Transformer synthesized by PCB (printed circuit board) and metal structural member
By using metal U-shaped hooks as secondary coils in high-frequency transformers and increasing the number of coils with PCB boards and connecting plates, the problems of insufficient output power and heating of traditional transformers are solved, and a more efficient current load and lightweight design of transformers are achieved.
Patent Information
- Application Number
- CN202422182256.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The secondary coil of traditional high-frequency transformers lacks output power and generates a large heat, which cannot meet the needs of high current, and cannot achieve the lightweight setting of the transformer.
The U-shaped hook made of metal material is used as the secondary coil to increase the overload of the transformer, reduce the coil heating, and form a loop through the PCB board and the connecting piece, increasing the number of turns of the secondary coil to carry a larger current. At the same time, the circuit board is used to support and fix the magnetic core to achieve a lightweight design.
The output power of the transformer is increased, the high temperature burnout caused by excessive current of the secondary coil is avoided, and the lightweight setting of the transformer is realized, reducing production costs and volume.
Smart Images
Figure CN222995192U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to the technical field of transformers, and specifically relates to a transformer synthesized by a PCB board and a metal structure member. Background Technique
[0002] A high-frequency transformer is a power transformer with a working frequency exceeding the intermediate frequency (10 kHz); high-frequency transformers are widely used in switching power supplies, industrial rectification equipment, metal surface treatment and other fields. For example, they are widely used in industries such as chemical electroplating, electrolysis, and hydrogen production. A high-frequency transformer is the core component of various low-voltage DC power supplies, which can use frequency conversion chopper technology to isolate and step down the strong electricity after rectifying and filtering the commercial power through the transformer to convert it into a DC voltage, realize precise voltage stable transmission and power balance distribution. High-frequency transformers contribute to advantages such as high power efficiency and energy conservation, small volume and low cost, and have a huge application scenario in high-power DC applications.
[0003] Generally, high-frequency transformers are required to have the conditions of small volume and high energy efficiency; however, traditional high-frequency transformers usually use aluminum wire or copper wire for secondary coil winding, and the production process is complex and the cost is very high, which will cause insufficient output power of the secondary coil and a large amount of heat generation, and cannot meet the large current demand; and the existing transformers need to be installed and fixed with the help of brackets, so the lightweight design of the transformer cannot be realized. Content of the Utility Model
[0004] The purpose of the utility model is to provide a transformer synthesized by a PCB board and a metal structure member, which uses a U-shaped hook made of metal material as the secondary coil, can increase the overload capacity of the transformer, thereby avoiding the occurrence of heat generation linearity of the secondary coil caused by too large current; and supports and fixes the magnetic core, secondary coil and circuit board to realize the lightweight design of the transformer without the help of a fixing bracket; to solve the technical problems proposed in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A transformer synthesized by a PCB board and a metal structure member, comprising
[0007] A magnetic core arranged in an O shape, on which a primary coil is wound, and a secondary coil is also provided on the magnetic core;
[0008] The secondary coil includes a group of secondary coil A and a group of secondary coil B; each group of secondary coils is made of four U-shaped hooks, and two of the four U-shaped hooks are in one buckle; the bottoms of the two U-shaped hooks in each buckle are connected to the circuit board, and a connecting piece is welded below the circuit board;
[0009] The secondary coil A has four nodes a1, a2, a3, and a4; the secondary coil B has four nodes b1, b2, b3, and b4; among them, the nodes a2, a4, b1, and b3 are welded to the first electrode plate; b2 and b4 penetrate the insulating plate and are welded to the second electrode plate; a1 and a3 penetrate the insulating plate and are welded to the third electrode plate.
[0010] As a further technical solution of the present utility model, the nodes b2, b4, a1, and a3 penetrate the first electrode plate and are insulated from the first electrode plate.
[0011] As a further technical solution of the present utility model, the circuit board is arranged below the magnetic core.
[0012] As a further technical solution of the present utility model, the insulating plate is arranged between the first electrode plate, the second electrode plate, and the third electrode plate.
[0013] As a further technical solution of the present utility model, the second electrode plate and the third electrode plate are symmetrically arranged.
[0014] As a further technical solution of the present utility model, an insulating tube is sleeved outside the U-shaped hook, and the insulating tube is heat-shrunk on the outside of the U-shaped hook to form an insulating layer.
[0015] As a further technical solution of the present utility model, the second electrode plate and the third electrode plate are arranged in a "one" shape or a "Z" shape.
