CN113427095A - Laser welding method for tabs - Google Patents
Laser welding method for tabs Download PDFInfo
- Publication number
- CN113427095A CN113427095A CN202110607254.XA CN202110607254A CN113427095A CN 113427095 A CN113427095 A CN 113427095A CN 202110607254 A CN202110607254 A CN 202110607254A CN 113427095 A CN113427095 A CN 113427095A
- Authority
- CN
- China
- Prior art keywords
- foil
- tab
- laser welding
- welding
- welded
- 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
Images
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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laser Beam Processing (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention belongs to the technical field of welding, and particularly relates to a tab laser welding method, which comprises the following steps: step (A): unreeling the tab sheet; step (B): placing the unreeled tab piece on a base; step (C): placing a tab piece on one surface of the foil to be welded and tightly attaching the tab piece to the foil to be welded, and recording the overlapping area of the tab piece and the foil to be welded as a welding area; step (D): sealing and attaching the contact edges of the lug plates and the foil by using a sealant to form a weldment; a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser. The tab laser welding method provided by the invention can solve the problems of molten drop splashing, sealed weld joint and smooth and flat welding surface without splashing particles.
Description
Technical Field
The invention belongs to the technical field of welding, and particularly relates to a tab laser welding method.
Background
In the manufacturing process of the lithium battery cell, tab welding is one of indispensable and very important processes, ultrasonic welding is currently used on a large scale, and a laser welding process is also developed by lithium battery companies. Compared with ultrasonic welding, laser welding has the following advantages:
a) the time for changing the model is short: the welding head and the welding seat are not needed, the laser parameters are changed only by changing the model, the time for frequently changing the welding head and the welding seat in ultrasonic welding is greatly shortened, and the manufacturing capacity is improved;
b) the welding quality is excellent: the control stability of laser welding is good, the welding tension stability is better, the welding height is low, and the safety quality is high;
c) the service life is long: the laser service life is > 10 years, while the ultrasonic welding horn holder has a service life of 6 ten thousand times (about one week).
The existing laser welding process is mature day by day, but a relatively difficult process difficulty restricts the popularization of the process, the process difficulty is that molten drops splash, the splashed particles are welding material aluminum, if the splashed metal aluminum on the surface of a pole piece is not cleared away in time, the safety risk of short circuit of a battery cell is caused by serious residue, and the K value of the battery cell is also caused by slight residue.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the method for welding the lug by laser can solve the problems of molten drop splashing, sealed welding line and smooth and flat welding surface without splashing particles.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tab laser welding method comprises the following steps:
step (A): unreeling the tab sheet;
step (B): placing the unreeled tab piece on a base;
step (C): placing a tab piece on one surface of the foil to be welded and tightly attaching the tab piece to the foil to be welded, and recording the overlapping area of the tab piece and the foil to be welded as a welding area;
step (D): sealing and attaching the polar lug plate and the contact edge of the foil to be welded by using a sealant to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
As an improvement of the tab laser welding method of the present invention, a step (D1) is further provided between the step (D) and the step (E): and detecting the sealant attached to the surface of the weldment by using a detection device. The detection device detects the difference of sealing of the sealant, and checks whether the sealant is completely attached to the contact edge of the antipodal lug and the foil to be welded or not and whether a missing place exists or not.
As an improvement of the tab laser welding method of the present invention, the detection device is an industrial camera. Preferably, an area-array camera is used.
As an improvement of the tab laser welding method, the material of the foil to be welded is one of aluminum foil, copper foil and tin foil, and the thickness of the foil to be welded is 8-20 μm. The foil to be welded has good ductility and can be formed to a thin thickness, preferably 10 to 20 μm, further 10 to 15 μm, and may be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, or 20 μm.
As an improvement of the tab laser welding method, the thickness of the tab piece is 80-150 mu m. The thickness of the pole ear piece is 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm. The too thick of utmost point auricle is unfavorable for carrying out laser welding with the foil, and the thickness of utmost point auricle is too thin, damages easily at the in-process of welding, punctures.
As an improvement of the laser welding method for the electrode lug, the diameter of a welding spot of the laser welding in the step (E) is 0.8-1 mm. The diameter of the welding spot can be 0.8mm, 0.9mm and 1 mm.
