Frameless winding and magnetic assembly

Abstract

The application discloses a kind of no skeleton winding and magnetic assembly, wherein no skeleton winding includes first electrically conductive piece, the first electrically conductive piece is provided with first through hole;Second electrically conductive piece, the second electrically conductive piece is provided with second through hole, the second through hole is communicated with the first through hole to form a through hole;Resistance part, one end of the resistance part is fixedly connected with the first electrically conductive piece, the other end is fixedly connected with the second electrically conductive piece, to form a receiving cavity between the first electrically conductive piece and the second electrically conductive piece.The application can directly set the winding post in the through hole when magnetic assembly is assembled, at the same time, without setting skeleton in magnetic assembly, winding group can be directly wound on the outer peripheral surface of winding post in receiving cavity.Thereby, not only can the assembly efficiency of magnetic assembly be improved, but also the volume of magnetic assembly is reduced, and the technical problem that poor heat dissipation performance caused by increasing skeleton is avoided.

Description

Technical Field

[0001] This invention relates to the field of electronic components technology, and in particular to a frameless winding and a magnetic assembly. Background Technology

[0002] Currently, in low-voltage output server power supplies, due to the large current in the secondary winding of the transformer, a method such as... Figure 1 and Figure 2 The multiple sets of copper sheets Q shown are connected in parallel to increase the current carrying capacity of the transformer's secondary winding. The transformer's primary winding adopts a winding structure, wound around a bobbin B, which also serves to fix the position of each copper sheet. However, setting up a bobbin in the transformer compresses the winding space of the primary winding, thereby increasing the transformer's losses. At the same time, the bobbin has poor thermal conductivity, which is not conducive to the transformer's heat dissipation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a frameless winding and magnetic components, aiming to solve the technical problems of poor heat dissipation performance and limited winding space in the primary winding of existing transformers.

[0004] To address the above problems, in a first aspect, embodiments of the present invention provide a frameless winding, comprising:

[0005] A first conductive element, wherein the first conductive element is provided with a first through hole;

[0006] The second conductive element is provided with a second through hole, which communicates with the first through hole to form a through hole;

[0007] The abutment is fixedly connected at one end to the first conductive element and at the other end to the second conductive element, so as to form an accommodating cavity between the first conductive element and the second conductive element.

[0008] Furthermore, in the frameless winding, the first conductive element, the second conductive element, and the blocking part are integrally formed.

[0009] Furthermore, in the frameless winding, a first insulating layer is provided on the outer side of the first conductive element, the second conductive element, and the abutment portion.

[0010] Furthermore, in the frameless winding, the first conductive element is also provided with a first opening, and the second conductive element is also provided with a second opening; the first opening, the second opening, the first through hole, and the second through hole are connected.

[0011] Furthermore, in the frameless winding, the first conductive element is provided with a first pin, and the second conductive element is provided with a second pin. The first pin is located on both sides of the first opening, and the second pin is located on both sides of the second opening.

[0012] Secondly, embodiments of the present invention also provide a magnetic component, comprising:

[0013] As described in the first aspect, the frameless winding;

[0014] A magnetic core assembly, comprising a winding post disposed in the through hole; and

[0015] A winding assembly, wherein the winding assembly is wound around the outer circumferential surface of the winding post within the accommodating cavity.

[0016] Furthermore, in the magnetic component, the magnetic component further includes a third conductive element and a fourth conductive element. The third conductive element is provided with a third through hole, and the fourth conductive element is provided with a fourth through hole. The first through hole, the second through hole, the third through hole, and the fourth through hole are connected to form the through hole. The third conductive element and the fourth conductive element are respectively located on both sides of the frameless winding.

[0017] Furthermore, in the magnetic assembly, the winding assembly comprises a coil structure made of three layers of coils, and the coils are provided with a second insulating layer.

[0018] Furthermore, in the magnetic assembly, the magnetic core group further includes a first magnetic core portion and a second magnetic core portion, wherein the first magnetic core portion and the second magnetic core portion are fixedly connected.

[0019] Furthermore, in the magnetic assembly, the winding post includes a first winding post and a second winding post, wherein the first winding post and the first magnetic core portion are integrally formed, and the second winding post and the second magnetic core portion are integrally formed.

