CN106711511A - Method for manufacturing laminated type soft battery cell for in-situ XRD (X-Ray Diffraction) testing - Google Patents
Method for manufacturing laminated type soft battery cell for in-situ XRD (X-Ray Diffraction) testing Download PDFInfo
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- CN106711511A CN106711511A CN201710048961.3A CN201710048961A CN106711511A CN 106711511 A CN106711511 A CN 106711511A CN 201710048961 A CN201710048961 A CN 201710048961A CN 106711511 A CN106711511 A CN 106711511A
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- battery cell
- soft pack
- pack cell
- tic particles
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 238000002441 X-ray diffraction Methods 0.000 title abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011889 copper foil Substances 0.000 claims abstract description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 20
- 239000007767 bonding agent Substances 0.000 claims description 16
- 238000004080 punching Methods 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 11
- 239000005030 aluminium foil Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000002985 plastic film Substances 0.000 claims description 8
- 229920006255 plastic film Polymers 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000011149 active material Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 3
- 239000011888 foil Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 2
- 238000004806 packaging method and process Methods 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000009991 scouring Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910000398 iron phosphate Inorganic materials 0.000 description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- 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
- 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
- H01M50/183—Sealing members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a method for manufacturing a laminated type soft battery cell, and in particular to a method for manufacturing a laminated type soft battery cell for in-situ XRD (X-Ray Diffraction) testing. The method comprises the following steps: preparing slurry of which the adhesive mass percentage is not less than 5% and the anode solid content is 40-60%; coating a pored aluminum foil, a pore-free copper foil or a lithium strip with a pole piece; manufacturing a positive plate and a negative plate of certain sizes, overlapping the positive plate, the negative plate and an isolating membrane in sequence, packaging with an aluminum plastic membrane without scouring pit so as to obtain a battery cell, opening the battery cell, and performing fixation sealing on the edge of the opening by using a leadless sealing plate; and baking the battery cell for 12+/-0.5 hours in an environment of 85+/-5 DEG C, and performing liquid injection, leaving to stand in vacuum, packaging and formation. The soft battery cell manufactured by using the method can be directly inserted into an XRD sample platform for in-situ testing, no extra sealing chamber is needed, and the method has the characteristics of simple manufacturing mode operation.
Description
Technical field
The present invention relates to the preparation method of stacked soft pack cell, more particularly to a kind of lamination for in-situ TiC particles test
The preparation method of formula soft pack cell.
Background technology
In recent years lithium battery industry development is swift and violent, and particularly electric tool, electric automobile are developed rapidly, entire society pair
The demand of lithium ion battery is increasing, the also more and more higher of the requirement to each enterprise.XRD technologies are used as a kind of ripe efficient point
Analysis detection means, plays an important role in terms of Study on Li-ion batteries.In the charge and discharge process of battery, the knot of electrode material
Crystal class type, crystal parameter etc. can change, in order to determine the specific change of the electrode material generation in battery charge and discharge process,
We can be in real time observed electrode material using in-situ TiC particles.Such that it is able to deduce in electrochemical reaction process
The intermediate of generation, by these intermediate products just can deduce reaction mechanism.
In the prior art, it is more using button electrical method, it is necessary to by the anode plate perforate of metal material and to seal, pole piece to be measured
Special, such as perforate, thinning is generally required, and battery generally requires the specific XRD test cabinets of matching or seal box, makes phase
To complexity, while the influence of XRD diffraction backgrounds is larger；Such as Huanggang Normal University's (application number：20150906239.X) the original position of invention
XRD battery testing seal boxes, special battery used is by groups such as positive cover, anode pole piece, barrier film, cathode pole piece and negative covers
Into, and the circular hole of 12mm diameters is provided with positive cover, X-ray enters into the reaction surface of positive plate by circular hole, must there is ten
Divide strong background peaks interference.Guangxi Normal University's (application number：201410624775.6) a kind of test electrochemical reaction of invention
The in-situ TiC particles reative cell of process, battery must be connected with reative cell and use, and its complicated integral structure is not easy to operate.
Therefore, it is necessary to it is right to prepare to provide a kind of preparation method of the stacked soft pack cell for in-situ TiC particles test
The battery core answered overcomes drawbacks described above.
The content of the invention
The invention provides a kind of preparation method of the stacked soft pack cell for in-situ TiC particles test, by the present invention
The soft pack cell made can be inserted directly into carries out in-situ test on XRD sample stages, without closed chamber is made in addition, also with system
The characteristics of standby mode is simple to operate
In order to solve the above-mentioned technical problem, the technical solution used in the present invention is：
A kind of preparation method of stacked soft pack cell for in-situ TiC particles test, comprises the following steps：
Prepare the slurry that bonding agent mass fraction is not less than 5%, positive pole solid content is 40%~60%；
Pole piece is coated with punching aluminium foil, non-porous Copper Foil or lithium band；
The positive plate and negative plate of certain size are prepared, the positive plate and the negative plate are folded in order with barrier film
It is good, battery core is packaged into using the aluminum plastic film without punching hole, then in the battery core upper shed and with unleaded seal stock fixing seal institute
State edge of opening；
12 ± 0.5h, fluid injection are toasted in the environment of the battery core is placed on into 85 ± 5 DEG C, vacuum stands, encapsulates and is melted into.
Preferably, the step " toasts 12 ± 0.5h, fluid injection, vacuum in the environment of the battery core is placed on into 85 ± 5 DEG C
Also comprise the following steps after standing, encapsulation and chemical conversion "：
Degasification, partial volume and test.
Preferably, " it is 40%~60% to prepare bonding agent mass fraction and be not less than in 5%, positive pole solid content to the step
Slurry " in, in terms of mass fraction, active material accounts for 60%~93% to anode sizing agent, and conductive carbon SP accounts for 2%~20%, bonding
Agent PVDF accounts for 5%~20%, and NMP stirring of the solid content control 40~60% is added after powder is well mixed.
Preferably, the mixing time of the stirring is 1~2 hour.
Preferably, the step " toasts 12 ± 0.5h, fluid injection, vacuum in the environment of the battery core is placed on into 85 ± 5 DEG C
The time of repose of standing, encapsulation and chemical conversion " is 12~14h.
Preferably, the bonding agent is PVDF or PTFE.
Preferably, the unleaded seal stock includes PVC, PET, PMMA and PC, the thickness model of the unleaded seal stock
It is 0.05mm-2mm to enclose.
Preferably, the length and width of the positive plate is less than the negative plate length and width, is less than value range
1mm-4mm。
Preferably, the width of the positive plate, less than the width of the barrier film, is 2mm-8mm less than value range.This hair
A kind of preparation method of bright stacked soft pack cell for in-situ TiC particles test, the pole piece material of battery core is respectively coated
On the punching aluminium foil or the non-porous Copper Foil, and the mass fraction of bonding agent is set it is not less than 5% so that slurry can be stablized
Be bonded on foil, and then be easy to X-ray can be directed through foil enter into active material test so that production
Battery core when XRD is tested in the original location the characteristics of have background influence small.In addition, pole piece of the invention and the barrier film are stacking
Mode assembles, without circle around, it is composable to help battery, or half-cell, the characteristics of with making simple.Further,
It is packaged using without the punching hole aluminum plastic film, and the opening is sealed with unleaded seal stock, it is simple and easy to apply with opening,
So that the battery core of present invention production has：X-ray can reach positive and negative pole material reaction surface and carry out by the unleaded seal stock
The function of diffraction.Further, vacuumized after battery core fluid injection, it is ensured that the close contact between both positive and negative polarity pole piece, beneficial to process
Discharge and recharge, also causes that the both positive and negative polarity lug of battery core is connected to external circuit, can directly carry out discharge and recharge research.Made by the present invention
The soft pack cell for performing can be inserted directly into carries out in-situ test on XRD sample stages, without closed chamber is made in addition, also with preparation
The characteristics of mode is simple to operate.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the preparation method of stacked soft pack cell for in-situ TiC particles test of the present invention.
Fig. 2 is present invention punching aluminium foil test LiFePO4 XRD spectra.
Specific embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are specifically illustrated, accompanying drawing is only for reference and explanation is used, and it is right not constitute
The limitation of scope of patent protection of the present invention.
Embodiment 1：
Refer to Fig. 1 and Fig. 2, a kind of preparation method of stacked soft pack cell for in-situ TiC particles test of the present invention, bag
Include following steps：
01, prepare the slurry that bonding agent mass fraction is not less than 5%, positive pole solid content is 40%~60%.Specifically, plus
Entering add appropriate NMP to stir after active material, conductive carbon SP, bonding agent, powder are well mixed, wherein, the active material can
It is iron phosphate powder.More specifically, in terms of mass fraction, the iron phosphate powder accounts for 80%, and conductive carbon SP accounts for 10%, glue
Connect agent and account for 10%, appropriate NMP is added after powder is well mixed, 2h is stirred with thin glass bar, the solid content control of the NMP exists
50%, viscosity is 8000mPa.s.It should be noted that the mixing time may be configured as 1~2 hour, the bonding agent is
PVDF or PTFE.
02, it is coated with pole piece on punching aluminium foil, non-porous Copper Foil or lithium band.Specifically, the pole piece of the battery core is prepared, paper tinsel is used
Material thickness is the punching aluminium foil of 25um, and aperture is 25um, before painting work is implemented, first the punching aluminium foil surface is carried out clearly
Wash, i.e., being stained with alcohol one direction with cotton wipes, and foil bottom surface is close to the glass plate on desk, and clean surface is smooth wrinkle-free,
Again the fresh anode sizing agent being stirred down to aluminium foil top, adjustment coating blade highly, pulls slurry to be coated with out uniform
Pole piece, lug position cotton swab is stained with alcohol and wipes, take advantage of slurry it is not dry it is small pole piece is fixed on box, pole piece bottom surface does not contact
Thing is appointed, feeding oven cooking cycle is standby, the pole piece of drying can continue to be coated with bottom surface, can not also apply, you can applied using one side
Cloth, also can double spread.It should be noted that negative plate is similarly coated with, punching Copper Foil can be used, it is also possible to conventional Copper Foil, may be used also
It is coated with using lithium piece.
03, the positive plate and negative plate of certain size are prepared, by the positive plate and the negative plate with barrier film by suitable
Sequence is folded, and is packaged into battery core using the aluminum plastic film without punching hole, then fix close in the battery core upper shed and with unleaded seal stock
Seal the edge of opening.Specifically, roll squeezer parameter is adjusted, material compacted density is controlled, and pole piece is cut into manually required chi
It is very little, small 3mm, the wide small 6mm of the width barrier film of the positive plate of the positive pole length of a film and the negative plate wide,
Positive/negative plate switching nickel sheet, then by positive/negative plate and barrier film by smoothly folding, with the soft envelope of aluminum plastic film, because battery core is very thin, aluminium
Plastic film is cheated without punching, and opening, the aperture area about 1cm*1cm, the opening are set on the packaged battery core front of aluminum plastic film
It is good with epoxy sealing, sealed with the unleaded seal stock that thickness is 0.18mm again at opening, the unleaded seal stock bag
PVC, PET, PMMA and PC are included, further, the thickness range of the unleaded seal stock can be 0.05mm-2mm.Need explanation
, the unleaded seal stock includes PVC, PET, PMMA and PC, the settable scope of the thickness of the unleaded seal stock
It is 0.05mm-2mm, the length and width of the positive plate is respectively less than the negative plate length and width, less than the value range of value
1mm-4mm is may be configured as, the width of the width less than the barrier film of the positive plate may be configured as 2mm- less than value range
8mm。
04,12 ± 0.5h, fluid injection are toasted in the environment of the battery core is placed on into 85 ± 5 DEG C, vacuum stands, encapsulates and changes
Into.Specifically, 12 ± 0.5h, the hand in glove box are toasted in the environment of the battery core that step 03 is prepared being placed on into 85 ± 5 DEG C
Dynamic fluid injection, vacuum stands 12~14h post packages, then clamps chemical conversion with clamping plate.
05, degasification, partial volume and test.Specifically, the unnecessary electrolyte of the battery core of step 04 production is extracted, it is right
Its trimming and Insulation test, partial volume, the battery core for obtaining can be used for in-situ TiC particles test.During test, surveyed using the high accuracy of 5V5mA
Examination cabinet, battery core can be directly sandwiched on XRD sample stages, and positive and negative lug is connected with the clip of test cabinet, and wiring is from X-ray diffractometer
Tapping below is drawn, and is connected with the test cabinet of outside, is capable of achieving the in-situ test of the XRD scannings in discharge and recharge, whole mistake
Cheng Kuaijie is simple, workable.
It should be noted that in terms of mass fraction, in the step 01, in anode sizing agent, active material accounts for 60%~
93%, conductive carbon SP account for 2%~20%, and bonding agent accounts for 5%~20%, and the solid content control of the NMP is added 40~60%
The mixing time of the NMP is 1-2 hours.In addition, as shown in Figure 2：Diffraction maximum is high with standard diagram matching degree, therefore, this hair
The battery core that open-birth is produced is completely suitable for the testing research of in-situ TiC particles.
Embodiment 2：
Embodiment 2 is differed only in embodiment 1：The iron phosphate powder of the step 01 accounts for 85%, conduction
Carbon SP accounts for 10%, and bonding agent PTFE accounts for 5%, and other techniques refer to the description of embodiment 1, and here is omitted.
Embodiment 3：
Embodiment 3 is differed only in embodiment 1：The described iron phosphate powder of the step 01 accounts for 70%, leads
Electrical carbon SP accounts for 10%, and bonding agent PVDF accounts for 20%, and other techniques refer to the description of embodiment 1 with embodiment 1, no longer goes to live in the household of one's in-laws on getting married herein
State.
Embodiment 4：
Embodiment 4 is differed only in embodiment 1：The positive pole aluminium foil thickness of the step 02 is 25um, and aperture is
35um, negative pole is coated with using non-porous Copper Foil, and other techniques refer to the description of embodiment 1, and here is omitted.
Embodiment 5：
The present embodiment is differed only in embodiment 1, and the described unleaded seal stock of the step 03 is PMMA, thickness
It is 0.15um, other techniques refer to the description of embodiment 1, and here is omitted.
From the above, it can be seen that a kind of making of stacked soft pack cell for in-situ TiC particles test of the invention
Method, the pole piece material of battery core is respectively coated on the punching aluminium foil or the non-porous Copper Foil, and set bonding agent
Mass fraction is not less than 5% so that slurry stably can be bonded on foil, and then is easy to X-ray to be directed through foil to enter
Enter to active material test, so that the characteristics of battery core of production has background influence small when XRD is tested in the original location.Separately
Outward, pole piece of the invention and the barrier film are assembled in the way of stacking, need not enclosed around composable to help battery, or half
Battery, with make it is simple the characteristics of.Further, use is packaged without the punching hole aluminum plastic film, and with without lead-tight
Sheet material seals the opening, simple and easy to apply with opening so that the battery core of present invention production has：X-ray can be by the nothing
Lead-tight sheet material reaches positive and negative pole material reaction surface and carries out the function of diffraction.Further, vacuumized after battery core fluid injection, it is ensured that
Close contact between both positive and negative polarity pole piece, beneficial to process discharge and recharge, also causes that the both positive and negative polarity lug of battery core is connected to external circuit, can
Directly to carry out discharge and recharge research.The soft pack cell made by the present invention can be inserted directly into and original position is carried out on XRD sample stages
Test, without in addition make closed chamber, also with preparation method it is simple to operate the characteristics of.
Above disclosed is only presently preferred embodiments of the present invention, it is impossible to rights protection model of the invention is limited with this
Enclose, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (9)
1. it is a kind of for in-situ TiC particles test stacked soft pack cell preparation method, it is characterised in that comprise the following steps：
Prepare the slurry that bonding agent mass fraction is not less than 5%, positive pole solid content is 40%~60%；
Pole piece is coated with punching aluminium foil, non-porous Copper Foil or lithium band；
The positive plate and negative plate of certain size are prepared, the positive plate and the negative plate are folded in order with barrier film,
Battery core is packaged into using the aluminum plastic film without punching hole, then in the battery core upper shed and with described in unleaded seal stock fixing seal
Edge of opening；
12 ± 0.5h, fluid injection are toasted in the environment of the battery core is placed on into 85 ± 5 DEG C, vacuum stands, encapsulates and is melted into.
2. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The step " toasts 12 ± 0.5h, fluid injection, vacuum stands, encapsulates and changes in the environment of the battery core is placed on into 85 ± 5 DEG C
Into " after also comprise the following steps：
Degasification, partial volume and test.
3. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
In the step " preparing bonding agent mass fraction to be not less than in the 5%, slurry that positive pole solid content is 40%~60% ", positive pole slurry
In terms of mass fraction, active material accounts for 60%~93% to material, and conductive carbon SP accounts for 2%~20%, and bonding agent PVDF accounts for 5%~
20%, NMP stirring of the solid content control 40~60% is added after powder is well mixed.
4. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 3, it is characterised in that
The mixing time of the stirring is 1~2 hour.
5. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The step " toasts 12 ± 0.5h, fluid injection, vacuum stands, encapsulates and changes in the environment of the battery core is placed on into 85 ± 5 DEG C
Into " time of repose be 12~14h.
6. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The bonding agent is PVDF or PTFE.
7. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The unleaded seal stock includes PVC, PET, PMMA and PC, and the thickness range of the unleaded seal stock is 0.05mm-2mm.
8. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The length and width of the positive plate is less than the negative plate length and width, and 1mm-4mm is less than value range.
9. the preparation method of the stacked soft pack cell of in-situ TiC particles test is used for as claimed in claim 1, it is characterised in that
The width of the positive plate, less than the width of the barrier film, is 2mm-8mm less than value range.
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| CN103247818A (en) * | 2012-02-10 | 2013-08-14 | 苏州能斯特新能源有限公司 | Flexible-packaging laminated lithium iron phosphate cell with high specific energy and manufacturing method thereof |
| CN103904386A (en) * | 2014-02-26 | 2014-07-02 | 深圳大学 | Soft package lithium air battery and preparation method thereof |
| CN105390762A (en) * | 2015-11-04 | 2016-03-09 | 中国科学院上海微系统与信息技术研究所 | In-situ test apparatus for lithium ion battery, assembly bracket and assembly method for apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247818A (en) * | 2012-02-10 | 2013-08-14 | 苏州能斯特新能源有限公司 | Flexible-packaging laminated lithium iron phosphate cell with high specific energy and manufacturing method thereof |
| CN103904386A (en) * | 2014-02-26 | 2014-07-02 | 深圳大学 | Soft package lithium air battery and preparation method thereof |
| CN105390762A (en) * | 2015-11-04 | 2016-03-09 | 中国科学院上海微系统与信息技术研究所 | In-situ test apparatus for lithium ion battery, assembly bracket and assembly method for apparatus |
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