CN103050459A - Power module signal terminal and connecting structure thereof - Google Patents
Power module signal terminal and connecting structure thereof Download PDFInfo
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- CN103050459A CN103050459A CN2013100337538A CN201310033753A CN103050459A CN 103050459 A CN103050459 A CN 103050459A CN 2013100337538 A CN2013100337538 A CN 2013100337538A CN 201310033753 A CN201310033753 A CN 201310033753A CN 103050459 A CN103050459 A CN 103050459A
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- power module
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Abstract
The invention relates to a power module signal terminal which comprises a platform part, an elasticity part which is arranged at the inner side of the platform part and is used for connecting and releasing stress, and a fixing part arranged at the outer side of the platform part, wherein the elasticity part on each signal terminal comprises an inclined plate and a folding edge arranged at the lower part of the inclined plate, more than three signal terminals are available, the fixing parts of the signal terminals are in embedded connection in a window of an outer housing at intervals and extend out of the end surface of the outer housing, sleeve pipes arranged at two sides of an outer housing sleeve are in pressing connection in corresponding connecting holes in a copper base plate, and the inclined plate and the bending bottom of the folding edge of each signal terminal are elastically in pressing connection on a ceramic-covered metal base plate arranged at the upper part of the copper base plate. The power module signal terminal is reasonable in structure, reliable in connection and convenient to install, and can improve the work reliability.
Description
Technical field
The present invention relates to a kind of signal terminal of power module and syndeton thereof, belong to power model manufacturing technology field.
Background technology
Power model is widely used in ac motor speed control by variable frequency and direct current machine chopping regulating speed and various high-performance power supply, such as fields such as UPS, induction heating, electric welding machine, active compensation, DC-DC etc. and industrial electric automations, wide market is arranged.The conventional power semiconductors module mainly comprises shell, main circuit board and drive circuit board, each device such as semiconductor chip and electrode terminal and signal terminal are welded on and cover the cermet substrate and consist of main circuit board, and the printed circuit board (PCB) that is welded with integrated circuit (IC) chip and each device consists of drive circuit board, for reducing the volume of power model, drive circuit board is passed through on the screw mounting casing, each signal terminal need pass terminal hole on the cover plate of outer casing and the terminal hole on the drive circuit board, by scolder signal terminal is connected with drive circuit board again, is connected input and output that are connected and drive signal with the power semiconductor modular external circuit with signal terminal by electrode terminal.
At present the signal terminal on the power model mostly by the scolder high temperature sintering on the metal level that covers the cermet substrate, in welding process, can make the metal level and the terminal that cover the cermet substrate produce welding stress at the solder layer place under the high temperature, and the operational environment of power model is to circulate at-40 ℃ to 125 ℃, therefore after working after a while, can cause that finally metal level and the signal terminal junction of covering the cermet substrate come off, and produce the solder joint fatigue phenomenon, thereby have influence on the life-span of overall power device.Secondly; signal terminal is welded on the metal level that covers the cermet substrate by joint face; not only higher to layer on surface of metal and the signal terminal surface requirements of covering the cermet substrate; especially the metal level that covers the cermet substrate is also can have the thermal expansion difference between the copper material of Copper Foil and signal terminal; welding performance is not high; it is electrical and impact is led; welding process not only needs scolder simultaneously; protective gas when scaling powder and welding; not only the high temperature sintering welding sequence time is long; and the high temperature that produces easily causes other part material metallic character reductions; in addition factors such as the scolder in welding process trickling and welding resistance printing ink; the risk that can cause again solder side to stain; it is wayward to exist solder side, complex operation, the problem that welding efficiency is low.
In the power model assembling process, the terminal hole that each signal terminal need pass on the cover plate of shell could weld with drive circuit board, although it is certain spacing that cover plate upper terminal hole can be carried out each terminal, but cover plate adopts ambroin injection molded, because cover plate produces installation effectiveness and the assembly quality that distortion affects each terminal.
