Magnetic assembly

Abstract

The utility model discloses a magnetic assembly, and the assembly comprises a housing which comprises an accommodation cavity and an opening; the magnetic element comprises a magnetic core and a winding, the winding is wound on a wrapping post of the magnetic core, the magnetic element is at least partially arranged in the accommodating cavity, and the top surface of the magnetic element is exposed through the opening; the heat-conducting glue is filled between the magnetic element and the shell, and the magnetic element conducts heat to the shell through the heat-conducting glue; the metal cover plate is arranged above the magnetic element; and the heat conduction cushion block is arranged between the top surface of the magnetic element and the metal cover plate, and the heat conduction cushion block is used for conducting heat of the magnetic element, especially the magnetic core, to the metal cover plate. According to the invention, the heat dissipation of the surface, exposed out of the shell, of the magnetic element is enhanced through the heat conduction cushion block, so that multiple surfaces of the magnetic element have heat dissipation paths, and the heat dissipation effect of the magnetic assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic component technical field, especially relate to a magnetic assembly. BACKGROUND

[0002] The current industry's magnetic component heat dissipation mode is: placing the magnetic component in a shell, and filling the gap between the magnetic component and the shell with heat-conducting glue. Figure 1 As shown in the figure, the top of the shell A is in open form, the periphery and the bottom are cavity walls S1, the magnetic component B is in the shell A, the five surfaces S2 of the magnetic component B have a gap with the wall S1 of the shell A respectively, and heat is transferred through the heat-conducting glue filled in the gap, so that the heat of the magnetic component B is conducted out through the cavity walls S1 of the shell A, and the top S3 of the magnetic component B has poor heat dissipation ability and relatively high temperature rise because it is far away from the cavity walls S1 of the shell A. Therefore, a magnetic assembly with stronger heat dissipation is needed to be developed. SUMMARY

[0003] The purpose of the present application is to provide a magnetic assembly which can solve one or more defects of the prior art.

[0004] In order to achieve the above-mentioned purpose, the present application provides a magnetic assembly, comprising: a shell including a receiving cavity and an opening provided on the top of the shell; a magnetic component including a magnetic core and a winding, the winding being wound on the winding post of the magnetic core, the magnetic component being at least partially disposed in the receiving cavity, the top surface of the magnetic component being exposed through the opening; heat-conducting glue filled between the magnetic component and the shell, the magnetic component conducting heat to the shell through the heat-conducting glue; a metal cover plate provided above the magnetic component and opposite to the opening; and a heat-conducting pad provided between the top surface of the magnetic component and the metal cover plate, the heat-conducting pad being used for conducting heat of the magnetic component to the metal cover plate. The present application conducts heat of the magnetic component exposed on one side of the shell through the heat-conducting pad, so that the magnetic component has heat dissipation paths on multiple surfaces, and the heat dissipation effect of the magnetic assembly is improved.

[0005] According to an embodiment of the present application, the magnetic core includes a magnetic cover and a winding post, the winding is wound on the winding post, the top surface of the magnetic cover is exposed through the opening, and the heat-conducting pad is used for conducting heat of the magnetic core to the metal cover plate.

[0006] According to an embodiment of the present application, the magnetic assembly further comprises a plastic cover plate, the plastic cover plate is attached to the top surface of the magnetic cover and connected to the shell, the plastic cover plate is provided with a window, and therefore the heat-conducting pad is arranged in the window.

[0007] According to an embodiment of the present application, the top surface of the magnetic cover is attached with a copper sheet, an aluminum sheet or a stainless steel sheet.

[0008] According to an embodiment of the present application, the heat conductivity of the heat-conducting glue is greater than or equal to 0.1 W / (m.k).

[0009] According to an embodiment of the present invention, the thermally conductive pad is an elastic insulating thermally conductive pad.

[0010] According to an embodiment of the present invention, the thermal conductivity of the thermal pad is ≥0.1 W / (mK).

[0011] According to an embodiment of the present invention, the housing is a metal housing.

[0012] According to an embodiment of the present invention, the metal shell is a copper shell, an aluminum shell or an aluminum alloy shell.

[0013] The magnetic component provided in this case sets a thermal pad between the magnetic element and the metal cover, so that the heat on the top of the magnetic element is transferred to the metal cover and dissipated, so that the magnetic element has the function of six-sided omnidirectional heat conduction and enhances the heat dissipation capacity of the magnetic element. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution implemented in this case, the following is a brief introduction to the drawings required for use in the embodiments.

