A transformer of a multi-winding set

Abstract

The utility model relates to transformer technical field especially relates to a kind of transformer of multiple wire group, including installation magnetic core, installation magnetic core includes the first rectangular plate and the second rectangular plate of mutual magnetic attraction, the first rectangular plate and the second rectangular plate are respectively shaped with the magnetism column for winding, magnetism column is equipped with coil module, coil module includes multiple copper ring and wire cake, copper ring and wire cake are arranged alternately, wherein wire cake leads out first connecting electric wire and second connecting electric wire outward;Copper ring leads out first conductive port and second conductive port;Installation magnetic core is equipped with terminal block and PC partition;PC partition is physically isolated with the conductive port of copper ring by wire cake leading out connecting electric wire, meet the creepage distance and electrical clearance requirement under high-voltage scene;The conductive port of copper ring is directly connected to terminal block, using similar limit slot and clamping seat design, ensure the connection stability under high-frequency vibration environment;The scheme is realized by the interphase arrangement of copper ring and wire cake Active regulation and control of leakage inductance.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a multi-wire transformer. Background Technology

[0002] Small transformers mainly refer to single-phase transformers below 20KV·A and three-phase transformers below 50KV·A. They are characterized by their small size, low cost, and fewer wires. The load rate and utilization rate of small transformers are generally low. The inductive loads they carry are generally not capacitively compensated. They are widely used in various electrical equipment.

[0003] Utility model application CN202320133977.5 discloses a transformer frame, including a supporting base rod. A mating top rod is horizontally arranged on the top surface of the supporting base rod. Fixed side strips are horizontally and symmetrically welded to both sides of the supporting base rod and the mating top rod. Fixed through holes are evenly distributed on the top surface of the fixed side strips. Through channels are horizontally formed on the top surfaces of the supporting base rod and the mating top rod. An extension rod is vertically welded upwards on the top surface of the supporting base rod. A connecting rod is symmetrically welded downwards on the bottom surface of the mating top rod. A supporting insertion rod is vertically connected upwards to the top surface of the supporting base rod. Through holes are symmetrically formed on the top surface of the mating top rod. The adoption of a movable adjustable structure allows for adding or removing coils to meet the needs of coil installation. Furthermore, the adjustable structure allows for the installation of coils of various sizes, greatly improving the versatility of installation.

[0004] In existing patents, multi-wire transformers mostly adopt a series or parallel single winding structure. The series structure makes it difficult to independently adjust the output voltage of a single winding, while the parallel structure cannot flexibly distribute the current of each branch. Utility Model Content

[0005] The purpose of this invention is to provide a multi-wire transformer to address the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A multi-wire transformer includes a mounting core. The mounting core comprises a first rectangular plate and a second rectangular plate that are magnetically attracted to each other. The first and second rectangular plates are respectively formed with magnetic pillars for winding. A coil module is sleeved on the magnetic pillar. The coil module includes multiple copper rings and coils, which are arranged alternately. The coils have first and second connecting wires leading outward. The copper rings have first and second conductive ports. The mounting core is equipped with a terminal block and a PC partition. The first and second conductive ports are respectively connected to the terminal block, and the first and second connecting wires are respectively connected to the PC partition.

[0007] Furthermore, the first connecting wire and the second connecting wire are respectively fitted with Teflon sleeves.

[0008] Furthermore: the ends of multiple first connecting wires are joined together and twisted into a first solder section, and the ends of multiple second connecting wires are joined together and twisted into a second solder section.

[0009] Furthermore: the PC partition is provided with a first terminal and a second terminal, the first solder part is soldered to the first terminal and the second solder part is soldered to the second terminal.

[0010] Furthermore: the first conductive port and the second conductive port are conductive blocks formed by processing copper material, and the terminal block includes multiple copper sheet buses, which are formed with conductive welding grooves for the first conductive port and the second conductive port to be inserted.

[0011] Furthermore: an insulating plate is installed at the bottom of the terminal block, and the insulating plate is formed with insulating guide grooves for the first conductive port and the second conductive port to pass through; the PC partition is formed with multiple fixing and mounting grooves, one end of the copper sheet busbar is inserted into the fixing and mounting groove, and the copper sheet busbar is perpendicularly spliced ​​with the PC partition.

