CN218826625U

CN218826625U - Power inductance element and device

Info

Publication number: CN218826625U
Application number: CN202222929549.1U
Authority: CN
Inventors: 李永权; 赵家彦
Original assignee: Kunshan Maji Electronics Co ltd
Current assignee: Kunshan Maji Electronics Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-04-07
Anticipated expiration: 2032-11-03

Abstract

The present application relates to the field of inductor technology, and more particularly, to a power inductor and a power inductor device. The first magnetic core comprises a first groove and a second groove; the secondary winding comprises a first insulating part, first electrode parts are arranged at two ends of the first insulating part, the secondary winding is arranged in the first groove, and the secondary winding is in limit connection with the first magnetic core; the primary winding comprises a second insulating part, two ends of the second insulating part are provided with second electrode parts, the primary winding is arranged in the second groove, and the primary winding is in limit connection with the first magnetic core; an insulating layer disposed between the secondary winding and the primary winding; and an air gap bonding layer is arranged between the second magnetic core and the first magnetic core. By adopting the method, the possibility of short-circuit fault caused by the abrasion of the enameled wire between the two stages of windings can be reduced.

Description

Power inductance element and device

Technical Field

The present application relates to the field of inductor technology, and more particularly, to a power inductor and a power inductor device.

Background

A Trans-inductor Voltage Regulator (TLVR) is a type of Voltage Regulator that uses a transformer winding as an output inductance. In a multiphase crossed inductor regulator circuit, one winding of a transformer serves as the output inductance of one of the phases, and the other winding of the transformer is coupled in series to a reference ground. Due to the series coupled windings, changes in load current can affect each phase circuit, allowing the cross-inductor voltage regulator to achieve faster transient response than conventional voltage regulation circuits, allowing the cross-inductor voltage regulator to be used as a power processor, memory, FPGA, ASIC, etc. in servers, data centers, and storage systems.

Currently, the conventional cross inductor voltage regulator in the industry generally adopts a vertical dual winding structure. In production, a secondary winding of the cross inductor voltage stabilizer with a vertical double-winding structure mostly adopts a flat enameled wire, bending, stripping paint at an electrode and tinning an electrode for forming, and a primary winding is formed by punching a copper material into a certain shape, and then plating nickel and tinning.

However, after the assembly of the finished inductor product with the conventional vertical double-winding structure is completed, the primary winding and the secondary winding are bonded together, the flat enameled wire is easily damaged during the processes of bending and the like or product assembly, and at the moment, because the electrodes of the primary winding and the secondary winding are close to each other, a short circuit is easily generated between the two windings when a current passes through the electrodes, so that the product performance is unstable.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a power inductor and a device capable of reducing the possibility of short-circuit failure between two windings due to wear of an enameled wire.

In a first aspect, the present application provides a method for manufacturing a power inductor element. The method comprises the following steps:

a first groove and a second groove are formed in the first magnetic core;

fitting a secondary winding into the first groove;

covering an insulating layer in the first magnetic core along the second groove;

fitting a primary winding into the second groove;

and combining the first magnetic core and the second magnetic core to obtain the power inductance element.

In one embodiment, the forming the first groove and the second groove on the first magnetic core includes:

determining a first magnetic core size based on an element size, determining a first groove size and a second groove size based on the first magnetic core size, wherein the width of the second groove is larger than the width of the first groove;

and manufacturing a first magnetic core according to the first magnetic core size, the first groove size and the second groove size.

In one embodiment, said making a first magnetic core based on said first magnetic core size, said first recess size, and said second recess size comprises:

placing a first magnetic core substrate into a first magnetic core mold;

and the first magnetic core substrate is molded and sintered to form the first magnetic core.

In one embodiment, before the assembling the secondary winding into the first groove, the method further includes:

stamping and forming the secondary winding base material into the secondary winding based on the first magnetic core size and the first groove size;

marking an electrode pattern on the secondary winding;

attaching an electrode layer to the electrode pattern region on the secondary winding;

and carrying out insulation treatment on the region outside the electrode pattern on the secondary winding.

