Double-shielding boosting transformer
By designing a double-shielded step-up transformer, the problems of leakage flux and electromagnetic interference in traditional transformers in high-frequency or high-power applications are solved, achieving higher shielding effect and stability, and enhancing the electromagnetic compatibility and heat dissipation performance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional transformers suffer from leakage flux and electromagnetic interference in high-frequency or high-power applications, and their shielding effect is limited, affecting equipment performance and system stability.
The design employs a double-shielded structure, which combines the upper and lower magnetic cores to form a multi-layered shielding structure. This includes the first and second coils being wound in different winding slots, and the shielding structure consisting of the upper bottom post, the lower bottom post, and the outer peripheral post, which reduces electromagnetic interference and radiation.
It effectively reduces electromagnetic interference between coils, lowers electromagnetic radiation from the transformer, improves equipment stability and shielding performance, and enhances heat dissipation and connection stability.
Smart Images
Figure CN224082303U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, specifically to a double-shielded step-up transformer. Background Technology
[0002] Transformers, as important electrical energy conversion devices, are widely used in power systems, electronic equipment, and communications. Their core function is to convert voltage through electromagnetic induction to meet the power supply needs of different devices. However, as electronic equipment develops towards higher frequencies and higher power, traditional transformers are prone to electromagnetic interference in high-frequency operating environments. This not only affects the performance of the transformer itself but may also interfere with surrounding electronic equipment, reducing the overall stability and reliability of the system.
[0003] Traditional transformers typically consist of a primary coil, a secondary coil, and a magnetic core, with energy transfer between the primary and secondary coils achieved through the magnetic core. However, this structure has significant limitations in high-frequency or high-power applications. First, electromagnetic coupling between the primary and secondary coils easily leads to leakage flux, resulting in energy loss and electromagnetic interference. Second, traditional transformers have limited shielding effectiveness, making it difficult to effectively suppress high-frequency electromagnetic radiation. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by providing a double-shielded step-up transformer.
[0005] The purpose of this utility model is achieved through the following technical solution: a double-shielded step-up transformer, including an upper magnetic core and a lower magnetic core arranged opposite each other; the lower magnetic core includes a lower bottom column, a first lower middle column disposed at the top of the lower bottom column, a second lower middle column disposed on the outer periphery of the first lower middle column, and a lower side column disposed on the outer periphery of the second lower middle column;
[0006] The upper magnetic core includes an upper bottom post, a first upper middle post disposed at the bottom of the upper bottom post, a second upper middle post disposed on the outer periphery of the first upper middle post, and an upper side post disposed on the outer periphery of the second upper middle post;
[0007] A first core pillar is formed by abutting between the first upper central pillar and the first lower central pillar; a second core pillar is formed by abutting between the second upper central pillar and the second lower central pillar; and an outer peripheral pillar is formed by abutting between the upper side pillar and the lower side pillar.
[0008] A first winding groove is formed between the first core post and the second core post; a first coil is wound in the first winding groove; a second winding groove is formed between the second core post and the outer peripheral post; a second coil is wound in the second winding groove.
[0009] The present invention is further configured such that the first lower middle column, the second lower middle column, and the lower side column are all located at the top of the lower bottom column; and the first upper middle column, the second upper middle column, and the upper side column are all located at the bottom of the upper bottom column.
[0010] The present invention is further configured such that the cross-sectional shape of the bottom column is circular; the cross-sectional shape of the first bottom middle column is circular; the cross-sectional shape of the second bottom middle column and the cross-sectional shape of the bottom side column are both annular; and the bottom column, the first bottom middle column, the second bottom middle column and the bottom side column are arranged with the same center.
[0011] The present invention is further configured such that the cross-sectional shape of the upper bottom column is circular; the cross-sectional shape of the first upper middle column is circular; the cross-sectional shape of the second upper middle column and the cross-sectional shape of the upper side column are both annular; and the upper bottom column, the first upper middle column, the second upper middle column and the upper side column are arranged with the same center.
[0012] The present invention is further configured such that the upper bottom column, the first upper middle column, the second upper middle column, and the upper side column are integrally formed; and the lower bottom column, the first lower middle column, the second lower middle column, and the lower side column are integrally formed.
[0013] The present invention is further configured such that the lower bottom column is provided with an epoxy board; the epoxy board is provided with a first terminal and a second terminal; the first coil and the second coil are respectively connected to the first terminal and the second terminal.
[0014] The present invention is further configured such that the lower bottom column is provided with a limiting groove; and the epoxy board is provided with a limiting block that cooperates with the limiting groove.
[0015] The present invention is further configured such that the materials of the lower bottom column and the upper bottom column are ferrite or nanocrystalline alloy.
[0016] The present invention is further configured such that the epoxy board is made of high thermal conductivity epoxy resin.
