CN103682455A - Method for manufacturing square-round core aluminum-plastic membrane lithium ion battery for evaluating - Google Patents

Method for manufacturing square-round core aluminum-plastic membrane lithium ion battery for evaluating Download PDF

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Publication number
CN103682455A
CN103682455A CN201310645489.3A CN201310645489A CN103682455A CN 103682455 A CN103682455 A CN 103682455A CN 201310645489 A CN201310645489 A CN 201310645489A CN 103682455 A CN103682455 A CN 103682455A
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battery
aluminum
lithium
ion battery
core
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CN201310645489.3A
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CN103682455B (en
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郝德利
叶丽光
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Guizhou Batian New Energy Materials Co ltd
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TIANJIN HEWEI TECHNOLOGY CO LTD
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    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms 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
    • 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

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

Abstract

The invention discloses a method for manufacturing a square-round core aluminum-plastic membrane lithium ion battery for evaluating. An anode and a cathode prepared by a general method according of a lithium ion battery, then are coiled to form a round core, and are sealed into a square battery-grade aluminum plastic membrane bag, and an air chamber is reserved. The structural design avoids defects that a current battery structure is not easy to control an assembling ratio and assembling pressure when evaluating an electrode material and the material is not continuously tested because of bulge and leakage of the battery caused by gas generation, has performance suitable for evaluating various materials under different technologies, and has characteristics of low investment equipment cost.

Description

The manufacture method of square-circle core lithium-ion battery with aluminium plastic film for evaluation and test
Technical field
The invention discloses a kind of manufacture method of evaluating and testing with square-circle core lithium-ion battery with aluminium plastic film, belong to the innovation of the material evaluation and test technology of chemical energy storage technology.
Background technology
Lithium ion battery is since coming out the nineties in 20th century, always in fast development.The innovation of new type lithium ion battery electrode material, promotes performance of lithium ion battery and improves constantly.And the evaluation and test for material function characteristic is an important link in developing material process.Yet whether the function of evaluating and testing a kind of new material meets application request is consuming time, a consumption power job.
Conventionally, the method for evaluation and test electrode material functional characteristic is that electrode material is made to actual battery, then the performance of test battery is carried out the characteristic of reaction material.And in this method, there is many problems.Several version of existing lithium ion battery, comprise cylinder type steel housing battery, column type aluminum-shell battery, square box hat (or aluminum hull, mould shell) battery, polymer rectangular cell, column type aluminum plastic film battery, the battery of these structures is all not suitable as the evaluation and test of material.
If make cylinder type steel housing battery or column type aluminum-shell battery, the one, need the assembling ratio of accurate Calculation volume core, otherwise may can not do the unstable properties of battery or battery.And measured material is because often there is some uncertainty in development, cause the assembling of accurate Calculation volume core to compare possibility hardly, so need test of many times to grope, until find a suitable assembling ratio could more effectively evaluate and test material function characteristic; The 2nd, need the equipment of input more, invest larger; Requirement is abundant to main equipment operating experience, for the personnel that specialize in material development, is difficult for very fast grasp; The 3rd, if discharge more gas in testing of materials, can make safety valve on battery cover open and stop follow-up test.
If make square box hat (or aluminum hull, mould shell) battery, there is assembling than being not easy control, assembling pressure is wayward, the poor problem of consistency of data, runs into and in testing of materials, discharges more gas and can make battery bulging, cannot continue follow-up test.
If make polymer rectangular cell, although solved assembling than problem, run into and in testing of materials, discharge more gas and can make battery bulging, serious electrolyte leakage, also cannot continue follow-up test.
If use cylindrical aluminium plastic film battery structure, as patent 200510126420.5 cylindrical flexible packed lithium ion storage cell with aluminum-plastic composite film, the 200920026097.8 1 kinds of disclosed column type aluminum plastic film of cylindrical aluminum-plastic composite film flexible-packing lithium ion storage battery batteries of patent 200520136509.5 cylindrical flexible packed lithium ion storage cell with aluminum-plastic composite film and patent, can be reasonable solution assembling than and the problem of electrode material release gas, but just can easily not realize for the adjusting of electrolyte and the collection of battery release gas, therefore can not finely meet the requirement of material function evaluation and test.
The manufacture method of the present invention discloses square for a kind of evaluation and test-circle core lithium-ion battery with aluminium plastic film, it can avoid the shortcoming of existing battery aspect evaluation and test material function characteristic, again can small investment, meet the needs of evaluation and test material.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method of evaluating and testing with square-circle core lithium-ion battery with aluminium plastic film, the inside battery of making is a round core, outside is a square aluminum plastic film sack, and reservation air chamber, this structural design has been avoided above-mentioned series of problems, has that test data reliability is high, a high conformity, feature that used device cost is low.
The present invention is realized by the following technical programs, a kind of manufacture method of evaluating and testing with square-circle core aluminum plastic film battery, and the step of manufacture method is:
(1) the negative or positive electrode material preparation of needs evaluation and test is become to lithium ion cell positive or negative pole, welded aluminum plastic film battery lug;
(2) negative pole of standard or positive electrode are prepared accordingly and become the negative pole of lithium ion battery or positive pole, welded aluminum plastic film battery lug;
(3) barrier film, negative pole, barrier film, positive pole is stacked from top to bottom in order, positive and negative lug lays respectively at the both sides of barrier film, then on sutomatic winding machine, reel and become a circular roll core, negative pole will encase positive pole, barrier film encases negative pole, outermost layer is wound around 2 weeks with polyimides membrane adhesive tape and fixes, and avoids rolling up core and unclamps;
(4) LITHIUM BATTERY aluminum-plastic composite membrane of cutting, width is according to 1.5～1.8 times of barrier film width, length is according to 3.0～3.6 times of barrier film width, aluminum plastic film is folded in half into rear expansion along its length, volume core is placed on to folding line place, doubling encases volume core again, the long limit of aluminum-plastic composite membrane is equated to volume core end face distance, then with heat-sealing machine, two of aluminum-plastic composite membranes are sealed perpendicular to the side of rolling up the mandrel heart, edge sealing width is 1cm, with the good heat seal of lug, the aluminum-plastic composite membrane that is parallel to the volume mandrel heart is reserved to 1cm on one side not to be sealed as adding electrolyte reserved opening, all the other seal, edge sealing width is 1cm,
(5) satchel of sealing is put into drying box, 80 ℃ of forced air dryings 24 hours, cool to room temperature, move in the environment of relative humidity≤2%, by reserved opening on edge sealing, add lithium-ion battery electrolytes submergence volume core, with heat-sealing machine, reserved opening is sealed, obtain square-circle core aluminum plastic film battery for evaluation and test;
Described barrier film is polypropylene (PP) film with micropore, or has polyethylene (PE) film of micropore, or both laminated films of being combined into, and described electrolyte is LiPF 6, biethyl diacid lithium borate (LiBOB), LiBF 4be dissolved in ethylene carbonate (EC), propene carbonate (PC), diethyl carbonate (DEC), dimethyl carbonate (DMC), acetonitrile (AN) or a kind of solution of methyl ethyl carbonate (EMC) or multiple mixed solution.
Evaluation and test prepared by this method is a column type volume core 2 with square-circle core lithium-ion battery with aluminium plastic film inside, volume core 2 stretches out respectively anode ear 3 and negative electrode lug 4 to both sides, outside is the square bag 1 that the folding heat-sealing of an aluminum plastic film forms, and has formed an air chamber 5.To the battery of making charge, discharge, shelve, charging and discharging is evaluated the performance of negative or positive electrode material under full battery condition under different temperatures.
The invention has the advantages that, this structure adapts to various material evaluation and tests, and the compacted density under assessment different process, reservoir quantity, can observe γ-ray emission, in test process as inflatable occurs, still can evaluate and test material property, electric current distribution is even, and test data reliability is high, the high conformity of battery, can extract easily the gas of generation and analyze, the advantage of material, shortcoming can be reflected objectively simultaneously.
Accompanying drawing explanation
Fig. 1 evaluates and tests with square-circle core lithium-ion battery with aluminium plastic film structural representation.
1 aluminum-plastic composite membrane sack 2 cylindrical roll core 3 anode ear 4 negative electrode lug 5 air chambers.
Embodiment
Embodiment 1
Positive plate is made: by LiFePO 4, KS, SP, PVDF make the slurry of solid content 50% in the ratio of 90:2:2:6, paint surface density 300g/m on coating machine 2pole piece, through 110 ℃ of air blast, dry after 15 hours, take out the pole piece that is cut into 50 * 700mm, on twin rollers, pair roller becomes compacted density 2.20 g/m 3pole piece, aluminium pole ears on the ultrasonic bond of one end of pole piece.
Negative plate is made: FSN, SP, CMC, SBR are made to the slurry of solid content 40% in the ratio of 95:1:2:2, paint surface density 150g/m on coating machine 2pole piece, through 110 ℃ of air blast, dry after 15 hours, take out the pole piece that is cut into 57 * 800mm, on twin rollers, pair roller becomes compacted density 1.60g/m 3pole piece, at one end of pole piece some nickel lug of burn-oning.
By putting successively from top to bottom PE barrier film (25 μ m are thick, 60mm is wide), negative plate, barrier film, positive plate well, use Φ4mm volume pin coiling core, then with polyimides membrane adhesive tape, being wound around 2 weeks fixes, cut out LITHIUM BATTERY aluminum-plastic composite membrane 10 * 20cm, after being folded in half into 10 * 10cm along its length, aluminum plastic film launches, then volume core is placed on to folding line place, doubling encases volume core again, making to roll up core both ends of the surface and aluminum-plastic composite membrane Edge Distance is 2cm, then with heat-sealing machine, two of aluminum-plastic composite membranes are sealed perpendicular to the side of rolling up the mandrel heart, edge sealing width is 1cm, guarantee and the good heat seal of lug, the aluminum-plastic composite membrane that is parallel to the volume mandrel heart is reserved to 1cm on one side not to be sealed as adding electrolyte reserved opening, all the other seal, edge sealing width is 1cm, .And then 80 ℃ of air blast dry 24 hours, cool to room temperature, move in the environment of relative humidity≤2%, by liquid injection port, inject 1mol/L LiPF 6at EC:DMC:EMC mass ratio, be 3:1:1 electrolyte 15ml submergence volume core, sealing, obtain square-round core aluminum plastic film battery of 10 * 10cm.This battery is carried out to 0.1C charging, electric discharge, and test material is charging and discharging efficiency under full battery system.
 
Embodiment 2
The manufacture method of positive plate is with embodiment 1, and compacted density is 2.10 g/m 3, pole piece size 50 * 500mm.
The manufacture method of negative plate is with embodiment 1, pole piece size 57 * 550mm.
Coiling is with embodiment 1, LITHIUM BATTERY aluminum-plastic composite membrane is cut into 10 * 16cm size, according to same method encapsulation, oven dry in embodiment 1, move into again in the environment of relative humidity≤2%, by liquid injection port, injecting 1mol/L LiBOB is 3:1:1:1 electrolyte 10ml submergence volume core, sealing at EC:DMC:EMC:PC mass ratio, obtains square-round core aluminum plastic film battery of 10 * 8cm.
Embodiment 3
The manufacture method of positive plate is with embodiment 1, and compacted density is 2.40 g/m 3, pole piece size 50 * 500mm.
The manufacture method of negative plate is with embodiment 1, pole piece size 57 * 550mm.
By PP, PE composite diaphragm, the positive plate of putting successively from top to bottom barrier film, negative plate, 25 μ m well, use Φ4mm volume pin coiling core, is then fastened with adhesive tape, cuts out the aluminum-plastic composite membrane of 11 * 22cm, encapsulation and dry with embodiment 1, then move in the environment of relative humidity≤2%, by liquid injection port, inject 1mol/L LiBF 4at AN:DEC:EMC:GBL mass ratio, be 5:1:1:1 electrolyte 10ml submergence volume core, sealing, obtain square-round core aluminum plastic film battery of 11 * 11cm.

Claims (3)

1. evaluate and test the manufacture method with square-circle core lithium-ion battery with aluminium plastic film, it is characterized in that: preparation method's step is:
The negative or positive electrode material preparation of needs evaluation and test is become to lithium ion cell positive or negative pole, welded aluminum plastic film battery lug;
The negative pole of standard or positive electrode are prepared accordingly and become the negative pole of lithium ion battery or positive pole, welded aluminum plastic film battery lug;
Barrier film, negative pole, barrier film, positive pole is stacked from top to bottom in order, positive and negative lug lays respectively at the both sides of barrier film, then on sutomatic winding machine, reel and become a circular roll core, negative pole will encase positive pole, barrier film encases negative pole, outermost layer is wound around 2 weeks with polyimides membrane adhesive tape and fixes, and avoids rolling up core and unclamps;
LITHIUM BATTERY aluminum-plastic composite membrane of cutting, width is according to 1.5～1.8 times of barrier film width, length is according to 3.0～3.6 times of barrier film width, aluminum plastic film is folded in half into rear expansion along its length, volume core is placed on to folding line place, doubling encases volume core again, the long limit of aluminum-plastic composite membrane is equated to volume core end face distance, then with heat-sealing machine, two of aluminum-plastic composite membranes are sealed perpendicular to the side of rolling up the mandrel heart, edge sealing width is 1cm, with the good heat seal of lug, the aluminum-plastic composite membrane that is parallel to the volume mandrel heart is reserved to 1cm on one side not to be sealed as adding electrolyte reserved opening, all the other seal, edge sealing width is 1cm,
The satchel of sealing is put into drying box, and 80 ℃ of forced air dryings 24 hours, cool to room temperature, move in the environment of relative humidity≤2%, by reserved opening on edge sealing, add lithium-ion battery electrolytes submergence volume core, with heat-sealing machine, reserved opening is sealed, obtain square-circle core aluminum plastic film battery for evaluation and test.
2. the manufacture method of square for evaluation and test according to claim 1-circle core lithium-ion battery with aluminium plastic film, is characterized in that: described barrier film is the polypropylene film with micropore, or has the polyethylene film of micropore, or both laminated films of being combined into.
3. the manufacture method of square-circle core lithium-ion battery with aluminium plastic film for evaluation and test according to claim 1, is characterized in that: described lithium-ion battery electrolytes is LiPF 6, biethyl diacid lithium borate, LiBF 4be dissolved in a kind of solution of ethylene carbonate, propene carbonate, diethyl carbonate, dimethyl carbonate, acetonitrile or methyl ethyl carbonate or multiple mixed solution.
CN201310645489.3A 2013-12-05 2013-12-05 Evaluate and test the manufacture method with square-circle core lithium-ion battery with aluminium plastic film Active CN103682455B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109818066A (en) * 2017-11-19 2019-05-28 深圳格林德能源集团有限公司 A kind of novel power battery preparation method
CN112611634A (en) * 2020-12-18 2021-04-06 联动天翼新能源有限公司 Pole piece fracture evaluation method at positive tab of cylindrical lithium battery
CN112952207A (en) * 2021-03-03 2021-06-11 芜湖天弋能源科技有限公司 Soft package lithium ion battery cell packaging method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202358A (en) * 2007-12-03 2008-06-18 天津市航力源科技有限公司 Technological process for flexible packing lithium ion battery auxiliary device using the cylindrical form
CN102044706A (en) * 2010-12-19 2011-05-04 惠州市博能新能源有限公司 Method for preparing flexible packaging cylindrical lithium battery

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202358A (en) * 2007-12-03 2008-06-18 天津市航力源科技有限公司 Technological process for flexible packing lithium ion battery auxiliary device using the cylindrical form
CN102044706A (en) * 2010-12-19 2011-05-04 惠州市博能新能源有限公司 Method for preparing flexible packaging cylindrical lithium battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109818066A (en) * 2017-11-19 2019-05-28 深圳格林德能源集团有限公司 A kind of novel power battery preparation method
CN112611634A (en) * 2020-12-18 2021-04-06 联动天翼新能源有限公司 Pole piece fracture evaluation method at positive tab of cylindrical lithium battery
CN112952207A (en) * 2021-03-03 2021-06-11 芜湖天弋能源科技有限公司 Soft package lithium ion battery cell packaging method
CN112952207B (en) * 2021-03-03 2022-07-01 芜湖天弋能源科技有限公司 Soft package lithium ion battery cell packaging method

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Effective date of registration: 20220613

Address after: 550400 Weng'an Economic Development Zone, Yinzhan Town, Weng'an county, Qiannan Buyei and Miao Autonomous Prefecture, Guizhou Province

Patentee after: Guizhou batian new energy materials Co.,Ltd.

Address before: 300402 7th Street, yixingbu Industrial Zone, Beichen Science Park, Beichen District, Tianjin

Patentee before: TIANJIN HEWEI TECHNOLOGY Co.,Ltd.