Multi-way switching power supply transformer

Abstract

The utility model relates to a multi-way switching power supply transformer, which comprises a magnetic core and a mounting side plate, the magnetic core is sleeved in two mutually parallel frameworks, the main magnetic core is of a combined structure, a coil winding is wound on the magnetic core, the coil winding is formed by winding a plurality of layers of insulated wires along the radial direction of the frameworks, and the mounting side plate is arranged on the mounting side plate. The coil winding comprises a primary winding, a first secondary winding, a second secondary winding and a third secondary winding; the primary winding is arranged on the other framework; the mounting side plates are symmetrically arranged on the two sides of the magnetic core; fixed ends are arranged at the lower ends of the mounting side plates. According to the scheme, the multi-way switching power supply transformer is designed, the multi-way output transformer applied to a switching power supply is designed to replace a plurality of power supplies in the prior art, system miniaturization is achieved, meanwhile, the surfaces of the coil windings and the main magnetic core are covered with the silica gel layers, the stabilization effect can be achieved, damage caused by external force collision is reduced, and the service life of the transformer is prolonged. And meanwhile, the mounting side plates are designed to play a role in fastening.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to a multi-way switching power supply transformer. Background Art

[0002] With the development of power electronics technology, many fields require miniaturization, lightweight and integrated design. Taking the full-bridge power circuit of IPM as a power module as an example, in addition to the general control power supply, a set of driving full-bridge control requires four independent +15V driving power supplies. The power supply of the entire system is of many types and large in number, and occupies a large volume, which is not conducive to miniaturization, lightweight and integrated design. In the entire switching power supply, the transformer occupies a large volume and is high. The transformer is a very commonly used electronic component with the function of changing the voltage. It is one of the most widely used electrical products at present. However, when in an open application state, the transformer is easily injured by external force during the assembly process, causing it to be damaged. In view of this defect, this invention is specially applied for. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the utility model provides a multi-way switching power supply transformer which can improve the above-mentioned deficiencies.

[0004] The utility model relates to a multi-way switching power supply transformer, comprising a main magnetic core and a mounting side plate, wherein the magnetic core is sleeved in two mutually parallel skeletons, the main magnetic core is a combined structure, a coil winding is wound on the magnetic core, the coil winding is electrically connected to a circuit board, the coil winding has multiple layers of insulating wires wound along the radial direction of the skeleton, and each end of the coil winding has a lead-out terminal; the coil winding comprises a primary winding and a first secondary winding, a second secondary winding and a third secondary winding; the first secondary winding, the second secondary winding and the third secondary winding are sequentially stacked on one of the skeletons; a spacer ring is arranged between the first secondary winding and the second secondary winding and between the second secondary winding and the third secondary winding, and the primary winding is arranged on the other skeleton; the mounting side plates are symmetrically arranged on both sides of the magnetic core; the surfaces of the coil winding and the main magnetic core are covered with a silicone gel layer, and a fixed end is arranged at the lower end of the mounting side plate.

[0005] Furthermore, the magnetic core is a manganese-zinc ferrite core.

[0006] Furthermore, the outside of the magnetic core is wrapped with electrical white cloth for insulation.

[0007] Furthermore, the primary winding is wound with enameled copper wire having a wire diameter of 2.24 mm.

[0008] Furthermore, the first secondary winding is wound with enameled copper wire with a wire diameter of 1.25 mm.

[0009] Furthermore, the second secondary winding is wound with enameled copper wire with a wire diameter of 0.56 mm.

[0010] Furthermore, the magnetic core includes a main magnetic column and side portions arranged in parallel on the same side of the main magnetic column.

[0011] Furthermore, a magnetic accommodation portion is arranged in the middle of the frame, and the side portions of the two magnetic cores are in relative contact with each other and are sleeved in the magnetic accommodation portion.

[0012] Furthermore, a leakage magnetic core is arranged in the middle of the main magnetic core; the leakage magnetic core is located in the middle of the relatively contacting side edges.

[0013] Furthermore, a rubber material with excellent thermal conductivity is filled between the skeleton and the coil winding.

[0014] This proposal designs a multi-way switching power supply transformer. By designing a multi-way output transformer used in a switching power supply, it replaces the previous multiple switching power supplies to achieve system miniaturization, lightness and integration. At the same time, the coil winding and the main magnetic core surface are covered with a silicone gel layer to play a stabilizing role and reduce damage caused by external force collision. At the same time, the design and installation of side panels can also play a tightening role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of this utility model.

[0016] Figure 2 Schematic diagram of the internal structure of the magnetic core.

