CN209001849U

CN209001849U - A kind of high current rectification circuit using diodes in parallel module

Info

Publication number: CN209001849U
Application number: CN201822046310.3U
Authority: CN
Inventors: 赵红雁; 程培建; 杜吉飞
Original assignee: Suzhou Common Automatic Control Technology Co Ltd
Current assignee: Suzhou Common Automatic Control Technology Co Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2019-06-18
Anticipated expiration: 2028-12-07

Abstract

The utility model discloses a kind of high current rectification circuits using diodes in parallel module, using heavy-duty diode parallel module S1, S2, pass through anode conducting copper bus A1, the input terminal of A2 access transformer, rear class filtering circuit is linked into after summarizing electric current by cathode diversion copper bar B, absorbing circuit uses two pieces of lesser PCB circuit board P1, P2, weld absorption resistance R1, R2, Absorption Capacitance C1, after C2, with fastening screw S and anode conducting copper bus A1, A2, cathode diversion copper bar B is anchored on diodes in parallel module S1 together, on S2, finally by diodes in parallel module S1, S2 fastened by screw is on radiator S, anode conducting copper bus is connected with two anode terminals of diodes in parallel module, cathode diversion copper bar is connected with two diodes in parallel module yin.The utility model is capable of providing high current rectification demand, and equal mobility is good between two pipes, and topology layout is simple.

Description

A kind of high current rectification circuit using diodes in parallel module

Technical field

The utility model relates to a kind of high current rectification circuits using diode, especially a kind of to use diodes in parallel The high current rectification circuit of module.

Background technique

For phase whole-bridging circuit, with the increase to output power, to the diode capacity of secondary side rectification circuit It is required that increasing.Traditional way is to cope with high current demand, but this meeting using the mode of multiple diode single tube parallel connections Complicated wiring and structure problem are brought, and the equal mobility between two pipes has apparent difference since cabling is too long.For The existing rectification circuit using diodes in parallel module, the way generallyd use are in module and to fill PCB plate, pass through PCB The deposited copper face of plate meets the requirement of electric current high current, does so the area for not only increasing PCB, also adds pcb board and apply copper Thickness, while must guarantee that the RC of rectification circuit absorbs, but so again there is pcb board layout is difficult, pcb board cost phase To higher, while also because fever caused by flow conductivity is insufficient absorbs with RC and contradicts the problems such as causing discharge breakdown phenomenon.

Utility model content

Problem in view of the prior art, the utility model aim are to provide a kind of big electricity using diodes in parallel module Rectification circuit is flowed, water conservancy diversion is carried out using the conducting copper bus of thickening, not only can effectively solve the water conservancy diversion problem and RC of rectification circuit Absorption problem is also reduced into while reducing application space with the heating problem into also effective solution circuit board This.The technical solution adopted in the utility model is as follows: a kind of high current using diodes in parallel module of the utility model is whole Current circuit accesses the input terminal of transformer by anode conducting copper bus A1, A2 using heavy-duty diode parallel module S1, S2, It is linked into rear class filtering circuit after summarizing electric current by cathode diversion copper bar B, absorbing circuit uses two pieces of PCB circuit boards P1, P2, Absorption resistance R1, R2 are welded, after Absorption Capacitance C1, C2, with fastening screw S and anode conducting copper bus A1, A2, cathode diversion copper bar B is anchored on together in diodes in parallel module S1, S2, finally by diodes in parallel module S1, S2 fastened by screw in radiator Above S.Anode conducting copper bus is connected with two anode terminals of diodes in parallel module, and cathode diversion copper bar and two diodes are simultaneously Gang mould block yin is connected, and absorbing circuit plate is connected with diodes in parallel module, absorption resistance one end and diodes in parallel module Anode is connected, and one end is connected with Absorption Capacitance.The other end of Absorption Capacitance is connected with the cathode of diodes in parallel module.

As the utility model, preferably a kind of technical solution, the rectification circuit are used by phase-shifting full-bridge pair side.

As a kind of preferred technical solution of the utility model, the diodes in parallel module is inside it by two diodes Cathode is in parallel, and two diode anodes, which are drawn, needs parallel connection outside, S1 (S2) block of structure as shown in figure 1.

As the utility model, preferably a kind of technical solution, the absorbing circuit plate are only absorbing circuit wiring, cabling Width only absorbs power demand with offer RC.There is no large area cloth copper, absorption resistance and Absorption Capacitance tie point between two anodes It insulate with diodes in parallel module anode cathode.

The advantages of the utility model and good effect:

1. rectification circuit uses diodes in parallel module, it is capable of providing high current rectification demand, and between two pipes Mobility is good, and topology layout is simple.

2. rectification circuit uses conducting copper bus parallel way, water conservancy diversion loss, parallel function and absorption function phase point are reduced It opens.

3. rectification circuit uses absorbing circuit plate independent wiring mode, PCB layout width is reduced, is conducive to RC and absorbs cloth Line.

Detailed description of the invention

Fig. 1 is the rectification circuit schematic diagram of the utility model；

Fig. 2 is the rectifier circuit structure top view of the utility model；

Fig. 3 is the rectifier circuit structure front view of the utility model；

Fig. 4 is the rectifier circuit structure side view of the utility model；

Fig. 5 is the rectifier circuit structure isometric views of the utility model；

Fig. 6 is rectifier diode (S1, S2) wiring diagram of the utility model；

Fig. 7 is the utility model conducting copper bus A1, A2 dimensional drawing；

Fig. 8 is the utility model conducting copper bus B dimensional drawing.

