CN105591160A - Method for verifying package reliability of soft-package battery - Google Patents

Method for verifying package reliability of soft-package battery Download PDF

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Publication number
CN105591160A
CN105591160A CN201610037226.8A CN201610037226A CN105591160A CN 105591160 A CN105591160 A CN 105591160A CN 201610037226 A CN201610037226 A CN 201610037226A CN 105591160 A CN105591160 A CN 105591160A
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China
Prior art keywords
plastic film
package
soft
heat
aluminum plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610037226.8A
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Chinese (zh)
Inventor
关成善
宗继月
张敬捧
王勇
李涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd
Original Assignee
SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd filed Critical SHANDONG FINE ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN201610037226.8A priority Critical patent/CN105591160A/en
Publication of CN105591160A publication Critical patent/CN105591160A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
    • 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

Abstract

A method for verifying package reliability of a soft-package battery comprises steps as follows: firstly, an aluminum-plastic film material is cut and then folded, one side is packaged by adhesive tab pieces, the other side is subjected to direct side seal, then a certain amount of electrolyte is injected, high-temperature placement is performed after packaging, liquid-state heat seal is performed close to the folded part, high-temperature placement is performed again, finally, package tension is detected by a detection piece with the width being 15 mm plus/minus 1 mm, and a battery package is judged to be qualified when the tension is larger than or equal to 34.5 N. The matching feasibility of aluminum-plastic films with tab materials, technologies and equipment can be characterized quickly, directly and actually with the method.

Description

A kind of method of verifying soft-package battery package reliability
Technical field
The invention belongs to technical field of lithium batteries, particularly a kind of method of verifying soft-package battery package reliability.
Background technology
Along with soft bag lithium ionic cell the extensive use in power field and soft bag lithium ionic cell technology constantlyMaturation, people propose the security of harsher requirement, especially soft bag lithium ionic cell and make soft bag lithium ionic cellUse the life-span. In soft bag lithium ionic cell development process, soft bag lithium ionic cell external packing aluminum plastic film composite and bandGlue lug is more and more diversified, and aluminum-plastic composite membrane skin is Fypro material or PETG material,And combination process and difference in material properties between composite bed are large, different materials need be to there being no heat-seal technique, and this justNeed to possess good supplied materials stability and stabilization of equipment performance, and most of producer supplied materials and equipment can not possess simultaneously simultaneouslyGood stability, one slightly changes the package reliability that will affect soft bag lithium ionic cell, certainly will affect the peace of batteryFull performance and used life.
Soft bag lithium ionic cell preparation manufacturer, each aluminum plastic film material change all needs to do supplied materials, technique and equipmentCoupling checking, in soft bag lithium ionic cell preparation process, package thickness is measured the thermal deformation that only represents aluminum plastic film, can not illustratePackaging effect, can not characterize the soft bag lithium ionic cell external packing life-span. Flexible packing lithium ion battery can not be direct in producingJudge the packaging effect of soft bag lithium ionic cell by measurement.
Summary of the invention
The object of this invention is to provide a kind of method of soft bag lithium ionic cell package reliability, the technical problem that solveBe to find rational soft bag lithium ionic cell packaging and testing method, test heat seal strength after treatment as investigation amount taking aluminum plastic film,Characterize more fast, directly and really the feasibility that aluminum plastic film and ear pole material, technique are mated with equipment, above-mentioned in order to realizeObject, technical scheme of the present invention is:
A method of verifying soft-package battery package reliability, is characterized in that: first aluminum plastic film material is cut out to (A ± 1) *(B ± 1) mm size, is then folded in half into the aluminum plastic film cutting (A ± 1) * (1/2B ± 1) mm size. Prepare to produce to use simultaneouslyDetect qualified band glue lug sheet, both positive and negative polarity band glue lug sheet short end parcel high temperature gummed tape, is fixed on aluminum plastic film one side, establishes with closedtopStandby heat-sealing, closedtop prints with positive pole ear sheet blob of viscose connecting portion and is labeled as a1, closedtop prints and is connected with negative lug sheet blob of viscosePart mark is a2. Aluminum plastic film opposite side seals with side seal machine, and heat-sealing prints part and is labeled as b.
Under fluid injection room dry environment, will in aluminium plastic bag after the heat-sealing of both sides, inject (1/10000) * A*B ± 0.1g electrolyte,After unnecessary aluminium plastic bag gas is discharged, carry out the encapsulation of aluminium plastic bag oral area, heat-sealing prints part and is labeled as c. By packaged aluminum plastic film 60Under ± 3 DEG C of environment, tiling is shelved after 24h, seals with secondary sealing machine near aluminum plastic film folded part, and heat-sealing prints part markBe designated as d.
After heat-sealing, carry out again tiling under 60 ± 3 DEG C of environment and shelve after 24h, oral area seal c is cut off, bleed off electrolyte, cutGet test pieces 1,2,3 ... 11, test pieces wide cut 15 ± 1mm, carries out tensile test with tension tester, and pulling force >=34.5N isQualified.
A >=60mm of the present invention, B >=2*(60mm+ anode ear blob of viscose width+negative electrode lug blob of viscose width). Electrolyte isEnterprise's soft-package battery is produced and is used conventional electrolysis liquid. Aluminum plastic film, band glue lug sheet are that enterprise's soft-package battery is produced with judging accept.Sealed in unit is that enterprise's soft-package battery is produced normal operational outfit. Package temperature, time, pressure, seal width, thickness etc. are concretePackaging technology parameter is enterprise's soft-package battery production regulation technological parameter.
First aluminum plastic film material is cut out to (A ± 1) * (B ± 1) mm size, then the aluminum plastic film cutting is folded in half into(A ± 1) * (1/2B ± 1) mm size. Prepare to produce with detecting qualified band glue lug sheet, both positive and negative polarity band glue lug sheet short end simultaneouslyParcel high temperature gummed tape, is fixed on aluminum plastic film one side, seals with closedtop equipment, and closedtop prints and positive pole ear sheet blob of viscose connecting portionPosition is labeled as a1, closedtop prints with negative lug sheet blob of viscose connecting portion and is labeled as a2. Aluminum plastic film opposite side carries out heat with side seal machineEnvelope, heat-sealing prints part and is labeled as b. Under fluid injection room dry environment, will after the heat-sealing of both sides, in aluminium plastic bag, inject (1/10000) * A*B± 0.1g electrolyte, carries out the encapsulation of aluminium plastic bag oral area after unnecessary aluminium plastic bag gas is discharged, and heat-sealing prints part and is labeled as c. To sealUnder 60 ± 3 DEG C of environment of aluminum plastic film that install, tile and shelve after 24h, carry out heat near aluminum plastic film folded part with secondary sealing machineEnvelope, heat-sealing prints part and is labeled as d. After heat-sealing, carry out again tiling under 60 ± 3 DEG C of environment and shelve after 24h, oral area seal c is cut off,Bleed off electrolyte, cut test pieces 1,2,3 ... 11, test pieces wide cut 15 ± 1mm, carries out tensile test with tension tester, drawsPower >=34.5N is qualified.
A >=60mm of the present invention, B >=2*(60mm+ anode ear blob of viscose width+negative electrode lug blob of viscose width).
The amount that the present invention injects electrolyte is subject to the restriction of A*B value, and the amount of injecting electrolyte is (1/10000) * A*B ± 0.1g.
Electrolyte in the present invention is enterprise's soft-package battery production conventional electrolysis liquid.
Aluminum plastic film, band glue lug sheet in the present invention are that enterprise's soft-package battery is produced with judging accept.
Sealed in unit in the present invention is that enterprise's soft-package battery is produced normal operational outfit.
The concrete packaging technology parameter such as package temperature in the present invention, time, pressure, seal width, thickness is that enterprise is softBag battery production regulation technological parameter.
Advantage of the present invention and effect are:
1. the present invention simulates three subregions of encapsulation: closedtop district, He Erfeng district of side seal district, and 1 ~ 11 of test sampling, test is completeMask body, detects and has convincingness.
2. the present invention carries out the aluminum plastic film of encapsulation electrolyte after high temperature is shelved to seal near aluminum plastic film folded part, heat-sealingRear high temperature is shelved, and can truly characterize soft-package battery two envelope effects, after high temperature is shelved to the liquid heat-sealing of the folding rear enforcement of aluminum plastic filmTest truly characterizing battery soft-package battery package strength after discharging and recharging use.
3. the present invention tests cutting test pieces with tension tester, simple to operate, and test is directly perceived, can be directly,Show really the feasibility of soft-package battery packing materials, equipment, technique.
Brief description of the drawings
Fig. 1 is soft-package battery side packing schematic diagram in embodiment.
Wherein 1-test pieces, 1,2-test pieces, 2,3-test pieces, 3,4-test pieces, 4,5-test pieces, 5,6-test pieces6,7-test pieces, 7,8-test pieces, 8,9-test pieces, 9,10-test pieces, 10,11-test pieces 11, a1-closedtop prints with anodalLug sheet blob of viscose connecting portion, a2-closedtop prints and negative lug sheet blob of viscose connecting portion, and the heat-sealing of b-side seal prints part, c-aluminiumMould sack portion packed part, d-near the folding seal part of aluminum plastic film.
Detailed description of the invention
The present invention is by the following technical solutions: first aluminum plastic film material is cut out to (A ± 1) * (B ± 1) mm size, soAfter the aluminum plastic film cutting is folded in half into (A ± 1) * (1/2B ± 1) mm size. Prepare to produce with detecting the qualified band glue utmost point simultaneouslyAuricle, both positive and negative polarity band glue lug sheet short end parcel high temperature gummed tape, is fixed on aluminum plastic film one side, seals with closedtop equipment, pushes upSeal and positive pole ear sheet blob of viscose connecting portion are labeled as a1, closedtop prints with negative lug sheet blob of viscose connecting portion and is labeled as a2. AluminiumPlastic film opposite side seals with side seal machine, and heat-sealing prints part and is labeled as b. Aluminium after both sides being sealed under fluid injection room dry environmentMould in bag and inject (1/10000) * A*B ± 0.1g electrolyte, after unnecessary aluminium plastic bag gas is discharged, carry out the encapsulation of aluminium plastic bag oral area,Heat-sealing prints part and is labeled as c. By tiling and shelve after 24h under 60 ± 3 DEG C of environment of packaged aluminum plastic film, near aluminum plastic film folding partPoint seal with secondary sealing machine, heat-sealing prints and is partly labeled as d. After heat-sealing, carry out again tiling under 60 ± 3 DEG C of environment and shelve 24hAfter, oral area seal c is cut off, bleed off electrolyte, cut test pieces 1,2,3 ... 11, test pieces wide cut 15 ± 1mm, surveys with pulling forceExamination instrument carries out tensile test, and pulling force >=34.5N is qualified.
Embodiment
As shown in Figure 1, first Japanese DNPD-ND408 aluminum plastic film material is cut out to (120 ± 1) * (300 ± 1) mm chiVery little, then the aluminum plastic film cutting is folded in half into (120 ± 1) * (150 ± 1) mm size. Prepare band glue lug sheet, positive pole simultaneouslyLug specification is (Al) 0.2*20*9(3) * 38, negative lug specification is (Ni) 0.2*20*9(3) * 38, both positive and negative polarity band glue lugSheet short end parcel high temperature gummed tape, is fixed on aluminum plastic film one side, seals with closedtop equipment, and closedtop prints and positive pole ear sheet blob of viscoseConnecting portion is labeled as a1, closedtop prints with negative lug sheet blob of viscose connecting portion and is labeled as a2, 180 DEG C of heat-sealing temperatures, pressure0.3Mpa, time 6S, seal width 6.0 ± 0.5mm. Aluminum plastic film opposite side seals with side seal machine, and heat-sealing prints part markFor b, 180 DEG C of heat-sealing temperatures, pressure 0.3Mpa, time 3S, seal width 6.0 ± 0.5mm. Under fluid injection room dry environment by twoThe interior injection of the rear aluminium plastic bag of side heat-sealing 3.6 ± 0.1g TC-8022 model electrolyte of being bestowed by heaven for soft-package battery, by unnecessary aluminium plastic bag gasAfter discharge, carry out the encapsulation of aluminium plastic bag oral area, heat-sealing prints part and is labeled as c, 180 DEG C of heat-sealing temperatures, pressure 0.3Mpa, time 6S, envelopePrint width 6.0 ± 0.5mm. By tiling and shelve after 24h under 60 ± 3 DEG C of environment of packaged aluminum plastic film, near aluminum plastic film folding partPoint seal with secondary sealing machine, heat-sealing prints and is partly labeled as d, 180 DEG C of heat-sealing temperatures, pressure 0.3Mpa, time 8S, sealWidth 6.0 ± 0.5mm. After heat-sealing, carry out again tiling under 60 ± 3 DEG C of environment and shelve after 24h, oral area seal c is cut off, bleed off electricitySeparate liquid, cut test pieces 1,2,3 ... 11, test pieces wide cut 15 ± 1mm, carries out tensile test, test result with tension testerAs shown in table 1.
Table 1
Test pieces 1 2 3 4 5 6 7 8 9 10 11
Value of thrust (N) 36.5 36.2 36.4 36.1 36.4 36.0 36.1 36.1 36.5 36.5 36.5
Judge Qualified Qualified Qualified Qualified Qualified Qualified Qualified Qualified Qualified Qualified Qualified

Claims (2)

1. a method of verifying soft-package battery package reliability, is characterized in that: step is as follows:
(1), first aluminum plastic film material is cut out to (A ± 1) * (B ± 1) mm size, then the aluminum plastic film cutting is folded in half into(A ± 1) * (1/2B ± 1) mm size is prepared to produce with detecting qualified band glue lug sheet, both positive and negative polarity band glue lug sheet short end simultaneouslyParcel high temperature gummed tape, is fixed on aluminum plastic film one side, seals with closedtop equipment, and closedtop prints and positive pole ear sheet blob of viscose connecting portionPosition is labeled as a1, closedtop prints with negative lug sheet blob of viscose connecting portion and is labeled as a2, aluminum plastic film opposite side carries out heat with side seal machineEnvelope, heat-sealing prints part and is labeled as b;
(2), under fluid injection room dry environment, will in aluminium plastic bag after both sides heat-sealings, inject (1/10000) * A*B ± 0.1g electrolyte,After unnecessary aluminium plastic bag gas is discharged, carry out the encapsulation of aluminium plastic bag oral area, heat-sealing prints part and is labeled as c, by packaged aluminum plastic film 60Under ± 3 DEG C of environment, tiling is shelved after 24h, seals with secondary sealing machine near aluminum plastic film folded part, and heat-sealing prints part markBe designated as d;
(3), carry out again under 60 ± 3 DEG C of environment tiling after heat-sealing and shelve after 24h, oral area seal c is cut off, bleed off electrolyte, cutGet test pieces 1,2,3 ... 11, test pieces wide cut 15 ± 1mm, carries out tensile test with tension tester, and pulling force >=34.5N isQualified.
2. a kind of method of verifying soft-package battery package reliability according to claim 1, is characterized in that: A of the present invention >=60mm, B >=2*(60mm+ anode ear blob of viscose width+negative electrode lug blob of viscose width); Electrolyte is that enterprise's soft-package battery is produced useConventional electrolysis liquid, aluminum plastic film, band glue lug sheet are that enterprise's soft-package battery is produced with judging accept, sealed in unit is enterprise's Soft RollThe normal operational outfit of battery production, the concrete packaging technology parameter such as package temperature, time, pressure, seal width, thickness is enterpriseSoft-package battery is produced regulation technological parameter.
CN201610037226.8A 2016-01-20 2016-01-20 Method for verifying package reliability of soft-package battery Pending CN105591160A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106505253A (en) * 2016-12-16 2017-03-15 天津力神电池股份有限公司 The detection method of soft package lithium battery packaging effect
CN107966400A (en) * 2017-11-29 2018-04-27 天津力神电池股份有限公司 The detection method of aluminum plastic film packaging effect
CN108072565A (en) * 2017-02-22 2018-05-25 骆驼集团华中蓄电池有限公司 A kind of PE partition plates press line strength detection method
CN108123176A (en) * 2016-11-27 2018-06-05 深圳格林德能源有限公司 A kind of method for verifying polymer Li-ion battery package quality
CN109212132A (en) * 2018-08-22 2019-01-15 湖南立方新能源科技有限责任公司 A kind of soft-package battery encapsulation failure detection method
CN109444033A (en) * 2018-12-06 2019-03-08 上海紫江新材料科技股份有限公司 A kind of evaluation method of flexible packing lithium ion battery aluminum plastic film electrolyte resistance performance
CN109540662A (en) * 2018-10-16 2019-03-29 中航锂电(洛阳)有限公司 A kind of rectangular full tab battery core welding pull force test method

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CN101227014A (en) * 2007-01-19 2008-07-23 深圳市比克电池有限公司 Method for detecting lithium ion battery airtightness
CN102914409A (en) * 2012-08-14 2013-02-06 昆山兴能能源科技有限公司 Method for testing air tightness quality of flexibly packaged lithium ion battery
CN103050645A (en) * 2012-12-13 2013-04-17 深圳市迪比科电子科技有限公司 Method for packaging battery cell, plastic-aluminum membrane single sheet, and packaging body of battery cell and plastic-aluminum membrane monolithic

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CN1340444A (en) * 2000-08-31 2002-03-20 厦门宝龙工业股份有限公司 Soft package structure of battery core and its making method
EP1437585A2 (en) * 2003-01-13 2004-07-14 VARTA Microbattery GmbH Procedure for testing the leak tightness of galvanic elements
CN101227014A (en) * 2007-01-19 2008-07-23 深圳市比克电池有限公司 Method for detecting lithium ion battery airtightness
CN102914409A (en) * 2012-08-14 2013-02-06 昆山兴能能源科技有限公司 Method for testing air tightness quality of flexibly packaged lithium ion battery
CN103050645A (en) * 2012-12-13 2013-04-17 深圳市迪比科电子科技有限公司 Method for packaging battery cell, plastic-aluminum membrane single sheet, and packaging body of battery cell and plastic-aluminum membrane monolithic

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108123176A (en) * 2016-11-27 2018-06-05 深圳格林德能源有限公司 A kind of method for verifying polymer Li-ion battery package quality
CN106505253A (en) * 2016-12-16 2017-03-15 天津力神电池股份有限公司 The detection method of soft package lithium battery packaging effect
CN108072565A (en) * 2017-02-22 2018-05-25 骆驼集团华中蓄电池有限公司 A kind of PE partition plates press line strength detection method
CN107966400A (en) * 2017-11-29 2018-04-27 天津力神电池股份有限公司 The detection method of aluminum plastic film packaging effect
CN107966400B (en) * 2017-11-29 2020-05-19 天津力神电池股份有限公司 Method for detecting packaging effect of aluminum plastic film
CN109212132A (en) * 2018-08-22 2019-01-15 湖南立方新能源科技有限责任公司 A kind of soft-package battery encapsulation failure detection method
CN109540662A (en) * 2018-10-16 2019-03-29 中航锂电(洛阳)有限公司 A kind of rectangular full tab battery core welding pull force test method
CN109444033A (en) * 2018-12-06 2019-03-08 上海紫江新材料科技股份有限公司 A kind of evaluation method of flexible packing lithium ion battery aluminum plastic film electrolyte resistance performance
CN109444033B (en) * 2018-12-06 2021-04-13 上海紫江新材料科技股份有限公司 Method for evaluating electrolyte resistance of aluminum plastic film for flexible package lithium ion battery

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