Inductor assembly and power supply module

Abstract

The utility model discloses an inductor assembly and a power supply module, and relates to the technical field of power supply equipment. The inductor assembly comprises a magnetic core, a winding and at least one signal transmission conductor, at least one conductor channel penetrating through the magnetic core is arranged in the magnetic core, the signal transmission conductor is embedded in the conductor channel and provided with at least two connecting ends, the conductor channel is provided with at least two openings, and the connecting ends correspond to the openings in a one-to-one mode and are exposed out of the openings. In the embodiment of the utility model, as the signal transmission conductor is wrapped by the magnetic core, only the connecting end is exposed from the surface of the magnetic core, and the surface, exposed through each opening, of the single signal transmission conductor is discontinuous. Compared with the mode that the signal transmission conductor is arranged on the outer surface of the magnetic core, the arrangement mode has the advantages that the magnetic core and the signal transmission conductor are more compact, and miniaturization of the inductor assembly is facilitated. The power supply module provided by the embodiment of the invention comprises the inductor assembly, so that the power supply module has the advantages of small size and good performance.

Description

Technical Field

[0001] This application relates to the technical field of power supply devices, and more particularly, to an inductor component and a power module. Background Art

[0002] As electronic products become smaller in size and higher in power, electronic components are also developing towards smaller size and higher power. The demand for inductors tends to be low loss, small size, and large current, and still maintain excellent temperature rise current and saturation current characteristics in high-frequency and high-temperature environments, with a wider working frequency coverage range. In the related art, several signal transmission conductors are arranged around the magnetic core for signal transmission. However, this arrangement limits the miniaturization of the inductor component. Summary of the Utility Model

[0003] The objectives of this application include providing an inductor component and a power module, which are conducive to realizing the miniaturization of the inductor component.

[0004] The embodiments of this application can be implemented as follows:

[0005] In a first aspect, this application provides an inductor component, including a magnetic core, a winding, and at least one signal transmission conductor. Among them, at least one conductor channel penetrating the magnetic core is provided in the magnetic core, the signal transmission conductor is embedded in the conductor channel, the signal transmission conductor has at least two connection ends, the conductor channel has at least two openings, and the connection ends correspond to the openings one by one and are exposed from the openings.

[0006] In an alternative embodiment, the magnetic core has opposite top and bottom surfaces and an outer side surface connecting between the top and bottom surfaces. At least one of the conductor channels is a through hole extending from the top surface to the bottom surface, at least one of the signal transmission conductors is a strip structure, the two ends of the signal transmission conductor are the two connection ends respectively, and the two connection ends of the signal transmission conductor are respectively exposed from the two openings of the conductor channel on the top surface and the bottom surface.

[0007] In an alternative embodiment, the magnetic core has opposite top and bottom surfaces and an outer side surface connecting between the top and bottom surfaces. At least one of the conductor channels has an opening on the outer side surface, and at least one of the connection ends of at least one of the signal transmission conductors is exposed from the opening of the conductor channel on the outer side surface.

[0008] In an alternative embodiment, at least one of the conductor channels has three openings located on the top surface, the bottom surface, and the outer side surface, at least one of the signal transmission conductors has three connection ends, and the three connection ends of the signal transmission conductor are respectively exposed from the openings of the conductor channel on the top surface, the bottom surface, and the outer side surface.

[0009] In an alternative embodiment, a plurality of the signal transmission conductors are arranged at intervals in the circumferential direction of the magnetic core along the outer side surface.

[0010] In an alternative embodiment, the signal transmission conductor is in a straight strip shape, an arc strip shape, a folded strip shape, a plate shape, or a sheet shape.

[0011] In an alternative embodiment, the magnetic core has a cuboid structure.

[0012] In an alternative embodiment, the cross-section of the signal transmission conductor is rectangular.

[0013] In an alternative embodiment, the winding is wrapped by the magnetic core and two ends of the winding are exposed from the surface of the magnetic core;

[0014] Alternatively, the winding is disposed on the surface of the magnetic core.

[0015] In a second aspect, the present application provides a power module, including a circuit board and the inductance component according to any one of the foregoing embodiments, and the winding and the signal transmission conductor of the inductance component are both electrically connected to the circuit board.

