Integrally-formed inductor

Abstract

The utility model provides an integrally-formed inductor which comprises a winding, a first lead-out terminal and a second lead-out terminal, the winding comprises a conductor ring, a first lead-out terminal and a second lead-out terminal, the conductor ring is formed by winding a strip-shaped conductor around an accommodating area circle by circle, and the first lead-out terminal and the second lead-out terminal are electrically connected with the two ends of the conductor in the winding direction respectively; the winding is wrapped in the magnet, the first leading-out terminal and the second leading-out terminal respectively extend from the inside of the magnet to the outside of the magnet, and the magnet is arranged outside the containing area of the conductor ring so that a cavity can be formed in the magnet. The distance deviation between the side face of the winding and the adjacent surface of the magnet can be controlled within a small range, DCR can be reduced, the inductance value is increased, and the index performance of the inductor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic components, and in particular to an integrated molded inductor. Background Art

[0002] With the rapid development of science and technology, especially the emergence of multifunctional equipment, the demand for the entire passive device is increasing. As one of the passive components, magnetic components are also widely used. The requirements for large current, high frequency, high reliability, etc. are constantly upgraded. In order to meet this, the application of magnetic components is becoming more and more extensive. Magnetic components include at least magnets and windings. The windings are made of conductors. The current flows through the windings to generate a magnetic field. It is the core part of the magnetic component. The existing windings are made of enameled wire as a conductor and spirally wound. The structural stability is low, and the cross-section of the enameled wire is circular or elliptical, resulting in more gaps between each circle of enameled wire. When the magnet of the magnetic component is prepared by molding, the spirally wound enameled wire is easy to move, resulting in a large deviation in the distance between the side of the winding and the adjacent surface of the magnet, which affects the index performance of the inductor, such as a large DCR (Directive Current Resistance) and a low inductance. Utility Model Content

[0003] In view of this, the present application provides an integrally molded inductor, which can improve the problems of large deviation in distance between the side of the existing winding and the adjacent surface of the magnet, as well as the resulting large DCR, low inductance and other issues that affect the performance of the inductor.

[0004] The present application provides an integrated molded inductor, comprising:

[0005] The winding comprises a conductor loop, a first lead terminal and a second lead terminal, wherein the conductor loop is formed by winding a strip-shaped conductor around an accommodation area in turns, and the first lead terminal and the second lead terminal are respectively electrically connected to two ends of the conductor along the winding direction;

[0006] The winding is enclosed in the magnet, the first lead terminal and the second lead terminal extend from the inside of the magnet to the outside of the magnet respectively, and the magnet is arranged outside the accommodating area of ​​the conductor ring to form a cavity inside the magnet.

[0007] Optionally, the first lead terminal includes a first main body portion, a first extension portion, and a second extension portion connected in sequence, and the first main body portion is electrically connected to one end of the conductor;

[0008] The first extension portion is parallel to the conductor ring and extends to the first side surface of the magnet, and the second extension portion extends along the thickness direction of the conductor ring and is parallel to the first side surface of the magnet;

[0009] The second lead terminal comprises a second main body portion, a third extension portion and a fourth extension portion connected in sequence, and the second main body portion is electrically connected to the other end of the conductor;

[0010] The third extension portion is parallel to the conductor ring and extends to the second side surface of the magnet, and the fourth extension portion extends along the thickness direction of the conductor ring and is parallel to the second side surface of the magnet;

[0011] Wherein, the first side surface and the second side surface of the magnet are arranged opposite to each other.

[0012] Optionally, the first lead terminal also includes a fifth extension portion connected to the second extension portion, and the second lead terminal also includes a sixth extension portion connected to the second extension portion; the fifth extension portion is arranged in parallel to the third side surface of the magnet, the sixth extension portion is arranged in parallel to the third side surface of the magnet, and the first side surface and the second side surface are vertically connected to opposite sides of the third side surface.

[0013] Optionally, the fifth extension portion is arranged in parallel to the fourth side surface of the magnet, the sixth extension portion is arranged in parallel to the fourth side surface of the magnet, the fourth side surface is arranged opposite to the third side surface, and the first side surface and the second side surface are vertically connected to opposite sides of the fourth side surface.

