-1300g are nested in On the stators 1000a-1000e.

Since the axial magnetic field motor adopts the cooling structures 1300a to 1300g of the above embodiment, the beneficial effects of the axial magnetic field motor can be referred to the cooling structures 1300a to 1300g of the above embodiment. According to the difference in the number of the stators 1000a to 1000e and the rotor 2000, the axial magnetic field motor can be divided into a single rotor single stator motor, a single rotor double stator motor, a double rotor single stator motor, and the like. The following is a detailed introduction through six embodiments:

Tenth embodiment

As shown in Figures 13 to 19, the axial magnetic field motor includes two stators 1000a, a rotor 2000 and two cooling structures 1300e of the fifth embodiment. At this time, the rotor 2000 is maintained in an air gap between the two cooling structures 1300e. between stators 1000a, so that the axial magnetic field motor forms a single rotor double stator motor

Specifically, the stator 1000a includes a stator core 1100a and several coil assemblies 1200. The stator core 1100a includes a yoke plate 1110 and a plurality of tooth blocks 1120. The plurality of tooth blocks 1120 are on the yoke plate. 1110 is circumferentially spaced, and each of the tooth blocks 1120 is covered with a coil assembly 1200. The cooling structure 1300e is placed on the stator sleeve hole 1313 and the tooth block 1120 in a one-to-one correspondence. On the stator core 1100a, the stator opposing plate 1332 of the cooling structure 1300e is disposed toward the yoke plate 1110, and the rotor opposing plate 1331 is disposed toward the rotor 2000, so that the rotor 2000 The heat is transferred to the cooling structure 1300e through the air gap, and the heat transfer cooling is achieved by the cooling structure 1300e, see FIG. 5 .

Referring to Figure 15, the yoke plate 1110 is annular, the tooth blocks 1120 are extended and connected to the inner and outer edges of the yoke plate 1110, and the tooth blocks 1120 are adapted to the shapes of the stator sleeve holes 1313, both in the shape of Sector shape, refer to Figure 5.

Referring to FIG. 14 , the coil assembly 1200 is adapted to the shape of the tooth block 1120 and forms 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, so that when the coil assembly 1200 is placed on the tooth block 1120, the protruding portion of the tooth block 1120 relative to the coil assembly 1200, It is correspondingly inserted into the stator sleeve hole 1313 of the cooling structure 1300e, so that the stator opposing plate 1332 of the cooling structure 1300e abuts the coil assembly 1200. At this time, the coil assembly 1200 is located between the yoke plate 1110 and the Between the cooling structures 1300e, refer to FIG. 13 . It can be seen that the tooth block 1120 and the coil assembly 1200 have corresponding contacts with the cooling structure 1300e to improve the heat dissipation performance of the iron core winding. Moreover, the cooling structure 1300e prevents the coil from being separated from the stator core 1100a. That is, compared with the existing technology, the slot wedge structure is omitted, which reduces the number of motor parts, reduces costs, and effectively improves assembly efficiency.

Of course, the axial magnetic field motor of the tenth embodiment can adopt the cooling structure 1300c of the sixth embodiment. The branch 13323 of the stator relative plate 1332 protrudes outward to form a heat exchange member 1350. The heat exchange member 1350 can be embedded in the The heat exchange area is increased between two adjacent coil assemblies 1200 to further enhance the heat exchange capacity, see Figure 13 .

Referring to Figure 16, the coil assembly 1200 includes a coil 1201. An insulating and thermally conductive structure can be disposed between the coil 1201 and the cooling structure 1300e to ensure insulation between the coil 1201 and the cooling structure 1300e, as well as thermal insulation. Delivery etc. Continuing to refer to Figure 16, the insulating and heat-conducting structure may also be insulating paper 1202. Both sides of the circumference of the coil 1201 are wrapped with insulating paper 1202, ensuring the insulation between the coil 1201 and the cooling structure 1300e, and The heat of the coil 1201 can be transferred to the cooling structure 1300e through the insulating paper 1202.

