CN209843468U - LLC lap winding leakage inductance reduction transformer - Google Patents

LLC lap winding leakage inductance reduction transformer Download PDF

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Publication number
CN209843468U
CN209843468U CN201920592294.XU CN201920592294U CN209843468U CN 209843468 U CN209843468 U CN 209843468U CN 201920592294 U CN201920592294 U CN 201920592294U CN 209843468 U CN209843468 U CN 209843468U
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CN
China
Prior art keywords
winding
skeleton
leakage inductance
llc
transformer
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CN201920592294.XU
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Chinese (zh)
Inventor
刘爱国
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Wuhan Cintonle Power Supply Technology Co Ltd
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Wuhan Cintonle Power Supply Technology Co Ltd
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Abstract

The utility model belongs to the technical field of the transformer technique and specifically relates to a LLC lap winding leakage inductance reduction transformer, including first winding group, second winding group, third winding group, triple insulated wire and skeleton, triple insulated wire parcel is on the skeleton, and first winding group is on the upper portion of skeleton, and second winding group is at the middle part of skeleton, and third winding group is in the lower part of skeleton. The utility model discloses beneficial effect: the utility model discloses an adjustment to transformer coiling technology structure reduces transformer leakage inductance, stray magnetic field, eddy current loss, closes on the effect to improve power conversion efficiency.

Description

LLC lap winding leakage inductance reduction transformer
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to a LLC lap winding leakage inductance reducing transformer.
Background
In the market of high-voltage power supplies, on one hand, a traditional hard switching conversion mode is adopted, and the higher the working frequency is, the higher the switching loss is, and the lower the conversion efficiency is. Meanwhile, the switching tube can generate large di/dt and du/dt during operation, so that electromagnetic interference is increased, normal operation of equipment around a power supply is influenced, and the phenomenon is particularly prominent particularly for a high-power high-voltage power supply; on the other hand, for a common-ground DC/DC high-power high-voltage power supply, since the input current is large, the output power is high, and the input, output and control parts are directly communicated in the circuit, when the power supply works, the self-control part is easily subjected to crosstalk of the power circuit and the like, so that phenomena such as self-excitation of a loop circuit or harmonic wave increase are caused, and the performance index of the power supply is reduced.
Therefore, it is necessary to provide an LLC lap-wound leakage inductance reducing transformer for the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the prior art, providing a LLC lap winding leakage inductance reducing transformer.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model provides a LLC lap winding leakage inductance reducing transformer, includes first wire winding group, second wire winding group, third wire winding group, triple insulated wire and skeleton, triple insulated wire parcel is on the skeleton, first wire winding group is around the upper portion of dress at the skeleton, second wire winding group is around the middle part of dress at the skeleton, third wire winding group is around the lower part of dress at the skeleton.
Preferably, the first winding group, the second winding group and the third winding group are bound by a high temperature adhesive tape.
Preferably, the skeleton is further connected with a plurality of fixing plates.
Preferably, the first winding group, the second winding group and the third winding group are sleeved with heat shrink tubes.
Preferably, the fixing plate is made of epoxy resin plate material.
The utility model discloses beneficial effect: the utility model discloses an adjustment to transformer coiling technology structure reduces transformer leakage inductance, stray magnetic field, eddy current loss, closes on the effect to improve power conversion efficiency.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a diagram of the winding structure of the present invention;
FIG. 2 is a structural diagram of the winding frame of the present invention;
fig. 3 is an electrical schematic diagram of the present invention.
Reference numerals: 1. a framework; 2. a first winding group; 3. a second winding group; 4. a third winding group; 5. a fixing plate; 6. a wire inlet end; 7. a wire outlet end; 8. heat shrink tubing; 9. high temperature adhesive tape.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, an LLC lap winding leakage inductance reducing transformer includes a first winding group 2, a second winding group 3, a third winding group 4, a triple insulated wire and a bobbin 1, the triple insulated wire is wrapped on the bobbin 1, the first winding group 2 is wound on the upper portion of the bobbin 1, the second winding group 3 is wound on the middle portion of the bobbin 1, and the third winding group 4 is wound on the lower portion of the bobbin 1.
Further, the first winding group 2, the second winding group 3 and the third winding group 4 are bound by a high temperature adhesive tape 9. 5
Further, skeleton 1 still is connected with a plurality of fixed plates 5, fixed plate 5 adopts epoxy plate material.
Furthermore, the leading-out ends of the first winding group, the second winding group and the third winding group are sleeved with heat shrink tubes 8.
The utility model discloses an adjustment to transformer coiling technology structure reduces transformer leakage inductance, stray magnetic field, eddy current loss, closes on the effect to improve power conversion efficiency.
According to a dowell equation and a dowell curve, carrying out stranded layered winding on the high-current NS winding; the alternating current magnetic flux density is limited within 1500 gauss, and the working frequency is limited within 150 KHZ; a plurality of stranded triple insulated wires are used, and the wires are wrapped in the middle of the magnetic pole; skin effect: using a copper sheet with a thickness of 0.5mm
Proximity effect: the output windings (copper sheets) are wound in a layered, crossed and parallel mode and are arranged on two sides of the primary side coil, the magnetomotive force of the interface of the primary side coil is reduced, the eddy current loss is reduced, and the leakage inductance is reduced.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (6)

1. The utility model provides a LLC lap-wound leakage inductance reduction transformer which characterized in that: including first wire winding group (2), second wire winding group (3), third wire winding group (4), triple insulated wire and skeleton (1), triple insulated wire parcel is on skeleton (1), first wire winding group (2) is around the upper portion of dress at skeleton (1), second wire winding group (3) is around the middle part of dress at skeleton (1), third wire winding group (4) is around the lower part of dress at skeleton (1).
2. The LLC lap-wound leakage inductance reducing transformer of claim 1, wherein: the first winding group (2), the second winding group (3) and the third winding group (4) are all bound through a high-temperature adhesive tape (9).
3. The LLC lap-wound leakage inductance reducing transformer of claim 1, wherein: the framework (1) is also connected with a plurality of fixing plates (5).
4. The LLC lap-wound leakage inductance reducing transformer of claim 1, wherein: and heat shrinkable tubes (8) are sleeved at the inlet and outlet ends of the first winding group (2), the second winding group (3) and the third winding group (4).
5. An LLC lap-wound leakage inductance reducing transformer according to claim 3, wherein: the fixing plate (5) is made of an epoxy resin plate material.
6. The LLC lap-wound leakage inductance reducing transformer of claim 4, wherein: the heat shrinkable tube (8) is made of a Teflon sleeve.
CN201920592294.XU 2019-04-26 2019-04-26 LLC lap winding leakage inductance reduction transformer Active CN209843468U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920592294.XU CN209843468U (en) 2019-04-26 2019-04-26 LLC lap winding leakage inductance reduction transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920592294.XU CN209843468U (en) 2019-04-26 2019-04-26 LLC lap winding leakage inductance reduction transformer

Publications (1)

Publication Number Publication Date
CN209843468U true CN209843468U (en) 2019-12-24

Family

ID=68914273

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920592294.XU Active CN209843468U (en) 2019-04-26 2019-04-26 LLC lap winding leakage inductance reduction transformer

Country Status (1)

Country Link
CN (1) CN209843468U (en)

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