CN203205577U - Partly welded and thickened structure for laminated busbar - Google Patents
Partly welded and thickened structure for laminated busbar Download PDFInfo
- Publication number
- CN203205577U CN203205577U CN 201320205782 CN201320205782U CN203205577U CN 203205577 U CN203205577 U CN 203205577U CN 201320205782 CN201320205782 CN 201320205782 CN 201320205782 U CN201320205782 U CN 201320205782U CN 203205577 U CN203205577 U CN 203205577U
- Authority
- CN
- China
- Prior art keywords
- welding
- copper bar
- copper
- negative pole
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model discloses a partly welded and thickened structure for laminated busbar. According to the utility model, cooper plates are welded on areas of a part with low current-carrying capability of the laminated busbar, so that the welded copper plates and copper bars of the laminated busbar fit closely in a face-to-face manner. Then a tin soldering method is employed. The tin soldering method is adopted for partly thickening and belongs to low-temperature soldering. The copper bars are not easy to deform. Moreover, the junction surfaces of the welded copper bars and the copper bars are connected stably and reliably because soldering tin penetrates between the junction surfaces. Tin soldering is characterized by simple technology and good conductivity. In addition, there is no need thickening the whole copper plates through partly welding and thickening, which reduces cost of the busbar. The utility model is particularly suitable for welding and thickening in local small areas.
Description
Technical field
The utility model relates to a kind of laminated bus bars local welding structure thicker.
Background technology
Laminated bus bars, claim composite bus bar again, low-inductance bus, be that a kind of multi-layer compound structure connects row, have the high-power modular syndeton parts that can repeat characteristics such as electric property, Low ESR, anti-interference, good reliability, assembling be succinct, be widely used in electric power and mix the power conversion module etc. of traction, power switch system, electricity generation system, electrical equipment.
The current capacity of laminated bus bars depends on current-carrying cross section and the area of dissipation of copper bar, is specifically related to thickness and the busbar structure of copper bar.Laminated bus bars in actual applications, each regional current density difference of busbar, the busbar temperature rise is unbalanced, the high local current density of local temperature rise is higher, current capacity a little less than, if local temperature rise is too high, because the heat balance effect of busbar finally makes the temperature rise of whole busbar exceed designing requirement.
In order to strengthen the whole or local current capacity of stack bus bar, often by using thicker copper bar to solve, 1.5mm changes 2.0mm into as copper bar.Though can solve regional area current-carrying problem like this, the busbar cost rises.
Summary of the invention
The utility model purpose is to provide a kind of laminated bus bars local welding structure thicker, and it realizes the local welding thickening to laminated bus bars, reduces the busbar cost when solving the not enough problem of bus composition portion current-carrying.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of laminated bus bars local welding structure thicker, laminated bus bars comprises anodal copper bar, negative pole copper bar, intermediate insulating film and external insulation film, anodal copper bar, negative pole copper bar all adopt copper coin processing and connect by intermediate insulating film, external insulation film hot pressing, there is the not enough zone of local current-carrying on anodal copper bar, the negative pole copper bar, correspondence position in the not enough zone of local current-carrying is provided with the welding copper coin for the not enough zone of the local current-carrying of thickening, copper bar face and the face of welding copper coin and laminated bus bars fit tightly, and weld by soldering again.
For technique scheme, the inventor also has further optimization embodiment.
As optimization, DC input and IGBT pin on the side that the not enough zone of local current-carrying on anodal copper bar, the negative pole copper bar is anodal copper bar, negative pole copper bar, constitute on the anodal copper bar, negative pole copper bar of laminated bus bars and be equipped with DC welding copper coin and IGBT pin welding copper coin, DC welding copper coin and IGBT pin welding copper coin are located at respectively on the correspondence position of DC input and IGBT pin and by soldering and are welded.
Further, the structure of the DC input on DC welding copper coin and anodal copper bar, the negative pole copper bar is identical, and DC welding copper coin adopts the soldering welding with DC input end face and face stack back, and even infiltration DC welds between the binding face of copper coin and DC input after the melts soldering tin.
Further, the structure of the IGBT pin on IGBT pin welding copper coin and anodal copper bar, the negative pole copper bar is identical, the soldering welding is adopted in IGBT pin face on IGBT pin welding copper coin and anodal copper bar, the negative pole copper bar and face stack back, and melts soldering tin is also evenly infiltrated between the binding face of welding copper coin and both positive and negative polarity IGBT pin.
Laminated bus bars generally includes anodal copper bar, negative pole copper bar, intermediate insulating film, external insulation film, but not only only contains these several parts, the function of busbar, structure difference, contained part kind difference.The both positive and negative polarity copper bar separates by intermediate insulating film, reaches withstand voltage insulation purpose, and in the upper and lower surface of copper bar, the both positive and negative polarity copper bar is in aggregates by intermediate insulating film, external insulation film hot pressing respectively for the external insulation film.Often because of DC input and IGBT pin current-carrying deficiency, the user need be with DC input, IGBT pin (being used for connecting IGBT) the local welding thickening of anodal copper bar, negative pole copper bar, after to copper bar local welding thickening, again with dielectric film hot pressing together.
