CN109585936A - Template manufacturing method of single-sided laminated soft package battery - Google Patents

Template manufacturing method of single-sided laminated soft package battery Download PDF

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Publication number
CN109585936A
CN109585936A CN201811505490.5A CN201811505490A CN109585936A CN 109585936 A CN109585936 A CN 109585936A CN 201811505490 A CN201811505490 A CN 201811505490A CN 109585936 A CN109585936 A CN 109585936A
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China
Prior art keywords
rectangular
negative electrode
hole
electrode tab
protrusion
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CN201811505490.5A
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CN109585936B (en
Inventor
江海波
蔡桂凡
石永倩
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Gotion High Tech Co Ltd
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Gotion High Tech Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0585Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/0413Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention relates to the field of lithium ion battery material test and verification, in particular to a template manufacturing method of a single-sided laminated soft package battery.

Description

A kind of templating production method of single side lamination soft-package battery
Technical field
The present invention relates to lithium ion battery materials to test verifying field, especially a kind of template of single side lamination soft-package battery Change production method.
Background technique
Lithium electrochmical power source is a kind of device that chemical energy is changed into electric energy, such as lead-acid battery, its invention and application It lays a good foundation for the development of battery, is seeking always as wherein best lithium-ion battery system with fastest developing speed, people Open up new direction.Your writing emphatically is played in the development and utilization of new energy as energy source device and the secondary cell of energy storage mode With wherein lithium ion battery is widely used with its every excellent performance.
Direct acting factor of the material as battery performance, the verifying at battery core end are extremely important.The electricity of material at present There are two types of means for performance verification, first is that pilot scale line full battery is verified, second is that laboratory half-cell buckles electricity verifying;Wherein, pilot scale The production of line full battery, which exists, occupies the disadvantages of stock number is big, the time is long, is unfavorable for the requirement that enterprise quickly carries out material evaluation and test, and Half-cell cannot working environment of the simulation material in full battery completely, so needing a kind of science between two methods The method of evaluation.
Single side lamination soft-package battery belongs to the scope of full battery, while Production Time is short and takes up less resources, and can effectively comment It measures and monitor the growth of standing timber the electrical property of material, but the production method of single side lamination soft-package battery, generally by artificial lamination assembling, this just leads It causes with the single side lamination soft-package battery of a batch assembling there are biggish error, battery with two side terminals is unable to get guarantee while assembling Efficiency also has production method to be hoisted, therefore being badly in need of a kind of standardized single side lamination soft-package battery at present.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of templating systems of single side lamination soft-package battery Make method, to solve influence of the artificial assembling factor to battery consistency and packaging efficiency, largely improves enterprise's material The efficiency and accuracy of verifying.
To achieve the above object, the invention adopts the following technical scheme:
A kind of templating production method of single side lamination soft-package battery, comprising the following steps:
S1, diaphragm, positive plate and negative electrode tab are made by preset standard size;
S2, production base template, template and upper die plate are pushed;The base template includes bottom plate, is set to backplate surface With the consistent rectangular recess of standard size of diaphragm, and at least two positioning columns being set on bottom plate;The pushing template Including lower platen, the pushing plate surface is equipped with rectangular through-hole and at least two location holes, and the positioning column and location hole are one by one Corresponding matching;The size of the rectangular through-hole and the standard size of diaphragm are consistent, and are respectively equipped on the inside of four sides of rectangular through-hole First protrusion of at least one rectangular and trapezoidal shapes, each first protrusion constitute the standard with positive plate and negative electrode tab The consistent localization region of size;The upper die plate includes top board, and it is in rectangle that the periphery of the top board, which is equipped at least four, Or the second trapezoidal protrusion, and when the top board is placed in the rectangular through-hole of lower platen, first protrusion Connect to forming at least four rubberizing holes with the second protrusion one-to-one correspondence;
S3, diaphragm is placed in the rectangular recess of base template, then template will be pushed and cooperate positioning column to be installed on by location hole On base template, rectangular through-hole is completely overlapped with rectangular recess, while first protrusion on each side of rectangular through-hole pushes down diaphragm;Again Positive plate or negative electrode tab are put into rectangular through-hole, four sides of positive plate or negative electrode tab respectively with corresponding first protrusion phase It connects, positive plate or negative electrode tab are restricted in localization region;Then upper die plate is placed in rectangular through-hole, upper die plate will While positive plate or negative electrode tab are pushed down, each second protrusion connects to forming rubberizing hole with corresponding first protrusion, then thoroughly It crosses rubberizing hole to tape, positive plate or negative electrode tab is pasted together with diaphragm;
S4, successively by upper die plate, push form removable, then diaphragm is turned over together with the positive plate or negative electrode tab being pasted together Face is placed again into rectangular recess, then pastes remaining negative electrode tab or positive plate with diaphragm by S3 operation;
S5, envelope aluminum plastic film is carried out to the two-sided diaphragm for pasting positive plate and negative electrode tab respectively, is assembled into single side lamination soft-package battery.
