CN101399328A - Liquid injection process for core of lithium ionic cell - Google Patents
Liquid injection process for core of lithium ionic cell Download PDFInfo
- Publication number
- CN101399328A CN101399328A CNA200710030564XA CN200710030564A CN101399328A CN 101399328 A CN101399328 A CN 101399328A CN A200710030564X A CNA200710030564X A CN A200710030564XA CN 200710030564 A CN200710030564 A CN 200710030564A CN 101399328 A CN101399328 A CN 101399328A
- Authority
- CN
- China
- Prior art keywords
- electric core
- electrolyte
- liquid injection
- ion battery
- injection process
- 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
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- 238000002347 injection Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 8
- 229910052744 lithium Inorganic materials 0.000 title claims description 8
- 239000003792 electrolyte Substances 0.000 claims abstract description 43
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000007774 positive electrode material Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000009736 wetting 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
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a liquid injection process of an electric core of a lithium-ion battery, the liquid injection process comprises: (S1) when in liquid injection of the electric core of the lithium-ion battery, 70-90 percent of the total amount of pre-determined electrolyte is firstly injected for being placed for 14-20 hours; (S2) the pre-charging is carried out on the electric core, the charging condition is that the charging is carried out for 210-1200 minutes at 0.06-0.2C; (S3) the residual electrolyte is injected in the electric core after the completion of the pre-charging under the vacuum pumping condition, and the sealing is carried out for the preparation. The process can improve the performance of the electric core, improve the gram capacity exertion of positive electrode material and improve the capacity of the electric core and the cycle retention rate of a platform; the electrolyte is saved, the production cost of the electric core is reduced, the environmental air is improved, and the service life of a device is prolonged.
Description
[technical field]
The present invention relates to the lithium ion battery field, relate in particular to a kind of liquid injection process of lithium ion battery cell.
[background technology]
Lithium ion battery cell can form fine and close solid electrolyte phase boundary facial mask (Solid electrolyte interphase, abbreviation SEI) on the electrode particle surface when using the preliminary filling of low current charge.In the chemical reaction process that forms SEI, be accompanied by gas and generate, and some gases can't be discharged between electrode, cause the performance to electric core that harmful effect is arranged; The gas of Pai Chuing will be taken more electrolyte out of simultaneously, cause the corrosion of electrolyte waste, equipment and the pollution of environment.
Lithium ion battery cell generally adopts liquid injection process one time in the course of processing, the disposable electrolyte that injects q.s fully.In the fluid injection process, make that owing to forming the SEI generated reactive gas fluid injection difficulty, at this moment common processing method are that the electric core after the fluid injection is first shelved a period of time, and then carry out the secondary fluid injection.In this case, obtain carrying out after fully wetting opening when changing at electric core pole piece, because pole piece and electrolyte reaction generate the SEI film, produced a certain amount of gas, there are surface tension in gas and shell wall, pole piece and barrier film etc., under the very little situation of housing inner and outer air pressure difference, portion gas still rests on electric in-core, causes the performance to electric core that harmful effect is arranged; Simultaneously, the gas of discharge can be taken a part of electrolyte out of, wastes electrolyte on the one hand, etching apparatus, and the volatilization that the outer on the other hand electrolyte that overflows produces causes very big pollution to environment.
[summary of the invention]
Goal of the invention of the present invention provides a kind of liquid injection process of lithium ion battery cell, to reach the purpose of improving the lithium ion battery cell performance.
To achieve the above object of the invention, the present invention proposes following technical scheme:
A kind of liquid injection process of lithium ion battery cell comprises following steps:
The S1 lithium battery electric core injects 70～90% of predetermined electrolyte total amount first when fluid injection, placed 14～20 hours;
S2 carries out precharge with above-mentioned electric core, and charge condition is 0.06～0.2C charging 210～1200 minutes;
S3 injects the electrolyte of surplus to finishing precharge electric core afterwards under the condition of vacuumizing, and seals promptly.
Preferably, among the above-mentioned steps S1, the electrolyte of injection is 70% of predetermined electrolyte total amount.
Preferably, among the above-mentioned steps S1, the electrolyte of injection is 80% of predetermined electrolyte total amount.
Preferably, among the above-mentioned steps S1, the electrolyte of injection is 90% of predetermined electrolyte total amount.
