CN206332016U - High-power thyristor lead for retractable pencil electrode ceramic shell - Google Patents
High-power thyristor lead for retractable pencil electrode ceramic shell Download PDFInfo
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- CN206332016U CN206332016U CN201621360327.0U CN201621360327U CN206332016U CN 206332016 U CN206332016 U CN 206332016U CN 201621360327 U CN201621360327 U CN 201621360327U CN 206332016 U CN206332016 U CN 206332016U
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- anode
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- aluminium core
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Abstract
The utility model is related to a kind of high-power thyristor aluminium core electrode ceramic shell, it includes ceramic base and upper lid, and the ceramic base includes anode flange, ceramic ring, anode seal upper copper bowl, anode seal lower copper bowl, gate lead pipe and aluminium core anode electrode；Anode flange is welded in the upper surface of ceramic ring with one heart, anode seal upper copper bowl is welded in the lower surface of ceramic ring with one heart, anode seal lower copper bowl is closely crimped on aluminium core anode electrode lower surface, aluminium core anode electrode is wrapped between anode seal upper copper bowl and anode seal lower copper bowl, and gate lead pipe is connected on the shell wall of ceramic ring；Upper lid includes negative electrode sealing upper copper bowl, negative electrode sealing lower copper bowl and aluminium core cathode electrode, and aluminium core cathode electrode is wrapped between negative electrode sealing upper copper bowl and negative electrode sealing lower copper bowl by closely crimping mode.The utility model replaces copper electrode with aluminium electrode, and the weight of encapsulating structure is greatly reduced in the case where not influenceing performance.
Description
Technical field
The utility model is related to electric and electronic technical field, and aluminium core electrode is used in more particularly to a kind of high-power thyristor encapsulation
Ceramic package.
Background technology
Conventional electric power electronic device is primarily referred to as IGCT, recently as the novel electric power electric device such as IGBT, MOSFET
The development of part, the market space of IGCT is gradually compressed, but its high pressure and extra-high voltage direct-current transmission engineering, electrolysis power,
The stability and reliability of the high-power field application such as metallurgy are still that novel power transistor can not replace, and high-power crystalline substance
Brake tube electrode uses oxygen-free high conductivity type copper material at present, and its advantage is with good soldering, excellent electric heating property, Gao Zhen
Low volatile matter under sky；Have the disadvantage that the ratio of copper is heavy, price, the weight of a set of high-power thyristor ceramic package shell copper electrode
Amount accounts for 80% or so of whole shell, and the application scenario of high-power thyristor is often dozens of even up to a hundred devices in series
Or it is used in parallel, therefore the weight of whole device is significantly increased in copper electrode.
Replace copper because aluminum electric heating property is relatively and lightweight, cheap with copper, therefore with aluminium electrode
Electrode is sought to drop the important channel of this drop weight as industry, but the fusing point of aluminium is low, brazing temperature and device operating temperature gap
Less than normal, reliability is under suspicion, and aluminium electrode surface abrasion resistance difference can influence device service life, and its higher vacuum is waved
Hair point may also influence device performance.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high-power thyristor for above-mentioned prior art to use
Aluminium core electrode ceramic shell, replaces copper electrode with aluminium electrode, encapsulating structure is greatly reduced in the case where not influenceing performance
Weight.
The technical scheme in the invention for solving the above technical problem is：A kind of high-power thyristor is made pottery with aluminium core electrode
Ceramic shell, it includes for encapsulating chip and the ceramic base and upper lid of mutual soldering together, and the ceramic base is included
There are anode flange, ceramic ring, anode seal upper copper bowl, anode seal lower copper bowl, gate lead pipe and aluminium core anode electrode；The sun
Pole flange is welded in the upper surface of ceramic ring with one heart, and the anode seal upper copper bowl is welded in the lower surface of ceramic ring, the sun with one heart
Pole sealing lower copper bowl is closely crimped on aluminium core anode electrode lower surface, and the aluminium core anode electrode is wrapped in anode seal upper copper bowl
Between anode seal lower copper bowl, the anode flange, ceramic ring, anode seal upper copper bowl overlap concentric welding, institute from top to bottom
Gate lead pipe is stated to be connected on the shell wall of ceramic ring；
The upper lid includes negative electrode sealing upper copper bowl, negative electrode sealing lower copper bowl and aluminium core cathode electrode, and the aluminium core is cloudy
Pole electrode is wrapped between negative electrode sealing upper copper bowl and negative electrode sealing lower copper bowl by closely crimping mode.
