Power laminated inductor and inductance element

Abstract

The utility model discloses a power laminated inductor and an inductance element, and relates to the technical field of electronic components, the power laminated inductor comprises an upper substrate and a lower substrate, a plurality of insulating layers are arranged between the upper substrate and the lower substrate in a laminated manner, each insulating layer is provided with an electrode ring layer, every two adjacent electrode ring layers are conducted, and the upper substrate and the lower substrate are mutually connected. A plurality of heat dissipation grooves are formed in each insulating layer, the heat dissipation grooves are communicated with the outside, and the upper substrate is provided with two connecting terminals. According to the technical scheme provided by the utility model, when the laminated inductor is in a working state, certain resistance is generated when current passes through the conductor, so that electric energy is converted into heat energy, the heat dissipation grooves are communicated with the outside and are arranged close to the electrode ring layer, and the heat dissipation grooves can further increase the contact area between air and the heating conductor; and heat can be exchanged with outside air through the heat dissipation grooves, so that the temperature is reduced, and the problem of serious heating of the laminated inductor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a power laminated inductor and an inductor element. Background Art

[0002] Inductors are electronic components, usually made of conductor coils, used to store and release electrical energy. Their main function is to hinder the change of current, thereby generating inductance in the circuit. Inductors are widely used in electronic devices for filtering, regulating voltage, generating oscillations and many other functions. Its working principle is based on Faraday's law of electromagnetic induction. When current passes through a coil, a magnetic field is generated around it, which causes an induced voltage inside the coil.

[0003] Common inductor components include coil inductors and stacked inductors. As for stacked inductors, power stacked inductors are an important component used in power electronic converters and regulators. They include structures such as upper and lower substrates, insulating layers, and electrode coils. By stacking multiple layers of electrode coils together, the size and volume of the stacked inductor are significantly reduced, while its power density and inductance are improved. Power stacked inductors are usually made of highly permeable materials, such as ferrites, to enhance the magnetic coupling effect, thereby reducing energy loss and electromagnetic interference. They are widely used in fields such as DC-DC converters, power management systems, and electric vehicles, providing efficient and compact solutions for power electronic applications.

[0004] The existing power multilayer inductors on the market have a compact structure. When current passes through the conductor, a certain resistance is generated, causing electrical energy to be converted into heat energy, thereby causing severe heating. Utility Model Content

[0005] The main purpose of the utility model is to provide a power laminated inductor and an inductor element, aiming to provide a power laminated inductor with good heat dissipation effect and solve the problem of serious heating.

[0006] To achieve the above-mentioned purpose, the power stacked inductor proposed in the utility model includes an upper substrate and a lower substrate, a plurality of insulating layers are stacked between the upper substrate and the lower substrate, each of the insulating layers is provided with an electrode ring layer, every two adjacent electrode ring layers are conductive, each of the insulating layers is formed with a plurality of heat dissipation grooves, the heat dissipation grooves are connected to the outside, and the upper substrate is provided with two connecting terminals.

[0007] In one embodiment, the power stacked inductor further includes a plurality of connection point columns, wherein the connection point columns penetrate through one of the insulating layers, and every two adjacent electrode coil layers are connected via the connection point columns.

[0008] In one embodiment, the insulating layer is formed with four heat dissipation grooves, and the four heat dissipation grooves are evenly spaced.

[0009] In one embodiment, the power stacked inductor further includes a lead-out point column, and two ends of the lead-out point column are respectively connected to the insulating layer abutting against the lower substrate and one of the connecting terminals.

[0010] In one embodiment, the electrode layer includes a first strip-shaped portion, a second strip-shaped portion and a third strip-shaped portion connected in sequence, the first strip-shaped portion and the third strip-shaped portion are arranged in parallel and spaced apart, and the first strip-shaped portion and the third strip-shaped portion are both arranged at an angle to the second strip-shaped portion.

[0011] In one embodiment, the second strip-shaped portion is arranged in an arc shape, and two ends of the second strip-shaped portion are respectively connected to the first strip-shaped portion and the third strip-shaped portion.

