CN103617879A

CN103617879A - Transformer structure and rectifying circuit suitable for same

Info

Publication number: CN103617879A
Application number: CN201310524988.7A
Authority: CN
Inventors: 杨森泰
Original assignee: YIJING TECHNOLOGY Co Ltd
Current assignee: YIJING TECHNOLOGY Co Ltd
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2014-03-05

Abstract

The invention relates to a transformer structure and a rectifying circuit suitable for the transformer structure. The transformer comprises a reel, wherein the periphery of the reel is provided with a plurality of separation troughs, a primary coil is evenly wound inside the separation troughs, the two ends of the primary coil form a voltage input end, a plurality of secondary conductive sheets are contained in the separation troughs, and the two ends of each secondary conductive sheet are inserted into and fixed to a fixed circuit board to be collected to form a voltage output end. The rectifying circuit suitable for the transformer comprises four switch assemblies arranged between an input power source and the voltage input end of the primary coil of the transformer in a bridge connection mode, two switch assemblies arranged between the voltage output ends of the transformer, a control circuit for controlling switching on or switching off of the switch assemblies respectively, and two inductance assemblies, wherein the two switch assemblies arranged between the voltage output ends of the transformer are grounded, one end of each inductance assembly is connected between the voltage output ends of the transformer, and the other ends of the inductance assemblies are connected to form an output end. The transformer structure can effectively reduce line loss, improve the heat dissipation efficiency, lower the cost and reduce losses of voltage conversion.

Description

Transformer device structure and applicable rectification circuit thereof

Technical field

The present invention is relevant a kind of transformer device structure and applicable rectification circuit thereof, and referring in particular to a kind ofly increases radiating efficiency, reduces volume and processing procedure cost, and reduces the wastage, promotes transformer and the rectification circuit of usefulness.

Background technology

Exchanging type power converter circuit is the switching manipulation that utilizes internal switch assembly, converts received voltage quasi position to multiple predetermined level, take switch type DC-DC converter as example, direct current quasi-position is converted to the direct current quasi-position of other level, generally all can utilize a rectification circuit, received voltage quasi position is carried out to rectification and filtering, due to being designed with of current DC-DC converter, take gradually high-effect and low-loss is development guiding, namely output adopts the formal output of low-voltage and high-current, therefore, industry all adopts and doubly flows the rectification circuit that rectification (current – doubler rectifier) circuit is used as output at present, phase can reach dynamical DC-DC converter design effect and object.

Because current-doubling rectifier is so that DC-DC converter minimizing loss is design object, but because it is consisted of a transformer and at least one Inductive component, and adopt separated setting between the two, therefore still have many problems to exist.

First, the secondary winding of the transformer of tradition current-doubling rectifier is to utilize coil winding to form in magnetic core group, because the whole surface area of coil is minimum, therefore make the integral heat sink efficiency of transformer not good, cause coil impedance to increase, and DC-DC converter mostly generally is High-current output, in the process of running, can produce a large amount of loss and heat energy, therefore, for dynamical DC-DC converter, use conventional coil canoe just can highlight above-mentioned disappearance as the transformer device structure of secondary winding.

Therefore, how to develop and a kind ofly raise the efficiency and increase heat-sinking capability, to improve the transformer device structure of above-mentioned disappearance, with and applicable rectification circuit, real is current industry problem in the urgent need to address.

Because common transformer device structure with and applicable rectification circuit have above-mentioned shortcoming, inventor is the road for those shortcoming Improvements, finally has generation of the present invention.

Summary of the invention

Main purpose of the present invention is to provide a kind of transformer device structure, can effectively reduce line loss, improving heat radiation efficiency, and reduce transformer processing procedure cost.

Another object of the present invention is to provide a kind of rectification circuit that is applicable to aforementioned transformer device structure, can reduce loss, the lifting overall efficiency of voltage transitions.

For reaching above-mentioned purpose and effect, the technical solution adopted in the present invention is:

A transformer device structure, it at least comprises: a drum stand, there is a medium pore running through, entreat hereinto the outer circumferential side in hole to be provided with most vertical separation troughs at this medium pore; One primary coil, is uniformly distributed each separation trough that is wrapped in aforementioned drum stand and is formed, and two ends of aforementioned primary coil is to form voltage input end by metal enamel conductor; Most secondary conducting strips, are to be bent into and to be met at least part outer peripheral edges shape of drum stand by sheet metal, and can be contained in respectively in each separation trough, at two ends of each secondary conducting strip, are respectively equipped with a protruding interpolating unit; At least one E shape iron core, has a pars intermedia and two other sidepieces thereof, and aforementioned pars intermedia can stretch in the medium pore of drum stand, and two sidepieces can form and cover at drum stand two sides; One fixing circuit board, can insert and fix with two protruding interpolating units respectively for each secondary conducting strip, and can collect each secondary conducting strip formation voltage output end.

