CN220873385U

CN220873385U - High-power flat-plate transformer

Info

Publication number: CN220873385U
Application number: CN202322665638.4U
Authority: CN
Inventors: 海来布曲
Original assignee: Huizhou Ciji New Energy Technology Co ltd
Current assignee: Huizhou Ciji New Energy Technology Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-04-30
Anticipated expiration: 2033-10-07

Abstract

The utility model discloses a high-power flat-plate transformer, which comprises: the primary coil set and the secondary coil set are respectively sleeved on the magnetic core assembly, and are stacked in sequence; the magnetic core assembly, the primary coil assembly and the secondary coil assembly are accommodated and installed in the shell; the primary coil group comprises a plurality of primary coils, the secondary coil group comprises a plurality of secondary coils, the plurality of primary coils and the plurality of secondary coils are respectively sleeved on the magnetic core assembly, and the plurality of primary coils and the plurality of secondary coils are respectively stacked alternately in sequence, so that a high-power flat transformer main body is formed; the plurality of secondary coils are connected in parallel. According to the high-power flat-plate transformer, the output power of the transformer is improved through the arrangement mode that the primary coils and the secondary coils are alternately stacked, and the secondary coils are connected in parallel, so that the power bearing capacity of the transformer is improved.

Description

High-power flat-plate transformer

Technical Field

The utility model relates to the technical field of flat-plate transformers, in particular to a high-power flat-plate transformer.

Background

A planar transformer is a special form of transformer, the structure and appearance of which is planar, also known as a parallel coil transformer. It is composed of two parallel coils, one is usually a main side coil, the other is a secondary side coil, and the two coils are connected through an iron core. Planar transformers are commonly used in a number of special applications, such as in the fields of electronics, communications equipment, computers, and low power supplies. Compared with the traditional spiral winding transformer, the flat plate transformer has relatively small volume due to the coil arrangement mode, and is suitable for occasions with limited space or volume requirements; the flat transformer adopts a parallel coil structure, and a few heavy iron cores and shells are omitted, so that the flat transformer is relatively light in weight; flat transformers generally have high conversion efficiency due to the close arrangement and short distance of the coils; planar transformers are generally suitable for high frequency applications because of the short distance between coils and the compact structure that is advantageous for reducing losses and electromagnetic interference.

However, flat transformers are generally suitable for low power electronics and small power supplies, but are not suitable for high power industrial applications, thereby greatly limiting the range of applications for flat transformers.

Disclosure of utility model

Based on this, it is necessary to provide a high-power planar transformer in order to solve the technical problem that the output power of the planar transformer is low.

The high-power flat transformer comprises a shell, a magnetic core assembly, a primary coil set and a secondary coil set, wherein the primary coil set and the secondary coil set are respectively sleeved on the magnetic core assembly, and are sequentially stacked; the magnetic core assembly, the primary coil assembly and the secondary coil assembly are accommodated and installed in the shell.

The primary coil set comprises a plurality of primary coils, the secondary coil set comprises a plurality of secondary coils, the plurality of primary coils and the plurality of secondary coils are respectively sleeved on the magnetic core assembly, and the plurality of primary coils and the plurality of secondary coils are respectively stacked alternately in sequence, so that a high-power flat transformer main body is formed.

The plurality of secondary coils are connected in parallel.

In one embodiment, the secondary coil set includes n secondary coils, and the primary coil set includes n+1 primary coils, where the n+1 primary coils and the n secondary coils are sequentially stacked alternately, so that when the primary coils and the secondary coils are stacked, one primary coil is used as a starting end, and the other primary coil is used as a terminating end, and is sequentially sleeved on a side surface of the magnetic core assembly.

In one embodiment, the high-power planar transformer includes a plurality of first insulating paper layers, and the plurality of first insulating paper layers are respectively disposed between two adjacent primary coils and two adjacent secondary coils.

In one embodiment, each secondary coil includes a plurality of copper sheets and a plurality of second insulating paper layers, and the plurality of copper sheets and the plurality of second insulating paper layers are stacked alternately in sequence, so as to form a laminated copper sheet winding.