Power model is through being usually used in vibrating larger place, because drive circuit board can not reliably be installed on the shell, so cause that the electrical connection between signal terminal and the external circuit is unreliable, and then affect the useful life of power semiconductor modular.
Summary of the invention
The purpose of this invention is to provide a kind of rational in infrastructurely, signal terminal connects reliable, and is easy for installation, can improve the encapsulating structure of the power model of functional reliability.
The present invention is that the technical scheme that achieves the above object is: a kind of signal terminal of power module, it is characterized in that: comprise terrace part, be positioned at the terrace part inboard for joining and the elastic part of Stress Release and the standing part that is positioned at the terrace part outside, the elastic part on each signal terminal comprises to the flanging of swash plate and swash plate bottom.
Wherein: described signal terminal is more than three, and the standing part interval of each signal terminal is rabbeted on shell and is extended the shell end face, the sleeve pipe that is arranged on the shell both sides is crimped in the connecting hole corresponding on the copper soleplate, the swash plate of signal terminal and the bending of flanging bottom elastic compression joint covering on the pottery metal substrate on copper soleplate top.
Signal terminal of the present invention comprises terrace part, it is inboard for joining and the elastic part of Stress Release and the standing part that is positioned at the terrace part outside to be positioned at terrace part, therefore can process mechanically, the standing part of signal terminal is rabbeted on shell and the shell end face is stretched out on its top, therefore after shell makes, can realize that all signal terminals are fixed on the shell, play the effect of reinforcing signal terminal by shell, the present invention is provided with elastic part in the terrace part inboard, this elastic part comprises the flanging of swash plate and swash plate bottom, when copper soleplate is connected with shell, with be fixed on each signal terminal on the shell by its bottom bending part elastic compression joint on the metal level that covers the ceramet substrate, make signal terminal can with cover the ceramet substrate and realize reliably contacting, especially in the larger place of vibration, by the elasticity of signal terminal self, can both be connected with the metal level that covers the ceramet substrate reliably by the inhibit signal terminal.Elastic part and standing part structure that signal terminal of the present invention adopts terrace part and is arranged on the inside and outside both sides of terrace part, signal terminal is had under certain intensity, can also make not only flexible but also flexible of signal terminal, elastic energy by signal terminal self well discharges various stress, the toughness of synchronous signal terminal so that power model in the process of thermal cycle, can not rupture the functional reliability of power model under adverse circumstances.Person's character is invented each signal terminal and passed the shell end face, need not by cover plate, can not be out of shape installation effectiveness and the assembly quality that affects each signal terminal because cover plate produces, and is convenient for assembly, quick.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is the structural representation of signal terminal of the present invention.
Fig. 2 is that signal terminal of the present invention connects the structural representation when covering the pottery metal substrate.
Fig. 3 is that signal terminal of the present invention is fixed on the structural representation on the shell.
Fig. 4 is that the present invention is with the blast structural representation of rate module.
Wherein: 1-signal terminal, 1-1-elastic part, 1-2-terrace part, 1-3-standing part, 2-shell, the 2-1-convex tendon, the 3-electrode terminal, the 4-cover plate, the 5-copper soleplate, the 5-1-connecting hole, 6-sleeve pipe, 7-cover the pottery metal substrate.
Embodiment
See shown in Fig. 1-4, signal terminal of the present invention comprises terrace part 1-2, it is inboard for joining and the elastic part 1-1 of Stress Release and the standing part 1-3 that is positioned at the terrace part 1-2 outside to be positioned at terrace part 1-2, elastic part 1-1 on the signal terminal 1 comprises to the flanging of swash plate and swash plate bottom, be connected with shell 2 by standing part 1-3, signal terminal 1 is firmly connected, and under some strength, and elastic part 1-1 makes signal terminal 1 also have elasticity and toughness, signal terminal of the present invention 1 adopts the punching press of phosphor bronze material to make and through annealing in process, elastic compression joint is on the Copper Foil that covers pottery metal substrate 7 bottom signal terminal 1 bending, elastic force by signal terminal 1 bottom keeps reliably being connected with the metal level that covers pottery metal substrate 7, self elastic force by signal terminal 1 discharges various stress simultaneously, can not rupture in the process of thermal cycle.
