CN107331804A - A kind of electrokinetic cell, its sealing nail and its welding method - Google Patents
A kind of electrokinetic cell, its sealing nail and its welding method Download PDFInfo
- Publication number
- CN107331804A CN107331804A CN201710517849.XA CN201710517849A CN107331804A CN 107331804 A CN107331804 A CN 107331804A CN 201710517849 A CN201710517849 A CN 201710517849A CN 107331804 A CN107331804 A CN 107331804A
- Authority
- CN
- China
- Prior art keywords
- top cover
- sealing nail
- welding
- sealing
- nail
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 238000003466 welding Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 230000035515 penetration Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000013307 optical fiber Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention proposes a kind of electrokinetic cell, its sealing nail and its welding method, and sealing nail includes：Main body , Cheng Cone mesa-shaped；And flange, stretched out by the top of the main body is circumferentially outer.The welding method includes the main body for sealing nail being housed in the accepting groove at the liquid injection hole of the top cover of electrokinetic cell, the flange that the sealing is followed closely is ridden in the mounting surface with the top cover, sealing nail is combined with the top cover using laser fuU penetration welding.Welding efficiency can be greatly improved.
Description
Technical field
The present invention relates to the laser processing of laser processing, more particularly to electrokinetic cell.
Background technology
Referring to Fig. 1 to Fig. 3, design liquid injection hole would generally be reserved on the top cover 10 of single power battery as injection electrolyte
Entrance, and at liquid injection hole be provided with accepting groove.Wherein, liquid injection hole can correspond to insertion glue nail 20, and accepting groove can correspond to and house close
Envelope nail 30.Sealing nail 30 welds together with top cover 10.Existing sealing nail 30 is general in conoid type, the bottom surface of sealing nail 30
302 are used to coordinate with glue nail 20 provided with groove 303.The side 305 of sealing nail 30 is the conical surface, the tapered sidewalls with accepting groove
Coordinate.When in the accepting groove being installed on top cover 10 in place, sealing nail 30 can fill up the accepting groove, the top surface of sealing nail 30
301 is concordant with the top surface 101 of top cover 10.30 structures are followed closely in this sealing, and its welding position with top cover 10, is in sealing nail 30
Top surface 301 and top cover 10 top surface 101 circular bonding crack at, namely pad 40 is located at the side 305 of sealing nail 30
Top.
If carrying out butt welding using continuous wave laser, with the increase of heat input, remained in liquid injection hole
Electrolyte can decomposite gas in the presence of high energy laser beam, cause the sealed rear chamber body for adding glue nail 20 and sealing nail 30
Interior air pressure is too high, and easily combining closed place in circular weld joint head and the tail forms the quick-fried point of weld seam, causes sealing nail 30 closed not cause
Product defects.Therefore, the bond pattern of sealing nail 30 and top cover 10 is generally to carry out butt welding using pulse laser, such as
This one, due to seal to be ensured, speed of welding is less efficient typically within 3mm/s~8mm/s.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, proposes a kind of electrokinetic cell
Sealing nail and its welding method, can greatly improve welding efficiency.
The technical solution adopted for the present invention to solve the technical problems is：A kind of sealing nail of electrokinetic cell is provided, it is wrapped
Include：Main body , Cheng Cone mesa-shaped；And flange, stretched out by the top of the main body is circumferentially outer.
Wherein, the main body has top surface, bottom surface and the side of taper, and the wherein bottom surface is provided with groove.
The technical solution adopted for the present invention to solve the technical problems is still：A kind of electrokinetic cell is provided, including top cover and
Sealing nail；Wherein, sealing nail is as described above, the flange of sealing nail is combined with the top cover using laser fuU penetration welding.
The technical solution adopted for the present invention to solve the technical problems is still：A kind of weldering of the sealing nail of electrokinetic cell is provided
Method is connect, it includes：The main body of sealing nail as described above is housed in the accepting groove at the liquid injection hole of the top cover of electrokinetic cell
In, the flange that the sealing is followed closely is ridden in the mounting surface with the top cover, sealing nail and the top cover knot are made using laser fuU penetration welding
It is combined together.
