CN102360807A - Transformer - Google Patents

Abstract

The invention relates to a transformer. The transformer comprises an interstar winding made of metal, wherein the interstar winding is formed by connecting a plurality of zigzag metal plates sequentially end to end and overlying the metal plates layer by layer; through holes which are formed by overlying the metal plates are formed on the surface of the interstar winding; and magnetic cores are inserted into the through holes. The invention overcomes the defects in the prior art and provides the transformer, which has a simple structure, a good cooling effect, high dissipation, high efficiency, compact structure and high power.

Description

Transformer

[technical field]

The present invention relates to a kind of transformer, be specifically related to the transformer that practical dioptric type winding is made multipath magnetic circuit, multistage transformer.

[background technology]

General transformer is made up of two important original papers, i.e. magnetic core and winding.Magnetic core is the middle original paper of electric energy conversion, and its effect is to add high-intensity magnetic field, improves the electromagnetic energy conversion efficiency.Winding is divided into input winding and output winding by function, and the input winding converts electrical energy into magnetic field energy, and the output winding converts magnetic energy into electric energy output, through input winding and the different realization transformations of output umber of turn.

This transformer can have the following disadvantages:

One of which, because the winding of existing transformer all is to be wound on the magnetic core all over the ground through coil one circle one.Like this can be cumbersome in the course of processing, the time is long.

Its two because that transformer produces heat is more, but the time heat dispersion poor, usually can cause temperature too high, transformer's life span is shortened.

Its three since existing two mutually or the transformer of three-phase be single magnetic Circuit Design, power concentration like this, it is higher generate heat, the more difficulty of lowering the temperature, efficient is lower.

Its four, the winding manufacturing process of high-power transformer is very complicated, prior manufacturing method has very big pressure on manufacturing cost.

Its five, the price of copper conductor constantly rises on the market, manufacturing brings bigger pressure to transformer.

[summary of the invention]

The present invention seeks to have overcome deficiency of the prior art and a kind of perfect heat-dissipating, high efficiency, compact conformation, powerful transformer are provided.

In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposal:

Transformer; It is characterized in that including the tortuous winding that is made of metal; This complications winding is connected successively by the tortuous metallic plate initial and end of multi-disc and forms from stack back successively, and the through hole that forms by after the metallic plate stack is arranged on the surface of tortuous winding, in through hole, is inserted with magnetic core.

Aforesaid transformer is characterized in that the metallic plate that described metallic plate 2 is become by metallic aluminium or copper.

Aforesaid transformer is characterized in that described metallic plate 2 is the M shape, the welding of adjacent metal plate 2 initial and end two ends.

Aforesaid transformer is characterized in that the number of said through hole 4 has three.

Aforesaid transformer is characterized in that leaving between adjacent metal plate 2 surfaces gap of mutually insulated.

Aforesaid transformer is characterized in that what said metallic plate 2 was formed behind stamping-out by a block length strip metal plate.

Aforesaid transformer is characterized in that said tortuous winding 1 has the 2-3 group.

Aforesaid transformer is characterized in that said tortuous winding 1 has at least one group to be to import winding and have at least one group to be the output winding.

The present invention compared with prior art has following advantage:

The present invention utilizes the meander configuration winding to replace the coil of conventional use, has solved the more problem of transformer generation heat under the special purpose, has improved heat dispersion, and has guaranteed the high efficiency and the integrally-built compactedness of electric energy output through the multipath magnetic circuit design.

Its two, the present invention adopts multipath magnetic circuit design, multipath magnetic circuit can realize that power division reduces gross thickness, improves cooling efficient, adopts the method for salary distribution of three magnetic circuits here.

Its three, three magnetic circuit power division forms of three-phase transforming circuit and every phase.Input winding and output winding; Be respectively to be one group with certain number of turn, the input winding is spaced apart with the output winding, the induction efficiency that this mode effectively promotes; Simultaneously can also pass through winding connection, under the situation that does not change umber of turn, realize multiple transformation mode.

Its four, adopt multipath magnetic circuit to use tortuous winding manufacturing technology simultaneously, can make transformer use aluminum easily, this measure can be saved a large amount of strategic materials.Reduce manufacturing cost simultaneously

Its five, adopt that the surface area of transformer increases greatly after the multipath magnetic circuit technology, heat-sinking capability greatly strengthens.

Its six, adopt after the multipath magnetic circuit technology, transformer thickness has reduced more than one times than tradition at least, helps the application at special occasions.

Its seven, adopt the transformer technology of tortuous winding, can make winding can realize easily that outside lead connects, and is convenient to obtain different output characteristic.

[description of drawings]

Fig. 1 is a decomposing schematic representation of the present invention.

Fig. 2 is the floor map of metallic plate of the present invention.

Fig. 3 is the vertical view after the present invention decomposes.

Fig. 4 is a schematic perspective view of the present invention.

[embodiment]

Describe the present invention below in conjunction with accompanying drawing:

As shown in the figure; Transformer includes the tortuous winding 1 that is made of metal, and this complications winding 1 is connected successively by tortuous metallic plate 2 initial and ends of multi-disc and forms from stack back successively; Promptly stack up successively by the polylith metallic plate; Head and the tail end with adjacent metal sheets couples together afterwards, an end of the top metallic plate and an end of bottom metallic plate can be switched on, quite " coil " of transformer.The through hole 4 that is formed by metallic plate 2 stack backs is arranged on the surface of described tortuous winding 1, in through hole 4, be inserted with magnetic core 3.The shape of through hole 4 is identical with the shape of magnetic core 3.Because adopt metallic plate as " coil ", then power improves widely.