As shown in Figures 13, 17 to 19, the axial magnetic field motor also includes a casing 3000. The casing 3000 includes two casings 3001. The casing 3001 includes a bottom plate 3100 and a base plate 3100 along the bottom plate. The outer edge of the bottom plate 3100 is extended to form an outer plate 3200. Each housing 3001 is fixed with a stator 1000a. The stator 1000a is located in the area surrounded by the outer plate 3200, and passes through the stator core 1100a. The yoke plate 1110 is fixed on the bottom plate 3100, and the outer plates 3200 of the two housings 3001 are relatively abutted and fixed in a manner that the bottom plate 3100 is external. The yoke plate 1110 can be fixed on the bottom plate 3100 by bolts, so that the cooling structure 1300e is located outside the housing 3001 relative to the stator 1000a, so that when the two housings 3001 pass through the outside When the plates 3200 are relatively abutted and fixed, there is one cooling structure 1300e between the rotor 2000 and each stator 1000a, so that both sides of the rotor 2000 can contact different cooling structures 1300e, thereby improving the Thermal performance. The two housings 3001 can be fixed by means of bolts, etc., which is not limited here.

The outer ring flow channel 13141 extends outward to form adjacent inlet and outlet sections 1316. The inlet and outlet sections 1316 are separated by partitions 13163 to form adjacent inlet portions 13161 and outlet portions 13162. There are openings on the outer plate 3200. There is a bayonet 3201 through which the inlet and outlet section 1316 passes. The bayonet 3201 not only allows the inlet and outlet sections 1316 to be led out, but also pre-fixes the cooling structure 1300e to ensure reliability and stability after assembly.

The casing 3000 also includes an inner plate 3300 and a support block 3400. The inner plate 3300 is sleeved inside the stator 1000a. The support block 3400 is disposed on the inner wall of the outer plate 3200. The cooling structure 1300e is supported and fixed on the inner panel 3200 and/or the support block 3400. Referring to Figure 13, the stator 1000a is located between the inner plate 3300 and the outer plate 3200. The cooling structure 1300e can abut the inner plate 3200 and/or the support block 3400 and be locked with bolts. . Referring to Figure 5, the cooling structure 1300e is provided with a mounting hole 1318 for bolts to pass through. The mounting hole 1318 is specifically located at a position corresponding to the outer ring flow channel 13141 and the inner ring flow channel 13142, that is, the outer ring flow channel 13141 abuts on a plurality of supporting blocks 3400 arranged at circumferential intervals, and the inner ring flow channel 13142 abuts on the inner side plate 3200 .

As shown in Figure 19, multiple support blocks 3400 are arranged at intervals on the inner wall of the outer panel 3200. Of course, multiple support blocks 3400 can be connected in sequence to form a continuous annular structure to ensure that the cooling structure 1300e Fixed stability.

Eleventh embodiment

As shown in Figures 20 to 22, the axial magnetic field motor of the eleventh embodiment is different from the tenth embodiment in that the stator 1000b includes a stator core 1100b with a plurality of tooth blocks 1120. Both circumferential sides of the block 1120 are respectively recessed inward to form a recess 1121. The coil assembly 1200 is embedded in the recess 1121, and the cooling structure 1300e is engaged between the two adjacent coil assemblies 1200. So that the stator opposing plate 1332 of the cooling structure 1300e abuts the yoke plate 1110 . The contact area between the cooling structure 1300e and the stator core 1100b and the coil assembly 1200 is further increased, thereby further improving the heat dissipation performance.

Referring to FIG. 21 , the recess 1121 extends from the connection position between the tooth block 1120 and the yoke 1110 and along the height direction of the tooth block 1120 , wherein the extension height of the recess 1121 is smaller than that of the tooth block 1120 . height, so that when the cooling structure 1300e is engaged between two adjacent coil assemblies 1200, the tooth block 1120 can also contact the cooling structure 1300e.

The insulating and thermally conductive structure between the coil 1201 of the coil assembly 1200 and the cooling structure 1300e can be made of aluminum oxide sheets or coatings with high thermal conductivity, and the joint surface is filled with thermally conductive silicone grease or thermally conductive glue.