Wherein, make welding track that there is lead-in and lead-out wire.
Wherein, before laser fuU penetration welding is implemented, the relative top cover positioning of sealing nail is first made using spot welding, then draw weldering
Integrate with the shape of mark.
Wherein, before the relative top cover positioning of sealing nail is made using spot welding, first using the receipts of the laser cleaning top cover
Tank position.
Wherein, described laser fuU penetration welding is made to use 1KW optical fiber laser.
Wherein, the changed power scope for making described optical fiber laser is 700W~1000W.
Wherein, the velocity interval for making described optical fiber laser is 50mm/s~80mm/s；Make described optical fiber laser
Defocusing amount scope be 0mm~+2mm.
The beneficial effects of the present invention are seal the structure of nail by improving, increase flange, and then the welding that will seal nail
Mode is changed to penetrate welding, not only to positioning accuracy request reduction, greatly improves production efficiency；In addition, penetrating welding manner phase
For butt welding mode, adaptability is stronger, can greatly avoid sealing nail and quick-fried phenomenon at the sealing of top cover, greatly improve
Yields.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the schematic perspective view of existing sealing nail；
Fig. 2 is the fit structure schematic diagram of existing sealing nail and top cover；
Fig. 3 is existing sealing nail and the design sketch of top cover butt welding；
Fig. 4 is the schematic perspective view of present invention sealing nail；
Fig. 5 is the fit structure schematic diagram of present invention sealing nail and top cover；
Fig. 6 is the exploded perspective view of present invention sealing nail and the fit structure of top cover；
Fig. 7 is the welding track that present invention sealing nail penetrates weldering with top cover；
Fig. 8 is the design sketch that present invention sealing nail penetrates weldering with top cover.
Wherein, Main Reference Numerals are as follows：The glue of 10 top cover, 101 top surface, 103 liquid injection hole, 105 accepting groove 20 nail 30 is sealed
Follow closely the welding track 501 of the side of 301 top surface, 302 bottom surface, 303 groove 305 306 main body, 307 flange, 40 solder joint 50 and introduce line
502 lead-out wires.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
Referring to Fig. 4, Fig. 4 is the schematic perspective view of present invention sealing nail.The present invention proposes a kind of electrokinetic cell, and it includes close
Envelope nail 30, sealing nail 30 includes：Main body 306 and flange 307.Wherein, the main body 306 and the structure of the sealing nail shown in Fig. 1
Similar , Cheng Cone mesa-shaped, the side 305 with top surface 301, bottom surface 302 and taper, bottom surface 302 is provided with groove 303.The flange
307 are circumferentially stretched out outside on the top of the main body 306.
With reference to referring to Fig. 5 and Fig. 6, Fig. 5 is the fit structure schematic diagram of present invention sealing nail and top cover；Fig. 6 is the present invention
The exploded perspective view of sealing nail and the fit structure of top cover.Sealing nail 30 is attached to one with top cover 10 using laser fuU penetration welding
Rise.Wherein, in liquid injection hole 103 of the correspondence plug of glue nail 20 on the top cover 10.The main body 306 correspondence is housed in the receipts on top cover 10
In tank 105.The flange 307 is ridden on the top surface 101 of the top cover 10.Top surface of the top surface above the top cover 10 of sealing nail 30
One setting height, the setting height is the thickness of the flange 307.
With reference to referring to Fig. 7 and Fig. 8, Fig. 7 is the welding track that present invention sealing nail penetrates weldering with top cover；Fig. 8 is the present invention
Sealing nail penetrates the design sketch of weldering with top cover.Sealing nail 30 is penetrated into the process together with being soldered to top cover 10 includes：First, via
After the injection electrolyte of liquid injection hole 103, glue nail 20 is filled at once prevents dust from entering；Then, with laser cleaning accepting groove 105
Put, with the electrolyte that removes residual, (due to being to implement laser penetration welding mode in the outside of accepting groove 105, the step is simultaneously
Necessarily)；Then, the installing of sealing nail 30 in place, first spot welding fixing seal nail 30, prevents from tilting in welding process, general point
Weld three points；Then, the shape of welding track is drawn on welding control software, welding track 50, which has, to be introduced line 501 and draw
Outlet 502, i.e. welding track 50 are in α shapes；Finally, laser fuU penetration welding is implemented.Welding can be prevented effectively from using bond pattern is penetrated
Without cleaning after perforated phenomenon and injection electrolyte, welding yield can be greatly promoted.