Preferably, among the above-mentioned steps S1, be 16 hours standing time.
Preferably, among the above-mentioned steps S2, charge condition is 0.06C charging 1200 minutes, or 0.2C charging 210 minutes, or 1C charging 390 minutes.
Implementing the beneficial effect that liquid injection process brought that improves the lithium ion battery cell performance provided by the present invention is, the performance that this technology can be improved electric core (improves the gram volume performance of positive electrode, improve the circulation conservation rate of electric core capacity and platform), save electrolyte, reduced electric core production cost; Improve surrounding air, improved the useful life of equipment.
[embodiment]
Embodiment 1
Lithium ion battery cell is carried out fluid injection, inject first according to 60% of the required electrolyte total amount of predetermined technological requirement, displayed then 16 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.1C charging 390 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
The anodal cobalt acid lithium that adopts, negative pole adopts graphite, electric core model 423048A2, nominal capacity 650mAh, the compacted density of positive plate is 3.82g/cm
3, the compacted density of negative plate is 1.59g/cm
3(compacted density of both positive and negative polarity all is in normal use value scope).The gram volume of measuring the electric core positive electrode of present embodiment is brought into play data such as the circulation conservation rate of (the negative pole amount guarantees under excessive a certain proportion of prerequisite), electric core capacity and platform, thickness, platform, and the result is as shown in table 1.
Embodiment 2
Lithium ion battery cell is carried out fluid injection, inject first according to 70% of the required electrolyte total amount of predetermined technological requirement, displayed then 16 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.1C charging 390 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
The anodal cobalt acid lithium that adopts, negative pole adopts graphite, electric core model 423048A2, nominal capacity 650mAh, the compacted density of positive plate is 3.82g/cm
3, the compacted density of negative plate is 1.59g/cm
3(compacted density of both positive and negative polarity all is in normal use value scope).The gram volume of measuring the electric core positive electrode of present embodiment is brought into play data such as the circulation conservation rate of (the negative pole amount guarantees under excessive a certain proportion of prerequisite), electric core capacity and platform, thickness, platform, and the result is as shown in table 1.
Embodiment 3
Lithium ion battery cell is carried out fluid injection, inject first according to 80% of the required electrolyte total amount of predetermined technological requirement, displayed then 16 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.1C charging 390 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
The anodal cobalt acid lithium that adopts, negative pole adopts graphite, electric core model 423048A2, nominal capacity 65CmAh, the compacted density of positive plate is 3.82g/cm
3, the compacted density of negative plate is 1.59g/cm
3(compacted density of both positive and negative polarity all is in normal use value scope).The gram volume of measuring the electric core positive electrode of present embodiment is brought into play data such as the circulation conservation rate of (the negative pole amount guarantees under excessive a certain proportion of prerequisite), electric core capacity and platform, thickness, platform, and the result is as shown in table 1.
Embodiment 4
Lithium ion battery cell is carried out fluid injection, inject first according to 90% of the required electrolyte total amount of predetermined technological requirement, displayed then 16 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.1C charging 390 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
The anodal cobalt acid lithium that adopts, negative pole adopts graphite, electric core model 423048A2, nominal capacity 650mAh, the compacted density of positive plate is 3.82g/cm
3, the compacted density of negative plate is 1.59g/cm
3(compacted density of both positive and negative polarity all is in normal use value scope).The gram volume of measuring the electric core positive electrode of present embodiment is brought into play data such as the circulation conservation rate of (the negative pole amount guarantees under excessive a certain proportion of prerequisite), electric core capacity and platform, thickness, platform, and the result is as shown in table 1.
Embodiment 5
Lithium ion battery cell is carried out fluid injection, inject first according to 75% of the required electrolyte total amount of predetermined technological requirement, displayed then 14 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.06C charging 1200 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
Embodiment 6
Lithium ion battery cell is carried out fluid injection, inject first according to 75% of the required electrolyte total amount of predetermined technological requirement, displayed then 20 hours, go up cotton and plug gum cover again, with preliminary filling cabinet on the electric core, precharge (0.2C charging 210 minutes), cabinet under the electric core, secondary fluid injection under the condition of vacuumizing then (replenishing the electrolyte of annotating as surplus) changes sealing process at last over to.
Comparative Examples
Lithium ion battery cell is carried out fluid injection, directly inject whole electrolyte (100%) of predetermined technological requirement, seal then.
The anodal cobalt acid lithium that adopts, negative pole adopts graphite, electric core model 423048A2, nominal capacity 650mAh, the compacted density of positive plate is 3.82g/cm
3, the compacted density of negative plate is 1.59g/cm
3(compacted density of both positive and negative polarity all is in normal use value scope).The gram volume of measuring the electric core positive electrode of this Comparative Examples is brought into play data such as the circulation conservation rate of (the negative pole amount guarantees under excessive a certain proportion of prerequisite), electric core capacity and platform, thickness, platform, and the result is as shown in table 1.
The performance of table 1 embodiment 1-4 and Comparative Examples gained electricity core relatively
The data result of table 1 shows, aspect the anodal gram volume performance of 1C performance, internal resistance, thickness, platform and loop-around data, performance difference between the embodiment 2～4 is little and compare with Comparative Examples and to have greatly improved, and embodiment 1 data result of comparing with other embodiment differs bigger.Therefore, after once annotating 70%～90% electrolyte, precharge then replenishes residue electrolyte again, and technological effect of the present invention is better.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the liquid injection process of a lithium ion battery cell is characterized in that, comprises following steps: the S1 lithium battery electric core injects 70～90% of predetermined electrolyte total amount first when fluid injection, places 14～20 hours;
S2 carries out precharge with above-mentioned electric core, and charge condition is 0.06～0.2C charging 210～1200 minutes;
S3 seals, promptly finishing precharge electric core afterwards injects surplus under the condition of vacuumizing electrolyte.
2. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the electrolyte that injects among the described step S1 is 70% of predetermined electrolyte total amount.
3. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the electrolyte that injects among the described step S1 is 80% of predetermined electrolyte total amount.
4. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the electrolyte that injects among the described step S1 is 90% of predetermined electrolyte total amount.
5. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, among the described step S1, injecting the time of placing behind the electrolyte first is 16 hours.
6. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the charge condition among the described step S2 is 0.06C charging 1200 minutes.
7. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the charge condition among the described step S2 is 0.2C charging 210 minutes.
8. the liquid injection process of lithium ion battery cell according to claim 1 is characterized in that, the charge condition among the described step S2 is 1C charging 390 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710030564XA CN101399328A (en) | 2007-09-28 | 2007-09-28 | Liquid injection process for core of lithium ionic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710030564XA CN101399328A (en) | 2007-09-28 | 2007-09-28 | Liquid injection process for core of lithium ionic cell |
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| Publication Number | Publication Date |
|---|---|
| CN101399328A true CN101399328A (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710030564XA Pending CN101399328A (en) | 2007-09-28 | 2007-09-28 | Liquid injection process for core of lithium ionic cell |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148842A1 (en) * | 2009-06-26 | 2010-12-29 | Byd Company Limited | Lithium ion battery |
| CN102255105A (en) * | 2011-06-10 | 2011-11-23 | 东莞新能源科技有限公司 | Lithium ion battery with adoption of secondary electrolyte injection |
| CN102280610A (en) * | 2011-07-12 | 2011-12-14 | 长沙业翔能源科技有限公司 | Liquid-injection process of low-temperature lithium ion battery cell |
| CN102290557A (en) * | 2011-07-19 | 2011-12-21 | 深圳邦凯新能源股份有限公司 | Liquid injection process of lithium ion battery cell |
| CN102637903A (en) * | 2012-04-06 | 2012-08-15 | 宁德新能源科技有限公司 | Formation method of lithium ion battery |
| CN103872381A (en) * | 2012-12-17 | 2014-06-18 | 北汽福田汽车股份有限公司 | Liquid-injection standing method for power cell |
| CN105655644A (en) * | 2015-12-29 | 2016-06-08 | 东莞新能源科技有限公司 | Lithium ion battery and preparation method thereof |
| CN106067561A (en) * | 2016-07-19 | 2016-11-02 | 湖北金泉新材料有限责任公司 | A kind of lithium ion battery chemical synthesis technology |
| CN107579281A (en) * | 2017-08-31 | 2018-01-12 | 北京军秀咨询有限公司 | A kind of formation method of high-capacity power lithium iron phosphate battery |
| CN109326764A (en) * | 2018-08-24 | 2019-02-12 | 台州钱江新能源研究院有限公司 | A kind of lithium-ion battery electrolytes ownership precision control method |
| CN109524614A (en) * | 2018-11-14 | 2019-03-26 | 湖南安德丰新能源科技有限公司 | A kind of secondary electrolyte filling method in lithium battery preparation |
| CN111628136A (en) * | 2020-06-04 | 2020-09-04 | 萨姆蒂萨（天津）数据信息技术有限公司 | Lithium ion pole piece battery pack liquid injection and opening activation method |
| CN112736321A (en) * | 2020-12-30 | 2021-04-30 | 芜湖天弋能源科技有限公司 | Cooling device for lithium ion cell liquid injection and liquid injection method |
| CN113871728A (en) * | 2021-09-15 | 2021-12-31 | 湖南立方新能源科技有限责任公司 | Lithium ion battery and preparation method thereof |
-
2007
- 2007-09-28 CN CNA200710030564XA patent/CN101399328A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148842A1 (en) * | 2009-06-26 | 2010-12-29 | Byd Company Limited | Lithium ion battery |
| US8252438B2 (en) | 2009-06-26 | 2012-08-28 | Byd Co., Ltd. | Lithium ion battery |
| CN102255105A (en) * | 2011-06-10 | 2011-11-23 | 东莞新能源科技有限公司 | Lithium ion battery with adoption of secondary electrolyte injection |
| CN102280610A (en) * | 2011-07-12 | 2011-12-14 | 长沙业翔能源科技有限公司 | Liquid-injection process of low-temperature lithium ion battery cell |
| CN102290557A (en) * | 2011-07-19 | 2011-12-21 | 深圳邦凯新能源股份有限公司 | Liquid injection process of lithium ion battery cell |
| CN102637903A (en) * | 2012-04-06 | 2012-08-15 | 宁德新能源科技有限公司 | Formation method of lithium ion battery |
| CN103872381A (en) * | 2012-12-17 | 2014-06-18 | 北汽福田汽车股份有限公司 | Liquid-injection standing method for power cell |
| CN103872381B (en) * | 2012-12-17 | 2015-12-09 | 北汽福田汽车股份有限公司 | A kind of fluid injection of electrokinetic cell leaves standstill method |
| CN105655644A (en) * | 2015-12-29 | 2016-06-08 | 东莞新能源科技有限公司 | Lithium ion battery and preparation method thereof |
| CN105655644B (en) * | 2015-12-29 | 2019-01-22 | 东莞新能源科技有限公司 | Lithium ion battery and preparation method thereof |
| CN106067561A (en) * | 2016-07-19 | 2016-11-02 | 湖北金泉新材料有限责任公司 | A kind of lithium ion battery chemical synthesis technology |
| CN107579281A (en) * | 2017-08-31 | 2018-01-12 | 北京军秀咨询有限公司 | A kind of formation method of high-capacity power lithium iron phosphate battery |
| CN109326764A (en) * | 2018-08-24 | 2019-02-12 | 台州钱江新能源研究院有限公司 | A kind of lithium-ion battery electrolytes ownership precision control method |
| CN109326764B (en) * | 2018-08-24 | 2021-08-03 | 台州钱江新能源研究院有限公司 | Lithium ion battery electrolyte retention amount precise control method |
| CN109524614A (en) * | 2018-11-14 | 2019-03-26 | 湖南安德丰新能源科技有限公司 | A kind of secondary electrolyte filling method in lithium battery preparation |
| CN111628136A (en) * | 2020-06-04 | 2020-09-04 | 萨姆蒂萨（天津）数据信息技术有限公司 | Lithium ion pole piece battery pack liquid injection and opening activation method |
| CN112736321A (en) * | 2020-12-30 | 2021-04-30 | 芜湖天弋能源科技有限公司 | Cooling device for lithium ion cell liquid injection and liquid injection method |
| CN112736321B (en) * | 2020-12-30 | 2022-08-05 | 芜湖天弋能源科技有限公司 | Cooling device for lithium ion cell liquid injection and liquid injection method |
| CN113871728A (en) * | 2021-09-15 | 2021-12-31 | 湖南立方新能源科技有限责任公司 | Lithium ion battery and preparation method thereof |
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Application publication date: 20090401 |