Inductor assembly

Abstract

The utility model discloses an inductor assembly. The inductor assembly comprises a first magnetic core, a second magnetic core, a third magnetic core and a coil assembly. The second magnetic core faces the first magnetic core and is made of the same material as the first magnetic core. The third magnetic core is arranged between the first magnetic core and the second magnetic core, and the material of the third magnetic core is different from the material of the first magnetic core and the material of the second magnetic core. The third magnetic core comprises a vertical part, a first transverse part and a second transverse part, wherein the vertical part is connected between the first transverse part and the second transverse part. The coil is located between the first magnetic core and the second magnetic core and surrounds the third magnetic core. A first air gap is formed between the first transverse portion and the first magnetic core, and a second air gap is formed between the second transverse portion and the second magnetic core. In this way, the magnetic flux density entering the first magnetic core and the second magnetic core with the low saturation magnetic flux density can be effectively dispersed, and meanwhile extra winding space is not occupied.

Description

Technical Field

[0001] This utility model relates to a magnetic component, and more particularly to an inductor component. Background Technology

[0002] Figure 1 This is a schematic diagram of a traditional inductor assembly. An inductor assembly typically includes two magnetic covers AB and a magnetic core post C. The two magnetic covers AB face each other, while the magnetic core post C is positioned between the two magnetic covers AB. The space D formed between the two magnetic covers AB and around the magnetic core post C is used to wind the coil E around the magnetic core post C.

[0003] To increase the available space, the traditional approach is to reduce the cross-sectional area of ​​the magnetic core's central pillar. While reducing the cross-sectional area of ​​the central pillar increases the available space, it also tends to cause the magnetic flux density entering the magnetic cover to saturate prematurely. When the magnetic flux density saturates prematurely, the inductance of the inductor component will decay earlier. The smaller the cross-sectional area of ​​the central pillar, the earlier the inductance of the inductor component begins to decay. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide an inductor assembly that addresses the shortcomings of existing technologies. The inductor assembly includes a first magnetic core, a second magnetic core, a third magnetic core, and a coil assembly. The second magnetic core faces the first magnetic core and is made of the same material as the first magnetic core. The third magnetic core is disposed between the first and second magnetic cores, and its material differs from both the first and second magnetic cores. The third magnetic core includes a vertical portion, a first horizontal portion, and a second horizontal portion, with the vertical portion connecting the first and second horizontal portions. The coil is located between the first and second magnetic cores and surrounds the third magnetic core. A first air gap is formed between the first horizontal portion and the first magnetic core, and a second air gap is formed between the second horizontal portion and the second magnetic core.

[0005] Optionally, the first magnetic core includes a first substrate and a plurality of first sidewalls, the plurality of first sidewalls protruding from the first substrate, and the second magnetic core includes a second substrate and a plurality of second sidewalls, the plurality of second sidewalls protruding from the second substrate.

[0006] Optionally, the first lateral portion has a first air gap with the first substrate, and the second lateral portion has a second air gap with the second substrate.

[0007] Optionally, the saturation magnetic flux density of the third magnetic core is greater than the saturation magnetic flux density of the first magnetic core and the saturation magnetic flux density of the second magnetic core.

[0008] Optionally, the cross-sectional area of ​​the first lateral portion is smaller than the cross-sectional area of ​​the first substrate, and the cross-sectional area of ​​the second lateral portion is smaller than the cross-sectional area of ​​the second substrate.

[0009] To solve the aforementioned technical problems, another technical solution adopted by this utility model is to provide an inductor assembly. The inductor assembly includes a first magnetic core, a second magnetic core, a third magnetic core, and a coil assembly. The second magnetic core faces the first magnetic core and its material is the same as that of the first magnetic core. The third magnetic core is disposed between the first and second magnetic cores, and its material is different from that of both the first and second magnetic cores. The third magnetic core includes a vertical portion, a first horizontal portion, and a second horizontal portion, with the first and second horizontal portions located on opposite sides of the vertical portion. The coil is located between the first and second magnetic cores and surrounds the third magnetic core. The first and second magnetic cores are respectively provided with a first groove and a second groove, with the first and second horizontal portions located within the first and second grooves, respectively. A first air gap is formed between the vertical portion and the first horizontal portion, and a second air gap is formed between the vertical portion and the second horizontal portion.