[0017] The present invention is further configured such that the number of turns of the second coil is greater than the number of turns of the first coil.
[0018] The beneficial effects of this utility model are as follows: By winding the first coil in the first winding slot and the second coil in the second winding slot, and using the shielding structure formed by the upper bottom post, the lower bottom post and the second core post, the electromagnetic interference between the first coil and the second coil can be effectively reduced; in addition, the shielding structure formed by the upper bottom post, the lower bottom post and the outer peripheral post can effectively reduce the electromagnetic radiation of the transformer. Attached Figure Description
[0019] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a cross-sectional view of the present invention;
[0022] Figure 3 This is an exploded view of the structure of this utility model;
[0023] Figure 4 This is an exploded view of the skeleton of this utility model from another perspective;
[0024] Among them: 11, lower bottom post; 12, first lower middle post; 13, second lower middle post; 14, lower side post; 21, upper bottom post; 22, first upper middle post; 23, second upper middle post; 24, upper side post; 31, first core post; 32, second core post; 33, outer peripheral post; 41, first winding groove; 42, second winding groove; 51, first coil; 52, second coil; 6, epoxy board; 61, first terminal; 62, second terminal; 71, limiting groove; 72, limiting block. Detailed Implementation
[0025] The present invention will be further described in conjunction with the following embodiments.
[0026] Depend on Figures 1 to 4 As can be seen, the double-shielded step-up transformer described in this embodiment includes an upper magnetic core and a lower magnetic core arranged opposite each other; the lower magnetic core includes a lower bottom column 11, a first lower middle column 12 disposed at the top of the lower bottom column 11, a second lower middle column 13 disposed on the outer periphery of the first lower middle column 12, and a lower side column 14 disposed on the outer periphery of the second lower middle column 13.
[0027] The upper magnetic core includes an upper bottom post 21, a first upper middle post 22 disposed at the bottom of the upper bottom post 21, a second upper middle post 23 disposed on the outer periphery of the first upper middle post 22, and an upper side post 24 disposed on the outer periphery of the second upper middle post 23.
[0028] A first core pillar 31 is formed by abutting between the first upper central pillar 22 and the first lower central pillar 12; a second core pillar 32 is formed by abutting between the second upper central pillar 23 and the second lower central pillar 13; and an outer peripheral pillar 33 is formed by abutting between the upper side pillar 24 and the lower side pillar 14.
[0029] A first winding groove 41 is formed between the first core post 31 and the second core post 32; a first coil 51 is wound in the first winding groove 41; a second winding groove 42 is formed between the second core post 32 and the outer peripheral post 33; a second coil 52 is wound in the second winding groove 42.
[0030] Specifically, the double-shielded step-up transformer described in this embodiment effectively reduces electromagnetic interference between the first coil 51 and the second coil 52 by winding the first coil 51 in the first winding slot 41 and the second coil 52 in the second winding slot 42, and by using a shielding structure formed by the upper bottom post 21, the lower bottom post 11 and the second core post 32. In addition, the shielding structure formed by the upper bottom post 21, the lower bottom post 11 and the outer peripheral post 33 can effectively reduce the electromagnetic radiation of the transformer.
[0031] In this embodiment, a double-shielded step-up transformer is provided, wherein the first lower middle column 12, the second lower middle column 13, and the lower side column 14 are all located at the top of the lower bottom column 11; and the first upper middle column 22, the second upper middle column 23, and the upper side column 24 are all located at the bottom of the upper bottom column 21. This arrangement ensures a stable and reliable overall structure.
[0032] The double-shielded step-up transformer described in this embodiment has a circular cross-sectional shape for the bottom column 11, the first bottom middle column 12, the second bottom middle column 13, and the bottom side column 14; all of these cross-sectional shapes are annular. The bottom column 11, the first bottom middle column 12, the second bottom middle column 13, and the bottom side column 14 are arranged concentrically. This arrangement further enhances the overall structural stability and shielding performance.
[0033] The double-shielded step-up transformer described in this embodiment has a circular cross-sectional shape for the upper bottom column 21, the first upper middle column 22, the second upper middle column 23, and the upper side column 24; all of these cross-sectional shapes are annular. The upper bottom column 21, the first upper middle column 22, the second upper middle column 23, and the upper side column 24 are arranged concentrically. This arrangement further enhances the overall structural stability and shielding performance.
[0034] The double-shielded step-up transformer described in this embodiment comprises an upper bottom column 21, a first upper middle column 22, a second upper middle column 23, and an upper side column 24 integrally formed; and a lower bottom column 11, a first lower middle column 12, a second lower middle column 13, and a lower side column 14 integrally formed. This configuration facilitates the manufacturing of the upper and lower magnetic cores.