Further, the positioning column totally two, two positioning columns are located at the outside of two diagonally opposing corners of rectangular recess.
Further, the location hole totally two.
Further, the rectangular recess and rectangular through-hole are rectangle.
Further, it is set on the inside of the long side of the rectangular through-hole there are two the first protrusion, the short side inside of rectangular through-hole is set There is first protrusion.
Further, the top board is rectangle, is set on the outside of the long side of top board there are two the second protrusion, top board Second protrusion is equipped on the outside of short side.
Further, the step S1 the following steps are included:
1) positive mix, cathode powder and conductive agent powder drying for standby are taken;
2) 1) positive mix obtained, cathode powder and conductive agent powder are subjected to conjunction slurry respectively, anode sizing agent and cathode is made Slurry;
3) 2) anode sizing agent obtained and negative electrode slurry are subjected to collector coating respectively;
4) 3) plus plate current-collecting body after the completion of being coated with and negative current collector are dried;
5) by after 4) resulting product roller process, the positive plate and negative electrode tab that are not cut;
6) 5) the resulting positive plate that does not cut and negative electrode tab are punched into standard-sized positive plate and negative electrode tab;
7) 6) tab is respectively welded in resulting positive plate and negative electrode tab, drying for standby;
8) diaphragm is punched into standard size, drying for standby.
Beneficial effects of the present invention are as follows:
For the short slab of existing lithium ion battery material electrical property verifying aspect, i.e., pilot scale line full battery have occupy stock number it is big, The disadvantages of time is long, half-cell then cannot working environment etc. of the simulation material in full battery completely, and single side lamination Soft Roll electricity Although pond belongs to the scope of full battery, while Production Time is short and takes up less resources, and can effectively evaluate and test the electrical property of material, still The problem of error is easy to produce by man-made assembly;The present invention devises a kind of templating production side of single side lamination soft-package battery Method can solve influence of the artificial assembling factor to battery consistency and packaging efficiency, to largely improve enterprise The efficiency and accuracy of material identification;It is about 15 using the single side lamination soft-package battery Production Time of the method for the present invention through practicing Min is manually assembled compared to traditional, and efficiency about improves 2-3 times, and battery consistency is obviously improved.
Detailed description of the invention
Fig. 1 is production process schematic diagram of the invention;
Fig. 2 is the structural schematic diagram of base template;
Fig. 3 is the structural schematic diagram for pushing template;
Fig. 4 is the structural schematic diagram of upper die plate;
Fig. 5 is that the electric discharge for the first time for 50 single side lamination soft-package batteries that the method for the present invention makes respectively with traditional method without templet is held Amount comparison box traction substation;
Fig. 6 is the first effect comparison case for 50 single side lamination soft-package batteries that the method for the present invention makes respectively with traditional method without templet Line chart.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
A kind of templating production method of single side lamination soft-package battery, comprising the following steps:
Firstly, by preset standard size production diaphragm, positive plate and negative electrode tab, referring to conventional positive plate and negative electrode tab production Method, steps are as follows:
Step 1) dry 24 h or more in 90 DEG C of baking ovens by LiFePO4 (LFP), graphite and carbon black conductive agent (SP) powder Spare, conductive agent powder is needed by 10 min of grinding or so, it is ensured that dispersion effect.
