A three-phase magnetic integrated inductor

Abstract

The present application relates to the field of inductors, and in particular to a three-phase magnetic integrated inductor. It includes a base, an aluminum shell, a magnetic core assembly and a coil assembly, wherein the magnetic core assembly is composed of a plurality of side columns and a middle column, and is provided with a plurality of winding columns; the coil assembly includes six groups of coils, which are respectively wound on each winding column and extend from the bottom of the base. This design effectively improves the heat dissipation performance and electromagnetic compatibility of the inductor by optimizing the structural layout and material selection, while reducing the manufacturing cost and assembly difficulty, and ensuring the stability and reliability of the product.

Description

Technical Field

[0001] The present application relates to the field of inductor technology, and in particular to a three-phase magnetic integrated inductor. Background Art

[0002] Inductors are an indispensable and important component in modern electrical and electronic equipment, especially in the fields of new energy vehicle onboard charging systems, power conversion systems, and industrial automation control. These applications have extremely strict requirements on inductors, requiring not only efficient energy transmission and stable current control, but also good heat dissipation performance and high reliability. With the development of technology, three-phase magnetic integrated inductors have gradually become one of the key components to improve the overall performance of the system.

[0003] In order to achieve efficient energy transmission and stable current control, existing three-phase magnetic integrated inductors usually use a single core material and a simple structural design. Common design solutions include: using a standard manganese-zinc ferrite core, making a coil by traditional winding methods, and simply assembling the various components together. Although traditional solutions have solved basic functional requirements to a certain extent, they still face many challenges in practical applications. Among them, in high-vibration environments such as vehicles, due to the lack of special fixing and anti-seismic structures, the reliability of the product is significantly reduced, and it is difficult to meet the harsh working conditions in the automotive field. In high-temperature environments, due to the lack of effective heat dissipation design, the product temperature rises, seriously affecting the service life and stability of use. Summary of the invention

[0004] The purpose of this application is to provide a three-phase magnetic integrated inductor to improve the stability and reliability of product use.

[0005] The three-phase magnetic integrated inductor provided in this application adopts the following technical solution: A three-phase magnetic integrated inductor comprises a base, an aluminum shell, a magnetic core assembly and a coil assembly, wherein the base and the aluminum shell are mutually clamped and fixed, and the magnetic core assembly comprises a first side column, a first middle column, a second middle column and a second side column installed on the base, wherein the first side column, the first middle column, the second middle column and the second side column have the same spacing and are mutually parallel; The magnetic core assembly further includes a first winding post and a second winding post connected between the first side post and the first middle post, a third winding post and a fourth winding post connected between the first middle post and the second middle post, and a fifth winding post and a sixth winding post connected between the second middle post and the second side post, wherein the first winding post and the second winding post are parallel to each other, the third winding post and the fourth winding post are parallel to each other, and the fifth winding post and the sixth winding post are parallel to each other; The coil assembly includes a first coil, a second coil, a third coil, a fourth coil, a fifth coil and a sixth coil respectively wound around the outside of a first winding pole, a second winding pole, a third winding pole, a fourth winding pole, a fifth winding pole and a sixth winding pole, and one end of the first coil, the second coil, the third coil, the fourth coil, the fifth coil and the sixth coil extends from the bottom of the base.

[0006] By adopting the above technical solution, the three-phase magnetic integrated inductor of the present application ensures the stability and vibration resistance of the product through the mutual clamping and fixing method of the base and the aluminum shell in the structural design, so that the product is more suitable for high-vibration environments such as vehicles. The six winding poles and their corresponding coil assemblies are arranged reasonably, which helps to disperse heat. One end of all coils extends from the bottom of the base and is arranged in an orderly manner through the coil receiving holes, which is convenient for connection with the circuit board and simplifies the installation process, thereby improving the overall performance and scope of application of the product, and improving the stability and reliability of product use.