In one embodiment, attaching an electrode layer to the electrode pattern region on the secondary winding includes:

attaching a metal nickel layer to the electrode pattern region on the secondary winding;

and attaching a metal copper layer to the electrode pattern area on the secondary winding.

In one embodiment, the insulating the region outside the electrode pattern on the secondary winding includes:

covering the electrode pattern region on the secondary winding with an isolation layer;

adhering an insulating film on the surface of the secondary winding;

and removing the isolation layer covered by the electrode pattern area.

In one embodiment, said fitting a secondary winding into said first slot comprises:

attaching a first adhesive layer in the first groove;

placing the secondary winding in the first groove and adhering the secondary winding against the first adhesive layer.

In one embodiment, the fitting of the primary winding into the second groove includes:

attaching a second adhesive layer on the insulating layer;

placing the primary winding in the second groove and adhesively bonding against the second adhesive layer.

In one embodiment, the combining the first magnetic core and the second magnetic core to obtain the power inductance element includes:

attaching an air gap adhesive layer on top of said first magnetic core;

intimately combining a second magnetic core with said first magnetic core through said air-gap bonding layer;

and curing the bonding parts in the first magnetic core and the second magnetic core to obtain the power inductance element.

In a second aspect, the present application further provides a power inductance component, which is prepared by the method for manufacturing a power inductance component according to any one of the first aspect.

A power inductive component, comprising:

the first magnetic core comprises a first groove and a second groove;

the secondary winding comprises a first insulating part, two ends of the first insulating part are provided with first electrode parts, the secondary winding is arranged in the first groove, and the secondary winding is in limit connection with the first magnetic core;

the primary winding comprises a second insulating part, two ends of the second insulating part are provided with second electrode parts, the primary winding is arranged in the second groove, and the primary winding is in limit connection with the first magnetic core;

an insulating layer disposed between the secondary winding and the primary winding;

and an air gap bonding layer is arranged between the second magnetic core and the first magnetic core.

In one embodiment, an adhesive layer is disposed between the first groove and the secondary winding and between the insulating layer and the primary winding.

In one embodiment, the adhesive layer and the air gap adhesive layer are made of a thermosetting material.

In one embodiment, the insulating layer has a higher temperature resistance rating than the curing temperature of the adhesive layer and the air gap adhesive layer.

In one embodiment, the air gap bond layer is formed by at least a blend of thermoset bonds and spheres of the same size.

In one embodiment, the first insulating part and the second insulating part are provided with insulating coatings.

In one embodiment, the secondary winding and the primary winding are C-shaped windings or delta-shaped windings.

In one embodiment, the secondary winding and the primary winding are integrally formed from a conductive material.

In one embodiment, the first magnetic core and the second magnetic core are made of soft magnetic metal powder through die pressing and sintering.

In a third aspect, the present application further provides a device equipped with a power inductance component, wherein the power inductance component is prepared by the power inductance component manufacturing method according to any one of the first aspect.

The power inductance element manufacturing method and the power inductance element can obtain the following beneficial effects in implementation:

the first magnetic core is provided with a first groove and a second groove, the secondary winding is assembled in the first groove, the primary winding is assembled in the second groove, the insulating layer is arranged between the secondary winding and the primary winding, and the relative position between the primary winding and the secondary winding is kept fixed through the assembling positions in the first groove and the second groove, so that the possibility that the primary winding and the secondary winding are subjected to extrusion friction under the action of external force in the using process of the inductance element is reduced, and the abrasion of the primary winding and the secondary winding is caused. The insulating layer is arranged between the secondary winding and the secondary winding, so that the insulating performance between the secondary winding and the primary winding is further improved through the insulating layer, and the fault rate of the inductance element is reduced.

