CN101242007A - Lithium ion battery making method - Google Patents
Lithium ion battery making method Download PDFInfo
- Publication number
- CN101242007A CN101242007A CNA2007100048960A CN200710004896A CN101242007A CN 101242007 A CN101242007 A CN 101242007A CN A2007100048960 A CNA2007100048960 A CN A2007100048960A CN 200710004896 A CN200710004896 A CN 200710004896A CN 101242007 A CN101242007 A CN 101242007A
- Authority
- CN
- China
- Prior art keywords
- battery
- slurry
- deironing
- lithium ion
- magnet
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 239000011268 mixed slurry Substances 0.000 claims abstract description 6
- 238000000053 physical method Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000006258 conductive agent Substances 0.000 claims abstract description 3
- 239000007767 bonding agent Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention discloses a method for manufacturing a lithium ion battery and the method comprises the following steps: A. mixing the battery powder body and conductive agent and adhesive to uniform; B. deironing the slurry obtained in the step A; C. uniformly coating the slurry after deironing to the two sides of the collector, and baking for volatilizing the dissolvent; D. according to the magnitude designed by each battery type process, chopping the pole piece obtained in the step C to appropriate magnitude; E. coiling the positive and negative pole piece and diaphragm to winding core and assembling to an electric core together with the battery casing; F. injecting liquid into the electric core to change to a finished battery. The step B eliminates the iron with a physical method, the mixed slurry flows through the fluid groove arranged with a magnet, and the ion impurity in the slurry is eliminated by the magnetic force of the magnet in the fluid groove. With the method the iron impurity content in the slurry is effectively reduced thereby reducing the hazard that the iron impurity generated in the batch mixing process leads to the explosion of the battery.
Description
Technical field
The present invention relates to lithium ion battery and make the field.
Background technology
Lithium ion battery is a kind of brand-new Green Chemistry power supply, compares with traditional nickel-cadmium cell, Ni-MH battery to have the voltage height, and the life-span is long, the advantage that energy density is big.After nineteen ninety, Sony corporation of Japan was released first generation lithium ion battery, it had been developed and has been widely used in rapidly various portable sets.
At present, most of lithium merchant's of power plant production technology comprises steps such as batch mixing, coating, film-making, assembling, fluid injection.But before coating, can in the spraying slurry, sneak into iron powder impurity, particularly compounding process before the coating, because the high speed rotating of mixer, in stirring, bring a certain amount of iron powder impurity into, and iron powder makes easily in the use of battery battery produce blast as a kind of metallic particles.
Summary of the invention
At above technical problem, the invention provides a kind of lithium ion battery manufacture method, use this method, can reduce the iron tramp content in the slurry, thereby effectively reduce the possibility of battery explosion.
For realizing above-mentioned technical purpose, the present invention by the following technical solutions:
A kind of lithium ion battery manufacture method may further comprise the steps:
A, battery powder materials and conductive agent and bonding agent are mixed;
B, the slurry that steps A is obtained carry out deironing;
C, the two sides that evenly is coated in collector through the slurry of deironing, and baking volatilizes solvent;
D, according to the size of each battery size technological design, the pole piece that the C step is obtained cuts into suitable size;
E, with positive and negative plate and barrier film coiling core and and battery container be assembled into electric core;
F, with electric core fluid injection, change into and be the finished product battery.
Above-mentioned deironing step B adopts the physical method deironing.
Described physical method deironing is meant mixed slurry flowed through and is provided with the fluid slot of magnet, by the magnetic force of magnet in the fluid slot iron tramp in the slurry removed.
Adopt the useful technique effect that technique scheme produced to be: by adopting the mode of physics deironing, with mixed slurry by being provided with the fluid slot of magnet, magnetic force by magnet in the fluid slot is removed the iron tramp in the slurry, effectively reduced the iron tramp content in the slurry, thereby effectively reduced because the iron tramp that produces in the batch mixing process makes the danger of battery explosion.
Embodiment
Embodiment 1
Present embodiment is that example is to specify realization of the present invention with 053048S.
