A motor heat conducting structure

Abstract

This invention belongs to the field of motor technology, and particularly relates to a motor heat-conducting structure. The invention includes a motor housing, within which a motor core and motor windings are housed, and a contoured mounting chamber is provided within the motor housing. In use, based on the gap between the motor core and motor windings and the contoured mounting chamber, the lower structure of a detachable contoured heat-conducting component is first placed within the contoured mounting chamber, then the motor core and motor windings are installed into the contoured mounting chamber, and finally, the upper structure of the detachable contoured heat-conducting component is fixed to the lower structure. This detachable structure fully fills the gap between the motor core and motor windings and the contoured mounting chamber, reducing dead zones for heat dissipation and minimizing the impact of space size on heat conduction. This significantly improves the floor space occupied by the heat dissipation structure, thereby greatly enhancing heat dissipation efficiency and demonstrating strong practicality.

Description

Technical Field

[0001] This invention belongs to the field of motor technology and relates to a motor heat-conducting structure. Background Technology

[0002] The stator coil in an electric motor is the main heat-generating component. During operation, the coil carries high voltage and current, and operates within a high-frequency changing magnetic field, making the design of its cooling structure very challenging. Encapsulation with thermally conductive colloid is currently a feasible solution for cooling the stator coil. However, existing motor encapsulation thermal structures have relatively low thermal conductivity. When used with ceramic balls, the large proportion of small-diameter ceramic balls makes it difficult for the encapsulation to fill the gaps between the ceramic balls, resulting in low thermal conductivity. The size of the space significantly affects heat conduction, leading to a small footprint and relatively low heat dissipation efficiency.

[0003] To overcome the shortcomings of existing technologies, various solutions have been proposed through continuous exploration. For example, a Chinese patent discloses a stator assembly and an axial magnetic field motor [Application No.: 201811372174.5]. This stator assembly includes: a housing with cooling channels; a stator core located within the housing; windings disposed on the stator core; and an insulating heat-conducting plate in direct contact with the housing, wherein insulating heat-conducting ribs are disposed between adjacent windings. When the stator assembly of this invention is running, the insulating heat-conducting ribs transfer heat from the windings to the insulating heat-conducting plate, and then from the insulating heat-conducting plate to the housing, which dissipates heat through the cooling channels. Compared with existing technologies, this solution still has a relatively low thermal conductivity during use, and the size of the motor housing has a significant impact on heat conduction, resulting in a small footprint and relatively low heat dissipation efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a heat-conducting structure for an electric motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A motor heat-conducting structure includes a motor housing, a motor core and a motor winding inside the motor housing, a contour-following mounting chamber inside the motor housing, the motor core and the motor winding located inside the contour-following mounting chamber, and a detachable contour-following heat-conducting component inside the contour-following mounting chamber, wherein the motor core and the motor winding are respectively tightly fitted to the detachable contour-following heat-conducting component.

[0007] In the above-mentioned motor heat conduction structure, the detachable contour heat conduction assembly includes an inner ring heat conduction contour component and an outer ring heat conduction contour component disposed in the contour placement chamber, and the motor core is located between the inner ring heat conduction contour component and the outer ring heat conduction contour component.

[0008] In the above-mentioned motor heat conduction structure, the inner ring heat conduction profile includes an inner ring heat conduction profile lower seat disposed in the profile placement chamber, and the inner ring heat conduction profile lower seat is made of heat-conducting insulating material.

[0009] In the above-mentioned motor heat conduction structure, the inner ring heat conduction contouring lower seat is made of solid ceramic material, and potting compound is filled between the inner ring heat conduction contouring lower seat and the motor winding.

[0010] In the above-mentioned motor heat conduction structure, the contoured mounting cavity is provided with an inner ring heat conduction contoured upper seat, and the inner ring heat conduction contoured upper seat and the inner ring heat conduction contoured lower seat are fixed by a shaft and a fixing adhesive. The inner ring end of the motor winding is located between the inner ring heat conduction contoured upper seat and the inner ring heat conduction contoured lower seat.

[0011] In the above-mentioned motor heat conduction structure, the inner ring heat conduction contour upper seat is made of solid ceramic material, and potting compound is filled between the inner ring heat conduction contour upper seat and the motor winding.

[0012] In the above-mentioned motor heat conduction structure, the outer ring heat conduction profile includes an outer ring heat conduction profile lower seat disposed in the profile placement chamber, and the outer ring heat conduction profile lower seat is made of heat-conducting insulating material.

[0013] In the above-mentioned motor heat conduction structure, the outer ring heat conduction contouring lower seat is made of solid ceramic material, and potting compound is filled between the outer ring heat conduction contouring lower seat and the motor winding.

[0014] In the above-mentioned motor heat conduction structure, the contoured mounting cavity is provided with an outer ring heat conduction contoured upper seat, and the outer ring heat conduction contoured upper seat and the outer ring heat conduction contoured lower seat are fixed by a shaft and a fixing adhesive. The outer ring end of the motor winding is located between the outer ring heat conduction contoured upper seat and the outer ring heat conduction contoured lower seat.