[0012] In one embodiment, the electrode layer includes a first strip-shaped portion and a second strip-shaped portion connected in sequence, and the first strip-shaped portion and the second strip-shaped portion are arranged at an angle.

[0013] In one embodiment, the connecting terminal is made of silver-nickel-tin alloy.

[0014] In one embodiment, the electrode layer is formed on the insulating layer by screen printing.

[0015] The utility model also proposes an inductor element, including a power stacked inductor, the power stacked inductor includes an upper substrate and a lower substrate, a plurality of insulating layers are stacked between the upper substrate and the lower substrate, each insulating layer is provided with an electrode ring layer, every two adjacent electrode ring layers are conductive, each insulating layer is formed with a plurality of heat dissipation grooves, the heat dissipation grooves are connected to the outside, and the upper substrate is provided with two connecting terminals.

[0016] In the technical solution of the utility model, a power stacked inductor and an inductor element are proposed, wherein the power stacked inductor comprises an upper substrate, a lower substrate and a plurality of insulating layers arranged between the upper and lower substrates, each insulating layer is printed with an electrode coil layer, and every two adjacent electrode coil layers are conductive. When the stacked inductor is in a working state, a certain resistance will be generated when the current passes through the conductor, causing the electric energy to be converted into heat energy. The heat dissipation groove is connected to the outside and is arranged close to the electrode coil layer. The heat dissipation groove can further increase the contact area between the air and the heating conductor. The heat can be heat-exchanged with the outside air through the heat dissipation groove, thereby reducing the temperature, solving the serious heating problem of the stacked inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the exploded structure of an embodiment of a power stacked inductor provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of the power stacked inductor from another angle;

[0020] Figure 3 It is a schematic diagram of the structure of a power stacked inductor;

[0021] Figure 4 Schematic diagram of the position structure of the electrode layer;

[0022] Figure 5 FIG. 1 is a schematic diagram of the position structure of another embodiment of the electrode layer.

[0023] Description of Figure Numbers:

[0024] 1000. Power stacked inductor; 1. upper substrate; 11. connection terminal; 2. lower substrate; 3. insulation layer; 31. heat sink; 4. electrode ring layer; 41. first strip-shaped portion; 42. second strip-shaped portion; 43. third strip-shaped portion; 5. connection point column; 6. lead-out point column.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] Inductors are electronic components, usually made of conductor coils, used to store and release electrical energy. Their main function is to hinder the change of current, thereby generating inductance in the circuit. Inductors are widely used in electronic devices for filtering, regulating voltage, generating oscillations and many other functions. Its working principle is based on Faraday's law of electromagnetic induction. When current passes through a coil, a magnetic field is generated around it, which causes an induced voltage inside the coil.

[0030] Common inductor components include coil inductors and stacked inductors. As for stacked inductors, power stacked inductors are an important component used in power electronic converters and regulators. They include structures such as upper and lower substrates, insulating layers, and electrode coils. By stacking multiple layers of electrode coils together, the size and volume of the stacked inductor are significantly reduced, while its power density and inductance are improved. Power stacked inductors are usually made of highly permeable materials, such as ferrites, to enhance the magnetic coupling effect, thereby reducing energy loss and electromagnetic interference. They are widely used in fields such as DC-DC converters, power management systems, and electric vehicles, providing efficient and compact solutions for power electronic applications.

[0031] The existing power multilayer inductors on the market have a compact structure. When current passes through the conductor, a certain resistance is generated, causing electrical energy to be converted into heat energy, thereby causing severe heating.

[0032] In order to solve the above problems, the utility model proposes a power stacked inductor, which aims to provide a power stacked inductor with good heat dissipation effect and solve the problem of serious heat generation. Figures 1 to 5 The schematic diagram is a structural diagram of an embodiment of the power stacked inductor provided by the utility model.