[0012] Furthermore: a shielding shell is fitted around the magnetic core, which surrounds the first rectangular plate and the second rectangular plate, as well as the PC partition that is attached between the first rectangular plate and the second rectangular plate.

[0013] Furthermore, the magnetic column is also fitted with a skeleton, which includes a winding column. The winding column is formed with a guide hole that is coaxially aligned with the magnetic column, and limit plates are formed at both ends of the winding column.

[0014] Furthermore, the outer periphery of the first rectangular plate and the second rectangular plate are respectively formed with two side plates, which are formed perpendicularly at both ends of the first rectangular plate and at both ends of the second rectangular plate, respectively. The two side plates are symmetrically arranged with the magnetic column as the symmetry point.

[0015] Furthermore, the inner wall of the side plate is formed with an arc-shaped surface that is coaxially fitted with the magnetic column.

[0016] The beneficial effects of this utility model are as follows: the PC partition physically isolates the connecting wires led out from the coil from the conductive port of the copper ring, meeting the creepage distance and electrical clearance requirements under high voltage scenarios; the conductive port of the copper ring is directly connected to the terminal block, and adopts a design similar to a limit groove and clamping seat to ensure connection stability under high frequency vibration environment; this solution achieves active control of leakage inductance through the phase-to-phase arrangement of the copper ring and the coil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the transformer from the front view.

[0018] Figure 2 This is a schematic diagram of the transformer's axial structure, which hides the coil module.

[0019] Figure 3 This is a schematic diagram of the exploded structure of a transformer.

[0020] Figure 4 An exploded view of the structure with the magnetic core installed.

[0021] The reference numerals in the accompanying drawings include: 1- Install the magnetic core, 11-First rectangular plate, 12-Second rectangular plate, 13-Magnetic column, 14-Frame, 15-Winding column 16-Guide hole, 17-Limiting plate, 18-Side plate, 19-Arc-shaped surface, 2-Coil Module 21-Copper ring, 22-Wire disc, 23-First connecting wire, 24-Second connecting wire 25 - First conductive port, 26 - Second conductive port 3-Shielding shell, 31-PC partition, 32-First terminal, 33-Second terminal, 34-First solder section 35-Copper sheet busbar, 36-Conductive welding groove, 37-Insulating plate, 38 - Insulation guide groove, 39 - Fixed installation groove. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, a multi-wire transformer includes a mounting core 1. The mounting core 1 includes a first rectangular plate 11 and a second rectangular plate 12 that are magnetically attracted to each other. The first rectangular plate 11 and the second rectangular plate 12 are respectively formed with magnetic posts 13 for winding. The magnetic posts 13 are fitted with coil modules 2. The coil modules 2 include multiple copper rings 21 and coil discs 22, which are arranged alternately. The coil discs 22 have a first connecting wire 23 and a second connecting wire 24 leading outward. The copper rings 21 have a first conductive port 25 and a second conductive port 26 leading outward. The mounting core 1 is equipped with a terminal block and a PC partition 31. The first conductive port 25 and the second conductive port 26 are respectively connected to the terminal block, and the first connecting wire 23 and the second connecting wire 24 are respectively connected to the PC partition 31.

[0024] The alternating winding structure of copper ring 21 and coil 22 actively controls leakage inductance through differentiated winding distribution; the flat structure of coil 22 increases the leakage flux path, while the tight winding of copper ring 21 enhances the coupling effect, forming a high leakage inductance characteristic similar to a hybrid common-mode choke.

[0025] PC partition 31 physically isolates the connecting wires led out from wire disc 22 from the conductive port of copper ring 21, meeting the creepage distance and clearance requirements under high voltage scenarios; the conductive port of copper ring 21 is directly connected to the terminal block, and adopts a design similar to limit groove and clamp seat to ensure connection stability under high frequency vibration environment; this solution achieves active leakage inductance control through the phase-to-phase arrangement of copper ring 21 and wire disc 22.