[0015] In the above-mentioned motor heat conduction structure, the outer ring heat conduction contour upper seat is made of solid ceramic material, and potting compound is filled between the outer ring heat conduction contour upper seat and the motor winding.

[0016] Compared with existing technologies, the advantages of this invention are:

[0017] 1. In the process of using this invention, based on the gap space between the motor core and motor windings and the contoured mounting chamber, the lower structure of the detachable contoured heat conduction component is first placed in the contoured mounting chamber, then the motor core and motor windings are installed into the contoured mounting chamber, and then the upper structure of the detachable contoured heat conduction component is fixed to the lower structure of the detachable contoured heat conduction component. By adopting a detachable structure, the gap space between the motor core and motor windings and the contoured mounting chamber is fully filled. With the help of potting compound, dead corners for heat dissipation and heat conduction are reduced, the influence of space size on heat conduction is reduced, and the floor area of ​​the heat dissipation and heat conduction structure is greatly improved, thereby significantly improving heat dissipation efficiency and making it highly practical.

[0018] 2. In this invention, the inner ring thermally conductive upper seat and the inner ring thermally conductive lower seat are fixed together by a shaft and a fixing adhesive, and the outer ring thermally conductive upper seat and the outer ring thermally conductive lower seat are fixed together by a shaft and a fixing adhesive. The structure is detachable, which makes installation simple and convenient, and provides good fixing effect and tightness.

[0019] 3. In this invention, the first and second positioning side blocks are slidably engaged with the inner ring positioning groove, and the first and second positioning side blocks are abutting against each other. The third and fourth positioning side blocks are slidably engaged with the outer ring positioning groove, and the third and fourth positioning side blocks are abutting against each other. During installation, accurate positioning can be ensured. When assembling with the motor core and motor windings, the structure will not rotate or slide, and the stability is strong.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Example 1.

[0022] Figure 2 This is a schematic diagram of the structure of Example 2.

[0023] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0024] In the diagram: 1. Motor housing; 2. Motor core; 3. Motor winding; 4. Detachable contoured heat-conducting assembly; 5. Inner ring heat-conducting contoured component; 6. Outer ring heat-conducting contoured component; 7. Inner ring heat-conducting contoured lower seat; 8. First filling heat-conducting part; 9. First filling space; 10. First ceramic ball; 11. First potting filling channel; 12. Inner ring heat-conducting contoured upper seat; 13. Second filling heat-conducting part; 14. Second filling space; 15. Second potting filling channel; 16. Outer ring heat-conducting contoured lower seat; 17. Third filling heat-conducting part; 18. Third filling space; 19. Third ceramic ball; 20. Third potting filling channel; 21. Outer ring heat-conducting contoured upper seat; 22. Fourth filling heat-conducting part; 23. Fourth filling space; 24. Fourth ceramic ball; 25. Fourth potting filling channel; 26. Inner ring positioning groove; 27. Outer ring positioning groove; 28. First positioning side block; 29. ​​Second positioning side block; 30. Third positioning side block; 31. Fourth positioning side block; 32. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figure 1 As shown, a motor heat conduction structure includes a motor housing 1, a motor core 2 and a motor winding 3 inside the motor housing 1, a contoured mounting chamber inside the motor housing 1, the motor core 2 and the motor winding 3 located inside the contoured mounting chamber, and a detachable contoured heat conduction component 4 inside the contoured mounting chamber, wherein the motor core 2 and the motor winding 3 are respectively tightly fitted to the detachable contoured heat conduction component 4.

[0028] In this embodiment, during use, based on the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber, the lower structure of the detachable contoured heat conduction component 4 is first placed in the contoured mounting chamber, then the motor core 2 and the motor winding 3 are installed into the contoured mounting chamber, and then the upper structure of the detachable contoured heat conduction component 4 is fixed to the lower structure of the detachable contoured heat conduction component 4. By adopting a detachable structure, the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber is fully filled. With the help of potting compound, dead corners for heat dissipation and heat conduction are reduced, the influence of space size on heat conduction is reduced, and the floor area of ​​the heat dissipation and heat conduction structure is greatly increased, thereby significantly improving heat dissipation efficiency and making it highly practical.

[0029] Combination Figure 1 As shown, the detachable contour-conducting heat-conducting assembly 4 includes an inner ring heat-conducting contour-conducting component 5 and an outer ring heat-conducting contour-conducting component 6 disposed in the contour-conducting placement chamber, and the motor core 2 is located between the inner ring heat-conducting contour-conducting component 5 and the outer ring heat-conducting contour-conducting component 6.

[0030] Specifically, during use, based on the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber, the lower structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are first placed in the contoured mounting chamber. Then, the motor core 2 and the motor winding 3 are installed into the contoured mounting chamber. Next, the upper structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are fixed to the lower structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6. The space between the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 and the motor core 2 is filled with potting compound. A detachable structure is adopted to fully fill the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber, reducing dead angles for heat dissipation and heat conduction, reducing the impact of space size on heat conduction, greatly increasing the floor area of ​​the heat dissipation and heat conduction structure, thereby significantly improving heat dissipation efficiency and making it highly practical.

