CN105489344A

CN105489344A - Pulse transformer and manufacturing method thereof

Info

Publication number: CN105489344A
Application number: CN201610052675.XA
Authority: CN
Inventors: 刘金南; 黄敬新; 陈苗
Original assignee: Shenzhen Sunlord Electronics Co Ltd
Current assignee: Shenzhen Sunlord Electronics Co Ltd
Priority date: 2016-01-26
Filing date: 2016-01-26
Publication date: 2016-04-13
Anticipated expiration: 2036-01-26
Also published as: CN105489344B

Abstract

A pulse transformer comprises a first core body, wherein the first core body is provided with a plurality of electrodes, multiple winding wires wind around the first core body and are connected with corresponding electrodes to form multiple windings, the multiple windings are in corresponding wiring connection with PCB (printed circuit board) welding plates, and accordingly, the characteristics of a transformer product are obtained due to combination with the PCB welding plates; one part of the multiple windings are connected with the corresponding PCB welding plates to form primary windings, and the other part of the multiple windings are connected with the corresponding PCB welding plates to form secondary windings. The invention further discloses a corresponding manufacturing method of the pulse transformer. The pulse transformer is simple to manufacture and has remarkable advantages of avoidance of lead crossing and prevention of poor voltage resistance.

Description

Pulse transformer and manufacture method thereof

Technical field

The present invention relates to a kind of pulse transformer and manufacture method thereof, particularly a kind of employing PCB (PrintedCircuitBoard) is connected up the surface installing type pulse transformer of practical function.

Background technology

Along with growing with each passing day of the network coverage, start the terminal equipment innovation tide that Internet technology leads gradually.Pulse transformer (Pulsetransformer), is also called network isolation transformer, or data mercury, as the critical component of network interface, is thus widely used in the equipment such as the network switch, router, network interface card, hub.Between transponder chip and network interface, pulse transformer mainly plays the effects such as signal coupling, high_voltage isolation, impedance matching, electromagnetic interference suppression.

At present, traditional pulse transformer has the feature of low magnetism leakage, high coupling, high signal bandwidth, but because traditional pulse transformer often adopts magnet ring as mold core body, itself closed structure greatly limit its automation process, and it is miniaturized, lightening that product size is also difficult to realization.Novel surface-mounted pulse transformer then adopts automatic winding manufacture technics, while realizing automation, also there is physical dimension compact, the feature that coupling is higher, but because spiral mode is complicated, and during hanging wire, there is lead-in wire crossover phenomenon, there is the bad risk of higher voltage endurance in product.

Therefore, how to improve the structure of Novel pulse transformer, make it manufacture more simple, there is better electrical property, reduce further lead-in wire intersect and cause short circuit, withstand voltage bad risk is those skilled in the art's technical problems urgently to be resolved hurrily.

Patent documentation: publication number US2010109827A1

Patent documentation: publication number CN201410498079.5

Summary of the invention

Main purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of and manufactures simple, reliability is strong pulse transformer and preparation method thereof.

For achieving the above object, the present invention is by the following technical solutions:

A kind of pulse transformer, comprise the first mold core body, described first mold core body has several electrodes, some coilings coiling around described first mold core body, and form multiple winding with corresponding Electrode connection, described multiple winding carries out corresponding wiring to corresponding PCB pad respectively and connects, and by the combination with PCB pad, thus has the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

Further:

Described first mold core body has the first boss, second boss and center pillar, described coiling is wrapped on described center pillar, a part of electrode in several electrodes described is arranged on described first boss, another part electrode in several electrodes described is arranged on described second boss, each electrode on described first boss is connected with the electrode on described second boss correspondingly by a coiling, described coiling is after the electrode extraction described first boss, reel from the first side of described center pillar, terminate to reel from second side relative with described first side of described center pillar again, then the electrode on described second boss is connected to.

Described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 7th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 8th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 5th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 6th Electrode connection; Wherein said first electrode, described 8th electrode are as the input of described pulse transformer, described 4th electrode, described 5th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 8th electrode are as the output of described pulse transformer, and described 4th electrode, the 5th electrode are as the input of described pulse transformer.

Described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 8th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 7th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 6th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 5th Electrode connection; Wherein said first electrode, described 7th electrode are as the input of described pulse transformer, described third electrode, described 5th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 7th electrode are as the output of described pulse transformer, and described third electrode, the 5th electrode are as the input of described pulse transformer.

Described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 6th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 5th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 8th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 7th Electrode connection; Wherein said first electrode, described 5th electrode are as the input of described pulse transformer, described 4th electrode, described 8th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 5th electrode are as the output of described pulse transformer, and described 4th electrode, the 8th electrode are as the input of described pulse transformer.

