CN105914389B - A kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing - Google Patents
A kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing Download PDFInfo
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- CN105914389B CN105914389B CN201610442921.2A CN201610442921A CN105914389B CN 105914389 B CN105914389 B CN 105914389B CN 201610442921 A CN201610442921 A CN 201610442921A CN 105914389 B CN105914389 B CN 105914389B
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 53
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 45
- 229920001778 nylon Polymers 0.000 claims abstract description 45
- 239000011521 glass Substances 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 239000000110 cooling liquid Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 239000004411 aluminium Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 136
- 230000000694 effects Effects 0.000 abstract description 9
- 239000005030 aluminium foil Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011229 interlayer Substances 0.000 abstract description 3
- 238000003475 lamination Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 206010016766 flatulence Diseases 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000989 Alclad Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention provides a kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing, including：By two battery core Soft Roll aluminum-plastic composite membranes for treating edge sealing welding according to edge sealing welding position, make PP internal layers are opposite to be bonded placement；Transparent glass layer is added on upper nylon layer, and fills thin layer cooling liquid, isolates both；Applying pressure makes each layer contact close；Incident from the top of transparent glass layer using laser beam, laser beam focus makes PP layer and lower PP layers to melt on the surface of upper aluminum layer；Stop irradiation or remove laser beam, upper PP layers of fusing realize secure rigid edge sealing with lower PP layers rapid cooling solidification.The present invention using aluminium foil interlayer absorption laser, be rapidly heated and heat transfer, realize PP layer fusing and the infusible technological effect of nylon outer layer, be aided with impressed pressure effect, the laser accurate for realizing top and the bottom aluminum-plastic composite membrane PP internal layers welds.Laser accurate welding has the advantages that edge sealing width is narrow, airtight quality is good, production efficiency is high.
Description
Technical field
The invention belongs to laser precision machining field, and in particular to a kind of laser accurate welding of Soft Roll aluminum hull battery core edge sealing
Method.
Background technology
At present, lithium ion battery applications are more and more extensive, can be roughly divided into three classes by standard of packaging shell, use column
18650 cylindrical batteries of stainless steel, square battery and the soft-package battery with aluminum plastic film with aluminum hull and stainless steel case.Plastic-aluminum is soft
The lithium battery of packaging is different from the metal shell of conventional liquid battery core, once security risk occurs, conventional liquid battery core is easily quick-fried
It is fried, and polymer battery core at most only can tympanites, the problem of any harmful person and property safety will not be produced.Reason is Soft Roll
Aluminum plastic film can provide relatively large cushion space when have situations such as certain ductility, flatulence, so will not be so
It is easily quick-fried.Secondly, when gas is on the increase, aluminum plastic film stress stretches, and the bonding between PP may be opened tear, Jiu Huirong
Gas is first easily released before in explosion threshold values, so as to prevent explosion.Furthermore when the gas of soft pack cell increases, easily
Cause the positive/negative plate of inside is separated to open very much so that reaction is slow, or even stops, so as to prevent explosion.Benefit from domestic hand
Machine, laptop, mobile terminal product, digital camera etc. are to the rapid growth of lithium battery demand, the market of aluminum-plastic composite membrane
Go from strength to strength.
The presently commercially available plastic-aluminum combined membrane structure of battery core Soft Roll is：Internal layer polyolefin (PP) base material, intermediate layer aluminium foil and outer
Layer nylon film, i.e. it is compound by cementability auxiliary agent between PP layers+aluminium lamination+nylon layer, every layer.Top layer nylon layer is dicoration
Layer, also serves and protects what aluminium lamination was not scraped off；Centre is molded and prevents the aluminium lamination that moisture invades for form；Internal layer PP resin beds
For electrolyte resistance layer.From the appearance, that bright face is aluminium lamination, is bag battery core, is inner layer, that face of obfuscation is nylon layer,
It is top layer.Battery core Soft Roll aluminum-plastic composite membrane technical indicator includes：Appearance, thickness, barrier, cold stamping shaped property, heat seal strength,
Water soak resistance energy, electrical insulating property, inner membrance puncture resistance, electrolyte resistance stability, electrical property etc..