It is noted that welding condition preferably uses higher speed, positive out of focus 2mm.For example：Using 1KW
Optical fiber laser when, technological parameter：Changed power scope be 700W~1000W, velocity interval be 50mm/s~80mm/s, from
Jiao's amount scope is 0mm~+2mm.
The beneficial effects of the present invention are by improving sealing 30 structures of nail, increase flange 307, and then will seal nail 30
Welding manner be changed to penetrate welding, not only to positioning accuracy request reduction, and production efficiency can be greatly improved；In addition,
Welding manner is penetrated relative to butt welding mode, adaptability is stronger, can greatly avoid the sealing of sealing nail 30 and top cover 10
Locate quick-fried phenomenon, greatly improve yields.
It is noted that in the present embodiment, the flange 307 of sealing nail 30 is the top surface 101 for riding over the top cover 10
On, that is to say, that the top cover 10 is the mounting surface using top surface 101 as the flange 307 for overlapping sealing nail 30, so as to show
Appearance of the top surface 301 higher than the top surface 101 of top cover 10 of sealing nail 30.In other embodiments, can be by the top cover 10
Mounting surface opposing top 101 recessed one be sized, so as to the top of the top surface 301 and the top cover 10 that show sealing nail 30
The appearance of the flush of face 101, it might even be possible to be outward appearance effect of the top surface 301 less than the top surface 101 of top cover 10 of sealing nail 30
Really.In addition, in the present embodiment, the combination between the flange 307 of sealing nail 30 and the top surface 101 of the top cover 10 is two water
Overlap joint between plane；In other embodiments, the combination between the flange 307 of sealing nail 30 and the faying surface of the top cover 10
Two horizontal planes are need not necessarily be limited to, such as：Can be two inclined-planes for having certain inclination angle (such as 10 degree)；Again such as：Can be
Two male and fomale(M＆F)s or curved surface cooperated.
It should be appreciated that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
For field technique personnel, the technical scheme described in above-described embodiment can be modified, or it is special to which part technology
Levy carry out equivalent substitution；And these modifications and replacement, it should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of sealing nail of electrokinetic cell, it is characterised in that including：Main body , Cheng Cone mesa-shaped；And flange, by the top of the main body
End is circumferentially outer to be stretched out.
2. sealing nail according to claim 1, it is characterised in that：The main body has top surface, bottom surface and the side of taper, its
In the bottom surface be provided with groove.
3. a kind of electrokinetic cell, including top cover and sealing are followed closely；Characterized in that, sealing nail is as claimed in claim 1 or 2, should
The flange of sealing nail is combined with the top cover using laser fuU penetration welding.
4. a kind of welding method of the sealing nail of electrokinetic cell, it is characterised in that including：Will be as claimed in claim 1 or 2 close
The main body of envelope nail is housed in the accepting groove at the liquid injection hole of the top cover of electrokinetic cell, the flange that the sealing is followed closely is ridden over and the top
In the mounting surface of lid, sealing nail is set to be combined with the top cover using laser fuU penetration welding.
5. method according to claim 4, it is characterised in that：Make welding track that there is lead-in and lead-out wire.
6. method according to claim 5, it is characterised in that：Before laser fuU penetration welding is implemented, this is first made using spot welding
The relative top cover positioning of sealing nail, then draw the shape of welding track.
7. method according to claim 6, it is characterised in that：The relative top cover of sealing nail is set to position it using spot welding
Before, first using the collecting groove location of the laser cleaning top cover.
8. the method according to any one of claim 4 to 7, it is characterised in that：Make described laser fuU penetration welding using 1KW's
Optical fiber laser.
9. method according to claim 8, it is characterised in that：The changed power scope for making described optical fiber laser is
700W~1000W.