Described first coiling, described second coiling, described 3rd coiling and described 4th coiling turn to four layers on described center pillar; Or described first coiling and described 3rd coiling are one group and described second coiling and described 4th coiling are another group, and two groups of coilings turn to bilayer on described center pillar; Or described first coiling and described second coiling are one group and described 3rd coiling and described 4th coiling are another group, and two groups of coilings turn to bilayer on described center pillar.

Described pulse transformer also comprises the second mold core body, the material of described second mold core body is permeability magnetic material, described second mold core body is arranged on the reverse side being arranged on the side on PCB of the first mold core body, coordinates and form closed magnetic circuit with the first mold core body; Preferably, described first mold core body of described pulse transformer comprises main part and plate portion, described some coiling coilings on the body portion, described main part is installed on PCB by described plate portion, described plate portion has the electrode be electrically connected with the electrode one_to_one corresponding of described main part, the electrode on described plate portion and PCB pad connect one to one.

First mold core body and the second mold core body contain permeability magnetic material, are preferably Ferrite Material, are more preferably nickel-zinc-ferrite material; Preferably, the first mold core body is the combined material of permeability magnetic material and ceramic material, plastics or composite material.

A kind of manufacture method of pulse transformer, according to the pulse transformer that the structure of described pulse transformer is formed in conjunction with PCB layout, wherein, some coilings are carried out coiling around described first mold core body, and the electrode corresponding with in described first mold core body connects, and forms multiple winding, described multiple winding carries out corresponding wiring to corresponding PCB pad respectively and connects, by the combination with PCB pad, thus there is the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

When making described pulse transformer, described first coiling, described second coiling, described 3rd coiling and described 4th coiling divide and on described center pillar, turn to four layers four times; Or described first coiling and described 3rd coiling are one group and described second coiling and described 4th coiling are another group, two groups of coilings turn to bilayer at twice or simultaneously on described center pillar; Or described first coiling and described second coiling are one group and described 3rd coiling and described 4th coiling are another group, two groups of coilings turn to bilayer at twice or simultaneously on described center pillar.

Beneficial effect of the present invention:

A kind of pulse transformer provided by the invention and manufacture method thereof, its winding mode is simple, and utilizes PCB layout to be combined with coiling product to make it have transformer characteristic, reduces the short circuit brought because of the intersection that goes between in prior art, withstand voltage bad equivalent risk.Hinge structure, pulse transformer of the present invention manufactures more simple, and is avoiding lead-in wire to intersect, and prevents the withstand voltage aspect such as bad to have significant advantage.

Accompanying drawing explanation

Fig. 1-1 is the structural representation before the non-coiling of pulse transformer of an embodiment of the present invention;

Fig. 1-2 is the structural representation before the non-coiling of pulse transformer of the another kind of embodiment of the present invention;

Fig. 1-3 is plate portion front surface A schematic diagrames of pulse transformer first core body of the another kind of embodiment of the present invention;

Fig. 1-4 is plate portion back surface B schematic diagrames of the pulse transformer first core part of the another kind of embodiment of the present invention;

Fig. 2-1 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 1;

In Fig. 2-2 embodiment 1 pulse transformer manufacture method in one of them step schematic diagram;

Fig. 2-3 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 1;

Fig. 2-4 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 1;

Fig. 2-5 is schematic diagrames of the pulse transformer of embodiment 1;

Fig. 2-6 is pad layout schematic diagrames of pulse transformer in embodiment 1;

Fig. 2-7 is equivalent circuit diagrams of pulse transformer in embodiment 1;

Fig. 2-8 is one of them the step schematic diagram in another manufacture method of pulse transformer in embodiment 1;

Fig. 2-9 is one of them the step schematic diagram in another manufacture method of pulse transformer in embodiment 1;

Fig. 3-1 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 2;

Fig. 3-2 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 2;

Fig. 3-3 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 2;

Fig. 3-4 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 2;

Fig. 3-5 is schematic diagrames of pulse transformer in embodiment 2;

Fig. 3-6 is pad layout schematic diagrames of pulse transformer in embodiment 2;

Fig. 3-7 is equivalent circuit diagrams of pulse transformer in embodiment 2;

Fig. 4-1 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 3;

Fig. 4-2 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 3;

Fig. 4-3 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 3;

Fig. 4-4 is one of them the step schematic diagram in the manufacture method of pulse transformer in embodiment 3;

Fig. 4-5 is schematic diagrames of the pulse transformer of embodiment 3;

Fig. 4-6 is pad layout schematic diagrames of the pulse transformer of embodiment 3;

Fig. 4-7 is equivalent circuit diagrams of the pulse transformer of embodiment 3.

Embodiment

Below embodiments of the present invention are elaborated.It is emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.