Step 2) LFP resulting to step 1), graphite and respective conductive agent carry out conjunction slurry, positive dispersing agent by a certain percentage With N-Methyl pyrrolidone (NMP), cathode dispersing agent is with carboxymethyl cellulose (CMC), wherein it is LFP:SP that anode, which closes slurry ratio: PVDF=94:2:4, it is C:SP:CMC:SBR=93:3:2:3 that cathode, which closes slurry ratio,;Slurry is closed to use from dynamic circuit connector pulp grinder, Revolving speed gets over 2000 r/min, closes slurry about 10 min of time.
The resulting positive and negative electrode slurry of step 2) is coated by step 3) according to suitable thickness, and plus plate current-collecting body uses aluminium Foil, negative current collector use copper foil, and specific thickness determines that final N/P is designed as according to relevant parameters such as the N/P ratios being pre-designed 1.12。
Positive and negative collector after the completion of step 3) is coated with by step 4) is dried, and drying time is 6 h.
Step 4) product is passed through the stainless steel roller process of different gap by step 5) respectively according to different compacting requirements, just Actually 2.4g/cc, cathode compacting are 1.4g/cc to extreme pressure.
Pole piece of the roll-in in step 5) after complete is punched into standard-sized positive and negative plate according to fixing mould by step 6), For positive plate having a size of 50 × 40 mm, negative electrode tab needs to wipe the active material at soldering polar ear having a size of 53 × 42 mm.
External tab is respectively welded at the tab of step 6) treated positive and negative plate step 7), drying for standby, just Pole aluminium pole ears, about 39 mm of length, cathode nickel tab, about 37.5 mm of length.
Diaphragm and aluminum plastic film are punched into drying for standby after standard size, diaphragm size 66 according to fixing mould by step 8) × 54 mm, aluminum plastic film is having a size of 140 × 100 mm.
So far complete positive plate, negative electrode tab, diaphragm and aluminum plastic film preparation, then start in drying shed by template into The assembling of row single side lamination soft-package battery, drying shed dew point are advisable at -40 DEG C or less.
Template required for assembling includes base template, pushes template and upper die plate.
Referring to shown in Fig. 2, the base template includes bottom plate 10, is set to the standard size with diaphragm on 10 surface of bottom plate The common diaphragm of consistent rectangular recess 11(, pole piece are generally rectangle, are with rectangular rectangular recess 11 in the present embodiment Example), and two positioning columns 12 being set on bottom plate 10;Two positioning columns 12 be located at two of rectangular recess 11 it is tiltedly right The outside at angle.
Referring to shown in Fig. 3, the pushing template includes lower platen 20, and 20 surface of lower platen is equipped with 21 He of rectangular through-hole Two location holes 22;The size of the rectangular through-hole 21 is consistent with the standard size of diaphragm, is similarly rectangle, rectangular through-hole 21 Two long sides on the inside of set there are two the first protrusion 23 for being in rectangle, one is equipped on the inside of two short sides in the first convex of rectangle Portion 23 out;First protrusion 23 is also possible to trapezium structure, as long as the top of the first protrusion 23 is parallel with 21 side of rectangular through-hole ?;Each first protrusion 23 constitutes the consistent localization region of standard size with positive plate and negative electrode tab.
Positioning column 12, location hole 22 correspond cooperation, and positioning column 12 can be cooperated by location hole 22, will directly be pushed Template is buckled on base template.
Simultaneously, it is contemplated that the presence of pole-piece pole-ear, the present embodiment rectangular through-hole 21 short side there are a notch 24, For preferably disposing pole-piece pole-ear when lamination rubberizing, it can not also stay the notch 24 that tab is directly ridden over to the side for pushing template Edge.
Referring to shown in Fig. 4, the upper die plate includes top board 30, and top board 30 is similarly rectangle, top board 30 Size is less than the size of positive and negative plate;Set on the outside of the long side of top board 30 there are two the second protrusion 31, top board 30 it is short Second protrusion 31 is equipped on the outside of side.
When top board 30 is placed in the rectangular through-hole 21 of lower platen, six the first protrusions 23 and six second protrusions Portion 31, which corresponds, to connect, and on the one hand on the other hand fixed top board 30 forms six rubberizing holes 32 in rectangular through-hole 21.
Using base template, push the specific cell assembling processes of template and upper die plate referring to Fig.1 in (a) to (i) Process, specific as follows:
Referring to (a) → (b), first diaphragm 1 is placed in the rectangular recess 11 of bottom plate 10.
