CN102299381A - Winding method of lithium ion battery - Google Patents
Winding method of lithium ion battery Download PDFInfo
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- CN102299381A CN102299381A CN2010102113580A CN201010211358A CN102299381A CN 102299381 A CN102299381 A CN 102299381A CN 2010102113580 A CN2010102113580 A CN 2010102113580A CN 201010211358 A CN201010211358 A CN 201010211358A CN 102299381 A CN102299381 A CN 102299381A
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- winding
- diaphragm
- lithium ion
- ion battery
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention belongs to the technical field of manufacturing of lithium ion batteries, and provides a winding method of a lithium ion battery. The winding method of the lithium ion battery comprises the following steps: dragging a whole roll of diaphragm at the speed of 3-15m/s to continuously pass through a baking chamber with the length of 10-100m at the baking temperature of 45-120 DEG C; and enabling the diaphragm subjected to prebaking treatment to coordinate with an electrode plate again, and carrying out continuous winding to generate a battery cell through a semi-automatic winding machine and a full-automatic winding machine. According to the winding method of the lithium ion battery, after the diaphragm which is subjected to prebaking treatment is used for winding, when a winding cell is baked before liquid infusion, the contraction phenomenon of the diaphragm is relieved greatly, which can effectively improve the problems of ultra thickness and high reject ratio caused by the folding of the winding cell; the thickness of the battery can be improved; whole roll of continuous baking is adopted for the diaphragm, the intermediate diaphragm is not required to be cut off, after the diaphragm is prebaked, the diaphragm can be used in continuous winding production performed by a semi-automatic winding machine and a full-automatic winding machine; and the cost is lower, the method is more convenient to operate, and the efficiency is higher.
Description
Technical field
The present invention relates to the lithium ion battery assembly method, relate in particular to the coiled lithium ion battery method for winding.
Background technology
Coiled lithium ion battery is when making the thicker size battery of thickness, because the heat baking of barrier film before fluid injection shrink, factor such as the expansion of positive and negative plate after fluid injection, charging and cause rolling up the core fold finally causes the thickness of entire cell to exceed standard.Present domestic lithium electricity coiling technology is just fast toward semi-automatic coiling, full automatic winding development, progressively replace traditional manual coiling, the winding quality of semi-automatic coiling, full automatic winding, consistency and efficient are than higher, but also because traditional manual of its winding rotary speed, winding tension geometric ratio reeled much bigger, for this reason, the thicker type battery occurs causing the super thickness rate example of battery also to increase greatly because of volume core fold, even indivedual models can appear in process of production, the super thick fraction defective up to 5～50% can appear.
Summary of the invention
The present invention seeks to overcome the deficiencies in the prior art, provide a kind of and can effectively improve coiled battery because the method for winding of the lithium ion battery of volume core fold and the high problem of super thick fraction defective that causes.
Another object of the present invention provides a kind of lithium ion battery method for winding that can effectively reduce cell thickness.
For achieving the above object, the technical solution used in the present invention is:
A kind of lithium ion battery method for winding is 10～100m baking box by a segment length with the barrier film of whole volume with the speed drawing of 3～15m/s continuously, and baking temperature is 45～120 ℃; The barrier film of handling through prebake conditions cooperates with electrode slice and carries out continuous reeling through half-automatic winder, automatic winding-machine and produce electric core.
Described speed is 5m/s.
Described baking box length is 20m.
Described baking temperature is 98 ℃.
Beneficial effect of the present invention: after the barrier film after the process prebake conditions is handled was used for reeling, when the volume core toasted before fluid injection, the shrinkage phenomenon of barrier film can alleviate greatly, and this can effectively improve the high problem of super thick fraction defective that causes because roll up the core fold; Can improve cell thickness; What barrier film adopted is the baking continuously of whole volume, and middle spacer film does not need disconnected cutting, and barrier film can be used for half-automatic winder, automatic winding-machine carries out continuous reeling production after prebake conditions; Cost is lower, operation is comparatively convenient, efficient is higher.
Description of drawings
Fig. 1 handles schematic diagram for barrier film prebake conditions according to the preferred embodiment of the invention
Embodiment
Embodiment 1
With reference to figure 1, earlier barrier film is carried out prebake conditions.Barrier film 3 is wound on and unreels on 1, unreel 1 and rolling 4 lay respectively at the left and right sides of baking box 2.Start unreel 1 and rolling 4 barrier film 3 is advanced with the speed of 5m/s in the direction of arrows, in baking box 2, toast, baking box 2 length are 20m, temperature is 98 ℃.The electrode slice of the barrier film appropriate mix that the use prebake conditions is crossed is produced 5000, battery size: 523450AR-1050mAh with the half-automatic winder coiling.
Embodiment 2
Membrane coil does not adopt any processing around preceding.Produce battery size: 523450AR-1050mAh, produce 5000 with half-automatic winder.
Embodiment 3
According to the detection method of routine, detect the thickness of finished product battery, testing result is shown in table 1 and table 2.
Can see obviously that from table 1 correction data the 1 super thick fraction defective of embodiment that adopts the inventive method barrier film to be carried out the prebake conditions processing is lower by 1.96% than embodiment 2, improves the effect highly significant.