[0015] Figure 1 A schematic structural diagram of a magnetic assembly in the prior art;

[0016] Figure 2 A schematic diagram of the structure of the magnetic component of this case;

[0017] Figure 3-4 A schematic diagram of the plastic cover being attached to the magnetic component;

[0018] Figure 5 Schematic diagram of a metal sheet attached to the surface of a magnetic component. DETAILED DESCRIPTION

[0019] Example embodiments will now be described more fully with reference to the accompanying drawings, however, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully and completely convey the concepts of the example embodiments to those skilled in the art.

[0020] The use of the terms "one" and "the" and "at least one" and "one or more" preceding an element or intervention are intended to denote the existence of said element or intervention at least once during the relevant time period, unless otherwise indicated. The terms "comprising," "including," and "having" are intended to be open-ended transitional phrases that do not exclude additional elements or interventions. Furthermore, the use of the term "first," "second," and the like does not limit the number for its objects. The same numbers are used to represent the same or similar components throughout the drawings. On the other hand, well-known components and steps are not described in the embodiments to avoid unnecessarily obscuring the present disclosure. In addition, some known conventional structures and elements are shown in the drawings in a simplified manner for the sake of simplicity.

[0021] The present disclosure provides a magnetic assembly, which includes a housing, a magnetic element, a thermal conductive glue, a metal cover plate, and a thermal conductive pad. The housing includes a receiving cavity and an opening disposed on the top of the housing. The magnetic element includes a magnetic core and a winding, and the winding is wound on the winding post of the magnetic core. The magnetic element is at least partially disposed in the receiving cavity of the housing, and the top surface of the magnetic element is exposed through the opening. The thermal conductive glue is filled between the magnetic element and the inner surface of the housing, and the magnetic element conducts heat to the housing through the thermal conductive glue. The metal cover plate is disposed above the magnetic element and opposite to the opening. The thermal conductive pad is disposed between the top surface of the magnetic element and the metal cover plate, and the thermal conductive pad is used to conduct the heat of the magnetic core to the metal cover plate. The present disclosure exposes the magnetic element to one side of the housing through the thermal conductive pad for heat dissipation, so that the magnetic element has multiple heat dissipation paths, and the heat dissipation effect of the magnetic assembly is improved.

[0022] Figure 2 The structure diagram of the magnetic assembly of an embodiment of the present disclosure is shown. As shown in Figure 2 , the magnetic assembly 100 includes a housing 1, a magnetic element 2, a thermal conductive glue 3, a metal cover plate 4, and a thermal conductive pad 5. The top of the housing 1 is provided with an opening O, the magnetic element 2 is disposed in the receiving cavity of the housing 1, the top surface F of the magnetic element 2 is exposed through the opening O, the thermal conductive glue 3 is filled between the magnetic element 2 and the inner surface of the housing 1, the metal cover plate 4 is disposed above the magnetic element 2 and opposite to the opening O, and the thermal conductive pad 5 is disposed between the top surface F of the magnetic element 2 and the metal cover plate 4.

[0023] Continuing to refer to Figure 2 , the magnetic assembly 100 further includes a plastic cover plate 6, which is disposed between the magnetic element 2 and the metal cover plate 4. Specifically, the plastic cover plate 6 is attached to the top surface of the magnetic element 2 and connected to the housing 1, for example, through the mounting hole P and the screw hole on the housing 1 by screw locking and fixing, and the mounting hole of the metal cover plate 4 and other screw holes on the housing 1 are fixed by screw locking.

[0024] Figure 3-4 This is a schematic diagram of the plastic cover being attached to the magnetic component. Figure 3 As shown, the plastic cover 6 is located above the thermal conductive adhesive 3 and the magnetic element 2, and is attached to the top surface F of the magnetic element 2. A window W is provided on the plastic cover 6, and part of the top surface F of the magnetic element 2 is exposed through the window W. Figure 2 The thermal pad 5 is disposed in the window W and contacts the top surface F of the magnetic element 2 through the window W, so as to conduct the heat generated by the magnetic element 2 to the metal cover 4 through the top surface F. Figure 4 The thermal conductive adhesive 3 is not shown. Figure 4 As shown, the magnetic element 2 includes a magnetic core 21 and a winding 22, the winding 22 is wound on the winding pole of the magnetic core 21, and the plastic cover 6 is attached to the magnetic core portion of the top surface F of the magnetic element 2. In some embodiments, as Figure 5 As shown, the magnetic core 21 includes a magnetic cover 211 and a winding post 212 for winding the winding 22. The top surface F of the magnetic cover 211 is exposed to the shell 1 through the opening O at the top of the shell 1, and the heat of the magnetic core 21 is conducted to the metal cover plate 4 through the thermal pad 5.

