CN218866870U

CN218866870U - Transformer and equipment of integrated resonance inductance

Info

Publication number: CN218866870U
Application number: CN202221949955.8U
Authority: CN
Inventors: 林隆涛; 王晓卫; 孙晓平; 汤大卫
Original assignee: Shenzhen Zhenhua Microelectronics Co Ltd
Current assignee: Shenzhen Zhenhua Microelectronics Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-04-14
Anticipated expiration: 2032-07-26

Abstract

The application provides a transformer and equipment integrating a resonant inductor, wherein the transformer integrating the resonant inductor comprises a transformer component, two resonant inductor components and two isolation plates; the transformer assembly comprises two transformer magnetic cores, two primary windings and two secondary windings, wherein the two primary windings are axially provided with first through holes in a penetrating manner, the two transformer magnetic cores are symmetrically arranged, first convex columns are arranged at the inner ends of the two transformer magnetic cores in a protruding manner, the free ends of the two first convex columns are respectively inserted into the first through holes, the tops of the free ends are mutually abutted, and each secondary winding is sleeved on one primary winding; each resonance inductance assembly comprises a resonance inductance magnetic core and a resonance inductance winding, a second through hole is formed in the resonance inductance winding in an axial penetrating mode, a second convex column is arranged at the inner end, facing the transformer assembly, of the resonance inductance magnetic core, and the free end of the second convex column is inserted into the second through hole. The utility model discloses an integrated structural design reduces the whole volume of integrated resonance inductance's transformer, reduces the material quantity.

Description

Transformer and equipment of integrated resonance inductance

Technical Field

The utility model relates to a transformer technical field especially relates to a transformer and equipment of integrated resonance inductance.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and has the main functions of: voltage transformation, current transformation, impedance transformation, isolation, and the like.

In the technology of an aircraft system, the requirements of high input, high power density and high reliability on a power supply are generally met, and the power supply is generally processed by adopting the resonant converter technology. The traditional resonant converter technology adopts the combination of a transformer and a resonant inductor, and the transformer and the resonant inductor are respectively and independently arranged elements, so that the occupied space volume is large. Conventional resonant converter techniques are therefore not suitable for use in scenarios where the volume of space is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a save space volume, modular design's integrated resonance inductance's transformer.

The embodiment provides a transformer integrated with resonant inductors, which comprises a transformer assembly, two resonant inductor assemblies and two isolation plates;

the two resonance inductance assemblies are symmetrically arranged relative to the transformer assembly, and the isolation plates are respectively arranged between the transformer assembly and the two resonance inductance assemblies;

the transformer assembly comprises two transformer magnetic cores, two primary windings and two secondary windings, wherein the two primary windings are axially provided with first through holes in a penetrating manner, the two transformer magnetic cores are symmetrically arranged, first convex columns are arranged at the inner ends of the two transformer magnetic cores in a protruding manner, the free ends of the two first convex columns are respectively inserted into the first through holes, the tops of the free ends are mutually abutted, and each secondary winding is sleeved on one primary winding;

every resonance inductance subassembly includes resonance inductance magnetic core, resonance inductance winding axial runs through and is equipped with the second through-hole, resonance inductance magnetic core towards the inner of transformer subassembly is provided with the second projection, the free end of second projection inserts the second through-hole.

In one implementation, the two transformer cores are arranged in a U shape, and the U-shaped opening faces the transformer cores.

In one implementation, the resonant inductor core is provided in a U-shape with the U-shaped opening facing the transformer assembly.

In one implementation, the first and second posts are coaxially disposed.

In one implementation, the inductance of the resonant inductor component is inversely proportional to the thickness of the spacer plate.

In one implementation, the body of the secondary winding is a flat-bottomed U-shaped groove structure.

In one implementation, the transformer integrated with resonant inductors further includes an assembly base, and the transformer assembly and the two resonant inductor assemblies are both disposed on the assembly base;

the assembling base is provided with eight mounting holes and four mounting seams, each primary winding and each resonant inductor winding are provided with two connecting pins, one connecting pin is inserted into one mounting hole, and the edge of a U-shaped opening of each secondary winding is inserted into the mounting seam.

In one implementation, the assembly base is made of an epoxy board.

In one implementation, the primary winding is formed by laminating multiple layers of PCBs, and the secondary winding is made of copper foil.

In one implementation, an apparatus includes the transformer with integrated resonant inductor described above.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

the transformer of foretell integrated resonance inductance through adopting integrated structure design with transformer subassembly and two resonance inductance subassemblies, and two resonance inductance subassemblies share transformer subassembly's magnetic circuit, for transformer, the independent structural design of resonance inductance in the traditional resonance inductance converter technique, can reduce the whole volume of integrated resonance inductance's transformer greatly, reduce the material quantity to because its modular design, can also reduce assembly work load.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a transformer integrated with a resonant inductor according to an embodiment of the present invention;

FIG. 2 is an exploded view of the transformer integrated with resonant inductor shown in FIG. 1;

fig. 3 is a schematic circuit diagram of a transformer integrated with resonant inductor according to an embodiment of the present invention.

Wherein: 10. assembling a base; 20. a transformer core; 30. a primary winding; 40. a secondary winding; 50. a resonant inductor core; 60. a resonant inductor winding; 70. and (4) a partition board.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the present embodiment provides a transformer integrated with a resonant inductor, including: a transformer assembly, two resonant inductor assemblies, two isolation plates 70;

the two resonant inductance assemblies are symmetrically arranged around the transformer assembly, and the isolation plates 70 are respectively arranged between the transformer assembly and the two resonant inductance assemblies;

the transformer assembly comprises two transformer magnetic cores 20, two primary windings 30 and two secondary windings 40, wherein the two primary windings 30 are axially provided with first through holes in a penetrating manner, the two transformer magnetic cores 20 are symmetrically arranged, first convex columns are convexly arranged at the inner ends of the two transformer magnetic cores 20, the free ends of the two first convex columns are respectively inserted into the first through holes, the tops of the free ends are mutually abutted, and each secondary winding 40 is respectively sleeved on one primary winding 30;

every resonance inductance subassembly includes resonance inductance magnetic core 50, resonance inductance winding 60 axial is run through and is equipped with the second through-hole, resonance inductance magnetic core 50 towards the inner of transformer subassembly is provided with the second projection, the free end of second projection inserts the second through-hole.

Two resonance inductance components are arranged symmetrically with respect to the transformer component, as shown in fig. 2, the resonance inductance components are arranged on the left side and the right side of the transformer component respectively, and the installation direction does not need to be identified due to the symmetrical arrangement, so that the assembly is facilitated. The first convex column and the second convex column are coaxially arranged, and the reliability of working performance is improved.

The free ends of the first convex columns of each transformer magnetic core are respectively inserted into the first through holes, and the tops of the free ends are mutually abutted, as shown in fig. 2, the tops of the free ends of the two first convex columns are of convex structures, the installation direction does not need to be identified, and therefore assembly is facilitated.

Foretell transformer of integrated resonance inductance, through adopting integrated modular structure design with transformer subassembly and resonance inductance subassembly, two resonance inductance subassemblies share the magnetic circuit of transformer subassembly, for transformer in the traditional converter technique, resonance inductance independent structural design, on the one hand can reduce the whole volume of integrated resonance inductance's transformer greatly, reduce the material quantity, alleviate the weight of integrated resonance inductance's transformer, on the other hand has reduced the complexity of integrated resonance inductance's transformer design, reduce power loss. Meanwhile, the modular assembly operation of the transformer integrated with the resonant inductor is convenient, the assembly workload can be reduced, the production efficiency is high, and the consistency and the controllability of the transformer integrated with the resonant inductor are improved.

Optionally, two of the transformer cores 20 are disposed in a U shape, and an opening of the U shape faces the transformer cores. The volume of the transformer core 20 is reduced, thereby reducing the production cost.

Optionally, the resonant inductor core 50 is disposed in a U shape, and an opening of the U shape faces the transformer assembly. The volume usage of the resonant inductor core 50 is reduced, thereby reducing the production cost. Wherein, be equipped with the recess on resonance inductance magnetic core 50, when resonance inductance magnetic core 50 was dismantled to needs, this recess of accessible was dismantled, makes things convenient for resonance inductance magnetic core's production design simultaneously.

In one embodiment, the primary winding 30 is formed by laminating multiple layers of PCBs, and the secondary winding 40 is formed of copper foil.

Specifically, the primary winding 30 is a Printed Circuit Board (PCB for short), the multiple layers of PCBs may be connected in parallel or in series according to actual requirements, and when a plurality of coils are needed, the multiple layers of PCBs are connected in series, and when a large output current is needed, the multiple layers of PCBs are connected in parallel. The PCB has the characteristics of fixed parasitic parameters, strong manufacturability and good environmental adaptability, so that the transformer parameters have consistency. The secondary winding 40 is made of copper foil, and the cross section area of the copper foil is large, so that large current can be output. Two resonance inductance assembly sharing transformer assembly's magnetic circuit, transformer assembly and resonance inductance assembly share yoke promptly and form the magnetism integration to save discrete resonance inductance cost, space volume. Compared with manual winding on a winding, the coil is realized in the PCB in the embodiment, and the PCB with more than one layers is needed to be laminated by more than one coil, for example, the PCB with 3 layers is laminated by 6 turns of coils, so that the fussy wiring cost is reduced, and the problems of interlayer short circuit and unevenness of the coil are not easy to occur.

Optionally, the separator plate 70 is an epoxy plate. Because the epoxy board has low cost, the epoxy board is used as the isolation board 70, and the production cost is reduced.