As an improvement of the laser welding method for the tab, the distance between welding spots in the laser welding in the step (E) is 2-8 mm. The spacing between welding points of laser welding can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm and 8 mm.
As an improvement of the tab laser welding method, the length of a welding line for laser welding in the step (E) is 10-16 mm. The weld line length for laser welding may be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16 mm.
As an improvement of the tab laser welding method of the present invention, the sealing attachment in step (D) is performed by flat-tap attachment rubberizing.
As an improvement of the tab laser welding method, the pressure of the flat-pat gluing and rubberizing is 0.1-0.3 MPa. The pressure of the flat-pat gluing adhesive is 0.1MPa, 0.2MPa and 0.3 MPa.
Compared with the prior art, the invention has the beneficial effects that: according to the tab laser welding method, the contact edges of the tab pieces and the foil are sealed and attached through the sealant, so that the tab pieces and the foil in a welding area to be welded are tightly attached, seamless welding can be realized, molten drop splashing is avoided, a welding seam is sealed, and a welding surface is smooth and flat and has no splashing particles.
Drawings
FIG. 1 is a schematic view of the welding of the pole tab to the foil of the present invention.
FIG. 2 is a weldment having a weld face with spatter particles after laser welding using prior art techniques.
Wherein: 1. a polar tab; 2. foil to be welded; 3. and (7) sealing the glue.
Detailed Description
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and jointing the contact edges of the pole lug pieces 1 and the foil 2 to be welded by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
The flow chart of the prior art laser welding is that before welding, a lug and a foil 2 to be welded are overlapped, but because the lug or the foil 2 to be welded is uneven, a gap can exist between the lug and the foil, during welding, laser is opposite to a welding area for laser heating, black body radiation is carried out, metal in a weldment is molten, the volume is enlarged, partially gasified metal overflows through a small hole, when cold air expansion is met, after a molten pool penetrates through the foil, air expansion between the foil and the lug is carried out, the molten pool is extruded, so that a molten drop splashing phenomenon occurs, splashing particles occur on the plane of the weldment, and the product performance is influenced. As shown in fig. 2, spatter particles appear on the surface of the weldment, and the white particles in the figure are molten bead spatters of metallic aluminum. According to the tab laser welding method, the contact edges of the tab pieces 1 and the foil are sealed and attached through the sealant 3, so that the tab pieces 1 and the foil in a welding area to be welded are tightly attached, as shown in figure 1, seamless welding can be realized, molten drop splashing is avoided, a welding seam is sealed, and a welding surface is smooth and flat and has no splashing particles.
Preferably, a step (D1) is further provided between the step (D) and the step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device. The detection device detects the difference of the sealing glue 3, and checks whether the sealing glue 3 is completely attached to the contact edge of the antipodal lug 1 and the foil 2 to be welded or not and whether a missing place exists or not.
Preferably, the detection device is an industrial camera. More preferably, an area-array camera is used.
Preferably, the material of the foil 2 to be welded is one of an aluminum foil, a copper foil and a tin foil, and the thickness of the foil 2 to be welded is 8-20 μm. The foil 2 to be welded has good ductility and can be formed to a thin thickness, preferably 10 to 20 μm thick, further 10 to 15 μm thick, and may be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, or 20 μm thick.
Preferably, the thickness of the pole ear piece 1 is 80-150 μm. The thickness of the pole piece 1 is 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm. The too thick of utmost point auricle 1 is unfavorable for carrying out laser welding with the foil, and the thickness of utmost point auricle 1 is too thin, damages easily at the welded in-process, punctures.
Preferably, the diameter of the welding spot of the laser welding in the step (E) is 0.8-1 mm. The diameter of the welding spot can be 0.8mm, 0.9mm and 1 mm.
Preferably, the distance between welding spots in the laser welding in the step (E) is 2-8 mm. The spacing between welding points of laser welding can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm and 8 mm.
Preferably, the length of the welding line for laser welding in the step (E) is 10-16 mm. The weld line length for laser welding may be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16 mm.
Preferably, the sealing and fitting manner in the step (D) is a flat-tap fitting rubberizing.