Soft Roll aluminum hull battery core needs to seal Soft Roll aluminum-plastic composite membrane in process, is typically all to use at present
Thermocompression bonding connection, i.e., press edge sealing position up and down using the blade type pressure head for being heated to specified temp, by two layers of heat transfer
The PP internal layers of aluminum-plastic composite membrane occur fusing and are bonded together.But existing sealing machine is in Soft Roll capping processes, easily
So that there is bubble and causes Soft Roll leakproofness to decline influence soft package lithium battery service life in Soft Roll sealing part；Secondly, existing envelope
Easily there is flash in mouth machine Soft Roll sealing part in Soft Roll capping processes, is influencing also influence while soft package lithium battery is beautiful
The bonding of Soft Roll sealing part is so as to influence its leakproofness；Furthermore thermocompression bonding connection relies on slow increasing temperature and pressure heat seal, manufacturing process
It is longer, and since long-time high-temperature baking acts on, make aluminium lamination brittle, so as to cause sealing performance to deteriorate.Finally, existing envelope
Mouthful machine is limited to blade type indenter size and above-mentioned edge sealing Welding Problems, general edge sealing width design obtain it is larger, in identical faces
The internal capacity of a part of Soft Roll aluminum hull battery core has been accounted in the case of product soft pack cell, has caused capacitance loss.
The content of the invention
The present invention is in view of the above shortcomings of the prior art, there is provided one kind is with edge sealing width is narrow, airtight quality is good, production
The laser accurate welding method of efficient Soft Roll aluminum hull battery core edge sealing.
The present invention is achieved through the following technical solutions：
A kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing, includes the following steps：
(1) make PP internal layers opposite according to edge sealing welding position two battery core Soft Roll aluminum-plastic composite membranes for treating edge sealing welding
Fitting is placed, i.e., is followed successively by lower nylon layer, lower aluminum layer, PP layers lower, PP layers upper, upper aluminum layer and upper nylon layer from the bottom to top；Wherein
The thickness of lower nylon layer and upper nylon layer is 10~100 μm, and the thickness of lower aluminum layer and upper aluminum layer is 10~100 μm, lower PP
Layer and thickness PP layers upper are 20~150 μm；
The nylon layer is more than 80% to laser beam transmission rate used in later step (4)；
(2) transparent glass layer is added on upper nylon layer, and one is filled between upper nylon layer and transparent glass layer
A thin layer cooling liquid, isolates both；
The transparent glass layer refers to be more than 90% to laser beam transparent used in later step (4), i.e. transmissivity；Institute
State thin layer cooling liquid and also require that and 90% is more than to laser beam transparent used in later step (4), i.e. transmissivity；
(3) applying pressure makes upper and lower battery core Soft Roll aluminum-plastic composite membrane contact closely, and contact stress is more than 1N/cm2；
(4) use laser beam incident from the top of transparent glass layer, laser beam transparent transparent glass layer, thin layer cooling liquid
With upper nylon layer, the surface of upper aluminum layer is focused on, upper aluminum layer absorption laser, supreme PP layers and lower PP layers of heat transfer, makes PP layers
With lower PP layers fusing；
(5) stop irradiation or remove laser beam, upper PP layers of fusing realize secure rigid with lower PP layers rapid cooling solidification
Edge sealing；
(6) repeat step (4)-(5), make the scanning of laser beam continuous moving that continuous path welding can be achieved.
Further, further included in step (4)：Using another laser beam at the same time from the incidence of the lower section of lower nylon layer, laser
Beam passes through lower nylon layer, focuses on the surface of lower aluminum layer, and lower aluminum layer absorbs laser, and heat transfer is to lower PP layers and PP layers upper, under making
PP layers and upper PP layers fusing；It is carried out at the same time Laser Welding up and down.
