CN112975130A - Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab - Google Patents
Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab Download PDFInfo
- Publication number
- CN112975130A CN112975130A CN202110266365.9A CN202110266365A CN112975130A CN 112975130 A CN112975130 A CN 112975130A CN 202110266365 A CN202110266365 A CN 202110266365A CN 112975130 A CN112975130 A CN 112975130A
- Authority
- CN
- China
- Prior art keywords
- welding
- nickel
- copper
- aluminum alloy
- layer
- 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 147
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 63
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 55
- 239000010949 copper Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 29
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- 229910000570 Cupronickel Inorganic materials 0.000 title claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000004069 differentiation Effects 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 12
- 238000004021 metal welding Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000956 alloy Substances 0.000 description 4
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/044—Seam tracking
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of dissimilar metal welding, in particular to a welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab, which sequentially comprises the following steps: selecting a group of sample pieces to be welded, wherein the sample pieces comprise an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer; step two, cleaning the sample, and then stacking and fixing an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer from top to bottom in sequence; step three, editing a welding track curve: differentiating a straight track curve into a sine curve, and performing curve differentiation on the sine curve again to form a welding track curve; welding the sample piece according to the welding track curve by adopting a laser welding device; and step five, detecting the welded sample piece. Welding is carried out according to the welding track curve, the crack occurrence rate and the false welding rate can be effectively reduced, welding defects are avoided, the tensile strength of the welded sample piece is increased, and the welding performance is guaranteed.
Description
Technical Field
The invention relates to the technical field of dissimilar metal welding, in particular to a welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab.
Background
The copper alloy has the advantages of good processing performance, wear resistance, corrosion resistance and the like, and the aluminum alloy has the advantages of light weight, corrosion resistance and the like, and is widely applied to the lithium battery tab at present. However, the aluminum alloy has poor welding performance, a compact aluminum oxide film is easily formed to adsorb moisture, and weld cracks are caused, while the copper alloy is difficult to fuse, easy to deform, easy to generate air holes, very easy to generate eutectic substances with low melting point, and has the defects of heat cracks and the like.
At present, a YAG (yttrium aluminum garnet) pulse laser is generally used for welding an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer in a lithium battery tab. YAG pulse laser has large light spot, heat at a focus is not concentrated like a single-mode laser, production efficiency is low, cracks are easy to generate in a welding seam, crystal grains are large, and the tensile and shear resistance of the welding joint is seriously affected. Therefore, a new welding process of aluminum alloy, copper alloy and nickel-plated copper for the lithium battery tab is needed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab, which can reduce welding defects and improve welding performance so as to overcome the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: a welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab sequentially comprises the following steps: selecting a group of sample pieces to be welded, wherein the sample pieces comprise an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer; step two, cleaning the sample, and then stacking and fixing an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer from top to bottom in sequence; step three, editing a welding track curve: differentiating a straight track curve into a sine curve, and performing curve differentiation on the sine curve again to form a welding track curve; welding the sample piece according to the welding track curve by adopting a laser welding device; and step five, detecting the welded sample piece.
Preferably, in the step one, the thickness of the aluminum alloy layer is 0.2mm-0.3mm, the thickness of the copper alloy layer is 0.2mm-0.3mm, and the thickness of the nickel-plated copper layer is 3mm-4 mm.
Preferably, in the second step, the bonding surfaces of the aluminum alloy layer, the copper alloy layer and the nickel-plated copper layer and the surfaces to be welded are wiped and cleaned by using absolute alcohol.
Preferably, in the second step, a gap between the aluminum alloy layer and the bonding surface of the copper alloy layer and a gap between the copper alloy layer and the bonding surface of the nickel-plated copper layer are not more than 0.1 mm.
Preferably, in step three, the period of the sinusoid is 7mm to 9mm and the amplitude is 1.3mm to 1.5 mm.
Preferably, in step three, the dissimilarity period of the sinusoidal curve recurve dissimilarity is 0.3mm-0.4mm, and the dissimilarity amplitude is 0.1mm-0.2 mm.
Preferably, in the fourth step, the welding laser power during welding is 1210W-1410W.
Preferably, in step four, the laser power of the laser welding apparatus is increased from 0W to the welding laser power within 0.5 seconds at the start of welding, and then the welding laser power is maintained until the end of welding.
Preferably, in step four, the welding parameters of the laser welding device are as follows: the diameter of a light spot is 0.02mm-0.04mm, the nitrogen flow is 15L/min-20L/min, the defocusing amount is +1 mm-3 mm, and the welding speed is 350mm/s-450 mm/s.
Preferably, in step four, the temperature of the back surface of the sample during welding does not exceed 260 ℃.
Compared with the prior art, the invention has the remarkable progress that:
according to the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab, the linear track curve is differentiated into the sine curve, the sine curve is further differentiated into the welding track curve, and welding is performed according to the welding track curve, so that the crack occurrence rate and the insufficient welding rate can be effectively reduced, the welding defect is avoided, the tensile strength of a sample piece after welding is increased, and the welding performance is ensured.
Drawings
FIG. 1 is a schematic diagram of sample pieces and welding positions in a welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab according to an embodiment of the invention.
FIG. 2 is a schematic diagram of a welding track curve in the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to the embodiment of the invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Wherein the reference numerals are as follows:
1 aluminium alloy layer
2 copper alloy layer
3 plating nickel copper layer
4 weld seam
Curve of 5 welding trace
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 3, one embodiment of the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the tab of the lithium battery according to the present invention. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab sequentially comprises the following steps.
Step one, selecting a group of sample pieces to be welded, wherein the sample pieces comprise an aluminum alloy layer 1, a copper alloy layer 2 and a nickel-plated copper layer 3. Specifically, an aluminum alloy material, a copper alloy material and a nickel-plated copper material with proper marks, sizes and specifications are selected to be used as an aluminum alloy layer 1, a copper alloy layer 2 and a nickel-plated copper layer 3 to be welded in the manufacturing of a lithium battery tab respectively. Preferably, the thickness of the aluminum alloy layer 1 is 0.2mm to 0.3mm, the thickness of the copper alloy layer 2 is 0.2mm to 0.3mm, and the thickness of the nickel-plated copper layer 3 is 3mm to 4 mm. Preferably, the specification of the nickel-plated copper material of the nickel-plated copper layer 3 is T2 red copper nickel plating, and the grade of the nickel is N6.
And step two, before welding, cleaning the sample piece, preferably, wiping and cleaning the joint surfaces of the aluminum alloy layer 1, the copper alloy layer 2 and the nickel-plated copper layer 3 and the surface to be welded by adopting absolute alcohol, and removing oil stains on the surface to ensure the performance of the welded product. Then, as shown in fig. 1, the aluminum alloy layer 1, the copper alloy layer 2 and the nickel-plated copper layer 3 are stacked and fixed in this order from the top, that is, the aluminum alloy layer 1 is placed on the upper surface of the copper alloy layer 2, and the copper alloy layer 2 is placed on the upper surface of the nickel-plated copper layer 3. The attaching surface of the sample piece comprises the lower surface of the aluminum alloy layer 1, the upper surface of the copper alloy layer 2, the lower surface of the copper alloy layer 2 and the upper surface of the nickel-plated copper layer 3, and the surface to be welded of the sample piece is the upper surface of the aluminum alloy layer 1. Impurities cannot be left among the alloy layers when the alloy layers are stacked. The stacked sample pieces can be fixed by a clamp, and the aluminum alloy layer 1 and the copper alloy layer 2 are pressed and fixed on the nickel-plated copper layer 3 by applying pressure by the clamp. The form of the jig is not limited, and an existing jig, for example, an existing PLC-controlled special jig such as a copper cup, may be used to press and fix the aluminum alloy layer 1 and the copper alloy layer 2 to the nickel-plated copper layer 3 by applying a force of 20N to 30N. Preferably, after the sample pieces are stacked and fixed, the gap between the joint surfaces of the aluminum alloy layer 1 and the copper alloy layer 2 and the gap between the joint surfaces of the copper alloy layer 2 and the nickel-plated copper layer 3 are not larger than 0.1mm, so that welding defects such as cracks and insufficient solder can be avoided, and the welding performance can be ensured. After the sample pieces are stacked and fixed, the welding position on the sample pieces is determined, and as shown in fig. 1, the position of the welding seam 4 is the welding position.
Step three, editing a welding track curve, wherein the editing method comprises the following steps: firstly, a straight track is edited, then the curve of the straight track is differentiated into a sine curve, and the curve of the sine curve is differentiated again to form a welding track curve 5, as shown in fig. 2 and 3. When the straight track curve is changed into a sine curve, the cycle of the sine curve is preferably 7mm-9mm, and the amplitude of the sine curve is preferably 1.3mm-1.5 mm. The re-curve dissimilarity of the sine curve means that the lines of the sine curve are dissimilarity into the sine curve again (see fig. 3), and preferably, the dissimilarity period of the re-curve dissimilarity of the sine curve is 0.3mm-0.4mm and the dissimilarity amplitude is 0.1mm-0.2 mm. The resulting weld trace curve 5 is shown in fig. 2. Welding is carried out according to the welding track curve 5, so that the crack occurrence rate and the false welding rate can be effectively reduced, the welding defect is avoided, the tensile strength of the welded sample piece is increased, and the welding performance is ensured.
And step four, welding the welding position on the stacked and fixed sample piece by adopting a laser welding device according to a welding track curve 5. The laser welding apparatus is a conventional apparatus, and can perform laser welding using a conventional two-axis servo-mounted laser galvanometer system, for example. Preferably, the laser used by the laser welding device is a single-mode laser, so that the welding speed can be increased, the production efficiency and the production qualification rate are effectively improved, and the production cost is saved. One type of laser that may be used with the laser welding apparatus is MFSC-2000C-BJW 3.0. Preferably, the temperature of the back surface of the sample piece during welding does not exceed 260 ℃ so as not to influence the tensile strength of the sample piece after welding.
Preferably, the welding laser power during welding is 1210W-1410W, so as to avoid generating welding defects such as cracks and cold joints and ensure the welding performance.
Preferably, at the start of welding, the laser power of the laser welding apparatus is increased from 0W to the required welding laser power within 0.5 seconds, and then the welding laser power is maintained until the end of welding, which is the end of the weld of one welding, is completed. Therefore, the performance of the initial position of the welding seam and the quality of the welding seam can be effectively improved.
Preferably, the welding parameters of the laser welding device during welding are as follows: the diameter of a light spot is 0.02mm-0.04mm, the nitrogen flow is 15L/min-20L/min, the defocusing amount is +1 mm-3 mm, and the welding speed is 350mm/s-450 mm/s. The best weld quality can thus be achieved.
And step five, detecting the welded sample piece. Observing the surface of the welding seam by using a microscope, and detecting whether the cold joint and the surface crack of the welding seam exist or not; and detecting the tensile strength of the welded sample piece by using a universal testing machine, wherein the tensile strength of the welded sample piece is more than 1500N, and the tensile strength of the welded sample piece is more than 2020N in actual operation.
Next, the welding effect of the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab of the present embodiment was examined and verified through tests.
In the first test, the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab of the embodiment is adopted, 10 groups of sample pieces to be welded are sequentially welded according to the steps, and the detection results after welding are shown in table 1 below.
TABLE 1 test results of test one
Therefore, by adopting the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab, the welding qualification rate is 100%, the welding quality can be greatly guaranteed, the production efficiency is effectively improved, and the production cost is reduced.
And secondly, testing the condition that the gap between the binding surfaces of the aluminum alloy layer 1 and the copper alloy layer 2 and the gap between the binding surfaces of the copper alloy layer 2 and the nickel-plated copper layer 3 are larger than 0.1mm, wherein the testing gap values are 0.12mm, 0.14mm, 0.16mm and 0.18mm, each gap value is respectively subjected to 10 groups of tests, except the gap values, other parameters and operation processes in each group of tests are the same as those in the first test, and the detection results are shown in the following table 2.
TABLE 2 test results of test two
It can be seen that when the gap between the faying surfaces of the aluminum alloy layer 1 and the copper alloy layer 2 and the gap between the faying surfaces of the copper alloy layer 2 and the nickel-plated copper layer 3 are greater than 0.1mm, the conditions of weld crack, cold joint and unqualified tensile strength of the welded sample piece can occur, and the occurrence probability of various defects tends to increase along with the increase of the gap between the faying surfaces. Therefore, the gap between the bonding surfaces of the aluminum alloy layer 1 and the copper alloy layer 2 and the gap between the bonding surfaces of the copper alloy layer 2 and the nickel-plated copper layer 3 are controlled within 0.1mm, so that welding defects such as cracks, insufficient welding, unqualified tensile strength and the like can be avoided, and the welding performance is ensured to be qualified.
And thirdly, testing the welding laser power during welding out of the range of 1210W-1410W, wherein the welding laser power of the test is 1150W, 1180W, 1210W, 1250W, 1290W, 1330W, 1370W, 1410W, 1440W and 1470W, 10 groups of tests are respectively carried out on each welding laser power value, the rest parameters and the operation process except the welding laser power value in each group of tests are the same as those of the first test, and the detection results are shown in the following table 3.
TABLE 3 test results of test three
Therefore, when the welding laser power is lower than 1210W, cold joint can occur, so that the tensile strength is influenced, and the tensile strength of the welded sample piece is unqualified; when the welding laser power is higher than 1410W, cracks can appear on the welding seam, and the temperature of the back of the sample piece can exceed 260 ℃ during welding, so that the tensile strength is influenced, and the tensile strength of the welded sample piece is unqualified. And the welding laser power is controlled within the range of 1210W-1410W, so that the welding defects of cracks, cold solder, unqualified temperature and tensile strength of the back surface of the sample piece during welding and the like can be avoided, and the welding performance is ensured to be qualified.
In conclusion, by adopting the welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab, the welding defects can be reduced, the welding speed of the tab is improved, the production efficiency is improved, the production cost is reduced, and the customer requirements are met.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A welding process of aluminum alloy, copper alloy and nickel-plated copper for a lithium battery tab is characterized by sequentially comprising the following steps of:
selecting a group of sample pieces to be welded, wherein the sample pieces comprise an aluminum alloy layer, a copper alloy layer and a nickel-plated copper layer;
step two, cleaning the sample piece, and then stacking and fixing the aluminum alloy layer, the copper alloy layer and the nickel-plated copper layer from top to bottom in sequence;
step three, editing a welding track curve: differentiating a straight track curve into a sine curve, and performing curve differentiation on the sine curve again to form a welding track curve;
welding the sample piece according to the welding track curve by adopting a laser welding device;
and step five, detecting the welded sample piece.
2. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the first step, the thickness of the aluminum alloy layer is 0.2mm to 0.3mm, the thickness of the copper alloy layer is 0.2mm to 0.3mm, and the thickness of the nickel-plated copper layer is 3mm to 4 mm.
3. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the second step, the bonding surfaces of the aluminum alloy layer, the copper alloy layer and the nickel-plated copper layer and the surfaces to be welded are wiped and cleaned with absolute alcohol.
4. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the second step, a gap between the aluminum alloy layer and the joint surface of the copper alloy layer and a gap between the copper alloy layer and the joint surface of the nickel-plated copper layer are not greater than 0.1 mm.
5. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the third step, the period of the sine curve is 7mm to 9mm, and the amplitude is 1.3mm to 1.5 mm.
6. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the third step, the dissimilarity period of the sinusoidal re-curvilinear dissimilarity is 0.3mm to 0.4mm, and the dissimilarity amplitude is 0.1mm to 0.2 mm.
7. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the fourth step, the welding laser power during welding is 1210W-1410W.
8. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the fourth step, the laser power of the laser welding device is increased from 0W to the welding laser power within 0.5 seconds at the start of welding, and then the welding laser power is maintained until the end of welding.
9. The welding process of the aluminum alloy, the copper alloy and the nickel-plated copper for the lithium battery tab according to claim 1, wherein in the fourth step, the welding parameters of the laser welding device are as follows: the diameter of a light spot is 0.02mm-0.04mm, the nitrogen flow is 15L/min-20L/min, the defocusing amount is +1 mm-3 mm, and the welding speed is 350mm/s-450 mm/s.
10. The process of claim 1 wherein in step four, the temperature of the back surface of the sample piece during welding does not exceed 260 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266365.9A CN112975130A (en) | 2021-03-11 | 2021-03-11 | Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266365.9A CN112975130A (en) | 2021-03-11 | 2021-03-11 | Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112975130A true CN112975130A (en) | 2021-06-18 |
Family
ID=76334946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110266365.9A Pending CN112975130A (en) | 2021-03-11 | 2021-03-11 | Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112975130A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399827A (en) * | 2021-06-21 | 2021-09-17 | 远景动力技术(江苏)有限公司 | Laser welding method and device for multilayer tab and bus piece and lithium battery |
| CN113878234A (en) * | 2021-09-28 | 2022-01-04 | 远景动力技术(江苏)有限公司 | Laser welding method and device for double-layer tab and lithium battery |
| CN114289869A (en) * | 2022-01-07 | 2022-04-08 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2454810A1 (en) * | 2003-03-10 | 2004-09-10 | Illinois Tool Works Inc. | Removable panels for a welding-type machine enclosure |
| CN104626543A (en) * | 2015-01-12 | 2015-05-20 | 中国科学院宁波材料技术与工程研究所 | Welding method for thermoplastic composite material |
| CN106583926A (en) * | 2015-10-15 | 2017-04-26 | 通用汽车环球科技运作有限责任公司 | Laser beam welding with a spiral weld path having a first order of continuity |
| CN109554703A (en) * | 2017-09-25 | 2019-04-02 | 通用电气公司 | The method and turbo blade for being used to form the method for product, being used to form turbo blade |
| CN110170744A (en) * | 2018-02-20 | 2019-08-27 | 双叶产业株式会社 | Joint method |
| CN212587848U (en) * | 2020-07-30 | 2021-02-23 | 大族激光科技产业集团股份有限公司 | Laser device |
| CN112439994A (en) * | 2020-11-17 | 2021-03-05 | 上海思客琦自动化工程有限公司 | Laser welding process for dissimilar metal connecting material at lithium battery tab part |
-
2021
- 2021-03-11 CN CN202110266365.9A patent/CN112975130A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2454810A1 (en) * | 2003-03-10 | 2004-09-10 | Illinois Tool Works Inc. | Removable panels for a welding-type machine enclosure |
| CN104626543A (en) * | 2015-01-12 | 2015-05-20 | 中国科学院宁波材料技术与工程研究所 | Welding method for thermoplastic composite material |
| CN106583926A (en) * | 2015-10-15 | 2017-04-26 | 通用汽车环球科技运作有限责任公司 | Laser beam welding with a spiral weld path having a first order of continuity |
| CN109554703A (en) * | 2017-09-25 | 2019-04-02 | 通用电气公司 | The method and turbo blade for being used to form the method for product, being used to form turbo blade |
| CN110170744A (en) * | 2018-02-20 | 2019-08-27 | 双叶产业株式会社 | Joint method |
| CN212587848U (en) * | 2020-07-30 | 2021-02-23 | 大族激光科技产业集团股份有限公司 | Laser device |
| CN112439994A (en) * | 2020-11-17 | 2021-03-05 | 上海思客琦自动化工程有限公司 | Laser welding process for dissimilar metal connecting material at lithium battery tab part |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399827A (en) * | 2021-06-21 | 2021-09-17 | 远景动力技术(江苏)有限公司 | Laser welding method and device for multilayer tab and bus piece and lithium battery |
| CN113878234A (en) * | 2021-09-28 | 2022-01-04 | 远景动力技术(江苏)有限公司 | Laser welding method and device for double-layer tab and lithium battery |
| CN114289869A (en) * | 2022-01-07 | 2022-04-08 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
| CN114289869B (en) * | 2022-01-07 | 2023-10-27 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112975130A (en) | Welding process of aluminum alloy, copper alloy and nickel-plated copper for lithium battery tab | |
| JP4072558B2 (en) | Joined body of steel and aluminum, and spot welding method thereof | |
| US20190076948A1 (en) | Welded, Laminated Apparatus, Methods of Making, and Methods of Using the Apparatus | |
| US9272361B2 (en) | Method for joining metal materials | |
| CN113020790A (en) | Welding process of double-layer aluminum alloy and nickel-plated copper for lithium battery tab | |
| CN103447668B (en) | A kind of welding method of dispersion copper | |
| CN101143402A (en) | Screw plunger welding composite connecting method for adhesive joint repair | |
| CN1166490C (en) | Method of repairing defect of metallic member using embedded mending welding | |
| JP4627400B2 (en) | Aluminum / nickel clad and battery external terminals | |
| CN113909610A (en) | High-performance brazing method for third-generation single crystal high-temperature alloy | |
| CN114558886A (en) | Preparation method of copper-aluminum composite plate strip with composite side edge | |
| CN101992331A (en) | Vacuum brazing process for super-Ni laminated material and Cr18-Ni8 stainless steel | |
| CN111468857B (en) | Composite solder and preparation method and application thereof | |
| CN115194278B (en) | Sealing brazing method and brazing system | |
| CN105618882A (en) | Packaging method for soldered joint | |
| CN110142495A (en) | A kind of titanium-aluminium alloy electro-beam welding method reducing base material dilution rate | |
| CN112743250B (en) | Non-standard H-shaped steel manufacturing method and special tool | |
| CN107931806A (en) | A kind of Mo Re alloys foil micro-plasma arc welding connects method | |
| CN108637449B (en) | Cu-Slug ultrasonic welding process | |
| CN111618588A (en) | Method for welding tab of soft-packaged battery cell | |
| CN112059388A (en) | Method and device for monitoring welding quality of bimetal band saw blade | |
| CN108672967A (en) | A kind of welding method of novel rust-proofing aluminum cald steel wire net | |
| Liu et al. | Interconnection of Cu wire/Au plating pads using parallel gap resistance microwelding process | |
| CN114682869B (en) | Composite welding method for eliminating incomplete welding of TC17 butt joint plates with substrate plates | |
| CN114211073B (en) | Welding material and welding method for hard alloy and steel |
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: 20210618 |