[0016] Compared with the prior art, the beneficial effects of the present utility model are:
[0017] In the present utility model, the U-shaped hook is made of steel structure, and an insulating tube is sleeved outside the U-shaped hook. The insulating tube is heat-shrunk on the outside of the U-shaped hook to form an insulating layer; the setting of the U-shaped hook reduces the coil heating and increases the output power of the transformer, thereby avoiding the high-temperature burnout of the secondary coil caused by excessive current.
[0018] In the present utility model, the circuit board and the connecting piece are used to close between the two U-shaped hooks, thereby forming a loop and increasing the number of turns of the secondary coil; the copper foil on the circuit board is not enough to carry the current after transformation, so the connecting piece is used to increase the overload capacity of the current.
[0019] In the present utility model, the circuit board can not only connect between the U-shaped hooks, but also carry the magnetic core, so that the magnetic core can be installed without the help of other installation structures, thereby realizing the lightweight setting of the transformer. Description of the Drawings
[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.
[0021] Figure 2It is in the present utility model Figure 1 The schematic diagram of the rear side structure
[0022] Figure 3 It is in the present utility model Figure 1 The schematic diagram of the bottom structure
[0023] Figure 4 It is in the present utility model Figure 3 The schematic diagram of the split structure
[0024] Figure 5 It is in the present utility model Figure 4 The schematic diagram of another perspective
[0025] Figure 6 It is in the present utility model Figure 4 The schematic diagram of the partial structure
[0026] In the figure: 1 - magnetic core, 2 - primary coil, 3 - secondary coil, 4 - circuit board, 5 - connecting piece, 6 - first electrode plate, 7 - insulating plate, 8 - second electrode plate, 9 - third electrode plate. Specific embodiments
[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0028] Please refer to Figures 1-6 , in the embodiments of the present utility model, a transformer formed by synthesizing a PCB board and a metal structural member includes a magnetic core 1 arranged in an O shape. The primary coil 2 is wound around the magnetic core 1, and a secondary coil 3 is also provided on the magnetic core 1; the secondary coil 3 includes a group of secondary coil A and a group of secondary coil B;
[0029] By adopting the above technical solution, the two groups of secondary coils output two groups of currents, realizing the multi-point double-winding output of the transformer;
[0030] The U-shaped hook is a metal structural member. An insulating tube is sleeved outside the U-shaped hook, and the insulating tube is heat-shrunk on the outside of the U-shaped hook to form an insulating layer; the setting of the U-shaped hook increases the overload capacity of the transformer, thereby avoiding the high-temperature burnout of the secondary coil caused by excessive current.
[0031] Furthermore, since the U-shaped hooks are made of hard materials and cannot be wound around the magnetic core 1, each secondary coil is made of four U-shaped hooks, with two U-shaped hooks in one buckle; the bottoms of the two U-shaped hooks in each buckle are connected to the circuit board 4, and a connecting piece 5 is welded below the circuit board 4.
[0032] The circuit board 4 and the connecting piece 5 are used to form a closed loop between the two U-shaped hooks, thereby increasing the number of turns of the secondary coil; the metal sheet on the circuit board 4 is not sufficient to carry the current after transformation, so the connecting piece 5 is used to increase the overload capacity of the current.
[0033] The secondary coil A has four nodes a1, a2, a3, and a4; the secondary coil B has four nodes b1, b2, b3, and b4; among them, the nodes a2, a4, b1, and b3 are welded to the first electrode plate 6; b2 and b4 penetrate through the insulating plate 7 and are welded to the second electrode plate 8; a1 and a3 penetrate through the insulating plate 7 and are welded to the third electrode plate 9.
[0034] In this embodiment, the nodes b2, b4, a1, and a3 penetrate through the first electrode plate 6 and are insulated from the first electrode plate 6.
[0035] By adopting the above technical solution, the first electrode plate 6 is the common point output; the second electrode plate 8 is the output point of the secondary coil B; the secondary coil A is the output point of the secondary coil A.
[0036] In this embodiment, the circuit board 4 is arranged below the magnetic core 1.
[0037] By adopting the above technical solution, the circuit board 4 can not only connect the U-shaped hooks but also support the magnetic core 1, enabling the installation of the magnetic core 1 without relying on other installation structures, thus achieving the lightweight design of the transformer.
[0038] In this embodiment, the insulating plate 7 is arranged between the first electrode plate 6, the second electrode plate 8, and the third electrode plate 9. The second electrode plate 8 and the third electrode plate 9 are symmetrically arranged.