[0007] Preferably, spacers are provided between the first coil and the second coil and the first side column, between the first coil and the second coil and the first middle column, between the third coil and the fourth coil and the first middle column, between the third coil and the fourth coil and the second middle column, between the fifth coil and the sixth coil and the second middle column, and between the fifth coil and the sixth coil and the second side column.

[0008] By adopting the above technical solution, the present application significantly improves the insulation performance of the inductor through the provision of the spacer, especially in vehicle-mounted conditions, it can prevent the risk of short circuit between the coil and the magnetic core, and improve the safety and reliability of the product. At the same time, the presence of the spacer helps to reduce electromagnetic interference between coils, further improving the stability of the product.

[0009] Preferably, high temperature tape is provided on the top of the first side column, the second side column, the first middle column and the second middle column.

[0010] By adopting the above technical solution, the present application effectively improves the insulation performance of the inductor through the setting of the high temperature tape, which is particularly suitable for vehicle-mounted working conditions to prevent short circuits at extreme temperatures. In addition, the high temperature tape also enhances the weather resistance and reliability of the product, ensuring long-term stable operation in complex environments.

[0011] Preferably, the magnetic core assembly is made of iron-silicon alloy material.

[0012] By adopting the above technical solution, the magnetic core made of iron-silicon alloy material used in this application can significantly reduce magnetic loss and increase saturation magnetic flux density, and can meet the temperature rise control requirements under high current operation without additional adjustment of the air gap. This not only prolongs the product life and reduces the maintenance frequency, but also shows higher reliability and stability under vehicle-mounted application conditions.

[0013] Preferably, the base is provided with three injection holes at fixed intervals, and the injection holes are used to fill the internal gaps between the aluminum shell and the base with thermally conductive silicone. By adopting the above technical solution, the present application can fill all the gaps between the aluminum shell and the base by setting injection holes to inject thermally conductive silicone, thereby forming a continuous heat conduction path, effectively conducting and dispersing heat, thereby significantly reducing the temperature rise of the inductor during operation and improving the heat dissipation performance of the product. At the same time, the thermally conductive silicone has excellent waterproof, dustproof and shockproof properties. By fully covering the internal space to form a sealed protective layer, it prevents the influence of external environmental factors on the internal structure of the inductor, thereby improving the reliability and durability of the product. By setting fixed injection holes, the uniform distribution and full filling of the thermally conductive silicone can be ensured, reducing the difficulty and time of operation during the assembly process, and improving production efficiency.

[0014] Preferably, the four corners of the base are provided with side column fixing members, and the side column fixing members are used to fix the first side column and the second side column; Four center column fixing members are arranged at fixed intervals on both sides of the base, and the center column fixing members are used to fix the first center column and the second center column.

[0015] By adopting the above technical solution, the present application can effectively fix the first side column, the second side column, the first middle column and the second middle column through the design of the side column fixing member and the middle column fixing member, thereby ensuring the stability and mechanical strength of the magnetic core assembly. This design not only enhances the impact resistance of the product, but also improves reliability and safety in a vehicle-mounted environment. In particular, the way in which the side column fixing member and the middle column fixing member are inserted into the spacers further strengthens the connection between the components, prevents loosening and falling off, and ensures stability during long-term operation.

[0016] Preferably, the width of the spacer is greater than the width of the first side column, the first middle column, the second middle column and the second side column, and the side column fixing member and the middle column fixing member are inserted between the spacers to fix the first side column, the first middle column, the second middle column and the second side column to the base.

[0017] By adopting the above technical solution, the width of the spacer of the present application is greater than the width of the first side column, the first middle column, the second middle column and the second side column, which can better isolate the interference between the components and improve the insulation performance. The side column fixing piece and the middle column fixing piece are inserted between the spacers, so that the first side column, the first middle column, the second middle column and the second side column are firmly fixed to the base, which enhances the stability and impact resistance of the overall structure, and is particularly suitable for high vibration and high strength working conditions in the vehicle environment.

