CN105436702A - Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries - Google Patents
Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries Download PDFInfo
- Publication number
- CN105436702A CN105436702A CN201510848057.1A CN201510848057A CN105436702A CN 105436702 A CN105436702 A CN 105436702A CN 201510848057 A CN201510848057 A CN 201510848057A CN 105436702 A CN105436702 A CN 105436702A
- Authority
- CN
- China
- Prior art keywords
- metal connecting
- connecting sheet
- lithium ion
- series
- welding
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a treatment method for a metal connecting piece obtained before series-parallel connection welding of lithium ion batteries. According to the method, before the metal piece is welded to a battery top cover, a laser marking machine is adopted to roughen the metal connecting piece, an oxide layer and squalidity on the surface are removed, uniformity of the roughening area and the depth is ensured, and after roughening is finished, welding of the metal piece and the top cover is carried out. The method is easy to operate and obvious in effect, and the weld spot quality and efficiency are improved.
Description
Technical field
The present invention relates to lithium ion battery and manufacture field, the metal connecting sheet processing mode before especially a kind of lithium ion battery welding.
Background technology
In the production process of electrokinetic cell, the welding procedure of battery cap and conductor pole piece and welding material are the key factors affecting battery performance always, and it is related to the performance of battery capacity, more to battery in groups after in car safe operation play a decisive role.
Battery is before top cover welds with metal connecting sheet, because metal connecting sheet is in production, processing, storage, transportation inevitably can produce the dirty of oxidation and surface, cause rosin joint when follow-up welding, affect quality of welding spot, must to remove the dirt on metal connecting sheet surface before battery employing metal connecting sheet welds.
Summary of the invention
The object of the invention is to, solve metal connecting sheet in actual production process producing, processing, storage, transportation inevitably can produce the dirty problem causing the uniformity difference of welding battery effect on oxidation and surface, improve the quality of welding, safeguard the normal operation of later stage battery pack in electric automobile.
For achieving the above object, the technical solution adopted in the present invention is:
Metal connecting sheet processing mode before a kind of lithium ion battery welding, described method is for before being welded to battery cover board by metal connecting sheet, laser marking machine is adopted to carry out frosting treatment to contact site when brace and welding battery, to remove dirt and the oxide layer on surface, and realize the weld pads tensile strength uniformity after battery in enormous quantities polishing.
Preferably, described laser power is 5-10W.
Preferably, complete within the 2-6 of metal connecting sheet after laser roughening completes hour and the welding of battery.
Preferably, metal connecting sheet material is copper.
The invention has the beneficial effects as follows: weld after the first laser roughening of metal connecting sheet, the operating type that the tensile strength of solder joint compares non-texturing is significantly improved, and the numeric distribution of the tensile strength of each solder joint demonstrates the homogeneity of height simultaneously again.
Accompanying drawing explanation
Fig. 1 is the tensile strength schematic diagram of the rear solder joint of sheet metal welding adopting laser roughening process;
Fig. 2 is the tensile strength schematic diagram of the rear solder joint of metal connecting sheet welding not adopting laser roughening process;
Fig. 3 is the laser roughening area schematic before metal connecting sheet welding;
Mark in figure: 1-metal connecting sheet, 2-boss, 3-texturing region.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Embodiment 1: metal connecting sheet processing mode---the laser roughening mode before a kind of lithium ion battery welding, operating process is as follows: be first positioned on laser marking machine by copper sheet, what need the part of polishing to let drive at marking machine between copper sheet boss goes out photosystem, laser power 30W, carries out laser roughening process.Copper sheet after completing texturing completed and the welding of battery in 6 hours, then measured pulling force required when copper sheet is peeled off from top cover, investigated the firmness of solder joint after the process of metal connecting sheet laser roughening with this.
Fig. 1 shows the copper sheet of the processing mode process adopting laser roughening, and under same weld electric current, mechanical properties numerical value is significantly improved, and numeric distribution uniformity has had remarkable improvement.
Embodiment 2: metal connecting sheet processing mode---the laser roughening mode before a kind of lithium ion battery welding, operating process is as follows: be first positioned on laser marking machine by corronil sheet, what need the part of polishing to let drive at marking machine between corronil sheet boss goes out photosystem, laser power 10W, carries out laser roughening process.Corronil sheet after completing texturing completed and the welding of battery in 2 hours, then measured pulling force required when corronil sheet is peeled off from top cover, investigated the firmness of solder joint after the process of metal connecting sheet laser roughening with this.
Embodiment 3: metal connecting sheet processing mode---the laser roughening mode before a kind of lithium ion battery welding, operating process is as follows: be first positioned on laser marking machine by nickel sheet, what need the part of polishing to let drive at marking machine between nickel sheet boss goes out photosystem, laser power 5W, carries out laser roughening process.Nickel sheet after completing texturing completed and the welding of battery in 48 hours, then measured pulling force required when nickel sheet is peeled off from top cover, investigated the firmness of solder joint after the process of metal connecting sheet laser roughening with this.
It should be noted that above embodiment is just illustrated the invention.Those skilled in the art does various amendment to the present invention, only otherwise depart from intended spirit of the present invention, all at claims of the present invention.
Claims (8)
1. the processing method of the metal connecting sheet before a lithium ion battery connection in series-parallel welding, it is characterized in that, described method is for before battery welds with metal connecting sheet, laser marking machine is utilized to carry out frosting treatment to the region (3) between the boss (2) on metal connecting sheet (1), namely laser beam irradiation metal connecting sheet appointed part is adopted, for removing the corrosion on metal connecting sheet surface, dirty, oxide layer.
2. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 1, is characterized in that, the material of described metal connecting sheet (2) is copper, alloy that nickel and copper nickel form with arbitrary proportion.
3. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 1, it is characterized in that, the laser power that described laser roughening adopts is 5W-30W.
4. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 3, it is characterized in that, the laser power that described laser roughening adopts is 5W-10W.
5. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 1, is characterized in that, completes and the welding of battery within the 2-48 of described metal connecting sheet after laser roughening completes hour.
6. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 5, is characterized in that, completes and the welding of battery within the 2-24 of described metal connecting sheet after laser roughening completes hour.
7. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 6, is characterized in that, completes and the welding of battery within the 2-12 of described metal connecting sheet after laser roughening completes hour.
8. the processing method of the metal connecting sheet before a kind of lithium ion battery connection in series-parallel welding according to claim 7, is characterized in that, completes and the welding of battery within the 2-6 of metal connecting sheet after laser roughening completes hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848057.1A CN105436702A (en) | 2015-11-25 | 2015-11-25 | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848057.1A CN105436702A (en) | 2015-11-25 | 2015-11-25 | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105436702A true CN105436702A (en) | 2016-03-30 |
Family
ID=55547580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510848057.1A Pending CN105436702A (en) | 2015-11-25 | 2015-11-25 | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105436702A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127451A (en) * | 2017-05-12 | 2017-09-05 | 东莞市力星激光科技有限公司 | A kind of electrokinetic cell low energy consumption laser welding process |
| CN112589272A (en) * | 2020-12-23 | 2021-04-02 | 湖北亿纬动力有限公司 | Battery laser welding method and battery |
| CN114131194A (en) * | 2021-12-22 | 2022-03-04 | 宜宾上交大新材料研究中心 | Laser welding method and device for copper and copper alloy |
| CN117340436A (en) * | 2023-12-06 | 2024-01-05 | 广东国玉科技股份有限公司 | New energy battery coating laser texturing method, system, device, equipment and medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103734A (en) * | 1985-05-17 | 1986-11-19 | 罗伯特·兰根 | Remove the method for metal surface dirt, particularly corrosion |
| CN201966235U (en) * | 2010-12-20 | 2011-09-07 | 东莞宏威数码机械有限公司 | Thin layer edge removing mechanism |
| CN103008889A (en) * | 2012-12-13 | 2013-04-03 | 江苏大学 | Laser rust removing device and method based on laser texturing technology |
| CN103203550A (en) * | 2013-03-18 | 2013-07-17 | 大连理工大学 | Device for washing lithium ion battery electrodes on basis of laser shock wave technology |
| 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 |
| CN203936519U (en) * | 2014-05-30 | 2014-11-12 | 宁德新能源科技有限公司 | Electrodes of lithium-ion batteries coating cleaning device |
-
2015
- 2015-11-25 CN CN201510848057.1A patent/CN105436702A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103734A (en) * | 1985-05-17 | 1986-11-19 | 罗伯特·兰根 | Remove the method for metal surface dirt, particularly corrosion |
| CN201966235U (en) * | 2010-12-20 | 2011-09-07 | 东莞宏威数码机械有限公司 | Thin layer edge removing mechanism |
| CN103008889A (en) * | 2012-12-13 | 2013-04-03 | 江苏大学 | Laser rust removing device and method based on laser texturing technology |
| CN103203550A (en) * | 2013-03-18 | 2013-07-17 | 大连理工大学 | Device for washing lithium ion battery electrodes on basis of laser shock wave technology |
| CN203936519U (en) * | 2014-05-30 | 2014-11-12 | 宁德新能源科技有限公司 | Electrodes of lithium-ion batteries coating cleaning device |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107127451A (en) * | 2017-05-12 | 2017-09-05 | 东莞市力星激光科技有限公司 | A kind of electrokinetic cell low energy consumption laser welding process |
| CN112589272A (en) * | 2020-12-23 | 2021-04-02 | 湖北亿纬动力有限公司 | Battery laser welding method and battery |
| CN114131194A (en) * | 2021-12-22 | 2022-03-04 | 宜宾上交大新材料研究中心 | Laser welding method and device for copper and copper alloy |
| CN117340436A (en) * | 2023-12-06 | 2024-01-05 | 广东国玉科技股份有限公司 | New energy battery coating laser texturing method, system, device, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105436702A (en) | Treatment method for metal connecting piece obtained before series-parallel connection welding of lithium ion batteries | |
| CN106129446B (en) | Method for producing laminate for battery | |
| CN107234329B (en) | Method for welding tab of soft-packaged battery cell | |
| CN110948111B (en) | Composite welding method for tab of soft package lithium ion battery | |
| CN103397343A (en) | Anode steel claw for aluminum electrolysis | |
| CN103769780B (en) | The welding method of a kind of lithium ion battery stainless steel top cover and copper sheet | |
| CN102694144A (en) | Lithium ion battery pole piece processing method | |
| CN109860497A (en) | A kind of welding method of Multilayer pole ear battery | |
| CN203751540U (en) | Double-station square lithium battery case laser welding jig | |
| CN104722918A (en) | Nickel-base high energy battery electrode tab welding process | |
| CN201259904Y (en) | Lithium-ion electric core and positive pole lug for manufacturing the electric core | |
| KR20130067714A (en) | Method for fabricating busbar for series connection of hetero-electrode battery using friction stir welding and busbar fabricated thereby | |
| CN105734611A (en) | Preparation method for novel energy-saving anode steel claw | |
| CN207124257U (en) | A kind of device for repairing chloride plate lug | |
| JP5546997B2 (en) | Welding method, battery manufacturing method, and battery | |
| CN204991824U (en) | Aluminium changes non - aluminium metal arc ear | |
| CN101752543A (en) | Production method for improving consistency of internal resistance of battery | |
| CN201783755U (en) | Double-row-teeth ultrasonic die | |
| CN204825067U (en) | Adopt novel aluminium electroloysis positive pole steel claw of super cross -section welded | |
| CN211980750U (en) | Roll type rotation-free nickel electrode lug | |
| KR20130067713A (en) | Method for fabricating busbar for series connection of hetero-electrode battery using laser welding and busbar fabricated thereby | |
| CN103042309A (en) | Cylindrical lithium ion battery pack welding device | |
| CN103035420A (en) | Silver contact point structure of contact system and manufacture method | |
| CN113787195A (en) | Method for preparing metal cantilever structure or hollow structure in additive mode | |
| CN203526760U (en) | Splicing type terminal welding mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20160330 |