[0010] Optionally, the first magnetic core includes a first substrate and a plurality of first sidewalls, the plurality of first sidewalls protruding from the first substrate, and the second magnetic core includes a second substrate and a plurality of second sidewalls, the plurality of second sidewalls protruding from the second substrate.

[0011] Optionally, a third air gap is provided between the first transverse portion and the first groove, and a fourth air gap is provided between the second transverse portion and the second groove.

[0012] Optionally, the saturation magnetic flux density of the third magnetic core is greater than the saturation magnetic flux density of the first magnetic core and the saturation magnetic flux density of the second magnetic core.

[0013] Optionally, the cross-sectional area of ​​the first lateral portion is smaller than the cross-sectional area of ​​the first substrate, and the cross-sectional area of ​​the second lateral portion is smaller than the cross-sectional area of ​​the second substrate.

[0014] To solve the aforementioned technical problems, another technical solution adopted by this utility model is to provide an inductor assembly. The inductor assembly includes a first magnetic core, a second magnetic core, multiple third magnetic cores, and multiple coils. The second magnetic core is arranged longitudinally with the first magnetic core facing it, and the material of the second magnetic core is the same as that of the first magnetic core. Multiple third magnetic cores are spaced apart from each other in the transverse direction between the first and second magnetic cores, and the material of each third magnetic core is different from that of the first and second magnetic cores. Each third magnetic core includes a vertical portion, a first transverse portion, and a second transverse portion, with the first and second transverse portions located on opposite sides of the vertical portion, and the transverse direction being perpendicular to the longitudinal direction. Multiple coils are located between the first and second magnetic cores and surround the multiple third magnetic cores. The first magnetic core has multiple first grooves, and the second magnetic core has multiple second grooves. The multiple first transverse portions are located within the multiple first grooves, and the multiple second transverse portions are located within the multiple second grooves.

[0015] Optionally, the first magnetic core includes a first substrate and a plurality of first sidewalls, the plurality of first sidewalls protruding from the first substrate, and the second magnetic core includes a second substrate and a plurality of second sidewalls, the plurality of second sidewalls protruding from the second substrate.

[0016] Optionally, each of the third magnetic cores has a first air gap between the first lateral portion and the vertical portion, and each of the third magnetic cores has a second air gap between the second lateral portion and the vertical portion.

[0017] Optionally, the saturation magnetic flux density of each of the third magnetic cores is greater than the saturation magnetic flux density of the first magnetic core and the saturation magnetic flux density of the second magnetic core.

[0018] Optionally, the sum of the cross-sectional areas of the plurality of first lateral portions is less than the cross-sectional area of ​​the first substrate, and the sum of the cross-sectional areas of the plurality of second lateral portions is less than the cross-sectional area of ​​the second substrate.

[0019] One of the advantages of this invention is that the inductor component provided by this invention has a first lateral portion and a second lateral portion with a high saturation magnetic flux density, which can effectively disperse the magnetic flux density entering the first magnetic core and the second magnetic core with a lower saturation magnetic flux density, while not occupying additional winding space. The magnetic flux exists only in the space within the first magnetic core and the second magnetic core, and will not flow to the outside and cause heat generation in external devices.

[0020] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a traditional inductor component.

[0022] Figure 2 This is a perspective view of the inductor assembly provided according to the first embodiment of the present invention.

[0023] Figure 3 for Figure 2 Sectional view along line III-III.

[0024] Figure 4 for Figure 2 A schematic diagram of the magnetic flux of the inductor component.

[0025] Figure 5 for Figure 2 A comparison chart of the inductance values ​​of the inductor component and the traditional inductor component.

[0026] Figure 6 This is a perspective view of the inductor assembly provided according to the second embodiment of the present invention.

[0027] Figure 7 for Figure 6 Sectional view along line VII-VII.

[0028] Figure 8 for Figure 6 A comparison chart of the inductance values ​​of the inductor component and the traditional inductor component.

[0029] Figure 9 This is a cross-sectional view of an inductor assembly provided according to the third embodiment of the present invention.

[0030] Figure 10 This is a cross-sectional view of the inductor assembly provided according to the fourth embodiment of the present invention.

[0031] Figure 11 for Figure 10 A comparison chart of the inductance values ​​of the inductor component and the traditional inductor component.

[0032] Figure 12 for Figure 10 A schematic diagram of the application circuit of the inductor component.

[0033] Figure 13 This is a perspective view of the inductor assembly provided according to the fifth embodiment of the present invention.