[0020] The frameless winding provided in this embodiment of the invention includes a first conductive element, a second conductive element, and a stop portion. The first conductive element has a first through hole, and the second conductive element has a second through hole. The first through hole and the second through hole communicate to form a through hole. The stop portion is fixedly connected to the first conductive element and the second conductive element to form an integral structure, and a receiving cavity is formed between the first conductive element and the second conductive element. This allows the winding post to be directly placed in the through hole during the assembly process of the magnetic component, without the need for a frame in the magnetic component. The winding assembly can be directly wound on the outer circumference of the winding post in the receiving cavity. This not only improves the assembly efficiency of the magnetic component but also reduces the volume of the magnetic component, while avoiding the technical problem of poor heat dissipation caused by adding a frame. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an existing magnetic component;

[0023] Figure 2 An exploded view of the existing magnetic components;

[0024] Figure 3 This is a schematic diagram of the structure of the frameless winding provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the flattened structure of the frameless winding provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the magnetic component provided in an embodiment of the present invention;

[0027] Figure 6 An exploded view of the magnetic component provided in an embodiment of the present invention;

[0028] Figure 7 A partial structural schematic diagram of the magnetic component provided in an embodiment of the present invention;

[0029] Figure 8 This is a partial exploded view of the magnetic component provided in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached diagram: Copper sheet is Q, skeleton is B, 101 is the first conductive element, 1011 is the first through hole, 1012 is the first opening, 1013 is the first pin, 102 is the second conductive element, 1021 is the second through hole, 1022 is the second opening, 1023 is the second pin, 103 is the blocking part, 104 is the third conductive element, 1041 is the third through hole, 1042 is the third opening, 1043 is the third pin, 105 is the fourth conductive element, 1051 is the fourth through hole, 1052 is the fourth opening, 1053 is the fourth pin, 201a is the first magnetic core, 201b is the second magnetic core, 202a is the first winding post, 202b is the second winding post, and 30 is the winding group. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0033] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0035] Please see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of the frameless winding provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the flattened structure of the frameless winding provided in an embodiment of the present invention. Figure 3 and Figure 4 As shown, a frameless winding includes:

[0036] A first conductive element 101 is provided with a first through hole 1011;

[0037] The second conductive element 102 is provided with a second through hole 1021, which communicates with the first through hole 1011 to form a through hole.

[0038] The blocking part 103 has one end fixedly connected to the first conductive member 101 and the other end fixedly connected to the second conductive member 102, so as to form an accommodating cavity between the first conductive member 101 and the second conductive member 102.

[0039] The first through hole 1011 can be located in the middle of the first conductive member 101, and the second through hole 1021 can be located in the middle of the second conductive member 102. The first conductive member 101 and the second conductive member 102 can be arranged in parallel. The abutment part 103 is used to fix the first conductive member 101 and the second conductive member 102 into an integrated structure and form a U-shaped accommodating cavity between the first conductive member 101 and the second conductive member 102. This allows the frameless winding to be wound directly around the through hole in the accommodating cavity when applied to a magnetic component, and is limited by the abutment part 103.

[0040] Specifically, the first conductive element 101 and the second conductive element 102 can be used as secondary windings in the magnetic assembly. In this embodiment, the first conductive element 101 and the second conductive element 102 are preferably copper sheets. The accommodating cavity formed by the first conductive element 101 and the second conductive element 102 through the blocking part 103 can be directly used as the cavity for the primary winding of the magnetic assembly.

[0041] In some embodiments, such as Figure 2 As shown, the first conductive element 101, the second conductive element 102, and the blocking part 103 are integrally formed.

[0042] Specifically, the first conductive element 101, the second conductive element 102, and the blocking part 103 can be integrally formed by stamping, or integrally formed by welding, or the first conductive element 101, the second conductive element 102, and the blocking part 103 can be fixed integrally formed by other means.

[0043] In this embodiment, the first conductive element 101, the second conductive element 102, and the blocking part 103 are preferably integrally formed by stamping. After the first conductive element 101, the second conductive element 102, and the blocking part 103 are integrally formed by stamping, the first conductive element 101 and the blocking part 103, and the second conductive element 102 and the blocking part 103 can be bent directly to form a U-shaped accommodating cavity between the first conductive element 101 and the second conductive element 102.

[0044] In some embodiments, such as Figure 3 and Figure 4As shown, the first conductive element 101 is further provided with a first opening 1012, and the second conductive element 102 is further provided with a second opening 1022; the first opening 1012, the second opening 1022, the first through hole 1011, and the second through hole 1021 are connected. The first conductive element 101 has the first opening 1012, and the second conductive element 102 has the second opening 1022, which helps prevent short circuits in the magnetic assembly after the frameless winding is assembled into it. Furthermore, the first opening 1012 extends from the outermost periphery of the first conductive element 101 to the bottom of the uppermost end of the first through hole 1011, and the second opening 1022 extends from the outermost periphery of the second conductive element 102 to the bottom of the uppermost end of the second through hole 1021.

[0045] In some specific embodiments, such as Figure 3 and Figure 4 As shown, the first conductive element 101 is further provided with a first pin 1013, and the second conductive element 102 is further provided with a second pin 1023. The first pin 1013 is located on both sides of the first opening 1012, and the second pin 1023 is located on both sides of the second opening 1022.

[0046] Specifically, two first pins 1013 can be provided on the first conductive element 101, and the two first pins 1013 can be located on both sides of the first opening 1012 respectively. Two second pins 1023 can be provided on the second conductive element 102, and the two second pins 1023 can be located on both sides of the second opening 1022 respectively. The first pins 1013 and the second pins 1023 can be used to make electrical connections between the frameless winding and other electronic components.

[0047] In some embodiments, such as Figure 5 and Figure 6 As shown, this embodiment of the invention also provides a magnetic component, which includes:

[0048] A first conductive element 101 is provided with a first through hole 1011;

[0049] The second conductive element 102 is provided with a second through hole 1021, which communicates with the first through hole 1011 to form a through hole.

[0050] A blocking part 103, one end of which is fixedly connected to the first conductive member 101 and the other end of which is fixedly connected to the second conductive member 102, so as to form an accommodating cavity between the first conductive member 101 and the second conductive member 102;

[0051] A magnetic core assembly, the magnetic core assembly including a winding post, the winding post being disposed in the through hole;

[0052] The winding assembly 30 is wound around the outer circumferential surface of the winding post within the accommodating cavity.

[0053] In this embodiment, the frameless winding formed by the first conductive element 101, the second conductive element 102, and the blocking part 103 can serve as the secondary winding of the magnetic assembly, and the winding group 30 can serve as the primary winding of the magnetic assembly. During the assembly process of the magnetic assembly, the winding post can be directly placed in the through hole, and there is no need to set a frame in the magnetic assembly. The winding group 30 can be directly wound on the outer circumferential surface of the winding post in the accommodating cavity. This not only improves the assembly efficiency of the magnetic assembly but also reduces the volume of the magnetic assembly, while avoiding the technical problem of poor heat dissipation performance of the transformer caused by adding a frame.

[0054] It should be noted that the magnetic component provided in this application embodiment can be, but is not limited to, a transformer, and can also be an inductor or a filter, etc. Furthermore, the magnetic component provided in this application embodiment can include multiple frameless windings, with all through holes of each frameless winding interconnected. The winding posts in the core assembly can be directly disposed in the through holes. Each cavity formed by the frameless winding can contain a winding group 30, and each winding group 30 can be individually wound around the outer circumference of the winding post within a single cavity. Additionally, the winding groups 30 can be directly connected within the cavity and limited by the abutment part 103.

[0055] In some specific embodiments, such as Figure 6 , Figure 7 as well as Figure 8 As shown, the magnetic component further includes a third conductive element 104 and a fourth conductive element 105. The third conductive element 104 is provided with a third through hole 1041, and the fourth conductive element 105 is provided with a fourth through hole 1051. The first through hole 1011, the second through hole 1021, the third through hole 1041, and the fourth through hole 1051 are connected to form the through hole. The third conductive element 104 and the fourth conductive element 105 are respectively located on both sides of the frameless winding.

[0056] Specifically, two third pins 1043 can be provided on the third conductive element 104, and two fourth pins 1053 can be provided on the fourth conductive element 105. The two third pins 1043 can be located on both sides of the third opening 1042, and the two fourth pins 1053 can be located on both sides of the fourth opening 1052. The third conductive element 104 and the fourth conductive element 105 are part of the secondary winding of the magnetic component. The third pins 1043 and the fourth pins 1053 can be electrically connected to the first pins 1013 and the second pins 1023 of the first conductive element 101 and the second conductive element 102 in other frameless windings in the magnetic component, so as to realize the parallel connection of each conductive element. At the same time, in this embodiment, both the third conductive element 104 and the fourth conductive element 105 are preferably copper sheets.

[0057] In some embodiments, to prevent short circuits in the magnetic components, a first insulating layer is provided on the outer sides of the first conductive element 101, the second conductive element 102, the blocking part 103, the third conductive element 104, and the fourth conductive element 105, while the coils in the winding assembly 30 are also provided with a second insulating layer. The winding assembly 30, in which the coils are wound within the accommodating cavity, can be formed by winding three coils with second insulating layers on a winding post.