[0018] Preferably, a fixing column is provided on the top of the side column fixing piece, and fixing holes are provided at four corners inside the aluminum shell, and the fixing column is used to be inserted into the fixing hole so that the aluminum shell and the base are clamped and fixed to each other.

[0019] By adopting the above technical solution, the fixing column set on the top of the side column fixing member of the present application can be accurately inserted into the fixing holes at the four corners of the aluminum shell to achieve a stable clamping fixation between the aluminum shell and the base. This design not only enhances the mechanical strength and impact resistance of the product, but also simplifies the assembly process and improves production efficiency. At the same time, the firm fixing method ensures that the product can withstand vibration and impact in the vehicle environment, extending its service life.

[0020] Preferably, the base is provided with six coil accommodating holes at fixed intervals, and the first coil, the second coil, the third coil, the fourth coil, the fifth coil and the sixth coil extend from the bottom of the base through the coil accommodating holes.

[0021] By adopting the above technical solution, the present application realizes the orderly arrangement and extraction of the coils, ensures good insulation and non-interference between the coils of each phase, and facilitates the assembly and maintenance of the product. The design of the coil receiving hole simplifies the manufacturing process, improves production efficiency, and ensures the reliability and stability of the product during use.

[0022] Preferably, the bottom of the base is provided with six screw holes at a fixed interval, and the screw holes are used to fix the base to the circuit board. By adopting the above technical solution, the six screw holes provided at the bottom of the base of the present application can achieve a stable connection with the circuit board, greatly enhancing the mechanical strength and impact resistance of the product, and is particularly suitable for working conditions with frequent vibrations in a vehicle environment. This design effectively prevents the product from loosening or falling off due to vibration, and improves the reliability and safety of the system.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. By introducing the design of full vacuum potting thermal conductive silicone to cover the gaps of the entire product, the heat dissipation efficiency is greatly improved, the temperature rise is reduced, thereby extending the product life and reducing the maintenance frequency; 2. The outer aluminum shell structure is designed and fixed to the PCB board through multiple screw holes, which enhances the mechanical strength and impact resistance, making the product more reliable in the vehicle environment and not easily damaged by vibration; 3. Iron-silicon alloy is selected as the core material. This material has low core loss and high saturation flux density. It can meet the temperature rise control requirements under high current operation without additional adjustment of the air gap, achieving a balance between high performance and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a schematic diagram of the internal structure of Example 1 of the present application; Figure 3 is a schematic structural diagram of a magnetic core assembly according to Embodiment 1 of the present application; Figure 4 is a schematic diagram of the base structure of Example 1 of the present application; Figure 5 is a schematic diagram of the aluminum shell structure of Example 1 of the present application; In the figure, 1. base; 11. pouring hole; 12. side column fixing piece; 13. middle column fixing piece; 14. fixing column; 15. coil accommodating hole; 16. screw hole; 2. aluminum shell; 21. fixing hole; 3. magnetic core assembly; 311. first side column; 312. first middle column; 313. second middle column; 314. second side column; 321. first winding column; 322. second winding column; 323. third winding column; 324. fourth winding column; 325. fifth winding column; 326. sixth winding column; 4. coil assembly; 41. first coil; 42. second coil; 43. third coil; 44. fourth coil; 45. fifth coil; 46. sixth coil; 5. spacer; 6. high temperature tape. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 -Attached Figure 5 , the technical solution of this application is clearly and completely described, and the described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0026] The inventor of the present application found that the existing three-phase magnetic integrated inductor usually adopts a single magnetic core material and a simple structural design, lacks effective heat dissipation and fixing measures, resulting in the product being easily damaged in a high temperature environment, having reduced reliability in a vehicle vibration environment, and being difficult to meet the harsh working conditions in the vehicle field. Therefore, the three-phase magnetic integrated inductor provided in the embodiment of the present application has achieved the effect of significantly improving the insulation performance of the inductor, improving the heat dissipation capacity and three-proof level of the product, and reducing the temperature rise, greatly enhancing the product's impact resistance in a vehicle environment.

