CN103594407A - Half-bridge module three-time welding fixing tool - Google Patents
Half-bridge module three-time welding fixing tool Download PDFInfo
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- CN103594407A CN103594407A CN201310613644.3A CN201310613644A CN103594407A CN 103594407 A CN103594407 A CN 103594407A CN 201310613644 A CN201310613644 A CN 201310613644A CN 103594407 A CN103594407 A CN 103594407A
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- auxiliary electrode
- welding
- bridge module
- electrode
- fixing tool
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
- H01L24/75—Apparatus for connecting with bump connectors or layer connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/75—Apparatus for connecting with bump connectors or layer connectors
Abstract
The invention discloses a half-bridge module three-time welding fixing tool which comprises a welding tool body. The welding tool body is provided with three oblong main electrode locating holes which are located at the tail end of the welding tool body. The welding tool body is provided with an auxiliary electrode fixing tool. A plurality of auxiliary electrode locating holes are formed in an auxiliary electrode fixing tool body. The design of the half-bridge module three-time welding fixing tool enables a half-bridge module grid electrode G to be in short circuit with an emitting electrode E, prevents an auxiliary electrode from inclining after welding for three times, and fixes an auxiliary electrode.
Description
Technical field
The invention belongs to electronic manufacturing field, particularly a kind of frock positioning when to half-bridge module three times welding.
Background technology
IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor, by BJT (Bipolar Junction Transistor, bipolar junction transistor) and MOS (metal oxide semiconductor, insulating gate type field effect tube) the compound full-control type voltage driven type power semiconductor forming, have MOSFET(Metal-Oxide-Semiconductor Field-Effect Transistor concurrently, metal-oxide half field effect transistor) high input impedance and GTR(Giant Transistor, the advantage of low conduction voltage drop two aspects huge transistor).In modern power electronics technology, obtain application more and more widely, in the big or middle power application of upper frequency, occupied leading position.
Existing IGBT sequence of modules wide range, voltage from 6500V to 600V, current range from 3600A to 15A not etc.IGBT module package form is also varied, comprises single tube, half-bridge, two-tube, three-phase bridge etc.Manufacturer is with world ,ABB, Mitsubishi of Wei Zhu，Ru Infineon of well-known producer, Xi Menkang, IR etc.
At present, IGBT module manufacture process key is welding procedure, and welding procedure has comprised the welding between chip and DBC, the welding between DBC (Direct Bonding Copper, covers copper ceramic substrate) and base plate and the welding between electrode and DBC.The welding of chip and DBC is called to once welding, and the welding between DBC and base plate is called secondary welding, and the welding of electrode and DBC is called three welding.In half-bridge module, auxiliary electrode leg area is little, little with the contact area of DBC, has therefore increased welding difficulty.
The welding tooling that existing three welding toolings are main electrode.
(1) igbt chip is MOSFET structure, and chip grid is realized electricity isolation by layer oxide film and emitter.Because this oxide-film is very thin, its puncture voltage generally reaches 20-30V, require to be no more than 20V, so static also can cause IGBT gate breakdown, thereby damage IGBT during use.So static and to cause gate breakdown be one of common cause of losing efficacy of IGBT.After half-bridge module bonding, auxiliary electrode can be drawn grid G, emitter E control signal, for preventing grid electrostatic breakdown, during three welderings, need make grid G, emitter E short circuit.And the welding tooling that existing three welding fixtures are main electrode does not have special G, E short circuit frock.
(2) under a welding temperature, auxiliary electrode and DBC are welded together, scolder fusing point used is high, and three welding temperatures are lower than this scolder fusing point, and auxiliary electrode scolder can not melt in theory, and auxiliary electrode can not tilt.But in actual conditions in order to make main electrode firm welding, three welding temperatures only than auxiliary electrode solder fusing point low 10 ℃～20 ℃, and auxiliary electrode scolder is to pile up electrode leg place, though scolder can not melt completely at three weldering temperature, but scolder can be softening in welding process, auxiliary electrode can tilt, and causes module to be scrapped.
