CN221040777U - Magnetic integrated LLC transformer - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to a magnetic integrated LLC transformer which comprises a base, a winding frame, a coil and a magnetic core, wherein the winding frame, the coil and the magnetic core are arranged on the base, the winding frame comprises a first winding frame and a second winding frame, the coil comprises a transformer coil and an inductance coil, the transformer coil and the inductance coil are connected in series, the transformer coil and the inductance coil are respectively wound on the first winding frame and the second winding frame, the magnetic core comprises a plurality of E-shaped magnetic cores which are respectively arranged in the first winding frame and the second winding frame, X-shaped supporting structures are respectively arranged at the outer sides of two ends of the first winding frame and the second winding frame and are respectively used for supporting a coil tap and abutting the base, and a mounting groove with a flange is arranged on the base.

Description

Magnetic integrated LLC transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a magnetic integrated LLC transformer.

Background

Most of the existing LLC transformers are composed of a resonant inductance winding and a transformer, and the resonant inductance winding and the transformer are two independent devices.

The development trend of the current society is that electronic equipment is being miniaturized, integrated and thinned, and the traditional LLC transformer is relatively large in size due to the fact that a resonant inductance winding and the transformer are two independent components, so that the common LLC transformer cannot meet the increasingly compact design space, the structure of the transformer is more compact, and the problems of heat dissipation and structural stability of the transformer are needed to be considered.

Therefore, there is a need to design an LLC transformer that can meet current design requirements.

Disclosure of utility model

In order to solve the problems, the magnetic integrated LLC transformer provided by the utility model integrates the resonant inductor into the transformer, so that the whole volume is reduced, the structure is simplified, and the processing is easier.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a magnetism integrated form LLC transformer, includes the base and installs bobbin, coil and the magnetic core on the base, the bobbin includes first bobbin and second bobbin, first bobbin and second bobbin are coaxial arrangement, the coil includes transformer coil and inductance coil, transformer coil and inductance coil are series connection, just transformer coil and inductance coil wind respectively on first bobbin and second bobbin, and the magnetic core is installed in first bobbin and second bobbin.

Optionally, in an embodiment of the present utility model, the base is provided with a mounting groove with a flange around the coil, for stably mounting the magnetic core.

Optionally, in an embodiment of the present utility model, the magnetic core includes a plurality of E-shaped magnetic cores, and the plurality of E-shaped magnetic cores are respectively installed in the first winding frame and the second winding frame.

Optionally, in an embodiment of the present utility model, two ends of the first winding frame and the second winding frame are respectively provided with an X-shaped supporting structure, a tap of the upper limiting and supporting coil of the supporting structure is located on the upper portion of the supporting structure, and the lower portion of the supporting structure is abutted to the base.

Optionally, in an embodiment of the present utility model, a position of the base corresponding to the mounting frame is a hollowed-out structure, so as to dissipate heat and save raw materials.

Optionally, in an embodiment of the present utility model, the coil is a double lap winding.

Optionally, in an embodiment of the present utility model, two ends of the base are pin mounting portions, and two pin mounting holes are respectively formed in the pin mounting portions at two ends, for mounting taps of the transformer coil and the inductance coil.

The utility model has the beneficial effects that

The magnetic integrated LLC transformer is characterized in that a detachable magnetic core is arranged in a transformer coil and an inductance coil, a magnetic path is formed by combining a plurality of magnetic cores, and a resonant inductor is integrated into the transformer, so that the whole volume is reduced, and the whole transformer is flat and rectangular and is suitable for being installed in a relatively compact and long space; the base is provided with the hollowed structure, the magnetic core is horizontally installed, large-area heat dissipation is provided for the top and the bottom of the coil, the stable operation of the transformer is guaranteed, the base is provided with the installation groove with the flange, and the magnetic core can be stably installed to prevent deflection.

Drawings

In order to more clearly illustrate the embodiments of the present utility model 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.