[0034] Figure 14 for Figure 13 A cross-sectional view of the inductor assembly along line XIV-XIV. Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of the "inductor component" provided by this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content provided in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the content provided is not intended to limit the scope of protection of this utility model.

[0036] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should be interpreted to include, as appropriate, any combination of one or more of the related listed items.

[0037] Figure 2 This is a perspective view of the inductor assembly provided according to the first embodiment of the present invention. Figure 3 for Figure 2 Sectional view along line III-III. See also Figure 2 and Figure 3 The inductor assembly 100 includes a first magnetic core 1, a second magnetic core 2, a third magnetic core 3, and a coil 4. The second magnetic core 2 faces the first magnetic core 1. The third magnetic core 3 is disposed between the first magnetic core 1 and the second magnetic core 2, and the coil 4 is located between the first magnetic core 1 and the second magnetic core 2 and surrounds the third magnetic core 3.

[0038] The first magnetic core 1 is U-shaped. Specifically, the first magnetic core 1 includes a first substrate 11 and two first sidewalls 12. The two first sidewalls 12 protrude from the first substrate 11 along a direction perpendicular to the first substrate 11 and are located at opposite ends of the first substrate 11.

[0039] The second magnetic core 2 has the same shape as the first magnetic core 1. Specifically, the second magnetic core 2 includes a second substrate 21 and two second sidewalls 22, and the two second sidewalls 22 protrude from the second substrate 21 along a direction perpendicular to the second substrate 21 and are located at opposite ends of the second substrate 21.

[0040] The two first sidewalls 12 of the first magnetic core 1 face and contact the two second sidewalls 22 of the second magnetic core 2, so that a winding space S is formed between the first magnetic core 1 and the second magnetic core 2.

[0041] The first magnetic core 1 is made of the same material as the second magnetic core 2. For example, the materials of the first magnetic core 1 and the second magnetic core 2 can be materials with a relative permeability greater than 500 and a saturation magnetic flux density less than 500 mT, such as ferrite.

[0042] The third magnetic core 3 is shaped like an I. Specifically, the third magnetic core 3 includes a vertical part 31, a first horizontal part 32 and a second horizontal part 33. The vertical part 31 is connected between the first horizontal part 32 and the second horizontal part 33, and the coil 4 is wrapped around the vertical part 31.

[0043] The cross-sectional area of ​​the first transverse portion 32 of the third magnetic core 3 is smaller than the cross-sectional area of ​​the first substrate 11 of the first magnetic core 1, and the cross-sectional area of ​​the second transverse portion 33 of the third magnetic core 3 is smaller than the cross-sectional area of ​​the second substrate 21 of the second magnetic core 2.

[0044] A first air gap G1 is formed between the first transverse portion 32 of the third magnetic core 3 and the first substrate 11 of the first magnetic core 1, and a second air gap G2 is formed between the second transverse portion 33 of the third magnetic core 3 and the second substrate 21 of the second magnetic core 2.

[0045] The material of the third magnetic core 3 is different from the material of the first magnetic core 1 and the second magnetic core 2, and the saturation magnetic flux density of the third magnetic core 3 is greater than that of the first magnetic core 1 and the second magnetic core 2. For example, the third magnetic core 3 is made of a material with a relative permeability in the range of 20 to 200 and a saturation magnetic flux density greater than 700 mT.

[0046] The inductor assembly 100 also includes a first pad P1 and a second pad P2. The materials of the first pad P1 and the second pad P2 are, for example, epoxy resin. The first pad P1 is disposed in the first air gap G1 and contacts the first transverse portion 32 and the first substrate 11. The second pad P2 is disposed in the second air gap G2 and contacts the second transverse portion 33 and the second substrate 21.

[0047] Figure 4 for Figure 2 A schematic diagram of the magnetic flux distribution of the inductor component 100. See also... Figure 4 When the magnetic flux B enters the first transverse portion 32 from the vertical portion 31 of the third magnetic core 3, a portion of the magnetic flux B will be dispersed to the left and right ends of the first transverse portion 32.

[0048] Similarly, when magnetic flux B enters the second horizontal section 33 from the vertical section 31, a portion of magnetic flux B will be distributed to the left and right ends of the second horizontal section 33.

[0049] In this way, the magnetic flux density entering the first magnetic core 1 and the magnetic flux density entering the second magnetic core 2 can be reduced, avoiding premature saturation of the magnetic flux density of the first magnetic core 1 and the second magnetic core 2, and avoiding premature decay of the inductance value of the inductor component 100.