Each signal terminal 1 of the present invention also can have sphere at the swash plate of its elastic part 1-1 and the bending bottom of flanging, signal terminal 1 is covering on the pottery metal substrate 7 by the sphere elastic compression joint, by carrying out a tin ball mode in its bottom, it is better to make the sphere of signal terminal 1 bottom and metal level on covering pottery metal substrate 7 contact meeting, can better avoid may having the loose contact that some signal terminal local deformations cause after the signal terminal 1 bending punching press.
See shown in Fig. 1-4, the present invention is in order to make signal terminal 1 make its elastic part 1-1 have preferably thrust, the swash plate of signal terminal 1 elastic part 1-1 is positioned at the medial end of terrace part 1-2, and swash plate tilts to terrace part 1-2, and this swash plate is positioned at medial end can be horizontal in the side of terrace part 1-2 or the end of terrace part 1-2.
See shown in Fig. 2-4, signal terminal of the present invention is more than 1 three, and the standing part 1-3 interval of each signal terminal 1 is rabbeted on shell 2 and is extended shell 2 end faces, make each signal terminal 1 can reliably be connected on the shell 2, be connected with drive circuit board by the part of extending shell 2, realize the input and output of signal, the present invention also can be provided with at the window wall of shell 2 windows a plurality of convex tendon 2-1, each convex tendon 2-1 is arranged on the top of the terrace part 1-2 of each signal terminal 1, make signal terminal 1 keep certain thrust, and further improve the connection reliability of signal terminal 1, the top of each signal terminal 1 standing part 1-3 of the present invention is provided with aperture so that weld with drive circuit board.
See shown in Fig. 2-4, the sleeve pipe 6 that the present invention is arranged on shell 2 both sides is crimped in the connecting hole 5-1 corresponding on the copper soleplate 5, the interlocking of shell of the present invention 2 both sides has the sleeve pipe 6 that stretches out its bottom surface, these shell 2 every sides are rabbeted respectively two sleeve pipes 6, be crimped in the installing hole of copper soleplate 5 by four sleeve pipes 6, realization shell 2 is connected with copper soleplate 5.See shown in Fig. 2-4, the swash plate of each signal terminal 1 of the present invention and the bending of flanging bottom elastic compression joint covering on the pottery metal substrate 7 on copper soleplate 5 tops, this covers and is fixed with semiconductor chip and device and a plurality of electrode terminal 3 on the pottery metal substrate 7, realize that with semiconductor chip and device circuit is connected by covering pottery metal substrate 7, and signal terminal 1 by the elastic compression joint of relying on oneself after covering on the pottery metal substrate 7, signal terminal 1 can be discharged various stress, signal terminal 1 elastic compression joint of the present invention when covering pottery metal substrate 7 swash plate and the angle between the terrace part 1-2 plane between 30-60 °, such as this angle at 35 ° or 45 ° or 55 ° etc., make it have preferably elastic force and crimp force, the shell wall of shell 2 windows is provided with a plurality of convex tendon 2-1, each convex tendon 2-1 is arranged on the top of the terrace part 1-2 of each signal terminal 1, can limit the distortion of terrace part 1-2, when cover plate 4 was installed in the window place of shell 2, each electrode terminal 3 passed the electrode terminal hole on the cover plate 4.
Claims (7)
1. signal terminal of power module, it is characterized in that: comprise terrace part (1-2), be positioned at terrace part (1-2) inboard for joining and the elastic part (1-1) of Stress Release and the standing part (1-3) that is positioned at terrace part (1-2) outside, the elastic part (1-1) on the signal terminal (1) comprises to the flanging of swash plate and swash plate bottom.