[0016] The beneficial effects of the inductance component and the power module provided by the embodiments of the present application include:

[0017] The inductance component provided by the embodiments of the present application includes a magnetic core, a winding, and at least one signal transmission conductor. Among them, at least one conductor channel penetrating the magnetic core is provided in the magnetic core, the signal transmission conductor is embedded in the conductor channel, the signal transmission conductor has at least two connection ends, the conductor channel has at least two openings, and the connection ends correspond to the openings one by one and are exposed from the openings. In the embodiments of the present application, since the signal transmission conductor is wrapped by the magnetic core and only the connection ends are exposed from the surface of the magnetic core, the surfaces of a single signal transmission conductor exposed through the respective openings are not continuous. Compared with the case where the signal transmission conductor is disposed on the outer surface of the magnetic core, this setting method makes the magnetic core and the signal transmission conductor more compact, which is beneficial to the miniaturization of the inductance component. Moreover, since the signal transmission conductor is wrapped by the magnetic core, the signal transmission conductor has better stability. In addition, the inner wall surface of the conductor channel fits with the signal transmission conductor, so there is a larger contact area between the signal transmission conductor and the magnetic core, which is beneficial to the heat dissipation of the signal transmission conductor and increases the current capacity of the inductance component.

[0018] The power module provided by the embodiment of the present application includes the above-mentioned inductance component, so it has the advantages of small volume and good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the inductance component in the first perspective for an embodiment of the present application;

[0021] Figure 2 Schematic diagram of the inductance component in the second perspective for an embodiment of the present application;

[0022] Figure 3 Schematic diagram of the magnetic core for an embodiment of the present application;

[0023] Figure 4 Schematic diagram of the straight strip-shaped signal transmission conductor for an embodiment of the present application;

[0024] Figure 5 Schematic diagram of the folded strip-shaped signal transmission conductor for an embodiment of the present application;

[0025] Figure 6 Schematic diagram of the arc-shaped strip-shaped signal transmission conductor for an embodiment of the present application;

[0026] Figure 7 Schematic diagram of the magnetic core for another embodiment of the present application;

[0027] Figure 8 Schematic diagram of the signal transmission conductor with three connection ends for an embodiment of the present application;

[0028] Figure 9 Schematic diagram of the arrangement of the signal transmission conductor and the winding for an embodiment of the present application;

[0029] Figure 10 Schematic diagram of the power module for an embodiment of the present application.

[0030] Reference numerals: 010 - power module; 100 - inductance component; 110 - magnetic core; 111 - top surface; 112 - bottom surface; 113 - outer side surface; 114 - conductor channel; 115 - winding installation channel; 120 - winding; 130 - signal transmission conductor; 131 - connection end; 200 - first circuit board; 210 - power device; 220 - functional element; 300 - second circuit board. Detailed implementation manners

[0031] An inductance component includes a magnetic core and a signal transmission conductor. Generally, the signal transmission conductor is disposed on the outer side surface of the magnetic core. For example, in some related technologies, a groove is formed on the outer side surface of the magnetic core, and the signal transmission conductor is embedded in the groove body. In other related technologies, a plastic package is wrapped around the periphery of the magnetic core, and the plastic package is used to fix the signal transmission conductor. For example, the signal transmission conductor is clamped between the plastic package and the magnetic core, or the signal transmission conductor is inserted into the plastic package. In the above related technologies, the signal transmission conductor protrudes from the periphery of the magnetic core, which results in a relatively large volume of the inductance component, and the plastic package further increases the volume of the inductance component. In addition, the magnetic core can dissipate heat for the signal transmission conductor by absorbing the heat generated by the signal transmission conductor. However, the contact area between the signal transmission conductor and the magnetic core in the related technologies is limited, so the heat dissipation effect of the signal transmission conductor is poor and it is difficult to meet the large current demand.

[0032] Therefore, an embodiment of the present application provides an inductance component. By inserting the signal transmission conductor into a conductor channel on the magnetic core, the signal transmission conductor is wrapped by the magnetic core, and only the connection end is exposed, so that the structure is more compact and is beneficial to miniaturization. In addition, since there is a large contact area between the signal transmission conductor and the magnetic core, it is beneficial to the heat dissipation of the signal transmission conductor and is beneficial to meeting the large current demand. In addition, an embodiment of the present application further provides a power module, including the above-mentioned inductance component.