As the optimal way of present embodiment, the metallic plate that described metallic plate 2 is become by metallic aluminium or copper.In present embodiment, metallic plate 2 adopts metallic aluminium.Metallic aluminium resistance is little, and price is low.

As the optimal way of present embodiment, described metallic plate 2 is the M shape, the welding of adjacent metal plate 2 initial and end two ends.

As the optimal way of present embodiment, the number of said through hole 4 has three, thereby realizes three magnetic circuit power division.Multipath magnetic circuit can realize that power division reduces gross thickness, improves cooling efficient.

As the optimal way of present embodiment, leave the gap of mutually insulated between adjacent metal plate 2 surfaces, this stilles highly significant of radiating effect.

As the optimal way of present embodiment, said metallic plate 2 is formed behind stamping-out by a block length strip metal plate.

As the optimal way of present embodiment, said tortuous winding 1 has the 2-3 group, realizes two-phase or three-phase transformation.

As the optimal way of present embodiment, said tortuous winding 1 has at least one group to be to import winding and have at least one group to be the output winding.Input winding and output winding; Be respectively to be one group with certain number of turn, the input winding is spaced apart with the output winding, the induction efficiency that this mode effectively promotes; Simultaneously can also pass through winding connection, under the situation that does not change umber of turn, realize multiple transformation mode.

The shape of magnetic core of transformer of the present invention has directly influenced the shape of indentation winding.In design process, main related parameter is:

The width b of the wideest layer in the wide expression stack of magnetic core tongue _Max

The width b of streak in the wide expression stack of magnetic core tongue _Min

Magnetic core number of plies n _cBe odd number

Individual layer magnetic core thickness b _f

Annotate: magnetic core evenly narrows to bilateral symmetry from interior

Its amount of narrowing equal difference a=2b then _Max-b _Min/ n _c-1

Can closely wrap up magnetic core hexagon beam overall b=n _cb _Max-b _Min/ n _c-1

Can closely wrap up magnetic core hexagon total height h=n _cb _f

Hexagon two hypotenuse angle=2arctan [n _cb _Max-b _Min/ n _c-1 ²b _f]

Magnetic circuit quantity n _z

The monolateral width b of tortuous winding _z

Between winding and magnetic core apart from d _Rc=2mm also can design as required.

Core post spacing d _zTwo core center spacings

Space structure requires d _z＞b presses d here _Rc=0mm calculates.

d _z＝b _max+b _z/cosα/2

Transformer number of phases n _x

Can know by Fig. 2:

L ₂＝2tg?α/2b _z+b _min

Area A=(b _Min+ L ₂) b _z/ 2

L ₃＝n _cb _f+b _z/cos?α/2

Monolithic winding area S=(b _Min+ L ₂) b _z/ 2+L ₃b _z

S＝[b _min+2tg?α/2b _z+b _min]b _z/2+n _cb _f+b _zb _z/cosα/2

Stock utilization $\mathrm{\η}=1-A/(A+S)$

$=1-\frac{(b\min +L2)\mathrm{bz}/2}{(b\min +L2)\mathrm{bz}/2+(b\min +L2)\mathrm{bz}/2+\mathrm{<figure-callout\; id="3"\; label="L"\; filenames="HDA0000099003500000011.png,HDA0000099003500000022.png"\; state="\{\{state\}\}">L</figure-callout>}3\mathrm{bz}}100\%$

Winding thickness d

Monolithic winding volume V=Sd=[(b _Min+ L ₂) b _z/ 2+L ₃b _z] d

Monolithic winding quality m=0.0027V

The input winding is n with output umber of turn summation ₁

Winding adds up to n ₁n _zn _x

Winding gross mass M=n ₁n _zn _xm

Transformer Winding overall height H=n ₁d

Transformer Winding overall width B=n _cb _f+ 2b _z

Transformer Winding total length L=n _zn _x+ 1d _z

＝n _zn _x+1[b _max+b _z/cosα/2]

More than all formula obtain about set of variables { b through abbreviations _Maxb _Minn _cb _fn _xD n ₁n _zb _zGroup of functions, can carry out parametrization design winding shape according to these, and judge whether its stock utilization meets designer's requirement.

In the formula: b _Max: the width of the wideest layer in the wide expression stack of iron core tongue

b _Min: the width of streak in the wide expression stack of iron core tongue

n _c: iron core number of plies n _cBe odd number

b _f: individual layer iron core thickness

n _x: the transformer number of phases

D: winding thickness

n ₁: the input winding with output umber of turn summation does

n _z: magnetic circuit quantity

b _z: the monolateral width of tortuous winding.

Claims (8)

1. transformer; It is characterized in that including the tortuous winding (1) that is made of metal; This complications winding (1) is connected successively by tortuous metallic plate (2) initial and end of multi-disc and forms from stack back successively; The through hole (4) that is formed by metallic plate (2) stack back is arranged on the surface of tortuous winding (1), in through hole (4), be inserted with magnetic core (3).

2. transformer according to claim 1 is characterized in that the metallic plate that described metallic plate (2) is become by metallic aluminium or copper.

3. transformer according to claim 1 and 2 is characterized in that described metallic plate (2) is the M shape, the welding of adjacent metal plate (2) initial and end two ends.

4. transformer according to claim 3 is characterized in that the number of said through hole (4) has three.

5. transformer according to claim 3 is characterized in that leaving between adjacent metal plate (2) surface gap of mutually insulated.

6. transformer according to claim 3 is characterized in that what said metallic plate (2) was formed behind stamping-out by a block length strip metal plate.

7. transformer according to claim 3 is characterized in that said tortuous winding (1) has the 2-3 group.

8. transformer according to claim 7 is characterized in that said tortuous winding (1) has at least one group to be to import winding and have at least one group to be the output winding.

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