[0017] Illustration: 1 magnetic core, 2 mounting side plate, 21 fixed end, 3 primary winding, 4 first secondary winding, 5 second secondary winding, 6 fourth secondary winding, 7 spacer ring, 8 circuit board, 9 frame, 91 magnetic core accommodating part, 101 side part, 102 main magnetic core, 103 leakage magnetic core, 12 thin layer of rubber material. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1-2As shown, the utility model relates to a multi-way switching power supply transformer, including a magnetic core 1, a mounting side plate 2, the magnetic core is sleeved in two mutually parallel skeletons 9, the main magnetic core is a combined structure, a coil winding is wound on the magnetic core, the coil winding is electrically connected to a circuit board 8, the coil winding has multiple layers of insulating wires wound along the radial direction of the skeleton, each end of the coil winding has a lead-out terminal, a part of the lead-out terminal is connected to the circuit board, the circuit board is pressed from a glass fiber board, and its thickness is 1.2mm, so that the circuit board 4 has good mechanical properties, dielectric properties, good heat resistance and moisture resistance, can meet the reliability requirements of the multi-way switching power supply transformer, and the circuit board thickness of 1.2mm is small, so as to reduce the multi-way switching power supply The volume of the transformer, the coil winding includes a primary winding 3 and a first secondary winding 4, a second secondary winding 5 and a third secondary winding 6; the first secondary winding, the second secondary winding and the third secondary winding are stacked on one of the skeletons in sequence; a spacer ring 7 is set between the first secondary winding, the second secondary winding and between the second secondary winding and the third secondary winding, wherein the number of turns of the first, second and third windings are different to meet the multi-way switch circuit transformer to provide multiple power supplies with different voltage values, the primary winding is set on another skeleton; the mounting side 2 plates are symmetrically arranged on both sides of the magnetic core; the coil winding and the main magnetic core surface are covered with a silicone gel layer 11, which can enhance the integrity of the transformer and improve the vibration and impact resistance. The lower end of the mounting side plate is provided with a fixed end 21, the fixed end is L-shaped, and a mounting hole is set on the fixed end for easy installation.

[0020] As a technical improvement, the magnetic core is made of a manganese-zinc ferrite core.

[0021] As a technical improvement, the outside of the magnetic core is wrapped with electrical white cloth for insulation.

[0022] As a technical improvement, the primary winding is wound with enameled copper wire with a wire diameter of 2.24 mm.

[0023] As a technical improvement, the first secondary winding is wound with enameled copper wire with a wire diameter of 1.25 mm.

[0024] As a technical improvement, the second secondary winding is wound with enameled copper wire having a wire diameter of 0.56 mm, and the third secondary winding is wound with enameled copper wire having a wire diameter of 0.40 mm.

[0025] As a technical improvement, the magnetic core includes a main magnetic column 102 and a side portion 101 arranged in parallel on the same side of the main magnetic column.

[0026] As a technical improvement, a magnetic accommodation portion 90 is provided in the middle of the skeleton 9, and the side portions of the two magnetic cores are in relative contact with each other and are sleeved in the magnetic accommodation portion.

[0027] As a technical improvement, a leakage core 103 is provided in the middle of the main magnetic core; the leakage core is located in the middle of the relatively contacting side edges, and the leakage core can be a ferrite core, a Permalloy core, an amorphous alloy core, an ultrafine crystal alloy core, an iron powder core, an AlSi core or an FeSi core, etc. By providing the leakage core 25, the magnetic lines of force in the primary winding, multiple secondary windings and the main magnetic core of the transformer are acted on to form a bypass magnetic circuit, thereby increasing the leakage inductance.

[0028] As a technical improvement, a thin layer 12 of glue with excellent thermal conductivity, such as silicone, epoxy resin, and polyurethane glue, is filled between the skeleton and the coil winding.

[0029] For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all of these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A multi-way switching power supply transformer, characterized in that: It includes a magnetic core and a mounting side plate. The magnetic core is sleeved in two mutually parallel skeletons. The main magnetic core is a combined structure. A coil winding is wound on the magnetic core. The coil winding is electrically connected to a circuit board. The coil winding has multiple layers of insulating wires wound along the radial direction of the skeleton, and each end of the coil winding has a lead-out terminal. The coil winding includes a primary winding and a first secondary winding, a second secondary winding and a third secondary winding. The first secondary winding, the second secondary winding and the third secondary winding are stacked on one of the skeletons in sequence. A spacer ring is arranged between the first secondary winding and the second secondary winding and between the second secondary winding and the third secondary winding, and the primary winding is arranged on the other skeleton. The mounting side plates are symmetrically arranged on both sides of the magnetic core. The surface of the coil winding and the main magnetic core is covered with a silicone gel layer, and a fixed end is arranged at the lower end of the mounting side plate.

2. A multi-way switching power supply transformer according to claim 1, characterized in that: The magnetic core is made of a manganese-zinc ferrite core.

3. A multi-way switching power supply transformer according to claim 1, characterized in that: The outside of the magnetic core is wrapped with electrical white cloth for insulation.

4. A multi-way switching power supply transformer according to claim 1, characterized in that: The primary winding is wound with enameled copper wire with a wire diameter of 2.24 mm.

5. The multi-way switching power supply transformer according to claim 1, characterized in that: The first secondary winding is wound with enameled copper wire with a wire diameter of 1.25 mm.

6. A multi-way switching power supply transformer according to claim 1, characterized in that: The second secondary winding is wound with enameled copper wire with a wire diameter of 0.56 mm.

7. The multi-way switching power supply transformer according to claim 1, characterized in that: The magnetic core comprises a main magnetic column and side portions which are arranged in parallel on the same side of the main magnetic column.

8. The multi-way switching power supply transformer according to claim 1, characterized in that: A magnetic accommodation portion is arranged in the middle of the frame, and the side portions of the two magnetic cores are in relative contact with each other and are sleeved in the magnetic accommodation portion.

9. The multi-way switching power supply transformer according to claim 1, characterized in that: A leakage magnetic core is also arranged in the middle of the main magnetic core; the leakage magnetic core is located in the middle of the opposite contact side edges.

10. The multi-way switching power supply transformer according to claim 1, characterized in that: The space between the frame and the coil winding is filled with a rubber material having excellent thermal conductivity.

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