Summary of the invention
After the half-bridge module bonding of IGBT half-bridge module, auxiliary electrode can be drawn grid G, emitter E control signal, and for preventing the inclination of grid electrostatic breakdown and auxiliary electrode, the present invention sets up special half-bridge module to be welded and fixed frock three times.
A kind of half-bridge module is welded and fixed frock three times, comprise welding tooling body, described welding tooling body offers 3 rectangular main electrode location holes, be positioned at the tail end on described welding tooling body, be provided with auxiliary electrode fixing tool, in described its main body of auxiliary electrode fixing tool, offer some auxiliary electrode location holes, the position of described main electrode location hole and auxiliary electrode location hole is corresponding one by one with the position of main electrode on described half-bridge module and auxiliary electrode.
Preferably, to be welded and fixed the making material of frock for three times be metal to described half-bridge module.
Preferably, the quantity of described auxiliary electrode location hole is 4.
Compared with prior art, beneficial effect of the present invention: the design of this frock can, by half-bridge module grid G, emitter E short circuit, prevent grid electrostatic breakdown.Prevent that three postwelding auxiliary electrodes from tilting, fixedly auxiliary electrode, reduces module failure rate simultaneously.This frock is simple to operate, easy to use, can effectively enhance productivity.
Accompanying drawing explanation
For the technical scheme in the embodiment of the present invention is more clearly described, to the accompanying drawing of required use in embodiment be introduced simply below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that in prior art, half-bridge module is welded and fixed frock for three times;
Fig. 2 is the structural representation that half-bridge module of the present invention is welded and fixed frock for three times;
Fig. 3 is the structural representation of auxiliary electrode.
Wherein:
1 ', existing half-bridge module is welded and fixed the frock body of frock for three times;
2 ', existing half-bridge module is welded and fixed the main electrode location hole of frock for three times;
1, half-bridge module of the present invention is welded and fixed the frock body of frock for three times;
2, half-bridge module of the present invention is welded and fixed the main electrode location hole of frock for three times;
3, half-bridge module of the present invention is welded and fixed the auxiliary electrode positioning tool of frock for three times;
4, half-bridge module of the present invention is welded and fixed the auxiliary electrode location hole of frock for three times;
5, auxiliary electrode; 6, auxiliary electrode leg.
Embodiment
As shown in Figure 1, existing three welding toolings 1 ' only comprise the location hole 2 ' of main electrode, there is no the positioning tool of special grid G and emitter E short circuit frock and auxiliary electrode.Yet for preventing grid electrostatic breakdown, during three welding, need be grid G and emitter E short circuit.In addition, three welding temperatures are lower than this scolder fusing point, and auxiliary electrode scolder can not melt in theory, and auxiliary electrode can not tilt.But in actual conditions, though scolder can not melt completely at three weldering temperature, but scolder can be softening in welding process, and auxiliary electrode can tilt, and causes module to be scrapped.
The present invention is directed to deficiency of the prior art, provide a kind of half-bridge module to be welded and fixed frock three times, by auxiliary electrode location hole is set, effective fixedly main electrode and auxiliary electrode, both can, by half-bridge module grid G, emitter E short circuit, prevent again that three postwelding auxiliary electrodes from tilting, and improved frock efficiency of assembling, be convenient to the automatic welding of equipment, enhance productivity.
