CN1797835A - Vacuum seal method of square shaped lithium ion secondary battery - Google Patents
Vacuum seal method of square shaped lithium ion secondary battery Download PDFInfo
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- CN1797835A CN1797835A CNA2004100940668A CN200410094066A CN1797835A CN 1797835 A CN1797835 A CN 1797835A CN A2004100940668 A CNA2004100940668 A CN A2004100940668A CN 200410094066 A CN200410094066 A CN 200410094066A CN 1797835 A CN1797835 A CN 1797835A
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- battery
- negative pressure
- lithium ion
- ion secondary
- square shaped
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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
After charging liquid to square shaped lithium ion secondary battery, the method does not close down charge opening directly, instead charges up the battery in small current for a certain time. Next, the battery is placed in vacuum chamber, which is vacuumized to negative pressure; the negative pressure is maintained for a period of time; then, pressure is released. The said step is repeated for one or two times. The vacuum chamber is vacuumized to negative pressure again, and then the negative pressure is maintained for a period of time. Under condition of the negative pressure, the charge opening is closed down. The method lightens issue of battery ballooning caused by charging procedure as well as issue of lowered battery performance caused by battery ballooning.
Description
Technical field
The present invention relates to a kind of new sealing tech of square shaped lithium ion secondary battery.With the square shaped lithium ion secondary battery that this method is produced, can alleviate the battery bulging problem and because the problem that some battery performances that the battery bulging is brought descend that cause in the charging process to a great extent.
Technical background
Along with the development of portable electronics to miniaturization, also be faced with the trend of miniaturization as the lithium rechargeable battery in one of its major impetus source, in the process that reduces the battery volume, in order to obtain higher battery capacity, manufacturer tends to reduce shell thickness, if at this moment still adopt method to direct sealing under the non-negative pressure state behind the battery liquid-filling, the battery bulging problem that will make the gas that produces in charging process bring also highlights, simultaneously because the problem that the battery performance that the battery bulging causes descends also will have influence on the development of lithium ion battery.
Summary of the invention
The present invention is intended to develop a kind of new mouth-sealing method of square lithium ion battery, to alleviate the bulging problem that produces at lithium rechargeable battery in charging process, reaches the effect that improves the battery various aspects of performance simultaneously.This target has obtained good realization in the present invention.
The present invention is a kind of new mouth-sealing method of square lithium ion battery, its process is after to battery liquid-filling, earlier with little electric current (≤0.3C) the charging certain hour (≤2h), the gas part that generate this moment in charging process can be discharged from liquid injection port, then battery is shelved on be evacuated in the vacuum tank certain negative pressure (0.4MPa ~-0.9MPa), and keep this negative pressure state a period of time (1min ~ 5min), then with the vacuum tank release, repeat this step 1 to twice, thereby reach the purpose of getting rid of the inside battery residual gas, at last negative pressure state (0.4MPa ~-liquid injection port is sealed under 0.9MPa).This moment, inside battery did not have gas substantially, and finished the part formation process, even in follow-up charging process, still have gas to produce, but compare employing to battery liquid-filling after, the battery that the method for direct sealing is produced under non-negative pressure state, the gas that produces in charging process will lack a lot, therefore can well alleviate the bulging problem and because the problem that a series of battery performances that the battery bulging is brought descend of battery.
Characteristics of the present invention are to behind the battery liquid-filling, change into changing in advance more earlier after the fluid injection in the method for direct sealing under the non-negative pressure state and under negative pressure state battery are carried out method for sealing.This method can alleviate the battery bulging problem brought in the battery charging process to a great extent and because the problem that a series of battery performances that the battery bulging is brought descend, improve the qualification rate of product, has significant practical value and economic benefit.
Specific embodiment
Below in conjunction with embodiment invention is further described:
Embodiment 1
With 20 on the 043048 type battery of same method assembling 4mm * 30mm * 48mm, and inject the same electric liquid, then these 20 batteries are divided into two kinds, a kind of 10, represent with A, B respectively with same method.
To the A direct sealing, leave standstill behind the 24h to change into and (change into and be meant with little electric current constant current charge to 4.2V with the 0.1C electric current, constant voltage is charged to 20mA under 4.2V again), leave standstill and carry out reprocessing behind the 48h and (put to 3.0V with the 1C electric current, then with 1C electric current constant current charge to 4.2V, constant voltage is charged to 20mA under 4.2V again, repeats this step then once).
B is left standstill 4h earlier,, be positioned in the vacuum tank battery is upright, be evacuated to-0.8MPa then with 0.1C charging 1h, pressurize 1min, release then is evacuated to-0.8MPa again, and pressurize 1min seals liquid injection port under this negative pressure state then.Change into the 0.1C electric current after the battery that finishes leaves standstill 20h sealing, leave standstill 48h after image A again and equally carry out reprocessing.
Full electric thickness, two is put capacity after two kinds of battery reprocessings of contrast record A, B, finds that the on average full electric thickness of B battery at 4.26mm, significantly better than the 4.52mm of A battery, proves that this sealing tech has well reached the purpose that alleviates the battery bulging.Simultaneously, average two of B battery is put capacity and is exceeded the A battery and reach 14mAh, and the benefit of this sealing tech to the battery capacity aspect of performance has been described.
Get each three on two kinds of batteries of A, B, use U.S. ARBIN tester to carry out the test of 1C charge-discharge performance, after finding 400 circulations of A battery, discharge capacity has only 76.3%, 74.6%, 76.5% of initial capacity respectively, and after 400 circulations of B battery, discharge capacity is respectively 83.6%, 84.7%, 82.3% of initial capacity, and therefore as can be seen, this sealing tech also can reach certain optimization effect to cycle performance of battery.
Claims (7)
1, a kind of vacuum seal method of square shaped lithium ion secondary battery is characterized in that: direct sealing not after to battery liquid-filling, but change in advance earlier, and then under negative pressure state, liquid injection port is sealed.
2, require described vacuum seal method of square shaped lithium ion secondary battery according to right 1, it is characterized in that: the method that changes in advance is under the state that the battery liquid-filling mouth is not sealed, to battery with the low current charge certain hour.
3, require described vacuum seal method of square shaped lithium ion secondary battery according to right 1, it is characterized in that: to the battery vacuum-pumping after changing in advance to negative pressure, and keeping this negative pressure state certain hour, release then repeats then under negative pressure state battery to be sealed several times.
4, according to right 2 described vacuum seal method of square shaped lithium ion secondary battery, it is characterized in that: charging current, this current range is≤0.3C.
5, according to right 2 described vacuum seal method of square shaped lithium ion secondary battery, it is characterized in that: in the charging interval, this time range is≤2h.
6, according to right 3 described vacuum seal method of square shaped lithium ion secondary battery, it is characterized in that in negative pressure, this range of negative pressure is-0.4MPa～-0.9MPa.
7, according to right 3 described vacuum seal method of square shaped lithium ion secondary battery, it is characterized in that: keeping the negative pressure certain hour, this time range is 1min～5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100940668A CN100385726C (en) | 2004-12-28 | 2004-12-28 | Vacuum seal method of square shaped lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100940668A CN100385726C (en) | 2004-12-28 | 2004-12-28 | Vacuum seal method of square shaped lithium ion secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797835A true CN1797835A (en) | 2006-07-05 |
| CN100385726C CN100385726C (en) | 2008-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100940668A Expired - Fee Related CN100385726C (en) | 2004-12-28 | 2004-12-28 | Vacuum seal method of square shaped lithium ion secondary battery |
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| CN (1) | CN100385726C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429856C (en) * | 2006-09-19 | 2008-10-29 | 天津力神电池股份有限公司 | Control device and method for square lithium ion secondary cell precharging |
| CN100438126C (en) * | 2007-01-23 | 2008-11-26 | 天津丰泽科技有限公司 | Fully automatic vacuum capper for square lithium ion battery and its capping method |
| CN101677138A (en) * | 2008-09-17 | 2010-03-24 | 深圳市比克电池有限公司 | Method and device of formatting lithium ion battery |
| CN101609907B (en) * | 2009-07-22 | 2011-01-05 | 湖南业翔晶科新能源有限公司 | Sealing method of lithium-ion secondary battery and vacuum press-sealing device |
| CN102074741A (en) * | 2010-12-06 | 2011-05-25 | 华明电源(深圳)有限公司 | Negative pressure ageing method of lithium ion battery |
| CN102509645A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Super capacitor cell encapsulation method |
| CN103545553A (en) * | 2012-07-11 | 2014-01-29 | 兴能高科技股份有限公司 | Manufacturing method of colloid lithium battery |
| CN104409790A (en) * | 2014-11-27 | 2015-03-11 | 中航锂电（洛阳）有限公司 | Pre-charge formation method for lithium-ion battery |
| CN104953181A (en) * | 2015-05-06 | 2015-09-30 | 中国科学院青岛生物能源与过程研究所 | Process for inhibiting air expansion of lithium ion battery by using lithium titanate as negative electrode |
| CN106711507A (en) * | 2015-11-16 | 2017-05-24 | 襄阳博富能电子实业有限公司 | Forming and produced gas removing method of cylindrical steel-shell lithium titanate battery |
| CN108199085A (en) * | 2017-12-21 | 2018-06-22 | 河北银隆新能源有限公司 | A kind of lithium ion battery vacuum seal method |
| CN109037751A (en) * | 2018-08-08 | 2018-12-18 | 力信（江苏）能源科技有限责任公司 | A kind of method and lithium ion battery for reducing lithium ion battery and welding thickness after PIN |
| CN110057506A (en) * | 2019-04-30 | 2019-07-26 | 蜂巢能源科技有限公司 | Test the method for battery sealing-performance and the method for test battery quality |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10302764A (en) * | 1997-04-24 | 1998-11-13 | Hitachi Electron Eng Co Ltd | Apparatus for filling battery can with electrolytic solution |
| CN1173428C (en) * | 2001-07-13 | 2004-10-27 | 比亚迪股份有限公司 | Method for manufacturing thin lithium ion battery |
| CN1190862C (en) * | 2003-07-30 | 2005-02-23 | 黑龙江中强能源科技有限公司 | Polymer lithium ion battery and its manufacturing method |
-
2004
- 2004-12-28 CN CNB2004100940668A patent/CN100385726C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429856C (en) * | 2006-09-19 | 2008-10-29 | 天津力神电池股份有限公司 | Control device and method for square lithium ion secondary cell precharging |
| CN100438126C (en) * | 2007-01-23 | 2008-11-26 | 天津丰泽科技有限公司 | Fully automatic vacuum capper for square lithium ion battery and its capping method |
| CN101677138B (en) * | 2008-09-17 | 2014-03-12 | 深圳市比克电池有限公司 | Method and device of formatting lithium ion battery |
| CN101677138A (en) * | 2008-09-17 | 2010-03-24 | 深圳市比克电池有限公司 | Method and device of formatting lithium ion battery |
| CN101609907B (en) * | 2009-07-22 | 2011-01-05 | 湖南业翔晶科新能源有限公司 | Sealing method of lithium-ion secondary battery and vacuum press-sealing device |
| CN102074741A (en) * | 2010-12-06 | 2011-05-25 | 华明电源(深圳)有限公司 | Negative pressure ageing method of lithium ion battery |
| CN102509645A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Super capacitor cell encapsulation method |
| CN103545553A (en) * | 2012-07-11 | 2014-01-29 | 兴能高科技股份有限公司 | Manufacturing method of colloid lithium battery |
| CN104409790A (en) * | 2014-11-27 | 2015-03-11 | 中航锂电（洛阳）有限公司 | Pre-charge formation method for lithium-ion battery |
| CN104953181A (en) * | 2015-05-06 | 2015-09-30 | 中国科学院青岛生物能源与过程研究所 | Process for inhibiting air expansion of lithium ion battery by using lithium titanate as negative electrode |
| CN104953181B (en) * | 2015-05-06 | 2017-12-12 | 中国科学院青岛生物能源与过程研究所 | A kind of technique suppressed using lithium titanate as the lithium ion battery flatulence of negative pole |
| CN106711507A (en) * | 2015-11-16 | 2017-05-24 | 襄阳博富能电子实业有限公司 | Forming and produced gas removing method of cylindrical steel-shell lithium titanate battery |
| CN108199085A (en) * | 2017-12-21 | 2018-06-22 | 河北银隆新能源有限公司 | A kind of lithium ion battery vacuum seal method |
| CN109037751A (en) * | 2018-08-08 | 2018-12-18 | 力信（江苏）能源科技有限责任公司 | A kind of method and lithium ion battery for reducing lithium ion battery and welding thickness after PIN |
| CN110057506A (en) * | 2019-04-30 | 2019-07-26 | 蜂巢能源科技有限公司 | Test the method for battery sealing-performance and the method for test battery quality |
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| CN100385726C (en) | 2008-04-30 |
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