Positioning column 12 is cooperated to be installed on base template by location hole 22 referring to (c), then by lower platen 20, at this time rectangle Through-hole 21 and rectangular recess 11 are completely overlapped, while six first protrusions 23 on 21 4 side of rectangular through-hole push down diaphragm 1.
Referring to (d), then positive plate 2 is put into rectangular through-hole 21, four sides of positive plate are protruded with corresponding first respectively Portion 23 connects, at this time because the presence of the first protrusion 23, forms six holes, positive plate 2 is restricted in localization region.
Referring to (e), then top board 30 is placed in rectangular through-hole 21 to (top board 30 and the overall thickness of positive plate 2 are small It is advisable in the depth for being equal to rectangular recess 11), while upper die plate pushes down positive plate 2, six the second protrusions 31 and six A one-to-one correspondence of first protrusion 23, which connects, to be blocked, and six rubberizing holes 32 are formed.
Referring to (f), then through six rubberizing holes 32 to taping 4 at six holes, thus by positive plate 2 and diaphragm 1 It is pasted together.
Referring to (g), successively by upper die plate, pushing form removable, diaphragm 1 and positive plate 2 are left.
Referring to (h), then diaphragm 1 is placed again into rectangular recess 11 together with 2 turn-over of positive plate being pasted together, it will Remaining negative electrode tab 3 equally presses the flow operations of (a) → (g), completes the stickup of negative electrode tab 3 and diaphragm 1.
Referring to (i), the two-sided diaphragm 1 for pasting positive plate 2 and negative electrode tab 3 respectively is finally subjected to envelope aluminum plastic film, is assembled into Single side lamination soft-package battery, entire assembling process about in 15min or so, are improved efficiency than being manually assembled up to 2-3 times.
Then fluid injection and vacuum seal after being dried in vacuo, general vacuum drying temperature is 65 DEG C, vacuum degree is answered Lower than about 24 h of -0.1 Mpa, time or so, reservoir quantity is about 3 mL, and sealing temperature is 180 DEG C, the time is 8 s;It completes Battery upper fixture after stand and carry out the test such as subsequent chemical conversion, partial volume after 12 h, chemical conversion work step is 0.1 C constant-current charge, 5 h, change At rear progress secondary vacuum sealing and side seal, then upper fixture carries out partial volume, and partial volume work step is that 0.5 C is followed again after 0.4 C is full of Ring two weeks.
50 single side lamination Soft Roll electricity are respectively made by templating production method of the invention and traditional hand-made method Pond, 46 mAh of battery design capacity;Discharge capacity for the first time and first effect test are carried out to two groups of batteries of two methods production, as a result As shown in Figure 5 and Figure 6, it can be seen that the battery made using template of the invention has obvious in terms of consistency Advantage.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.

Claims (7)

1. a kind of templating production method of single side lamination soft-package battery, which comprises the following steps:
S1, diaphragm, positive plate and negative electrode tab are made by preset standard size;
S2, production base template, template and upper die plate are pushed;The base template includes bottom plate, is set to backplate surface With the consistent rectangular recess of standard size of diaphragm, and at least two positioning columns being set on bottom plate;The pushing template Including lower platen, the pushing plate surface is equipped with rectangular through-hole and at least two location holes, and the positioning column and location hole are one by one Corresponding matching;The size of the rectangular through-hole and the standard size of diaphragm are consistent, and are respectively equipped on the inside of four sides of rectangular through-hole First protrusion of at least one rectangular and trapezoidal shapes, each first protrusion constitute the standard with positive plate and negative electrode tab The consistent localization region of size;The upper die plate includes top board, and it is in rectangle that the periphery of the top board, which is equipped at least four, Or the second trapezoidal protrusion, and when the top board is placed in the rectangular through-hole of lower platen, first protrusion Connect to forming at least four rubberizing holes with the second protrusion one-to-one correspondence;
S3, diaphragm is placed in the rectangular recess of base template, then template will be pushed and cooperate positioning column to be installed on by location hole On base template, rectangular through-hole is completely overlapped with rectangular recess, while first protrusion on each side of rectangular through-hole pushes down diaphragm;Again Positive plate or negative electrode tab are put into rectangular through-hole, four sides of positive plate or negative electrode tab respectively with corresponding first protrusion phase It connects, positive plate or negative electrode tab are restricted in localization region;Then upper die plate is placed in rectangular through-hole, upper die plate will While positive plate or negative electrode tab are pushed down, each second protrusion connects to forming rubberizing hole with corresponding first protrusion, then thoroughly It crosses rubberizing hole to tape, positive plate or negative electrode tab is pasted together with diaphragm;
S4, successively by upper die plate, push form removable, then diaphragm is turned over together with the positive plate or negative electrode tab being pasted together Face is placed again into rectangular recess, then pastes remaining negative electrode tab or positive plate with diaphragm by S3 operation;
S5, envelope aluminum plastic film is carried out to the two-sided diaphragm for pasting positive plate and negative electrode tab respectively, is assembled into single side lamination soft-package battery.