To technical scheme of the present invention, be clearly and completely described by embodiment below.Obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A kind of half-bridge module proposing according to object of the present invention is welded and fixed frock three times, during for three welding, main electrode and auxiliary electrode is fixedly welded on to DBC substrate.As shown in Figure 2, described half-bridge module is welded and fixed frock for three times and comprises welding tooling body 1, described welding tooling body 1 offers 3 rectangular main electrode location holes 2, be positioned at the tail end on described welding tooling body 1, it is the rear of last main electrode location hole 2, be provided with auxiliary electrode fixing tool 3, in described auxiliary electrode fixing tool 3 its main bodys, offer some auxiliary electrode location holes 4.Three welding toolings of half-bridge module of the present invention are as a whole by the welding tooling of main electrode and auxiliary electrode fixing tool, one-body molded during making.Wherein, the position of main electrode location hole and auxiliary electrode location hole is corresponding one by one with the position of main electrode on half-bridge module and auxiliary electrode.
In IGBT module, the position of main electrode and auxiliary electrode is fixed, wherein auxiliary electrode finger grid G, emitter E.Design assistant electrode fixing tool 3 of the present invention, the fixing tool of finger grid G, emitter E, in half-bridge module, upper and lower half-bridge has respectively pair of control terminal (grid G, emitter E).After half-bridge module bonding, auxiliary electrode can be drawn grid G, emitter E control signal, and for preventing grid electrostatic breakdown, three welderings time need make grid G, emitter E short circuit, and in the present invention, auxiliary electrode frock can realize the short circuit of grid G, emitter E.
As shown in Figure 2, the quantity of above-mentioned auxiliary electrode location hole 4 is 4, i.e. the auxiliary electrode location hole of the two pairs of grid G and emitter E.These 4 auxiliary electrode location holes are parallel to be established side by side, order be followed successively by the location hole of first grid G, the location hole of the location hole of the first emitter E, the second emitter E, the location hole of second grid G.
The making material that half-bridge module of the present invention is welded and fixed frock for three times is metal.The perforate size of auxiliary electrode location hole 4 is held auxiliary electrode 5 just.Because auxiliary electrode leg 6 areas are little, be about 6mm
2, in order to make auxiliary electrode 5 firm welding, auxiliary electrode 5 is welded under a welding temperature with DBC, now scolder fusing point used is high, and three welding temperatures are lower than this scolder fusing point, and the scolder of auxiliary electrode can not melt in theory, and auxiliary electrode 5 can not tilt.But in actual conditions in order to make main electrode firm welding, three welding temperatures only than auxiliary electrode solder fusing point low 10 ℃～20 ℃, and auxiliary electrode scolder is to pile up electrode leg place, though scolder can not melt completely at three weldering temperature, but scolder can be softening in welding process, auxiliary electrode 5 can tilt, and causes module to be scrapped.Therefore, the auxiliary electrode frock in the present invention can effectively prevent that three postwelding auxiliary electrodes from tilting, fixedly auxiliary electrode.
Use step of the present invention is as follows:
S1: by auxiliary electrode 5 and DBC welding.In order to make auxiliary electrode 5 firm welding, auxiliary electrode 5 is welded under a welding temperature with DBC, after chip and DBC welding, by auxiliary electrode 5 and DBC welding.
S2: will weld DBC and the base plate welding of auxiliary electrode 5.
S3: by main electrode be welded on DBC.Back-off of the present invention is placed on the half-bridge module after secondary welding, the auxiliary electrode location hole 4 that auxiliary electrode 5 is passed in frock of the present invention, in the situation that auxiliary electrode 5 obtains fully fixedly, main electrode is positioned over to the welding of carrying out in main electrode location hole 2 with DBC, therefore, the scolder that can prevent auxiliary electrode occurs to soften at the temperature of three welding, avoids auxiliary electrode 5 to tilt.Make again grid G and the emitter E generation short circuit in auxiliary electrode simultaneously.
Compared with prior art, the present invention has the following advantages:
(1) auxiliary electrode fixing tool is set on the basis of main electrode fixing tool, by the auxiliary electrode location hole in this auxiliary electrode frock, auxiliary electrode is fixed, carry out again subsequently the welding of main electrode, guarantee auxiliary electrode not run-off the straight under the temperature impact of main electrode welding.After main electrode is put into main electrode location hole, effectively fixedly main electrode, can accurately be placed on the main electrode position of DBC substrate, there is no deviation, is beneficial to welding.