[0035] This embodiment describes a double-shielded step-up transformer. The lower base column 11 is provided with an epoxy board 6. The epoxy board 6 has a first terminal 61 and a second terminal 62. The first coil 51 and the second coil 52 are respectively connected to the first terminal 61 and the second terminal 62. This arrangement facilitates the connection of the first coil 51 and the second coil 52 to external devices.
[0036] In this embodiment, a double-shielded step-up transformer is provided, wherein the lower base column 11 is provided with a limiting groove 71; and the epoxy board 6 is provided with a limiting block 72 that cooperates with the limiting groove 71. This arrangement facilitates enhanced stability of the connection between the epoxy board 6 and the lower base column 11.
[0037] In this embodiment, a double-shielded step-up transformer is described, wherein the materials of the lower base column 11 and the upper base column 21 are ferrite or nanocrystalline alloy. This configuration improves magnetic permeability and shielding effectiveness.
[0038] In this embodiment, a double-shielded step-up transformer is described, wherein the epoxy board 6 is made of highly thermally conductive epoxy resin. This design improves the transformer's heat dissipation performance.
[0039] In this embodiment, a double-shielded step-up transformer is described, wherein the number of turns in the second coil 52 is greater than the number of turns in the first coil 51. This configuration enables voltage boosting, effectively increasing the voltage output.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A double shielded step-up transformer, characterized by: The upper magnetic core and the lower magnetic core are arranged opposite to each other; the lower magnetic core comprises a lower bottom column (11), a first lower middle column (12) arranged on the top of the lower bottom column (11), a second lower middle column (13) arranged on the outer periphery of the first lower middle column (12), and a lower edge column (14) arranged on the outer periphery of the second lower middle column (13); The upper magnetic core comprises an upper bottom column (21), a first upper middle column (22) arranged on the bottom of the upper bottom column (21), a second upper middle column (23) arranged on the outer periphery of the first upper middle column (22), and an upper edge column (24) arranged on the outer periphery of the second upper middle column (23); The first upper middle column (22) and the first lower middle column (12) abut to form a first core column (31); the second upper middle column (23) and the second lower middle column (13) abut to form a second core column (32); and the upper edge column (24) and the lower edge column (14) abut to form an outer peripheral column (33); The first core column (31) and the second core column (32) form a first winding slot (41) therebetween; the first winding slot (41) is provided with a first coil (51) wound therein; the second core column (32) and the outer peripheral column (33) form a second winding slot (42) therebetween; and the second winding slot (42) is provided with a second coil (52) wound therein.
2. A double shielded step-up transformer according to claim 1, characterized in that: The first lower middle column (12), the second lower middle column (13), and the lower edge column (14) are arranged on the top of the lower bottom column (11); and the first upper middle column (22), the second upper middle column (23), and the upper edge column (24) are arranged on the bottom of the upper bottom column (21).
3. A double shielded step-up transformer according to claim 1, characterized in that: The cross-sectional shape of the lower bottom column (11) is circular; the cross-sectional shape of the first lower middle column (12) is circular; the cross-sectional shape of the second lower middle column (13) and the cross-sectional shape of the lower edge column (14) are both annular; and the lower bottom column (11), the first lower middle column (12), the second lower middle column (13), and the lower edge column (14) are arranged with the same center.
4. A double shielded step-up transformer according to claim 1, characterized in that: The cross-sectional shape of the upper bottom column (21) is circular; the cross-sectional shape of the first upper middle column (22) is circular; the cross-sectional shape of the second upper middle column (23) and the cross-sectional shape of the upper edge column (24) are both annular; and the upper bottom column (21), the first upper middle column (22), the second upper middle column (23), and the upper edge column (24) are arranged with the same center.
5. A double shielded step-up transformer according to claim 1, characterized in that: The upper bottom column (21), the first upper middle column (22), the second upper middle column (23), and the upper edge column (24) are integrally formed; and the lower bottom column (11), the first lower middle column (12), the second lower middle column (13), and the lower edge column (14) are integrally formed.
6. A double shielded step-up transformer according to claim 1, characterized in that: The lower bottom column (11) is provided with an epoxy plate (6); the epoxy plate (6) is provided with a first terminal (61) and a second terminal (62); and the first coil (51) and the second coil (52) are connected to the first terminal (61) and the second terminal (62), respectively.
7. A double shielded step-up transformer according to claim 6, characterized in that: The lower bottom column (11) is provided with a limiting slot (71); and the epoxy plate (6) is provided with a limiting block (72) matched with the limiting slot (71).
8. A double shielded step-up transformer according to claim 1, characterized in that: The material of the lower bottom column (11) and the material of the upper bottom column (21) are ferrite or nanocrystalline alloy.
9. A double shielded step-up transformer according to claim 7, characterized in that: The material of the epoxy plate (6) is high-thermal-conductivity epoxy resin.
10. A double shielded step-up transformer according to claim 1, characterized in that: The number of turns of the second coil (52) is greater than the number of turns of the first coil (51).