[0058] In some embodiments, such as Figure 5 and Figure 6 As shown, the magnetic core assembly also includes a first magnetic core portion 201a and a second magnetic core portion 201b, with the first magnetic core portion 201a and the second magnetic core portion 201b fixedly connected.

[0059] In this embodiment, the first magnetic core portion 201a and the second magnetic core portion 201b are symmetrical to each other. The first magnetic core portion 201a and the second magnetic core portion 201b can be connected by winding posts to form a magnetic core group in the magnetic assembly. The first magnetic core portion 201a and the second magnetic core portion 201b can be fixedly connected by dispensing adhesive.

[0060] exist Figure 5 and Figure 6 In the specific embodiment shown, the magnetic core assembly can be composed of two E-shaped magnetic cores, namely, the first winding post 202a and the first magnetic core portion 201a are integrally formed to form an E-shaped magnetic core, and the second winding post 202b and the second magnetic core portion 201b are integrally formed to form an E-shaped magnetic core.

[0061] It should be noted that the magnetic core assembly mentioned in this application can also be constructed from a U-shaped magnetic core and a T-shaped magnetic core. The architecture of the magnetic core assembly can be selected according to the actual application, and this embodiment does not impose specific limitations.

[0062] In summary, the frameless winding provided in this embodiment of the invention can be formed by a first conductive element 101, a second conductive element 102, and a blocking part 103. A first through hole 1011 is provided on the first conductive element 101, and a second through hole 1021 is provided on the second conductive element 102. The first through hole 1011 and the second through hole 1021 are connected to form a through hole. The blocking part 103 is fixedly connected to the first conductive element 101 and the second conductive element 102 to form an integral structure. At the same time, a receiving cavity is formed between the first conductive element 101 and the second conductive element 102. Thus, during the assembly process of the magnetic component, the winding post can be directly placed in the through hole, and there is no need to set a frame in the magnetic component. The winding group 30 can be directly wound on the outer circumference of the winding post in the receiving cavity. This not only improves the assembly efficiency of the magnetic component, but also reduces the volume of the magnetic component, and avoids the technical problem of poor heat dissipation caused by adding a frame.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A skeletonless winding, characterized by The application relates to a no-skeleton winding, which comprises the following parts: a first conductive part provided with a first through hole, a first opening and a first pin; a second conductive part provided with a second through hole, a second opening and a second pin, wherein the second through hole is communicated with the first through hole to form a through hole; a resisting part, one end of which is fixedly connected with the first conductive part, and the other end of which is fixedly connected with the second conductive part, so as to form a U-shaped accommodating cavity between the first conductive part and the second conductive part; wherein the magnetic assembly, in which the no-skeleton winding is arranged, is provided with a magnetic core group and a winding group, the magnetic core group comprises a winding column arranged in the through hole, and the winding group is arranged on the outer circumferential surface of the winding column in the accommodating cavity; the first opening, the second opening, the first through hole and the second through hole are communicated, the first pin is arranged on both sides of the first opening, and the second pin is arranged on both sides of the second opening.

2. The frameless winding of claim 1, wherein, The first conductive part, the second conductive part and the resisting part are integrally formed.

3. The frameless winding of claim 2, wherein, The outer side of the first conductive part, the second conductive part and the resisting part is provided with a first insulating layer.

4. A magnetic assembly, characterized by The application further relates to a no-skeleton winding, which comprises the following parts: the no-skeleton winding according to any one of claims 1-3; a magnetic core group, which comprises a winding column arranged in the through hole; and a winding group, which is arranged on the outer circumferential surface of the winding column in the accommodating cavity.

5. The magnetic assembly of claim 4, wherein, The magnetic assembly further comprises a third conductive part and a fourth conductive part, the third conductive part is provided with a third through hole, the fourth conductive part is provided with a fourth through hole, the first through hole, the second through hole, the third through hole and the fourth through hole are communicated to form the through hole, and the third conductive part and the fourth conductive part are respectively arranged on both sides of the no-skeleton winding.

6. The magnetic assembly of claim 4, wherein, The winding group comprises a line cake structure formed by three layers of coil winding, and the coil is provided with a second insulating layer.

7. The magnetic assembly of claim 4, wherein, The magnetic core group further comprises a first magnetic core part and a second magnetic core part, and the first magnetic core part is fixedly connected with the second magnetic core part.

8. The magnetic assembly of claim 7, wherein, The winding column comprises a first winding column and a second winding column, the first winding column and the first magnetic core part are integrally formed, and the second winding column and the second magnetic core part are integrally formed.

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