[0014] Optionally, the third side surface or the fourth side surface of the magnet is provided with a first recessed area and a second recessed area; the fifth extension portion is provided in the first recessed area, and the sixth extension portion is provided in the second recessed area.

[0015] Optionally, the first recessed area and the second recessed area are arranged opposite to each other and aligned.

[0016] Optionally, the fifth extension portion and the sixth extension portion protrude from the third side surface or the fourth side surface of the magnet.

[0017] Optionally, the third side surface or the fourth side surface of the magnet is an integrated plane, and the fifth extension portion and the sixth extension portion are arranged on the integrated plane.

[0018] Optionally, the first extension portion and the third extension portion are arranged opposite to each other and are flush with each other.

[0019] Optionally, the first main body portion and the second main body portion are respectively arranged on the inner circle and the outer circle of the conductor circle.

[0020] Optionally, the fifth side and the sixth side of the magnet are arranged opposite to each other, and the first side, the second side, the third side and the fourth side are respectively vertically connected to the four sides of the fifth side, and are also respectively vertically connected to the four sides of the sixth side;

[0021] The minimum distance between the fifth side surface and the conductor loop is D1, 0.3 mm ≤ D1 ≤ 3.0 mm;

[0022] The minimum distance between the sixth side surface and the conductor loop is D2, 0.3 mm≤D2≤3.0 mm.

[0023] Optionally, the difference between D1 and D2 is within ±0.05 mm.

[0024] As described above, in the one-piece molded inductor of the present application, the conductor coils of the windings are formed by winding strip-shaped conductors one by one, the conductor contact area between the coils is large and the gaps are small, the structure is compact, and the structural strength of the conductor coils is high. When the magnetic components are prepared by compression molding, for example, the conductors of each coil are not easy to move, so that the distance deviation between the side of the winding and the adjacent surface of the magnet can be controlled within a small range, which is conducive to reducing DCR, increasing inductance, and improving the index performance of the inductor. In addition, the space utilization rate of the winding is high, and the cross-sectional area of ​​the strip-shaped conductor is large, which is not only easy to realize automated production, but also can meet the application requirements of small space and large current; at the same time, the conductors of each coil are not easy to move, which can reduce the risk of poor insulation between coils. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a structural schematic diagram of an integrated molded inductor provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 The structural cross-sectional view of the one-piece molded inductor along the AA direction is shown;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the winding of the one-piece molded inductor shown;

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure of the first lead terminal and the second lead terminal of the winding shown;

[0029] Figure 5 yes Figure 1 A schematic diagram of the structure of the one-piece molded inductor when the first lead terminal and the second lead terminal are not bent;

[0030] Figure 6 yes Figure 5 A schematic diagram of the structure of the winding of the one-piece molded inductor shown;

[0031] Figure 7 yes Figure 4 A schematic diagram of the structure when the first lead terminal and the second lead terminal are not bent;

[0032] Figure 8is a schematic structural diagram of another one-piece molded inductor provided in an embodiment of the present application;

[0033] Fig. 9 yes Figure 8 The structural cross-sectional view of the one-piece molded inductor along the BB direction is shown.

[0034] One-piece molding inductor 1

[0035] Winding 10

[0036] Conductor loop 10a Accommodation area 10b Conductor 101 Cavity 10c

[0037] The first lead terminal 11

[0038] The first main body portion 111 the first extending portion 112 the second extending portion 113 the fifth extending portion 114

[0039] The second lead terminal 12

[0040] The second main body portion 121 the third extension portion 122 the fourth extension portion 123 the sixth extension portion 124 the magnet 20

[0041] first side surface 21 second side surface 22 third side surface 23 fourth side surface 24 fifth side surface 25 first recessed area 231 second recessed area 232 DETAILED DESCRIPTION

[0042] In order to solve the above-mentioned technical problems existing in the prior art, in the one-piece molded inductor provided in the present application, the conductor turns of the winding are formed by winding strip-shaped conductors one by one, the conductor contact area between the turns is large and the gaps are small, the structure is compact, and the structural strength of the conductor turns is high. When the magnetic components are prepared by molding, for example, the conductors of each turn are not easy to move, so the distance deviation between the side of the winding and the adjacent surface of the magnet is controlled within a small range, which is beneficial to reduce DCR, increase inductance, and improve the index performance of the inductor.

[0043] In the one-piece molded inductor, the specific expressions of the parameters such as the shape, quantity, and size of the magnet, the conductor coil, the first lead terminal, and the second lead terminal can be determined according to the adaptability required by the actual scene. For example, the magnet can be as follows: Figure 1 and Figure 2 The rectangular body shown is not limited in this application.

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. In the absence of conflict, the following embodiments and their technical features can be combined with each other and also belong to the technical solutions of the present application.

[0045] In the description of the embodiments of the present application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the corresponding embodiments, rather than indicating or implying that a device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present application.

[0046] In order to facilitate the description and understanding of the solution of this application, Figures 1 to 7 As shown in the placement orientation, the width direction of the one-piece molded inductor is referred to as the first direction x, the thickness direction (or "height direction") is referred to as the second direction y, and the length direction is referred to as the third direction z. The first direction x, the second direction y and the third direction z are perpendicular to each other and can be regarded as the three coordinate axes of the three-dimensional rectangular coordinate system. It should be understood that the so-called perpendicularity in the whole application does not require that the angle between the two must be 90°, but allows a deviation of, for example, ±10°, that is, the so-called perpendicularity can be understood as the angle between any two directions is 80° to 100°. Similarly, the so-called parallelism in the whole application does not require that the angle between the two must be 0° or 180°, but allows a deviation of, for example, ±10°, that is, the so-called parallelism can be understood as the angle between any two directions is 0° to 10° or 170° to 190°.

[0047] See also Figures 1 to 7 The one-piece molded inductor 1 of this example includes a winding 10 and a magnet 20 .

[0048] The winding 10 includes a conductor turn 10 a , a first lead terminal 11 , and a second lead terminal 12 .

[0049] like Figure 3 As shown, the conductor loop 10a is formed by winding a strip-shaped (or long strip-shaped) conductor 101 around an accommodation area 10b, and the accommodation area 10b can be regarded as a cavity where the inner circle of the conductor loop 10a is located, and can be the area extended around the axis during winding. The thickness of the conductor loop 10a (i.e., the length along the second direction y, also called "height") can be equal to the width of the conductor 101.

[0050] The conductor 101 includes a body and an insulating layer covering the outer surface of the body. The body is a conductive member. Along the winding direction, blank areas not covered by the insulating layer are respectively provided at both ends of the conductor 101, where the blank areas of the body at both ends are exposed; the blank areas at both ends are respectively located on the two surfaces of the conductor 101 that are arranged opposite to each other, and for the wound conductor ring 10a, one of the blank areas is located in the inner ring of the conductor ring 10a, and the other blank area is located in the outer ring of the conductor ring 10a.

[0051] The first lead terminal 11 can cover the blank area located in the outer circle and be electrically connected to the body in the blank area of ​​the outer circle; the second lead terminal 12 covers the blank area located in the inner circle and is electrically connected to the body in the blank area of ​​the inner circle. The first lead terminal 11 and the second lead terminal 12 are both conductive members, for example, they can both be sheet-shaped or strip-shaped structural members, and the widths of the two can be the same, and the conductive properties can also be the same.

[0052] The shapes of the first lead terminal 11 and the second lead terminal 12 can be adaptively changed according to the assembly scenario. Figure 1 and Figure 2 In the scene shown, the magnet 20 is a rectangular body, including six sides, namely the first side 21, the second side 22, the third side 23, the fourth side 24, the fifth side 25 and the sixth side (not shown in the figure), the first side 21 and the second side 22 are arranged opposite to each other along the first direction x, and the first side 21 and the second side 22 are vertically connected to the opposite sides of the third side 23 along the first direction x; the fourth side 24 and the third side 23 are arranged opposite to each other along the second direction y, and the first side 21 and the second side 22 are vertically connected to the opposite sides of the fourth side 24 along the third direction z; the fifth side 25 and the sixth side are arranged opposite to each other along the third direction z, and the first side 21, the second side 22, the third side 23 and the fourth side 24 are respectively vertically connected to the four sides of the fifth side 25, and are also respectively vertically connected to the four sides of the sixth side.