In one embodiment, the inductance of the resonant inductor assembly is inversely related to the thickness of the spacer 70. The thickness of the isolation board 70 can be adjusted according to the requirement, and the inductance of the resonant inductor assembly is adjusted according to the thickness of the isolation board 70, so that the inductance of the resonant inductor assembly influences the conversion efficiency of power conversion. Illustratively, when the power conversion efficiency is required to be the highest, that is, the inductance of the resonant inductance component is required to be the maximum, the thickness of the isolation plate may be 0.5mm, and the inductance of the resonant inductance component reaches the maximum.

In one embodiment, the body of the secondary winding 40 is a flat-bottomed U-shaped groove structure. The body of secondary winding 40 is a flat-bottomed U-shaped groove structure. As shown in fig. 2, the secondary winding 40 is sleeved on the primary winding 30, and the secondary winding 40 is a flat-bottom U-shaped groove structure, so that the secondary winding 40 is better sleeved on the primary winding 30, the stability and accuracy of the secondary winding 40 being installed on the primary winding 30 are improved, and the flat-bottom U-shaped groove structure of the secondary winding 40 reduces the volume of the secondary winding 40 and reduces the production cost.

In an embodiment, the transformer with integrated resonant inductor further comprises a mounting base 10, and the transformer assembly and the two resonant inductor assemblies are both disposed on the mounting base 10; the assembly base 10 is provided with eight mounting holes and four mounting slits, each of the primary winding 30 and each of the resonant inductor windings 60 are provided with two connecting pins, one of the connecting pins is inserted into one of the mounting holes, and the U-shaped opening edge of each of the secondary windings 40 is inserted into the mounting slits. Because the plug-in mounting mode is adopted, the disassembly and the assembly are convenient. It can be understood that, when the transformer assembly, the resonant inductor assembly and the secondary winding 40 need to be added, the mounting holes and the mounting slits on the assembly base 10 can also be added according to actual requirements.

Preferably, the material of the assembly base 10 is an epoxy plate. It is understood that the assembly base 10 can be made of plastic or other high temperature insulating materials, but as a whole, because the cost of the epoxy board is low, the epoxy board is used as the assembly base 10, so that the production cost is reduced and the operation is easy.

As shown in fig. 2, a resonant inductor assembly, a transformer assembly and a resonant inductor assembly are sequentially disposed on the assembly base 10 from left to right, wherein the resonant inductor assembly includes a resonant inductor core 50 and a resonant inductor winding 60, an isolation board 70 is disposed in the resonant inductor assembly and the transformer assembly, and the transformer assembly includes a transformer core 20, a primary winding 30 and a secondary winding 40.

With reference to fig. 2 and 3, the working principle of the present invention is:

the utility model discloses a resonance inductance subassembly sets up on transformer assembly's both sides, and when the primary winding 30 in transformer assembly was crossed on the alternating current, transformer core 20 produced alternating magnetic field to transformer assembly's secondary winding 40 just produces the induced electromotive force, influences the power, makes the input power transform.

In an embodiment, an apparatus comprises a transformer with integrated resonant inductor as described above. The device can be a high-power supply, such as an LLC power supply, and the LLC power supply can convert high-voltage low current into low-voltage high current by adopting the transformer of the integrated resonant inductor.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer integrated with a resonant inductor, comprising: the transformer assembly, the two resonant inductor assemblies and the two isolation plates;

the transformer assembly comprises two transformer magnetic cores, two primary windings and two secondary windings, wherein the primary windings are formed by laminating multiple layers of PCBs (printed circuit boards), the two primary windings axially penetrate through the first through holes, the two transformer magnetic cores are symmetrically arranged, first convex columns are convexly arranged at the inner ends of the two transformer magnetic cores, the free ends of the two first convex columns are respectively inserted into the first through holes, the tops of the free ends are mutually abutted, and each secondary winding is sleeved on one primary winding;

2. The transformer of claim 1, wherein the two transformer cores are U-shaped, and the U-shaped opening faces the transformer cores.

3. The transformer of claim 1, wherein the resonant inductor core is U-shaped with the U-shaped opening facing the transformer assembly.

4. The transformer of claim 1, wherein the first boss and the second boss are coaxially disposed.

5. The transformer of claim 1, wherein the inductance of the resonant inductor assembly is inversely related to the thickness of the spacer plate.

6. The transformer of claim 1, wherein the body of the secondary winding is a flat-bottomed U-shaped slot structure.

7. The transformer of claim 6, further comprising a mounting base on which the transformer assembly and both of the resonant inductor assemblies are disposed;

8. The transformer of claim 7, wherein the assembly base is made of epoxy board.

9. The transformer of claim 1, wherein the secondary winding comprises copper foil.

10. An apparatus, characterized by: the apparatus comprising a transformer with integrated resonant inductance as claimed in any one of the preceding claims 1 to 9.