[0039] The setting of the insulating plate 7 realizes the insulation between the common output point and the secondary coil A and the secondary coil B.
[0040] In this embodiment, the second electrode plate 8 and the third electrode plate 9 are arranged in a "one" shape or a "Z" shape.
[0041] By adopting the above technical solution, when the second electrode plate 8 and the third electrode plate 9 are arranged in a "one" shape, they can be directly fixed to the mounting bracket; when the second electrode plate 8 and the third electrode plate 9 are arranged in a "Z" shape, the second electrode plate 8 and the third electrode plate 9 have channels for heat dissipation, improving the heat dissipation effect of the transformer.
[0042] The working principle of the present utility model is as follows: During installation, first wind the primary coil 2 around the magnetic core 1 and snap the secondary coil 3. The secondary coil 3 consists of 8 U-shaped hooks. Since the U-shaped hooks are made of hard material and cannot be wound along the magnetic core 1, each group of secondary coils is made of four U-shaped hooks, with two U-shaped hooks forming a buckle. The bottoms of the two U-shaped hooks in each buckle are connected to the circuit board 4, and a connecting piece 5 is welded below the circuit board 4.
[0043] Through the circuit board 4 and the connecting piece 5 to form a closed loop between two U-shaped hooks, thus increasing the number of turns of the secondary coil. The metal sheet on the circuit board 4 is not sufficient to carry the current after transformation, so the connecting piece 5 is used to increase the overload capacity of the current.
[0044] The circuit board 4 can not only undertake the connection between the U-shaped hooks but also carry the magnetic core 1, enabling the installation of the magnetic core 1 without relying on other installation structures, thus realizing the lightweight design of the transformer.
[0045] The secondary coil A has four nodes a1, a2, a3, and a4; the secondary coil B has four nodes b1, b2, b3, and b4. Among them, the nodes a2, a4, b1, and b3 are welded to the first electrode plate 6; b2 and b4 penetrate through the insulating plate 7 and are welded to the second electrode plate 8; a1 and a3 penetrate through the insulating plate 7 and are welded to the third electrode plate 9.
[0046] The first electrode plate 6 is the output of the common center electrode point; the second electrode plate 8 is the output point of the secondary coil B; the third electrode plate 9 is the output point of the secondary coil A.
[0047] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A transformer composed of a PCB board and a metal structural member, characterized in that: include An O-shaped magnetic core (1), a primary coil (2) surrounding the magnetic core (1), and a secondary coil (3) also being arranged on the magnetic core (1); The secondary coil (3) comprises a group of secondary coils A and a group of secondary coils B; each group of secondary coils is made of four U-shaped hooks, two of the four U-shaped hooks form a buckle; the bottoms of the two U-shaped hooks in each buckle are connected to the circuit board (4), and a connecting piece (5) is welded below the circuit board (4); The secondary coil A has four nodes a1, a2, a3 and a4; the secondary coil B has four nodes b1, b2, b3 and b4; The nodes a2, a4, b1 and b3 are welded to the first electrode plate (6); b2 and b4 penetrate the insulating plate (7) and are welded to the second electrode plate (8); and a1 and a3 penetrate the insulating plate (7) and are welded to the third electrode plate (9).
2. The transformer composed of a PCB board and a metal structure according to claim 1, characterized in that: The nodes b2, b4, a1 and a3 pass through the first electrode plate (6) and are insulated from the first electrode plate (6).
3. The transformer composed of a PCB board and a metal structure according to claim 1, characterized in that: The circuit board (4) is arranged below the magnetic core (1).
4. The transformer composed of a PCB board and a metal structure according to claim 1, characterized in that: The insulating plate (7) is arranged between the first electrode plate (6), the second electrode plate (8) and the third electrode plate (9).
5. The transformer composed of a PCB board and a metal structure according to claim 4, characterized in that: The second electrode plate (8) and the third electrode plate (9) are arranged symmetrically.
6. The transformer composed of a PCB board and a metal structure according to claim 1, characterized in that: An insulating tube is sleeved on the outside of the U-shaped hook, and the insulating tube is heat-shrunk on the outside of the U-shaped hook to form an insulating layer.
7. The transformer composed of a PCB board and a metal structure according to claim 1, characterized in that: The second electrode plate (8) and the third electrode plate (9) are arranged in a "I" shape or a "Z" shape.