[0026] Each magnetic post 13 is independently wound with a coil module 2, forming a multi-wire parallel structure. This layout allows for flexible adjustment of the power distribution of each winding, such as by increasing or decreasing the number of magnetic posts 13 to achieve linear expansion of power density. Furthermore, the first connecting wire 23 and the second connecting wire 24 are respectively fitted with Teflon sleeves. The ends of multiple first connecting wires 23 converge and connect, twisting to form a first solder section 34; the ends of multiple second connecting wires 24 converge and connect, twisting to form a second solder section. All the first connecting wires 23 of the coil 22 are gathered, their insulation stripped, and twisted into a single strand to form the first solder section 34; similarly, all the second connecting wires 24 of the coil 22 are gathered, their insulation stripped, and twisted into a single strand to form the second solder section. Teflon has excellent dielectric properties; its sleeves, tightly wrapping the wires, effectively isolate the electrical connection between adjacent wires or other metal components, preventing short circuits caused by wear, aging, or partial damage to the wire insulation. After the ends of multiple wires converge and twist, the contact area between the conductors significantly increases; then, by filling the gaps with solder and forming an overall conductive structure, the contact resistance can be minimized.

[0027] PC partition 31 is provided with a first terminal 32 and a second terminal 33. A first solder part 34 is soldered to the first terminal 32 and grounded, and a second solder part is soldered to the second terminal 33 and grounded. PC partition 31 has excellent insulation properties. As a mounting carrier for the first terminal 32 and the second terminal 33, it can physically separate terminals with different potentials and avoid cross-potential short circuits caused by air breakdown, dust adhesion, or condensation.

[0028] The first conductive port 25 and the second conductive port 26 are conductive blocks formed by processing copper. The terminal block includes multiple copper busbars 35, and each copper busbar 35 is formed with a conductive welding groove 36 for inserting the first conductive port 25 and the second conductive port 26. The first conductive port 25 and the second conductive port 26 protrude outwards, and the conductive welding groove 36 formed by the copper busbar 35 can correspond to the multiple first conductive ports 25 and the second conductive ports 26. After inserting the first conductive port 25 and the second conductive port 26 into the conductive welding groove 36, the connection is achieved by welding, which ensures the stability of the connection, the stability of the contact area, and the stability of the electric field when conducting electricity.

[0029] An insulating plate 37 is installed at the bottom of the terminal block. The insulating plate 37 is formed with an insulating guide groove 38 for the first conductive port 25 and the second conductive port 26 to pass through. The insulating plate 37 serves as an isolation layer between the conductive port and the equipment housing or other metal parts, and can block longitudinal leakage caused by condensation or dust accumulation on the port surface. The cross-sectional dimensions of the insulating guide groove 38 match the conductive port. During installation, the conductive block is inserted along the insulating guide groove 38 to ensure the alignment accuracy between the port and the upper terminal block.

[0030] The PC partition 31 is formed with multiple mounting slots 39. One end of the copper busbar 35 is inserted into the mounting slot 39, and the copper busbar 35 is perpendicularly spliced ​​with the PC partition 31, making the connection between the PC partition 31 and the copper busbar 35 more stable. This further increases the overall stability of the transformer.

[0031] A shielding shell 3 is fitted around the magnetic core 1. The shielding shell 3 surrounds the first rectangular plate 11 and the second rectangular plate 12, as well as the PC partition 31 attached between the first rectangular plate 11 and the second rectangular plate 12. After the first rectangular plate 11 and the second rectangular plate 12 are attached to each other, only the magnetic connection structure is spliced ​​together. By surrounding the first rectangular plate 11 and the second rectangular plate 12 with the shielding shell 3, and simultaneously surrounding the PC partition 31 attached between the first rectangular plate 11 and the second rectangular plate 12, the overall structure forms a cuboid structure, which further improves stability. It does not affect the normal circuit connection between the first terminal 32 and the second terminal 33 of the PC partition 31 and the external circuit, nor does it affect the normal circuit connection between the copper busbar 35 of the terminal block and the external circuit.