The present invention has the advantages that：
1st, the report that aluminum-plastic composite membrane edge sealing is carried out using laser welding is had not yet to see, the present invention is transmitted using laser
The nylon outer layer of top aluminum-plastic composite membrane, acts directly on aluminium foil interlayer so that and aluminium foil absorbs laser energy and is rapidly heated,
And heat transfer is to PP internal layers and the PP internal layers for the lower part aluminum-plastic composite membrane being bonded therewith, in the PP for making top and the bottom aluminum-plastic composite membrane
Layer rapid melting, while under impressed pressure effect, realize the firm welding of top and the bottom aluminum-plastic composite membrane PP internal layers.It is of the invention skilful
The wonderful physical characteristics of materials that make use of aluminum-plastic composite membrane, nylon outer layer are preferable to common infrared, visible light wave range laser beam
Transmissison characteristic (general transmissivity be more than 80%), and the fusing point (general more than 350 degree) that nylon outer layer is higher and PP internal layers compared with
Low fusing point (generally below 200 degree) deviation feature, using the absorption laser of aluminium foil interlayer, is rapidly heated and heat transfer, reality
Existing PP layers melt and the infusible technological effect of nylon outer layer, are aided with impressed pressure effect, it is plastic-aluminum combined to realize top and the bottom
The laser accurate welding of film PP internal layers.
2nd, very quick, welding efficiency is heated compared to traditional thermocompression bonding connection, laser accurate welding method of the invention
Height, and avoid conventional thermocompression weldering long-time high-temperature baking and make the technical problem of aluminium lamination embrittlement.
3rd, the ingenious effect of uniform pressure and the isolation and cooling effect of cooling liquid that make use of glass plate of the present invention,
Prevent nylon layer itself slight absorption laser and caused heat up excessive incident adhesion, burn-off phenomenon by aluminium foil heat transfer,
And glass sheet press is uniform, the problem of sealing produces flash, bubble is avoided, this method is suitable for having similar multilayer film
The laser accurate welding of combined material, relevance grade are very wide.
4th, since the sealing edge quality of the laser accurate welding of the present invention is high, so that edge sealing width greatly reduces,
In the case of identical size soft pack cell, edge sealing area is saved so as to lift battery core area (i.e. battery core capacity), and adjust envelope
Hem width degree need not replace blade type thermal head as welding conventional thermocompression, and edge sealing width is determined by laser beam spot diameter, adjust
Convenient, cost is low.
5th, compared to traditional thermoae plate pressure welding, laser welding measure of precision is high, and production efficiency is high, the degree of automation higher.
Brief description of the drawings
Fig. 1 is the welding structure figure of Soft Roll aluminum hull battery core edge sealing of the present invention.
Embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
The present invention provides a kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing, include the following steps：
(1) as shown in Figure 1, on workbench 10, two battery core Soft Roll aluminum-plastic composite membranes of edge sealing welding will be treated according to envelope
Side welding position, makes PP internal layers are opposite to be bonded placement, i.e., be followed successively by from the bottom to top lower nylon layer 1, lower aluminum layer 2, lower PP layers 3, on
PP layers 4, upper aluminum layer 5 and upper nylon layer 6；It is 10~100 μm wherein to descend the thickness of nylon layer 1 and upper nylon layer 6, lower aluminum layer 2
Thickness with upper aluminum layer 5 is 10~100 μm, and the thickness of lower PP layers 3 and upper PP layers 4 is 20~150 μm.
The battery core Soft Roll aluminum-plastic composite membrane is finished product, including internal layer polyolefin (PP) base material, intermediate layer aluminium foil and outer layer
Nylon film, i.e. PP layer+aluminium lamination+nylon layer, it is compound by cementability auxiliary agent between every layer.
The lower nylon layer 1 and upper nylon layer 6 are more than 80% to laser beam transmission rate used in later step (4).