2. signal terminal of power module according to claim 1 is characterized in that: have sphere bottom the swash plate of its elastic part of described signal terminal (1) (1-1) and the bending of flanging.
3. signal terminal of power module according to claim 1, it is characterized in that: the swash plate of described signal terminal (1) elastic part (1-1) is positioned at the medial end of terrace part (1-2), and swash plate tilts to terrace part (1-2).
4. signal terminal of power module according to claim 1 is characterized in that: described signal terminal (1) is made with the punching press of phosphor bronze material and through annealing in process.
5. the syndeton of signal terminal of power module according to claim 1, it is characterized in that: described signal terminal is more than (1) three, and standing part (1-3) interval of each signal terminal (1) is rabbeted upper at shell (2) and is extended shell (2) end face, the sleeve pipe (6) that is arranged on shell (2) both sides is crimped in the upper corresponding connecting hole (5-1) of copper soleplate (5), the swash plate of signal terminal (1) and the bending of flanging bottom elastic compression joint covering on the pottery metal substrate (7) on copper soleplate (5) top.
6. the syndeton of signal terminal of power module according to claim 5 is characterized in that: described signal terminal (1) elastic compression joint when covering pottery metal substrate (7) swash plate and the angle between terrace part (1-2) plane between 30-60 °.
7. the syndeton of signal terminal of power module according to claim 5, it is characterized in that: the shell wall of described shell (2) window is provided with a plurality of convex tendons (2-1), and each convex tendon (2-1) correspondence is arranged on the top of the terrace part (1-2) of each signal terminal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033753.8A CN103050459B (en) | 2013-01-28 | 2013-01-28 | Signal terminal of power module and syndeton thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033753.8A CN103050459B (en) | 2013-01-28 | 2013-01-28 | Signal terminal of power module and syndeton thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103050459A true CN103050459A (en) | 2013-04-17 |
| CN103050459B CN103050459B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310033753.8A Active CN103050459B (en) | 2013-01-28 | 2013-01-28 | Signal terminal of power module and syndeton thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017493A (en) * | 2016-01-28 | 2017-08-04 | 株洲南车时代电气股份有限公司 | A kind of module by signal terminal |
| CN108010892A (en) * | 2016-11-02 | 2018-05-08 | 株洲中车时代电气股份有限公司 | A kind of power semiconductor modular welder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM292816U (en) * | 2006-01-17 | 2006-06-21 | Lotes Co Ltd | Electric connector |
| US7494389B1 (en) * | 2008-03-10 | 2009-02-24 | Infineon Technologies Ag | Press-fit-connection |
| CN102013578A (en) * | 2009-09-07 | 2011-04-13 | 比亚迪股份有限公司 | Conductor extraction structure and power module |
| CN102064160A (en) * | 2010-11-11 | 2011-05-18 | 嘉兴斯达微电子有限公司 | Power module containing special power terminal |
-
2013
- 2013-01-28 CN CN201310033753.8A patent/CN103050459B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM292816U (en) * | 2006-01-17 | 2006-06-21 | Lotes Co Ltd | Electric connector |
| US7494389B1 (en) * | 2008-03-10 | 2009-02-24 | Infineon Technologies Ag | Press-fit-connection |
| CN102013578A (en) * | 2009-09-07 | 2011-04-13 | 比亚迪股份有限公司 | Conductor extraction structure and power module |
| CN102064160A (en) * | 2010-11-11 | 2011-05-18 | 嘉兴斯达微电子有限公司 | Power module containing special power terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017493A (en) * | 2016-01-28 | 2017-08-04 | 株洲南车时代电气股份有限公司 | A kind of module by signal terminal |
| CN108010892A (en) * | 2016-11-02 | 2018-05-08 | 株洲中车时代电气股份有限公司 | A kind of power semiconductor modular welder |
| CN108010892B (en) * | 2016-11-02 | 2020-06-26 | 株洲中车时代电气股份有限公司 | Power semiconductor module welding set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103050459B (en) | 2016-05-18 |
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