CN105006597B - With the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production - Google Patents
With the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production Download PDFInfo
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- CN105006597B CN105006597B CN201510253241.1A CN201510253241A CN105006597B CN 105006597 B CN105006597 B CN 105006597B CN 201510253241 A CN201510253241 A CN 201510253241A CN 105006597 B CN105006597 B CN 105006597B
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- electrode
- lithium ion
- conformity
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- ion cell
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 238000011156 evaluation Methods 0.000 title claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 238000001453 impedance spectrum Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 238000010998 test method Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000005518 electrochemistry Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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
Abstract
The present invention discloses a kind of method of use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production, and the method uses electrochemical impedance spectroscopy method of testing, comprises the following steps：Selection is punched into disk with a batch of homopolarity electrode slice；Obtained two panels disk is taken, barrier film, the diameter with diameter greater than disk of barrier film are added between two panels；Load battery model, fixation pressure；Injection electrolyte, static 0.5~1.5h；One excitation of AC signal is applied to battery, impedance spectrum sweep test is carried out；Another batch of homopolarity electrode slice is taken, is repeated the above steps, compare the variation tendency of different batches electrode slice impedance spectrum.The method can not only effectively evaluate " microcosmic " characteristic of electrode, additionally it is possible to improve production efficiency, while improvement, optimized production process are also beneficial to, so as to improve the uniformity of cell.
Description
Technical field
The present invention relates to battery technology detection field, more particularly to given birth to symmetry electrode Fast Evaluation lithium ion cell electrode
The method for producing uniformity.
Background technology
At present, with energy density is high, long service life, the green power supply ----lithium ion battery applications that have a safety feature
Extensively.Lithium ion battery is widely used in the fields such as energy storage, power.Experiment finds, the same battery for making, and battery pack makes
The service life of cell is less than with the life-span, this explanation battery consistency significantly affects the service life of battery.In battery
Connection in series-parallel application in, the efficiency of battery with two side terminals problem influence battery and life-span, and safety problem also has an impact.Institute
So that the requirement for combining the uniformity of the cell of battery pack should be stricter.
Ensure battery with two side terminals, first have to ensure that every initial performance of battery is consistent, the self discharge of battery will
It is consistent, fading rate in use will be consistent.The screening of current battery uniformity mainly uses normal temperature, low
Battery capacity, internal resistance, voltage, discharge and recharge discharge platform and self discharge difference are screened under temperature and hot environment.
Conformity of production evaluation to electronic vehicle lithium-ion power battery at present is only confined in " macroscopic view " parameter
In quantitative assessment, however, these macroparameters tend not to effectively evaluate " microcosmic " characteristic of electrode.In lithium ion battery one
In the influence factor of cause property, the uniformity of electrode is the most key, also the most directly, therefore probes into out one kind effectively and rapidly
The stability no matter method of electrode uniformity understands battery enterprise between production batch in time is evaluated, or is produced to improving
Technique is respectively provided with very strong realistic meaning.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention to provide a kind of symmetry electrode Fast Evaluation lithium ion battery battery
The method of pole conformity of production, solves the problems, such as existing being only capable of from macroscopically evaluation lithium ion battery conformity of production.
The technical solution adopted by the present invention is：
With the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production, it is characterised in that using electrification
Impedance spectrum method of testing is learned, is comprised the following steps：
(1) selection is punched into disk with a batch of homopolarity electrode slice；
(2) two panels disk obtained in taking step (1), adds barrier film between two panels, barrier film it is straight with diameter greater than disk
Footpath；
(3) battery model, fixation pressure are loaded；
(4) electrolyte, static 0.5~1.5h are injected；
(5) excitation for AC signal is applied to battery, carries out impedance spectrum sweep test；
(6) another batch of homopolarity electrode slice is taken, repeat step (1)~step (5) compares different batches electrode slice impedance spectrum
Variation tendency.
Wherein it is preferred to, a diameter of 4~6cm of the disk, the diameter of the barrier film is 5~7cm.
Wherein it is preferred to, a diameter of 5cm of the disk, the diameter of the barrier film is 6cm.
Wherein it is preferred to, the injection rate of the electrolyte is 2.0 ± 0.2g.
Wherein it is preferred to, the frequency of the AC signal is 0.01Hz~10kHz.
Wherein it is preferred to, the pressure value in the step (3) is 0.1MPa.
In the present invention, symmetry electrode refers to the homopolarity electrode (negative or positive electrode) of different batches.
Beneficial effects of the present invention：
Method proposed by the present invention is primarily used to evaluate in lithium ion battery production the consistent of pole piece between different batches
Property, the method can not only effectively evaluate " microcosmic " characteristic of electrode, and evaluate quick, it is possible to increase production efficiency, while
Improvement, optimized production process are also beneficial to, so as to improve the uniformity of cell.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is 3 uniformity comparison diagrams of the positive pole of different batches in embodiment 1；
Fig. 2 is 2 uniformity comparison diagrams of the positive pole of different batches in embodiment 2；
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
Three anode pole pieces of different batches (A/B/C) are selected on lithium battery production line, model battery is prepared into.
Using the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production, surveyed using electrochemical impedance spectroscopy
Examination method, comprises the following steps：
(1) the anode electrode piece of A batches is selected, is punched into the disk of a diameter of 5cm；
(2) two panels disk obtained in taking step (1), adds barrier film, a diameter of 6cm of barrier film between two panels；
(3) battery model is loaded, fixation pressure, pressure is 0.1MPa；
(4) 2g electrolyte, static 1h are injected；
(5) excitation for AC signal is applied to battery, voltage drive is 5mV, frequency range：0.01Hz~10kHz,
Carry out impedance spectrum sweep test；
(6) the homopolarity electrode slice of B batches and C batches is taken, (1)~step (5) is respectively repeated steps, compares different batches electricity
The variation tendency of pole piece impedance spectrum.
Fig. 1 is the uniformity test result between three batches, from test result as can be seen that in diffusion phase, unanimously
Sex differernce than larger, the diffusion impedance of this electrode interior for indirectly illustrating than larger, the porosity of electrode difference.
Meanwhile, we also tested the anti-spectrum of A batches, B batches and C batch cathode pole pieces, and to the change of different batches
Trend is compared, and as a result shows, the variation tendency of the anti-spectrum of cathode pole piece is identical with the variation tendency of anode pole piece.
Embodiment 2
According to the test result of embodiment 1, the production technology to lithium battery is improved, including coating speed and baking oven temperature
The adjustment of gradient is spent, then selects to select the anode pole piece of A batches and B batches on lithium battery production line, be prepared into model electricity
Pond.
Using the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production, the method is hindered using electrochemistry
Anti- spectrum method of testing, comprises the following steps：
(1) the anode electrode piece of A batches is selected, is punched into the disk of a diameter of 4cm；
(2) two panels disk obtained in taking step (1), adds barrier film, a diameter of 5cm of barrier film between two panels；
(3) battery model is loaded, fixation pressure, pressure is 0.1MPa；
(4) 2g electrolyte, static 1h are injected；
(5) excitation for AC signal is applied to battery, voltage drive is 5mV, frequency range：0.01Hz~10kHz,
Carry out impedance spectrum sweep test；
(6) B batch anode electrode pieces are taken, (1)~step (5) is respectively repeated steps, compares different batches electrode slice impedance
The variation tendency of spectrum.
Fig. 2 is the uniformity test result of electrode after improving, it can be seen that uniformity is greatly improved.
Meanwhile, we also tested A batches and the anti-spectrum of B batch cathode pole pieces, and variation tendency to different batches is entered
Row compares, and as a result shows, the variation tendency of the anti-spectrum of cathode pole piece is identical with the variation tendency of anode pole piece.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. with the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production, it is characterised in that use electrochemistry
Impedance spectrum method of testing, comprises the following steps：
(1) selection is punched into disk with a batch of homopolarity electrode slice；
(2) two panels disk obtained in taking step (1), adds barrier film, the diameter with diameter greater than disk of barrier film between two panels；
(3) battery model, fixation pressure are loaded；
(4) electrolyte, static 0.5~1.5h are injected；
(5) excitation for AC signal is applied to battery, carries out impedance spectrum sweep test；
(6) another batch of homopolarity electrode slice is taken, repeat step (1)~step (5) compares the change of different batches electrode slice impedance spectrum
Change trend.
2. the method for use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production according to claim 1, its
It is characterised by：A diameter of 4~6cm of the disk, the diameter of the barrier film is 5~7cm.
3. the method for use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production according to claim 2, its
It is characterised by：A diameter of 5cm of the disk, the diameter of the barrier film is 6cm.
4. the method for use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production according to claim 1, its
It is characterised by：The injection rate of the electrolyte is 2.0 ± 0.2g.
5. the method for use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production according to claim 1, its
It is characterised by：The frequency of the AC signal is 0.01Hz~10kHz.
6. the method for use symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production according to claim 1, its
It is characterised by：Pressure value in the step (3) is 0.1MPa.
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| CN201510253241.1A CN105006597B (en) | 2015-05-18 | 2015-05-18 | With the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production |
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| CN105006597A CN105006597A (en) | 2015-10-28 |
| CN105006597B true CN105006597B (en) | 2017-06-27 |
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| CN201510253241.1A Expired - Fee Related CN105006597B (en) | 2015-05-18 | 2015-05-18 | With the method for symmetry electrode Fast Evaluation lithium ion cell electrode conformity of production |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508067A (en) * | 2018-02-11 | 2018-09-07 | 多氟多（焦作）新能源科技有限公司 | A method of evaluating the battery material of lithium ion battery using Symmetrical cells |
| CN108511815B (en) * | 2018-02-28 | 2021-04-09 | 合肥国轩高科动力能源有限公司 | Method and system for evaluating consistency of lithium ion battery |
| CN109346674B (en) * | 2018-09-19 | 2021-10-26 | 惠州亿纬锂能股份有限公司 | Baking method of battery pole piece |
| CN109856549B (en) * | 2019-01-18 | 2021-07-13 | 合肥国轩高科动力能源有限公司 | Evaluation method of electrode cycle attenuation mechanism of lithium ion battery |
| CN112687884A (en) * | 2020-12-14 | 2021-04-20 | 风帆有限责任公司 | Lithium battery for testing impedance of battery pole piece in situ and manufacturing method thereof |
| CN116008848B (en) * | 2023-02-03 | 2024-02-13 | 济南大学 | Application of color difference technology in detection of lithium ion battery electrode material and electrode plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423378A (en) * | 1981-12-04 | 1983-12-27 | Bear Automotive Service Equipment Company | Automotive battery test apparatus |
| CN101866758A (en) * | 2010-05-10 | 2010-10-20 | 河南大学 | Evaluation method of photoanode electron transmission performance of dye sensitization solar batteries |
| CN101907688A (en) * | 2010-08-02 | 2010-12-08 | 天津力神电池股份有限公司 | Method for detecting electrical property consistency of lithium ion battery |
| CN102088107A (en) * | 2010-12-24 | 2011-06-08 | 上海中兴派能能源科技有限公司 | Cell die and method for rapid evaluating cell matching degree |
| CN103840225A (en) * | 2014-03-27 | 2014-06-04 | 合肥国轩高科动力能源股份公司 | Screening method for lithium ion battery |
-
2015
- 2015-05-18 CN CN201510253241.1A patent/CN105006597B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423378A (en) * | 1981-12-04 | 1983-12-27 | Bear Automotive Service Equipment Company | Automotive battery test apparatus |
| CN101866758A (en) * | 2010-05-10 | 2010-10-20 | 河南大学 | Evaluation method of photoanode electron transmission performance of dye sensitization solar batteries |
| CN101907688A (en) * | 2010-08-02 | 2010-12-08 | 天津力神电池股份有限公司 | Method for detecting electrical property consistency of lithium ion battery |
| CN102088107A (en) * | 2010-12-24 | 2011-06-08 | 上海中兴派能能源科技有限公司 | Cell die and method for rapid evaluating cell matching degree |
| CN103840225A (en) * | 2014-03-27 | 2014-06-04 | 合肥国轩高科动力能源股份公司 | Screening method for lithium ion battery |
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