CN106271079A - A kind of dual wavelength complex welding method in battery liquid-filling hole - Google Patents
A kind of dual wavelength complex welding method in battery liquid-filling hole Download PDFInfo
- Publication number
- CN106271079A CN106271079A CN201610728138.2A CN201610728138A CN106271079A CN 106271079 A CN106271079 A CN 106271079A CN 201610728138 A CN201610728138 A CN 201610728138A CN 106271079 A CN106271079 A CN 106271079A
- Authority
- CN
- China
- Prior art keywords
- laser
- filling hole
- battery liquid
- wave band
- dual wavelength
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 57
- 230000009977 dual effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000008393 encapsulating agent Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000006798 recombination Effects 0.000 claims abstract description 12
- 238000005215 recombination Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 4
- 229910000679 solder Inorganic materials 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 230000002085 persistent effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 239000003566 sealing material Substances 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 239000002131 composite material Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 150000002829 nitrogen Chemical class 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 229910001334 3003 aluminium alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses the dual wavelength complex welding method in a kind of battery liquid-filling hole; the method is under a shielding gas; the encapsulant in battery liquid-filling hole is welded by the dual wavelength recombination laser that main wave band and time wave band are compound; wherein; main wave band of laser carries out molten solder to the encapsulant in battery liquid-filling hole; secondary wave band of laser preheats and increases material molten state duration to the encapsulant of liquid injection hole, and completes the welding in battery liquid-filling hole at high speeds.The present invention greatly improves the welding efficiency in battery liquid-filling hole, postwelding surface flawless defect, reduces pore probability, and welding bead smooth surface even uniform greatly.
Description
[technical field]
The present invention relates to technical field of laser processing, particularly to the dual wavelength complex welding method in a kind of battery liquid-filling hole.
[background technology]
Lithium battery is the new generation of green high-energy battery that performance is remarkable, because it has high voltage, high power capacity, low consumption, memoryless
The features such as effect, nuisanceless, volume is little, internal resistance is little, self discharge is few, cycle-index is many.And be widely used in pure electric automobile, mix
Close power set, plug-in hybrid-power automobile and boats and ships, track traffic, solar energy, wind generator system, mobile phone,
Notebook computers etc. are numerous civilian and military field.Especially with the development of electric automobile, the requirement to lithium battery performance is got over
Come the highest.
Lithium battery in the fabrication process, when injecting after electrolyte in battery case, owing to needing to maintain stablizing of electrolyte
Need aluminium nail to be welded on the liquid injection port of lithium battery and by housing seal.At present, lithium battery manufacturer generally uses laser by aluminum
Nail welding is sealed against at the liquid injection hole of lithium battery, and liquid injection hole welds one of critical process as battery manufacture to be needed to carry out
Laser cleaning, enter to follow closely, position, weld and the multiple working procedure such as detection.Such as Fig. 1, shown in Fig. 2, existing laser welding mostly uses
The method for laser welding of Single wavelength, use the method welding after, easily produce pore or crackle in welding position, welding bead surface because of
Motlten metal solidifies formation multiple tracks segmentation ripple rapidly and affects the uniformity on welding bead surface.Deposited for welding liquid injection hole at present
Problem, the commonly used pulse laser containing Energy Feedback System of domestic and international producer improves drawbacks described above.But improve
Limited extent cause production efficiency low and the ripple of face of weld can affect subsequent detection.
[summary of the invention]
In sum, the purpose that the present invention is main is to solve existing lithium battery liquid injection port welding employing Single wavelength and containing
The pulse laser of Energy Feedback System carries out welding and causing welding position easily to produce pore or crackle, and welding bead surface
Form segmentation ripple and affect the technical problem of welding bead surface uniformity, and the dual wavelength Combined Welding in a kind of battery liquid-filling hole is provided
Connect method.
In order to solve above-mentioned technical problem, the present invention provides the dual wavelength complex welding method in a kind of battery liquid-filling hole, should
Method is under a shielding gas, compound sharp by the dual wavelength that main wave band and time wave band are compound to the encapsulant in battery liquid-filling hole
Light welds, wherein, secondary wave band of laser the encapsulant of liquid injection hole is preheated and increase material molten state continue time
Between, main wave band of laser carries out molten solder to the encapsulant of liquid injection hole, and completes at a high speed liquid injection hole welding.
Described dual-wavelength laser bundle composite welding is to be welded by multiwavelength laser plumb joint.
Described dual wavelength recombination laser forms for being integrated by main wave band of laser and time wave band of laser, and it is for carrying out aluminium
Processing.