[0033] Please refer to Figures 1 to 5The utility model proposes a power stacked inductor 1000, comprising an upper substrate 1 and a lower substrate 2, wherein a plurality of insulating layers 3 are stacked between the upper substrate 1 and the lower substrate 2, wherein each insulating layer 3 is provided with an electrode ring layer 4, and each two adjacent electrode ring layers 4 are conductively connected, and each insulating layer 3 is formed with a plurality of heat dissipation grooves 31, wherein the heat dissipation grooves 31 are connected to the outside, and the upper substrate 1 is provided with two connecting terminals 11.

[0034] In the technical solution of the utility model, a power stacked inductor 1000 and an inductor element are proposed, wherein the power stacked inductor 1000 includes an upper substrate 1, a lower substrate 2 and a plurality of insulating layers 3 arranged between the upper and lower substrates 2, each insulating layer 3 is printed with an electrode layer 4, and every two adjacent electrode layers 4 are conductive. When the stacked inductor is in a working state, a certain resistance will be generated when the current passes through the conductor, causing the electric energy to be converted into heat energy. The heat dissipation groove 31 is connected to the outside and is arranged close to the electrode layer 4. The heat dissipation groove 31 can further increase the contact area between the air and the heating conductor. The heat can be heat-exchanged with the outside air through the heat dissipation groove 31, thereby reducing the temperature and solving the serious heating problem of the stacked inductor.

[0035] In order to connect adjacent electrode coils 4 in series, the power stacked inductor 1000 includes a plurality of connection point columns 5. For details, please refer to Figure 1 Each connection point column 5 is arranged through the insulating layer 3 located above it and is connected to the electrode layer 4 printed on the insulating layer 3. The current flows in the electrode layer 4. When the current passes through the inductor, a magnetic field is generated around it. According to Faraday's law of electromagnetic induction, when the magnetic field changes, a voltage is generated in the inductor. The magnitude of this voltage is proportional to the rate of change of the current. The stacked inductor can store electrical energy and release it when needed. This is very important for stabilizing the output of the power supply and providing additional energy when needed. In switching power supplies and converters, the stacked inductor can store and release energy during the power cycle to provide a stable output.

[0036] When the multilayer inductor is working, a certain resistance will be generated when the current passes through the conductor, causing the electrical energy to be converted into heat energy, thereby causing the multilayer inductor to heat up seriously. To solve this problem, the insulating layer 3 is formed with four heat dissipation slots 31. For details, please refer to Figure 1 The four heat dissipation grooves 31 are evenly spaced and arranged in an open space enclosed by the first belt-shaped portion 41, the second belt-shaped portion 42 and the third belt-shaped portion 43. Such an arrangement can ensure the highest heat dissipation efficiency and the heat is discharged from the heat dissipation grooves 31.

[0037] In order to simplify the circuit layout, the power stacked inductor 1000 also includes a lead-out point column 6, which is arranged through all the stacked insulating layers 3, and the two ends are respectively connected to the bottom electrode coil layer 4, that is, the motor coil layer arranged on the insulating layer 3 abutting against the lower substrate 2 and one of the connecting terminals 11, wherein the other connecting terminal 11 is also led out from the upper substrate 1, and the two connecting terminals 11 are located at the same end of the stacked inductor. Placing the two connecting terminals 11 at one end can simplify the layout of the circuit board. Doing so can reduce the number of connectors and wires, reduce the complexity of the circuit board, thereby reducing manufacturing costs and improving production efficiency. In addition, the magnetic fields in the stacked inductor will couple with each other, and arranging the two connecting terminals 11 at one end can reduce the influence of the external magnetic field on the inductance value. This helps to maintain the stability of the inductance value and improve the performance and stability of the circuit. Placing the two connecting terminals 11 at one end can reduce the crosstalk between the inductor and other components, which helps to improve the anti-interference ability of the circuit and reduce signal distortion and noise.