[0027] Embodiment 1: like Figure 1 and Figure 2As shown, the three-phase magnetic integrated inductor of the embodiment of the present application includes a base 1, an aluminum shell 2, a magnetic core assembly 3 and a coil assembly 4. The base 1 and the aluminum shell 2 are fixed to each other by clamping, ensuring the overall structural stability and impact resistance of the product. The magnetic core assembly 3 includes a first side column 311, a first middle column 312, a second middle column 313 and a second side column 314 installed on the base 1. The first side column 311, the first middle column 312, the second middle column 313 and the second side column 314 have the same spacing and are parallel to each other, ensuring the uniform distribution of the magnetic field.

[0028] like Figure 2 and Figure 3 As shown, the magnetic core component 3 of the embodiment of the present application also includes a first winding post 321 and a second winding post 322 connected between the first side post 311 and the first middle post 312, a third winding post 323 and a fourth winding post 324 connected between the first middle post 312 and the second middle post 313, and a fifth winding post 325 and a sixth winding post 326 connected between the second middle post 313 and the second side post 314, wherein the first winding post 321 and the second winding post 322 are parallel to each other, the third winding post 323 and the fourth winding post 324 are parallel to each other, and the fifth winding post 325 and the sixth winding post 326 are parallel to each other, ensuring the balanced distribution of current between the phases. The magnetic core component 3 is made of iron-silicon alloy material, which has low magnetic loss and high saturation magnetic flux density, can effectively reduce temperature rise, does not need to adjust the air gap to meet the current demand, and improves the working efficiency of the inductor.

[0029] like Figure 2 As shown, the coil assembly 4 of the embodiment of the present application includes a first coil 41, a second coil 42, a third coil 43, a fourth coil 44, a fifth coil 45 and a sixth coil 46 respectively wound around the first winding post 321, the second winding post 322, the third winding post 323, the fourth winding post 324, the fifth winding post 325 and the sixth winding post 326. One end of the first coil 41, the second coil 42, the third coil 43, the fourth coil 44, the fifth coil 45 and the sixth coil 46 extends from the bottom of the base 1 to facilitate connection with other circuit components.

[0030] like Figure 2As shown, in order to further enhance the insulation performance, a spacer 5 is provided between the first coil 41 and the second coil 42 and the first side column 311, between the first coil 41 and the second coil 42 and the first middle column 312, between the third coil 43 and the fourth coil 44 and the first middle column 312, between the third coil 43 and the fourth coil 44 and the second middle column 313, between the fifth coil 45 and the sixth coil 46 and the second middle column 313, and between the fifth coil 45 and the sixth coil 46 and the second side column 314. In the specific implementation process, the spacer 5 can be made of polyimide film or ceramic material, both of which have excellent high temperature resistance and insulation performance, and can maintain good electrical safety in a complex and changeable vehicle environment.

[0031] like Figure 2 As shown, the first side column 311, the second side column 314, the first middle column 312 and the second middle column 313 of the embodiment of the present application are provided with high temperature tape 6. The high temperature tape 6 can be made of fluororubber or modified epoxy resin material, which can not only maintain adhesion at high temperatures, but also prevent water vapor and dust from entering, thereby improving the protection level of the product.

[0032] like Figure 2 and Figure 4 As shown, the four corners of the base 1 of the present embodiment are provided with side column fixing members 12 for fixing the first side column 311 and the second side column 314; four middle column fixing members 13 are provided at fixed intervals on both sides of the base 1 for fixing the first middle column 312 and the second middle column 313. The side column fixing members 12 and the middle column fixing members 13 can be made of stainless steel or aluminum alloy materials, which have high strength and corrosion resistance and can maintain the fixing effect for a long time.