[0050] In addition, the first air gap G1 located between the third magnetic core 3 and the first magnetic core 1 can also disperse the magnetic flux density into the first magnetic core 1, and the second air gap G2 located between the third magnetic core 3 and the second magnetic core 2 can also disperse the magnetic flux density into the second magnetic core 2, thereby preventing the inductance value of the inductor assembly 100 from decaying prematurely.

[0051] The first air gap G1 and the second air gap G2 can also reduce the magnetic flux through the winding copper wire of coil 4, thereby reducing the eddy current loss caused by the winding copper wire of coil 4 and increasing the efficiency of the inductor assembly 100.

[0052] Figure 5 for Figure 2 The graph compares the inductance values ​​of inductor component 100 with those of conventional inductor components. The inductance value trend L1 of the conventional inductor component begins to decrease when the DC bias current reaches approximately 15.5 amperes. Figure 2 The inductance value trend L2 of the inductor component 100 only begins to decrease when the DC bias current reaches approximately 20 amperes. Therefore, it can be concluded that... Figure 2 The inductor component 100 does indeed delay the point at which the inductance value begins to decay.

[0053] Figure 6 This is a perspective view of the inductor assembly provided according to the second embodiment of the present invention. Figure 7 for Figure 6 Sectional view along line VII-VII. Figure 6 Inductor component 200 and Figure 2 The differences between the inductor components 100 are as follows.

[0054] The first substrate 11 of the first magnetic core 1 has a first groove 111 on the side facing the second substrate 21, and the second substrate 21 has a second groove 211 on the side facing the first substrate 11.

[0055] The first transverse portion 32 and the second transverse portion 33 of the third magnetic core 3 are located within the first groove 111 of the first magnetic core 1 and the second groove 211 of the second magnetic core 2, respectively. In this way, the first transverse portion 32 and the second transverse portion 33, which have a higher saturation magnetic flux density, can effectively disperse the magnetic flux density of the first magnetic core 1 and the second magnetic core 2, which have lower saturation magnetic flux densities, without occupying additional winding space S. The magnetic flux exists only within the space of the first magnetic core 1 and the second magnetic core 2 and will not flow to the outside, causing heat generation in external devices.

[0056] A first air gap G1 is formed between the vertical portion 31 of the third magnetic core 3 and the first transverse portion 32, and a second air gap G2 is formed between the vertical portion 31 of the third magnetic core 3 and the second transverse portion 33.

[0057] The first gasket P1 is disposed in the first air gap G1 and contacts the first transverse portion 32 and the vertical portion 31, and the second gasket P2 is disposed in the second air gap G2 and contacts the second transverse portion 33 and the vertical portion 31.

[0058] The first air gap G1 located between the third magnetic core 3 and the first magnetic core 1 can disperse the magnetic flux density entering the first magnetic core 1, and the second air gap G2 located between the third magnetic core 3 and the second magnetic core 2 can further disperse the magnetic flux density entering the second magnetic core 2, thereby delaying the time point when the inductance value of the inductor component 200 begins to decay.

[0059] The setting of the first air gap G1 and the second air gap G2 can also reduce the magnetic flux through the winding copper wire of coil 4, thereby reducing the eddy current loss caused by the winding copper wire of coil 4 and increasing the efficiency of the inductor assembly 200.

[0060] Figure 8 for Figure 6 The graph compares the inductance values ​​of the inductor component 200 with those of a conventional inductor component. The inductance value trend L1 of the conventional inductor component begins to decrease when the DC bias current reaches approximately 15.5 amperes. Figure 6 The inductance value trend L3 of the inductor component 200 only begins to decrease when the DC bias current reaches approximately 22 amperes. Therefore, it can be concluded that... Figure 6 The inductor component 200 does indeed delay the time when the inductance value of the inductor component 200 begins to decay.

[0061] Figure 9 This is a cross-sectional view of the inductor assembly provided according to the third embodiment of the present invention. (Comparison) Figure 9 Inductor component 300 and Figure 6 The differences of the inductor component 200 are as follows.

[0062] There is a third air gap G3 between the first transverse portion 32 of the third magnetic core 3 and the wall of the first groove 111 of the first magnetic core 1, and there is a fourth air gap G4 between the second transverse portion 33 of the third magnetic core 3 and the wall of the second groove 211.