Drawings

Fig. 1 is a first flowchart illustrating a method for manufacturing a power inductor according to an embodiment;

fig. 2 is a schematic structural diagram of a first magnetic core of a power inductance component according to an embodiment;

fig. 3 is a schematic diagram illustrating an assembled secondary winding of a power inductor according to an embodiment;

fig. 4 is a schematic structural diagram of an embodiment of a power inductor element after an insulating layer covers a secondary winding;

fig. 5 is a schematic diagram illustrating an assembled primary winding of a power inductor according to an embodiment;

FIG. 6 is a schematic diagram of a power inductor component according to an embodiment;

fig. 7 is a second flowchart of a method for manufacturing a power inductor according to another embodiment;

fig. 8 is a third flow chart illustrating a method of fabricating a power inductor according to another embodiment;

fig. 9 is a fourth flowchart illustrating a method of fabricating a power inductor according to another embodiment;

fig. 10 is a fifth flowchart illustrating a method for manufacturing a power inductor according to another embodiment;

fig. 11 is a sixth flowchart illustrating a method of manufacturing a power inductor according to another embodiment;

fig. 12 is a seventh flowchart illustrating a method for manufacturing a power inductor according to another embodiment;

fig. 13 is an eighth flowchart illustrating a method of manufacturing a power inductor according to another embodiment;

fig. 14 is a ninth flowchart illustrating a method for manufacturing a power inductor according to another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure, as similar modifications may be made by one skilled in the art without departing from the spirit of the present disclosure, and thus the present disclosure is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, the terms "assembled," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, or both, and may be internal or external to the two elements or in any other relationship or combination thereof unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, as shown in fig. 1, a method for manufacturing a power inductor element is provided, which includes the following steps;

step 102: a first groove and a second groove are formed in the first magnetic core.

The magnetic core may refer to a magnetic conductive substance provided in a magnetic circuit of the inductor to increase magnetic induction of the electromagnet. It is emphasized that the first core may refer to one of the plurality of cores in the power inductance component, but does not specifically refer to a core disposed azimuthally below the component.

Specifically, as shown in fig. 2, a first groove and a second groove may be formed in the first magnetic core, and widths and depths of the first groove and the second groove may be determined according to actual parameter requirements. First recess and second recess can get rid of the clout in first recess and the second recess through the machining mode after making first magnetic core general, also can make first recess and second recess integrated into one piece on first magnetic core through the first magnetic core mould of customization before making first magnetic core.

Step 104: fitting a secondary winding into the first groove.

The secondary winding may not specifically refer to a winding with a specific function, but may refer to a winding with a certain relative assembly position.

Specifically, as shown in fig. 3, the secondary winding may be embedded in a first groove on the first magnetic core and fixed in the first groove.

Step 106: an insulating layer is covered in the first magnetic core along the second groove.

Wherein, the insulating layer may refer to a spacer layer that separates or wraps the charged body with a non-conductive substance to achieve the electric shock protection function.

Specifically, as shown in fig. 4, when the secondary winding is assembled, the first groove in the first magnetic core is filled, and at this time, the insulating layer may be covered along the second groove, and the insulating layer may cover the secondary winding in the first groove while covering the second groove.

Step 108: fitting a primary winding into the second groove.

Wherein a primary winding may refer to a winding that cooperates with a secondary winding.

Specifically, as shown in fig. 5, the primary winding may be embedded in a second groove on the first magnetic core, and the primary winding may be fixed in the second groove. At the moment, the primary winding is fixed in the second groove, the secondary winding is fixed in the first groove, and the insulating isolation efficiency between the primary winding and the secondary winding is enhanced through the insulating layer.

Step 1010: and combining the first magnetic core and the second magnetic core to obtain the power inductance element.

The power inductor may be a chip inductor or a surface-mounted high-power inductor.