Consult Fig. 1-1 to Fig. 4-7, in one embodiment, a kind of pulse transformer, comprise the first mold core body B1, first mold core body B1 has several electrodes E1 ~ E8, some coiling S1 ~ S4 are around the first mold core body B1 coiling, and form multiple winding with corresponding Electrode connection, multiple winding carries out corresponding wiring to PCB pad 1 ~ 8 respectively and connects, wherein each electrode E1 ~ E8 correspondence is connected on each PCB pad 1 ~ 8, by the combination with PCB pad, thus there is the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

Consult Fig. 1-1 to Fig. 4-7, in a preferred embodiment, first mold core body B1 has the first boss a, second boss b and center pillar c, coiling S1 ~ S4 is wrapped on center pillar c, a part of electrode E1 ~ E4 in several electrodes E1 ~ E8 is arranged on the first boss a, another part electrode E5 ~ E8 in several electrodes is arranged on the second boss b, each electrode E1 ~ E4 on first boss a is connected with the electrode E5 ~ E8 on the second boss b correspondingly by a coiling S1 ~ S4, coiling S1 ~ S4 is after the electrode E1 ~ E4 extraction the first boss a, reel from the first side c1 of center pillar c, terminate to reel from the second side c2 relative with the first side c1 of center pillar c again, then the electrode E5 ~ E8 on the second boss b is connected to.

Consult Fig. 2-1 to Fig. 2-9, in the preferred embodiment of one, first boss a have the first electrode E1, the second electrode E2, third electrode E3 and the 4th electrode E4, second boss b have the 5th electrode E5, the 6th electrode E6, the 7th electrode E7 and the 8th electrode E8, wherein, the first electrode E1 and the 8th electrode E8 is oppositely arranged, and the second electrode E2 and the 7th electrode E7 is oppositely arranged, third electrode E3 and the 6th electrode E6 is oppositely arranged, and the 4th electrode E4 and the 5th electrode E5 is oppositely arranged; Wherein coiling comprises the first coiling S1, the second coiling S2, the 3rd coiling S3 and the 4th coiling S4, wherein the top S1a of the first coiling S1 is connected with the first electrode E1, the 7th electrode E7 respectively with end S1b, the top S2a of the second coiling S2 is connected with the second electrode E2, the 8th electrode E8 respectively with end S2b, the top S3a of the 3rd coiling S3 is connected with third electrode E3, the 5th electrode E5 respectively with end S3b, and the top S4a of the 4th coiling S4 is connected with the 4th electrode E4, the 6th electrode E6 respectively with end S4b; Wherein the first electrode E1, the 8th electrode E8 are as the input of pulse transformer, 4th electrode E4, the 5th electrode E5 are as the output of pulse transformer, or, wherein the first electrode E1, the 8th electrode E8 are as the output of pulse transformer, and the 4th electrode E4, the 5th electrode E5 are as the input of pulse transformer.

Consult Fig. 3-1 to Fig. 3-7, in the preferred embodiment of another kind, be with front a kind of embodiment difference, wherein the top S1a of the first coiling S1 is connected with the first electrode E1, the 8th electrode E8 respectively with end S1b, the top S2a of the second coiling S2 is connected with the second electrode E2, the 7th electrode E7 respectively with end S2b, the top S3a of the 3rd coiling S3 is connected with third electrode E3, the 6th electrode E6 respectively with end S3b, and the top S4a of the 4th coiling S4 is connected with the 4th electrode E4, the 5th electrode E5 respectively with end S4b; Wherein the first electrode E1, the 7th electrode E7 are as the input of pulse transformer, third electrode E3, the 5th electrode E5 are as the output of pulse transformer, or, wherein the first electrode E1, the 7th electrode E7 are as the output of pulse transformer, and third electrode E3, the 5th electrode E5 are as the input of pulse transformer.

Consult Fig. 4-1 to Fig. 4-7, in the preferred embodiment of another kind, be with front a kind of embodiment difference, wherein the top S1a of the first coiling S1 is connected with the first electrode E1, the 6th electrode E6 respectively with end S1b, the top S2a of the second coiling S2 is connected with the second electrode E2, the 5th electrode E5 respectively with end S2b, the top S3a of the 3rd coiling S3 is connected with third electrode E3, the 8th electrode E8 respectively with end S3b, and the top S4a of the 4th coiling S4 is connected with the 4th electrode E4, the 7th electrode E7 respectively with end S4b; Wherein the first electrode E1, the 5th electrode E5 are as the input of pulse transformer, 4th electrode E4, the 8th electrode E8 are as the output of pulse transformer, or, wherein the first electrode E1, the 5th electrode E5 are as the output of pulse transformer, and the 4th electrode E4, the 8th electrode E8 are as the input of pulse transformer.