[0031] Combination Figure 1 As shown, the inner ring thermally conductive contouring component 5 includes an inner ring thermally conductive contouring lower seat 7 disposed in the contouring placement chamber, and the inner ring thermally conductive contouring lower seat 7 is made of thermally conductive insulating material.

[0032] In this embodiment, the inner ring heat-conducting contoured lower seat 7 is used to tightly fit the lower part of the inner ring of the motor core 2 and the motor winding 3. The contoured structure is used for heat conduction and heat dissipation. The inner ring heat-conducting contoured lower seat 7 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible.

[0033] The inner ring heat-conducting contour lower seat 7 is made of solid ceramic material, and potting compound is filled between the inner ring heat-conducting contour lower seat 7 and the motor winding 3.

[0034] In this embodiment, the inner ring thermally conductive contoured lower seat 7 is made of solid ceramic material. Ceramic is a high thermal conductivity insulating material. A potting compound is filled between the inner ring thermally conductive contoured lower seat 7 and the motor winding 3 to improve heat dissipation. The main component of the potting compound is epoxy resin, which has a thermal conductivity of 0.1-0.21 W / m^K. High thermal conductivity oxide particles are typically added to further improve the thermal conductivity of the colloid. The oxide particles have a thermal conductivity of 15-201 W / m^K and a particle size of approximately 5 μm to 50 μm. After mixing, the thermal conductivity of the colloid is approximately 1 W / m^K.

[0035] Specifically, the colloid used is ZB3231 colloid, produced by Nanjing Zhongbei New Material Technology Co., Ltd. The main components of this colloid are epoxy resin, inorganic filler, curing agent, and plasticizer. The inorganic filler is an inorganic thermally conductive powder with a particle size of less than 20μm. Experiments have verified that this colloid has a thermal conductivity of 0.7W / mK, an insulation strength of 18kV / mm, and can withstand a high temperature of 180℃ after curing.

[0036] Combination Figure 1 As shown, the contouring cavity is provided with an inner ring heat-conducting contouring upper seat 12. The inner ring heat-conducting contouring upper seat 12 and the inner ring heat-conducting contouring lower seat 7 are fixed together by a shaft and a fixing adhesive. The inner ring end of the motor winding 3 is located between the inner ring heat-conducting contouring upper seat 12 and the inner ring heat-conducting contouring lower seat 7.

[0037] In this embodiment, the upper inner ring of the motor core 2 and the upper inner ring of the motor winding 3 are tightly fitted by the inner ring heat-conducting contour upper seat 12. The contour structure is used for heat conduction and heat dissipation. The inner ring heat-conducting contour upper seat 12 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible. The inner ring heat-conducting contour upper seat 12 and the inner ring heat-conducting contour lower seat 7 are fixed by a shaft and a fixing adhesive. The structure is detachable, which makes the installation simple and convenient, and the fixing effect and tightness are good.

[0038] The inner ring heat-conducting contour upper seat 12 is made of solid ceramic material, and potting compound is filled between the inner ring heat-conducting contour upper seat 12 and the motor winding 3.

[0039] In this embodiment, the inner ring thermally conductive contour upper seat 12 is made of solid ceramic material. Ceramic is an insulating material with high thermal conductivity. The inner ring thermally conductive contour upper seat 12 and the motor winding 3 are filled with potting compound to improve heat dissipation. The main body of the potting compound is epoxy resin.

[0040] The outer ring thermally conductive contouring component 6 includes an outer ring thermally conductive contouring lower seat 17 disposed in the contouring placement chamber, and the outer ring thermally conductive contouring lower seat 17 is made of thermally conductive insulating material.

[0041] In this embodiment, the lower outer ring of the motor core 2 and the motor winding 3 are tightly fitted together by the outer ring heat-conducting contoured lower seat 17. The contoured structure is used for heat conduction and heat dissipation. The outer ring heat-conducting contoured lower seat 17 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible.

[0042] Combination Figure 1 As shown, the outer ring heat-conducting contoured lower seat 17 is made of solid ceramic material, and potting compound is filled between the outer ring heat-conducting contoured lower seat 17 and the motor winding 3.

[0043] In this embodiment, the outer ring thermally conductive contoured lower seat 17 is made of solid ceramic material. Ceramic is an insulating material with high thermal conductivity. The space between the outer ring thermally conductive contoured lower seat 17 and the motor winding 3 is filled with potting compound to improve heat dissipation. The main body of the potting compound is epoxy resin.

[0044] Combination Figure 1 As shown, the contouring cavity is provided with an outer ring heat-conducting contouring upper seat 22. The outer ring heat-conducting contouring upper seat 22 and the outer ring heat-conducting contouring lower seat 17 are fixed together by a shaft and a fixing adhesive. The outer ring end of the motor winding 3 is located between the outer ring heat-conducting contouring upper seat 22 and the outer ring heat-conducting contouring lower seat 17.