According to said structure, described drum stand outside is separately provided with an insulation clamshell.

According to said structure, described fixing circuit board can form mutual series connection and in parallel link for each secondary conducting strip.

According to said structure, on described drum stand, there is multi-conducting terminals, this multi-conducting terminals is except can be for being welded on default circuit board, and can be electrically connected at the voltage input end of aforementioned primary coil.

According to said structure, described drum stand is provided with at least one notch part on each separation trough.

A rectification circuit that is applicable to aforementioned transformer, it at least comprises: four are arranged on the switch module between input power and the voltage input end of aforementioned transformer with bridge-type bridging mode; Switch module between two voltage output ends that are arranged on transformer, and form ground connection between aforementioned two switch modules; One control circuit, can control respectively four switch modules of voltage input end and two switch modules of voltage output end of this transformer, makes its conducting or close respectively; Two Inductive components, are to be attached at respectively between the voltage output end of transformer with one end, and the other end of aforementioned two Inductive components connects to an output, for being linked to load.

According to said structure, the output that described two Inductive components connect to is separately provided with an electric capacity.

According to said structure, described control circuit is to be attached at the output that aforementioned two Inductive components connect.

Compare with conventional art, the beneficial effect that the present invention brings has:

Transformer device structure in the present invention utilizes secondary conducting strip to have the characteristic of larger sectional area and surface area, except increasing radiating efficiency, reduce whole volume, more can reduce whole processing procedure cost by cancelling the secondary coil of coiling form, and then the competitiveness of improving product; And in the present invention, be applicable to the rectification circuit of aforementioned transformer device structure, can reduce voltage transitions loss, promote overall efficiency.

For making above-mentioned purpose of the present invention, effect and feature can obtain Liao more specifically, separate, hereby according to following accompanying drawing, be described as follows:

accompanying drawing explanation:

Fig. 1 is the structure decomposition map of transformer in the present invention;

Fig. 2 is the part combination schematic diagram of transformer in the present invention;

Fig. 3 is transformer and the rectification circuit integrated circuit figure in the present invention;

Fig. 4 is that an integral body of transformer and rectification circuit in the present invention is with reference to outside drawing.

embodiment:

As shown in Figure 1 and Figure 2, transformer 1 structure of the present invention mainly comprises: the parts such as drum stand 11, primary coil 15, secondary conducting strip 12, E shape iron core 16, fixing circuit board 13, insulation clamshell 14, wherein, described drum stand 11 has a medium pore running through 111, entreat hereinto the outer circumferential side in hole 111 to be provided with most vertical separation troughs 112 at medium pore 111, and on each separation trough 112, be provided with at least one notch part 114, separately on aforementioned drum stand 11, be provided with multi-conducting terminals 113, each separation trough 112 that primary coil 15 is wrapped in aforementioned drum stand 11 by metal (copper) enamelled wire is formed, and the connection by each notch part 114, can make primary coil 15 be evenly distributed in each separation trough 112 inner bottom parts, and two ends that make described primary coil 15 can be attached at conducting terminal 113 and form voltage input end, simultaneously, described multi-conducting terminals 113 also can be for being welded on default circuit board, to be connected mutually with outside electronic building brick, most secondary conducting strips 12 are to be bent into and to be met at least part outer peripheral edges shape of drum stand by metal (copper) sheet, it can be contained in respectively in each separation trough 112 and be stacked on primary coil 15, two ends at each secondary conducting strip 12 are respectively equipped with a protruding interpolating unit 121, fixing circuit board 13 can insert fixing with two protruding interpolating units 121 respectively for each secondary conducting strip 12, and can collect each secondary conducting strip 12 formation series connection and link in parallel mutually, after linking, each secondary conducting strip 12 forms voltage output end, insulation clamshell 14 can cover and be combined in aforementioned drum stand 11 outsides, form an insulation isolation, on aforementioned dielectric clamshell 14, be provided with two through holes 141 corresponding to medium pore 111 2 ends, two E shape iron cores 16 have respectively a pars intermedia 161 and two other sidepieces 162 thereof, this pars intermedia 161 can stretch in the medium pore 111 of drum stand 11 by the through hole 141 of insulation clamshell 14, aforementioned two sidepieces 162 can form and cover at drum stand 11 2 sides, use in aforementioned drum stand 11 central authorities and all sides and form a magnetic conductive loop.

Above-mentioned transformer 1 structure, its secondary conducting strip 12 that utilizes metal (copper) sheet to be bent into has the characteristic of larger sectional area and surface area, except increasing radiating efficiency, reduce whole volume, more can reduce whole processing procedure cost by cancelling the secondary coil of coiling form, and then the competitiveness of improving product.