In a preferred embodiment, the first coiling S1, the second coiling S2, the 3rd coiling S3 and the 4th coiling S4 turn to four layers on center pillar c; Or as shown in Fig. 2-1 to Fig. 3-5, the first coiling S1 and the 3rd coiling S3 is one group and the second coiling S2 and the 4th coiling S4 is another group, and two groups of coilings turn to bilayer on center pillar c; Or as shown in Fig. 4-1 to Fig. 4-5, the first coiling S1 and the second coiling S2 is one group and the 3rd coiling S3 and the 4th coiling S4 is another group, and two groups of coilings turn to bilayer on center pillar c.

As shown in Figure 1-2, pulse transformer also comprises the second mold core body B2, and the material of the second mold core body B2 is made up of permeability magnetic material, and it adopts cover plate form, be arranged on the reverse side being arranged on the side on PCB of the first mold core body B1, coordinate with the first mold core body B1 and form closed magnetic circuit.

As shown in Fig. 1-2 to Fig. 1-4, in a preferred embodiment, first mold core body B1 of pulse transformer comprises main part B1 (a) and plate portion B1 (b), main part B1 (a) has the first boss a, the second boss b and center pillar c, main part B1 (a) is installed on PCB by plate portion B1 (b), plate portion B1 (b) has the electrode E1' ~ E8' be electrically connected with electrode E1 ~ E8 one_to_one corresponding of main part B1 (a), the electrode E1' on plate portion B1 (b) ~ E8' and PCB pad 1 ~ 8 correspondence connects.

First mold core body B1 and the second mold core body B2 contains permeability magnetic material, and permeability magnetic material is such as Ferrite Material, is more preferably nickel-zinc-ferrite material.In addition, the first mold core body B1 also can be the combined material of permeability magnetic material and ceramic material, plastics or composite material.

A kind of manufacture method of pulse transformer, according to the pulse transformer that the structure of the pulse transformer of any one embodiment above-mentioned is formed in conjunction with PCB layout, wherein, some coilings are carried out coiling around the first mold core body B1, and the electrode corresponding with on the first mold core body B1 connects, and forms multiple winding, multiple winding carries out corresponding wiring to corresponding PCB pad respectively and connects, by the combination with PCB pad, thus there is the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

Consult Fig. 1-1 to Fig. 4-7, in this manufacture method preferred embodiment, when making the pulse transformer of above-described embodiment, the first coiling S1, the second coiling S2, the 3rd coiling S3 and the 4th coiling S4 divide and on center pillar c, turn to four layers four times; Or as shown in Fig. 2-1 to Fig. 3-5, the first coiling S1 and the 3rd coiling S3 is one group and the second coiling S2 and the 4th coiling S4 is another group, two groups of coilings turn to bilayer at twice or simultaneously on center pillar c; Or as shown in Fig. 4-1 to Fig. 4-5, the first coiling S1 and the second coiling S2 is one group and the 3rd coiling S3 and the 4th coiling S4 is another group, and two groups of coilings turn to bilayer at twice on center pillar c.

According to the above embodiments, the pulse transformer that one is formed in conjunction with PCB (PrintedCircuitBoard) wiring is provided, this pulse transformer can comprise at least two mold core body and be wrapped in the some coilings in the first mold core body, between each mold core body by glue bonding thus formed closed magnetic circuit.Some coilings carry out coiling around the first mold core body, and the electrode corresponding with it connects.Some coilings are divided into multiple winding, and in multiple winding, choose specific winding respectively it is carried out corresponding wiring to corresponding PCB pad connect, coiling product, by the combination with PCB pad, make it have the characteristic of power transformer product.

Some coilings can be divided into multiple winding, and the winding mode being configured to multiple winding can be combined the electrical characteristic forming transformer with the PCB connected up.The electrode position that PCB layout can be connected with end according to the top of some coilings determines.In multiple winding, choose a part of winding, the PCB pad of its correspondence is connected with it, by forming armature winding with the combination of PCB; Choosing another part winding, and the PCB pad of its correspondence is connected with it, by forming secondary winding with the combination of PCB, eventually through the combination of coiling product and PCB pad, making it have transformer characteristic.

Wherein, the first mold core body can form for permeability magnetic material, and it includes but not limited to: Ferrite Material; Also can form for permeability magnetic material and the combination of materials with high strength or high tenacity, this material with high strength or high tenacity includes but not limited to: ceramic material, plastics or composite material.

In one embodiment, the first mold core body B1 and the second mold core body B2 forms by magnetic material such as ferrites, preferably nickel-zinc-ferrite material.

As shown in Figure 1-2, the pulse transformer formed in conjunction with PCB layout involved by another kind of embodiment, comprise: the second mold core body B2 of the first mold core body B1 and cover plate form, second mold core body B2 is arranged on the reverse side being arranged on the side on PCB of the first mold core body B1, coordinates and form closed magnetic circuit with the first mold core body B1.