Preferably, the pressure of the flat-pat gluing and rubberizing is 0.1-0.3 MPa. The pressure of the flat-pat gluing adhesive is 0.1MPa, 0.2MPa and 0.3 MPa.
The present invention will be described in further detail with reference to the following detailed description and the accompanying drawings, but the embodiments of the invention are not limited thereto.
Example 1
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and jointing the contact edges of the pole lug pieces 1 and the foil 2 to be welded by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
The flow chart of the prior art laser welding is that before welding, a lug and a foil are overlapped, but because the lug or the foil is uneven, a gap exists between the lug and the foil, during welding, laser is subjected to laser heating towards a welding area, black body radiation is performed, metal in a weldment is melted, the volume is enlarged, partially gasified metal overflows through a small hole, when cold air expansion is met, a molten pool penetrates through the foil, air expansion between the foil and the lug is realized, the molten pool is extruded, the phenomenon that molten drops splash appears, and splashed particles appear on the plane of the weldment, so that the product performance is influenced. As shown in fig. 2, spatter particles appear on the surface of the weldment, and the white particles in the figure are molten bead spatters of metallic aluminum. According to the tab laser welding method, the contact edges of the tab pieces 1 and the foil are sealed and attached through the sealant 3, so that the tab pieces 1 and the foil in a welding area to be welded are tightly attached, as shown in figure 1, seamless welding can be realized, molten drop splashing is avoided, a welding seam is sealed, and a welding surface is smooth and flat and has no splashing particles.
Wherein, step (D1) is also provided between step (D) and step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device.
Wherein the detection device is an industrial camera.
The foil 2 to be welded is made of aluminum foil, and the thickness of the foil 2 to be welded is 8 microns.
Wherein the thickness of the pole tab 1 is 80 μm.
Wherein, the diameter of the welding spot of the laser welding in the step (E) is 0.8 mm.
Wherein, the welding spot interval of the laser welding in the step (E) is 2 mm.
Wherein the length of the welding line for laser welding in the step (E) is 10 mm.
And (D) sealing and attaching in a flat-shooting attaching adhesive tape.
Wherein, the pressure of the flat-pat gluing and rubberizing is 0.1 MPa.
Example 2
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and jointing the contact edges of the pole lug pieces 1 and the foil 2 to be welded by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
Wherein, step (D1) is also provided between step (D) and step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device.
Wherein the detection device is an industrial camera.
Wherein the foil is made of copper foil, and the thickness of the foil is 10 micrometers.
Wherein the thickness of the pole tab 1 is 100 μm.
Wherein, the diameter of the welding spot of the laser welding in the step (E) is 0.9 mm.
Wherein, the welding spot interval of the laser welding in the step (E) is 4 mm.
Wherein the length of the welding line for laser welding in the step (E) is 12 mm.
And (D) sealing and attaching in a flat-shooting attaching adhesive tape.
Wherein, the pressure of the flat-pat gluing and rubberizing is 0.2 MPa.
Example 3
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and attaching the contact edges of the pole lug pieces 1 and the foil by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
Wherein, step (D1) is also provided between step (D) and step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device.
Wherein the detection device is an industrial camera.
Wherein the foil is made of tinfoil, and the thickness of the foil is 15 microns.
Wherein the thickness of the pole tab 1 is 120 μm.
Wherein, the diameter of the welding spot of the laser welding in the step (E) is 0.85 mm.
Wherein, the welding spot interval of the laser welding in the step (E) is 4 mm.
Wherein the length of the welding line of the laser welding in the step (E) is 14 mm.
And (D) sealing and attaching in a flat-shooting attaching adhesive tape.
Wherein, the pressure of the flat-pat gluing and rubberizing is 0.2 MPa.
Example 4
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and jointing the contact edges of the pole lug pieces 1 and the foil 2 to be welded by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
Wherein, step (D1) is also provided between step (D) and step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device.
Wherein the detection device is an industrial camera.
Wherein the foil is made of tinfoil, and the thickness of the foil is 16 microns.
Wherein, the thickness of the pole ear piece 1 is 80-150 μm.
Wherein, the diameter of the welding spot of the laser welding in the step (E) is 0.9 mm.
Wherein, the welding spot interval of the laser welding in the step (E) is 6 mm.