The wavelength of described main wave band of laser is 1070nm, and its laser power is 780W, and speed of welding is 100mm/s.
The wavelength of described wave band of laser is 915nm, and its semiconductor power is 900W, and speed of welding is 100mm/s.
Described protective gas is nitrogen, and this nitrogen welds at focal point.
Described encapsulant is aluminium alloy.
Use technique scheme, compared with prior art, have the beneficial effects that produced by the present invention: be double by using
Aluminium nail is welded on the liquid injection hole of lithium battery by wavelength composite welding process, and dual wavelength recombination laser is by two wave bands, power
Different laser shapings forms.By using this welding manner, greatly improve welding efficiency and the welding matter in battery liquid-filling hole
Amount, postwelding surface of shell flawless, greatly reduce the probability that pore occurs, and welding bead smooth surface even uniform, have
Preferably safety.
[accompanying drawing explanation]
Fig. 1 is the external structure schematic diagram after using the welding of existing Single wavelength pulse laser；
Fig. 2 is the internal structure schematic diagram after using the welding of existing Single wavelength pulse laser；
Fig. 3 is the external structure schematic diagram after dual wavelength composite welding of the present invention；
Fig. 4 is the internal structure schematic diagram after dual wavelength composite welding of the present invention.
[detailed description of the invention]
The following example is the present invention to be explained further and supplements, and the present invention will not be constituted any restriction.
The inventive point of the dual wavelength complex welding method in battery liquid-filling hole of the present invention is: under a shielding gas, to battery
The encapsulant of liquid injection hole welds by the way of dual wavelength recombination laser, and described dual wavelength recombination laser bundle is by double
Wavelength laser plumb joint is launched.In the present embodiment, described protective gas is nitrogen.This nitrogen welds at focal point and uses
In improving weldquality and avoiding encapsulant to aoxidize.In the present embodiment, described encapsulant uses 3003 aluminium alloys.Enter one
Step ground, described dual wavelength recombination laser is the recombination laser of the laser shaping by two different-waveband different capacities.Enter one
Step ground, described dual wavelength recombination laser includes main wave band of laser and secondary wave band of laser.Wherein, main wave band of laser is to battery liquid-filling hole
Encapsulant carry out molten solder, the encapsulant of liquid injection hole is preheated and increases material molten state by secondary wave band of laser
Persistent period, and complete the welding in battery liquid-filling hole at high speeds.Preferably, the wavelength of described main wave band of laser is
1070nm, its laser power is 780W, and speed of welding is 100mm/s.Preferably, the wavelength of described wave band of laser is 915nm,
Its semiconductor power is 900W, and speed of welding is 100mm/s.Such as Fig. 3, shown in Fig. 4, by using the work of dual wavelength composite welding
After skill, the speed of dual wavelength welding maintains 100mm/s, and speed of welding is relatively stable, is therefore come by the external structure after welding
Seeing, the smooth in appearance of liquid injection hole is smooth, and welding bead surface is fine and smooth uniformly.From the point of view of internal structure after welding, dual wavelength welds not
See face crack and internal porosity.After using this welding procedure, electrolyte outwards will not be oozed out by the welding position of liquid injection hole, because of
This has more preferable safety.
Although being disclosed the present invention by above example, but the scope of the present invention is not limited thereto,
Under conditions of present inventive concept, above each component can come with the similar or equivalent element that art personnel understand
Replace.
Claims (7)
1. the dual wavelength complex welding method in a battery liquid-filling hole, it is characterised in that the method is under a shielding gas, to electricity
The encapsulant of pond liquid injection hole is welded by the dual wavelength recombination laser being combined by main wave band of laser and time wave band of laser, its
In, main wave band of laser carries out molten solder, the secondary wave band of laser encapsulant to liquid injection hole to the encapsulant in battery liquid-filling hole
Carry out preheating and increase the encapsulant molten condition persistent period, and complete the welding in battery liquid-filling hole at high speeds.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 1, it is characterised in that described dual wavelength
Recombination laser is launched by dual-wavelength laser plumb joint.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 2, it is characterised in that described dual wavelength
Recombination laser is the recombination laser different with the wavelength of time wave band laser shaping and power by main wave band of laser.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 3, it is characterised in that described main wave band
The wavelength of laser is 1070nm, and its laser power is 780W, and speed of welding is 100mm/s.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 3, it is characterised in that described wave band
The wavelength of laser is 915nm, and its semiconductor power is 900W, and speed of welding is 100mm/s.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 1, it is characterised in that described protection gas
Body is nitrogen, and this protective gas welds at focal point.