As shown in Fig. 1-2 to Fig. 1-4, preferably, first mold core body B1 comprises main part B1 (a) and plate portion B1 (b), plate portion B1 (b) has and the electrode E1' ~ E8' one to one of the electrode E1 ~ E8 in the first mold core body main part B1 (a), main part B1 (a) is installed on PCB by plate portion B1 (b).

In another kind of embodiment, the main part B1 (a) in the first mold core body B1 is made up of permeability magnetic material, preferably nickel-zinc-ferrite material; Plate portion B1 (b) in first mold core body B1 can be made up of the material such as high strength or high tenacity, preferably ceramic material.

embodiment 1

A kind of pulse transformer formed in conjunction with PCB layout

On the first core body B1, coiling S1 top S1a and end S1b are connected with the first electrode E1, the 7th electrode E7 respectively, coiling S2 top S2a and end S2b are connected with the second electrode E2, the 8th electrode E8 respectively, coiling S3 top S3a and end S3b are connected with third electrode E3, the 5th electrode E5 respectively, and coiling S4 top S4a and end S4b are connected with the 4th electrode E4, the 6th electrode E6 respectively.

Wherein, coiling S1 and S3 reels from the first side c1 of the center pillar c of the first core body B1, and terminates winding from the second side c2 of center pillar c.Coiling S2 and S4, reels from the first side c1 of center pillar c, and terminates winding from the second side c2 of center pillar c.

Coiling S1 ~ S4 is wound on center pillar c along second direction, second direction for counterclockwise (from viewed from electrode E8 to E1).

As shown in figures 2-6, the PCB layout that the present embodiment is corresponding is: pad 2 is electrically connected with pad 7, and pad 3 is electrically connected with pad 6.

Wherein, can using the first electrode E1 of pulse transformer, the 8th electrode E8 as input (output) end, the 4th electrode E4, the 5th electrode E5 are as output (input) end.

Fig. 2-7 is the equivalent circuit diagram of the pulse transformer of the present embodiment 1.

A kind of embodiment of manufacture method of the pulse transformer in conjunction with PCB layout formation

Coiling S1, S3 and coiling S2, S4 can be divided into four times four layers carry out coiling, twice bilayer carries out coiling, and simultaneously bilayer also can be divided into carry out coiling.

Preferably, the while of two groups, bilayer carries out coiling, and its step is as follows:

Step 1, as shown in Fig. 2-1, first coiling S1, S2, S3, S4 is prepared, and be each passed through First Line mouth N1, the second line mouth N2, the 3rd line mouth N3, the 4th line mouth N4, First Line mouth N1 connects into an entirety by connecting rod and the 3rd line mouth N3, and the second line mouth N2 connects into an entirety by connecting rod and the 4th line mouth N4.Then, coiling S1, S2, S3, S4 are respectively fixed on the first electrode E1, the second electrode E2, third electrode E3 and the 4th electrode E4 by fixture M1, M2, M3, M4 simultaneously.

Step 2, as shown in Fig. 2-2, utilizes thermal compression welding fixture, top S1a, S2a, S3a, S4a of coiling S1, S2, S3, S4 is connected with the first electrode E1, the second electrode E2, third electrode E3, the 4th electrode E4 respectively.Then, First Line mouth N1 and the 3rd line mouth N3 is towards after the first c1 direction, side rotates to an angle, move to the 7th electrode E7 and the 5th electrode E5 direction, almost synchronous therewith, second line mouth N2 and the 4th line mouth N4 rotates to an angle followed by towards near the first c1 direction, side, moves to the 8th electrode E8 and the 6th electrode E6 direction.

Step 3, by center pillar c along first direction (from viewed from electrode E8 to E1, first direction is clockwise) rotation, coiling S1 and coiling S3 is made to carry out coiling counterclockwise along the first side c1 of center pillar c, almost synchronous therewith, the first side c1 of coiling S2 and coiling S4 on coiling S1 and coiling S3 upper strata along center pillar c carries out coiling counterclockwise, forms double-deck winding structure as in Figure 2-4.

Step 4, when coiling S1, S3 are after the regulation number of turns, First Line mouth N1 and the 3rd line mouth N3 moves near the 7th electrode E7 and the 5th electrode E5 thereupon.

Step 5, as Figure 2-3, First Line mouth N1 and the 3rd line mouth N3 is reduced into original angle by rotation; When coiling S2, S4 are after the regulation number of turns, center pillar c stops operating, and the second line mouth N2 and the 4th line mouth N4 moves near the 8th electrode E8 and the 6th electrode E6 thereupon, and the second line mouth N2 and the 4th line mouth N4 is also reduced into original angle by rotation.Utilize thermal compression welding fixture, be connected to by the end S1b of coiling S1 on the 7th electrode E7, the end S3b of coiling S3 is connected on the 5th electrode E5, and the end S2b of coiling S2 is connected on the 8th electrode E8, and the end S4b of coiling S4 is connected on the 6th electrode E6.

