TWM506357U - Inductor structure - Google Patents

Description

Inductive structure 【0001】

The present invention relates to an internal electrical component arrangement and structure of an electrical device.

【0002】

Nowadays, technology is developing rapidly, and mobile devices are gradually becoming indispensable electronic devices, such as mobile phones, tablets and wearable devices. To increase the portability and convenience of mobile devices, the main technology focuses on reducing the size of the battery, but the battery storage capacity. It also reduces the need for mobile devices to be charged, so each product must be equipped with a transformer for charging. The conventional transformer has a certain volume, and its biggest challenge is that the two main components inside the transformer occupy a certain space, resulting in the overall transformer can not be reduced, one of which is a capacitor and the other is an inductor. The basic principle of the inductor is to wind the coil around the magnetic material. The inductance is proportional to the number of turns of the coil. To increase the inductance, it can be done by increasing the number of turns. However, increasing the number of turns of the coil will also increase the magnetic resistance. Thermal energy can cause damage to the magnetic components.

[0003]

Please refer to FIG. 1 and FIG. 2 , which are schematic diagrams and plan views of the internal inductance component of the charger. The inductor component includes two iron cores 90 and a coil 80 , and the iron core includes left and right side walls 91 and a middle column 92 . Depending on the appearance of an E-shape, the coil 80 is wound around the post 92 of the two cores 90, and there is an air gap 70 between the posts 92 of the two cores. The drawback of the inductance component of the conventional transformer is that if the inductance is increased, the number of turns of the coil needs to be increased, or when there are different winding or wire diameter requirements, the coil must be stacked around, but the coil surrounds the center pillar and expands outward. When the core side wall is affected, the number of turns of the coil is also limited. In addition, as mentioned above, increasing the number of turns will increase the thermal energy. In order to avoid damage to the core due to overheating, the sidewall must maintain a considerable thickness. When the two cores are coupled, no matter how they are set, they occupy a certain volume, so that the inductor The components cannot be miniature and the transformers have the same volume. In addition, conventional techniques design an air gap between the cores to avoid magnetic saturation, but the air gap may cause leakage inductance and performance degradation.

[0004]

In summary, in order to reduce the volume of the transformer, the core of the inductor element and its winding must be further improved, so that the reliability of the inductor can be improved, and the space can be reduced.

[0005]

The main purpose of this creation is to provide an inductive structure that reduces the space occupied by its internal magnetic components.

[0006]

The secondary purpose of this creation is to provide an inductive structure that surrounds the coils of the internal magnetic components from the core.

【0007】

The second objective of this creation is to provide an inductive structure that reduces the leakage and loss of performance of its internal magnetic components.

[0008]

The second objective of this creation is to provide an inductive structure that effectively configures its internal magnetic components, reduces the length of the magnetic components and plug connections, and increases device reliability.

【0009】

In order to achieve the above-mentioned various purposes and effects, the present invention discloses an inductive structure comprising: a substrate and a magnetic component; the magnetic component comprises a flat core group, a first coil and a second coil; and further, the flat core group is further The utility model comprises: a first iron core and a second iron core.

[0010]

In an embodiment, the magnetic component is disposed on the substrate, the first core has two side pillars and a middle pillar, the second core is coupled to the two side pillars, and the surface of the middle pillar and the second iron core Forming an air gap, the first coil surrounds the center pillar, and the surrounding area does not include the end of the column in the cover, the second coil surrounds one of the columns, and the direction of the first coil and the second coil is parallel to the surface of the substrate, thereby reducing the magnetic property Component volume.

[0011]

In another embodiment, the second core surface has a recess, and the recess geometry corresponds to the center pillar end geometry such that an air gap is formed between the recesses.

[0012]

In another embodiment, the first coil and the second coil may be formed by stacking a plurality of PCB boards having a first through hole and a second through hole, the first through hole and the second through hole having a circular line around, and The first iron core is disposed through the first through hole and the second through hole, and the annular wire is like the first coil and the second coil.