[0033] like Figure 2 and Figure 4 As shown, the width of the spacer 5 in the embodiment of the present application is greater than the width of the first side column 311, the first middle column 312, the second middle column 313 and the second side column 314, and the side column fixing member 12 and the middle column fixing member 13 are inserted between the spacer 5 to fix the first side column 311, the first middle column 312, the second middle column 313 and the second side column 314 to the base 1. Such a design ensures the stability and reliability of the magnetic core assembly 3.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the base 1 of the embodiment of the present application is provided with three injection holes 11 at a fixed interval, which are used to inject thermal conductive silicone into the internal gaps of the aluminum shell 2 and the base 1. The thermal conductive silicone can be selected from two-component addition-type organic silicone gel or epoxy resin filled with thermal conductive fillers. Both materials have good fluidity and thermal conductivity, can effectively fill the internal gaps, and promote uniform heat conduction.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, the base 1 of the embodiment of the present application is provided with six coil accommodating holes 15 at a fixed interval, and the first coil 41, the second coil 42, the third coil 43, the fourth coil 44, the fifth coil 45 and the sixth coil 46 extend from the bottom of the base 1 through the coil accommodating holes 15. The design of the coil accommodating holes 15 simplifies the wiring process and improves production efficiency.

[0036] like Figure 1 As shown, the bottom of the base 1 of the embodiment of the present application is provided with six screw holes 16 at a fixed interval, and the screw holes 16 are used to fix the base 1 to the circuit board. The design of the screw holes 16 enables the product to be firmly mounted on the circuit board, thereby enhancing the mechanical stability of the product.

[0037] like Figure 4 and Figure 5 As shown, the top of the side column fixing member 12 of the embodiment of the present application is provided with a fixing column 14, and the four corners of the aluminum shell 2 are provided with fixing holes 21, and the fixing column 14 is used to be inserted into the fixing hole 21 so that the aluminum shell 2 and the base 1 are mutually clamped and fixed. The matching design of the fixing column 14 and the fixing hole 21 increases the connection strength between the aluminum shell 2 and the base 1, and also facilitates production and assembly.

[0038] The implementation principle of this embodiment is as follows: by introducing the spacer 5 and the high-temperature tape 6, the insulation performance of the inductor is significantly improved, which is particularly suitable for vehicle-mounted working conditions. The full vacuum encapsulation thermal conductive silicone process greatly improves the heat dissipation capacity and three-proof level of the product. The use of iron-silicon alloy as the core material reduces magnetic loss and improves the saturation flux density. It can meet large current requirements without additional adjustment of the air gap and reduces temperature rise. The reinforcement measures combining special composite material structural parts and the outer aluminum shell 2 greatly enhance the impact resistance of the product in a vehicle-mounted environment. This series of innovative designs work together to greatly improve the comprehensive performance of the three-phase magnetic integrated inductor, so that it still performs well under harsh conditions such as high temperature and vibration, extending product life and reducing maintenance frequency.

[0039] Example 2 The difference between this embodiment and the above embodiment is that: In addition to polyimide film and ceramic materials, fiberglass reinforced plastic (FRP) can also be selected for the spacer 5. FRP has the characteristics of light weight and high strength, which can reduce the overall weight without affecting the insulation performance, and is suitable for application scenarios with high requirements for weight reduction.

[0040] In terms of the choice of thermally conductive silicone, in addition to two-component addition-type silicone gel and epoxy resin filled with thermally conductive fillers, you can also choose graphene-based thermally conductive silicone grease. Graphene-based thermally conductive silicone grease has a higher thermal conductivity coefficient and can more effectively transfer internal heat to the outside, further improving the heat dissipation effect.

[0041] In the design of fixings, in addition to stainless steel and aluminum alloy materials, carbon fiber reinforced plastic (CFRP) can also be selected. CFRP not only has extremely high strength and rigidity, but also has light weight, which is suitable for applications with high requirements for mechanical strength and light weight.

[0042] In the cooperation between the fixing column 14 and the fixing hole 21, the reliability and convenience of fixing can be further improved by adding a self-locking thread design. The self-locking thread design can make the fixing column 14 automatically lock after being inserted into the fixing hole 21, reducing the risk of loosening.

