CN107127451A - A kind of electrokinetic cell low energy consumption laser welding process - Google Patents
A kind of electrokinetic cell low energy consumption laser welding process Download PDFInfo
- Publication number
- CN107127451A CN107127451A CN201710335792.1A CN201710335792A CN107127451A CN 107127451 A CN107127451 A CN 107127451A CN 201710335792 A CN201710335792 A CN 201710335792A CN 107127451 A CN107127451 A CN 107127451A
- Authority
- CN
- China
- Prior art keywords
- laser welding
- metalwork
- laser
- electrokinetic cell
- energy consumption
- 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.)
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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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/60—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Abstract
The invention discloses a kind of electrokinetic cell low energy consumption laser welding process, the metal shell for metalwork to be welded on to some electrokinetic cells concatenates some electrokinetic cells, comprised the following steps that：A. feather plucking processing is carried out with laser marking machine to the surface of metalwork welding region；B. metalwork is placed on the metal shell of electrokinetic cell, regulates the laser beam focal position of laser welding head；C. laser welding head is worked, and laser is launched to metalwork welding region surface, carries out laser welding, and spray combustion oxygen to the weld of laser welding head in real time；D. metalwork is welded on the metal shell of electrokinetic cell, completes laser welding.Laser reflection amount of the present invention is few, laser welding head power and energy consumption are relatively low.
Description
Technical field
The present invention relates to laser welding technology field, more particularly to a kind of electrokinetic cell low energy consumption laser welding process.
Background technology
Laser welding be by the use of high-energy-density laser beam as thermal source a kind of high-efficiency and precision welding method, by making
Two pieces workpiece is fused together with laser beam.Conventional laser welding system is produced accurate by launching fine and close photon beam
Combination, the photon beam melt workpiece target area so that two pieces workpiece is fused together as a unit.
With the development of new energy technology, electrokinetic cell gradually obtains relatively broad application in fields such as automobiles, single
Voltage, electric current and the electricity of electrokinetic cell are very limited amount of, it is therefore desirable to which metalwork is welded on to the gold of multiple electrokinetic cells
Belong on housing, concatenate multiple electrokinetic cells.To ensure welding precision and high yield, its welding procedure mainly uses laser welding
Technique.In the prior art, the laser welding process of electrokinetic cell is after metalwork is placed on the metal shell of electrokinetic cell,
Laser welding is directly carried out, it has following missing：One, metalwork surface are often excessively smooth, and laser is penetrated in metalwork table
Behind face, there is 40%~60% laser to be reflected, not only waste laser energy, and the laser reflected is easily to laser
Welding equipment causes to damage；Secondly, be to dissolve the welding region of metalwork rapidly, and make metalwork and power battery metal housing
Weld together, it is necessary to which high-power laser welding head, its power generally reaches 4500W~6000W, its high energy consumption, price are high
It is high.
The content of the invention
The technical problem to be solved in the present invention be according to above-mentioned the deficiencies in the prior art there is provided a kind of laser reflection amount it is few,
The relatively low electrokinetic cell low energy consumption laser welding process of laser welding head power.
In order to solve the above technical problems, the technical scheme is that：A kind of electrokinetic cell low energy consumption laser welding process,
Metal shell for metalwork to be welded on to some electrokinetic cells, concatenates some electrokinetic cells, including following technique step
Suddenly：
A. feather plucking processing is carried out with laser marking machine to the surface of metalwork welding region；
B. metalwork is placed on the metal shell of electrokinetic cell, regulates the laser beam focal position of laser welding head；
C. laser welding head is worked, and laser is launched to metalwork welding region surface, carries out laser welding, and in real time to Laser Welding
The weld injection combustion oxygen of joint；
D. metalwork is welded on the metal shell of electrokinetic cell, completes laser welding.
It is expanded on further as to the present invention：
The material of the metalwork is red copper, and the material of the housing of power cell is metallic aluminium.
In step a, the surface roughness after the processing of laser marking machine feather plucking is Rz3~Rz4.
In step b, the surface of the metalwork welding region is arranged at the scope that laser welding head bears 0.5~5mm of defocus
It is interior, in the range of preferably 3mm~4mm.
The power of the laser welding head is 1800W~2000W, the injection flow velocity of the combustion oxygen for 10L/min~
30L/min。
The beneficial effects of the invention are as follows：One, due to before welding, first to the surface laser of metalwork welding region
Marking machine carries out feather plucking processing, and therefore, the reflection to laser beam can be greatly decreased in metalwork surface, and its volume reflection only has 5%~
10%, laser energy is not only saved, and damage of the laser reflected to brilliant welding equipment can be reduced；Secondly, due to
When laser welding head works, combustion oxygen is sprayed to the weld of laser welding head in real time, makes the metal surface and oxygen of weld
Gas burns, thus releases amount of heat, improves Laser Welding Speed, significantly reduces the price and energy consumption of laser welding head.
Brief description of the drawings
Fig. 1 is the schematic cross-section before metalwork feather plucking is handled and after feather plucking processing.
Fig. 2 is the laser welding schematic diagram being welded on metalwork on housing of power cell.
Fig. 3 is the partial enlarged drawing of part A in Fig. 2.
In figure：1. metalwork；11. flocked layer；2. metal shell；3. laser welding head.
Embodiment
The welding procedure step to the present invention is described in further detail below.
Referring to Figures 1 and 2, the present invention is a kind of electrokinetic cell low energy consumption laser welding process, for metalwork 1 to be welded
On the metal shell 2 of some electrokinetic cells, some electrokinetic cells are concatenated, are comprised the following steps that：
A. to the surface laser marking machine of the welding region of metalwork 1（Not shown in figure）Feather plucking processing is carried out, Fig. 1 is refer to,
There is one layer of flocked layer 11 on the surface of metalwork 1；
B. metalwork 1 is placed on the metal shell 2 of electrokinetic cell, regulates the laser beam focal position of laser welding head；
C. laser welding head 3 is worked, and laser is launched to metalwork welding region surface, carries out laser welding, and in real time to laser
The weld injection combustion oxygen of plumb joint 3；
D. metalwork is welded on the metal shell of electrokinetic cell, completes laser welding.
The material of the metalwork is red copper, and the material of the housing of power cell is metallic aluminium.
In step a, by laser marking machine feather plucking processing after surface roughness be Rz3~Rz4, i.e., coarse hair side it is each
Spacing between coarse contour line is between 3 μm~4 μm.
In step b, the surface of the metalwork welding region is arranged at the negative 0.5~5mm of defocus of laser welding head 3 scope
It is interior, in the range of preferably 3mm~4mm.Reference picture 2 and Fig. 3, laser welding head 3 launch downwards laser, with focus a, in Jiao
It is positive out of focus above point a, is negative defocus below focus a.It the experiment proved that in the range of 0.5~5mm of negative defocus, have
Stable laser facula, welding effect is optimal.
As shown in Fig. 2 the power of the laser welding head is 1800W~2000W, the injection flow velocity of the combustion oxygen is
10L/min~30L/min, combustion oxygen is sprayed by oxygen valve.
It is described above, only it is better embodiment of the present invention, every implementation according to technical scheme to more than
Any subtle modifications, equivalent variations and modifications that mode is made, are belonged in the range of technical solution of the present invention.
Claims (6)
1. a kind of electrokinetic cell low energy consumption laser welding process, the metal shell for metalwork to be welded on to some electrokinetic cells
On, concatenate some electrokinetic cells, it is characterised in that to comprise the following steps that：
A. feather plucking processing is carried out with laser marking machine to the surface of metalwork welding region；
B. metalwork is placed on the metal shell of electrokinetic cell, regulates the laser beam focal position of laser welding head；
C. laser welding head is worked, and laser is launched to metalwork welding region surface, carries out laser welding, and in real time to Laser Welding
The weld injection combustion oxygen of joint；
D. metalwork is welded on the metal shell of electrokinetic cell, completes laser welding.
2. electrokinetic cell low energy consumption laser welding process according to claim 1, it is characterised in that：The material of the metalwork
Expect for red copper, the material of the housing of power cell is metallic aluminium.
3. electrokinetic cell low energy consumption laser welding process according to claim 1, it is characterised in that：In step a, through too drastic
Surface roughness after the processing of light marking machine feather plucking is Rz3~Rz4.
4. electrokinetic cell low energy consumption laser welding process according to claim 1, it is characterised in that：In step b, the gold
The surface of category part welding region is arranged in the range of 0.5~5mm of the negative defocus of laser welding head.
5. electrokinetic cell low energy consumption laser welding process according to claim 4, it is characterised in that：The metalwork welding
The surface in region is arranged in the range of the negative defocus 3mm~4mm of laser welding head.
6. electrokinetic cell low energy consumption laser welding process according to claim 1, it is characterised in that：The laser welding head
Power be 1800W~2000W, the injection flow velocity of the combustion oxygen is 10L/min~30L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335792.1A CN107127451A (en) | 2017-05-12 | 2017-05-12 | A kind of electrokinetic cell low energy consumption laser welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335792.1A CN107127451A (en) | 2017-05-12 | 2017-05-12 | A kind of electrokinetic cell low energy consumption laser welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107127451A true CN107127451A (en) | 2017-09-05 |
Family
ID=59732302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335792.1A Pending CN107127451A (en) | 2017-05-12 | 2017-05-12 | A kind of electrokinetic cell low energy consumption laser welding process |
Country Status (1)
| Country | Link |
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| CN (1) | CN107127451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110797482A (en) * | 2019-10-21 | 2020-02-14 | 大同新成新材料股份有限公司 | Intelligent welding and labeling equipment and method for lithium battery |
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| JP2003220491A (en) * | 2002-01-23 | 2003-08-05 | Sumitomo Heavy Ind Ltd | Laser beam machining device |
| CN101908651A (en) * | 2010-02-09 | 2010-12-08 | 湖南科力远新能源股份有限公司 | Preparation method of nickel-hydrogen battery |
| CN104117776A (en) * | 2014-07-17 | 2014-10-29 | 深圳市大族激光科技股份有限公司 | Laser welding method for high-reflection metal parts |
| CN104870137A (en) * | 2013-02-27 | 2015-08-26 | 三菱重工业株式会社 | Methods and systems for joining materials |
| JP2015526298A (en) * | 2012-08-31 | 2015-09-10 | ポスコ | Laser welding method and laser welding member using the same |
| CN104942436A (en) * | 2014-03-31 | 2015-09-30 | 大族激光科技产业集团股份有限公司 | Variable-focus laser welding equipment, blowing protecting device thereof and blowing protecting method |
| CN105436702A (en) * | 2015-11-25 | 2016-03-30 | 合肥国轩高科动力能源有限公司 | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries |
| CN105458503A (en) * | 2015-12-11 | 2016-04-06 | 中国电子科技集团公司第四十八研究所 | Laser seal welding technology of composite aluminum alloy shell |
| DE102015119566A1 (en) * | 2014-11-14 | 2016-05-19 | Toyota Jidosha Kabushiki Kaisha | LASER WELDING DEVICE AND LASER WELDING METHOD |
| CN106229429A (en) * | 2016-08-26 | 2016-12-14 | 深圳市联赢激光股份有限公司 | A kind of dual wavelength complex welding method of cover plate of power battery |
-
2017
- 2017-05-12 CN CN201710335792.1A patent/CN107127451A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003220491A (en) * | 2002-01-23 | 2003-08-05 | Sumitomo Heavy Ind Ltd | Laser beam machining device |
| CN101908651A (en) * | 2010-02-09 | 2010-12-08 | 湖南科力远新能源股份有限公司 | Preparation method of nickel-hydrogen battery |
| JP2015526298A (en) * | 2012-08-31 | 2015-09-10 | ポスコ | Laser welding method and laser welding member using the same |
| CN104870137A (en) * | 2013-02-27 | 2015-08-26 | 三菱重工业株式会社 | Methods and systems for joining materials |
| CN104942436A (en) * | 2014-03-31 | 2015-09-30 | 大族激光科技产业集团股份有限公司 | Variable-focus laser welding equipment, blowing protecting device thereof and blowing protecting method |
| CN104117776A (en) * | 2014-07-17 | 2014-10-29 | 深圳市大族激光科技股份有限公司 | Laser welding method for high-reflection metal parts |
| DE102015119566A1 (en) * | 2014-11-14 | 2016-05-19 | Toyota Jidosha Kabushiki Kaisha | LASER WELDING DEVICE AND LASER WELDING METHOD |
| CN105436702A (en) * | 2015-11-25 | 2016-03-30 | 合肥国轩高科动力能源有限公司 | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries |
| CN105458503A (en) * | 2015-12-11 | 2016-04-06 | 中国电子科技集团公司第四十八研究所 | Laser seal welding technology of composite aluminum alloy shell |
| CN106229429A (en) * | 2016-08-26 | 2016-12-14 | 深圳市联赢激光股份有限公司 | A kind of dual wavelength complex welding method of cover plate of power battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110797482A (en) * | 2019-10-21 | 2020-02-14 | 大同新成新材料股份有限公司 | Intelligent welding and labeling equipment and method for lithium battery |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170905 |