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0035] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present application, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0037] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0038] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0039] Figure 1 It is a schematic diagram of the inductor assembly 100 in a first perspective in an embodiment of the present application; Figure 2 It is a schematic diagram of the inductor assembly 100 in a second perspective in an embodiment of the present application; Figure 3 It is a schematic diagram of the magnetic core 110 in an embodiment of the present application. As Figures 1 to 3 shown, the inductor assembly 100 provided in the embodiment of the present application includes a magnetic core 110, a winding 120, and at least one signal transmission conductor 130. Among them, at least one conductor channel 114 penetrating the magnetic core 110 is provided in the magnetic core 110, the signal transmission conductor 130 is embedded in the conductor channel 114, the signal transmission conductor 130 has at least two connection ends 131, the conductor channel 114 has at least two openings, and the connection ends 131 correspond to the openings one by one and are exposed from the openings. Since the signal transmission conductor 130 is wrapped by the magnetic core 110 and only the connection ends 131 are exposed, the structure is more compact, which is beneficial to miniaturization; at the same time, the use of plastic encapsulation materials is also reduced, making the material cost lower.

[0040] In this embodiment, the magnetic core 110 has opposite top surface 111 and bottom surface 112 and outer side surfaces 113 connected between the top surface 111 and the bottom surface 112. In this embodiment, the magnetic core 110 is integrally in the shape of a cuboid. Therefore, its top surface 111 and bottom surface 112 are parallel to each other, and the four outer side surfaces 113 are connected in sequence. In alternative other embodiments, the magnetic core 110 can also be of other shapes. For example, the magnetic core 110 is cylindrical, its top surface 111 and bottom surface 112 are both flat surfaces, and the outer side surface 113 is a cylindrical surface.

[0041] Optionally, at least one conductor channel 114 is a through hole extending from the top surface 111 to the bottom surface 112, at least one signal transmission conductor 130 is a strip structure, the two ends of the signal transmission conductor 130 are respectively two connection ends 131, and the two connection ends 131 of the signal transmission conductor 130 are respectively exposed from the two openings of the conductor channel 114 on the top surface 111 and the bottom surface 112. The connection end 131 can be used for electrical connection with an external electrical component.

[0042] Figure 4 Schematic diagram of the signal transmission conductor 130 in an embodiment of the present application. Combining Figure 3 and Figure 4 , in this embodiment, each conductor channel 114 on the magnetic core 110 is a through hole extending from the top surface 111 to the bottom surface 112, each signal transmission conductor 130 has two opposite ends forming two connection ends 131, and the two connection ends 131 of each signal transmission conductor 130 are respectively exposed from the top surface 111 and the bottom surface 112 of the magnetic core 110. In this embodiment, some of the several signal transmission conductors 130, such as Figure 4 shown, are strip structures, specifically straight strip structures. As Figure 1 and Figure 2 shown, there is also a part of the signal transmission conductor 130 that is a plate structure.

[0043] Figure 5 Schematic diagram of the folded strip-shaped signal transmission conductor 130 in an embodiment of the present application; Figure 6 Schematic diagram of the arc-shaped strip-shaped signal transmission conductor 130 in an embodiment of the present application. As Figure 5 and Figure 6 shown, it should be understood that in an alternative embodiment, the shape of the signal transmission conductor 130 is not limited to straight strip shape and plate shape, and can also be arc-shaped strip shape, folded strip shape or sheet shape.

[0044] In an alternative embodiment, at least one conductor channel 114 has an opening on the outer side surface 113, and at least one connection end 131 of at least one signal transmission conductor 130 is exposed from the opening of the conductor channel 114 on the outer side surface 113. Figure 7 Schematic diagram of the magnetic core 110 in another embodiment of the present application;

[0045] Figure 8 Schematic diagram of the signal transmission conductor 130 having three connection ends 131 in an embodiment of the present application. As Figure 7 and Figure 8As shown, the signal transmission conductor 130 may have three connection ends 131. At least one conductor channel 114 on the magnetic core 110 has three openings located on the top surface 111, the bottom surface 112, and the outer side surface 113, and the three connection ends 131 of the signal transmission conductor 130 are respectively exposed from the openings of the conductor channel 114 on the top surface 111, the bottom surface 112, and the outer side surface 113. More connection ends 131 are exposed from different surfaces of the magnetic core 110, which can provide more connection points and meet the more complex design of the power module 010. In other alternative embodiments, the signal transmission conductor 130 may also have more connection ends 131.

[0046] In this embodiment, the cross-section of each signal transmission conductor 130 is rectangular; in other alternative embodiments, the cross-section of the signal transmission conductor 130 may also be circular, elliptical, or other polygons.

[0047] In the embodiment of the present application, the connection end 131 of the signal transmission conductor 130 may protrude from the surface of the magnetic core 110, be flush with the surface of the magnetic core 110, or be lower than the surface of the magnetic core 110.

[0048] In the embodiment of the present application, the inner wall surface of the conductor channel 114 may be closely attached to the signal transmission conductor 130; when the connection end 131 of the signal transmission conductor 130 protrudes from the surface of the magnetic core 110 or is flush with the surface of the magnetic core 110, all the inner wall surfaces of the conductor channel 114 are closely attached to the signal transmission conductor 130, which can improve the heat dissipation effect of the signal transmission conductor 130 and thus better meet the large current demand.

[0049] Please refer back to Figures 1 to 3 , in this embodiment, a winding installation channel 115 is further provided on the magnetic core 110. The winding installation channel 115 penetrates through the magnetic core 110, the winding 120 is embedded in the winding installation channel 115, and both ends of the winding 120 are exposed from the two openings of the winding installation channel 115. In other words, the winding 120 is wrapped by the magnetic core 110 and both ends are exposed from the surface of the magnetic core 110 for connecting external electrical components. Specifically, the inductor assembly 100 in this embodiment includes two windings 120, and two winding installation channels 115 are provided on the magnetic core 110. The two openings of the winding installation channel 115 are respectively located on the top surface 111 and the bottom surface 112. In other alternative embodiments, the winding 120 may also be provided on the surface of the magnetic core 110, such as being attached or embedded on the outer side surface 113 of the magnetic core 110.

[0050] Figure 9 is a schematic diagram of the arrangement of the signal transmission conductor 130 and the winding 120 in an embodiment of the present application. As Figure 9 shown, in this embodiment, the winding 120 is in a zigzag shape. CombiningFigure 1 and Figure 9 As shown in Figure 9 , in this embodiment, a plurality of signal transmission conductors 130 are arranged at intervals in the circumferential direction of the magnetic core 110 along the outer side surface 113 of the magnetic core 110. In this embodiment, each signal transmission conductor 130 is used to transmit signals; in some embodiments, a part of the plurality of signal transmission conductors 130 can also be used to transmit power.

[0051] When manufacturing the inductor assembly 100 provided in the embodiment of the present application, the relative positions of the winding 120 and the signal transmission conductor 130 can be set first, and then the magnetic core 110 is formed by pressing on the outer sides of the winding 120 and the signal transmission conductor 130. As the magnetic core 110 is formed, a conductor channel 114 and a winding installation channel 115 are naturally formed and are closely attached to the signal transmission conductor 130 and the winding 120. Alternatively, the position of the winding 120 is set first, then the magnetic core 110 is formed by pressing on the outer side of the winding 120, and then a conductor channel 114 is opened on the magnetic core 110, and the signal transmission conductor 130 is inserted into the conductor channel 114 to form the inductor assembly 100. The latter method is suitable for the case where the signal transmission conductor 130 is straight.

[0052] Figure 10 It is a schematic diagram of a power module 010 in an embodiment of the present application. As Figure 10 shown, the power module 010 provided in the embodiment of the present application includes a circuit board and the inductor assembly 100 provided in the above embodiment, and both the winding 120 and the signal transmission conductor 130 of the inductor assembly 100 are electrically connected to the circuit board. Specifically, in this embodiment, the power module 010 includes a first circuit board 200 and a second circuit board 300. One part of the connection end 131 of the signal transmission conductor 130 is connected to the first circuit board 200, and the other part of the connection end 131 of the signal transmission conductor 130 is connected to the second circuit board 300, and the winding 120 is connected to at least one of the first circuit board 200 and the second circuit board 300. Further, a power device 210 is provided on the first circuit board 200.

[0053] In this embodiment, the first circuit board 200 and the second circuit board 300 are respectively arranged on the top surface 111 and the bottom surface 112 of the magnetic core 110. The first circuit board 200 is electrically connected to the connection end 131 of the signal transmission conductor 130 located on the top surface 111, and the second circuit board 300 is electrically connected to the connection end 131 of the signal transmission conductor 130 located on the bottom surface 112. In this embodiment, the winding 120 is electrically connected to the second circuit board 300. The power device 210 is arranged on the side of the first circuit board 200 facing away from the inductor assembly 100. In this embodiment, the number of power devices 210 is two, and this number can be adjusted as needed. In addition, a functional element 220 is also provided on the first circuit board 200, and the functional element 220 is used to implement the basic electrical functions of the power module 010.

[0054] In this embodiment, the signal transmission conductor 130 and the winding 120 can be connected to the corresponding circuit board by welding to achieve signal or power transmission.

[0055] In summary, the embodiment of the present application provides an inductance component 100 and a power module 010. The inductance component 100 includes a magnetic core 110, a winding 120, and at least one signal transmission conductor 130. Among them, at least one conductor channel 114 penetrating the magnetic core 110 is provided in the magnetic core 110. The signal transmission conductor 130 is embedded in the conductor channel 114. The signal transmission conductor 130 has at least two connection ends 131. The conductor channel 114 has at least two openings. The connection ends 131 correspond to the openings one by one and are exposed from the openings. In the embodiment of the present application, since the signal transmission conductor 130 is wrapped by the magnetic core 110, only the connection ends 131 are exposed from the surface of the magnetic core 110, and the surfaces of a single signal transmission conductor 130 exposed through the respective openings are discontinuous. Compared with the case where the signal transmission conductor 130 is arranged on the outer surface of the magnetic core 110, the magnetic core 110 and the signal transmission conductor 130 are more compact, which is beneficial to the miniaturization of the inductance component 100. Moreover, since the signal transmission conductor 130 is wrapped by the magnetic core 110, the signal transmission conductor 130 has better stability. In addition, the inner wall surface of the conductor channel 114 fits the signal transmission conductor 130. Therefore, there is a larger contact area between the signal transmission conductor 130 and the magnetic core 110, which is beneficial to the heat dissipation of the signal transmission conductor 130 and thus increases the current capacity of the inductance component 100.

[0056] The power module 010 provided by the embodiment of the present application includes the above-mentioned inductance component 100, so it has the advantages of small volume and good performance.

[0057] The above is only the specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered by the protection scope of the present application.

Claims

1. An inductance component, characterized in that, It includes a magnetic core, windings, and at least one signal transmission conductor. Among them, at least one conductor channel penetrating the magnetic core is provided inside the magnetic core, the signal transmission conductor is embedded in the conductor channel, the signal transmission conductor has at least two connection ends, the conductor channel has at least two openings, and the connection ends correspond to the openings one by one and are exposed from the openings.

2. The inductance component according to claim 1, wherein The magnetic core has opposite top and bottom surfaces and an outer side surface connected between the top and bottom surfaces. At least one of the conductor channels is a through hole extending from the top surface to the bottom surface, at least one of the signal transmission conductors is a strip structure, and the two ends of the signal transmission conductor are respectively the two connection ends, and the two connection ends of the signal transmission conductor are respectively exposed from the two openings of the conductor channel on the top surface and the bottom surface.

3. The inductance component according to claim 1, characterized in that The magnetic core has opposite top and bottom surfaces and an outer side surface connected between the top and bottom surfaces. At least one of the conductor channels has an opening located on the outer side surface, and at least one connection end of at least one of the signal transmission conductors is exposed from the opening of the conductor channel on the outer side surface.

4. The inductance component according to claim 3, wherein At least one of the conductor channels has three openings located on the top surface, the bottom surface, and the outer side surface. At least one of the signal transmission conductors has three connection ends, and the three connection ends of the signal transmission conductor are respectively exposed from the openings of the conductor channel on the top surface, the bottom surface, and the outer side surface.

5. The inductance component according to any one of claims 2-4, characterized in that, A plurality of the signal transmission conductors are arranged at intervals in the circumferential direction of the magnetic core along the outer side surface.

6. The inductance component according to claim 1, characterized in that, The signal transmission conductor is in a straight strip shape, an arc strip shape, a folded line strip shape, a plate shape, or a sheet shape.

7. The inductance component according to claim 1, wherein The magnetic core is in a cuboid structure.

8. The inductance component according to claim 1, characterized in that, The cross-section of the signal transmission conductor is rectangular.

9. The inductance component according to claim 1, wherein The windings are wrapped by the magnetic core and the two ends of the windings are exposed from the surface of the magnetic core; Or, the windings are arranged on the surface of the magnetic core.

10. A power module, characterized in that, It includes a circuit board and the inductor component according to any one of claims 1-9, and the windings and the signal transmission conductors of the inductor component are both electrically connected to the circuit board.

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