10‧‧‧Substrate
20‧‧‧Magnetic components
201‧‧‧Flat core group
2011‧‧‧First core
20111‧‧‧ side column
20112‧‧‧中柱
2012‧‧‧second core
202‧‧‧First coil
203‧‧‧second coil
204‧‧‧ Air gap
205‧‧‧PCB board
2051‧‧‧First perforation
2052‧‧‧Second perforation
2053‧‧‧The first circular line
2054‧‧‧Second circular line
70‧‧‧ air gap
80‧‧‧ coil
90‧‧‧ iron core
91‧‧‧ side wall
92‧‧‧ center column L‧‧‧ around the direction

[0013]

The first picture: a schematic diagram of a conventional magnetic component;
Second figure: a flat view of a conventional magnetic element;
The third figure is a schematic diagram of the inductor structure of a preferred embodiment of the present invention;
Fourth: it is a schematic diagram of the magnetic component of the preferred embodiment of the present invention;
Figure 5 is a plan view of the magnetic component of the preferred embodiment of the present invention;
Figure 6 is a schematic view showing an air gap of another preferred embodiment of the present invention;
Figure 7 is a schematic view showing an air gap of another preferred embodiment of the present invention;
Figure 8 is a plan view of another preferred embodiment of the magnetic component;
Figure 9 is a plan view of a magnetic element of another preferred embodiment of the present invention;
Figure 11 is a schematic view of a magnetic component of another preferred embodiment of the present invention.

[0014]

In order to give your reviewers a better understanding and understanding of the characteristics of the creation and the efficacies achieved, please provide a better example and a detailed description of the following:

[0015]

Please refer to the third figure, which is a schematic diagram of an inductor structure according to a preferred embodiment of the present invention. Referring to the fourth figure, a schematic diagram of a magnetic component of a preferred embodiment of the present invention is shown; The inductive structure includes a substrate 10 and a magnetic element 20, and the magnetic element 20 includes: a flat core group 201, a first coil 202, and a second coil 203; further, the flat core group 201 further includes: a first core 2011 And the second core 2012.

[0016]

Please refer to the fifth figure together, which is a plan view of the magnetic component of the present invention. The magnetic component 20 of the present invention is disposed on the substrate 10, wherein the first core 2011 has two side columns 20111 and a middle column 20112, The appearance of an iron core 2011 presents an E-shape, the second core 2012 is coupled to the pillars 20111 of the first core 2011, and the second core 2012 presents an I-shape, and the middle pillar 20112 and the second core 2012 An air gap 204 is formed by the end of the center pillar 20112 and the surface of the second core 2012; in addition, the first coil 202 of the magnetic element 20 surrounds the pillar 20112 of the first core 2011, and the first coil 202 is surrounded by the range At the end of the center pillar, the second coil 203 surrounds one of the side pillars 20111 of the first core 2011.

[0017]

The substrate 10 of the present inductive structure is a circuit board, and other components are disposed in addition to the magnetic component 20. The first coil 202 and the second coil 203 of the magnetic element 20 respectively surround the center pillar 20112 and the one side pillar 20111 thereof, and do not overlap each other, so that the winding is not constrained by the flat core group 201, and the visual circuit design is required. One coil 202 and the second coil 203 are each numbered, or a third coil may be disposed on the other side pillar 20111, and the third coil is not restrained by the space of the iron core; moreover, since the flat core group 201 is flat, Therefore, the magnetic element 20 can lie flat on the substrate 10, and the so-called flat substrate 10, that is, the winding direction L of the first coil 202 and the second coil 203 is parallel to the surface of the substrate 10, and therefore, the flat core group 201 is used. The arrangement of the flat substrate 10 can greatly reduce the space occupied by the magnetic component 20 in the electrical device.

