Inductor

Abstract

The utility model provides an inductor which comprises a conductor group and a magnet shell. The conductor group comprises a first conductor and a second conductor overlapped with the first conductor, the second conductor is located on the inner circumference of the first conductor, and the first conductor is provided with a first pin and a second pin which are electrically connected; the second conductor is provided with a third pin and a fourth pin which are electrically connected; the magnet shell comprises a first magnet and a second magnet, one side of the first magnet is provided with a convex column and a containing groove surrounding the periphery of the convex column, the conductor set is contained in the containing groove, and the first pin, the second pin, the third pin and the fourth pin are all exposed out of the containing groove; the second magnet is in contact fit with the first magnet and shields the accommodating groove, and the conductor group is located between the first magnet and the second magnet. The inductor is simple in structure, a multi-electrode and multi-combination application form can be formed through the cooperation of a plurality of conductor groups and the magnet shell, the cost is reduced, and the space is saved.

Description

Technical Field

[0001] This utility model relates to an inductor and belongs to the field of inductor technology. Background Technology

[0002] With the development of AI technology, the market demand for inductors with low voltage, high current, and low DC resistance is increasing. However, the traditional method of fabricating integrally molded inductors using wire winding results in thick wire diameters and difficult bending, making the fabrication process cumbersome, especially for multi-electrode inductors. Furthermore, while existing TLVR coupled inductors offer fast transient response to help stabilize power supply output voltage and meet the power requirements of high-performance processors, TLVR coupled inductors cannot be fabricated in a single step for multiple electrodes and various application combinations, resulting in poor fabrication flexibility.

[0003] In view of this, it is indeed necessary to improve the existing inductors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an inductor with a simple structure that can be combined with multiple conductor groups and a magnetic shell to form multiple electrodes and multiple application forms, thereby reducing costs and saving space.

[0005] To achieve the above objectives, this utility model provides an inductor, comprising:

[0006] A conductor assembly includes a first conductor and a second conductor disposed overlapping the first conductor, the second conductor being located on the inner periphery of the first conductor; the first conductor has a first pin and a second pin electrically connected; the second conductor has a third pin and a fourth pin electrically connected.

[0007] The magnet housing includes a first magnet and a second magnet. One side of the first magnet is provided with a protrusion and a receiving groove surrounding the outer periphery of the protrusion. The conductor group is housed in the receiving groove, and the first pin, the second pin, the third pin and the fourth pin are all exposed in the receiving groove.

[0008] The second magnet contacts and engages with the first magnet, thus shielding the receiving groove, and the conductor assembly is located between the first magnet and the second magnet.

[0009] Optionally, the first conductor further includes a first body portion connecting the first pin and the second pin. The first body portion is n-shaped, and the first pin and the second pin are located at opposite ends of the first body portion and extend away from each other. The first body portion is accommodated in the receiving groove.

[0010] Optionally, the second conductor further includes a second body portion connecting the third pin and the fourth pin. The second body portion is n-shaped, with the third pin and the fourth pin located at opposite ends of the second body portion and extending toward each other. The second body portion is accommodated within the receiving groove and located on the inner periphery of the first body portion.

[0011] Optionally, the corner of the first conductor is chamfered, and the third and fourth pins are provided with an arc-shaped transition surface on the side near the first or second pin.

[0012] Optionally, the first conductor and the second conductor are fixedly connected relative to each other, and are electrically insulated from each other.

[0013] Optionally, the outer surface of the first main body is covered with a first insulating layer.

[0014] Optionally, the receiving groove is n-shaped and extends through the side of the first magnet, and the first pin, the second pin, the third pin and the fourth pin are all exposed on the same side of the first magnet and are spaced apart from each other.

[0015] Optionally, the first magnet is a rectangular columnar structure, and the second magnet is a plate-like structure, wherein the second magnet abuts against the protruding column and covers the receiving groove.

[0016] Optionally, the second magnet is arranged in a mirror image symmetrical to the first magnet, the first magnet and the second magnet are in contact with each other, and the two protrusions abut against each other, and the conductor group is housed in a receiving space surrounded by the two receiving grooves.

[0017] Optionally, multiple first magnets are arranged in a translational and stacked manner, with the multiple first magnets contacting and cooperating with each other. Each first magnet has a receiving groove containing the conductor group, and the second magnet is in contact with the top surface of the first magnet located at the top.

[0018] The beneficial effects of this invention are as follows: The inductor of this invention, by providing a protrusion on one side of the first magnet and a receiving groove surrounding the protrusion, accommodates the first conductor and a second conductor stacked with the first conductor within the receiving groove, with the first and second leads of the first conductor and the third and fourth leads of the second conductor exposed outside the receiving groove; and by using the second magnet, the conductor group is positioned between the first and second magnets. The inductor of this invention has a simple structure and can form multiple electrode and multiple combination application forms through the cooperation of multiple conductor groups and magnet shells, reducing costs and saving space. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural schematic diagram of the first embodiment of the inductor of this utility model.

[0020] Figure 2 This is an assembly diagram of the conductor group, the first magnet, and the second magnet in the first embodiment of the inductor of this utility model.

[0021] Figure 3 yes Figure 2 A three-dimensional structural diagram of the first conductor in the middle.

[0022] Figure 4 yes Figure 2 A three-dimensional structural diagram of the second conductor.

[0023] Figure 5 yes Figure 2 A three-dimensional structural diagram of the middle conductor assembly.

[0024] Figure 6 yes Figure 2 A three-dimensional structural diagram of the first magnet in the middle.

[0025] Figure 7 yes Figure 2 A schematic diagram of the three-dimensional structure of the second magnet.

[0026] Figure 8 This is a three-dimensional structural diagram of the third embodiment of the inductor of this utility model.

[0027] Figure 9 This is an assembly diagram of the conductor group, the first magnet, and the second magnet in the third embodiment of the inductor of this utility model.

[0028] Figure 10 yes Figure 1 Schematic diagram of the middle insulation layer.

[0029] Figure 11 yes Figure 1 A schematic diagram of the middle insulating layer and the electroplated layer.

[0030] Figure 12 yes Figure 8 A schematic diagram of the middle insulating layer and the electroplated layer.

[0031] Figure 13 This is a flowchart of the method for preparing the inductor of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please see Figures 1-12As shown, this utility model discloses an inductor 100. The inductor 100 includes a conductor group 10 and a magnet housing 20. The conductor group 10 includes a first conductor 11 and a second conductor 12 stacked with the first conductor 11. The second conductor 12 is located on the inner periphery of the first conductor 11. The first conductor 11 has a first pin 111 and a second pin 112 electrically connected; the second conductor 12 has a third pin 121 and a fourth pin 122 electrically connected. The magnet housing 20 includes a first magnet 21 and a second magnet 22. One side of the first magnet 21 is provided with a protrusion 211 and a receiving groove 212 surrounding the outer periphery of the protrusion 211. The conductor group 10 is accommodated in the receiving groove 212, and the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 are all exposed in the receiving groove 212. The second magnet 22 contacts and engages with the first magnet 21, shielding the receiving groove 212. The conductor group 10 is located between the first magnet 21 and the second magnet 22. The inductor 100 can reduce power supply ripple, meet load requirements, reduce losses, improve conversion efficiency, and reduce the number of downstream capacitors, thereby reducing installation area and lowering costs.

[0034] In this embodiment, the first pin 111 and the second pin 112, the third pin 121 and the fourth pin 122 constitute a set of electrodes for the inductor 100. The first conductor 11 further includes a first body portion 113 connecting the first pin 111 and the second pin 112. The first body portion 113 is n-shaped, with the first pin 111 and the second pin 112 located at opposite ends of the first body portion 113 and extending away from each other. The first body portion 113 is accommodated within the receiving groove 212. The second conductor 12 further includes a second body portion 123 connecting the third pin 121 and the fourth pin 122. The second body portion 123 is n-shaped, with the third pin 121 and the fourth pin 122 located at opposite ends of the second body portion 123 and extending towards each other. The second body portion 123 is accommodated within the receiving groove 212 and located on the inner periphery of the first body portion 113. The first conductor 11 and the second conductor 12 are fixedly connected relative to each other. The outer surface of the first main body 113 is covered with a first insulating layer 114, so that the first conductor 11 and the second conductor 12 are electrically insulated.

[0035] Preferably, all corners of the first conductor 11 are chamfered with a radius of 0.05-0.25 mm to prevent the first insulating layer 114 from being punctured. The corners of the second conductor 12 are provided with arc-shaped transition surfaces 124. Preferably, the corner radii of the first conductor 11 and the second conductor 12 are 0.5-0.8 mm. During the hot-pressing process, the first magnet 21 and the second magnet 22 are compressed, and the distance between the conductor group 10 and the first magnet 21 and the second magnet 22 continuously decreases until they are in complete contact. That is, the first main body 113 and the second main body 123 are in close contact with the first magnet 21 and / or the second magnet 22, ensuring the relative fixation of the conductor group 10 and the magnet shell 20. The arc-shaped transition surface 124 further prevents gaps between the corners of the conductor group 10 and the magnet shell 20. The third pin 121 and the fourth pin 122 are also provided with an arc-shaped transition surface 124 on the side near the first pin 111 or the second pin 112, so that there is no possibility of contact between the first conductor 11 and the second conductor 12.

[0036] In this embodiment, the first magnet 21 has a bottom surface (not shown) and a top surface 23 disposed opposite to each other, and a first side surface 24 connecting the bottom surface and the top surface 23, as shown below. Figure 1 As shown. The receiving groove 212 is n-shaped, recessed from the top surface 23 towards the bottom surface, and extends through the first side surface 24. The first magnet 21 is E-shaped. The first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 are all exposed on the first side surface 24 and are spaced apart from each other. That is, the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 are all exposed on the same side of the magnet housing 20. The inductor 100 of this utility model has a simple structure. By cooperating with the conductor group 10 and the magnet housing 20, it can form multiple electrodes and multiple combinations of application forms, saving space.

[0037] In the first embodiment of this utility model, the first magnet 21 is a rectangular columnar structure, and the second magnet 22 is a plate-like structure. That is, the first magnet 21 has an E-shaped structure, and the second magnet 22 has an I-shaped structure. Figures 2-7 As shown, a first magnet 21 is provided, the conductor group 10 is located in the receiving groove 212, and the second magnet 22 is in contact with the top surface 23 of the first magnet 21. The second magnet 22 abuts against the protrusion 211 and covers the receiving groove 212. In the first embodiment, the magnet housing 20 is composed of two first magnets 21 and second magnets 22 with different structures, and has a set of electrodes corresponding to the inductor 100.

[0038] In the second embodiment of this utility model, the second magnet 22 has the same structure as the first magnet 21. Both the second magnet 22 and the first magnet 21 are E-shaped and mirror-symmetrically arranged. The top surface 23 of the first magnet 21 and the top surface 23 of the second magnet 22 are in contact with each other, the two protrusions 211 abut against each other, the two receiving grooves 212 are interconnected, and the conductor group 10 is housed within the receiving space enclosed by the two receiving grooves 212. In the second embodiment, the magnet housing 20 is composed of two identical first magnets 21 and second magnets 22, or in other words, the magnet housing 20 is composed of two first magnets 21, corresponding to a set of electrodes in the inductor 100.

[0039] In the third embodiment of this utility model, the structure of the first magnet 21' and the second magnet 22' is the same as that in the first embodiment. The difference is that multiple first magnets 21' are stacked together, such as... Figure 8 and Figure 9 As shown, the bottom surface of one of the first magnets 21' contacts and engages with the top surface 23 of the adjacent first magnet 21', meaning that multiple first magnets 21' are arranged in a translational and stacked manner, and these multiple first magnets 21' contact and engage with each other. Each first magnet 21' has a receiving groove 212 containing the conductor group 10, and the second magnet 22' contacts and engages with the top surface 23 of the topmost first magnet 21'. In the third embodiment, the magnet housing 20 is composed of multiple first magnets 21' and a second magnet 22' with a structure different from the first magnets 21', and the inductor 100' has multiple sets of electrodes. Of course, in other optional embodiments, the second magnet 22 can also be arranged in an E-shape, but the depth of the receiving groove 212 of the second magnet 22 and the topmost first magnet 21 is shallower, so as to jointly enclose the receiving space as in the second embodiment. In the third embodiment, by combining multiple conductor groups 10 and first magnets 21', a multi-electrode, multi-combination application is formed, which can save space and reduce costs. Preferably, the first magnet 21' can be stacked in multiple ways, including but not limited to stacking in a straight line or stacking side by side.

