PCB and magnetic core combined air-cooled transformer
By combining the PCB and magnetic core in a wind-cooled transformer design, the traditional winding and frame structure is eliminated. The heat dissipation channel is used to achieve rapid heat dissipation, which solves the problems of large transformer space occupation and slow heat dissipation, and improves the reliability and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional transformers suffer from problems such as large frame space requirements, windings being prone to deformation or collapse, and slow heat dissipation.
It adopts a structure that combines PCB and magnetic core. By wrapping the PCB on the magnetic core to form a heat dissipation channel, the winding and frame structure are eliminated, and a cooling fan is used to achieve rapid heat dissipation.
This reduces the space occupied by the transformer, avoids the risk of winding deformation or collapse, improves heat dissipation efficiency, and extends the service life of the transformer.
Smart Images
Figure CN224110091U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer technical field, concretely relates to a kind of air-cooled transformer of PCB and magnetic core combination. BACKGROUND
[0002] Transformer is widely used in power system, industrial equipment, household appliance and other fields, transformer realizes the transformation of voltage by electromagnetic induction, its core structure includes magnetic core, framework and winding etc., traditional transformer adopts the mode of framework and winding combination, framework occupies large space, winding needs adhesive tape insulation, process is complicated, and winding has the risk of deformation or collapse, easy to damage the service life of transformer, in addition, transformer generates a lot of heat in actual use, existing transformer mostly adopts air-cooled system, traditional transformer is usually placed in air-cooled system and naturally cooled, and the heat dissipation speed is slow, therefore, a kind of air-cooled transformer of PCB and magnetic core combination is needed to solve the above problems. SUMMARY
[0003] Therefore, a reliable and stable air-cooled transformer of PCB and magnetic core combination with good heat dissipation effect is provided.
[0004] An air-cooled transformer of PCB and magnetic core combination, comprising a magnetic core combination and a plurality of PCB boards, the magnetic core combination comprises a plurality of magnetic cores, adjacent magnetic cores each have a protruding strip-shaped magnet facing each other, and the two opposite strip-shaped magnets of adjacent magnetic cores are attached to form a group of magnetic columns, the center of each PCB board is provided with a through hole, and the PCB board is sleeved on the magnetic column through the through hole, and each PCB board on each group of magnetic columns has a heat dissipation gap between them to place electronic components and form a plurality of heat dissipation air ducts to pass through the cold air of the heat dissipation fan.
[0005] Further, two adjacent magnetic cores are connected to form a magnetic core gap, each magnetic core includes a base and a magnetic surface body extending vertically from the base, two magnetic surface bodies of adjacent magnetic cores are configured as side walls for limiting the magnetic core gap, the base is a bottom wall for limiting the magnetic core gap, one side of the PCB board abuts or is close to the base, and the main surface of the PCB board is parallel to the magnetic surface body.
[0006] Further, the magnetic core combination is arranged in a comb shape as a whole, and each magnetic core is in the shape of L or T, and each PCB board is perpendicular to the corresponding magnetic column and attached to the corresponding magnetic surface body.
[0007] Further, the strip-shaped magnet is protruded outward from the magnetic surface body and parallel to the base, two opposite strip-shaped magnets of adjacent magnetic cores are located in the magnetic core gap and have the same structure, and the two opposite strip-shaped magnets are adhered by magnetic conductive glue.
[0008] Further, each group of the magnetic column has substantially the same size, and each of the PCB boards has substantially the same size.
[0009] Further, the plurality of magnetic cores are arranged horizontally along the same linear direction, the outer surfaces of the magnetic cores are flush, and the adjacent magnetic cores are bonded by a magnetic conductive glue.
[0010] Further, the bonding surfaces of the adjacent magnetic cores are flush with the bonding surfaces of the corresponding two bar-shaped magnets.
[0011] Further, each of the PCB boards is arranged with multiple turns of copper wires, and the PCB boards are electrically connected by bus bars.
[0012] Further, the PCB boards are multilayer boards, and the PCB boards can be insulated by not arranging wires on the top layer or the bottom layer, or by coating the surfaces of the top layer or the bottom layer of the PCB boards with insulating glue.
[0013] Further, the heat dissipation fan and the magnetic core combination are located on the same line, and the cold air of the heat dissipation fan is blown out through each of the heat dissipation gaps.
[0014] Compared with the prior art, the air-cooled transformer with the combination of the PCB and the magnetic core has at least the following beneficial effects:
[0015] Firstly, the air-cooled transformer with the combination of the PCB and the magnetic core is arranged with copper on the PCB to replace the winding, and the plurality of PCB boards having the winding effect are directly sleeved on the magnetic columns of the magnetic core through the through holes, compared with the traditional transformer, the winding and the framework structure are cancelled, the overall occupied space is small, the winding deformation or collapse risk is avoided, the reliability and stability are good, and the service life of the transformer is prolonged.