Fig. 1 is a schematic diagram of the overall structure of a transformer according to embodiment 1 of the present utility model;

Fig. 2 is a schematic diagram 1 of a transformer structure according to embodiment 1 of the present utility model;

fig. 3 is a schematic diagram of a coil structure according to embodiment 1 of the present utility model;

FIG. 4 is a schematic diagram of an E-shaped magnetic core according to embodiment 1 of the present utility model;

Reference numerals: base 1, mounting groove 101, flange 102, pin mount 103, magnetic core 2, transformer coil 3, primary winding 301, secondary winding 302, insulating sleeve 303, inductor coil 4, bobbin 5, support structure 501.

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.

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Examples

In order to meet the design requirements of compact installation, miniaturization and integration, a magnetic integrated LLC transformer is designed, and the specific scheme is as follows:

As shown in fig. 1-4, a magnetically integrated LLC transformer includes a base 1, a bobbin 5 mounted on the base 1, a coil and a magnetic core 2, the bobbin 5 includes a first bobbin 5 and a second bobbin 5, the first bobbin 5 and the second bobbin 5 are coaxially mounted, the coil includes a transformer coil 3 and an inductor coil 4, the transformer coil 3 and the inductor coil 4 are connected in series, the transformer coil 3 and the inductor coil 4 are wound on the first bobbin 5 and the second bobbin 5, respectively, and the magnetic core 2 is mounted in the first bobbin 5 and the second bobbin 5.

The two ends of the first bobbin 5 and the two ends of the second bobbin 5 correspond to functions as a separator to separate the transformer coil 3 from the inductor coil 4.

The base 1 is provided with a mounting groove 101 with a flange 102 around the coil, and is used for stably mounting the magnetic core 2, after the magnetic core 2 is mounted, the bottom surface of the magnetic core 2 is attached to the surface of the mounting groove 101, and the outer wall of the magnetic core 2 is attached to the flange 102.

Specifically, base 1 is rectangular frame structure, and base 1 is inside to be used for installing bobbin 5, and base 1 edge is used for installing magnetic core 2, and base 1 both ends are pin installation department 103 for install the coil and take a percentage, and the clearance mouth has been seted up at the both ends that mounting groove 101 corresponds bobbin 5 for the heat of bottom is dispelled.

The magnetic core 2 comprises a plurality of E-shaped magnetic cores 2, and the E-shaped magnetic cores 2 are respectively arranged in the first winding frame 5 and the second winding frame 5.

In this embodiment, the magnetic core 2 is manganese zinc ferrite, the magnetic core 2 includes three E-shaped magnetic cores 2, three E-shaped magnetic cores 2 are installed for horizontal, the middle lateral wall of the E-shaped magnetic cores 2 and the two ends of the reel 5 are in profiling design, the upper edge and the lower edge of the middle lateral wall of the E-shaped magnetic cores 2 are respectively used for being abutted to the supporting structure 501 of the X type, the strength of the supporting structure 501 is guaranteed, the top of the transformer is avoided, the two E-shaped magnetic cores 2 are respectively installed on the two sides of the first reel 5, during assembly, the E-shaped magnetic cores 2 are inserted from the two ends of the first reel 5, the other E-shaped magnetic cores 2 are installed in the second reel 5, during assembly, the E-shaped magnetic cores 2 are inserted from the outer end of the second reel 5, and the inner end of the E-shaped magnetic cores 2 are abutted to the outer wall of the other E-shaped magnetic cores 2, so as to form a coherent magnetic core 2.

The two ends of the first winding frame 5 and the second winding frame 5 are respectively provided with an X-shaped supporting structure 501, taps of the upper limiting bearing coils of the supporting structures 501 are arranged, and the lower parts of the supporting structures 501 are abutted to the base 1.

Specifically, the supporting structure 501 protrudes outwards, so that the supporting structure 501 can be abutted against the E-shaped magnetic core 2, and a mounting round hole is formed in the centers of the first winding frame 5 and the second winding frame 5 and used for inserting a center post of the E-shaped magnetic core 2.

The position of the base 1 corresponding to the mounting frame is a hollowed structure and is used for radiating heat and saving raw materials, the bottom surface of the base 1 is positioned on the same plane except pins, the contact area between the transformer mounting and the circuit board is larger, and the mounting is more stable.

The coil is a double-layer lap winding.