(2) transparent glass layer 7 is added on upper nylon layer 6, and is filled out between upper nylon layer 6 and transparent glass layer 7
A thin layer cooling liquid 8 (such as water) is filled, isolates both；
The transparent glass layer 7 refers to be more than 90% to laser beam transparent used in later step (4), i.e. transmissivity；
The thin layer cooling liquid 8 is also required that is more than 90% to laser beam transparent used in later step (4), i.e. transmissivity.
This setup take full advantage of transparent glass layer 7 uniform pressure effect and thin layer cooling liquid 8 every
From with cooling effect, can prevent in post laser irradiation process nylon layer 6 itself slight absorption laser and by upper aluminium
5 heat transfer of layer cause heat up excessive incident adhesion, burn-off phenomenon；, can be to avoid envelope and 7 pressure of transparent glass layer is uniform
Mouth produces the problem of flash, bubble.
(3) applying pressure makes upper and lower two battery core Soft Roll aluminum-plastic composite membranes contact closely, and contact stress is more than 1N/cm2；
(4) it is incident from the top of transparent glass layer 7 using laser beam 9, laser beam transparent transparent glass layer 7, thin layer cooling
Liquid 8 and upper nylon layer 6, focus on the surface of upper aluminum layer 5, and upper aluminum layer 5 absorbs laser, supreme PP layers 4 of heat transfer and PP layers lower
3, PP layers 4 and lower PP layers 3 is melted (temperature is more than 185 degree)；
(5) stop irradiation or remove laser beam 9, the upper PP layers 4 of fusing and 3 rapid cooling solidification of lower PP layers realization are firmly tight
Sealing strip；It is about in the prior art 3 ± 0.2mm using edge sealing width during thermoae plate press welding method, and laser accurate in the present invention
Edge sealing can realize width between 0.2mm~1mm.
(6) repeat step (4)-(5), make the scanning of laser beam continuous moving that continuous path welding can be achieved.
Preferably, laser accurate welding method of the present invention can also increase by one in the lower section of lower nylon layer 1 and swash
Light beam, up and down at the same time laser welding.Further included in step (4)：Using another laser beam 9 at the same time from the lower section of lower nylon layer 1
Incidence, laser beam 9 pass through lower nylon layer 1, focus on the surface of lower aluminum layer 2, and lower aluminum layer 2 absorbs laser, heat transfer to lower PP layers 3
With upper PP layers 4, melt lower PP layers 3 and upper PP layers 4.This mode for being carried out at the same time Laser Welding up and down, can dramatically speed up soft
The speed of alclad shell battery core edge sealing, improves work efficiency.
The present invention can change into that various ways are apparent to one skilled in the art, and such change is not considered as
Depart from the scope of the present invention.All such technical staff to the field obviously change, and are included within this right
Within the scope of it is required that.
Claims (2)
1. a kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing, it is characterised in that include the following steps：
(1) two battery core Soft Roll aluminum-plastic composite membranes for treating edge sealing welding are made into two battery core Soft Roll aluminium according to edge sealing welding position
Mould the opposite fitting placement of PP layers of composite membrane, i.e., be followed successively by from the bottom to top lower nylon layer (1), lower aluminum layer (2), PP layers lower (3), on
PP layers (4), upper aluminum layer (5) and upper nylon layer (6)；It is 10~100 μ wherein to descend the thickness of nylon layer (1) and upper nylon layer (6)
The thickness of m, lower aluminum layer (2) and upper aluminum layer (5) is 10~100 μm, and the thickness of lower PP layers (3) and PP layers upper (4) is 20~
150μm；
The lower nylon layer (1) and upper nylon layer (6) are more than 80% to laser beam transmission rate used in later step (4)；
(2) add a transparent glass layer (7) on upper nylon layer (6), and upper nylon layer (6) and transparent glass layer (7) it
Between fill a thin layer cooling liquid (8), make both isolate；
The transparent glass layer (7) refers to be more than 90% to laser beam transparent used in later step (4), i.e. transmissivity；Institute
State thin layer cooling liquid and also require that and 90% is more than to laser beam transparent used in later step (4), i.e. transmissivity；
(3) applying pressure makes upper and lower two battery core Soft Roll aluminum-plastic composite membranes contact closely, and contact stress is more than 1N/cm2；
(4) incident from the top of transparent glass layer (7) using laser beam (9), laser beam (9) is through transparent glass layer (7), thin layer
Cooling liquid (8) and upper nylon layer (6), focus on the surface of upper aluminum layer (5), and upper aluminum layer (5) absorbs laser, the supreme PP of heat transfer
Layer is (4) and lower PP layers (3), makes PP layers (4) and lower PP layers (3) fusing；
(5) stop irradiation or remove laser beam (9), upper PP layers (4) of fusing and lower PP layers (3) rapid cooling solidification is realized firm
Close edge sealing；
(6) repeat step (4)-(5), make the scanning of laser beam continuous moving that continuous path welding can be achieved.