[0063] The third air gap G3 located between the third magnetic core 3 and the first magnetic core 1 can disperse the magnetic flux density entering the first magnetic core 1, and the fourth air gap G4 located between the third magnetic core 3 and the second magnetic core 2 can disperse the magnetic flux density entering the second magnetic core 2, thereby delaying the time point at which the inductance value of the inductor assembly 300 begins to decay.

[0064] Figure 10This is a cross-sectional view of an inductor assembly provided according to the fourth embodiment of the present invention. The inductor assembly 400 has two phases and includes a first magnetic core 1, a second magnetic core 2, two third magnetic cores 3, and two coils 4. The second magnetic core 2 is arranged longitudinally with the first magnetic core 1 and faces the first magnetic core 1. The plurality of third magnetic cores 3 are arranged spaced apart from each other in a transverse direction between the first magnetic core 1 and the second magnetic core 2, and the transverse direction is perpendicular to the longitudinal direction. The two coils 4 are located between the first magnetic core 1 and the second magnetic core 2 and respectively surround the two third magnetic cores 3.

[0065] The material of the first magnetic core 1 is the same as that of the second magnetic core 2, and the saturation magnetic flux density of the first magnetic core 1 is the same as that of the second magnetic core 2.

[0066] The first substrate 11 of the first magnetic core 1 has two first grooves 111 on the side facing the second substrate 21, while the second substrate 21 of the second magnetic core 2 has two second grooves 211 on the side facing the first substrate 11.

[0067] Each third magnetic core 3 is shaped like an I. The material of each third magnetic core 3 is different from the material of the first magnetic core 1 and the second magnetic core 2. The saturation magnetic flux density of each third magnetic core 3 is greater than the saturation magnetic flux density of the first magnetic core 1 and the second magnetic core 2.

[0068] Each third magnetic core 3 includes a vertical portion 31, a first horizontal portion 32, and a second horizontal portion 33, with the first horizontal portion 32 and the second horizontal portion 33 located on either side of the vertical portion 31. Two coils 4 are respectively wrapped around the two vertical portions 31 of the two third magnetic cores 3.

[0069] The sum of the cross-sectional areas of the two first transverse portions 32 is less than the cross-sectional area of ​​the first substrate 11, and the sum of the cross-sectional areas of the two second transverse portions 33 is less than the cross-sectional area of ​​the second substrate 21.

[0070] Two first transverse portions 32 are respectively located in two first grooves 111 of the first substrate 11, and two second transverse portions 33 are respectively located in two second grooves 211 of the second substrate 21.

[0071] Each third magnetic core 3 has a first air gap G1 between its first transverse portion 32 and its vertical portion 31. The first air gap G1 can disperse the magnetic flux density entering the first magnetic core 1, thereby delaying the time point at which the inductance value of the inductor assembly 400 begins to decay.

[0072] The second air gap G2 located between the third magnetic core 3 and the second magnetic core 2 can further disperse the magnetic flux density entering the second magnetic core 2, thereby delaying the time when the inductance value of the inductor assembly 400 begins to decay.

[0073] The inductor assembly 400 also includes two first pads P1 and two second pads P2. The two first pads P1 are respectively disposed in the two first air gaps G1 and contact the first transverse portion 32 and the vertical portion 31. The two second pads P2 are respectively disposed in the two second air gaps G2 and contact the second transverse portion 33 and the vertical portion 31.

[0074] Similarly, when the inductor assembly has three phases, the number of the third magnetic core 3 and the coil 4 is three, the number of the first groove 111 and the second groove 211 is three, and the number of the first pad P1 and the second pad P2 is three.

[0075] Figure 11 for Figure 10 The graph compares the inductance values ​​of the 400 inductor component with those of a conventional inductor component. The inductance value trend L1 of the conventional inductor component begins to decrease when the DC bias current reaches approximately 15.5 amperes. Figure 10 The inductance value trend L4 of the 400 inductor component only begins to decrease when the DC bias current reaches approximately 20 amperes. Therefore, it can be concluded that... Figure 9 The 400 inductor component does indeed delay the point at which the inductance value begins to decay.