[0038] It should be noted that the electrode layer 4 may be composed of a first strip-shaped portion 41, a second strip-shaped portion 42 and a third strip-shaped portion 43 connected in sequence, or may be composed of a first strip-shaped portion 41 and a second strip-shaped portion 42 connected in sequence. The present invention does not limit this. In one embodiment of the present invention, the electrode layer 4 includes a first strip-shaped portion 41, a second strip-shaped portion 42 and a third strip-shaped portion 43 connected in sequence. For details, please refer to Figure 4 , the first strip-shaped portion 41 and the third strip-shaped portion 43 are arranged in parallel and spaced apart, the first strip-shaped portion 41 and the third strip-shaped portion 43 are arranged at an angle with the second strip-shaped portion 42, and the first strip-shaped portion 41, the second strip-shaped portion 42 and the third strip-shaped portion 43 form an opening on one side, which extends the length of the electrode layer 4 under the condition of limited size, thereby increasing the inductance. In another embodiment of the utility model, the electrode layer 4 is composed of the first strip-shaped portion 41 and the second strip-shaped portion 42 which are perpendicular to each other, and the whole is L-shaped. Furthermore, the second strip-shaped portion 42 can also be set to an arc shape, such as Figure 5 As shown, by setting the second strip-shaped portion 42 to be arc-shaped, the length of the electrode coil layer 4 can be further extended, thereby increasing the inductance value.

[0039] The utility model also proposes an inductor component, which includes a power multilayer inductor 1000. The specific structure of the power multilayer inductor 1000 refers to the above embodiment. Since the inductor component adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0040] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A power multilayer inductor (1000), characterized in that: The invention comprises an upper substrate (1) and a lower substrate (2), wherein a plurality of insulating layers (3) are stacked between the upper substrate (1) and the lower substrate (2), each insulating layer (3) is provided with an electrode ring layer (4), and each two adjacent electrode ring layers (4) are electrically connected, and each insulating layer (3) is formed with a plurality of heat dissipation grooves (31), wherein the heat dissipation grooves (31) are connected to the outside, and the upper substrate (1) is provided with two connection terminals (11).

2. The power multilayer inductor (1000) according to claim 1, characterized in that: The power stacked inductor (1000) further comprises a plurality of connection point columns (5), wherein the connection point columns (5) are arranged through one of the insulating layers (3), and each two adjacent electrode coil layers (4) are connected via the connection point columns (5).

3. The power multilayer inductor (1000) according to claim 2, characterized in that: The insulating layer (3) is formed with four heat dissipation grooves (31), and the four heat dissipation grooves (31) are evenly spaced.

4. The power stacked inductor (1000) according to any one of claims 1 to 3, characterized in that: The power stacked inductor (1000) further comprises a lead-out point column (6), wherein two ends of the lead-out point column (6) are respectively connected to the insulating layer (3) abutting against the lower substrate (2) and one of the connecting terminals (11).

5. The power multilayer inductor (1000) according to any one of claims 1 to 3, characterized in that: The electrode layer (4) comprises a first strip-shaped portion (41), a second strip-shaped portion (42) and a third strip-shaped portion (43) which are connected in sequence, the first strip-shaped portion (41) and the third strip-shaped portion (43) being arranged in parallel and spaced apart, and the first strip-shaped portion (41) and the third strip-shaped portion (43) being arranged at an angle to the second strip-shaped portion (42).

6. The power multilayer inductor (1000) according to claim 5, characterized in that: The second belt-shaped portion (42) is arranged in an arc shape, and two ends of the second belt-shaped portion (42) are respectively connected to the first belt-shaped portion (41) and the third belt-shaped portion (43).

7. The power multilayer inductor (1000) according to any one of claims 1 to 3, characterized in that: The electrode coil layer (4) comprises a first strip-shaped portion (41) and a second strip-shaped portion (42) which are connected in sequence, and the first strip-shaped portion (41) and the second strip-shaped portion (42) are arranged at an angle.

8. The power multilayer inductor (1000) according to any one of claims 1 to 3, characterized in that: The material of the connecting terminal (11) is silver-nickel-tin alloy.

9. The power multilayer inductor (1000) according to any one of claims 1 to 3, characterized in that: The electrode ring layer (4) is formed on the insulating layer (3) by silk screen printing.

10. An inductor element, characterized in that: The invention comprises a power stacked inductor (1000) as claimed in any one of claims 1 to 9.

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