(1) manufacturing of positive plate
According to the anode sizing agent of usual technology preparation cobalt acid lithium system, mixed slurry is flowed through be provided with the fluid slot of magnet then, by the magnetic force of magnet in the fluid slot iron tramp in the slurry is removed.Be coated with 4 meters long coating machines.The temperature of three dry drying tunnels is set to 90,95 and 100 ℃ respectively before, during and after the coating machine.Used collector aluminum foil thickness is 20 μ m, and wide 280mm, single face aluminium foil coating thickness are 130 μ m, and the double spread THICKNESS CONTROL is at 250 μ m.
(2) manufacturing of negative plate
The negative plate manufacturing is undertaken by liquid electrolyte lithium ion battery negative plate production technology.Negative material is selected Changsha Xing Cheng graphite for use, bonding agent use bonding agent CMC (sodium carboxymethylcellulose) and SBR latex.During slurrying, CMC with 2 parts of weight is dissolved in 100 parts of water earlier, then, under agitation add 5 parts of weight SBR latex, finish, add 92 parts of graphite powders again, and high degree of agitation is 4 hours continuously, can get cathode size, then with above-mentioned 4 meters long small-sized coating machines with the cathode size double spread on the thick Copper Foil of 12 μ m, promptly obtain negative plate after doing.
(3) manufacturing of square " 053048S " battery
Above-mentioned positive and negative plate and diaphragm paper (Celgard 2300) are cut according to model " 053048S " size that battery requires, then, again according to the usual technology of battery manufacturing, spot welding lug, baking sheet, coiling, dress shell, Laser Welding cover plate, drying and fluid injection successively, gained battery referable preliminary filling and changing into.
(4) the battery preliminary filling with change into
The semi-finished product battery that drying is good injects the organic electrolyte of 2.4g, place after 2 hours, test with certain system of discharging and recharging, the system of discharging and recharging is: the 1st step was with 0.05CmA electric current constant current charge 60 minutes, the 2nd step was with 0.1CmA electric current constant current charge 50 minutes, the 3rd step then with 0.5CmA electric current constant current charge till the 4.2V, the 4th step was then used constant voltage 4.2V instead, and to charge to electric current be 30mA, after leaving standstill 5 minutes, the 5th the step again with 0.5CmA electric current constant-current discharge to cut-ff voltage 3.0V, after leaving standstill 5 minutes, the 6th step was with 1CmA electric current constant-current constant-voltage charging, and the 7th step then used the 1CmA current discharge to cut-ff voltage 2.75V, electricity is so just finished preliminary filling and is changed into step, at last, with battery seal, get final product to such an extent that model is " 053048S " finished steel housing battery.
(5) security test
The battery of finishing preliminary filling and change into is carried out loop test by following system, its system is: the 1st step, be 4.2V with 1CmA electric current constant current charge to voltage earlier, the 2nd step was 30mA with 4.2V voltage constant voltage charge to electric current, left standstill 5 minutes, the 3rd step,, circulate 500 times to cut-ff voltage 2.75V with 1CmA electric current constant-current discharge, to detect the fail safe of battery with such system.
Comparative Examples 1
Be example to make 053048S equally, the manufacture method of this Comparative Examples manufacture method and embodiment 1 is basic identical, unique different be that this Comparative Examples is not flowed through the slurry that mixes in the manufacture process of positive plate and is not provided with the fluid slot of magnet, by the step that the magnetic force of magnet in the fluid slot is removed the iron tramp in the slurry, other steps are the same.
Security test
The battery of finishing preliminary filling and change into is carried out loop test by following system, its system is: the 1st step, be 4.2V with 1CmA electric current constant current charge to voltage earlier, the 2nd step was 30mA with 4.2V voltage constant voltage charge to electric current, left standstill 5 minutes, the 3rd step,, circulate 500 times to cut-ff voltage 2.75V with 1CmA electric current constant-current discharge, to detect the fail safe of battery with such system.