10. method according to claim 8, it is characterised in that：The velocity interval for making described optical fiber laser is 50mm/
S~80mm/s；The defocusing amount scope for making described optical fiber laser is 0mm~+2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517849.XA CN107331804A (en) | 2017-06-29 | 2017-06-29 | A kind of electrokinetic cell, its sealing nail and its welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517849.XA CN107331804A (en) | 2017-06-29 | 2017-06-29 | A kind of electrokinetic cell, its sealing nail and its welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107331804A true CN107331804A (en) | 2017-11-07 |
Family
ID=60198504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517849.XA Pending CN107331804A (en) | 2017-06-29 | 2017-06-29 | A kind of electrokinetic cell, its sealing nail and its welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107331804A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953029A (en) * | 2017-12-29 | 2018-04-24 | 大族激光科技产业集团股份有限公司 | Welder and welding method |
| CN108054308A (en) * | 2017-12-04 | 2018-05-18 | 东软集团股份有限公司 | The installed part and assembling assembly of high-pressure insert |
| CN109037582A (en) * | 2018-08-01 | 2018-12-18 | 武汉逸飞激光设备有限公司 | Method of completing the square is bound in a kind of sealing |
| CN111037098A (en) * | 2019-12-27 | 2020-04-21 | 芜湖天弋能源科技有限公司 | Method for repairing various welding seam defects of laser welding of power battery sealing nail |
| CN112207438A (en) * | 2020-09-30 | 2021-01-12 | 珠海冠宇电池股份有限公司 | Welding assembly and welding method |
| CN112510327A (en) * | 2020-12-22 | 2021-03-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Power battery and sealing method thereof |
| CN113695737A (en) * | 2021-07-14 | 2021-11-26 | 武汉逸飞激光股份有限公司 | Welding method for sealing nail of power battery |
| CN114074220A (en) * | 2020-08-20 | 2022-02-22 | 大族激光科技产业集团股份有限公司 | Laser welding method for power battery and sealing nail thereof |
| CN114147348A (en) * | 2021-12-23 | 2022-03-08 | 深圳市海目星激光智能装备股份有限公司 | Laser welding method for sealing nail |
| CN114932314A (en) * | 2022-06-01 | 2022-08-23 | 武汉逸飞激光股份有限公司 | Laser welding method for sealing nail |
| WO2022262351A1 (en) * | 2021-06-15 | 2022-12-22 | 宁德时代新能源科技股份有限公司 | Cleaning apparatus, battery cell, electrical device and battery cell processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020004168A1 (en) * | 1998-09-11 | 2002-01-10 | Mikio Iwata | Battery having electrolyte injecting plug |
| JP2008041548A (en) * | 2006-08-09 | 2008-02-21 | Sanyo Electric Co Ltd | Nonaqueous electrolyte secondary battery |
| CN102376932A (en) * | 2010-08-06 | 2012-03-14 | 日立麦克赛尔能源株式会社 | Sealed battery |
| CN203918232U (en) * | 2014-06-16 | 2014-11-05 | 浙江金开来新能源科技有限公司 | A kind of laser penetration water-tight equipment of lithium battery |
| CN204809306U (en) * | 2015-07-15 | 2015-11-25 | 宁德时代新能源科技有限公司 | Secondary cell's notes liquid hole weld assembly |
-
2017
- 2017-06-29 CN CN201710517849.XA patent/CN107331804A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020004168A1 (en) * | 1998-09-11 | 2002-01-10 | Mikio Iwata | Battery having electrolyte injecting plug |
| JP2008041548A (en) * | 2006-08-09 | 2008-02-21 | Sanyo Electric Co Ltd | Nonaqueous electrolyte secondary battery |
| CN102376932A (en) * | 2010-08-06 | 2012-03-14 | 日立麦克赛尔能源株式会社 | Sealed battery |
| CN203918232U (en) * | 2014-06-16 | 2014-11-05 | 浙江金开来新能源科技有限公司 | A kind of laser penetration water-tight equipment of lithium battery |
| CN204809306U (en) * | 2015-07-15 | 2015-11-25 | 宁德时代新能源科技有限公司 | Secondary cell's notes liquid hole weld assembly |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054308A (en) * | 2017-12-04 | 2018-05-18 | 东软集团股份有限公司 | The installed part and assembling assembly of high-pressure insert |