[0016] Secondly, the heat dissipation gaps are formed between the plurality of PCB boards on each group of magnetic columns to form a plurality of heat dissipation air ducts, so that the cold air of the heat dissipation fan can be dissipated through the plurality of heat dissipation air ducts, the heat dissipation speed is fast, the heat dissipation effect is good, and the service life of the transformer is further prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a three-dimensional schematic view of a use state of an air-cooled transformer with the combination of a PCB and a magnetic core according to an embodiment of the present application.
[0018] Figure 2 is a three-dimensional schematic view of a structure of an air-cooled transformer with the combination of a PCB and a magnetic core according to an embodiment of the present application.
[0019] Figure 3 is a three-dimensional schematic view of a structure of an air-cooled transformer with the combination of a PCB and a magnetic core according to an embodiment of the present application.
[0020] Figure 4 is a structural perspective view of a magnetic core assembly of a PCB and magnetic core combined air-cooled transformer according to an embodiment of the present application.
[0021] Figure 5 is a structural perspective view of a PCB of a PCB and magnetic core combined air-cooled transformer according to an embodiment of the present application.
[0022] In the drawings,
[0023] 1, magnetic core assembly; 2, PCB; 3, cooling fan; 4, magnetic core; 5, magnetic column; 6, through hole; 7, cooling gap; 8, base; 9, magnetic surface body; 10, bus bar. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0025] Please refer to Figures 1 to 5 , which shows a PCB and magnetic core combined air-cooled transformer according to an embodiment of the present application, comprising a magnetic core assembly 1 and a plurality of PCBs 2, the magnetic core assembly 1 comprising a plurality of magnetic cores 4, adjacent magnetic cores 4 each being provided with a protruding strip-shaped magnet face to face, the opposite two strip-shaped magnets of adjacent magnetic cores 4 being attached to form a group of magnetic columns 5, the center of the PCB 2 being provided with a through hole 6, the PCB 2 being sleeved on the magnetic column 5 through the through hole 6, each PCB 2 on each group of magnetic columns 5 having a cooling gap 7 between them to place electronic components and form a plurality of cooling air ducts for the cooling wind of the cooling fan 3 to pass through.
[0026] Specifically, two adjacent magnetic cores 4 are connected to form a magnetic core gap, each magnetic core 4 comprises a base 8 and a magnetic surface body 9 extending perpendicularly from the base 8, two magnetic surface bodies 9 of adjacent magnetic cores 4 are configured to define the side walls of the magnetic core gap, the base 8 is the bottom wall of the magnetic core gap, one side of the PCB 2 abuts or is close to the base 8, and the main surface of the PCB 2 is parallel to the magnetic surface body 9.
[0027] More specifically, the magnetic core assembly 1 is arranged in a comb shape as a whole, and each magnetic core 4 is in the shape of L or T; each PCB 2 is perpendicular to the corresponding magnetic column 5 and is attached to the corresponding magnetic surface body 9 respectively.
[0028] In some specific embodiments, the plurality of L-shaped or T-shaped magnetic cores 4 are combined into a comb-shaped magnetic core assembly 1, and then two PCBs 2 are placed in the magnetic core gaps formed by the adjacent magnetic cores 4, and the two PCBs 2 are attached to the two magnetic surface bodies 9 inside the adjacent magnetic cores 4, i.e., to the two side walls of the magnetic core gaps. At this time, a heat dissipation gap 7 is formed between the two PCBs 2. Similarly, a plurality of two PCBs 2 can form a plurality of heat dissipation gaps 7.
[0029] More specifically, the bar magnets protrude outward from the magnetic surface bodies 9 and are parallel to the base 8. The two opposite bar magnets of the adjacent magnetic cores 4 are located in the magnetic core gaps and have the same structure. The two opposite bar magnets are bonded by a magnetically conductive adhesive.
[0030] Specifically, each group of magnetic columns 5 has substantially the same size, and each PCB 2 has substantially the same size. In some specific embodiments, the through hole 6 in the middle of the PCB 2 has the same shape and size as the corresponding magnetic column 5. Preferably, the through hole 6 is tightly fitted with the magnetic column 5 to fix the PCB 2 on the magnetic column 5.
[0031] Specifically, a plurality of magnetic cores 4 are arranged horizontally along the same direction, and the outer surfaces of each magnetic core 4 are flush. The adjacent magnetic cores 4 are bonded by a magnetically conductive adhesive. In some specific embodiments, a magnetically conductive adhesive is used to bond the plurality of magnetic cores 4.
[0032] Specifically, the bonding surfaces of the adjacent magnetic cores 4 are flush with the bonding surfaces of the corresponding two bar magnets.