[0032] The magnetic post 13 is also fitted with a frame 14, which includes a winding post 15. The winding post 15 has guide holes 16 that are coaxially aligned with the magnetic post 13. Limiting plates 17 are formed at both ends of the winding post 15. The limiting plates 17 can stop the two ends of the coil module 2, thus achieving the function of limiting. Side plates 18 are formed on the periphery of the first rectangular plate 11 and the second rectangular plate 12. There are two side plates 18, which are formed perpendicularly at both ends of the rectangular plates. The two side plates 18 are symmetrically arranged with the magnetic post 13 as the symmetrical point. The side plates 18 can protect the coil of the winding post 15, and the coil will not be exposed. The coil is effectively shielded and covered. The cross-sectional area of ​​the magnetic post 13 is increased, which can reduce energy efficiency during operation and reduce the operating temperature compared with the traditional method.

[0033] Preferably, the inner wall of the side plate 18 is formed with an arc-shaped surface 19 that is coaxially matched with the magnetic post 13. The coil wound on the winding post 15 has a columnar structure. The arc-shaped surface 19 formed by the side plate 18 is exactly matched with the shape of the coil, and the arc-shaped wrapping of it further improves the wrapping stability.

[0034] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0035] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multi-wire transformer, comprising mounting a magnetic core, characterized in that: The mounting magnetic core includes a first rectangular plate and a second rectangular plate that are magnetically attracted to each other. The first rectangular plate and the second rectangular plate are respectively formed with magnetic pillars for winding. A coil module is sleeved on the magnetic pillar. The coil module includes multiple copper rings and coils, which are arranged alternately. The coils have a first connecting wire and a second connecting wire leading outward. The copper rings have a first conductive port and a second conductive port leading outward. The mounting magnetic core is equipped with a terminal block and a PC partition. The first conductive port and the second conductive port are respectively connected to the terminal block. The first connecting wire and the second connecting wire are respectively connected to the PC partition.

2. A multi-wire transformer according to claim 1, characterized in that: The first connecting wire and the second connecting wire are respectively fitted with Teflon sleeves.

3. A multi-wire transformer according to claim 2, characterized in that: The ends of multiple first connecting wires are joined together and twisted into a first solder section, and the ends of multiple second connecting wires are joined together and twisted into a second solder section.

4. A multi-wire transformer according to claim 3, characterized in that: The PC partition is provided with a first terminal and a second terminal. The first solder part is soldered to the first terminal and grounded, and the second solder part is soldered to the second terminal and grounded.

5. A multi-wire transformer according to claim 4, characterized in that: The first and second conductive ports are conductive blocks made of copper. The terminal block includes multiple copper busbars, each with a conductive solder groove for insertion into the first and second conductive ports.

6. A multi-wire transformer according to claim 5, characterized in that: An insulating plate is installed at the bottom of the terminal block. The insulating plate is formed with insulating guide grooves for the first conductive port and the second conductive port to pass through. The PC partition is formed with multiple fixing grooves. One end of the copper busbar is inserted into the fixing groove, and the copper busbar is perpendicularly spliced ​​with the PC partition.

7. A multi-wire transformer according to claim 1, characterized in that: The magnetic core is surrounded by a shielding shell, which encloses the first rectangular plate, the second rectangular plate, and the PC partition plate attached between the first rectangular plate and the second rectangular plate.

8. A multi-wire transformer according to claim 1, characterized in that: The magnetic column is also fitted with a skeleton, which includes a winding column. The winding column is formed with a guide hole that is coaxially aligned with the magnetic column, and limit plates are formed at both ends of the winding column.

9. A multi-wire transformer according to claim 8, characterized in that: The first rectangular plate and the second rectangular plate are respectively formed with side plates on their outer periphery. There are two side plates, which are formed perpendicularly at both ends of the first rectangular plate and at both ends of the second rectangular plate, respectively. The two side plates are symmetrically arranged with the magnetic column as the symmetry point.

10. A multi-wire transformer according to claim 9, characterized in that: The inner wall of the side plate is formed with an arc-shaped surface that is coaxial with the magnetic column.

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