[0053] Suitably, the first lead terminal 11 includes a first main body 111, a first extension 112, a second extension 113 and a fifth extension 114 connected in sequence, and the second lead terminal 12 includes a second main body 121, a third extension 122, a fourth extension 123 and a sixth extension 124 connected in sequence.

[0054] The first main body portion 111 is electrically connected to one end of the conductor 101, thereby being electrically connected to the inner circle of the conductor coil 10a. The fifth extension portion 114 is connected to the second extension portion 113. The first extension portion 112 and the fifth extension portion 114 are both arranged parallel to the third side surface 23 of the magnet 20. The first extension portion 112 is parallel to the conductor coil 10a and extends to the first side surface 21 of the magnet 20. The second extension portion 113 extends along the thickness direction of the conductor coil 10a (i.e., the second direction y) and is parallel to the first side surface 21 of the magnet 20. For example, the second extension portion 113 can be attached to the first side surface 21 of the magnet 20.

[0055] The second main body 121 is electrically connected to the other end of the conductor 101, thereby being electrically connected to the outer ring of the conductor ring 10a. The sixth extension 124 is connected to the second extension 113, and the third extension 122 and the sixth extension 124 are both arranged parallel to the third side surface 23 of the magnet 20; the third extension 122 is parallel to the conductor ring 10a and extends to the second side surface 22 of the magnet 20, and the fourth extension 123 extends along the thickness direction of the conductor ring 10a and is parallel to the second side surface 22 of the magnet 20, for example, the fourth extension 123 can be attached to the second side surface 22 of the magnet 20; the first extension 112 and the third extension 122 can be arranged oppositely and flush, so that the coplanarity of the winding 10 on this side (i.e., the bottom of the conductor ring 10a) is higher.

[0056] In other examples, the first lead terminal 11 may not be provided with the fifth extension portion 114 , and the second lead terminal 12 may not be provided with the sixth extension portion 124 . Here, the first lead terminal 11 is electrically connected to the outside through the second extension portion 113 , and the second lead terminal 12 is electrically connected to the outside through the fourth extension portion 123 .

[0057] Continue reading Figure 1 and Figure 2 , the third side surface 23 of the magnet 20 may be provided with a first recessed area 231 and a second recessed area 232. The fifth extension portion 114 of the first lead terminal 11 is provided in the first recessed area 231, and the sixth extension portion 124 of the second lead terminal 12 is provided in the second recessed area 232. Optionally, the first recessed area 231 and the second recessed area 232 are arranged opposite to each other and aligned, for example, the depths of the first recessed area 231 and the second recessed area 232 are equal, so that the fifth extension portion 114 and the sixth extension portion 124 can be flush with the third side surface 23, so that the coplanarity of the winding 10 on this side is higher, or the fifth extension portion 114 and the sixth extension portion 124 protrude from the third side surface 23 of the magnet 20, and the protruding height can be determined according to the actual needs, for example, the protruding height does not exceed 0.2mm.

[0058] In other examples, the third side surface 23 of the magnet 20 may be an integral plane, that is, the first recessed area 231 and the second recessed area 232 are not provided, and the fifth extension portion 114 and the sixth extension portion 124 are provided on the integral plane, thereby protruding from the third side surface 23 of the magnet 20 .

[0059] The magnet 2 wraps the winding 10 inside the magnet 20 , and the first lead terminal 11 and the second lead terminal 12 extend from inside the magnet 20 to outside the magnet 20 respectively. The magnet 20 is arranged outside the accommodating area 10b of the conductor coil 10a to form a cavity 10c inside the magnet 20 .

[0060] Combination Figures 1 to 7 As shown, this application can Figure 6 The winding 10 shown is put into the mold, and the structure of the first lead terminal 11 and the second lead terminal 12 is as follows: Figure 6 and Figure 7 As shown, the first extension portion 112, the second extension portion 113 and the fifth extension portion 114 are located on the same plane and parallel to the first direction x, and the third extension portion 122, the fourth extension portion 123 and the sixth extension portion 124 are located on the same plane and parallel to the first direction x; and then the magnetic material is used to form a Figure 5 As shown in the figure, the first extension part 112 and the third extension part 122 are covered, for example, the conductor ring 10a is buried in the metal magnetic powder and the aforementioned magnet 20 is formed by die casting or injection molding, and then the first lead terminal 11 and the second lead terminal 12 are bent to the bottom surface of the magnet 20 (i.e., the aforementioned third side surface 23) through the first side surface 21 and the second side surface 22 respectively, so as to form the desired product as shown in the figure. Figure 1 The one-piece molded inductor 1 shown in FIG. 1 has a first lead terminal 11 and a second lead terminal 12. Figure 3 and Figure 4 shown.