Specific embodiment

As shown in Figure 1, being the rectification circuit schematic diagram of the utility model.For phase whole-bridging circuit, diode S1 is led to The J11 point for crossing input copper bar A1 is linked into leading-bridge rectification circuit, diode S2 is linked by the J21 point of copper bar A2 stagnant Bridge arm rectification circuit afterwards, two screw holes of I1, I2 that copper bar A1 is fixed on diode S1 with screw S is confined by the hole J12, J13 On, copper bar A2 is fixed on two screw holes of I1, I2 of diode S2 by the hole J22, J23 with screw S is confined, and is become for secondary side Depressor provides the rectification circuit in two channels.Every group of rectification circuit is composed in parallel by two diode D1, D2 (D3, D4), is provided big Current rectification demand.Each group of diode the end O and the end I1 by small-sized PCB parallel connection RC absorbing circuit (R1, C1 and R2, C2), voltage overshoot caused by absorption diode Reverse recovery.

When work, two groups of diode (S1, S2) alternate conductions, natural commutation, the current rectifications of different directions at identical The electric current in direction provides load output.When and diode turns off naturally, formed Reverse recovery due to voltage spikes when, Absorption Capacitance Start to inhibit spike, by spike energy storage to capacitor, then by the electric discharge to absorption resistance, consumes this part energy Amount, to form the absorption of Reverse recovery voltage.

It is the rectifier circuit structure view of the utility model as shown in Fig. 2,3,4,5.Rectification circuit includes two diodes Parallel module (S1, S2), two anode conducting copper bus (A1, A2), a cathode diversion copper bar (B), two blocks of absorbing circuit plates (P1, P2), two Absorption Capacitances (C1, C2), two absorption resistances (R1, R2).Wherein the rectification circuit of each bridge arm is individually considered as One group, include a diodes in parallel module S1 (S2), an anode water conservancy diversion copper bar A1 (A2), one piece of absorbing circuit plate P1 (P2), an absorption resistance R1 (R2), an Absorption Capacitance C1 (C2).

In a diodes in parallel module, two anode terminal I1, I2 pass through anode conducting copper bus A1 (A2) connection, cathode Terminal O is connected by cathode diversion copper bar B with the cathode terminal O of the diodes in parallel module in another group.

Absorption resistance R1 (R2) and Absorption Capacitance C1 (C2) is placed on absorbing circuit plate P1 (P2) by the way of welding, is inhaled It receives circuit board (P1) to be placed on the conducting copper bus B of anode A 1 (A2) and cathode, finally uses and confine screw S for copper bar A1 (A2), B It is fixed on diode (led) module S1 (S2) with P1 (P2), is finally fixed on diode S1 (S2) on radiator S with confinement screw Face is radiated to diode S1, S2.

It is the conducting copper bus dimensional structure figure of the utility model shown in 8 such as Fig. 7.This programme uses 5mm thickness copper sheet laser It cuts, the I1 and I2 of copper bar A1 and S1 are linked together by M5 screw S, and the I1 and I2 of copper bar A2 and S2 pass through M5 spiral shell Silk S links together, A1, and A2 width is 23.61mm, and water conservancy diversion area is 23.61*5=118.05mm², 3A is walked by every square meter Electric current calculates, input terminal current-carrying capacity 354A electric current.B connects the end O of S1 and the end O of S2 respectively, the part design that B is connected with the end O Broadband is 22mm, and total output end is 30mm, and thickness is similarly 5mm, and the water conservancy diversion area of total output end is 30*3=150mm², by every Square meter walks the calculating of 3A electric current, and up to 450A electric current, the current-carrying capacity than being designed with PCB plate significantly increases the current-carrying capacity of total output end Many, and only need to replace original large area pcb board with two pieces of opposite pcb boards, the deposited copper thickness requirement to pcb board Also it reduces very much.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims

1. a kind of high current rectification circuit using diodes in parallel module, it is characterised in that: in parallel using heavy-duty diode Module S1, S2 accesses the input terminal of transformer by anode conducting copper bus A1, A2, after summarizing electric current by cathode diversion copper bar B It is linked into rear class filtering circuit, absorbing circuit uses two pieces of PCB circuit boards P1, P2, welds absorption resistance R1, R2, Absorption Capacitance After C1, C2, diodes in parallel module is anchored on together with anode conducting copper bus A1, A2, cathode diversion copper bar B with fastening screw S On S1, S2, finally by diodes in parallel module S1, S2 fastened by screw on radiator S, anode conducting copper bus and diode Two anode terminals of parallel module are connected, and cathode diversion copper bar is connected with two diodes in parallel module yin, absorbing circuit plate It is connected with diodes in parallel module, absorption resistance one end is connected with diodes in parallel module anode, one end and Absorption Capacitance It is connected.

2. a kind of high current rectification circuit using diodes in parallel module according to claim 1, the absorption resistance The other end is connected with the cathode of diodes in parallel module.

3. a kind of high current rectification circuit using diodes in parallel module according to claim 1, the rectification circuit It is used by phase-shifting full-bridge pair side.

4. a kind of high current rectification circuit using diodes in parallel module according to claim 1, the diode is simultaneously For gang mould block inside it by the parallel connection of two diode cathodes, two diode anodes, which are drawn, needs parallel connection outside.

5. a kind of high current rectification circuit using diodes in parallel module according to claim 1, the absorbing circuit Plate is only absorbing circuit wiring, and trace width only absorbs power demand with providing RC, absorption resistance and Absorption Capacitance tie point with Diodes in parallel module anode cathode insulate.