[0040] like Figures 10-12As shown, the inductor 100 also includes an insulating layer 30. The insulating layer 30 covers the outer surface of the magnet housing 20. That is, the insulating layer 30 does not contact the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122. In this embodiment, the first side 24 of the magnet housing 20 is provided with a groove (not labeled). The groove is centrally located between the first pin 111 and the second pin 112, and between the third pin 121 and the fourth pin 122, and the insulating layer 30 is provided in the groove. In this embodiment, the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 are all provided with insulating layers 30 for electrical insulation. When the inductor 100 has multiple sets of electrodes, the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 of two adjacent conductor groups 10 are provided with insulating layers 30. The inductor 100 further includes an electroplated layer 40, which is electroplated on the surfaces of the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 exposed on the magnet housing 20. Preferably, on the first side 24, the magnet housing is exposed on the sides of the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122, and the electroplated layer 40 extends to the exposed magnet housing 20, increasing the solderability, solder resistance, and adhesion of the electrodes.

[0041] like Figure 13 As shown, a method for fabricating the inductor 100 described above is also provided, comprising:

[0042] S1, Prepare a first conductor 11 and a second conductor 12. The first conductor 11 has a first pin 111 and a second pin 112 that are electrically connected, and the second conductor 12 has a third pin 121 and a fourth pin 122 that are electrically connected. Assemble and fix the first conductor 11 and the second conductor 12 to obtain conductor group 10.

[0043] In step S1, the specific steps for preparing the first conductor 11 are as follows:

[0044] S11, a preliminary conductor is prepared by copper sheet stamping or copper sheet cutting.

[0045] S12, the preliminary conductor is ground and chamfered with a chamfer radius of 0.05-0.25mm.

[0046] S13, a first insulating layer 114 is formed on the outer surface of the preliminary conductor using spraying, impregnation, or hot roller spraying methods. In step S12, the preliminary conductor can be placed in a chamfering machine for grinding to grind all edges of the preliminary conductor and remove burrs from the surface of the first conductor 11, forming chamfers at the corners of the first conductor 11 to facilitate the preparation of the first insulating layer 114 and prevent the coating of the first insulating layer 114 from causing any problems. The coating material selected for the first insulating layer 114 is a novel nano-coating material or a water-based SUP nano-coating material, which has advantages such as non-clogging, corrosion resistance, high temperature resistance, high insulation, good wear resistance, and environmental friendliness.

[0047] S14, strip the enamel coating from both ends of the preliminary conductor to form a first pin 111 and a second pin 112, thus obtaining the first conductor 11. Specifically, the enamel coating can be stripped using methods such as laser cutting or grinding; no particular method is specified. The bend radius of the first conductor 11 is 0.5-0.8 mm.

[0048] The steps for preparing the second conductor 12 are as follows:

[0049] S15, the second conductor 12 is prepared using a copper sheet cutting and bending process, an enameled flat copper wire process, or a square copper wire forming process. In this embodiment, the bends of the second conductor 12 are ground to form an arc-shaped transition surface 124, and burrs on the surface of the second conductor 12 are removed. The bend radius of the second conductor 12 is 0.5-0.8 mm. Preferably, the third pin 121 and the fourth pin 122 have an arc-shaped transition surface 124 on the side closest to the first pin 111 or the second pin 112. This avoids the possibility of electrical contact between the first conductor 11 and the second conductor 12.

[0050] The steps for preparing the conductor assembly are as follows:

[0051] S16, the first conductor 11 and the second conductor 12 are assembled and fixed by dispensing or coating adhesive. Fast-drying or temperature-curing adhesives are preferred. The first conductor 11 and the second conductor 12 are overlapped, with the second conductor 12 located on the inner periphery of the first conductor 11.