Specifically, as shown in fig. 6, after the assembly of the primary magnetic core and the secondary magnetic core is completed, a second magnetic core matched with the first magnetic core may be combined and fixed on the first magnetic core, and finally, the power inductance component is obtained.

In the manufacturing method of the power inductance element, the following beneficial effects can be produced in the implementation:

the first magnetic core is provided with the first groove and the second groove, the secondary winding is fixed through the first groove, and the primary winding is fixed through the second groove, so that the relative positions of the secondary winding and the primary winding on the first magnetic core are fixed, the possibility of surface abrasion caused by friction between the secondary winding and the primary winding in the use process of the element is reduced, and the possibility of short circuit between the secondary winding and the primary winding is reduced. The insulating layer covers the second groove, and the secondary winding and the primary winding are further isolated by the insulating layer, so that the insulating purpose between the secondary winding and the primary winding is further achieved by the insulating layer besides the surface insulating property of the insulating layer, and the insulating layer is also beneficial to reducing the spacing distance between the secondary winding and the primary winding while enhancing the insulating property between the primary winding and the secondary winding, so that the miniaturization design of the power inductance element is facilitated, and the application range of the power inductance element is finally widened.

In one embodiment, step 102 further comprises:

step 702: a first magnetic core size is determined based on an element size, a first groove size and a second groove size are determined based on the first magnetic core size, and the width of the second groove is larger than that of the first groove.

Specifically, the size of the first magnetic core may be determined according to the overall size of the power inductance element, and the first magnetic core size may be a relative value in a preset ratio to the power inductance element size. After the first core size is determined, the first recess size and the second recess size may be determined based on the first core size. To facilitate the covering of the insulating layer between the primary winding and the secondary winding, the width of the first groove may be smaller than the width of the second groove. In this way, it is helpful for the insulating layer to extend to both sides in addition to covering the secondary winding in the first groove, so that a certain margin is obtained, which is helpful for further enhancing the insulation protection effect of the insulating layer.

Step 704: and manufacturing a first magnetic core according to the first magnetic core size, the first groove size and the second groove size.

Specifically, a first groove size and a second groove size can be calculated according to a preset proportion according to the size of the first magnetic core, wherein the first groove size comprises a first groove width and a second groove depth, and the second groove size comprises a second groove width and a second groove depth. Subsequently, can be according to the first magnetic core mould of the above-mentioned size preparation that acquires, acquire through the mould pressing process, also can cut the waste material in first recess and the second recess on first magnetic core after acquiring first magnetic core based on first magnetic core size to acquire the first magnetic core of seting up first recess and second recess.

In this embodiment, the first recess size and the second recess size are proportional to the first magnetic core size, which helps to ensure the structural strength of the power inductor.

In one embodiment, step 704 includes:

step 802: the first magnetic core substrate is placed in a first magnetic core mold.

Specifically, the first core substrate may be manganese-zinc-ferrite powder or the like, and the manganese-zinc-ferrite may be placed in the first core mold described in step 704.

Step 804: and the first magnetic core substrate is molded and sintered to form the first magnetic core.

Specifically, after the first magnetic core base material is filled in the first magnetic core mold, a dense first magnetic core preform may be formed by cold press molding, and then the first magnetic core preform is heated to a temperature above the crystalline melting point of the first magnetic core base material to be sinter-molded into the first magnetic core.

In one embodiment, step 104 includes:

step 902: and based on the size of the first magnetic core and the size of the first groove, the secondary winding base material is punched and formed into the secondary winding.

In particular, the secondary winding substrate may be copper material.

Step 904: an electrode pattern is marked on the secondary winding.

In particular, the shape of the electrode pattern may be marked by the skilled person according to the requirements of use.

Step 906: and attaching an electrode layer to the electrode pattern region on the secondary winding.

Step 908: and carrying out insulation treatment on the region outside the electrode pattern on the secondary winding.

Specifically, the insulation treatment of the region other than the electrode pattern on the secondary winding may be achieved by spraying polyimide or attaching an insulation layer on the secondary winding by a vapor deposition method.