[0076] Figure 12 for Figure 10 A schematic diagram of the application circuit of the inductor component 400. Figure 12 A bridgeless power factor correction circuit is provided, comprising a power supply S, multiple diodes D1 to D6, two transistors T1 and T2, a capacitor C, a resistor R, and an inductor assembly 400. The two ends of the power supply S are coupled to two coils 4 of the inductor assembly 400. The anode of diode D1 is connected to the anode of diode D2, while the cathodes of diodes D1 and D2 are respectively connected to the two coils 4. The drain and source of transistor T1 are connected to the cathode and anode of diode D3, respectively, while the drain and source of transistor T2 are connected to the cathode and anode of diode D4, respectively. The drain of transistor T1 is connected to coil 4, while the drain of transistor T2 is connected to another coil 4. The source of transistor T1 is connected to the anodes of diodes D1 and D2, while the source of transistor T2 is connected to the anodes of diodes D1 and D2.

[0077] The anodes of diodes D5 and D6 are connected to the two coils 4, respectively. The cathodes of diodes D5 and D6 are connected to the first electrode of capacitor C. The second electrode of capacitor C is connected to the source of transistors T1 and T2. The two ends of resistor R are connected to the first and second electrodes of capacitor C, respectively.

[0078] Figure 13 This is a perspective view of the inductor assembly provided according to the fifth embodiment of the present invention. Figure 14for Figure 13 A cross-sectional view along line XIV-XIV of the inductor assembly. The inductor assembly 500 includes a first magnetic core 1, a second magnetic core 2, two third magnetic cores 3, two coils 4, and a partition 5. The second magnetic core 2 is arranged longitudinally with the first magnetic core 1 and faces the first magnetic core 1. The partition 5 is disposed between the two third magnetic cores 3, and the two third magnetic cores 3 are arranged longitudinally at intervals between the first magnetic core 1 and the second magnetic core 2. The two coils 4 are located between the first magnetic core 1 and the second magnetic core 2 and respectively surround the two third magnetic cores 3.

[0079] The material of the first magnetic core 1 is the same as that of the second magnetic core 2, and the saturation magnetic flux density of the first magnetic core 1 is the same as that of the second magnetic core 2.

[0080] Each third magnetic core 3 is I-shaped. The material of each third magnetic core 3 is different from that of the first magnetic core 1 and the second magnetic core 2. The saturation magnetic flux density of each third magnetic core 3 is greater than that of the first magnetic core 1 and the second magnetic core 2. The material of the partition 5 is the same as that of the third magnetic core 3.

[0081] Each third magnetic core 3 includes a vertical portion 31, a first horizontal portion 32, and a second horizontal portion 33, with the first horizontal portion 32 and the second horizontal portion 33 respectively connected to the two ends of the vertical portion 31. Two coils 4 are respectively wrapped around the two vertical portions 31 of the two third magnetic cores 3.

[0082] The first transverse portion 32 of the third magnetic core 3 is located in the first groove 111 of the first substrate 11, while the second transverse portion 33 of the other third magnetic core 3 is located in the second groove 211 of the second substrate 21.

[0083] A first air gap G1 exists between the first transverse portion 32 of the third magnetic core 3 and the wall of the first groove 111 of the first magnetic core 1, while a second air gap G2 exists between the second transverse portion 33 of the other third magnetic core 3 and the wall of the second groove 211 of the second magnetic core 2.

[0084] The first air gap G1 can disperse the magnetic flux density into the first magnetic core 1, and the second air gap G2 can disperse the magnetic flux density into the second magnetic core 2, thereby delaying the time point at which the inductance value of the inductor component 500 begins to decay.

[0085] Beneficial effects of the embodiments

[0086] One of the advantages of this invention is that the inductor component provided by this invention has a first lateral portion and a second lateral portion with a high saturation magnetic flux density, which can effectively disperse the magnetic flux density entering the first magnetic core and the second magnetic core with a lower saturation magnetic flux density, while not occupying additional winding space. The magnetic flux exists only in the space within the first magnetic core and the second magnetic core, and will not flow to the outside and cause heat generation in external devices.

[0087] The above-described content is merely a preferred embodiment of the present utility model and is not intended to limit the claims of the present utility model. Therefore, all equivalent technical changes made based on the description and drawings of the present utility model are included within the scope of the claims of the present utility model.

Claims

1. An inductive component, characterized by The inductor assembly comprises: a first magnetic core; a second magnetic core facing the first magnetic core, the second magnetic core having the same material as the first magnetic core; a third magnetic core disposed between the first magnetic core and the second magnetic core, the third magnetic core having a different material from the first magnetic core and the second magnetic core, the third magnetic core comprising a vertical portion, a first horizontal portion, and a second horizontal portion, the vertical portion being connected between the first horizontal portion and the second horizontal portion; and a coil located between the first magnetic core and the second magnetic core and surrounding the third magnetic core; wherein a first air gap is formed between the first horizontal portion and the first magnetic core, and a second air gap is formed between the second horizontal portion and the second magnetic core.