Fig. 2-5 is the schematic diagram of pulse transformer.

Another preferably, when two groups of twice double-deck coilings, first the top of coiling S1 and S3 is connected respectively on S1a and S3a, then by the rotation of center pillar c along first direction, coiling S1 and coiling S3 is made to carry out coiling counterclockwise along the first side c1 of center pillar c, then end S1b and S3b of coiling S1 and S3 is connected respectively on the 7th electrode E7 and the 5th electrode E5, completes ground floor coiling, as illustrated in figs. 2 through 8.Next the top of coiling S2, S4 is connected respectively on S2a and S4a, then its first side c1 along center pillar c is made to carry out coiling counterclockwise in the same way, finally end S2b and S4b of coiling S2 and S4 is connected respectively on the 8th electrode E8 and the 6th electrode E6, as shown in figs. 2-9, the final coiling product formed are consistent with Fig. 2-5.

In embodiment 1, compared to two groups of twice double-deck coilings or four four layers of winding methods, the while of two groups, the manufacture method of double-deck coiling pulse transformer carries out coiling by disposable, greatly reduces the coiling cycle, improves production efficiency.

embodiment 2

A kind of pulse transformer formed in conjunction with PCB layout

In the first core body, coiling S1 top S1a and end S1b are connected with the first electrode E1, the 8th electrode E8 respectively, coiling S2 top S2a and end S2b are connected with the second electrode E2, the 7th electrode E7 respectively, coiling S3 top S3a and end S3b are connected with third electrode E3, the 6th electrode E6 respectively, and coiling S4 top S4a and end S4b are connected with the 4th electrode E4, the 5th electrode E5 respectively.

Coiling S1 and S3 reels from the first side c1 of center pillar c, and terminates winding from the second side c2 of center pillar c.Coiling S2 and S4 reels from the first side c1 of center pillar c, and terminates winding from the second side c2 of center pillar c.

Coiling S1, S2, S3 and S4 are wound on center pillar c along second direction, second direction be counterclockwise (from viewed from electrode E8 to E1).

As seen in figures 3-6, the PCB layout that the present embodiment is corresponding is: pad 2 is electrically connected with pad 8, and pad 4 is electrically connected with pad 6.

Can using the first electrode E1 of pulse transformer, the 7th electrode E7 as input (output) end, third electrode E3, the 5th electrode E5 are as output (input) end.

Fig. 3-7 is the equivalent circuit diagram of the pulse transformer of the present embodiment 2.

Coiling S1, S3 and coiling S2, S4 can be divided into two components, twice bilayer to carry out coiling, also can divide four times four layers carry out coiling.

Preferably, during two component twice double-deck coilings, its step is as follows:

Step 1, first prepares coiling S1, S3, and is each passed through First Line mouth N1, the second line mouth N2.Then, coiling S1, S3 are respectively fixed on the first electrode E1, third electrode E3 by fixture M1, M2.Then, First Line mouth N1 moves towards the 8th electrode E8 direction, and the second line mouth N2 moves towards the 6th electrode E6 direction.

Step 2, as shown in figure 3-1, utilizes thermal compression welding fixture, is connected by the top S1a of coiling S1 with the first electrode E1, and the top S3a of coiling S3 is connected with the 3rd pole electrode E3.

Step 3, by center pillar c along first direction (from viewed from electrode E8 to E1, first direction is clockwise) rotation, make coiling S1 and coiling S3 carry out coiling counterclockwise along the first side c1 of center pillar c.

Step 4, when coiling S1, S3 are after the regulation number of turns, center pillar c stops operating, and First Line mouth N1 and the second line mouth N2 moves near the 8th electrode E8 and the 6th electrode E6 thereupon.

Step 5, as shown in figure 3-2, utilizes thermal compression welding fixture, is connected to by the end S1b of coiling S1 on the 8th electrode E8, and the end S3b of coiling S3 is connected on the 6th electrode E6.

Step 6, by coiling S2 and S4, according to the mode identical with step 1, completes the fixing of coiling S2 and S4 and location.

Step 7, as shown in Fig. 3-3, utilizes thermal compression welding fixture, according to the mode identical with step 2, completes the top S4a of top S2a and S4 of coiling S2 and the connection of the second electrode E2 and the 4th electrode E4.

Step 8, according to the mode identical with step 3, completes coiling S2 and coiling S4 along the counterclockwise coiling of the first side c1 of center pillar c.