The test result contrast
| Test quantity (only) | Blast or quantity on fire (only) | Ratio (‰) | |
| Embodiment 1 | 200000 | 1 | 0.005 |
| Comparative Examples 1 | 200000 | 4 | 0.02 |
Test comparison result shows, by adopting the mode of physics deironing, with mixed slurry by being provided with the fluid slot of magnet, magnetic force by magnet in the fluid slot is removed the iron tramp in the slurry, effectively reduced the iron tramp content in the slurry, thereby effectively reduced because the iron tramp that produces in the batch mixing process makes the danger of battery explosion.
Claims (3)
1. lithium ion battery manufacture method may further comprise the steps:
A, battery powder materials and conductive agent and bonding agent are mixed;
B, the slurry that steps A is obtained carry out deironing;
C, the two sides that evenly is coated in collector through the slurry of deironing, and baking volatilizes solvent;
D, according to the size of each battery size technological design, the pole piece that the C step is obtained cuts into suitable size;
E, with positive and negative plate and barrier film coiling core and and battery container be assembled into electric core;
F, with electric core fluid injection, change into and be the finished product battery.
2. lithium ion battery manufacture method according to claim 1 is characterized in that: described deironing step adopts the physical method deironing.
3. lithium ion battery manufacture method according to claim 2 is characterized in that: described physical method deironing is meant mixed slurry flowed through and is provided with the fluid slot of magnet, by the magnetic force of magnet in the fluid slot iron tramp in the slurry removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100048960A CN101242007A (en) | 2007-02-06 | 2007-02-06 | Lithium ion battery making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100048960A CN101242007A (en) | 2007-02-06 | 2007-02-06 | Lithium ion battery making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101242007A true CN101242007A (en) | 2008-08-13 |
Family
ID=39933326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100048960A Pending CN101242007A (en) | 2007-02-06 | 2007-02-06 | Lithium ion battery making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101242007A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185157A (en) * | 2011-03-22 | 2011-09-14 | 宁波海锂子新能源有限公司 | Production process of waterborne positive lithium ion battery |
| CN102239595A (en) * | 2008-12-08 | 2011-11-09 | 株式会社日立制作所 | Process for producing lithium secondary battery |
| CN102641118A (en) * | 2011-02-16 | 2012-08-22 | 精工爱普生株式会社 | Production method of gas cell, and gas cell |
| CN105021024A (en) * | 2015-07-28 | 2015-11-04 | 深圳市贝特瑞新能源材料股份有限公司 | Microporous container used for deeply drying lithium ion battery powder materials and deep drying method |
-
2007
- 2007-02-06 CN CNA2007100048960A patent/CN101242007A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239595A (en) * | 2008-12-08 | 2011-11-09 | 株式会社日立制作所 | Process for producing lithium secondary battery |
| CN102239595B (en) * | 2008-12-08 | 2014-11-05 | 株式会社日立制作所 | Process for producing lithium secondary battery |
| CN102641118A (en) * | 2011-02-16 | 2012-08-22 | 精工爱普生株式会社 | Production method of gas cell, and gas cell |
| CN102641118B (en) * | 2011-02-16 | 2014-12-31 | 精工爱普生株式会社 | Production method of gas cell, and gas cell |
| CN102185157A (en) * | 2011-03-22 | 2011-09-14 | 宁波海锂子新能源有限公司 | Production process of waterborne positive lithium ion battery |
| CN102185157B (en) * | 2011-03-22 | 2013-06-12 | 浙江海锂子新能源有限公司 | Production process of waterborne positive lithium ion battery |
| CN105021024A (en) * | 2015-07-28 | 2015-11-04 | 深圳市贝特瑞新能源材料股份有限公司 | Microporous container used for deeply drying lithium ion battery powder materials and deep drying method |
| CN105021024B (en) * | 2015-07-28 | 2019-06-18 | 深圳市贝特瑞新能源材料股份有限公司 | A kind of method of depth drying lithium ion battery powder material |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080813 |