In one embodiment, the secondary coil set further includes a plurality of first connection copper columns, the two secondary coils are connected in parallel through the two first connection copper columns, two ends of one first connection copper column are respectively connected with the input ends of the two secondary coils, and two ends of the other first connection copper column are respectively connected with the output ends of the two secondary coils.

In one embodiment, the secondary coil group further includes a second connection copper column, and the plurality of secondary coils are respectively connected to the second connection copper column, so that the plurality of secondary coils are connected in parallel through the second connection copper column.

In one embodiment, the primary coil set includes a plurality of connection copper wires and two wire collecting posts, wherein the two connection copper wires are respectively connected to an input end and an output end of a primary coil; a plurality of connecting copper wires connected to the input ends of the primary coils are converged and collected through a wire collecting column; and a plurality of connecting copper wires connected to the output ends of the primary coils are converged through another wire-collecting column.

In one embodiment, the magnetic core assembly includes two magnetic core seats and two magnetic cores, the two magnetic cores are respectively in one-to-one correspondence with the two magnetic core seats, one end of each magnetic core is connected to the inner surface of the bottom wall of the corresponding magnetic core seat, and the other end of each magnetic core extends for a preset distance away from the magnetic core seat; the two magnetic core seats are oppositely buckled and connected, and the end faces of the two magnetic cores, which are opposite to the corresponding magnetic core seats, are matched and connected, so that the whole magnetic core assembly is formed.

In one embodiment, the plurality of primary coils and the plurality of secondary coils are respectively sleeved on the side surfaces of the two corresponding magnetic cores.

In one embodiment, the housing includes a base, two side walls and a top wall, and one end of the magnetic core assembly is disposed on a top surface of the base; the two side walls are clamped on the two side surfaces of the magnetic core assembly; the top wall is buckled at the other end of the magnetic core component; one end of each of the two side walls is connected to two ends of the base, and the other end of each of the two side walls is connected to two ends of the top wall, so that the magnetic core assembly is stably installed.

In summary, the high-power flat-plate transformer disclosed by the utility model improves the output power of the transformer by the arrangement mode that the primary secondary coils are alternately stacked, in practical application, a plurality of secondary coils run on the same magnetic circuit, and the secondary coils are connected in parallel, so that the power bearing capacity of the transformer is effectively improved, and each secondary coil can be responsible for a part of load by connecting the secondary coils in parallel, so that the total power bearing capacity of the transformer is effectively increased; meanwhile, the heat load of each secondary coil can be shared by the arrangement mode of stacking and parallel connection, so that better heat dissipation is facilitated, and the running stability and reliability of the transformer are maintained; in addition, the parallel arrangement of the plurality of secondary coils can effectively reduce the current and the resistance of the secondary coils, so that the energy loss is reduced, and the overall efficiency of the transformer is improved.

Drawings

FIG. 1 is a schematic diagram of a high power planar transformer in one embodiment;

FIG. 2 is a schematic diagram of an exploded construction of a high power planar transformer in one embodiment;

FIG. 3 is a schematic diagram of a partial structure of a high-power planar transformer in one embodiment;