[0043] In the selection of the material of the base 1, PPS material is usually selected. PPS material (polyphenylene sulfide) has the following main advantages: High mechanical strength. PPS has excellent mechanical strength. Its tensile strength, bending strength and other indicators are at a high level among engineering plastics, which enables PPS to withstand greater pressure and wear and is suitable for various harsh working environments. Excellent thermal stability. The melting point of PPS exceeds 280°C, the heat deformation temperature exceeds 260°C, and it can withstand high temperatures of 260°C in a short period of time, and the long-term use temperature can reach 200-220°C. In a high temperature environment, PPS can still maintain good performance and is an ideal material for a high temperature working environment. Good electrical insulation. PPS has excellent electrical insulation properties, low dielectric constant and dielectric loss tangent, and small changes in a large frequency, temperature and humidity range. This makes PPS widely used in the field of electronics and electrical appliances to manufacture insulating materials, such as the insulating layer of wires and cables, and the packaging materials of electronic components. ‌Chemical corrosion resistance‌, PPS has good chemical corrosion resistance below 200°C and can be used in various high humidity and chemical environments‌. ‌Flammability‌, PPS has good flame retardancy and can reach UL94 V-0 level without adding flame retardants, and has excellent flame retardancy‌. ‌Good wear resistance and creep resistance‌, PPS has high rigidity, high wear resistance and excellent creep resistance, and can maintain stable performance in long-term use‌. ‌Good dimensional stability‌, during high-temperature processing, PPS material is not easy to shrink or deform due to high temperature, ensuring the dimensional accuracy and quality stability of the product‌. The above advantages make PPS material more suitable for the automotive field.

[0044] The implementation principle of this embodiment is: through the diversified selection of materials for the spacer 5, thermal conductive silicone, fixings and base 1, the various performance indicators of the three-phase magnetic integrated inductor are further optimized. In particular, by introducing lightweight high-strength materials and high-efficiency thermal conductive materials, not only the mechanical properties and heat dissipation effect of the product are improved, but also lightweight design is achieved to a certain extent, broadening the scope of application. These improvement measures work together to enable the three-phase magnetic integrated inductor to perform excellent performance in a variety of harsh environments, meeting the needs of different application scenarios.

[0045] Example 3 The difference between this embodiment and the above embodiment is that: In the selection of core materials, in addition to iron-silicon alloys, nanocrystalline soft magnetic materials can also be considered. Nanocrystalline soft magnetic materials have lower core loss and higher saturation flux density, can maintain excellent magnetic properties under high-frequency conditions, and are suitable for application scenarios with high requirements for high-frequency response.

[0046] In terms of coil material selection, in addition to iron-silicon alloy, copper-clad aluminum wire can also be considered. Copper-clad aluminum wire combines the good conductivity of copper and the lightness of aluminum, which not only ensures the current transmission efficiency but also reduces the overall weight. It is suitable for applications with high requirements for both lightness and low resistivity.

[0047] In the design of fixings, in addition to stainless steel and aluminum alloy materials, titanium alloy materials can also be selected. Titanium alloy has extremely high specific strength and corrosion resistance, and is suitable for application scenarios with high requirements for durability and corrosion resistance.

[0048] In terms of the choice of thermal conductive silicone, in addition to two-component addition-type silicone gel and epoxy resin filled with thermal conductive fillers, you can also choose metal-based thermal conductive paste. Metal-based thermal conductive paste has a higher thermal conductivity and stronger adhesion, can better fill small gaps, and improve heat dissipation efficiency.

[0049] The implementation principle of this embodiment is: through the diversified selection of magnetic core materials, coil materials, fixings, and thermal conductive silicone, the performance parameters of the three-phase magnetic integrated inductor are further optimized. In particular, by introducing high-performance magnetic core materials and thermal conductive materials, not only the magnetic properties and heat dissipation effect of the product are improved, but also lightweight design is achieved to a certain extent, and the scope of application is broadened. These improvement measures work together to enable the three-phase magnetic integrated inductor to perform excellent performance in a variety of harsh environments such as high frequency and high temperature, meeting the needs of different application scenarios.