[0052] In this embodiment, the first pin 111 and the second pin 112, the third pin 121 and the fourth pin 122 constitute a set of electrodes for the inductor 100. The first conductor 11 further includes a first main body portion 113 connecting the first pin 111 and the second pin 112, the first main body portion 113 being n-shaped. The first pin 111 and the second pin 112 are located at opposite ends of the first main body portion 113 and extend away from each other. The second conductor 12 further includes a second main body portion 123 connecting the third pin 121 and the fourth pin 122, the second main body portion 123 being n-shaped, the third pin 121 and the fourth pin 122 being located at opposite ends of the second main body portion 123 and extending towards each other. The second main body portion 123 is located on the inner periphery of the first main body portion 113. The first conductor 11 and the second conductor 12 are fixedly connected relative to each other and electrically insulated from each other. Preferably, the outer surface of the first main body portion 113 is covered with the first insulating layer 114. In this embodiment, the copper sheet mainly includes oxygen-free copper, high-purity copper, single-crystal copper, high-strength and high-conductivity copper alloys, copper-based composite materials, etc.

[0053] S2, Prepare a first magnet 21. One side of the first magnet 21 has a protrusion 211 and a receiving groove 212 surrounding the protrusion 211. Specifically, the first magnet 21 is obtained by filling a first magnet mold with a micro / nano composite soft magnetic material and then cold-pressing it. This micro / nano composite soft magnetic material possesses multiple characteristics such as low loss, high permeability, high saturation, and high temperature resistance. The specific parameters for this cold pressing are: at room temperature, the unit pressure is controlled at 5t-6t, preferably 5.5t. The pressing time is approximately 2 seconds. The first magnet 21 is E-shaped.

[0054] S3, firstly, the first magnet 21 is placed in a hot press mold, and then the conductor assembly 10 is placed into the hot press mold and assembled with the first magnet 21 to obtain an assembly. In this embodiment, the first magnet 21 and the conductor assembly 10 can be precisely placed into the hot press mold by a first magnet filling machine and a conductor filling machine combined with a vision mechanism, and the conductor assembly 10 is located in the receiving groove 212 of the first magnet 21, with the first pin 111, the second pin 112, the third pin 121 and the fourth pin 122 exposed in the receiving groove 212.

[0055] S4, Prepare the second magnet 22. Fill the second magnet mold with micro-nano composite soft magnetic material and cold press to obtain the second magnet 22. The parameters for this cold pressing are the same as those for preparing the first magnet 21. Precisely place the second magnet 22 into the hot pressing mold using a second magnet filling machine and a vision mechanism, and hot press it together with the assembly. Remove the hot pressing mold to obtain the initial inductor. The parameters for this hot pressing are: temperature controlled at 190℃, unit pressure controlled at 5t-6t, and pressing time approximately 100 seconds. During the hot pressing process, the first magnet 21 and the second magnet 22 are compressed, and the distance between the conductor group 10 and the first magnet 21 and the second magnet 22 continuously decreases until they are in complete contact. The conductor group 10 is located within the receiving groove 212, and the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122 are all exposed outside the initial inductor. The first magnet 21 and the second magnet 22 form a magnet housing 20, and the first pin 111, the second pin 112, the third pin 121 and the fourth pin 122 are all exposed on the surface of the magnet housing 20.

[0056] S5, a roller-spraying process is performed on the outer surface of the initial inductor to prepare an insulating layer 30. The coating material selected for the roller-spraying process is a novel nano-coating material or a water-based SUP nano-coating material, which has advantages such as non-clogging, corrosion resistance, high temperature resistance, high insulation, good wear resistance, and environmental friendliness.

[0057] S6, the insulating layer 30 at the first pin 111, the second pin 112, the third pin 121 and the fourth pin 122 is stripped to expose the first pin 111, the second pin 112, the third pin 121 and the fourth pin 122.

[0058] S7, electroplating is performed on the first pin 111, the second pin 112, the third pin 121, and the fourth pin 122, i.e., Cu, Ni, and Sn are electroplated sequentially to prepare an electroplated layer 40, thereby obtaining the inductor 100. The electroplated layer 40 can increase the conductivity, solderability, solderability, and adhesion of the electrodes.