As shown in Fig. 3 ~ 4, the rectification circuit that the present invention is applicable to aforementioned transformer 1 mainly comprises: four switch module D1～D4, two switch module DX, DY, control circuit 2, two Inductive component L1, L2, wherein said four switch module D1～D4 are arranged between the voltage input end and input power Vin of primary coil 15 of described transformer 1 with bridge-type bridging mode, and two switch module DX, DY is arranged between the voltage output end of transformer 1, and at aforementioned two switch module DX, between DY, form ground connection, two Inductive component L1, L2 is attached at respectively between the voltage output end of transformer 1 with one end, and aforementioned two Inductive component L1, the other end of L2 connects to an output, described output can be according to need through a capacitor C o ground connection, be attached to again a load RL, control circuit 2 can be attached at aforementioned two Inductive component L1, the output of L2, and can control respectively aforementioned four switch module D1～D4, and two switch module DX, DY, make its conducting or close respectively.

Foregoing circuit is in when operation, is that switch module D1, D4 or D2, the D3 with diagonal side moves simultaneously (conducting or close) in switch module D1～D4 that bridge-type is connected, as switch module D1, during D4 conducting simultaneously, switch module D2, D3 closes simultaneously, the electric current of input power Vin is arrived the primary coil of transformer 1 through switch module D1 by positive terminal, by switch module D4, get back to again the negative pole of input power Vin, secondary conducting strip side at described transformer 1 makes switch module DY conducting, switch module DX closes, the electric current of secondary conducting strip side is flowed out by the secondary conducting strip of transformer 1, through Inductive component L1, capacitor C o output meets load RL, by ground connection, through switch module Y, get back to transformer 1 again, if and simultaneously conducting of switch module D2, D3, switch module D1, D4 close simultaneously, the electric current of input power Vin arrives primary coil by positive pole through switch module D3, by switch module D2, get back to again the negative pole of input power Vin, the secondary conducting strip side of transformer 1 makes that switch module DY closes, switch module DX conducting, the electric current of secondary conducting strip side is flowed out by the secondary conducting strip of transformer 1, through Inductive component L2, capacitor C o, output meets load RL, then through switch module DX, gets back to transformer 1 by ground, by above-mentioned two kinds of loop interworkings, to complete the function of power conversion.

Comprehensive the above, transformer device structure of the present invention and applicable rectification circuit thereof really can be reached increases radiating efficiency, reduce volume and processing procedure cost, and reduce the wastage, promote the effect of usefulness, and be the invention of a tool novelty and progressive in fact, the application of patent of invention is proposed in accordance with the law.

Claims

1. a transformer device structure, is characterized in that: at least comprise:

One drum stand, has a medium pore running through, and at the outer circumferential side of aforementioned medium pore, is provided with most separation troughs of vertically entreating hereinto hole;

One primary coil, is uniformly distributed each separation trough that is wrapped in aforementioned drum stand and is formed, and two ends of this primary coil forms voltage input ends by metal enamel conductor;

Most secondary conducting strips, are to be bent into and to be met at least part outer peripheral edges shape of drum stand by sheet metal, and can be contained in respectively in aforementioned each separation trough, at two ends of each secondary conducting strip, are respectively equipped with a protruding interpolating unit;

At least one E shape iron core, has a pars intermedia and two other sidepieces thereof, and this pars intermedia can stretch in the medium pore of drum stand, and aforementioned two sidepieces can form and cover at drum stand two sides;

One fixing circuit board, can insert and fix with two protruding interpolating units respectively for each secondary conducting strip, and can collect each secondary conducting strip formation voltage output end.

2. transformer device structure according to claim 1, is characterized in that: described drum stand outside is separately provided with an insulation clamshell.

3. transformer device structure according to claim 1, is characterized in that: described fixing circuit board can form mutual series connection and in parallel link for each secondary conducting strip.

4. transformer device structure according to claim 1, is characterized in that: on described drum stand, have multi-conducting terminals, this multi-conducting terminals is except can be for being welded on default circuit board, and can be electrically connected at the voltage input end of aforementioned primary coil.

5. transformer device structure according to claim 1, is characterized in that: described drum stand is provided with at least one notch part on each separation trough.

6. a rectification circuit that is useful in aforementioned transformer, is characterized in that: at least comprise:

Switch module between the voltage input end of four primary coils that are arranged on input power and aforementioned transformer with bridge-type bridging mode;

Switch module between two voltage output ends that are arranged on transformer, and form ground connection between this two switch module;

One control circuit, can control respectively four switch modules of voltage input end and two switch modules of voltage output end of aforementioned transformer, makes its conducting or close respectively;

Two Inductive components, are to be attached at respectively between the voltage output end of transformer with one end, and the other end of aforementioned two Inductive components connects to an output, for being linked to load.

7. a kind of rectification circuit that is useful in aforementioned transformer according to claim 6, is characterized in that: the output that described two Inductive components connect to is separately provided with an electric capacity.

8. a kind of rectification circuit that is useful in aforementioned transformer according to claim 6, is characterized in that: described control circuit is to be attached at the output that aforementioned two Inductive components connect.