The dual wavelength complex welding method in battery liquid-filling hole the most according to claim 1, it is characterised in that described sealing material
Material is aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728138.2A CN106271079A (en) | 2016-08-26 | 2016-08-26 | A kind of dual wavelength complex welding method in battery liquid-filling hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728138.2A CN106271079A (en) | 2016-08-26 | 2016-08-26 | A kind of dual wavelength complex welding method in battery liquid-filling hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106271079A true CN106271079A (en) | 2017-01-04 |
Family
ID=57677256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610728138.2A Pending CN106271079A (en) | 2016-08-26 | 2016-08-26 | A kind of dual wavelength complex welding method in battery liquid-filling hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106271079A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044236A (en) * | 2017-11-03 | 2018-05-18 | 大族激光科技产业集团股份有限公司 | A kind of method of laser welding |
| CN109093259A (en) * | 2017-06-21 | 2018-12-28 | 深圳市联赢激光股份有限公司 | A kind of compound wire feed welding method of dual wavelength |
| CN109483055A (en) * | 2018-12-28 | 2019-03-19 | 东莞塔菲尔新能源科技有限公司 | A kind of battery core connection sheet welding mechanism and its welding method |
| CN112676702A (en) * | 2020-11-19 | 2021-04-20 | 武汉凌云光电科技有限责任公司 | Method and equipment for precise micro-welding of nonferrous metal by composite dual-wavelength |
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|---|---|---|---|---|
| WO2004007136A2 (en) * | 2002-07-11 | 2004-01-22 | Commissariat A L'energie Atomique | System and method of machining objects using a laser |
| US20080230525A1 (en) * | 2007-03-21 | 2008-09-25 | Photon Dynamics, Inc. | Laser ablation using multiple wavelengths |
| CN101733553A (en) * | 2008-11-21 | 2010-06-16 | 中国第一汽车集团公司 | Laser welding method for metal part by dual-wavelength dual laser beam |
| CN103182604A (en) * | 2013-03-12 | 2013-07-03 | 镭射谷科技(深圳)有限公司 | Laser hybrid welding method and system |
| CN104681419A (en) * | 2013-12-03 | 2015-06-03 | 国际商业机器公司 | Apparatus And Method For Laser Heating And Ion Implantation |
-
2016
- 2016-08-26 CN CN201610728138.2A patent/CN106271079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004007136A2 (en) * | 2002-07-11 | 2004-01-22 | Commissariat A L'energie Atomique | System and method of machining objects using a laser |
| US20080230525A1 (en) * | 2007-03-21 | 2008-09-25 | Photon Dynamics, Inc. | Laser ablation using multiple wavelengths |
| CN101733553A (en) * | 2008-11-21 | 2010-06-16 | 中国第一汽车集团公司 | Laser welding method for metal part by dual-wavelength dual laser beam |
| CN103182604A (en) * | 2013-03-12 | 2013-07-03 | 镭射谷科技(深圳)有限公司 | Laser hybrid welding method and system |
| CN104681419A (en) * | 2013-12-03 | 2015-06-03 | 国际商业机器公司 | Apparatus And Method For Laser Heating And Ion Implantation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093259A (en) * | 2017-06-21 | 2018-12-28 | 深圳市联赢激光股份有限公司 | A kind of compound wire feed welding method of dual wavelength |
| CN108044236A (en) * | 2017-11-03 | 2018-05-18 | 大族激光科技产业集团股份有限公司 | A kind of method of laser welding |
| CN108044236B (en) * | 2017-11-03 | 2020-04-10 | 大族激光科技产业集团股份有限公司 | Laser welding method |
| CN109483055A (en) * | 2018-12-28 | 2019-03-19 | 东莞塔菲尔新能源科技有限公司 | A kind of battery core connection sheet welding mechanism and its welding method |
| CN109483055B (en) * | 2018-12-28 | 2024-04-26 | 江苏正力新能电池技术有限公司 | Welding mechanism and welding method for battery cell connecting sheet |
| CN112676702A (en) * | 2020-11-19 | 2021-04-20 | 武汉凌云光电科技有限责任公司 | Method and equipment for precise micro-welding of nonferrous metal by composite dual-wavelength |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Hang Inventor after: Xu Huan Inventor after: Han Jinlong Inventor before: Zhou Hang Inventor before: Wang Qiao Inventor before: Han Jinlong |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |