CN103779610A - Polymer lithium battery production process - Google Patents
Polymer lithium battery production process Download PDFInfo
- Publication number
- CN103779610A CN103779610A CN201210400627.7A CN201210400627A CN103779610A CN 103779610 A CN103779610 A CN 103779610A CN 201210400627 A CN201210400627 A CN 201210400627A CN 103779610 A CN103779610 A CN 103779610A
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- CN
- China
- Prior art keywords
- electrolyte
- core
- winding core
- baking
- lithium battery
- 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.)
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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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a polymer lithium battery production process, which comprises: material preparation, sheet production, winding, winding core baking, immersion of the winding core into an electrolyte, packaging, formation and capacity separation. According to the present invention, the winding core is subjected to vacuum baking before packaging, such that heat easily permeates into the winding core, the required temperature is moderate, and the baking time is short so as to improve the winding core baking efficiency; the winding core is immersed into the electrolyte before packaging, the electrolyte use amount is less, and the electrolyte easily penetrates into the winding core, such that the soaking time in the electrolyte is substantially shortened, the material cost is reduced, and the subsequent operation can not cause the electrolyte pollution; the process of the present invention is different from the existing technology adopting the HIBAR pump to carry out liquid injection on the single electronic core, wherein a plurality of winding cores can be soaked into the electrolyte so as to significantly improve the production efficiency; and the packaging is performed after the winding core is immersed into the electrolyte, such that the plastic inner layer of the aluminum plastic package film is not soaked into the electrolyte during packaging so as to increase the heat sealing strength during packaging and reduce the liquid leakage risk.
Description
Technical field
The invention belongs to lithium battery field, relate in particular to a kind of poly-lithium battery production technology.
Background technology
At present, existing poly-lithium battery production technology comprises following flow process: batching～film-making～coiling～encapsulation～baking～fluid injection～change into～partial volume, and this technique has following shortcoming:
(1) baking after encapsulation, heat is difficult for infiltration volume core inner, needs temperature higher, and baking time is (being generally 80～85 ℃, 24～36h) for a long time;
(2) volume core wraps in fluid injection in aluminum plastic film, and electrolyte is difficult for infiltration, needs long-time (14～20h) to leave standstill after fluid injection, to guarantee that electrolyte soaks into completely, and electrolyte that must be many, thereby increased material cost, and leave hidden danger for subsequent operation causes electrolyte contamination;
(3) fluid injection at present generally uses HighPower pump to single battery core fluid injection, and efficiency is lower;
(4) inner plastic of plastic-aluminum packaging film (being generally PP) affects package strength after electrolyte soaks, and leakage risk strengthens.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, the poly-lithium battery that a kind of baking temperature is low, soak time is short, production efficiency is high and heat seal strength is high production technology is provided.
The present invention is achieved in that a kind of poly-lithium battery production technology, comprises following production procedure: batching～film-making～coiling～volume core toasts～rolls up core and immerses electrolyte～encapsulate～change into～partial volume.
Particularly, in the step of described volume core baking, volume core is under vacuum environment, and baking temperature is 65～80 ℃, and baking time is 6～18h.
Particularly, described volume core immerses in the step of electrolyte, and the environment dew point temperature of electrolyte is-50 ℃～-20 ℃.
Particularly, described volume core immerses in the step of electrolyte, and the soak time of volume core is 1～10h.
Particularly, described in remove in electrolyte step, the electrolyte that adopts centrifugal or vacuum mode that volume in-core pole piece barrier film is not absorbed is completely removed.
Compared with existing poly-lithium battery production technology, the present invention has following beneficial effect:
(1) the present invention carried out vacuum bakeout to volume core before encapsulation, and heat easily permeates volume core inner, and the temperature needing is moderate, and baking time is short, had improved the baking efficiency of volume core;
(2) different from prior art fluid injection after the encapsulation of volume core and baking, the present invention will roll up core and immerse electrolyte before encapsulation, electrolyte use amount is few, and electrolyte is easy to be penetrated into volume in-core, greatly shorten electrolyte soak time, because electrolyte use amount is few, also reduce material cost, subsequent operation can not cause electrolyte contamination yet;
(3) adopt HighPower pump different to single battery core fluid injection from prior art, the present invention can soak multiple volume cores simultaneously in electrolyte, has significantly improved production efficiency;
(4) the present invention encapsulates after volume core immerses electrolyte again, and while therefore encapsulation, the inner plastic of plastic-aluminum packaging film does not soak through electrolyte, and the heat seal strength can increase encapsulation time reduces leakage risk.
Embodiment
The production procedure of the poly-lithium battery production technology that the embodiment of the present invention provides is: batching～film-making～coiling～volume core toasts～rolls up core and immerses electrolyte～encapsulate～change into～partial volume.
Concrete production procedure of the present invention is: after batching, film-making, coiling are made volume core, then under temperature is the vacuum environment of 65～80 ℃, volume core is toasted, baking time is 6～18h, to remove the moisture on volume core; Then in dew point temperature is the environment of-50 ℃～-20 ℃ (preferably-36 ℃), multiple volume cores are arranged in to (lug upwards) in square container, in container, inject electrolyte, electrolyte is no more than the tab of volume core, soak time is 1～10h, after completing, remove (can be recycled) by remaining electrolyte in container, then adopt electrolyte centrifugal or that vacuum mode does not absorb volume in-core pole piece barrier film completely to remove; Then encapsulate, prevent electrolyte contamination; After encapsulation, can change into, need not leave standstill; After changing into, carry out again partial volume.
Compared with existing poly-lithium battery production technology, the present invention has following beneficial effect:
(1) the present invention carried out vacuum bakeout to volume core before encapsulation, and heat easily permeates volume core inner, and the temperature needing is moderate, and baking time is short, had improved the baking efficiency of volume core;
(2) different from prior art fluid injection after the encapsulation of volume core and baking, the present invention will roll up core and immerse electrolyte before encapsulation, electrolyte use amount is few, and electrolyte is easy to be penetrated into volume in-core, greatly shorten electrolyte soak time, because electrolyte use amount is few, also reduce material cost, subsequent operation can not cause electrolyte contamination yet;
(3) adopt HighPower pump different to single battery core fluid injection from prior art, the present invention can soak multiple volume cores simultaneously in electrolyte, has significantly improved production efficiency;
(4) the present invention encapsulates after volume core immerses electrolyte again, and while therefore encapsulation, the inner plastic of plastic-aluminum packaging film does not soak through electrolyte, and the heat seal strength can increase encapsulation time reduces leakage risk.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (5)
1. a poly-lithium battery production technology, is characterized in that comprising following production procedure: batching～film-making～coiling～volume core toasts～rolls up core and immerses electrolyte～encapsulate～change into～partial volume.
2. poly-lithium battery production technology according to claim 1, is characterized in that, in the step of described volume core baking, volume core is under vacuum environment, and baking temperature is 65～80 ℃, and baking time is 6～18h.
3. poly-lithium battery production technology according to claim 1, is characterized in that, described volume core immerses in the step of electrolyte, and the environment dew point temperature of electrolyte is-50 ℃～-20 ℃.
4. poly-lithium battery production technology according to claim 1, is characterized in that, described volume core immerses in the step of electrolyte, and the soak time of volume core is 1～10h.
5. poly-lithium battery production technology according to claim 1, is characterized in that, described in remove in electrolyte step, the electrolyte that adopts centrifugal or vacuum mode that volume in-core pole piece barrier film is not absorbed is completely removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210400627.7A CN103779610A (en) | 2012-10-19 | 2012-10-19 | Polymer lithium battery production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210400627.7A CN103779610A (en) | 2012-10-19 | 2012-10-19 | Polymer lithium battery production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103779610A true CN103779610A (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210400627.7A Pending CN103779610A (en) | 2012-10-19 | 2012-10-19 | Polymer lithium battery production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103779610A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577203A (en) * | 2014-05-21 | 2015-04-29 | 深圳市格瑞普电池有限公司 | Preparation method of lithium ion battery |
| CN105322232A (en) * | 2015-10-16 | 2016-02-10 | 广东烛光新能源科技有限公司 | Preparation method of electrochemical cell |
| CN106848409A (en) * | 2016-12-12 | 2017-06-13 | 覃婷 | A kind of lithium battery production technology |
| CN107994261A (en) * | 2017-11-27 | 2018-05-04 | 覃晓捷 | A kind of soft bag lithium ionic cell production method |
| CN110690506A (en) * | 2019-09-30 | 2020-01-14 | 深圳君耀投资合伙企业(有限合伙) | Lithium ion battery assembling method and lithium ion battery |
| CN110718669A (en) * | 2019-09-06 | 2020-01-21 | 惠州锂威新能源科技有限公司 | Manufacturing process of soft package lithium ion battery |
| CN110854439A (en) * | 2019-09-30 | 2020-02-28 | 深圳君耀投资合伙企业(有限合伙) | Lithium ion battery assembling method and lithium ion battery |
| CN114142184A (en) * | 2021-11-27 | 2022-03-04 | 桂林理工大学 | Lithium ion battery liquid injection method |
| CN114744380A (en) * | 2022-05-18 | 2022-07-12 | 东莞凯德新能源有限公司 | Full-tab battery preparation process and full-tab battery |
-
2012
- 2012-10-19 CN CN201210400627.7A patent/CN103779610A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577203A (en) * | 2014-05-21 | 2015-04-29 | 深圳市格瑞普电池有限公司 | Preparation method of lithium ion battery |
| CN105322232A (en) * | 2015-10-16 | 2016-02-10 | 广东烛光新能源科技有限公司 | Preparation method of electrochemical cell |
| CN106848409A (en) * | 2016-12-12 | 2017-06-13 | 覃婷 | A kind of lithium battery production technology |
| CN107994261A (en) * | 2017-11-27 | 2018-05-04 | 覃晓捷 | A kind of soft bag lithium ionic cell production method |
| CN110718669A (en) * | 2019-09-06 | 2020-01-21 | 惠州锂威新能源科技有限公司 | Manufacturing process of soft package lithium ion battery |
| CN110690506A (en) * | 2019-09-30 | 2020-01-14 | 深圳君耀投资合伙企业(有限合伙) | Lithium ion battery assembling method and lithium ion battery |
| CN110854439A (en) * | 2019-09-30 | 2020-02-28 | 深圳君耀投资合伙企业(有限合伙) | Lithium ion battery assembling method and lithium ion battery |
| CN110854439B (en) * | 2019-09-30 | 2021-08-10 | 深圳君耀投资合伙企业(有限合伙) | Lithium ion battery assembling method and lithium ion battery |
| CN114142184A (en) * | 2021-11-27 | 2022-03-04 | 桂林理工大学 | Lithium ion battery liquid injection method |
| CN114744380A (en) * | 2022-05-18 | 2022-07-12 | 东莞凯德新能源有限公司 | Full-tab battery preparation process and full-tab battery |
| CN114744380B (en) * | 2022-05-18 | 2024-05-17 | 东莞凯德新能源有限公司 | Preparation process of all-tab battery and all-tab battery |
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Application publication date: 20140507 |