2. The inductive component of claim 1, wherein, The first magnetic core comprises a first substrate and a plurality of first side walls protruding from the first substrate, and the second magnetic core comprises a second substrate and a plurality of second side walls protruding from the second substrate.

3. The inductive component of claim 2, wherein, The first horizontal portion has the first air gap with the first substrate, and the second horizontal portion has the second air gap with the second substrate.

4. The inductive component of claim 1, wherein, The third magnetic core has a saturation magnetic flux density greater than that of the first magnetic core and the second magnetic core.

5. The inductive component of claim 2, wherein, The first horizontal portion has a cross-sectional area smaller than that of the first substrate, and the second horizontal portion has a cross-sectional area smaller than that of the second substrate.

6. An inductive component, characterized by The inductor assembly comprises: a first magnetic core; a second magnetic core facing the first magnetic core, the second magnetic core having the same material as the first magnetic core; a third magnetic core disposed between the first magnetic core and the second magnetic core, the third magnetic core having a different material from the first magnetic core and the second magnetic core, the third magnetic core comprising a vertical portion, a first horizontal portion, and a second horizontal portion, the first horizontal portion and the second horizontal portion being located on two sides of the vertical portion, respectively; and a coil located between the first magnetic core and the second magnetic core and surrounding the third magnetic core; wherein the first magnetic core and the second magnetic core are respectively provided with a first groove and a second groove, the first horizontal portion and the second horizontal portion are located in the first groove and the second groove, respectively, a first air gap is formed between the vertical portion and the first horizontal portion, and a second air gap is formed between the vertical portion and the second horizontal portion.

7. The inductive component of claim 6, wherein, The first magnetic core comprises a first substrate and a plurality of first side walls protruding from the first substrate, and the second magnetic core comprises a second substrate and a plurality of second side walls protruding from the second substrate.

8. The inductive component of claim 6, wherein, The first horizontal portion has a third air gap with the first groove, and the second horizontal portion has a fourth air gap with the second groove.

9. The inductive component of claim 6, wherein, The third magnetic core has a saturation magnetic flux density greater than that of the first magnetic core and the second magnetic core.

10. The inductive component of claim 7, wherein, The first lateral portion has a cross-sectional area smaller than a cross-sectional area of the first substrate, and the second lateral portion has a cross-sectional area smaller than a cross-sectional area of the second substrate.

11. An inductive component, characterized by The inductive component includes: a first magnetic core; a second magnetic core disposed along a longitudinal direction and facing the first magnetic core, the second magnetic core having a same material as the first magnetic core; a plurality of third magnetic cores disposed between the first magnetic core and the second magnetic core along a transverse direction, each of the third magnetic cores having a different material from the first magnetic core and the second magnetic core, each of the third magnetic cores including a vertical portion, a first lateral portion, and a second lateral portion, the first lateral portion and the second lateral portion being located on two sides of the vertical portion, the transverse direction being perpendicular to the longitudinal direction; and a plurality of coils disposed between the first magnetic core and the second magnetic core and surrounding the plurality of third magnetic cores; wherein the first magnetic core is provided with a plurality of first grooves, the second magnetic core is provided with a plurality of second grooves, the plurality of first lateral portions are located in the plurality of first grooves, and the plurality of second lateral portions are located in the plurality of second grooves.

12. The inductive component of claim 11, wherein, The first magnetic core includes a first substrate and a plurality of first side walls protruding from the first substrate, and the second magnetic core includes a second substrate and a plurality of second side walls protruding from the second substrate.

13. The inductive component of claim 11, wherein, Each of the third magnetic cores has a first air gap between the first lateral portion and the vertical portion, and a second air gap between the second lateral portion and the vertical portion.

14. The inductive component of claim 11, wherein, Each of the third magnetic cores has a saturation magnetic flux density greater than a saturation magnetic flux density of the first magnetic core and a saturation magnetic flux density of the second magnetic core.

15. The inductive component of claim 12, wherein, The sum of cross-sectional areas of the plurality of first lateral portions is smaller than a cross-sectional area of the first substrate, and the sum of cross-sectional areas of the plurality of second lateral portions is smaller than a cross-sectional area of the second substrate.

Images