Table 1.
Can obviously see from table 2. correction data (randomly draw the qualified battery of 25pcs thickness for every group and measure thickness), adopt the inventive method will hang down 0.07mm than embodiment 2 to the embodiment 1 cell thickness mean value that barrier film carries out the prebake conditions processing, average thickness has obvious reduction.
Table 2
Among the present invention, can in 3～15m/s, 10～100m and 45～120 ℃ of scopes, the choosing arbitrarily respectively of the hauling speed of barrier film, baking box length, baking temperature, implementation result is more or less the same.
Claims (4)
1. lithium ion battery method for winding is characterized in that: the barrier film that will put in order volume is 10～100m baking box by a segment length with the speed drawing of 3～15m/s continuously, and baking temperature is 45～120 ℃; The barrier film of handling through prebake conditions cooperates with electrode slice and carries out continuous reeling through half-automatic winder, automatic winding-machine and produce electric core.
2. lithium ion battery method for winding according to claim 1 is characterized in that: described speed is 5m/s.
3. lithium ion battery method for winding according to claim 1 is characterized in that: described baking box length is 20m.
4. lithium ion battery method for winding according to claim 1 is characterized in that: described baking temperature is 98 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102113580A CN102299381A (en) | 2010-06-23 | 2010-06-23 | Winding method of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102113580A CN102299381A (en) | 2010-06-23 | 2010-06-23 | Winding method of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102299381A true CN102299381A (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010102113580A Pending CN102299381A (en) | 2010-06-23 | 2010-06-23 | Winding method of lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018054239A1 (en) * | 2016-09-22 | 2018-03-29 | Grst International Limited | Method of preparing electrode assemblies |
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| US20030194607A1 (en) * | 2002-04-10 | 2003-10-16 | Sui-Yang Huang | Polymer-gel lithium ion battery |
| CN101075664A (en) * | 2007-04-05 | 2007-11-21 | 蔡松珊 | Lithium-ion battery blind flange, and lithium-ion cell or battery therewith |
| CN101227016A (en) * | 2008-02-02 | 2008-07-23 | 深圳市贝特瑞新能源材料股份有限公司 | Lithium ion power cell |
| CN201161230Y (en) * | 2007-12-25 | 2008-12-10 | 深圳市邦凯电子有限公司 | Membrane coating machine |
| CN101577324A (en) * | 2009-05-27 | 2009-11-11 | 温岭市恒泰电池有限公司 | Mixed type anode sizing agent of LiFePO4 battery and LiFePO4 battery using the anode sizing agent |
| CN101609747A (en) * | 2009-07-07 | 2009-12-23 | 吴江飞乐天和电子材料有限公司 | A kind of production method of super capacitor electrode foil |
| CN101626095A (en) * | 2009-07-30 | 2010-01-13 | 天津力神电池股份有限公司 | Diagram modification method for improving safety of lithium ion battery |
-
2010
- 2010-06-23 CN CN2010102113580A patent/CN102299381A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030194607A1 (en) * | 2002-04-10 | 2003-10-16 | Sui-Yang Huang | Polymer-gel lithium ion battery |
| CN101075664A (en) * | 2007-04-05 | 2007-11-21 | 蔡松珊 | Lithium-ion battery blind flange, and lithium-ion cell or battery therewith |
| CN201161230Y (en) * | 2007-12-25 | 2008-12-10 | 深圳市邦凯电子有限公司 | Membrane coating machine |
| CN101227016A (en) * | 2008-02-02 | 2008-07-23 | 深圳市贝特瑞新能源材料股份有限公司 | Lithium ion power cell |
| CN101577324A (en) * | 2009-05-27 | 2009-11-11 | 温岭市恒泰电池有限公司 | Mixed type anode sizing agent of LiFePO4 battery and LiFePO4 battery using the anode sizing agent |
| CN101609747A (en) * | 2009-07-07 | 2009-12-23 | 吴江飞乐天和电子材料有限公司 | A kind of production method of super capacitor electrode foil |
| CN101626095A (en) * | 2009-07-30 | 2010-01-13 | 天津力神电池股份有限公司 | Diagram modification method for improving safety of lithium ion battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018054239A1 (en) * | 2016-09-22 | 2018-03-29 | Grst International Limited | Method of preparing electrode assemblies |
| CN107871843A (en) * | 2016-09-22 | 2018-04-03 | 皓智环球有限公司 | The method for preparing electrode assemblie |
| US10084178B2 (en) | 2016-09-22 | 2018-09-25 | Grst International Limited | Method of preparing electrode assemblies |
| KR20190039836A (en) * | 2016-09-22 | 2019-04-15 | 쥐알에스티 인터내셔널 리미티드 | Method for manufacturing electrode assembly |
| KR102072519B1 (en) * | 2016-09-22 | 2020-03-03 | 쥐알에스티 인터내셔널 리미티드 | Method of manufacturing the electrode assembly |
| CN107871843B (en) * | 2016-09-22 | 2021-02-26 | 皓智环球有限公司 | Method of preparing electrode assembly |
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Application publication date: 20111228 |