Twelfth embodiment

As shown in Figures 23 to 27, the axial magnetic field motor of the twelfth embodiment is different from the tenth embodiment in that the stator 1000c includes a stator core 1100c, and the stator core 1100c includes a plurality of circumferentially spaced-apart The tooth block 1120, and a yoke plate 1110, the yoke plate 1110 is connected to the middle position of the two axial end surfaces of each tooth block 1120. A coil assembly 1200 is set on both axial sides of the tooth block 1120, and the coil assembly 1200 is in contact with the tooth block 1110. In addition, a cooling structure 1300e is set on both axial sides of the stator 1000c. In addition, the number of rotors 2000 of the axial magnetic field motor of the twelfth embodiment is two, and the stator 1000c is held between the two rotors 2000 with an air gap, so that the axial magnetic field motor forms a double-rotor single-stator motor. .

Each rotor 2000 corresponds to a rotor opposing plate 1331 of the cooling structure 1300e. The heat of the rotor 2000 is transferred to the corresponding cooling structure 1300e through the air gap, and is realized by the cooling structure 1300e. Heat transfer cooling.

As shown in Figures 23, 26 and 27, the casing 3000 includes an outer plate 3200 and two bottom plates 3100. Bayonets 3201 are respectively provided at both ends of the outer plate 3200. The outer surface of the cooling structure 1300e The circulation channel 13141 extends outward to form an inlet and outlet section 1316. The two cooling structures 1300e are respectively engaged with the bayonet 3201 at both ends of the outer plate 3200 through the inlet and outlet sections 1316, so that the two cooling structures 1300e are integrally connected. The stator 1000c is fixed between the two cooling structures 1300e, and both ends of the outer plate 3200 are closed by the bottom plate 3100.

As shown in Figures 23 to 27, the casing 3000 also includes an inner plate 3300 and a support block 3400. The inner plate 3300 is sleeved inside the stator 1000c, and the support block 3400 is disposed on the outer side. On the inner wall of the plate 3200, the cooling structure 1300e is supported and fixed on the inner plate 3200 and/or the support block 3400. The support block 3400 has a continuous annular structure, so that the two cooling structures 1300e are respectively in contact with both sides of the support block 3400 and the inner plate 3200.

As shown in Figure 27, the axial magnetic field motor also includes a rotating shaft, which passes through the center of the stator 1000c and the inner plate 3300, and is rotatably disposed inside the casing 3000. For example, the rotating shaft Both ends are respectively rotatably connected to the bottom plate 3100. The rotor 2000 is fixed on the rotating shaft.

Thirteenth embodiment

As shown in Figures 28 and 29, the axial magnetic field motor of the thirteenth embodiment is different from the twelfth embodiment in that the stator 1000d includes a stator core 1100d, and the stator core 1100d includes a plurality of circumferentially spaced arrays. The tooth block 1120, and a yoke plate 1110, the yoke plate 1110 is connected to the middle position of the two axial end surfaces of each tooth block 1120. A coil assembly 1200 is respectively placed on both axial sides of the tooth block 1120, and the coil assembly 1200 is embedded in the recess 1121 of the tooth block 1120, so that the stator of the cooling structure 1300e faces the plate. 1332 abuts the yoke plate 1110 . The contact area between the cooling structure 1300e and the stator core 1100b and the coil assembly 1200 is further increased, thereby further improving the heat dissipation performance.

Fourteenth embodiment

As shown in Figures 30 to 32, the axial magnetic field motor of the fourteenth embodiment is different from the twelfth embodiment in that the stator core 1100e of the stator 1000e only includes a number of teeth arranged at circumferential intervals. Block 1120 without yoke plate 1110.

In addition, a plurality of clamping strips 3210 arranged at intervals are provided on the inner wall of the outer plate, so that the tooth block 1120 is engaged between two adjacent clamping strips 3210. Refer to Figures 30 and 32. Specifically, the tooth block 1120 passes between the two adjacent clamping bars 3210, and the surface of the tooth block 1120 is smooth, so that the two cooling structures 1300e are sleeved on the tooth block 1120. , and after being engaged at both ends of the outer plate, the two coil assemblies 1200 sleeved on the tooth block 1120 can be disposed on both sides of the clip bar 3210, and the coil assemblies 1200 on each side It can be positioned between the cooling structure 1300e and the clip 3210, which not only eliminates the positioning structure, makes the structure more compact, reduces costs, but also improves the reliability and stability of the structure.