Fig. 4 is a schematic diagram of an exploded secondary coil structure of a high-power planar transformer in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 4, the present utility model discloses a high-power planar transformer, which includes a housing 1, a magnetic core assembly 2, a primary coil assembly 3 and a secondary coil assembly 4, wherein the primary coil assembly 3 and the secondary coil assembly 4 are respectively sleeved on the magnetic core assembly 2, and the primary coil assembly 3 and the secondary coil assembly 4 are sequentially stacked; the core assembly 2, the primary winding group 3 and the secondary winding group 4 are accommodated and mounted in the case 1. Specifically, the primary coil set 3 includes a plurality of primary coils 31, the secondary coil set 4 includes a plurality of secondary coils 41, the plurality of primary coils 31 and the plurality of secondary coils 41 are respectively sleeved on the magnetic core assembly 2, and the plurality of primary coils 31 and the plurality of secondary coils 41 are respectively stacked alternately in sequence, thereby forming a high-power flat transformer main body. In the present embodiment, several secondary coils 41 are connected in parallel. The high-power flat-plate transformer improves the output power of the transformer in a mode of alternately stacking the primary and secondary coils, in practical application, a plurality of secondary coils 41 run on the same magnetic circuit, and the secondary coils 41 are connected in parallel, so that the power bearing capacity of the transformer is effectively improved, and each secondary coil 41 can be responsible for a part of load through connecting the plurality of secondary coils 41 in parallel, so that the total power bearing capacity of the transformer is effectively improved; meanwhile, the stacked parallel arrangement mode can share the heat load of each secondary coil 41, so that better heat dissipation is facilitated, and the running stability and reliability of the transformer are maintained; in addition, the parallel arrangement of the plurality of secondary coils 41 can effectively reduce the current and the resistance of the secondary coils 41, thereby reducing the energy loss and improving the overall efficiency of the transformer.

Further, the secondary coil set 4 includes n secondary coils 41, and the primary coil set 3 includes n+1 primary coils 31, where the n+1 primary coils 31 and the n secondary coils 41 are stacked alternately in sequence, so that when the primary coils 31 and the secondary coils 41 are stacked, one primary coil 31 is used as a start end, the other primary coil 31 is used as a stop end, and the primary coils are sequentially sleeved on the side surface of the magnetic core assembly 2.

Further, the high-power flat transformer comprises a plurality of first insulating paper layers 5, and the plurality of first insulating paper layers 5 are respectively arranged between two adjacent primary coils 31 and secondary coils 41, so that the insulating strength between the adjacent primary coils 31 and secondary coils 41 is improved.

Further, each secondary coil 41 includes a plurality of copper sheets 411 and a plurality of second insulating paper layers 412, and the plurality of copper sheets 411 and the plurality of second insulating paper layers 412 are stacked alternately in sequence, so as to form a stacked copper sheet 411 winding. The overall thickness of the laminated copper sheet 411 winding is thinner than that of a normal copper wire winding, which allows more conductors to be accommodated in a limited space; in addition, the laminated copper sheet 411 has relatively small winding resistance and good heat dissipation performance, so that the temperature of a conductor can be effectively reduced, the output efficiency of the transformer is improved, and the loss is reduced; meanwhile, the laminated copper sheet 411 winding can provide higher current load capacity, so that the output power of the transformer is effectively improved.

Further, the secondary coil set 4 further includes a plurality of first connection copper columns 42, and the two secondary coils 41 are connected in parallel through the two first connection copper columns 42, specifically, two ends of one first connection copper column 42 are respectively connected with the input ends of the two secondary coils 41, and two ends of the other first connection copper column 42 are respectively connected with the output ends of the two secondary coils 41.

Further, the secondary coil set 4 further includes a second connection copper pillar 43, and the plurality of secondary coils 41 are respectively connected to the second connection copper pillar 43, so that the plurality of secondary coils 41 are connected in parallel through the second connection copper pillar 43.

Further, the primary coil set 3 includes a plurality of connection copper wires 32 and two wire collecting posts 33, and the two connection copper wires 32 are respectively connected to an input end and an output end of a primary coil 31; a plurality of connecting copper wires 32 connected to the input ends of the primary coils 31 are collected by a wire collecting column 33; the plurality of connection copper wires 32 connected to the output ends of the plurality of primary coils 31 are collected by means of a further collector post 33.

Further, the magnetic core assembly 2 includes two magnetic core seats 21 and two magnetic cores 22, the two magnetic cores 22 are respectively corresponding to the two magnetic core seats 21 one by one, one end of each magnetic core 22 is connected to the inner surface of the bottom wall of the corresponding magnetic core seat 21, and the other end of each magnetic core 22 extends a preset distance away from the magnetic core seat 21; the two magnetic core seats 21 are oppositely buckled and connected, and the end faces of the two magnetic cores 22, which are opposite to the corresponding magnetic core seats 21, are matched and connected, so that the whole magnetic core assembly 2 is formed. Specifically, the primary coils 31 and the secondary coils 41 are respectively sleeved on the side surfaces of the two corresponding magnetic cores 22.