[0045] In this embodiment, the upper outer ring of the motor core 2 and the upper outer ring of the motor winding 3 are tightly fitted by the outer ring heat-conducting contour upper seat 22. The contour structure is used for heat conduction and heat dissipation. The outer ring heat-conducting contour upper seat 22 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible. The outer ring heat-conducting contour upper seat 22 and the outer ring heat-conducting contour lower seat 17 are fixed by a shaft and a fixing adhesive. The structure is detachable, which makes the installation simple and convenient, and the fixing effect and tightness are good.

[0046] Combination Figure 1 As shown, the outer ring heat-conducting contour upper seat 22 is made of solid ceramic material, and potting compound is filled between the outer ring heat-conducting contour upper seat 22 and the motor winding 3.

[0047] In this embodiment, the outer ring thermally conductive contour upper seat 22 is made of solid ceramic material. Ceramic is an insulating material with high thermal conductivity. The space between the outer ring thermally conductive contour upper seat 22 and the motor winding 3 is filled with potting compound to improve heat dissipation. The main body of the potting compound is epoxy resin.

[0048] Combination Figure 1 As shown, the motor housing 1 is provided with an inner ring positioning groove 27 and an outer ring positioning groove 28. The inner ring heat-conducting contouring lower seat 7 is provided with a first positioning side block 29, the inner ring heat-conducting contouring upper seat 12 is provided with a second positioning side block 30, the outer ring heat-conducting contouring lower seat 17 is provided with a third positioning side block 31, and the outer ring heat-conducting contouring upper seat 22 is provided with a fourth positioning side block 32.

[0049] In this embodiment, the first positioning side block 29 and the second positioning side block 30 are slidably engaged with the inner ring positioning groove 27, and the first positioning side block 29 and the second positioning side block 30 are abuttingly engaged with each other. The third positioning side block 31 and the fourth positioning side block 32 are slidably engaged with the outer ring positioning groove 28, and the third positioning side block 31 and the fourth positioning side block 32 are abuttingly engaged with each other. During the installation process, accurate positioning can be ensured. When assembling with the motor core 2 and the motor winding 3, its structure will not rotate or slide, and its stability is strong.

[0050] Example 2

[0051] like Figure 2 , Figure 3As shown, a motor heat conduction structure includes a motor housing 1, a motor core 2 and a motor winding 3 inside the motor housing 1, a contoured mounting chamber inside the motor housing 1, the motor core 2 and the motor winding 3 located inside the contoured mounting chamber, and a detachable contoured heat conduction component 4 inside the contoured mounting chamber, wherein the motor core 2 and the motor winding 3 are respectively tightly fitted to the detachable contoured heat conduction component 4.

[0052] In this embodiment, during use, based on the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber, the lower structure of the detachable contoured heat conduction component 4 is first placed in the contoured mounting chamber, then the motor core 2 and the motor winding 3 are installed into the contoured mounting chamber, and then the upper structure of the detachable contoured heat conduction component 4 is fixed to the lower structure of the detachable contoured heat conduction component 4. By adopting a detachable structure, the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber is fully filled, reducing dead angles for heat dissipation and heat conduction, reducing the impact of space size on heat conduction, greatly increasing the floor area of ​​the heat dissipation and heat conduction structure, thereby significantly improving heat dissipation efficiency and making it highly practical.

[0053] Combination Figure 2 , Figure 3 As shown, the detachable contour-conducting heat-conducting assembly 4 includes an inner ring heat-conducting contour-conducting component 5 and an outer ring heat-conducting contour-conducting component 6 disposed in the contour-conducting placement chamber, and the motor core 2 is located between the inner ring heat-conducting contour-conducting component 5 and the outer ring heat-conducting contour-conducting component 6.

[0054] Specifically, during use, based on the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber, the lower structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are first placed in the contoured mounting chamber. Then, the motor core 2 and the motor winding 3 are installed into the contoured mounting chamber. Finally, the upper structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are fixed to the lower structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6. By adopting a detachable structure, the gap between the motor core 2 and the motor winding 3 and the contoured mounting chamber is fully filled, reducing dead angles for heat dissipation and heat conduction, reducing the impact of space size on heat conduction, greatly increasing the floor area of ​​the heat dissipation and heat conduction structure, thereby significantly improving heat dissipation efficiency and making it highly practical.

[0055] Combination Figure 2 , Figure 3 As shown, the inner ring thermally conductive contouring component 5 includes an inner ring thermally conductive contouring lower seat 7 disposed in the contouring placement chamber. The inner ring thermally conductive contouring lower seat 7 is made of thermally conductive insulating material, and a first filling thermally conductive part 8 is provided inside the inner ring thermally conductive contouring lower seat 7.

[0056] In this embodiment, the inner ring heat-conducting contoured lower seat 7 tightly fits the lower part of the inner ring of the motor core 2 and the motor winding 3, and adopts a contoured structure for heat conduction and dissipation. The inner ring heat-conducting contoured lower seat 7 is made of thermally conductive and insulating material. In the material selection, alumina and aluminum nitride were determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, materials such as diamond are also feasible. The first filling heat-conducting part 8 adopts an internal filling structure, which, together with the contoured structure, maximizes the proportion of heat dissipation elements per unit area, and can significantly improve heat dissipation efficiency.

[0057] The first filling heat-conducting part 8 includes a first filling space 9 disposed in the inner ring heat-conducting contouring lower seat 7. The first filling space 9 is provided with a plurality of first ceramic balls 10. The first ceramic balls 10 and the inner ring heat-conducting contouring lower seat 7 are filled with potting compound. The bottom of the inner ring heat-conducting contouring lower seat 7 is provided with a first potting filling channel 11, which is connected to the first filling space 9.

[0058] In this embodiment, the first filling space 9 is used to fill and place the first ceramic ball 10, and is filled with potting compound. The first potting filling channel 11 facilitates the filling of potting compound. The main component of the potting compound is epoxy resin, which has a thermal conductivity of 0.1-0.21 W / m^K. Generally, high thermal conductivity oxide particles are added to improve the thermal conductivity of the colloid. The thermal conductivity of the oxide particles is 15-201 W / m^K, and the particle size of the oxide particles is about 5μm to 50μm. After mixing, the thermal conductivity of the colloid is about 1 W / m^K.

[0059] Specifically, the colloid used is ZB3231 colloid, produced by Nanjing Zhongbei New Material Technology Co., Ltd. The main components of this colloid are epoxy resin, inorganic filler, curing agent, and plasticizer. The inorganic filler is an inorganic thermally conductive powder with a particle size of less than 20μm. Experiments have verified that this colloid has a thermal conductivity of 0.7W / mK, an insulation strength of 18kV / mm, and can withstand a high temperature of 180℃ after curing.

[0060] Combination Figure 3 As shown, the contouring cavity is provided with an inner ring heat-conducting contouring upper seat 12. The inner ring heat-conducting contouring upper seat 12 and the inner ring heat-conducting contouring lower seat 7 are fixed together by a shaft and a fixing adhesive. The inner ring end of the motor winding 3 is located between the inner ring heat-conducting contouring upper seat 12 and the inner ring heat-conducting contouring lower seat 7. The inner ring heat-conducting contouring upper seat 12 is provided with a second filling heat-conducting part 13.

[0061] In this embodiment, the inner ring heat-conducting contour upper seat 12 is used to tightly fit the upper part of the inner ring of the motor core 2 and the motor winding 3. The contour structure is used for heat conduction and heat dissipation. The inner ring heat-conducting contour upper seat 12 is made of thermally conductive and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible. The second filling heat-conducting part 13 adopts an internal filling structure. With the contour structure, the proportion of heat dissipation elements per unit area is maximized, which can significantly improve the heat dissipation efficiency. The inner ring heat-conducting contour upper seat 12 and the inner ring heat-conducting contour lower seat 7 are fixed by a shaft and a fixing adhesive. The structure is detachable, which makes the installation simple and convenient, and the fixing effect and tightness are good.

[0062] The second filling and heat-conducting part 13 includes a second filling space 14 disposed within the inner ring heat-conducting contour upper seat 12. The second filling space 14 is provided with a plurality of second ceramic balls 15. The space between the second ceramic balls 15 and the inner ring heat-conducting contour upper seat 12 is filled with potting compound. The top of the inner ring heat-conducting contour upper seat 12 is provided with a second potting filling channel 16, which is connected to the second filling space 14.

[0063] In this embodiment, the second filling space 14 is used to fill and place the second ceramic ball 15, and is filled with potting compound. The second potting filling channel 16 facilitates the filling of potting compound.

[0064] The outer ring thermally conductive contouring component 6 includes an outer ring thermally conductive contouring lower seat 17 disposed in the contouring placement chamber. The outer ring thermally conductive contouring lower seat 17 is made of thermally conductive insulating material, and a third filling thermally conductive part 18 is provided inside the outer ring thermally conductive contouring lower seat 17.

[0065] In this embodiment, the lower outer ring of the motor core 2 and the lower outer ring of the motor winding 3 are tightly fitted by the outer ring heat-conducting contoured base 17. The contoured structure is used for heat conduction and heat dissipation. The outer ring heat-conducting contoured base 17 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible. The third filling heat-conducting part 18 adopts an internal filling structure. Combined with the contoured structure, it maximizes the proportion of heat dissipation elements per unit area, which can significantly improve heat dissipation efficiency.

[0066] Combination Figure 3As shown, the third filling and heat-conducting part 18 includes a third filling space 19 disposed in the outer ring heat-conducting contouring lower seat 17. The third filling space 19 is provided with a plurality of third ceramic balls 20. The third ceramic balls 20 and the outer ring heat-conducting contouring lower seat 17 are filled with potting compound. The bottom of the outer ring heat-conducting contouring lower seat 17 is provided with a third potting filling channel 21, which is connected to the third filling space 19.

[0067] In this embodiment, the third filling space 19 is used to fill and place the third ceramic ball 20, and is filled with potting compound. The third potting filling channel 21 facilitates the filling of potting compound.

[0068] Combination Figure 2 , Figure 3 As shown, the contouring cavity is provided with an outer ring heat-conducting contouring upper seat 22. The outer ring heat-conducting contouring upper seat 22 and the outer ring heat-conducting contouring lower seat 17 are fixed by a shaft and a fixing adhesive. The outer ring end of the motor winding 3 is located between the outer ring heat-conducting contouring upper seat 22 and the outer ring heat-conducting contouring lower seat 17. The outer ring heat-conducting contouring upper seat 22 is provided with a fourth filling heat-conducting part 23.

[0069] In this embodiment, the upper outer ring of the motor core 2 and the upper outer ring of the motor winding 3 are tightly fitted by the outer ring heat-conducting contour upper seat 22. The contour structure is used for heat conduction and heat dissipation. The outer ring heat-conducting contour upper seat 22 is made of heat-conducting and insulating material. In the material selection, alumina and aluminum nitride are determined to be feasible materials. In addition, based on the properties of the materials and reasonable inferences, diamond and other materials are also feasible. The fourth filling heat-conducting part 23 adopts an internal filling structure. With the contour structure, the proportion of heat dissipation elements per unit area is maximized, which can significantly improve the heat dissipation efficiency. The outer ring heat-conducting contour upper seat 22 and the outer ring heat-conducting contour lower seat 17 are fixed by a shaft and a fixing adhesive. The structure is detachable, which makes the installation simple and convenient, and the fixing effect and tightness are good.

[0070] Combination Figure 3 As shown, the fourth filling and heat-conducting part 23 includes a fourth filling space 24 disposed within the outer ring heat-conducting contour upper seat 22. The fourth filling space 24 is provided with a plurality of fourth ceramic balls 25. The space between the fourth ceramic balls 25 and the outer ring heat-conducting contour upper seat 22 is filled with potting compound. The top of the outer ring heat-conducting contour upper seat 22 is provided with a fourth potting filling channel 26, which is connected to the fourth filling space 24.

[0071] In this embodiment, the fourth filling space 24 is used to fill and place the fourth ceramic ball 25, and is filled with potting compound. The fourth potting filling channel 26 facilitates the filling of potting compound. The selection of the first ceramic ball 10, the second ceramic ball 15, the third ceramic ball 20, and the fourth ceramic ball 25 should be able to meet the complex environment of high insulation, high thermal conductivity, and high magnetic field inside the motor. Finally, alumina material with a purity ≥92% is selected as the large-diameter solid particle 4. The expansion coefficient of alumina material is 8x10-6 / ℃. Alumina material can effectively reduce the cracking effect of the colloid. After 300 cold and hot shock tests (-30 to 60℃), no structural defects were found. At the same time, alumina has a high thermal conductivity and a high insulation coefficient. As a large-diameter solid particle 4, it can achieve a dual improvement in insulation and thermal conductivity.

[0072] Combination Figure 3 As shown, the motor housing 1 is provided with an inner ring positioning groove 27 and an outer ring positioning groove 28. The inner ring heat-conducting contouring lower seat 7 is provided with a first positioning side block 29, the inner ring heat-conducting contouring upper seat 12 is provided with a second positioning side block 30, the outer ring heat-conducting contouring lower seat 17 is provided with a third positioning side block 31, and the outer ring heat-conducting contouring upper seat 22 is provided with a fourth positioning side block 32.

[0073] In this embodiment, the first positioning side block 29 and the second positioning side block 30 are slidably engaged with the inner ring positioning groove 27, and the first positioning side block 29 and the second positioning side block 30 are abuttingly engaged with each other. The third positioning side block 31 and the fourth positioning side block 32 are slidably engaged with the outer ring positioning groove 28, and the third positioning side block 31 and the fourth positioning side block 32 are abuttingly engaged with each other. During the installation process, accurate positioning can be ensured. When assembling with the motor core 2 and the motor winding 3, its structure will not rotate or slide, and its stability is strong.

[0074] In this embodiment 2, ceramic balls of different sizes are filled into different areas within the motor housing 1. Larger spaces are filled with larger ceramic balls, and smaller spaces are filled with smaller ceramic balls. The inner ring thermally conductive contouring lower seat 7, the inner ring thermally conductive contouring upper seat 12, the outer ring thermally conductive contouring lower seat 17, and the outer ring thermally conductive contouring upper seat 22 are contouring structures customized for different area sizes, which facilitates the wrapping of ceramic balls of different sizes. At the same time, since the assembly of the contouring blocks is complex, the contouring structure is equivalent to wrapping the ceramic balls in a soft package and inserting them into specific areas, making installation easier and not affecting the injection of potting compound, thus achieving a better heat conduction and heat dissipation effect.

[0075] The working principle of this invention is:

[0076] During use, based on the gap between the motor core 2 and motor winding 3 and the contoured mounting chamber, the lower structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are first placed inside the contoured mounting chamber. Then, the motor core 2 and motor winding 3 are installed into the contoured mounting chamber. Next, the upper structures of the inner ring heat-conducting contoured component 5 and the outer ring heat-conducting contoured component 6 are fixed to their lower structures. This detachable structure fully fills the gap between the motor core 2 and motor winding 3 and the contoured mounting chamber, and with the addition of potting compound, heat dissipation capacity is improved, dead zones for heat dissipation are reduced, and the impact of space size on heat conduction is minimized. This significantly increases the floor space occupied by the heat dissipation structure, thereby greatly improving heat dissipation efficiency and making it highly practical.

[0077] The inner ring heat-conducting contoured lower seat 7 tightly fits the lower part of the inner ring of the motor core 2 and the motor winding 3, employing a contoured structure for heat conduction and dissipation. The inner ring heat-conducting contoured lower seat 7 is made of thermally conductive and insulating material. During material selection, alumina and aluminum nitride were deemed feasible. Additionally, based on research into material properties and reasonable deduction, materials such as diamond are also viable. The first filling heat-conducting part 8 adopts an internal filling structure, which, combined with the contoured structure, maximizes the proportion of heat dissipation elements per unit area, significantly improving heat dissipation efficiency.

[0078] Specifically, the colloid used is ZB3231 colloid, produced by Nanjing Zhongbei New Material Technology Co., Ltd. The main components of this colloid are epoxy resin, inorganic filler, curing agent, and plasticizer. The inorganic filler is an inorganic thermally conductive powder with a particle size of less than 20μm. Experiments have verified that this colloid has a thermal conductivity of 0.7W / mK, an insulation strength of 18kV / mm, and can withstand a high temperature of 180℃ after curing.

[0079] The inner ring heat-conducting contour upper seat 12 tightly fits the upper part of the inner ring of the motor core 2 and the motor winding 3, employing a contour structure for heat conduction and dissipation. The inner ring heat-conducting contour upper seat 12 is made of thermally conductive and insulating material. Alumina and aluminum nitride were selected as feasible materials during the material selection process. Additionally, based on research into material properties and reasonable deduction, materials such as diamond are also feasible. The inner ring heat-conducting contour upper seat 12 and the inner ring heat-conducting contour lower seat 7 are fixed together by a shaft and adhesive, employing a detachable structure for simple and convenient installation, and providing good fixing effect and tightness.

[0080] The upper outer ring heat-conducting conformal seat 22 tightly fits the upper part of the outer ring of the motor core 2 and the motor winding 3. This conformal structure facilitates heat conduction and dissipation. The upper outer ring heat-conducting conformal seat 22 is made of thermally conductive and insulating material; alumina and aluminum nitride were selected as suitable materials. The upper outer ring heat-conducting conformal seat 22 and the lower outer ring heat-conducting conformal seat 17 are fixed together by a shaft and adhesive, employing a detachable structure. This design allows for simple and convenient installation, and provides good fixing and tightness.

[0081] The first positioning side block 29 and the second positioning side block 30 are slidably engaged with the inner ring positioning groove 27, and the first positioning side block 29 and the second positioning side block 30 are abutting with each other. The third positioning side block 31 and the fourth positioning side block 32 are slidably engaged with the outer ring positioning groove 28, and the third positioning side block 31 and the fourth positioning side block 32 are abutting with each other. During installation, accurate positioning can be ensured. When assembled with the motor core 2 and the motor winding 3, its structure will not rotate or slide, and its stability is strong.

[0082] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0083] Although this article frequently uses terms such as motor housing 1, motor core 2, motor winding 3, detachable contoured heat-conducting assembly 4, inner ring heat-conducting contouring component 5, outer ring heat-conducting contouring component 6, inner ring heat-conducting contouring lower seat 7, first filling heat-conducting part 8, first filling space 9, first ceramic ball 10, first potting filling channel 11, inner ring heat-conducting contouring upper seat 12, second filling heat-conducting part 13, second filling space 14, second ceramic ball 15, second potting filling channel 16, outer ring heat-conducting contouring lower seat 1 7. Terms such as third filling heat-conducting part 18, third filling space 19, third ceramic ball 20, third potting filling channel 21, outer ring heat-conducting contour seat 22, fourth filling heat-conducting part 23, fourth filling space 24, fourth ceramic ball 25, fourth potting filling channel 26, inner ring positioning groove 27, outer ring positioning groove 28, first positioning side block 29, second positioning side block 30, third positioning side block 31, and fourth positioning side block 32 are used, but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A heat-conducting structure for an electric motor, comprising a motor housing (1), wherein a motor core (2) and motor windings (3) are disposed within the motor housing (1), characterized in that, The motor housing (1) is provided with a contoured mounting chamber, the motor core (2) and the motor winding (3) are located in the contoured mounting chamber, the contoured mounting chamber is provided with a detachable contoured heat conduction component (4), and the motor core (2) and the motor winding (3) are respectively in close contact with the detachable contoured heat conduction component (4); The detachable contour heat-conducting assembly (4) includes an inner ring heat-conducting contour part (5) and an outer ring heat-conducting contour part (6) disposed in the contour placement chamber, and the motor core (2) is located between the inner ring heat-conducting contour part (5) and the outer ring heat-conducting contour part (6). The inner ring thermally conductive contouring component (5) includes an inner ring thermally conductive contouring lower seat (7) disposed in the contouring placement chamber. The inner ring thermally conductive contouring lower seat (7) is made of thermally conductive insulating material. The inner ring thermally conductive contouring lower seat (7) is provided with a first filling thermally conductive part (8). The first filling thermally conductive part (8) includes a first filling space (9) disposed in the inner ring thermally conductive contouring lower seat (7). The first filling space (9) is provided with a plurality of first ceramic balls (10). The first ceramic balls (10) and the inner ring thermally conductive contouring lower seat (7) are filled with potting compound. The bottom of the inner ring thermally conductive contouring lower seat (7) is provided with a first potting filling channel (11). The first potting filling channel (11) is connected to the first filling space (9). The contouring cavity is provided with an inner ring heat-conducting contouring upper seat (12). The inner ring heat-conducting contouring upper seat (12) and the inner ring heat-conducting contouring lower seat (7) are fixed by a shaft and a fixing adhesive. The inner ring end of the motor winding (3) is located between the inner ring heat-conducting contouring upper seat (12) and the inner ring heat-conducting contouring lower seat (7). The inner ring heat-conducting contouring upper seat (12) is provided with a second filling heat-conducting part (13). The second filling heat-conducting part (13) includes a second filling space (14) disposed in the inner ring heat-conducting contouring upper seat (12). The second filling space (14) is provided with a plurality of second ceramic balls (15). The second ceramic balls (15) and the inner ring heat-conducting contouring upper seat (12) are filled with potting adhesive. The top of the inner ring heat-conducting contouring upper seat (12) is provided with a second potting filling channel (16). The second potting filling channel (16) is connected to the second filling space (14). The outer ring thermally conductive contouring component (6) includes an outer ring thermally conductive contouring lower seat (17) disposed in the contouring placement chamber. The outer ring thermally conductive contouring lower seat (17) is made of thermally conductive insulating material. The outer ring thermally conductive contouring lower seat (17) is provided with a third filling thermally conductive part (18). The third filling thermally conductive part (18) includes a third filling space (19) disposed in the outer ring thermally conductive contouring lower seat (17). The third filling space (19) is provided with a plurality of third ceramic balls (20). The third ceramic balls (20) and the outer ring thermally conductive contouring lower seat (17) are filled with potting compound. The bottom of the outer ring thermally conductive contouring lower seat (17) is provided with a third potting filling channel 21. The third potting filling channel 21 is connected to the third filling space (19). The contouring cavity is provided with an outer ring heat-conducting contouring upper seat (22). The outer ring heat-conducting contouring upper seat (22) and the outer ring heat-conducting contouring lower seat (17) are fixed by a shaft and a fixing adhesive. The outer ring end of the motor winding (3) is located between the outer ring heat-conducting contouring upper seat (22) and the outer ring heat-conducting contouring lower seat (17). The outer ring heat-conducting contouring upper seat (22) is provided with a fourth filling heat-conducting part (23). The fourth filling heat-conducting part (23) includes a fourth filling space (24) set in the outer ring heat-conducting contouring upper seat (22). The fourth filling space (24) is provided with a plurality of fourth ceramic balls (25). The fourth ceramic balls (25) and the outer ring heat-conducting contouring upper seat (22) are filled with potting adhesive. The top of the outer ring heat-conducting contouring upper seat (22) is provided with a fourth potting filling channel 26. The fourth potting filling channel 26 is connected to the fourth filling space (24).

2. The motor heat-conducting structure according to claim 1, characterized in that, The motor housing (1) is provided with an inner ring positioning groove (27) and an outer ring positioning groove (28). The inner ring heat-conducting contouring lower seat (7) is provided with a first positioning side block (29). The inner ring heat-conducting contouring upper seat (12) is provided with a second positioning side block (30). The outer ring heat-conducting contouring lower seat (17) is provided with a third positioning side block (31). The outer ring heat-conducting contouring upper seat (22) is provided with a fourth positioning side block (32). The first positioning side block (29) and the second positioning side block (30) are respectively slidably engaged with the inner ring positioning groove (27) and abutting with each other. The third positioning side block (31) and the fourth positioning side block (32) are respectively slidably engaged with the outer ring positioning groove (28) and abutting with each other.

3. The motor heat-conducting structure according to claim 1, characterized in that, The inner ring heat-conducting contoured lower seat (7) is made of solid ceramic material, and potting compound is filled between the inner ring heat-conducting contoured lower seat (7) and the motor winding (3).

4. The motor heat-conducting structure according to claim 1, characterized in that, The inner ring heat-conducting contour upper seat (12) is made of solid ceramic material, and potting compound is filled between the inner ring heat-conducting contour upper seat (12) and the motor winding (3).

5. The motor heat-conducting structure according to claim 1, characterized in that, The outer ring heat-conducting contoured lower seat (17) is made of solid ceramic material, and potting compound is filled between the outer ring heat-conducting contoured lower seat (17) and the motor winding (3).

6. The motor heat-conducting structure according to claim 1, characterized in that, The outer ring heat-conducting contour upper seat (22) is made of solid ceramic material, and potting compound is filled between the outer ring heat-conducting contour upper seat (22) and the motor winding (3).

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