In the embodiment, the secondary winding is obtained by stamping the secondary winding base material, the traditional mode of obtaining the secondary winding by bending the enameled wire is replaced, the possibility of damaging the element due to abrasion of the enameled wire is reduced, the insulating property of the secondary winding is provided by the insulating surface of the secondary winding through insulating treatment of the region outside the electrode pattern of the secondary winding, and the possibility of failure in the using process of the element is further reduced.

In one embodiment, step 906 includes:

step 1002: and attaching a metal nickel layer to the electrode pattern region on the secondary winding.

Specifically, a metallic nickel layer may be attached to the electrode pattern region on the secondary winding by electrolytic or chemical means.

Step 1004: and attaching a metal copper layer to the electrode pattern area on the secondary winding.

Specifically, a metallic copper layer may be attached to the electrode pattern region on the secondary winding by electrolytic or chemical means.

In this embodiment, the metal nickel layer and the metal copper layer are attached to the electrode pattern region on the secondary winding, the electrode pattern region of the secondary winding has electrical conductivity through the metal copper layer, and the corrosion resistance and the oxidation resistance of the electrode pattern region of the secondary winding are enhanced through the metal nickel layer, which is beneficial to improving the service life of the inductance element.

In one embodiment, step 908 comprises:

step 1102: and covering the electrode pattern region on the secondary winding with an isolation layer.

In particular, the electrode pattern area on the secondary winding may be covered with a temporarily used, removable isolating layer.

Step 1104: and adhering an insulating film on the surface of the secondary winding.

Specifically, the insulating film may be attached to the surface of the secondary winding by spraying polyimide or by vapor deposition.

Step 1106: and removing the isolation layer covered by the electrode pattern area.

Specifically, after the insulating film is attached to the surface of the secondary winding, the insulating film covering the electrode pattern region of the secondary winding may be removed by a physical method, and accordingly, a portion of the insulating film covering the surface of the insulating film is also removed, thereby exposing the electrode of the secondary winding.

In the embodiment, the secondary winding is processed by fully insulating the secondary winding and revealing the way of exposing the electrodes, which is beneficial to improving the production efficiency of the secondary winding.

In one embodiment, step 104 includes:

step 1202: attaching a first adhesive layer in the first groove;

specifically, a first adhesive layer may be attached in the first groove, and the first adhesive layer may be a thermosetting adhesive such as epoxy resin or the like.

Step 1204: placing the secondary winding in the first groove and adhering the secondary winding against the first adhesive layer.

In particular, the secondary winding may be embedded in a first groove on the first magnetic core and bonded to the first adhesive layer.

In one embodiment, step 108 includes:

step 1302: attaching a second adhesive layer on the insulating layer;

specifically, a second adhesive layer may be attached on the insulating layer, and the second adhesive layer may be a thermosetting adhesive such as epoxy resin or the like.

Step 1304: and placing the primary winding into the second groove and carrying out interference adhesion with the second adhesive layer.

In particular, the primary winding may be placed in the second groove and bonded with the second adhesive layer.

In this embodiment, the adhesive layer disposed between the magnetic core and the winding is helpful to enhance the combination strength of the components in the power inductance element, and to improve the stability of the element.

In one embodiment, step 1010 includes:

step 1402: an air gap adhesive layer is attached to the top of the first magnetic core.

The air-gap adhesive layer may be an object having an adhesive effect and capable of generating an air gap between two adhered objects, and may be a thermosetting adhesive such as epoxy resin with a certain amount of glass beads having the same particle size incorporated therein. The thermosetting adhesive can be adhesive material with the characteristics of being not dissolved and not melted after being cured by heating, and can be epoxy resin.

Specifically, an air gap adhesive layer may be attached to the top of the first magnetic core, and the top of the first magnetic core may be a surface on the side where the first magnetic core and the second magnetic core are adhered.