Further, the housing 1 includes a base 11, two side walls 12 and a top wall 13, and one end of the magnetic core assembly 2 is disposed on a top surface of the base 11; the two side walls 12 are clamped on the two side surfaces of the magnetic core assembly 2; the top wall 13 is buckled with the other end of the magnetic core assembly 2; one ends of the two side walls 12 are respectively connected to two ends of the base 11, and the other ends of the two side walls 12 are respectively connected to two ends of the top wall 13, so that the magnetic core assembly 2 is stably installed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A high power planar transformer, comprising: the magnetic core assembly is sleeved with the primary coil assembly and the secondary coil assembly respectively, and the primary coil assembly and the secondary coil assembly are stacked in sequence; the magnetic core assembly, the primary coil set and the secondary coil set are accommodated and installed in the shell;

The primary coil group comprises a plurality of primary coils, the secondary coil group comprises a plurality of secondary coils, the primary coils and the secondary coils are respectively sleeved on the magnetic core assembly, and the primary coils and the secondary coils are respectively stacked alternately in sequence;

and a plurality of secondary coils are connected in parallel.

2. The high power flat panel transformer according to claim 1, wherein the secondary coil group comprises n secondary coils, and the primary coil group comprises n+1 primary coils, wherein n+1 primary coils and n secondary coils are alternately stacked in sequence.

3. The high-power planar transformer according to claim 1, wherein the high-power planar transformer comprises a plurality of first insulating paper layers, and the plurality of first insulating paper layers are respectively arranged between two adjacent primary coils and secondary coils.

4. The high power planar transformer of claim 1, wherein each secondary coil comprises a plurality of copper sheets and a plurality of second insulating paper layers, the plurality of copper sheets and the plurality of second insulating paper layers being alternately stacked in sequence to form a stacked copper sheet winding.

5. The high-power flat transformer according to claim 1, wherein the secondary coil group further comprises a plurality of first connection copper columns, two secondary coils are connected in parallel through the two first connection copper columns, two ends of one first connection copper column are respectively connected with the input ends of two secondary coils, and two ends of the other first connection copper column are respectively connected with the output ends of two secondary coils.

6. The high power flat panel transformer according to claim 1, wherein the secondary coil group further comprises a second connection copper post, and a plurality of the secondary coils are respectively connected to the second connection copper post, so that the plurality of the secondary coils are connected in parallel through the second connection copper post.

7. The high-power planar transformer according to claim 1, wherein the primary coil group comprises a plurality of connection copper wires and two wire concentration posts, and the two connection copper wires are respectively connected to an input end and an output end of the primary coil; the connecting copper wires connected to the input ends of the primary coils are converged through one wire collecting column; and the connecting copper wires connected to the output ends of the primary coils are converged through the other wire collecting column.

8. The high-power flat transformer according to claim 1, wherein the magnetic core assembly comprises two magnetic core seats and two magnetic cores, the two magnetic cores are respectively in one-to-one correspondence with the two magnetic core seats, one end of each magnetic core is connected to the inner surface of the bottom wall of the corresponding magnetic core seat, and the other end of each magnetic core extends away from the magnetic core seat by a preset distance; the two magnetic core seats are oppositely buckled and connected, and the two magnetic cores are in matched connection with the end faces of the corresponding magnetic core seats back to back.

9. The high-power planar transformer according to claim 8, wherein a plurality of said primary coils and a plurality of said secondary coils are respectively sleeved on the corresponding two side surfaces of said magnetic core.

10. The high power flat panel transformer according to claim 1, wherein the housing comprises a base, two side walls and a top wall, and one end of the magnetic core assembly is disposed on a top surface of the base; the two side walls are clamped on the two side surfaces of the magnetic core assembly; the top wall is buckled at the other end of the magnetic core assembly; one end of each side wall is connected to two ends of the base, and the other end of each side wall is connected to two ends of the top wall.