Than solution of the prior art, the utility model advantage is:
The utility model has been described a kind of laminated bus bars local welding structure thicker, regional area welding copper coin in local current-carrying deficiency, welding copper coin and copper bar face and face are fitted tightly, adopt the soldering welding then, the soldering mode is adopted in local thickening, belong to soldered, copper bar is not yielding and because scolding tin infiltrates between the binding face, the welding copper coin is connected reliable and stable with the copper bar faying face; Soldering technology is simple, and good conductivity.Local welding thickening in addition need not to thicken the full wafer copper bar, and the busbar cost reduces.The utility model especially is fit to local small size thickening and connects.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of the utility model embodiment;
Wherein: 1 treats local thickening copper bar; 2, DC positive-negative input end; 3, DC welding copper coin; 4, the positive and negative pin of IGBT; 5, IGBT pin welding copper coin.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment:
Present embodiment has been described a kind of laminated bus bars local welding structure thicker, the structure of laminated bus bars as shown in Figure 1, this bus row's work rated current less (rated current 250A), the both positive and negative polarity copper bar of laminated bus bars all adopts the pressing of 1.0mm copper coin, bus gets rid of DC positive-negative input end 2 and the current-carrying requirement can be satisfied in the positive and negative pin of IGBT 4 other outer zones, for positive and negative pin 4 current-carrying of DC positive-negative input end 2 and IGBT are met the demands, need to guarantee that this two places regional area copper bar thickness is 2.0mm, all adopt the processing of 2.0mm copper coin as the both positive and negative polarity copper bar, though can meet the demands but copper consumption doubles, cost increases.
Now in order to satisfy the current-carrying of the positive and negative pin 4 of DC positive-negative input end 2 and IGBT, the both positive and negative polarity copper bar still adopts the processing of 1.0mm copper coin simultaneously, needs DC both positive and negative polarity input 2, the positive and negative pin 4 of IGBT are thickeied to 2.0mm.
At first weld copper coin 3, IGBT pin welding copper coin 5 with reference to DC positive-negative input end 2 and the positive and negative pin 4 structures processing of IGBT DC, with DC positive-negative input end 2 and DC welding copper coin 3, the positive and negative pin 4 of IGBT and IGBT pin welding copper coin 5, face and face are superimposed to treats local thickening copper bar 1 surface, have good positioning, during soldering, melts soldering tin is also evenly infiltrated the welding copper coin and is treated the local binding face of thickening between the copper bar 1, progressively is cooled to normal temperature, finally obtains reliable and stable welding effect.Copper bar carries out surface treatment after thickening through local welding again, the bus row pressure is closed.
Can be according to bus row's current-carrying requirement during practical application, in the not enough zone of any current-carrying of laminated bus bars, the copper coin of welding different-thickness realizes that local thickening increases the current-carrying purpose.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All spirit essence is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (4)
1. laminated bus bars local welding structure thicker, laminated bus bars comprises anodal copper bar, negative pole copper bar, intermediate insulating film and external insulation film, anodal copper bar, negative pole copper bar all adopt copper coin processing and connect by intermediate insulating film, external insulation film hot pressing, it is characterized in that, there is the not enough zone of local current-carrying on anodal copper bar, the negative pole copper bar, correspondence position in the not enough zone of local current-carrying is provided with the welding copper coin for the not enough zone of the local current-carrying of thickening, copper bar face and the face of welding copper coin and laminated bus bars fit tightly, and weld by soldering again.
2. laminated bus bars local welding structure thicker according to claim 1, it is characterized in that, DC input and IGBT pin on the side that the not enough zone of local current-carrying on anodal copper bar, the negative pole copper bar is anodal copper bar, negative pole copper bar, constitute on the anodal copper bar, negative pole copper bar of laminated bus bars and be equipped with DC welding copper coin and IGBT pin welding copper coin, DC welding copper coin and IGBT pin welding copper coin are located at respectively on the correspondence position of DC input and IGBT pin and by soldering and are welded.
3. laminated bus bars local welding structure thicker according to claim 2, it is characterized in that, the structure of the DC input on DC welding copper coin and anodal copper bar, the negative pole copper bar is identical, the soldering welding is adopted in DC welding copper coin and DC input end face and face stack back, evenly infiltrates between the binding face of DC welding copper coin and DC input after the melts soldering tin.