Wherein the length of the welding line of the laser welding in the step (E) is 14 mm.
And (D) sealing and attaching in a flat-shooting attaching adhesive tape.
Wherein, the pressure of the flat-pat gluing and rubberizing is 0.2 MPa.
Example 5
A tab laser welding method comprises the following steps:
step (A): unreeling the lug piece 1;
step (B): placing the unreeled tab sheet 1 on a base;
step (C): placing the polar lug 1 on one surface of the foil 2 to be welded and tightly attaching the polar lug 1 to the foil 2 to be welded, and recording the overlapping area of the polar lug 1 and the foil 2 to be welded as a welding area;
step (D): sealing and jointing the contact edges of the pole lug pieces 1 and the foil 2 to be welded by using a sealant 3 to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
Wherein, step (D1) is also provided between step (D) and step (E): and detecting the sealant 3 attached to the surface of the weldment by using a detection device.
Wherein the detection device is an industrial camera.
Wherein the foil is made of copper foil, and the thickness of the foil is 20 microns.
Wherein the thickness of the pole tab 1 is 150 μm.
Wherein, the diameter of the welding spot of the laser welding in the step (E) is 1 mm.
Wherein, the welding spot spacing of the laser welding in the step (E) is 8 mm.
Wherein the length of the welding line of the laser welding in the step (E) is 16 mm.
And (D) sealing and attaching in a flat-shooting attaching adhesive tape.
Wherein, the pressure of the flat-pat gluing and rubberizing is 0.3 MPa.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A tab laser welding method is characterized in that: the method comprises the following steps:
step (A): unreeling the tab sheet;
step (B): placing the unreeled tab piece on a base;
step (C): placing a tab piece on one surface of the foil to be welded and tightly attaching the tab piece to the foil to be welded, and recording the overlapping area of the tab piece and the foil to be welded as a welding area;
step (D): sealing and attaching the polar lug plate and the contact edge of the foil to be welded by using a sealant to form a weldment;
a step (E): and horizontally turning the weldment in situ, and performing laser welding on a welding area of the weldment by using laser.
2. The tab laser welding method according to claim 1, characterized in that: a step (D1) is also arranged between the step (D) and the step (E): and detecting the sealant attached to the surface of the weldment by using a detection device.
3. The tab laser welding method according to claim 2, characterized in that: the detection device is an industrial camera.
4. The tab laser welding method according to claim 1, characterized in that: the material of the foil to be welded is one of aluminum foil, copper foil and tin foil, and the thickness of the foil to be welded is 8-20 microns.
5. The tab laser welding method according to claim 1, characterized in that: the thickness of the pole lug piece is 80-150 mu m.
6. The tab laser welding method according to claim 1, characterized in that: and (E) the diameter of a welding spot of the laser welding in the step (E) is 0.8-1 mm.
7. The tab laser welding method according to claim 1, characterized in that: and (E) welding spot spacing of laser welding is 2-8 mm.
8. The tab laser welding method according to claim 1, characterized in that: and (E) the length of the welding wire for laser welding in the step (E) is 10-16 mm.