| CN107953029A (en) * | 2017-12-29 | 2018-04-24 | 大族激光科技产业集团股份有限公司 | Welder and welding method |
| CN109037582A (en) * | 2018-08-01 | 2018-12-18 | 武汉逸飞激光设备有限公司 | Method of completing the square is bound in a kind of sealing |
| CN111037098A (en) * | 2019-12-27 | 2020-04-21 | 芜湖天弋能源科技有限公司 | Method for repairing various welding seam defects of laser welding of power battery sealing nail |
| CN114074220A (en) * | 2020-08-20 | 2022-02-22 | 大族激光科技产业集团股份有限公司 | Laser welding method for power battery and sealing nail thereof |
| CN112207438A (en) * | 2020-09-30 | 2021-01-12 | 珠海冠宇电池股份有限公司 | Welding assembly and welding method |
| CN112510327A (en) * | 2020-12-22 | 2021-03-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Power battery and sealing method thereof |
| WO2022262351A1 (en) * | 2021-06-15 | 2022-12-22 | 宁德时代新能源科技股份有限公司 | Cleaning apparatus, battery cell, electrical device and battery cell processing method |
| CN113695737A (en) * | 2021-07-14 | 2021-11-26 | 武汉逸飞激光股份有限公司 | Welding method for sealing nail of power battery |
| CN114147348A (en) * | 2021-12-23 | 2022-03-08 | 深圳市海目星激光智能装备股份有限公司 | Laser welding method for sealing nail |
| CN114932314A (en) * | 2022-06-01 | 2022-08-23 | 武汉逸飞激光股份有限公司 | Laser welding method for sealing nail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107331804A (en) | A kind of electrokinetic cell, its sealing nail and its welding method | |
| CN103801833B (en) | A kind of slab narrow gap laser light welding with filler wire method | |
| CN101972884B (en) | Automatic welding method of nuclear island main pipes | |
| CN104011896B (en) | Battery case and manufacture method thereof | |
| CN102896407B (en) | Tube sheet welding joint process | |
| CN109382584B (en) | Laser welding system and method for battery cover plate | |
| RU2012139838A (en) | METHOD AND DEVICE FOR HYBRID WELDING WITH LOTS OF HEAT SOURCES | |
| CN101947700A (en) | Groove for automatic welding of nuclear power station and automatic welding method | |
| CN103817448A (en) | Gas shielding device for titanium alloy laser-MIG (metal inert gas welding) hybrid welding | |
| CN109175746A (en) | A kind of manufacturing process of vacuum heat-preserving titanium cup | |
| CN109483055A (en) | A kind of battery core connection sheet welding mechanism and its welding method | |
| CN109773311A (en) | A kind of horizontal abutment joint single side buried arc welding method | |
| CN103537788A (en) | Method for welding thin-walled cylinder with magnet sleeved inside in seal housing component | |
| CN103769756A (en) | Ultrasonic-assisted underwater wet welding method | |
| CN106624320A (en) | Method for electron beam welding of hollow flat tube type parts | |
| CN102581498A (en) | Welding device for combining ultrasonic focusing sound field with non-melt pole by electric arc welding | |
| CN108526693A (en) | A kind of laser welding with filler wire method of power battery module end plate and side plate | |
| CN206422104U (en) | Cap assembly, secondary cell and laser welding system | |
| CN217513104U (en) | Coaxial blowing and sucking nozzle for laser welding | |
| CN106392325A (en) | Laser welding method for stainless steel thick-wall pressure container | |
| CN213158749U (en) | Ultrasonic welding fuse structure | |
| CN206029007U (en) | Electron -beam welding connects lap joint structure | |
| CN107498177A (en) | Non-penetration laser welding method and system | |
| CN205414701U (en) | Welding system of brush seal robot based on super acoustic detection | |
| CN204792951U (en) | Power type arc -welding block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |