CN109378412A - A kind of polymer Li-ion battery and its manufacturing method - Google Patents
A kind of polymer Li-ion battery and its manufacturing method Download PDFInfo
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- CN109378412A CN109378412A CN201811230794.5A CN201811230794A CN109378412A CN 109378412 A CN109378412 A CN 109378412A CN 201811230794 A CN201811230794 A CN 201811230794A CN 109378412 A CN109378412 A CN 109378412A
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Classifications
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of polymer ions battery and its manufacturing methods.Polymer Li-ion battery provided by the invention includes battery core and at least one layer of internal layer encapsulating film and at least one layer of outer envelope film for coating the battery core, wherein the internal layer encapsulating film is plastic film or composite plastic film, and the outer envelope film is aluminum-plastic composite membrane.Polymer Li-ion battery provided by the invention has better air-tightness and appearance, and battery performance is more guaranteed.The manufacturing method provided through the invention can guarantee that the edge sealing air-tightness qualification of battery packages outer layer and appearance are pollution-free bad, guarantee the performance of battery not penalty caused by by encapsulation poor prognostic cause.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of polymer Li-ion battery and its manufacturer
Method.
Background technique
It is increasingly depleted with conventional petroleum resource, and using global warming be the climatic issues of main feature to mankind's prestige
Coerce increasingly severe, new energy is gradually applied in people's lives.Energy-saving and environment-friendly New-energy electric vehicle is increasingly
One of optimal selection as people's trip.One of critical component as New-energy electric vehicle, power battery need higher
Energy density, safer performance and longer service life meet the usage experience of people, battery capacity is done greatly, is
Improve one of the effective way of single battery energy density.According to the textural classification of battery, lithium ion battery can be divided into square aluminium
Shell, cylindrical steel shell and polymer Li-ion battery, in this three kinds of lithium ion battery types, the energy of polymer Li-ion battery is close
Degree is maximum.The electric car for focusing on user experience, the demand to high-energy density battery is more more and more urgent, polymer Li-ion battery
With the maximum advantage of energy density, is gradually paid close attention to and used by people.
Traditional polymer lithium ion battery manufacture is encapsulated using aluminum-plastic composite membrane, plastic-aluminum after film-making assembling
Composite membrane is three-decker, i.e. outer layer: nylon layer, internal layer: cast polypropylene layer (CPP), middle layer: aluminium foil.The effect of aluminium foil
It is to play good water proof effect.Polymer battery can be used and be stored for a long time, will not be occurred because of the steam in environment
Infiltration causes inside battery that chemical reaction occurs and causes ballooning, but for high capacity polymer lithium ion battery, due to
Volume is larger, heavy, and after the encapsulation of single use aluminum-plastic composite membrane, intermediate aluminum plastic film, which is easy to happen, to be pulled open, and angle position rupture etc. is no
Good phenomenon causes aluminium foil corrosion, and battery is because being led to flatulence by steam infiltration, to the use of polymer Li-ion battery
The problems such as causing very big bad hidden danger, including being shortened there are security performance variation, service life.In addition, traditional polymer
There are bladder port exhaust, last edge sealing for the production technology of lithium ion battery.High capacity cell reservoir quantity is more, cannot absorb at once
Electrolyte, unabsorbed electrolyte can pollute the non-edge sealing of bladder port, make non-edge sealing in last sealing due to there is electrolyte dirty
Residue is contaminated, causes edge sealing insecure, air-tightness reduces, and is permeated and the flatulence that absorbs water, is caused by steam after battery is stored for a long time
The problems such as battery performance is deteriorated, service life shortens, it might even be possible to cause safety accident；Or the electrolyte overflowed is dirty
The plastic-aluminum combined film layer of outside batteries is contaminated, makes battery appearance is dirty to scrap.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the present invention provides a kind of novel polymer Li-ion electricity
The manufacturing method of pond and the polymer Li-ion battery.
In the first aspect, the present invention provides a kind of polymer Li-ion batteries comprising: battery core and the cladding electricity
At least one layer of internal layer encapsulating film of core and at least one layer of outer envelope film, wherein the internal layer encapsulating film is plastic film or modeling
Expect that composite membrane, the outer envelope film are aluminum-plastic composite membrane.According to the present invention, the battery core of polymer Li-ion battery have 2 layers or
Above individual packages wrapper, can make battery have better air-tightness and appearance, and battery performance is more guaranteed.
In some embodiments, the internal layer encapsulating film is plastic film, and the outer envelope film is aluminum-plastic composite membrane.
In other embodiments, the internal layer encapsulating film and the outer envelope film are aluminum-plastic composite membrane.Preferably, using modeling
Expect film as internal layer encapsulating film.
Embodiment according to the present invention, the internal layer encapsulating film have organic solvent resistance, heat sealability, air-tightness, soft
One of toughness and insulating properties or multiple performance preferably have organic solvent resistance, heat sealability, air-tightness, flexibility simultaneously
And insulating properties.The internal layer encapsulating film has organic solvent-resistant characteristic, is erosion of the electrolyte to internal layer encapsulating film in order to prevent.
The resistance to organic solvent Typical Representative of the internal layer encapsulating film is propene carbonate (PC), ethylene carbonate (EC), carbonic acid diethyl
One of ester (DEC), dimethyl carbonate (DMC) and methyl ethyl ester (EMC) or a variety of mixtures.The internal layer envelope
The dress good air-tightness of film can prevent the infiltration of air isoreactivity gas, play the role of first of isolation barrier to battery core.
There is the internal layer encapsulating film heat sealability and flexibility can guarantee that the processing performance of internal layer encapsulating film is good, easy to operate and not
Cracky plays the role of first of protective layer to battery core.The internal layer encapsulating film have insulating properties can prevent battery core because
Micro-short circuit problem caused by heat-sealing processing is bad.Internal layer encapsulating film of the invention uses the plastic film of single material, insulation
Performance is better than the encapsulating film of traditional polymer battery core, prevent battery core because heat-sealing manufacturing deficiency caused by encapsulated layer weather
The problem of leading to battery micro-short circuit, has good preventive effect.The outer envelope film should have good air-tightness, stretching
Intensity and anti-aging property.By being high vacuum state inside the outer envelope film after pumping sealing, outer envelope film it is airtight
Property can prevent the infiltrations of the gases such as outside air, and tensile strength and ageing resistance can preferably protect internal battery core, extend
Use the time.
Embodiment according to the present invention, the material of the internal layer encapsulating film include polypropylene (PP), polyethylene (PE), stream
Prolong one of polypropylene (CPP), polyvinyl chloride (PVC), polyethylene terephthalate (PET) and polycarbonate (PC) or
A variety of or its various modified material.
In some embodiments, the outer envelope film includes cast polypropylene film layer, the aluminium foil layer set gradually
And nylon layer, it is preferable that the outer envelope film include the cast polypropylene film layer set gradually, aluminium foil layer, nylon layer and
Laminated polyester film.Cast polypropylene film layer is with good organic solvent-resistant and has good heat sealability；Aluminium foil layer tool
There is good air-tightness, prevents the infiltration of the gases such as air；The polyester film high temperature resistant of outermost layer cladding can reach 250~350
DEG C, the deformation that outside batteries are scalded and processing is heated can be prevented.
In some embodiments, the capacity of the poly-lithium battery be 10-2000Ah, preferably 20-1000Ah, more
Preferably 20-500Ah.
In some embodiments, the internal layer encapsulating film with a thickness of 0.005-2mm, preferably 0.05-1mm.Some
In embodiment, the outer envelope film with a thickness of 0.05-0.35mm.
In the second aspect, the present invention also provides a kind of manufacturing methods of above-mentioned polymer Li-ion battery comprising:
Step S1 is packaged the battery core equipped with positive pole ear and negative lug with internal layer encapsulating film, then carries out true
Sky baking, fluid injection seals in advance, be melted intos and forming processes, and the polymer end product battery core for using the encapsulation of internal layer encapsulating film is obtained；
Step S2 is packaged the polymer end product battery core encapsulated with internal layer encapsulating film with outer envelope film, so
After carry out shaping, obtain polymer end product battery.
According to some embodiments of the manufacturing method, the naked battery core equipped with positive pole ear and negative lug passes through
The method preparation included the following steps:
1) positive plate, negative electrode tab and interlayer diaphragm are assembled into naked battery core by winding or lamination process,
2) positive pole ear of gel will be had on the anode ultrasonic wave or laser welding of naked battery core,
3) negative lug of gel will be had on the cathode ultrasonic wave or laser welding of naked battery core.
According to some embodiments of the manufacturing method, the condition of step S1 and the encapsulation in step S2 are as follows: temperature is
100-300 DEG C, preferably 130-250 DEG C, pressure 0.05-0.5MPa, preferably 0.1-0.3MPa, time are 1-10 seconds, preferably 2-5
Second.
According to some embodiments of the manufacturing method, step S1 includes:
1) the naked battery core for being welded with the positive pole ear with gel and negative lug is subjected to closedtop, side with internal layer encapsulating film
Moisture removal is removed in envelope, then vacuum bakeout drying；
2) battery core after step 1) removes moisture removal is carried out to fluid injection, imbibition, pumping and pre- under low temperature and low humidity degree environment
Sealing；
3) battery core after step 2) in advance sealing is subjected under low moisture environments pressing jig formation charging activation, be then evacuated
Sealing molding, is made the polymer end product battery core.