9. The tab laser welding method according to claim 1, characterized in that: and (D) sealing and gluing in the step (D).
10. The tab laser welding method according to claim 9, wherein: the pressure of the flat-pat gluing and rubberizing is 0.1-0.3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607254.XA CN113427095A (en) | 2021-06-01 | 2021-06-01 | Laser welding method for tabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607254.XA CN113427095A (en) | 2021-06-01 | 2021-06-01 | Laser welding method for tabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113427095A true CN113427095A (en) | 2021-09-24 |
Family
ID=77803361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110607254.XA Pending CN113427095A (en) | 2021-06-01 | 2021-06-01 | Laser welding method for tabs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113427095A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081468A (en) * | 2006-05-31 | 2007-12-05 | 广东山峰化工机械有限公司 | Vacuum stitch welding method |
| JP2009130338A (en) * | 2007-11-28 | 2009-06-11 | Elna Co Ltd | Connection method for tab terminal to aluminum electrode foil, aluminum electrolytic capacitor, and solid electrolytic capacitor |
| CN203150631U (en) * | 2013-01-23 | 2013-08-21 | 东莞新能源科技有限公司 | Flexible packaging lithium ion battery |
| CN104625406A (en) * | 2014-12-15 | 2015-05-20 | 湖北三江航天红阳机电有限公司 | Adsorption clamping equipment for framework covering laser welding and method achieved through adsorption clamping equipment |
| CN105364296A (en) * | 2015-11-18 | 2016-03-02 | 宁波金橙新能源有限公司 | Welding method and device of lithium battery electrode lug |
| CN108465933A (en) * | 2018-02-13 | 2018-08-31 | 深圳吉阳智能科技有限公司 | A kind of method and apparatus of laser welding foil and lug |
| CN211920382U (en) * | 2020-02-25 | 2020-11-13 | 苏州杰锐思智能科技股份有限公司 | Glue preparing device and glue pasting equipment |
-
2021
- 2021-06-01 CN CN202110607254.XA patent/CN113427095A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081468A (en) * | 2006-05-31 | 2007-12-05 | 广东山峰化工机械有限公司 | Vacuum stitch welding method |
| JP2009130338A (en) * | 2007-11-28 | 2009-06-11 | Elna Co Ltd | Connection method for tab terminal to aluminum electrode foil, aluminum electrolytic capacitor, and solid electrolytic capacitor |
| CN203150631U (en) * | 2013-01-23 | 2013-08-21 | 东莞新能源科技有限公司 | Flexible packaging lithium ion battery |
| CN104625406A (en) * | 2014-12-15 | 2015-05-20 | 湖北三江航天红阳机电有限公司 | Adsorption clamping equipment for framework covering laser welding and method achieved through adsorption clamping equipment |
| CN105364296A (en) * | 2015-11-18 | 2016-03-02 | 宁波金橙新能源有限公司 | Welding method and device of lithium battery electrode lug |
| CN108465933A (en) * | 2018-02-13 | 2018-08-31 | 深圳吉阳智能科技有限公司 | A kind of method and apparatus of laser welding foil and lug |
| CN211920382U (en) * | 2020-02-25 | 2020-11-13 | 苏州杰锐思智能科技股份有限公司 | Glue preparing device and glue pasting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209786103U (en) | Secondary battery | |
| CN100587999C (en) | Enclosed-type battery manufacturing method and enclosed-type battery | |
| JP2016030280A (en) | Method and apparatus for laser welding of metal foil | |
| US6646221B2 (en) | Method for repairing resistance spot welds in aluminum sheet materials | |
| CN107234329A (en) | A kind of pole ear welding method of soft pack cell | |
| CN112652865A (en) | Battery and battery manufacturing method | |
| CN114094289A (en) | Tab welding process and battery | |
| JP2923621B2 (en) | Sealed battery sealing welding method | |
| CN215869464U (en) | Pole piece assembly and battery | |
| CN112045307B (en) | Laser welding method for soft package lithium ion power battery tab | |
| CN215418352U (en) | Welding structure of steel shell button cell and button cell | |
| CN113427095A (en) | Laser welding method for tabs | |
| CN211879492U (en) | Power battery | |
| CN100438125C (en) | Welding method for lid and shell mouth of top welding lithium ion battery | |
| CN115070207A (en) | Battery cover plate welding method | |
| CN113488745A (en) | Laser welding process for positive pole lug of soft package lithium ion power battery | |
| CN112570833A (en) | Solar photovoltaic module junction box welding pressing tool and using method | |
| CN219393642U (en) | Battery and battery pack | |
| CN115194278B (en) | Sealing brazing method and brazing system | |
| KR100435038B1 (en) | Method for forming cathode terminal of Lithium ion secondary battery | |
| JP2008142722A (en) | Resistance welding method of metal thin sheet and metal foil, and method for producing nonaqueous secondary battery using the same | |
| CN116315478A (en) | Technological method for processing tab easy-to-fold area and lithium ion battery | |
| CN113751906A (en) | Lug welding method, battery core lug and battery | |
| CN216288558U (en) | Battery pack and processing tool | |
| CN220739779U (en) | Small-space high-cleanliness high-melting-point copper medium resistance welding structure |
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 |
Application publication date: 20210924 |
|
| RJ01 | Rejection of invention patent application after publication |