2. a kind of templating production method of single side lamination soft-package battery according to claim 1, which is characterized in that described Positioning column totally two, two positioning columns are located at the outside of two diagonally opposing corners of rectangular recess.
3. a kind of templating production method of single side lamination soft-package battery according to claim 2, which is characterized in that described Location hole totally two.
4. a kind of templating production method of single side lamination soft-package battery according to claim 1, which is characterized in that described Rectangular recess and rectangular through-hole are rectangle.
5. a kind of templating production method of single side lamination soft-package battery according to claim 4, which is characterized in that described It is set on the inside of the long side of rectangular through-hole there are two the first protrusion, the short side inside of rectangular through-hole is equipped with first protrusion.
6. a kind of templating production method of single side lamination soft-package battery according to claim 5, which is characterized in that described Top board is rectangle, is set on the outside of the long side of top board there are two the second protrusion, and one the is equipped on the outside of the short side of top board Two protrusions.
7. a kind of templating production method of single side lamination soft-package battery according to claim 1, which is characterized in that described Step S1 the following steps are included:
1) positive mix, cathode powder and conductive agent powder drying for standby are taken;
2) 1) positive mix obtained, cathode powder and conductive agent powder are subjected to conjunction slurry respectively, anode sizing agent and cathode is made Slurry;
3) 2) anode sizing agent obtained and negative electrode slurry are subjected to collector coating respectively;
4) 3) plus plate current-collecting body after the completion of being coated with and negative current collector are dried;
5) by after 4) resulting product roller process, the positive plate and negative electrode tab that are not cut;
6) 5) the resulting positive plate that does not cut and negative electrode tab are punched into standard-sized positive plate and negative electrode tab;
7) 6) tab is respectively welded in resulting positive plate and negative electrode tab, drying for standby;
8) diaphragm is punched into standard size, drying for standby.
CN201811505490.5A 2018-12-10 2018-12-10 Template manufacturing method of single-sided laminated soft package battery Active CN109585936B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113370517A (en) * 2021-05-27 2021-09-10 成都宏明双新科技股份有限公司 Efficient clamp for pasting A film and B film and film pasting method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003203671A (en) * 2001-10-29 2003-07-18 Kyocera Corp Stacked cell and manufacturing method of the same
CN201163641Y (en) * 2007-04-09 2008-12-10 比亚迪股份有限公司 Clamper for battery lamination
CN202564490U (en) * 2012-03-01 2012-11-28 合肥国轩高科动力能源有限公司 Lithium battery lamination die
CN202839770U (en) * 2012-10-12 2013-03-27 中航锂电(洛阳)有限公司 Rubberizing and curing device for laminated battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003203671A (en) * 2001-10-29 2003-07-18 Kyocera Corp Stacked cell and manufacturing method of the same
CN201163641Y (en) * 2007-04-09 2008-12-10 比亚迪股份有限公司 Clamper for battery lamination
CN202564490U (en) * 2012-03-01 2012-11-28 合肥国轩高科动力能源有限公司 Lithium battery lamination die
CN202839770U (en) * 2012-10-12 2013-03-27 中航锂电(洛阳)有限公司 Rubberizing and curing device for laminated battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113370517A (en) * 2021-05-27 2021-09-10 成都宏明双新科技股份有限公司 Efficient clamp for pasting A film and B film and film pasting method

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