[0025] In some embodiments, a metal sheet, such as a copper sheet, an aluminum sheet, or a stainless steel sheet, is attached to the surface of the magnetic element 2 to enhance the heat dissipation capability of the magnetic core 21 and the winding 22. Figure 5 As shown, the top surface F of the magnetic element 2 can be attached with a metal sheet C. In this embodiment, the top surface F of the magnetic element 2 is the top surface F of the magnetic core 21. Figure 2 and Figure 5 The thermal pad 5 contacts the metal sheet C and conducts the heat generated by the magnetic element 2, especially the magnetic core 21, to the metal cover 4 through the top surface F, thereby enhancing the heat dissipation capability.

[0026] In some embodiments, thermally conductive adhesive 3 is made of a flowable material that is cured. Specifically, magnetic element 2 is placed within housing 1, with a gap between magnetic element 2 and the inner surface of housing 1. A flowable adhesive is injected into the gap and cured to form thermally conductive adhesive 3. Preferably, the thermal conductivity of thermally conductive adhesive 3 is ≥ 0.1 W / (mK).

[0027] In some embodiments, the thermal pad 5 is an elastic insulating thermal pad, or the thermal pad 5 is formed by curing a low-fluidity colloid. For example, the low-fluidity colloid is applied to the top surface F of the magnetic element 2 exposed by the window W of the plastic cover and cured to form the thermal pad 5. Preferably, the thermal conductivity of the thermal pad 5 is ≥0.1 W / (mK).

[0028] In some embodiments, the housing 1 is made of metal, such as copper, aluminum, or aluminum alloy.

[0029] In addition, the magnetic components described in this case are not limited to transformers, but can also be inductors, integrated magnetic components of inductors and inductors, integrated magnetic components of inductors and transformers, and integrated magnetic components of transformers and transformers.

[0030] The magnetic assembly provided in this application incorporates a thermal pad between the magnetic component and the metal cover, allowing heat from the magnetic component to be transferred to the metal cover through the top and dissipated. This allows the magnetic component to conduct heat on all six sides, enhancing its heat dissipation capacity. For example, using this six-sided heat dissipation solution can reduce the maximum temperature of an 11kW transformer by over 15°C compared to a traditional five-sided heat dissipation solution.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of protection of the present invention shall be based on the scope defined by the appended claims.

Claims

1. A magnetic component, characterized in that: include: a housing, comprising a receiving cavity and an opening; a magnetic element, comprising a magnetic core and a winding, wherein the winding is disposed on the magnetic core, the magnetic element is at least partially disposed in the accommodating cavity, and a top surface of the magnetic element is exposed through the opening; Thermally conductive adhesive is filled between the magnetic element and the shell, and the magnetic element conducts heat to the shell through the thermally conductive adhesive; a metal cover plate, disposed above the magnetic element and opposite to the opening; as well as A heat-conducting pad is provided between the top surface of the magnetic element and the metal cover plate, and is used for conducting heat of the magnetic element to the metal cover plate.

2. The magnetic assembly according to claim 1, wherein: The magnetic core includes a magnetic cover and a winding post, the winding is wound on the winding post, the top surface of the magnetic cover is exposed through the opening, and the thermal pad is used to conduct the heat of the magnetic core to the metal cover.

3. The magnetic assembly according to claim 2, wherein: It also includes a plastic cover plate, which is attached to the top surface of the magnetic cover and connected to the shell. The plastic cover plate is provided with a window, and the thermal pad is provided in the window.

4. The magnetic assembly according to claim 2, wherein: A copper sheet, an aluminum sheet or a stainless steel sheet is attached to the top surface of the magnetic cover.

5. The magnetic assembly according to claim 1, wherein: The thermal conductivity of the thermally conductive adhesive is ≥0.1 W / (mk).

6. The magnetic assembly according to claim 1, wherein: The thermally conductive pad is an elastic insulating thermally conductive pad.

7. The magnetic assembly according to claim 1, wherein: The thermal conductivity of the thermally conductive pad is ≥0.1W / (mk).

8. The magnetic assembly according to claim 1, wherein: The shell is a metal shell.

9. The magnetic assembly according to claim 8, wherein: The metal shell is a copper shell, an aluminum shell or an aluminum alloy shell.

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