Step 9, according to the mode identical with step 4, moves to corresponding line mouth near the 7th electrode E7 and the 5th electrode E5 thereupon.

Step 10, as shown in Figure 3-4, utilizes thermal compression welding fixture, and according to the mode identical with step 5, make the end S2b of coiling S2 be connected on the 7th electrode E7, the end S4b of coiling S4 is connected on the 5th electrode E5.

Fig. 3-5 is the schematic diagram of pulse transformer.

embodiment 3

A kind of pulse transformer formed in conjunction with PCB layout

In the first core body, coiling S1 top S1a and end S1b are connected with the first electrode E1, the 6th electrode E6 respectively, coiling S2 top S2a and end S2b are connected with the second electrode E2, the 5th electrode E5 respectively, coiling S3 top S3a and end S3b are connected with third electrode E3, the 8th electrode E8 respectively, and coiling S4 top S4a and end S4b are connected with the 4th electrode E4, the 7th electrode E7 respectively.

Coiling S1 and S2 reels from the first side c1 of center pillar c, and terminates winding from the second side c2 of center pillar c.Coiling S3 and S4, reels from the second side c2 of center pillar c, and terminates winding from the first side c1 of center pillar c.

Coiling S1 and S2 is wound on center pillar c along second direction, and coiling S3 and S4 is wound on center pillar c along first direction, and first direction is clockwise direction, second direction for counterclockwise (from viewed from electrode E8 to E1).

As Figure 4-Figure 6, the PCB that the present embodiment is corresponding is doubling plate, and ground floor is A layer, and the second layer is B layer, and in A layer, pad 2 is electrically connected with pad 6; In B layer, pad 3 is electrically connected with pad 7.

Can using the first electrode E1 of pulse transformer, the 5th electrode E5 as input (output) end, the 4th electrode E4, the 8th electrode E8 are as output (input) end.

Fig. 4-7 is the equivalent circuit diagram of the pulse transformer of the present embodiment 3.

Coiling S1, S2 and coiling S3, S4 can be divided into two components, twice bilayer to carry out coiling, also can divide four times four layers carry out coiling.

Step 1, according to the mode identical with embodiment 2 step 1, completes the fixing of coiling S1 and S2 and location.

Step 2, as shown in Fig. 4-1, utilizes thermal compression welding fixture, according to the mode identical with embodiment 2 step 2, is connected by the top S1a of coiling S1 with the first electrode E1, and the top S2a of coiling S2 is connected with the second electrode E2.

Step 3, according to the mode identical with embodiment 2 step 3, makes coiling S1 and coiling S2 carry out coiling counterclockwise along the first side c1 of center pillar c.

Step 4, according to the mode identical with embodiment 2 step 4, makes First Line mouth N1 and the second line mouth N2 move near the 6th electrode E6 and the 5th electrode E5 thereupon.

Step 5, as shown in the Fig. 4-2, utilizes thermal compression welding fixture, and according to the mode identical with embodiment 2 step 5, be connected to by the end S1b of coiling S1 on the 6th electrode E6, the end S2b of coiling S2 is connected on the 5th electrode E5.

Step 6, by coiling S3 and S4, according to the mode identical with step 1, completes the fixing of coiling S3 and S4 and location.

Step 7, as shown in Fig. 4-3, utilizes thermal compression welding fixture, according to the mode identical with step 2, completes the top S4a of top S3a and S4 of coiling S3 and the connection of third electrode E3 and the 4th electrode E4.

Step 8, according to the mode identical with step 3, completes the second side c2 clockwise coiling of coiling S3 and coiling S4 along center pillar c.

Step 9, according to the mode identical with step 4, moves to corresponding line mouth near the 8th electrode E8 and the 7th electrode E7 thereupon.

Step 10, as shown in Fig. 4-4, utilizes thermal compression welding fixture, and according to the mode identical with step 5, make the end S3b of coiling S3 be connected on the 8th electrode E8, the end S4b of coiling S4 is connected on the 7th electrode E7.

Fig. 4-5 is the schematic diagram of pulse transformer.

Above content combines concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its execution mode that can also describe these makes some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.

Claims

1. a pulse transformer, it is characterized in that, comprise the first mold core body, described first mold core body has several electrodes, some coilings coiling around described first mold core body, and form multiple winding with corresponding Electrode connection, described multiple winding carries out corresponding wiring to corresponding PCB pad respectively and connects, by the combination with PCB pad, thus there is the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

2. pulse transformer as claimed in claim 1, it is characterized in that, described first mold core body has the first boss, second boss and center pillar, described coiling is wrapped on described center pillar, a part of electrode in several electrodes described is arranged on described first boss, another part electrode in several electrodes described is arranged on described second boss, each electrode on described first boss is connected with the electrode on described second boss correspondingly by a coiling, described coiling is after the electrode extraction described first boss, reel from the first side of described center pillar, terminate to reel from second side relative with described first side of described center pillar again, then the electrode on described second boss is connected to.