(2) auxiliary electrode fixing tool can be all in fixing auxiliary electrode by half-bridge module grid G, emitter E short circuit, prevent grid electrostatic breakdown, reduce module failure rate.
(3) this frock is simple to operate, easy to use, can effectively enhance productivity.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a half-bridge module is welded and fixed frock three times, comprise welding tooling body, described welding tooling body offers 3 rectangular main electrode location holes, it is characterized in that: be positioned at the tail end on described welding tooling body, be provided with auxiliary electrode fixing tool, in described its main body of auxiliary electrode fixing tool, offer some auxiliary electrode location holes, the position of described main electrode location hole and auxiliary electrode location hole is corresponding one by one with the position of main electrode on described half-bridge module and auxiliary electrode.
2. half-bridge module according to claim 1 is welded and fixed frock three times, it is characterized in that: the making material that described half-bridge module is welded and fixed frock for three times is metal.
3. half-bridge module according to claim 1 is welded and fixed frock three times, it is characterized in that: the quantity of described auxiliary electrode location hole is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613644.3A CN103594407A (en) | 2013-11-25 | 2013-11-25 | Half-bridge module three-time welding fixing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613644.3A CN103594407A (en) | 2013-11-25 | 2013-11-25 | Half-bridge module three-time welding fixing tool |
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| CN103594407A true CN103594407A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310613644.3A Pending CN103594407A (en) | 2013-11-25 | 2013-11-25 | Half-bridge module three-time welding fixing tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671478A (en) * | 2017-11-06 | 2018-02-09 | 常州瑞华新能源科技有限公司 | A kind of mould structure for being easy to assemble electrode |
Citations (5)
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| JP2002026246A (en) * | 2000-06-30 | 2002-01-25 | Toshiba Corp | Semiconductor device |
| CN102254902A (en) * | 2011-06-30 | 2011-11-23 | 江苏宏微科技有限公司 | IGBT (Insulated Gate Bipolar Translator) power half-bridge module |
| CN102593111A (en) * | 2012-02-23 | 2012-07-18 | 株洲南车时代电气股份有限公司 | IGBT (insulated gate bipolar transistor) module and manufacturing method of IGBT module |
| CN103325712A (en) * | 2012-03-20 | 2013-09-25 | 西安永电电气有限责任公司 | IGBT module packaging welding auxiliary device and system |
| CN103394855A (en) * | 2013-07-31 | 2013-11-20 | 西安永电电气有限责任公司 | Fixing tool structure and electrode welding method |
-
2013
- 2013-11-25 CN CN201310613644.3A patent/CN103594407A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002026246A (en) * | 2000-06-30 | 2002-01-25 | Toshiba Corp | Semiconductor device |
| CN102254902A (en) * | 2011-06-30 | 2011-11-23 | 江苏宏微科技有限公司 | IGBT (Insulated Gate Bipolar Translator) power half-bridge module |
| CN102593111A (en) * | 2012-02-23 | 2012-07-18 | 株洲南车时代电气股份有限公司 | IGBT (insulated gate bipolar transistor) module and manufacturing method of IGBT module |
| CN103325712A (en) * | 2012-03-20 | 2013-09-25 | 西安永电电气有限责任公司 | IGBT module packaging welding auxiliary device and system |
| CN103394855A (en) * | 2013-07-31 | 2013-11-20 | 西安永电电气有限责任公司 | Fixing tool structure and electrode welding method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671478A (en) * | 2017-11-06 | 2018-02-09 | 常州瑞华新能源科技有限公司 | A kind of mould structure for being easy to assemble electrode |
| CN107671478B (en) * | 2017-11-06 | 2024-02-06 | 常州瑞华新能源科技有限公司 | Die structure convenient for assembling electrode |
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Application publication date: 20140219 |