Compared with prior art, the utility model has the advantage of：
1. aluminium electrode need not carry out soldering, aluminium electrode brazing temperature and the small wind of device operating temperature difference are avoided
Danger, while also avoiding high temperature brazing stress to flatness of electrode, the influence of the depth of parallelism.
2. aluminium electrode is wrapped in the middle of sealing copper bowl by closely crimping mode, does not contact directly, avoid with chip, molybdenum sheet
The influence that aluminium electrode wears no resistance with high volatile to device performance and life-span.
The utility model provides relatively reliable technological approaches, high-power thyristor aluminium core electricity for aluminium electrode substitution copper electrode
Than original copper electrode ceramic package installation weight and real revolution can be greatly reduced with loss of weight 50% or so in pole ceramic package
Property reduces cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, the utility model is related to a kind of high-power thyristor aluminium core electrode ceramic shell, including is used for
Chip is encapsulated, it is necessary to the ceramic base and upper lid that are combined by cold welding, the ceramic base include anode flange 1,
Ceramic ring 2, anode seal upper copper bowl 3, anode seal lower copper bowl 4, gate lead pipe 5 and aluminium core anode electrode 6；The anode flange
1 is welded in the upper surface of ceramic ring 2 with one heart, and the anode seal upper copper bowl 3 is welded in the lower surface of ceramic ring 2, the anode with one heart
Sealing lower copper bowl 4 is fastened on the lower surface of aluminium core anode electrode 6, the aluminium core anode electrode 6 be wrapped in anode seal upper copper bowl 3 with
Between anode seal lower copper bowl 4, the anode flange 1, ceramic ring 2, anode seal upper copper bowl 3 overlap concentric welding from top to bottom,
The gate lead pipe 5 is connected on the shell wall of ceramic ring 2, after the completion of above-mentioned welding, on aluminium core anode electrode 6 and anode seal
Copper bowl 4 is connected by closely crimping mode with anode seal lower copper bowl 4.
The upper lid includes negative electrode sealing upper copper bowl 7, negative electrode sealing lower copper bowl 8 and aluminium core cathode electrode 9, whole above to cover
It need not weld, the aluminium core cathode electrode 9 is wrapped under negative electrode sealing upper copper bowl 7 and negative electrode sealing by closely crimping mode
Between copper bowl 8.
In addition to the implementation, the utility model also includes other embodiment, all use equivalents or equivalent
The technical scheme of substitute mode formation, all should fall within the utility model scope of the claims.
Claims (1)
1. a kind of high-power thyristor aluminium core electrode ceramic shell, it include for encapsulate chip and mutual soldering together
Ceramic base and upper lid, the ceramic base includes copper under anode flange, ceramic ring, anode seal upper copper bowl, anode seal
Bowl, gate lead pipe and aluminium core anode electrode；The anode flange is welded in the upper surface of ceramic ring, the anode seal with one heart
Copper bowl is welded in the lower surface of ceramic ring with one heart, it is characterized in that the anode seal lower copper bowl is closely crimped under aluminium core anode electrode
Surface, the aluminium core anode electrode is wrapped between anode seal upper copper bowl and anode seal lower copper bowl, the anode flange, porcelain
Ring, anode seal upper copper bowl overlap concentric welding from top to bottom, and the gate lead pipe is connected on the shell wall of ceramic ring；On described
Lid includes negative electrode sealing upper copper bowl, negative electrode sealing lower copper bowl and aluminium core cathode electrode, and the aluminium core cathode electrode passes through close
Crimping mode is wrapped between negative electrode sealing upper copper bowl and negative electrode sealing lower copper bowl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360327.0U CN206332016U (en) | 2016-12-13 | 2016-12-13 | High-power thyristor lead for retractable pencil electrode ceramic shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360327.0U CN206332016U (en) | 2016-12-13 | 2016-12-13 | High-power thyristor lead for retractable pencil electrode ceramic shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206332016U true CN206332016U (en) | 2017-07-14 |
Family
ID=59290597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621360327.0U Active CN206332016U (en) | 2016-12-13 | 2016-12-13 | High-power thyristor lead for retractable pencil electrode ceramic shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206332016U (en) |
-
2016
- 2016-12-13 CN CN201621360327.0U patent/CN206332016U/en active Active
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