Fifteenth embodiment

As shown in Figure 33, the axial magnetic field motor of the fifteenth embodiment is different from the fourteenth embodiment in that it adopts the cooling structure 1300g of the seventh embodiment.

The above-described embodiments are only used to illustrate the technical ideas and characteristics of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The present invention cannot be limited only by this embodiment. The patent scope means that all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

A cooling structure (1300a-1300g), characterized in that the cooling structure (1300a-1300g) includes a shell (1330), and a flow channel (1314) formed inside the shell (1330), the The shell (1330) is made of a combination of thermal conductive material and strength material, and a heat exchange surface is formed on the outer surface of the shell where the thermal conductive material is located for contacting the parts to be cooled.
The cooling structure (1300a-1300g) of claim 1, wherein the housing (1330) is divided into at least one thermal conductive member (13301) composed of the thermal conductive material, and at least one thermally conductive member (13301) composed of the strength A strength member (13302) made of material, the heat conduction member (13301) and the strength member (13302) are spliced to form the housing (1330).
The cooling structure (1300a-1300g) of claim 1, wherein the housing (1330) is made of a mixture of the thermally conductive material and the strength material.
The cooling structure (1300a-1300g) of claim 1, further comprising at least one reinforcing rib (1340), the reinforcing rib (1340) being disposed on the outer surface of the housing where the thermally conductive material is located and/or The inner surface;

And/or, it also includes at least one heat exchange element (1350) composed of the thermal conductive material, and the outer surface and/or the inner surface of the housing where the thermal conductive material is located are raised to form the heat exchange element (1350), And the heat exchange component (1350) located on the outer surface of the housing can be embedded inside the component to be cooled.
The cooling structure (1300a-1300g) of claim 1, wherein the housing (1330) of the cooling mechanism (1300e, 1300f) includes at least a stator opposing plate (1332) and at least one rotor opposing plate (1332). 1331), and several stator sleeve holes (1313) that penetrate the rotor opposing plate (1331) and the stator opposing plate (1332), and the flow channel (1314) is formed on the rotor opposing plate (1331) and the stator opposing plate (1332). Between the stator opposing plates (1332) and around each stator sleeve hole (1313), at least part of the stator opposing plate (1332) and/or the rotor opposing plate (1331) is formed by the Describe the composition of thermally conductive materials.
An axial magnetic field motor, characterized in that it includes at least one cooling structure (1300a-1300g) according to any one of claims 1 to 5, and the axial magnetic field motor further includes at least a stator (1000a-1000e) and at least one rotor (2000), the stator (1000a~1000e) and the rotor (2000) are spaced apart along the axis to create an air gap between the stator (1000a~1000e) and the rotor (2000) , the cooling structure (1300a-1300g) is sleeved on the stator (1000a-1000e).
A method of manufacturing a cooling structure. The cooling structure (1300a-1300g) includes a shell (1330) and a flow channel (1314) formed inside the shell (1330). It is characterized in that the manufacturing method includes the following step:

The thermally conductive material and the strength material are combined to prepare the shell (1330), and a heat exchange surface is formed on the outer surface of the shell where the thermally conductive material is located for contacting the parts to be cooled.
The manufacturing method according to claim 7, characterized in that the method includes:

Provide at least one thermally conductive member (13301) composed of the thermally conductive material, and at least one strength member (13302) composed of the strength material;

The thermal conductive member (13301) and the strength member (13302) are injection molded together through a mold to produce the housing (1330).
The manufacturing method according to claim 8, characterized in that the housing (1330) further includes a plurality of reinforcing ribs (1340), the reinforcing ribs (1340) are arranged on the inner surface of the heat conductive member (13301) and/or outer surface, the method includes:

Preparing the strength member (13302) with the reinforcement rib (1340);

The side of the strength member (13302) with the reinforcement rib (1340) is injection molded and combined with the heat conduction member (13301), so that the reinforcement rib (1310) is disposed on the heat conduction member (13301) ) inner and/or outer surface.
The manufacturing method according to claim 7, characterized in that the method includes:

The thermally conductive material and the strength material are mixed, and the mixed thermally conductive material and the strength material are integrally injection molded through a mold to prepare the shell (1330).