[0018]

Please refer to the sixth figure, which is a schematic diagram of the air gap of another preferred embodiment of the present invention; as shown in the figure, the air gap 204 of the present invention is composed of the end of the first core 11 2011 and the second iron. The surface of the core 2012 is formed, and the surface of the second core 2012 has a concave portion, and the concave portion can accommodate the end of the middle pillar, so that the air gap 204 is formed in the concave portion, and the geometry of the concave portion can match the geometry of the end of the middle pillar. The air gap 204 is located in the concave portion of the surface of the second core 2012 to form a cladding region, which can reduce magnetic flux leakage and performance loss. Please refer to the seventh figure, which is a schematic diagram of the air gap of another preferred embodiment of the present invention; as shown in the figure, except for the surface of the second core 2012 having a concave portion, the end of the middle pillar 20111 can be formed. A convex structure allows the convex structure of the end to be accommodated in the concave portion, and has a better coating effect.

[0019]

Please refer to the eighth figure, which is a plan view of a magnetic component according to another preferred embodiment of the present invention; as shown in the figure, the appearance of the first core 2011 of the present invention presents an E-shape, and the appearance of the second core 2012 presents a U. The second coil 203 may also include the second core 2012 at this time. In combination with the previous embodiment, the U-shaped second core 2012 has a recess on its surface, and the geometry of the recess can match the geometry of the end of the center pillar to form an air gap 204.

[0020]

Please refer to the ninth figure, which is a plan view of a magnetic component according to another preferred embodiment of the present invention; as shown in the figure, the iron core group of the present invention has a flat shape, and the first core 2011 has two side columns 20111 and In the middle column 20112, the second core 2012 is coupled to the two sides of the column 20111, and the intermediate column 20112 has an air gap 204 between the surface of the second core 2012, wherein the first coil 202 surrounds the center pillar 20112, and the second coil 203 surrounds the center pillar. 20112 does not overlap with the first coil 202. The first coil 202 and the second coil 203 of the embodiment respectively surround the center pillar 20111, and do not need to be overlapped, and are not restrained by the iron core space, and the flat elongated core group can achieve the reduction of the structure of the electric reducing device.

[0021]

Please refer to the tenth figure, which is a schematic diagram of a magnetic component according to another preferred embodiment of the present invention; as shown in the figure, the magnetic component of the present invention is formed by a core group and a plurality of PCB plates 204, each PCB plate 205 has a first through hole 2051 and a second through hole 2052, and a first annular wire 2053 is formed around the first hole 2051, and a second annular wire 2054 is formed around the second hole 2052. When the plurality of PCB plates 205 are stacked, The first loop trace 2053 is like the first coil 202, and the second loop trace 2054 is like the second coil 203, and the two columns 2011 and the center pillar 20112 of the first core 2011 are respectively passed through the first through hole 2051. And a second through hole 2052.

[0022]

In order to solve the problem that the magnetic component inside the conventional inductor structure is too large and occupies a large space, the inductive structure disclosed in the present invention comprises a substrate and a magnetic component disposed on the substrate, and the magnetic component has a flat core group, including the first An iron core and a second iron core, the first iron core has two side pillars and a middle pillar, the second iron core is coupled with the two side pillars, the middle pillar forms an air gap with the surface of the second iron core, and has a first A coil surrounds the center pillar, and the surrounding area does not include the end of the pillar in the cover, and a second coil surrounds one of the pillars, wherein the magnetic component is laid flat on the substrate, and the so-called flat coil is surrounded by the first coil and the second coil. The direction is parallel to the surface of the substrate, thereby reducing the volume of the magnetic component, and additionally using the flattening characteristic of the iron core to lie flat on the substrate, thereby greatly reducing the space occupied by the magnetic component, and further, because the first coil and the second coil respectively The side columns and the center column are not stacked on each other, so the number of turns and the wire diameter are not limited by the core.

[0023]

In addition, in order to avoid the influence of the performance of the magnetic component, the second core surface of the present invention has a concave portion and an air gap, and the concave portion can accommodate the end of the middle pillar, and the geometry of the concave portion can match the geometry of the end of the middle pillar, so that the air gap Forming a cladding region can reduce magnetic flux leakage and loss of performance. The inductive structure of the present invention may also be a flat long iron core group. At this time, the first coil surrounds the middle pillar, and the second coil surrounds the middle pillar and does not overlap with the first coil. At this time, the coil is not surrounded by the iron core. The space limitation achieves the effect of reducing the space occupied by the magnetic component inside the inductor structure.