3. pulse transformer as claimed in claim 2, it is characterized in that, described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 7th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 8th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 5th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 6th Electrode connection; Wherein said first electrode, described 8th electrode are as the input of described pulse transformer, described 4th electrode, described 5th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 8th electrode are as the output of described pulse transformer, and described 4th electrode, the 5th electrode are as the input of described pulse transformer.

4. pulse transformer as claimed in claim 2, it is characterized in that, described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 8th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 7th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 6th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 5th Electrode connection; Wherein said first electrode, described 7th electrode are as the input of described pulse transformer, described third electrode, described 5th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 7th electrode are as the output of described pulse transformer, and described third electrode, the 5th electrode are as the input of described pulse transformer.

5. pulse transformer as claimed in claim 2, it is characterized in that, described first boss have the first electrode, the second electrode, third electrode and the 4th electrode, second boss have the 5th electrode, the 6th electrode, the 7th electrode and the 8th electrode, wherein, described first electrode and described 8th electrode are oppositely arranged, described second electrode and described 7th electrode are oppositely arranged, described third electrode and described 6th electrode are oppositely arranged, and described 4th electrode and described 5th electrode are oppositely arranged; Wherein said coiling comprises the first coiling, the second coiling, the 3rd coiling and the 4th coiling, the top of wherein said first coiling and end respectively with described first electrode, the 6th Electrode connection, the top of described second coiling and end respectively with described second electrode, the 5th Electrode connection, the top of described 3rd coiling and end respectively with described third electrode, the 8th Electrode connection, the top of described 4th coiling and end respectively with described 4th electrode, the 7th Electrode connection; Wherein said first electrode, described 5th electrode are as the input of described pulse transformer, described 4th electrode, described 8th electrode are as the output of described pulse transformer, or, wherein said first electrode, described 5th electrode are as the output of described pulse transformer, and described 4th electrode, the 8th electrode are as the input of described pulse transformer.

6. the pulse transformer as described in any one of claim 3 to 5, is characterized in that, described first coiling, described second coiling, described 3rd coiling and described 4th coiling turn to four layers on described center pillar; Or described first coiling and described 3rd coiling are one group and described second coiling and described 4th coiling are another group, and two groups of coilings turn to bilayer on described center pillar; Or described first coiling and described second coiling are one group and described 3rd coiling and described 4th coiling are another group, and two groups of coilings turn to bilayer on described center pillar.

7. the pulse transformer as described in any one of claim 1 to 6, it is characterized in that, also comprise the second mold core body, the material of described second mold core body is permeability magnetic material, described second mold core body is arranged on the reverse side being arranged on the side on PCB of the first mold core body, coordinates and form closed magnetic circuit with the first mold core body; Preferably, described first mold core body of described pulse transformer comprises main part and plate portion, described some coiling coilings on the body portion, described main part is installed on PCB by described plate portion, described plate portion has the electrode be electrically connected with the electrode one_to_one corresponding of described main part, the electrode on described plate portion and PCB pad connect one to one.

8. the pulse transformer as described in any one of claim 1 to 7, is characterized in that, the first mold core body and the second mold core body contain permeability magnetic material, is preferably Ferrite Material, is more preferably nickel-zinc-ferrite material; Preferably, the first mold core body is the combined material of permeability magnetic material and ceramic material, plastics or composite material.

9. the manufacture method of a pulse transformer, it is characterized in that, according to the pulse transformer that the structure of pulse transformer described in any one of claim 1 to 8 is formed in conjunction with PCB layout, wherein, some coilings are carried out coiling around described first mold core body, and the electrode corresponding with in described first mold core body connects, form multiple winding, described multiple winding carries out corresponding wiring to corresponding PCB pad respectively and connects, by the combination with PCB pad, thus there is the characteristic of power transformer product; Wherein, a part of winding in multiple winding carries out connecting with corresponding PCB pad and forms armature winding, and another part winding in multiple winding carries out connecting with corresponding PCB pad and forms secondary winding.

10. the manufacture method of pulse transformer as claimed in claim 9, it is characterized in that, make as described in any one of claim 3 to 5 during pulse transformer, described first coiling, described second coiling, described 3rd coiling and described 4th coiling divide and on described center pillar, turn to four layers four times; Or described first coiling and described 3rd coiling are one group and described second coiling and described 4th coiling are another group, two groups of coilings turn to bilayer at twice or simultaneously on described center pillar; Or described first coiling and described second coiling are one group and described 3rd coiling and described 4th coiling are another group, two groups of coilings turn to bilayer at twice or simultaneously on described center pillar.