The transformer coil 3 comprises a primary winding 301 and a secondary winding 302, an inner layer coil is the primary winding 301, an outer layer coil is the secondary winding 302, an insulating sleeve 303 is arranged between the primary winding 301 and the secondary winding 302 and used for isolation, two ends of the base 1 are provided with pin mounting parts 103, and the pin mounting parts 103 at the two ends are respectively provided with two pin mounting holes for mounting taps of the transformer coil 3 and the inductance coil 4.

Specifically, the transformer coil 3 and the inductance coil 4 are double-layered windings, and a tap of the primary winding 301 of the transformer coil 3 and a tap of the inductance coil 4 are connected with each other, so that the transformer coil 3 and the inductance coil 4 form a whole, a tap of the inductance coil 4 is mounted in one of the mounting holes, a tap of the secondary winding 302 of the transformer coil 3 is led out from an inner end and passes over the top of the transformer coil 3 and is connected with one of the mounting holes, two taps are led out from an outer end of the transformer coil 3, the other tap of the secondary winding 302 is connected with the mounting hole on the corresponding side, and the other tap of the primary winding 301 passes over the tops of the transformer coil 3 and the inductance coil 4 and is connected with the mounting hole on the other side.

Assembly of transformers

First, a plurality of magnetic cores 2 are mounted in a bobbin 5, then a coil is wound around the outer wall of the bobbin 5, and after the coil is wound, the assembled structural member is mounted on a base 1.

The magnetic integrated LLC transformer of this scheme sets up magnetic core 2 in bobbin 5, forms the magnetic path, plays resonant inductance's effect, makes LLC transformer volume reduce, and processing is more convenient, and LLC transformer is whole to be rectangular structure, is applicable to and installs in compact long and narrow space, on structural design, and the top and the bottom of transformer all provide large tracts of land heat dissipation, and the transformer heat can directly give off to the air, and base 1's edge is equipped with the mounting groove 101 of subsidiary flange 102, can make magnetic core 2 stably install on base 1.

Examples

In this embodiment, the transformer structure is basically the same as that in embodiment 1, except that the first bobbin 5 and the second bobbin 5 are designed in a hollow structure, so that the internal magnetic core 2 is convenient for heat dissipation.

Examples

In this embodiment, the transformer structure is basically the same as that in embodiment 1, except that a circular hole penetrating right and left is provided in the center of the magnetic core 2 for heat dissipation of the magnetic core 2.

The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present utility model.

Although the present utility model has been described in terms of the preferred embodiments, it should be understood that the present utility model is not limited to the specific embodiments, but is capable of numerous modifications and equivalents, and alternative embodiments and modifications of the embodiments described above, without departing from the spirit and scope of the present utility model.

Claims (7)

1. The utility model provides a magnetism integrated form LLC transformer, includes the base and installs bobbin, coil and the magnetic core on the base, its characterized in that, the bobbin includes first bobbin and second bobbin, first bobbin and second bobbin are coaxial arrangement, the coil includes transformer coil and inductance coil, transformer coil and inductance coil are series connection, just transformer coil and inductance coil wind respectively on first bobbin and second bobbin, and the magnetic core is installed in first bobbin and second bobbin.

2. A magnetically integrated LLC transformer according to claim 1, wherein the base is provided with mounting slots with ribs around the coil for stable mounting of the core.

3. The magnetically integrated LLC transformer of claim 1 wherein the core includes a plurality of E-shaped cores mounted in the first and second bobbins, respectively.

4. The magnetically integrated LLC transformer of claim 1, wherein the first and second bobbins are provided with X-shaped support structures at both ends, taps of the upper limit bearing coils of the support structures, and lower portions of the support structures are abutted to the base.

5. The magnetically integrated LLC transformer of claim 1, wherein the base is hollowed out for heat dissipation and raw material saving.

6. A magnetically integrated LLC transformer according to claim 1, wherein the coil is a double stacked winding.

7. The magnetically integrated LLC transformer of claim 1, wherein the base has two pin mounting portions at each end, the two pin mounting portions at each end having two pin mounting holes for mounting taps of the transformer coil and the inductor coil, respectively.