[0061] It should be understood that the manufacturing method of the one-piece molded inductor 1 described herein is only an exemplary description and is not limited. For example, a first magnetic part and a second magnetic part are provided which are pre-cured by a magnetic material, the first magnetic part is provided with a receiving groove, the winding 10 is provided in the receiving groove, and then the plate-shaped or sheet-shaped second magnetic part is assembled with the first magnetic part to cover the receiving groove, so that the winding 10 is wrapped in the magnet 20, the first lead terminal 11 and the second lead terminal 12 can extend to the outside of the magnet 20 through the connection between the first magnetic part and the second magnetic part, the first magnetic part and the second magnetic part are assembled to form the aforementioned magnet 20, and then the first lead terminal 11 and the second lead terminal 12 are bent, so as to obtain the magnet 20 as shown in FIG. Figure 1 The one-piece molded inductor 1 is shown.

[0062] In the one-piece molded inductor 1 of this example, the conductor turn 10a of the winding 10 is formed by winding a strip conductor 101 turn by turn. The contact area of ​​the conductor 101 between the turns is large and the gap is small. The structure is compact, and the structural strength of the conductor turn 10a is high. When the magnetic element is prepared by molding, for example, each turn of the conductor 101 is not easy to move, so that the distance deviation between the side of the winding 10 and the adjacent surface of the magnet 20 can be controlled within a small range, which is beneficial to reducing DCR, increasing inductance, and improving the index performance of the inductor. For example, the minimum distance between the fifth side surface 25 and the conductor circle 10a (i.e., the vertical distance between the fifth side surface 25 and the outer circle side surface corresponding to the conductor circle 10a along the third direction z) is D1, and the minimum distance between the sixth side surface and the conductor circle 10a (i.e., the vertical distance between the sixth side surface and the outer circle side surface corresponding to the conductor circle 10a along the third direction z) is D2, and 0.3mm≤D1≤3.0mm; 0.3mm≤D2≤3.0mm are satisfied. An example of the present application can obtain a difference between D1 and D2 within ±0.05mm. Therefore, compared with the existing inductor, under the same volume, the present application can reduce the DCR by 10% or increase the inductance by 10%.

[0063] In addition, the space utilization rate of the winding 10 is high, and the cross-sectional area of ​​the strip-shaped conductor 101 is large, which is not only easy to realize automated production, but also can meet the application requirements of small space and large current, which is conducive to the miniaturization design of the one-piece molded inductor 1; at the same time, each circle of conductor 101 is not easy to move, which can reduce the risk of poor insulation between circles, for example, the product yield can be increased by 5%.

[0064] Furthermore, by electrically connecting the first lead terminal 11 and the second lead terminal 12 to the two ends of the conductor circle 10a, it is equivalent to externalizing the electrical connection portion of the conductor circle 10a, which can avoid burning the insulation layer of the conductor circle 10a when welding with external terminals, thereby avoiding the occurrence of paint film burnback similar to that produced by the winding wound with enameled wire, and further reducing the risk of poor insulation between the conductor 101 circles.

[0065] Based on the description of the above examples, the difference is that Figure 8 and Fig. 9 As shown, the fifth extension portion 114 of the first lead terminal 11 is disposed parallel to the fourth side surface 24 of the magnet 20 , and the sixth extension portion 124 of the second lead terminal 12 is also disposed parallel to the fourth side surface 24 of the magnet 20 .

[0066] At this time, similarly, the first recessed area 231 and the second recessed area 232 can be arranged on the fourth side 24 of the magnet 20; or, in other examples, the fourth side 24 of the magnet 20 can be an integrated plane, that is, the first recessed area 231 and the second recessed area 232 are not arranged, and the fifth extension portion 114 and the sixth extension portion 124 are arranged on the integrated plane, so as to protrude from the fourth side 24 of the magnet 20.

[0067] Optionally, regardless of whether the first recessed area 231 and the second recessed area 232 are set on the fourth side 24 of the magnet 20, the fifth extension portion 114 and the sixth extension portion 124 can protrude from the fourth side 24, and the protruding height can be determined according to actual needs, for example, the protruding height does not exceed 0.2 mm.

[0068] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. For ordinary technicians in this field, all equivalent structural changes made using the contents of this specification and drawings are also included in the patent protection scope of the present application.

[0069] Although the terms "first, second", etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. In addition, the singular forms "one", "an", and "the" are intended to include plural forms as well. The terms "or" and "and / or" are interpreted as inclusive, or mean any one or any combination. Only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way, an exception to this definition will occur.

Claims

1. An integrated molded inductor, characterized in that: include: The winding comprises a conductor loop, a first lead terminal and a second lead terminal, wherein the conductor loop is formed by winding a strip-shaped conductor around an accommodation area in turns, and the first lead terminal and the second lead terminal are respectively electrically connected to two ends of the conductor along the winding direction; A magnet, wherein the winding is enclosed in the magnet, the first lead terminal and the second lead terminal extend from inside the magnet to outside the magnet respectively, and the magnet is arranged outside the accommodating area of ​​the conductor coil to form a cavity inside the magnet; Among them, the first lead terminal includes a first main body, a first extension, and a second extension connected in sequence, and a fifth extension connected to the second extension, the first main body is electrically connected to one end of the conductor; the first extension is parallel to the conductor loop and extends to the first side of the magnet, the second extension extends along the thickness direction of the conductor loop and is parallel to the first side of the magnet; the second lead terminal includes a second main body, a third extension, and a fourth extension connected in sequence, and a sixth extension connected to the second extension, the second main body is electrically connected to the other end of the conductor; the third extension is parallel to the conductor loop and extends to The second side surface of the magnet, the fourth extension portion extends along the thickness direction of the conductor ring and is parallel to the second side surface of the magnet; wherein the first side surface of the magnet is arranged opposite to the second side surface; the fifth extension portion is arranged parallel to the third side surface of the magnet, the sixth extension portion is arranged parallel to the third side surface of the magnet, and the first side surface and the second side surface are vertically connected to the opposite sides of the third side surface; or, the fifth extension portion is arranged parallel to the fourth side surface of the magnet, the sixth extension portion is arranged parallel to the fourth side surface of the magnet, the fourth side surface is arranged opposite to the third side surface, and the first side surface and the second side surface are vertically connected to the opposite sides of the fourth side surface.

2. The one-piece molded inductor according to claim 1, characterized in that: The third side surface or the fourth side surface of the magnet is provided with a first recessed area and a second recessed area; the fifth extension portion is provided in the first recessed area, and the sixth extension portion is provided in the second recessed area.

3. The one-piece molded inductor according to claim 2, characterized in that: The first recessed area and the second recessed area are arranged opposite to each other and aligned.

4. The one-piece molded inductor according to claim 1, characterized in that: The fifth extension portion and the sixth extension portion protrude from the third side surface or the fourth side surface of the magnet.

5. The one-piece molded inductor according to claim 1, characterized in that: The first extension portion and the third extension portion are arranged opposite to each other and are flush with each other.

6. The one-piece molded inductor according to any one of claims 1 to 5, characterized in that: The first main body portion and the second main body portion are respectively disposed on the inner circle and the outer circle of the conductor circle.

7. The one-piece molded inductor according to any one of claims 1 to 4, characterized in that: The fifth side surface and the sixth side surface of the magnet are arranged opposite to each other, and the first side surface, the second side surface, the third side surface and the fourth side surface are respectively vertically connected to the four side edges of the fifth side surface, and are also respectively vertically connected to the four side edges of the sixth side surface; The minimum distance between the fifth side surface and the conductor loop is D1, 0.3 mm ≤ D1 ≤ 3.0 mm; The minimum distance between the sixth side surface and the conductor loop is D2, 0.3 mm≤D2≤3.0 mm.

8. The one-piece molded inductor according to claim 7, characterized in that: The difference between D1 and D2 is within ±0.05 mm.

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