[0059] Optionally, in step S3, the assembly is formed by assembling one first magnet 21 and one conductor group 10, or the assembly is formed by assembling multiple first magnets 21 and multiple conductor groups 10 at intervals. That is, when the assembly is formed by assembling one first magnet 21 and one conductor group 10, the inductor 100 formed by hot-pressing the second magnet 22 with the assembly is an inductor with one set of electrodes. When the assembly is formed by assembling multiple first magnets 21 and multiple conductor groups 10 at intervals, the inductor 100 formed by hot-pressing the second magnet 22 with the assembly is an inductor 100 with multiple sets of electrodes. The inductor 100 can also be tested and packaged. The product's dimensions, insulation resistance, and Rdc are tested to reject defective products in terms of size and performance, and good products are packaged.

[0060] In summary, the inductor of this invention, by providing a protrusion 211 on one side of the first magnet 21 and a receiving groove 212 surrounding the protrusion 211, accommodates the first conductor 11 and the second conductor 12 stacked with the first conductor 11 within the receiving groove 212. The first lead 111 and the second lead 112 of the first conductor 11, and the third lead 121 and the fourth lead 122 of the second conductor 12 are all exposed outside the receiving groove 212. Furthermore, the second magnet 22 positions the conductor group 10 between the first magnet 21 and the second magnet 22. The inductor of this invention has a simple structure and can be configured with multiple conductor groups 10 and magnet housings 20 to form multiple electrode combinations, reducing costs and saving space.

[0061] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. An inductor, characterized in that, include: A conductor assembly includes a first conductor and a second conductor disposed overlapping the first conductor, the second conductor being located on the inner periphery of the first conductor; the first conductor has a first pin and a second pin electrically connected; the second conductor has a third pin and a fourth pin electrically connected. The magnet housing includes a first magnet and a second magnet. One side of the first magnet is provided with a protrusion and a receiving groove surrounding the outer periphery of the protrusion. The conductor group is housed in the receiving groove, and the first pin, the second pin, the third pin and the fourth pin are all exposed in the receiving groove. The second magnet contacts and engages with the first magnet, thus shielding the receiving groove, and the conductor assembly is located between the first magnet and the second magnet.

2. The inductor according to claim 1, characterized in that: The first conductor further includes a first main body portion connecting the first pin and the second pin. The first main body portion is n-shaped. The first pin and the second pin are located at opposite ends of the first main body portion and extend away from each other. The first main body portion is accommodated in the receiving groove.

3. The inductor according to claim 2, characterized in that: The second conductor further includes a second body portion connecting the third pin and the fourth pin. The second body portion is n-shaped, with the third pin and the fourth pin located at opposite ends of the second body portion and extending toward each other. The second body portion is accommodated within the receiving groove and located on the inner periphery of the first body portion.

4. The inductor according to claim 3, characterized in that: The first conductor has a chamfer at the corner, and the third and fourth pins have an arc-shaped transition surface on the side closest to the first or second pin.

5. The inductor according to claim 2, characterized in that: The first conductor and the second conductor are fixedly connected relative to each other and are electrically insulated from each other.

6. The inductor according to claim 5, characterized in that: The outer surface of the first main body is covered with a first insulating layer.

7. The inductor according to claim 1, characterized in that: The receiving groove is n-shaped and extends through the side of the first magnet. The first pin, the second pin, the third pin, and the fourth pin are all exposed on the same side of the first magnet and are spaced apart from each other.

8. The inductor according to claim 7, characterized in that: The first magnet is a rectangular columnar structure, and the second magnet is a plate-like structure. The second magnet abuts against the protruding column and covers the receiving groove.

9. The inductor according to claim 7, characterized in that: The second magnet is arranged in a mirror image symmetrical to the first magnet. The first magnet and the second magnet are in contact with each other, and the two protrusions abut against each other. The conductor group is housed in a receiving space surrounded by the two receiving grooves.

10. The inductor according to claim 7, characterized in that: Multiple first magnets are arranged in a translational and stacked manner, and the multiple first magnets are in contact with each other. Each first magnet has a receiving groove containing the conductor group. The second magnet is in contact with the top surface of the first magnet located at the top.

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