2. the laser accurate welding method of Soft Roll aluminum hull battery core edge sealing according to claim 1, it is characterised in that step
(4) further included in：Using another laser beam (9) while incident from the lower section of lower nylon layer (1), laser beam (9) passes through lower nylon
Layer (1), focuses on the surfaces of lower aluminum layer (2), and lower aluminum layer (2) absorbs laser, heat transfer to PP layers lower (3) and PP layers upper (4), makes
Lower PP layers (3) and PP layers upper (4) are melted；It is carried out at the same time Laser Welding up and down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610442921.2A CN105914389B (en) | 2016-06-17 | 2016-06-17 | A kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing |
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| CN201610442921.2A CN105914389B (en) | 2016-06-17 | 2016-06-17 | A kind of laser accurate welding method of Soft Roll aluminum hull battery core edge sealing |
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| CN105914389B true CN105914389B (en) | 2018-04-24 |
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| CN107891223A (en) * | 2017-11-24 | 2018-04-10 | 苏州市信德威激光科技有限公司 | A kind of device and process using laser welding aluminum plastic film |
| CN108615828A (en) * | 2018-03-30 | 2018-10-02 | 北京国能电池科技股份有限公司 | The lithium ion battery of lithium ion battery encapsulating film, lithium ion battery packaging method and its preparation |
| CN110828746B (en) * | 2020-01-13 | 2020-07-10 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
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| CN2762360Y (en) * | 2004-12-27 | 2006-03-01 | 比亚迪股份有限公司 | Plastic nickel sheet injection and lid laser welding type battery sealing structure |
| CN201608231U (en) * | 2009-12-31 | 2010-10-13 | 深圳市艾博尔新能源有限公司 | 9V soft package lithium battery |
| CN202687165U (en) * | 2012-06-21 | 2013-01-23 | 惠州Tcl金能电池有限公司 | Polymer soft package lithium ion battery and structure for preventing aluminum plastic film corner position damage of polymer soft package lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002198012A (en) * | 2000-12-26 | 2002-07-12 | Fdk Corp | Sealing device and sealing method of cylindrical cell |
| JP2004063406A (en) * | 2002-07-31 | 2004-02-26 | Sanyo Electric Co Ltd | Laser sealing battery, its manufacturing method and laser irradiation apparatus |
| KR101347975B1 (en) * | 2012-12-21 | 2014-01-08 | 넥스콘 테크놀러지 주식회사 | Manufacture line of battery pack |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2762360Y (en) * | 2004-12-27 | 2006-03-01 | 比亚迪股份有限公司 | Plastic nickel sheet injection and lid laser welding type battery sealing structure |
| CN201608231U (en) * | 2009-12-31 | 2010-10-13 | 深圳市艾博尔新能源有限公司 | 9V soft package lithium battery |
| CN202687165U (en) * | 2012-06-21 | 2013-01-23 | 惠州Tcl金能电池有限公司 | Polymer soft package lithium ion battery and structure for preventing aluminum plastic film corner position damage of polymer soft package lithium ion battery |
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