According to some embodiments of the manufacturing method, step S2 includes:
4) it will up be converted into square together with tab at polymer end product battery core closedtop, and stretches out anode ear and negative electrode lug；
5) positive pole ear of gel will be had on the anode ultrasonic wave or laser welding of polymer end product battery core；
6) negative lug of gel will be had on the cathode ultrasonic wave or laser welding of polymer end product battery core；
7) the polymer end product battery core that positive and negative tab is welded is put into and rushes shell at carrying out in the outer envelope film of bag in advance
Polymer end product battery is made through trimming shaping in three edge sealings, finally pumping sealing.
According to some embodiments of the manufacturing method, the low-humidity environment is relative humidity≤1%, ambient dew point
Lower than -40 DEG C, preferred ambient dew point is lower than -60 DEG C of environment.Preferably, the low-humidity environment passes through desiccant dehumidification system pair
Air in opposite closed environment carries out dehumidification treatments, or pure inert gas acquisition is filled in closed environment.Battery is first
Secondary encapsulation completes and carries out production operation before sealing shaping under low-humidity environment, and confirmation is completed and sealed by primary encapsulation
After shaping, battery still can carry out secondary encapsulation in no waterproof, vapour interlayer, and secondary encapsulation can be primary envelope
It fills micro-air that is not close and entering inside battery internal layer encapsulating film to extract out again, battery is made to reach an ideal encapsulation gas
Close effect.
In some embodiments, three bandings dress is encapsulated as described in step S2；With outer envelope film to step S1 processing
Battery core afterwards is packaged.Encapsulation described in step S2 is individual packages, rather than is overlapped on encapsulated layer described in step S1.
According to some embodiments, the manufacturing method includes the following steps sequentially carried out:
1, by the positive plate of polymer battery (1), cathode pole piece (2) and interlayer diaphragm (3) by winding or lamination process,
Naked battery core (4) are assembled into, the anode ear (5) of gel will be had in naked battery core anode ultrasonic wave obtained or laser welding,
The negative lug (6) of gel is had on cathode ultrasonic wave or laser welding；
2, it is pushed up using the internal layer encapsulating film (7) of a thickness 0.005-2.00mm, side sealing, poison ivy mouth,
Package temperature is pressure 0.1-0.3MPa between 100-300 DEG C, and the time is 1-10 seconds；
3, above-mentioned packaged battery core (4) is subjected to vacuum bakeout drying (being such as dried in vacuo at 85 DEG C), removed battery core (4)
Intracorporal micro hydropower；
4, (< -60 DEG C of ambient dew point) it need to be shifted, fluid injection, standing, be sealed in advance under low dew point environment when taking out battery core
Mouthful；
5, battery core is transferred to a seal chamber, it is intracavitary to be full of < -60 DEG C of dew point of inert gas and ambient humidity requirement, it is used in combination
Battery clamping is carried out charging chemical conversion by clamping plate；
6, chemical conversion finishes, and is evacuated in low-humidity environment, is sealed, trimming, and the manufacture of finished product battery core is completed；
7, finished product battery core can carry out the second encapsulation process (secondary encapsulation) in conventional environment, outer at one layer of battery core outer enclosure
Layer encapsulating film (9).
Beneficial effects of the present invention are as described below.
The encapsulated layer of polymer Li-ion battery of the invention is at least two layers；First layer (internal layer) using plastic film or
Person's composite plastic film, the second layer (outer layer) they are aluminum-plastic composite membrane, and battery was completed before formation charging using first layer encapsulation, to
After battery completes sealing trimming, then a kind of manufacture of second layer encapsulation is carried out, after confirmation encapsulates for the first time, battery exists
There is no that secondary encapsulation still can be carried out when waterproof, vapour interlayer.By the pre-packaged processing of first layer, even if the envelope once encapsulated
Side air-tightness reduces or encapsulated layer external contamination, after the wiping processing to contaminated outer layer, then carries out second layer outer layer
The encapsulation of encapsulating film, it is ensured that the edge sealing air-tightness qualification and appearance of cell package outer layer are pollution-free bad, guarantee battery
Performance not by encapsulation poor prognostic cause caused by penalty.
Detailed description of the invention
Fig. 1 is the positive and negative anodes lamination preparation structure figure of polymer Li-ion battery according to the present invention.
Fig. 2 is the battery core schematic diagram of polymer Li-ion battery according to the present invention.
Fig. 3 is the internal layer package drawing of polymer Li-ion battery according to the present invention.
Fig. 4 is that the finished product battery core of polymer Li-ion battery according to the present invention is converted into rectangular schematic diagram (8).
Fig. 5 is the outer envelope figure (9) of polymer Li-ion battery according to the present invention.
Fig. 6 is the cross-sectional view of polymer Li-ion battery according to the present invention.
In the accompanying drawings, identical component is indicated by identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Appended drawing reference: 1- positive plate, 2- negative electrode tab, 3- interlayer diaphragm, the naked battery core of 4-, 5- have the anode ear of gel,
6- has the negative electrode lug of gel, 7- internal layer encapsulating film, and 8- is converted into rectangular polymer end product battery core, 9- outer envelope film.
Specific embodiment
To be readily appreciated that the present invention, the present invention is described more detail below.But before describing the present invention in detail, it should be understood that
The present invention is not limited to the specific embodiments of description.It is also understood that term used herein is only for description specific implementation
Mode, and be not offered as restrictive.
In the case where providing numberical range, it should be understood that in the upper and lower bound of the range and the prescribed limit
Any other regulation or between two parties each of between numerical value numerical value is encompassed by the present invention between two parties.These small range of upper limits
It can independently be included in lesser range with lower limit, and be also covered by the present invention, obey any clear in prescribed limit
The limit of exclusion.Defined range include one or two limit in the case where, exclude any of the limit that those include or
The range of the two is also included in the present invention.
Unless otherwise defined, all terms used herein and those skilled in the art's is usual
Understand meaning having the same.Although similar or equivalent any method and material can also with method described herein and material
To use in implementation or test of the invention, but preferred method and material will now be described.
Embodiment 1:
The preparation of positive plate: with stratiform transition metal oxide lithium salts LiMO2(M=Co, Ni, Mn etc. or its multiplexed combination
Compound) such as LiNi1/3Co1/3Mn1/3O2Or LiFePO4For positive electrode active materials, its ratio be the 95% of powder content, with poly- inclined
Vinyl fluoride is binder, and content 2.5%, conductive agent is carbon nanotube and content of carbon black is 2.5%, and above-mentioned material is added to
It is stirred evenly in N-Methyl pyrrolidone (NMP), slurry is made, anode sizing agent is uniformly coated in the anode with carbon dust
In current collector aluminum foil, it is cut into the size of process stipulation after drying compacting, obtains anode pole piece.
The preparation of negative electrode tab: using artificial graphite as negative electrode active material, its ratio be the 95% of powder content, with butylbenzene rubber
Glue (SBR) is binder, and content 2%, sodium carboxymethylcellulose (CMC) and thickener, content 2%, conductive agent are
Content of carbon black is 1%, and above-mentioned material is add to deionized water and is stirred evenly, and is fabricated to negative electrode slurry, and negative electrode slurry is equal
Even is coated on negative current collector copper foil, and the size of process stipulation is cut into after drying compacting, obtains cathode pole piece.
The preparation of diaphragm: the compound substrate membranes of polypropylene and polyethylene coat the ceramic mixtures such as Kynoar and aluminium oxide
Or a strata vinylidene is coated with as diaphragm after first coating the ceramic layers such as one layer of aluminium oxide on compound substrate membranes.
The preparation of electrolyte: being the lithium hexafluoro phosphate (LiPF of 1M with concentration6) it is lithium salts, with propene carbonate (PC), carbon
The mixture of vinyl acetate (EC) and dimethyl carbonate (DMC) is solvent, propene carbonate (PC), ethylene carbonate (EC) and carbon
Dimethyl phthalate (DMC) weight ratio is PC:EC:DMC=1:1:1, adds the electrolysis additive ethylene carbonate of 1wt%
(VC)。
The preparation of battery core component: positive and negative after the cathode according to made from previous process, diaphragm, anode are sequentially overlapped
Pole pole piece is separated with diaphragm, the battery core as made from lamination process.
The preparation of high capacity polymer lithium ion battery: pole will be had in obtained battery core anode ultrasonic wave or laser welding
The anode ear of ear glue has the negative lug of gel on cathode ultrasonic wave or laser welding, by a kind of material of internal layer
Matter is polypropylene (PP) battery pack core of 0.10mm, carries out first time encapsulation, and package temperature is 180 DEG C, pressure 0.3MPa,
Time is 2 seconds, and relative humidity is≤1%, and dew point is -60 DEG C；It will be injected after the primary battery core baking removal moisture content encapsulated
Electrolyte, through processes such as chemical conversion, two envelopes and after Shape correction, then by finished product battery core closedtop together with tab the up side of being converted into
Type, and anode ear and negative electrode lug are stretched out, with the positive pole ear and negative lug for having gel on ultrasonic wave or laser welding, dress
Enter to rush shell at bag aluminum-plastic composite membrane (internal layer of aluminum-plastic composite membrane be cast polypropylene film, middle layer is aluminium foil layer, and outer layer is Buddhist nun
Imperial layer) carry out second and encapsulate, package temperature is 175 DEG C, pressure be 2 seconds the 0.3MPa time, relative humidity is≤40%, system
It obtains large capacity and polymerize lithium ion finished battery.
Embodiment 2
Unlike the first embodiment；The preparation of high capacity polymer lithium ion battery: by obtained battery core anode ultrasonic wave
Or the anode ear of gel is had in laser welding, the negative lug of gel is had on cathode ultrasonic wave or laser welding,
By polyethylene (PE) the battery pack core for being 0.1mm with a kind of material in internal layer, carry out carrying out first time encapsulation, package temperature
It is 140 DEG C, pressure 0.3MPa, the time is 1 second, and relative humidity is≤1%, and dew point is -60 DEG C；By the primary electricity encapsulated
Electrolyte is injected after core baking removal moisture content, after the processes such as chemical conversion, two envelopes and Shape correction, then will be connected at finished product battery core closedtop
Tab is up converted into square together, and stretches out anode ear and negative electrode lug, is having gel just on ultrasonic wave or laser welding
Pole tab and negative lug, be packed into rush shell at bag aluminum-plastic composite membrane (internal layer of aluminum-plastic composite membrane be cast polypropylene film, in
Layer is aluminium foil layer, and outer layer is nylon layer) second of encapsulation is carried out, package temperature is 175 DEG C, pressure 0.3MPa, the time 2
Second, relative humidity is≤40%, and large capacity is made and polymerize lithium ion battery.
Remaining is with embodiment 1, and which is not described herein again.
Embodiment 3
Unlike the first embodiment；The preparation of high capacity polymer lithium ion battery: by obtained battery core anode ultrasonic wave
Or the anode ear of gel is had in laser welding, the negative lug of gel is had in the welding of cathode ultrasonic wave, is passed through
Cast polypropylene film (CPP) the battery pack core for being 0.1mm with a kind of material in internal layer carries out first time encapsulation, encapsulation temperature
Degree is 175 DEG C, pressure 0.3MPa, and the time is 2 seconds, and relative humidity is≤1%, and dew point is -60 DEG C；This primary was encapsulated
Electrolyte is injected after battery core baking removal moisture content, after the processes such as chemical conversion, two envelopes and Shape correction, then will be at finished product battery core closedtop
It is up converted into square together with tab, and stretches out anode ear and negative electrode lug, with having gel on ultrasonic wave or laser welding
Positive pole ear and negative lug, be packed into rush shell at bag aluminum-plastic composite membrane (internal layer of aluminum-plastic composite membrane be cast polypropylene film,
Middle layer is aluminium foil layer, and outer layer is nylon layer) second of encapsulation is carried out, package temperature is 175 DEG C, pressure 0.3MPa, the time 2
Second, relative humidity is≤40%, and large capacity is made and polymerize lithium ion battery.
Remaining is with embodiment 1, and which is not described herein again.
Embodiment 4
Unlike the first embodiment；The preparation of high capacity polymer lithium ion battery: by obtained battery core anode ultrasonic wave
Welding on have the anode ear of gel, the negative lug of gel is had in the welding of cathode ultrasonic wave, by inside
Polyethylene terephthalate (PET) battery pack core that layer is 0.1mm with a kind of material carries out first time encapsulation, encapsulation
Temperature is 260 DEG C, pressure 0.3MPa, and the time is 2 seconds, and relative humidity is≤1%, and dew point is -60 DEG C；This primary was encapsulated
Battery core baking removal moisture content after inject electrolyte, through processes such as chemical conversion, two envelopes simultaneously after Shape correction, then by finished product battery core closedtop
Place is up converted into square together with tab, and stretches out anode ear and negative electrode lug, on ultrasonic wave or laser welding have gel
Positive pole ear and negative lug, be packed into rush shell at bag aluminum-plastic composite membrane (internal layer of aluminum-plastic composite membrane be cast polypropylene it is thin
Film, middle layer are aluminium foil layer, and outer layer is nylon layer) second of encapsulation is carried out, package temperature is 175 DEG C, pressure 0.3MPa, the time
It is 2 seconds, relative humidity is≤40%, and large capacity is made and polymerize lithium ion battery.
Remaining is with embodiment 1, and which is not described herein again.
Embodiment 5
Unlike the first embodiment；The preparation of high capacity polymer lithium ion battery: by obtained battery core anode ultrasonic wave
Welding on have the anode ear of gel, the negative lug of gel is had in the welding of cathode ultrasonic wave, by inside
The aluminum-plastic composite membrane battery pack core that layer is 0.1mm with a kind of material carries out three bandings dress for the first time, and package temperature is 175 DEG C,
Pressure is 0.3MPa, and the time is 2 seconds, and relative humidity is≤1%, and dew point is -60 DEG C；The primary battery core baking encapsulated is gone
Except injecting electrolyte after moisture content, after the processes such as chemical conversion, two envelopes and Shape correction, then by finished product battery core closedtop together with tab
Up be converted into square, and stretch out anode ear and negative electrode lug, on ultrasonic wave or laser welding have gel positive pole ear and
Negative lug, be packed into rush shell at bag aluminum-plastic composite membrane (internal layer of aluminum-plastic composite membrane be cast polypropylene film, middle layer is aluminium foil
Layer, outer layer is nylon layer) second of encapsulation is carried out, package temperature is 175 DEG C, pressure 0.3MPa, and the time is 2 seconds, relatively wet
Degree is≤40%, and large capacity is made and polymerize lithium ion battery.
Embodiment 6
The internal layer of aluminum-plastic composite membrane is cast polypropylene film unlike the first embodiment, intermediate two layers for aluminium foil layer and
Nylon layer, outermost layer are polyester film.
Comparative example 1
Unlike the first embodiment；The preparation of high capacity polymer lithium ion battery: by obtained battery core anode ultrasonic wave
Or the anode ear of gel is had in laser welding, the negative lug of gel is had on cathode ultrasonic wave or laser welding,
Directly naked battery core dress aluminum-plastic composite membrane (with a thickness of 0.15mm) is packaged, package temperature is 175 DEG C, pressure 0.3MPa,
Time is 2 seconds, and relative humidity is≤1%, and dew point is -60 DEG C；Electrolyte is injected after baking removal moisture content, through chemical conversion, two envelopes etc.
Large capacity is made after process and Shape correction and polymerize lithium ion battery.
Remaining is with embodiment 1, and which is not described herein again.
To the high capacity polymer lithium ion battery of embodiment 1 to 6, capacity can achieve 100~2000Ah, be much higher than
The capacity of the polymer Li-ion battery of current process technology production.To the high capacity polymer lithium ion battery of embodiment 1 to 6
High humidity environment do loop test, specifically carry out constant-current constant-voltage charging to 4.2V with the electric current of 1C, constant pressure to 0.05C is used
The electric current of 1C carries out discharging into 3.0V, more than repetitive cycling acts, until battery capacity decays to the 80% of rated capacity, as a result
Such as the following table 1.
Table 1
| Group | Cycle life | Flatulence |
| Comparative example 1 | 1200 times | Fail flatulence after circulation |
| Embodiment 1 | 2000 times | It is normal after circulation |
| Embodiment 2 | 2000 times | It is normal after circulation |
| Embodiment 3 | 2000 times | It is normal after circulation |
| Embodiment 4 | 2000 times | It is normal after circulation |
| Embodiment 5 | 2000 times | It is normal after circulation |
| Embodiment 6 | 2000 times | It is normal after circulation |
From showing in embodiment 1-6 in table, battery equal not flatulence in high humidity loop test, and it is each functional, and
There are the bad phenomenons such as capacity attenuation is too fast, and flatulence is serious, thus in the comparative example battery for not passing through a secondary internal layer packaging protection
It is found that the present invention can greatly improve the service life and security performance of large-scale lithium-ion-power cell.
It should be noted that embodiment described above for explaining only the invention, is not constituted to of the invention any
Limitation.By referring to exemplary embodiments, invention has been described, it should be appreciated that word used in it is descriptive
With explanatory vocabulary, rather than limited vocabulary.The present invention can be made within the scope of the claims by regulation
Modification, and the present invention is revised in without departing substantially from scope and spirit of the present invention.Although the present invention described in it relates to
And specific method, material and embodiment, it is not intended that the present invention is limited to particular case disclosed in it, on the contrary, this hair
It is bright to can be extended to other all methods and applications with the same function.
Claims (11)
1. a kind of polymer Li-ion battery comprising: battery core and at least one layer of internal layer encapsulating film and extremely for coating the battery core
Few one layer of outer envelope film, wherein the internal layer encapsulating film is plastic film or composite plastic film, and the outer envelope film is aluminium
Mould composite membrane.
2. polymer Li-ion battery according to claim 1, which is characterized in that the internal layer encapsulating film has resistance to organic
Solvent borne, heat sealability, air-tightness, flexibility and insulating properties；Preferably, the organic solvent includes propene carbonate (PC), carbon
One of vinyl acetate (EC), diethyl carbonate (DEC), dimethyl carbonate (DMC) and methyl ethyl ester (EMC) are more
The mixture of kind；The material of the internal layer encapsulating film includes polypropylene (PP), polyethylene (PE), cast polypropylene (CPP), polychlorostyrene
One of ethylene (PVC), polyethylene terephthalate (PET) and polycarbonate (PC) or a variety of or its various modified material
Material.
3. polymer Li-ion battery according to claim 1 or 2, which is characterized in that the outer envelope film include according to
Cast polypropylene film layer, aluminium foil layer and the nylon layer of secondary setting, it is preferable that the outer envelope film includes the stream set gradually
Prolong layer of polypropylene foil, aluminium foil layer, nylon layer and laminated polyester film.
4. polymer Li-ion battery according to any one of claim 1-3, which is characterized in that the internal layer encapsulating film
With a thickness of 0.005-2.00mm, preferably 0.05-1.00mm；The outer envelope film with a thickness of 0.05-0.35mm.
5. polymer Li-ion battery described in any one of -4 according to claim 1, which is characterized in that the polymer lithium from
The capacity of sub- battery is 10-2000Ah, preferably 20-1000Ah, more preferably 20-500Ah.
6. the manufacturing method of polymer Li-ion battery according to any one of claims 1-5 comprising:
Step S1 is packaged the battery core equipped with positive pole ear and negative lug with internal layer encapsulating film under low-humidity environment,
Then vacuum bakeout, fluid injection are carried out under low-humidity environment seal, be melted into and forming processes in advance, obtain using the encapsulation of internal layer encapsulating film
Polymer end product battery core；
Step S2 carries out pumping encapsulation to the finished product battery core encapsulated with internal layer encapsulating film with outer envelope film, then carries out
Shaping obtains polymer end product battery.
7. manufacturing method according to claim 6, which is characterized in that the naked electricity equipped with positive pole ear and negative lug
Core is prepared by a method comprising the following steps:
1) positive plate, negative electrode tab and interlayer diaphragm are assembled into naked battery core by winding or lamination process,
2) positive pole ear of gel will be had on the anode ultrasonic wave or laser welding of naked battery core,
3) negative lug of gel will be had on the cathode ultrasonic wave or laser welding of naked battery core.
8. manufacturing method according to claim 6 or 7, which is characterized in that the condition of step S1 and the encapsulation in step S2
Are as follows: temperature is 100-300 DEG C, preferably 130-250 DEG C, pressure 0.05-0.5MPa, preferably 0.1-0.3MPa, time 1-10
Second, preferably 2-5 seconds.
9. manufacturing method a method according to any one of claims 6-8, which is characterized in that step S1 includes:
1) the naked battery core for being welded with the positive pole ear with gel and negative lug is subjected to closedtop, side seal with internal layer encapsulating film,
Airbag mouth is reserved, moisture removal is removed in then vacuum bakeout drying；
2) battery core after step 1) removes moisture removal is carried out to fluid injection, imbibition, the pre- sealing of pumping under low temperature and low-humidity environment；
3) battery core after step 2) in advance sealing is subjected under low moisture environments pressing jig and clamps formation charging, then cut airbag
Mouth, pumping sealing molding, are made the polymer end product battery core.
10. the manufacturing method according to any one of claim 6-9, which is characterized in that step S2 includes:
4) it will up be converted into square together with tab at finished product battery core closedtop, and stretches out anode ear and negative electrode lug；
5) positive pole ear of gel will be had on the anode ultrasonic wave or laser welding of finished product battery core；
6) negative lug of gel will be had on the cathode ultrasonic wave or laser welding of finished product battery core；
7) will be welded with gel positive and negative tab finished product battery core put into advance rush shell in the outer envelope film of bag into
Three edge sealing of row, finally pumping sealing, through trimming shaping, is made the polymer end product battery.