[0024]

In addition, in order to simplify the coil circumference, the first coil and the second coil of the present invention may be formed by a plurality of PCB plates, each PCB plate has a first through hole, and a second through hole, and a circular line is formed around the first through hole and the second through hole. When the plurality of PCB plates are stacked, the loop wire is like the first coil and the second coil, and the first iron core is respectively passed through the first through hole and the second through hole, so that the volume reduction effect of the magnetic element can also be achieved.

10‧‧‧Substrate

20‧‧‧Magnetic components

L‧‧‧ Around the direction

Claims (18)

[Item 1] An inductive structure having a substrate and a magnetic component, the magnetic component comprising:
A flat iron core set having:
a first iron core, the first iron core has two side pillars and a middle pillar; and a second iron core coupled to the two side pillars of the first iron core, between the middle pillar and the second iron core Have an air gap;
a first coil surrounding the center pillar; and a second coil surrounding one of the side pillars;
The first coil and the second coil are surrounded by a direction parallel to the surface of the substrate. [Item 2] The inductive structure of claim 1, wherein the air gap is between an end of the center pillar and a surface of the second core. [Item 3] The inductive structure of claim 1, wherein the surface of the second core has a recess, and the end of the middle post is received in the recess, so that the air gap is formed in the recess, the air gap The geometry corresponds to the geometry of the recess and the end of the center post. [Item 4] The inductive structure of claim 3, wherein the end of the center pillar has a convex structure, and the air gap is formed with the concave portion, and the geometry of the air gap corresponds to the geometry of the concave portion and the convex portion structure. . [Item 5] The inductive structure of claim 1, wherein the first core is an E-type and the second core is an I-type. [Item 6] The inductive structure of claim 1, wherein the first core is E-shaped and the second core is U-shaped. [Item 7] The inductive structure of claim 1, wherein the first coil and the second coil are formed by laminating a plurality of PCB boards. [Item 8] The inductive structure of claim 7, wherein the PCB board has a first through hole and a second through hole, and the PCB board forms a first circular line around the first through hole. A second annular trace is formed around the second through hole, the first annular trace is the first coil, the second annular trace is the second coil, and the first core is disposed at the first a perforation and the second perforation. [Item 9] The inductive structure of claim 1, wherein the substrate is a circuit board. [Item 10] An inductive structure having a substrate and a magnetic component, the magnetic component comprising:
A flat long iron core group having:
a first iron core, the first iron core has two side pillars and a middle pillar; and a second iron core coupled to the two side pillars of the first iron core, between the middle pillar and the second iron core Have an air gap;
a first coil surrounding the center pillar; and a second coil surrounding the center pillar and not overlapping the first coil;
The first coil and the second coil are surrounded by a direction parallel to the surface of the substrate. [Item 11] The inductive structure of claim 10, wherein the air gap is between an end of the center pillar and a surface of the second core. [Item 12] The inductive structure of claim 10, wherein the surface of the second core has a recess, and the end of the middle post is received in the recess, so that the air gap is formed in the recess, the air gap The geometry corresponds to the geometry of the recess and the end of the center post. [Item 13] The inductive structure of claim 10, wherein the end of the center pillar has a convex structure, and the air gap is formed with the concave portion, and the geometry of the air gap corresponds to the geometry of the concave portion and the convex portion structure. . [Item 14] The inductive structure of claim 10, wherein the first core is an E-type and the second core is an I-type. [Item 15] The inductive structure of claim 10, wherein the first core is E-shaped and the second core is U-shaped. [Item 16] The inductive structure of claim 10, wherein the first coil and the second coil are formed by stacking a plurality of PCB boards. [Item 17] The inductive structure of claim 16, wherein the PCB boards have a first through hole and a second through hole, and the PCB boards form a first circular line around the first through hole. A second annular trace is formed around the second through hole, the first annular trace is the first coil, the second annular trace is the second coil, and the first core is disposed at the first a perforation and the second perforation. [Item 18] The inductive structure of claim 10, wherein the substrate is a circuit board.