[0050] Example 4 The difference between this embodiment and the above embodiment is that: In addition to polyimide film and ceramic material, aramid paper can also be selected for the separator 5. Aramid paper has good high temperature resistance and insulation performance, and is soft and easy to process, and is suitable for application scenarios with high requirements for flexibility and processability.

[0051] In terms of the selection of thermally conductive silicone, in addition to two-component addition-type silicone gel and epoxy resin filled with thermally conductive fillers, you can also choose boron nitride-based thermal pads. Boron nitride-based thermal pads have high thermal conductivity and good electrical insulation properties, and can maintain stable thermal conductivity at high temperatures, and are suitable for applications with high requirements for electrical isolation.

[0052] In the design of fixings, in addition to stainless steel and aluminum alloy materials, magnesium alloy materials can also be selected. Magnesium alloy has extremely high specific strength and good vibration reduction performance, and is suitable for application scenarios with high requirements for vibration reduction and lightweight.

[0053] The implementation principle of this embodiment is: through the diversified selection of spacers 5, thermal conductive silicone, and fixings, the performance parameters of the three-phase magnetic integrated inductor are further optimized. In particular, by introducing high-performance insulating materials and thermal conductive materials, not only the insulation performance and heat dissipation effect of the product are improved, but also lightweight design is achieved to a certain extent, and the scope of application is broadened. These improvement measures work together to enable the three-phase magnetic integrated inductor to perform excellent performance in a variety of harsh environments, meeting the needs of different application scenarios.

[0054] Example 5 The difference between this embodiment and the above embodiment is that: In the selection of core materials, in addition to iron-silicon alloys, cobalt-based alloys can also be considered. Cobalt-based alloys have lower core losses and higher saturation flux density, can maintain excellent magnetic properties at extreme temperatures, and are suitable for application scenarios with high requirements for wide temperature range operation.

[0055] In terms of coil material selection, in addition to iron-silicon alloy, silver-plated copper wire can also be considered. Silver-plated copper wire has higher conductivity and oxidation resistance, can maintain stable electrical performance during long-term operation, and is suitable for applications with high requirements for long life and high reliability.

[0056] In the design of fixings, in addition to stainless steel and aluminum alloy materials, nickel-based super alloys can also be selected. Nickel-based super alloys have extremely high heat resistance and corrosion resistance, and are suitable for application scenarios with high requirements for high temperature and corrosive environments.

[0057] In terms of the selection of thermally conductive silicone, in addition to two-component addition-type silicone gel and epoxy resin filled with thermally conductive fillers, you can also choose thermally conductive silicone grease filled with diamond particles. Thermally conductive silicone grease filled with diamond particles has extremely high thermal conductivity and good lubrication properties, and can maintain stable thermal conductivity at high temperatures. It is suitable for applications that require extremely high thermal conductivity.

[0058] The implementation principle of this embodiment is: through the diversified selection of magnetic core materials, coil materials, fixings, and thermal conductive silicone, the performance parameters of the three-phase magnetic integrated inductor are further optimized. In particular, by introducing high-performance magnetic core materials and thermal conductive materials, not only the magnetic properties and heat dissipation effect of the product are improved, but also lightweight design is achieved to a certain extent, broadening the scope of application. These improvement measures work together to enable the three-phase magnetic integrated inductor to perform excellent performance in a variety of harsh environments, meeting the needs of different application scenarios.