[0033] Specifically, each PCB 2 is arranged with multiple turns of copper wire. The PCB 2 is a multi-layer board. In some specific embodiments, the PCB 2 is a 6- to 8-layer board. Each layer of the PCB 2 is arranged with copper. Each layer of copper is electrically connected by a buried hole. The bottom of each PCB 2 has a reserved pin. The PCBs 2 are electrically connected by the reserved pins and bus bars 10.
[0034] Specifically, the PCB 2 is a multi-layer board. The PCB 2 can be insulated by not arranging wires on the top layer or the bottom layer, or by coating the surface of the top layer or the bottom layer of the PCB 2 with an insulating adhesive. In some specific embodiments, the surfaces of the PCB 2 and the adjacent two PCBs 2 are coated with an insulating adhesive to achieve insulation.
[0035] Specifically, the heat dissipation fan 3 is located on the same line as the magnetic core assembly 1. The cold air of the heat dissipation fan 3 is blown out through each heat dissipation gap 7.
[0036] In summary, the air-cooled transformer combined with the PCB board 2 and the magnetic core 4 is provided with copper on the PCB board 2, so that the PCB board 2 plays a role of replacing the winding, and the multiple PCB boards 2 playing a role of the winding are directly sleeved on the magnetic columns 5 of the magnetic core 4 through the through holes 6, compared with the traditional transformer, the winding and the frame structure are cancelled, the overall occupied space is small, meanwhile, the risk of winding deformation or collapse is avoided, the air-cooled transformer is reliable and stable, and the service life of the transformer is prolonged; meanwhile, the multiple heat dissipation air ducts are formed through the heat dissipation gaps 7 between the multiple PCB boards 2 on the multiple magnetic columns 5, so that the cold air of the heat dissipation fan 3 can be dissipated through the multiple heat dissipation air ducts, the heat dissipation speed is fast, the heat dissipation effect is good, and the service life of the transformer is further prolonged.
[0037] It should be noted that the utility model is not limited to the above-mentioned embodiments, and other changes can be made by those skilled in the art according to the creative spirit of the utility model, and the changes made according to the creative spirit of the utility model should be included in the scope of protection claimed by the utility model.
Claims
1. An air-cooled transformer with a PCB and magnetic core combination, characterized in that, The magnetic core assembly includes a plurality of magnetic cores, each of which is provided with a protruding bar-shaped magnet face to face with the adjacent magnetic core, and the two opposite bar-shaped magnets of the adjacent magnetic cores are attached to form a group of magnetic columns. The PCB board is provided with a through hole at the center position, and the PCB board is sleeved on the magnetic column through the through hole. Each group of magnetic columns has a heat dissipation gap between each PCB board to place electronic components and form a plurality of heat dissipation air ducts to pass through the cooling air of the heat dissipation fan.
2. The air-cooled transformer with a PCB and a magnetic core according to claim 1, characterized in that, The two adjacent magnetic cores are connected to form a magnetic core gap, each magnetic core includes a base and a magnetic surface body vertically extending from the base, the two magnetic surface bodies of the adjacent magnetic cores are configured to define the side wall of the magnetic core gap, the base is the bottom wall of the magnetic core gap, and one side of the PCB board abuts or is close to the base. The main surface of the PCB board is parallel to the magnetic surface body.
3. The air-cooled transformer incorporating a PCB and magnetic core of claim 2, wherein, The magnetic core assembly is arranged in a comb shape as a whole, and each magnetic core is L-shaped or T-shaped. Each PCB board is perpendicular to the corresponding magnetic column and is attached to the corresponding magnetic surface body.
4. The air-cooled transformer incorporating a PCB and magnetic core of claim 2, wherein, The bar-shaped magnet is protruded outward from the magnetic surface body and parallel to the base, and the two opposite bar-shaped magnets of the adjacent magnetic cores are located in the magnetic core gap and are symmetrical or identical structures, and the two opposite bar-shaped magnets are bonded by magnetic conductive glue.
5. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, Each group of magnetic columns has substantially the same size, and each PCB board has substantially the same size.
6. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, A plurality of magnetic cores are arranged horizontally along the same linear direction, and the outer surfaces of each magnetic core are flush, and the adjacent magnetic cores are bonded by magnetic conductive glue.
7. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, The bonding surface of the adjacent magnetic cores is flush with the bonding surface of the corresponding two bar-shaped magnets.
8. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, Each PCB board is arranged with multiple turns of copper wire, and each PCB board is electrically connected by bus bars.
9. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, The PCB board is a multilayer board, and the PCB board can be insulated by not laying wires on the top layer or the bottom layer, or by coating the surface of the top layer or the bottom layer of the PCB board with insulating glue.
10. The air-cooled transformer incorporating a PCB and magnetic core of claim 1, wherein, The heat dissipation fan and the magnetic core assembly are located on the same straight line, and the cooling air of the heat dissipation fan is blown out through each heat dissipation gap.