11. the manufacturing method according to any one of claim 6-10, which is characterized in that the low temperature is 10-30 DEG C, institute
Stating low-humidity environment is relative humidity≤1%, and ambient dew point is lower than -40 DEG C, and preferred ambient dew point is lower than -60 DEG C of environment；It is excellent
Selection of land, the low-humidity environment carry out dehumidification treatments to the air in opposite closed environment by desiccant dehumidification system, or close
Closed loop is filled with pure inert gas acquisition within the border.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534811A (en) * | 2019-09-04 | 2019-12-03 | 梅州市量能新能源科技有限公司 | A kind of preparation method of soft bag lithium ionic cell |
| CN111403814A (en) * | 2020-03-26 | 2020-07-10 | 深圳市量能科技有限公司 | Sealing method and device for polymer lithium ion battery |
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| WO2021143514A1 (en) * | 2020-01-13 | 2021-07-22 | 比亚迪股份有限公司 | Battery, battery pack and electric vehicle |
| CN113296007A (en) * | 2021-05-28 | 2021-08-24 | 苏州速安行新能源科技有限公司 | Battery welding detection method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201528017U (en) * | 2009-09-29 | 2010-07-14 | 佛山市顺德区精进能源有限公司 | Lithium ion battery structure |
| CN102646813A (en) * | 2012-03-28 | 2012-08-22 | 重庆永通信息工程实业有限公司 | Manufacturing method of lithium titanate lithium ion battery |
| CN202575071U (en) * | 2012-05-11 | 2012-12-05 | 华东理工大学 | Lithium battery flexible packaging material with interlayer-structure |
| CN203690354U (en) * | 2014-01-02 | 2014-07-02 | 东莞市卓高电子科技有限公司 | Aluminum soft packaging film for lithium ion battery |
| CN205028959U (en) * | 2015-10-10 | 2016-02-10 | 东莞市卓越新材料科技有限公司 | Slim resistant plastic -aluminum membrane |
| CN107425147A (en) * | 2016-07-28 | 2017-12-01 | 南亚塑胶工业股份有限公司 | Packaging material for aluminum plastic film of lithium battery |
| CN209266446U (en) * | 2018-10-22 | 2019-08-16 | 北京环宇东方聚能科技有限公司 | A kind of polymer Li-ion battery |
-
2018
- 2018-10-22 CN CN201811230794.5A patent/CN109378412A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201528017U (en) * | 2009-09-29 | 2010-07-14 | 佛山市顺德区精进能源有限公司 | Lithium ion battery structure |
| CN102646813A (en) * | 2012-03-28 | 2012-08-22 | 重庆永通信息工程实业有限公司 | Manufacturing method of lithium titanate lithium ion battery |
| CN202575071U (en) * | 2012-05-11 | 2012-12-05 | 华东理工大学 | Lithium battery flexible packaging material with interlayer-structure |
| CN203690354U (en) * | 2014-01-02 | 2014-07-02 | 东莞市卓高电子科技有限公司 | Aluminum soft packaging film for lithium ion battery |
| CN205028959U (en) * | 2015-10-10 | 2016-02-10 | 东莞市卓越新材料科技有限公司 | Slim resistant plastic -aluminum membrane |
| CN107425147A (en) * | 2016-07-28 | 2017-12-01 | 南亚塑胶工业股份有限公司 | Packaging material for aluminum plastic film of lithium battery |
| CN209266446U (en) * | 2018-10-22 | 2019-08-16 | 北京环宇东方聚能科技有限公司 | A kind of polymer Li-ion battery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534811A (en) * | 2019-09-04 | 2019-12-03 | 梅州市量能新能源科技有限公司 | A kind of preparation method of soft bag lithium ionic cell |
| WO2021143514A1 (en) * | 2020-01-13 | 2021-07-22 | 比亚迪股份有限公司 | Battery, battery pack and electric vehicle |
| CN111403814A (en) * | 2020-03-26 | 2020-07-10 | 深圳市量能科技有限公司 | Sealing method and device for polymer lithium ion battery |
| CN113841275A (en) * | 2020-10-23 | 2021-12-24 | 宁德新能源科技有限公司 | Battery and electronic device |
| WO2022082707A1 (en) * | 2020-10-23 | 2022-04-28 | 宁德新能源科技有限公司 | Battery and electronic device |
| CN112635876A (en) * | 2020-12-31 | 2021-04-09 | 远景动力技术(江苏)有限公司 | Battery packaging structure, soft package lithium ion battery comprising battery packaging structure and preparation method |
| CN113296007A (en) * | 2021-05-28 | 2021-08-24 | 苏州速安行新能源科技有限公司 | Battery welding detection method |
| CN113871687A (en) * | 2021-09-26 | 2021-12-31 | 蜂巢能源科技有限公司 | Low-gas-production battery and preparation method thereof |
| CN113871687B (en) * | 2021-09-26 | 2023-01-24 | 蜂巢能源科技有限公司 | Low-gas-production battery and preparation method thereof |
| CN114597524A (en) * | 2022-03-21 | 2022-06-07 | 芜湖天弋能源科技有限公司 | Lithium battery formation equipment |
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