Step 1404: closely combining a second magnetic core with said first magnetic core through said air gap adhesive layer.

In particular, the second magnetic core may be combined with the first magnetic core by an air gap bonding layer.

Step 1406: and curing the bonding parts in the first magnetic core and the second magnetic core to obtain the power inductance element.

Specifically, since the first adhesive layer, the second adhesive layer, and the air-gap adhesive layer can be made of a thermosetting adhesive, in order to enhance the adhesive effect, the first magnetic core and the second magnetic core after being combined can be placed in a curing oven, and the oven temperature is heated to the curing temperature of the thermosetting adhesive, so that the adhesive part is cured, and finally the power inductance component is obtained.

In this embodiment, the combined power inductance element is heated and cured, which is helpful for further enhancing the structural stability of the power inductance element and improving the quality of the power inductance element.

It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the application also provides a power inductance element which is prepared based on the method in any one of the embodiments.

In one embodiment, a power inductor is provided, which is manufactured by the following steps:

the manganese-zinc ferrite powder is firstly formed into a first magnetic core through cold die pressing and sintering, epoxy resin is coated in the middle of a first groove in the first magnetic core, and then the secondary winding subjected to insulation treatment is embedded into the first groove and bonded with the epoxy resin. An insulating layer, which may be a PI mylar sheet (polyimide film), is then placed in the second recess in the first magnetic core, and an epoxy is dispensed onto the surface of the insulating layer. The primary winding is embedded in the second groove and bonded with epoxy on the surface of the insulating layer. Then, an air gap paste is dispensed on the side of the first magnetic core far away from the primary winding and the secondary winding electrode, and the air gap paste can be made of epoxy resin mixed with glass beads with the same particle size. And (3) bonding the second magnetic core with the first magnetic core through air gap glue, sending the first magnetic core and the second magnetic core which are combined into a curing furnace, heating to epoxy resin to obtain curing temperature, and finally obtaining the power inductance element.

In one embodiment, there is provided a power inductive element comprising:

the first magnetic core comprises a first groove and a second groove;

Among them, the thermosetting material may refer to an adhesive material having a property of being cured by heating and not being dissolved or melted, such as epoxy resin or the like.

In one embodiment, the first insulating portion and the second insulating portion are each provided with an insulating coating thereon.

In one embodiment, the first and second magnetic cores are made of soft magnetic metal powder by die sintering.

Based on the same inventive concept, the embodiment of the present application further provides an apparatus, where the apparatus is equipped with a power inductance element, and the power inductance element is the power inductance element described in any one of the above embodiments.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A power inductive component, comprising:

the first magnetic core comprises a first groove and a second groove;

2. The power inductor component of claim 1, wherein: and adhesive layers are arranged between the first groove and the secondary winding and between the insulating layer and the primary winding.

3. The power inductor component of claim 2, wherein: the adhesive layer and the air gap adhesive layer are made of a thermosetting material.

4. A power inductive component according to claim 3, wherein: the temperature resistance grade of the insulating layer is higher than the curing temperature of the bonding layer and the air gap bonding layer.

5. The power inductor component of claim 1, wherein: the air gap bonding layer is formed by mixing at least thermosetting bonding materials and spheres with the same particle size.

6. The power inductive component of claim 1, wherein: and the first insulating part and the second insulating part are provided with insulating coatings.

7. The power inductive component of claim 1, wherein: the secondary winding and the primary winding are C-shaped windings or n-shaped windings.

8. The power inductive component of claim 1, wherein: the secondary winding and the primary winding are made of conductor materials in an integrated molding mode.

9. The power inductive component of claim 1, wherein: the first magnetic core and the second magnetic core are prepared by soft magnetic metal powder through mould pressing and sintering.

10. An apparatus, characterized in that the apparatus is equipped with a power inductance component, which is the power inductance component of any one of claims 1 to 9.