[0059] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A three-phase magnetic integrated inductor, characterized in that: The invention comprises a base (1), an aluminum shell (2), a magnetic core assembly (3) and a coil assembly (4); the base (1) and the aluminum shell (2) are mutually clamped and fixed; the magnetic core assembly (3) comprises a first side column (311), a first middle column (312), a second middle column (313) and a second side column (314) which are mounted on the base (1); the first side column (311), the first middle column (312), the second middle column (313) and the second side column (314) are spaced at the same distance and are mutually parallel; The magnetic core assembly (3) further comprises a first winding post (321) and a second winding post (322) connected between the first side post (311) and the first center post (312), a third winding post (323) and a fourth winding post (324) connected between the first center post (312) and the second center post (313), and a fifth winding post (325) and a sixth winding post (326) connected between the second center post (313) and the second side post (314); the first winding post (321) and the second winding post (322) are parallel to each other, the third winding post (323) and the fourth winding post (324) are parallel to each other, and the fifth winding post (325) and the sixth winding post (326) are parallel to each other; The coil assembly (4) comprises a first coil (41), a second coil (42), a third coil (43), a fourth coil (44), a fifth coil (45) and a sixth coil (46) which are respectively wound around the outside of a first winding post (321), a second winding post (322), a third winding post (323), a fourth winding post (324), a fifth winding post (325) and a sixth winding post (326); one end of the first coil (41), the second coil (42), the third coil (43), the fourth coil (44), the fifth coil (45) and the sixth coil (46) extends from the bottom of the base (1).

2. A three-phase magnetic integrated inductor according to claim 1, characterized in that: Spacers (5) are provided between the first coil (41) and the second coil (42) and the first side column (311), between the first coil (41) and the second coil (42) and the first middle column (312), between the third coil (43) and the fourth coil (44) and the first middle column (312), between the third coil (43) and the fourth coil (44) and the second middle column (313), between the fifth coil (45) and the sixth coil (46) and the second middle column (313), and between the fifth coil (45) and the sixth coil (46) and the second side column (314).

3. A three-phase magnetic integrated inductor according to claim 2, characterized in that: High temperature adhesive tapes (6) are provided on the tops of the first side column (311), the second side column (314), the first middle column (312) and the second middle column (313).

4. The three-phase magnetic integrated inductor according to claim 2, characterized in that: The magnetic core component (3) is made of an iron-silicon alloy material.

5. The three-phase magnetic integrated inductor according to claim 2, characterized in that: The base (1) is provided with three injection holes (11) at fixed intervals, and the injection holes (11) are used to inject thermally conductive silica gel into the internal gaps of the aluminum shell (2) and the base (1).

6. The three-phase magnetic integrated inductor according to claim 5, characterized in that: The four corners of the base (1) are each provided with a side column fixing member (12), and the side column fixing member (12) is used to fix the first side column (311) and the second side column (314); Four center column fixing members (13) are arranged at fixed intervals on both sides of the base (1), and the center column fixing members (13) are used to fix the first center column (312) and the second center column (313).

7. The three-phase magnetic integrated inductor according to claim 6, characterized in that: The width of the spacer (5) is greater than the width of the first side column (311), the first middle column (312), the second middle column (313) and the second side column (314); the side column fixing member (12) and the middle column fixing member (13) are inserted between the spacer (5) to fix the first side column (311), the first middle column (312), the second middle column (313) and the second side column (314) to the base (1).

8. The three-phase magnetic integrated inductor according to claim 6, characterized in that: A fixing column (14) is provided on the top of the side column fixing member (12), and fixing holes (21) are provided at four corners inside the aluminum shell (2). The fixing column (14) is used to be inserted into the fixing hole (21) so that the aluminum shell (2) and the base (1) are mutually clamped and fixed.

9. A three-phase magnetic integrated inductor according to any one of claims 1 to 8, characterized in that: The base (1) is provided with six coil accommodating holes (15) at fixed intervals, and the first coil (41), the second coil (42), the third coil (43), the fourth coil (44), the fifth coil (45) and the sixth coil (46) extend from the bottom of the base (1) through the coil accommodating holes (15).

10. A three-phase magnetic integrated inductor according to any one of claims 1 to 8, characterized in that: The bottom of the base (1) is provided with six screw holes (16) at fixed intervals, and the screw holes (16) are used to securely connect the base (1) to the circuit board.

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