4. laminated bus bars local welding structure thicker according to claim 2, it is characterized in that, the structure of the IGBT pin on IGBT pin welding copper coin and anodal copper bar, the negative pole copper bar is identical, the soldering welding is adopted in IGBT pin face on IGBT pin welding copper coin and anodal copper bar, the negative pole copper bar and face stack back, and melts soldering tin is also evenly infiltrated between the binding face of welding copper coin and both positive and negative polarity IGBT pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205782 CN203205577U (en) | 2013-04-22 | 2013-04-22 | Partly welded and thickened structure for laminated busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205782 CN203205577U (en) | 2013-04-22 | 2013-04-22 | Partly welded and thickened structure for laminated busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205577U true CN203205577U (en) | 2013-09-18 |
Family
ID=49149647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320205782 Expired - Fee Related CN203205577U (en) | 2013-04-22 | 2013-04-22 | Partly welded and thickened structure for laminated busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205577U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022414A (en) * | 2014-05-22 | 2014-09-03 | 苏州西典机电有限公司 | Novel laminated busbar |
| CN104167935A (en) * | 2014-09-04 | 2014-11-26 | 永济新时速电机电器有限责任公司 | Novel three-phase output compound busbar |
| CN104319010A (en) * | 2014-09-01 | 2015-01-28 | 浙江冠华电气有限公司 | Welding method of composite copper bar conducting layer, and composite copper bar |
| CN105081496A (en) * | 2015-07-22 | 2015-11-25 | 浙江赛英电力科技有限公司 | Novel copper block welding method |
| CN104167934B (en) * | 2014-09-04 | 2017-02-15 | 永济新时速电机电器有限责任公司 | Three-phase inversion composite busbar suitable for half-bridge module |
| US10064302B2 (en) | 2017-01-17 | 2018-08-28 | Caterpillar Inc. | Power inverter with balanced power flow for multiple electrical machines |
| CN109039098A (en) * | 2018-06-07 | 2018-12-18 | 德威(苏州)新能源有限公司 | A kind of efficient energy saving converter device |
-
2013
- 2013-04-22 CN CN 201320205782 patent/CN203205577U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022414A (en) * | 2014-05-22 | 2014-09-03 | 苏州西典机电有限公司 | Novel laminated busbar |
| CN104022414B (en) * | 2014-05-22 | 2016-08-31 | 苏州西典机电有限公司 | A kind of stack bus bar |
| CN104319010A (en) * | 2014-09-01 | 2015-01-28 | 浙江冠华电气有限公司 | Welding method of composite copper bar conducting layer, and composite copper bar |
| CN104319010B (en) * | 2014-09-01 | 2016-09-14 | 浙江冠华电气有限公司 | The welding method of a kind of composite copper bar conductive layer and composite copper bar |
| CN104167935A (en) * | 2014-09-04 | 2014-11-26 | 永济新时速电机电器有限责任公司 | Novel three-phase output compound busbar |
| CN104167935B (en) * | 2014-09-04 | 2016-08-31 | 永济新时速电机电器有限责任公司 | Three phase output composite bus bar |
| CN104167934B (en) * | 2014-09-04 | 2017-02-15 | 永济新时速电机电器有限责任公司 | Three-phase inversion composite busbar suitable for half-bridge module |
| CN105081496A (en) * | 2015-07-22 | 2015-11-25 | 浙江赛英电力科技有限公司 | Novel copper block welding method |
| US10064302B2 (en) | 2017-01-17 | 2018-08-28 | Caterpillar Inc. | Power inverter with balanced power flow for multiple electrical machines |
| CN109039098A (en) * | 2018-06-07 | 2018-12-18 | 德威(苏州)新能源有限公司 | A kind of efficient energy saving converter device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203205577U (en) | Partly welded and thickened structure for laminated busbar | |
| CN102882385B (en) | For laminated bus bar structure and the power inverter of three level power converter | |
| CN202384178U (en) | Capacitor structure with internal laminated bus bars | |
| CN103378748A (en) | Power supply unit and synchronous rectification module circuit board | |
| CN202513302U (en) | Copper-aluminum composite junction terminal for use in power transmission connection | |
| CN104966704A (en) | Low-thermal-resistance crimping-type power device package | |
| CN203482103U (en) | A laminated busbar used for connecting a DC capacitor busbar with IGBT power modules connected in parallel | |
| CN204030991U (en) | Be applicable to the three-phase inversion composite bus bar of half-bridge module | |
| CN104167934B (en) | Three-phase inversion composite busbar suitable for half-bridge module | |
| CN103560682A (en) | Power driving system | |
| CN207652320U (en) | A kind of IGBT module stack bus bar | |
| CN204068683U (en) | A kind of capacitance group of efficient low sense and install the power cell of this capacitance group | |
| CN204179927U (en) | A kind of DC-DC converter | |
| CN203352457U (en) | Power module unit of energy storage converter | |
| CN202018886U (en) | Composite film medium filter capacitor | |
| CN102339968B (en) | Connection structure and method for lugs of square power lithium batteries | |
| CN204792757U (en) | Crimping formula power device packagiing of low thermal resistance | |
| CN203787710U (en) | Laminated bus bar with flexible connection structure | |
| CN203415646U (en) | Pole plate type battery cell group series connection structure | |
| CN109672324A (en) | A kind of composite laminate busbar and its processing method | |
| CN206135728U (en) | Stromatolite is female to be arranged and power module | |
| CN202384423U (en) | Storage battery busbar | |
| CN204886721U (en) | Compound female arranging of rectification suitable for high -power electric locomotive power module | |
| CN104451798A (en) | Rectification and reversing module and high-frequency rectification power supply with output reversing function | |
| CN204325518U (en) | A kind of module and high-frequency rectification power supply with output commutation function of commutating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20180422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |