CN105762417A - Method for prolonging service life of cylindrical lithium-ion battery - Google Patents
Method for prolonging service life of cylindrical lithium-ion battery Download PDFInfo
- Publication number
- CN105762417A CN105762417A CN201610208188.8A CN201610208188A CN105762417A CN 105762417 A CN105762417 A CN 105762417A CN 201610208188 A CN201610208188 A CN 201610208188A CN 105762417 A CN105762417 A CN 105762417A
- Authority
- CN
- China
- Prior art keywords
- ion battery
- lithium ion
- battery
- discharge
- span
- 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
Classifications
-
- 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
-
- 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
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the technical field of cylindrical batteries and particularly discloses a method for prolonging the service life of a cylindrical lithium-ion battery. The method comprises the step of carrying out circulating charging and discharging on the cylindrical lithium-ion battery with qualified capacity grading by adopting 0-0.5C current at least. The method for prolonging the service life of the cylindrical lithium-ion battery, provided by the embodiment of the invention, is used for carrying out finite circulating charging and discharging on the cylindrical lithium-ion battery with the qualified capacity grading by small current, and active substances of the cylindrical lithium-ion battery are sufficiently activated, so that the infiltration degree of electrolyte on a pole piece is improved, the electrolyte is relatively uniformly distributed in a roll core, and furthermore, the effect of prolonging the cycle life of the battery is realized.
Description
Technical field
The present invention relates to cylindrical battery technical field, particularly relate to a kind of method improving the column lithium ion battery life-span.
Background technology
Due to column lithium ion battery there is capacity height, output voltage is high, cycle charge discharge electrical property is good, output voltage stabilization, can heavy-current discharge, stable electrochemical property, use safety, operating temperature high, thus the application in electric tool and electric automobile field is more and more extensive.
In the prior art, battery roll core is generally first installed in battery container by the fluid injection in the column lithium ion battery manufacturing process of this type, then according to the order installing liquid injection industrial installation, fluid injection, evacuation, recovery atmospheric pressure and standing carries out.This fluid injection mode owing to loading after core to battery case, inside battery limited space, it is easy to occur that sepage is difficult, pole piece absorbent is poor, occur in use procedure in the early stage activating incomplete problem, have impact on the service life of battery to a certain extent.
Summary of the invention
For problems such as activation when the initial stage of existence uses in above-mentioned existing column lithium ion battery technology not exclusively cause that battery cycle life is affected, the purpose of the embodiment of the present invention is in that to provide a kind of method improving the column lithium ion battery life-span.
In order to reach foregoing invention purpose, the embodiment of the present invention have employed following technical scheme:
A kind of method improving the column lithium ion battery life-span, including the step at least adopting the electric current of 0～0.5C that the column lithium ion battery that partial volume is qualified is circulated discharge and recharge.
The method improving the column lithium ion battery life-span that the above embodiment of the present invention provides, adopt small area analysis that the column lithium ion battery that partial volume is qualified carries out the cycle charge-discharge of limited number of time, the active substance making the column lithium ion battery that the initial stage uses is activated fully, especially negative pole is made to expand contraction, to improve the electrolyte infiltration degree to pole piece, electrolyte is made to be distributed inside core more uniform, thus playing the effect improving battery cycle life.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the loop test curve of the ternary material/graphite system battery adopting the method improving the column lithium ion battery life-span to process of the embodiment of the present invention 1 and comparative example 1 offer；
Fig. 2 is the loop test curve of the LiFePO4/graphite 18650 type cylindrical battery battery adopting the method improving the column lithium ion battery life-span to process of the embodiment of the present invention 2 and comparative example 2 offer.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention provides a kind of method improving the column lithium ion battery life-span, including the step at least adopting the electric current of 0～0.5C that the column lithium ion battery that partial volume is qualified is circulated discharge and recharge.
In any embodiment, said method is adopted to be circulated the column lithium ion battery of discharge and recharge, concrete it should be ensured that chemical conversion terminates and partial volume is qualified.
In a preferred embodiment, the electric current of cycle charge-discharge is 0.05C～0.3C；Electric current is too small, it is impossible to realizing the activation completely of core pole piece within short time and limited cycle number of times, production efficiency is low；When the excessive then negative pole dilation degree of electric current and excessive velocities, produce adverse consequences equally.
In a preferred embodiment, when column lithium ion battery is circulated discharge and recharge, the voltage range of cycle charge-discharge is between 2.5V～4.5V.
It is further preferred that when column lithium ion battery is LiFePO4/graphite series battery, cycle charge-discharge voltage range is 2.5V～3.4V；Owing to the running voltage of ferric phosphate lithium cell is 2.0～3.65V, and being circulated charge and discharge with 2.5V～3.4V, electrode can carry out expanding and shrinking in a certain degree, improves activation degree；Meanwhile, efficiently avoid again the discharge and recharge of the degree of depth, make inside battery that unnecessary side reaction will not be occurred to bring the decay of performance.When the battery that cylindrical battery is cobalt acid lithium/graphite series, LiMn2O4/graphite series, ternary material/graphite series, cycle charge-discharge voltage range is 3.2V～4.1V；Owing to cobalt acid lithium/graphite series, LiMn2O4/graphite running voltage serial, ternary material/graphite series battery are 3.0～4.2V, and being circulated charge and discharge with 3.2V～4.1V, electrode can carry out expanding and shrinking in a certain degree, improves activation degree；Meanwhile, efficiently avoid again the discharge and recharge of the degree of depth, make inside battery that unnecessary side reaction will not be occurred to bring the decay of performance.
In any embodiment, it should battery is placed in the environment that temperature is 30～45 DEG C and is circulated discharge and recharge.This mainly can effectively reduce electrolyte viscosity in this temperature range, improves the mobility of electrolyte, but temperature is too high, can produce side reaction, and battery performance is unfavorable.
The method improving the column lithium ion battery life-span that the embodiment of the present invention provides, higher than adopting small area analysis that the battery that forming and capacity dividing is qualified carries out the cycle charge-discharge of limited number of time under ambient temperature, so that the active substance of column lithium ion battery is activated fully, negative pole is made to expand and contraction, promote electrolyte complete wetting core pole piece, electrolyte is distributed inside core more uniform, thus improving the cycle life of battery.This technique needs only to carry out limited number of time shallow after forming and capacity dividing and fills shallow putting, simple, can improve stability and circulating battery service life of product batches quality, be suitable for large-scale industrial production.
In order to better embody the method improving the column lithium ion battery life-span that the embodiment of the present invention provides, further illustrate below by multiple embodiments.
Embodiment 1
(1) ternary material/graphite cell is produced according to normal procedure, this example refers specifically to 18650 cylindrical batteries, after partial volume to be changed, the battery that the amount of trying to please is qualified, it is placed in the environment of 35 DEG C after a period of time, adopt infrared radiation thermometer test battery surface temperature, when battery surface temperature reaches 35 DEG C, with 0.2C electric current 3.2～4.1V scope internal recycle discharge and recharge 10 times；
(2) then battery is placed in room temperature, treats that battery temperature is down to room temperature, with 1C electric current constant-current charge to voltage for 4.2V, charge cutoff electric current is 0.02C, then again with 1C electric current constant-current discharge, discharge cut-off voltage is 3.0V, and cycle performance test result is such as shown in Figure of description 1.
Comparative example 1
18650 batteries that the capacity of the preparation of Example 1 is qualified, are placed in room temperature, and guarantee identical with the condition of embodiment 1 step (2), be circulated discharge and recharge, and cycle performance test result is such as shown in Figure of description 1.
As can be known from Fig. 1, after 800 cycle charge-discharges, the capacity attenuation of the embodiment of the present invention 1 battery is significantly less than comparative example 1, and both highlight gradually battery capacity conservation rate difference, and this illustrates that the cycle performance of battery (life-span) that the processing mode of embodiment 1 obtains is better than comparative example 1.
Embodiment 2
(1) LiFePO4/graphite cell is produced according to normal procedure, this example refers specifically to 18650 cylindrical batteries, after partial volume to be changed, the battery that the amount of trying to please is qualified, it is placed in the environment of 40 DEG C after a period of time, adopt infrared radiation thermometer test battery surface temperature, when battery surface temperature reaches 40 DEG C, with 0.3C electric current 2.5～3.4V scope internal recycle discharge and recharge 15 times；
(2) being then placed in room temperature by battery, with 1C electric current constant-current charge to 3.65V, charge cutoff electric current is 0.02C, and then with 1C constant-current discharge, discharge cut-off voltage is 2.0V, and cycle performance test result is such as shown in Figure of description 2.
Comparative example 2
18650 batteries that the capacity of the preparation of Example 2 is qualified, are placed in room temperature, and guarantee identical with the condition of embodiment 2 step (2), be circulated discharge and recharge, and cycle performance test result is such as shown in Figure of description 2.
As can be known from Fig. 2, after 1200 cycle charge-discharges, the capacity attenuation of the embodiment of the present invention 2 battery is significantly less than comparative example 2, both battery capacity storage rate obvious differences, and this illustrates that the cycle performance of battery (life-span) that the processing mode of embodiment 2 obtains is better than comparative example 2.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement or improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (7)
1. the method improving the column lithium ion battery life-span, it is characterised in that: include the electric current at least adopting 0～0.5C and the column lithium ion battery that partial volume is qualified is circulated the step of discharge and recharge.
2. the method improving the column lithium ion battery life-span as claimed in claim 1, it is characterised in that: the voltage range of described cycle charge-discharge is 2.5V～4.5V.
3. the method improving the column lithium ion battery life-span as described in as arbitrary in claim 1-2, it is characterised in that: the temperature of described cycle charge-discharge is 30～45 DEG C.
4. the method improving the column lithium ion battery life-span as described in as arbitrary in claim 1-2, it is characterised in that: the cycle-index of described cycle charge-discharge is less than 20 times.
5. the method improving the column lithium ion battery life-span as described in as arbitrary in claim 1-2, it is characterised in that: the electric current of described cycle charge-discharge is 0.05C～0.3C.
6. the method improving the column lithium ion battery life-span as claimed in claim 1, it is characterised in that: described column lithium ion battery is any one in LiFePO4/graphite series, cobalt acid lithium/graphite series, LiMn2O4/graphite series, ternary material/graphite series battery.
7. the method improving the column lithium ion battery life-span as claimed in claim 6, it is characterised in that: the cycle charge-discharge voltage range of described LiFePO4/graphite series battery is 2.5V～3.4V；Or the cycle charge-discharge voltage range of cobalt acid lithium/graphite series, LiMn2O4/graphite series, ternary material/graphite series battery is 3.2V～4.1V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208188.8A CN105762417A (en) | 2016-04-05 | 2016-04-05 | Method for prolonging service life of cylindrical lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208188.8A CN105762417A (en) | 2016-04-05 | 2016-04-05 | Method for prolonging service life of cylindrical lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105762417A true CN105762417A (en) | 2016-07-13 |
Family
ID=56333595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610208188.8A Pending CN105762417A (en) | 2016-04-05 | 2016-04-05 | Method for prolonging service life of cylindrical lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105762417A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447460A (en) * | 2022-01-20 | 2022-05-06 | 江苏海基新能源股份有限公司 | Method for improving circulating climbing of lithium iron phosphate battery |
| CN114824531A (en) * | 2022-05-30 | 2022-07-29 | 重庆太蓝新能源有限公司 | Electrode infiltration method, lithium ion battery cell and lithium ion battery |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783424A (en) * | 2009-01-15 | 2010-07-21 | 深圳市比克电池有限公司 | Method for pre-charging lithium ion battery |
| CN102208685A (en) * | 2011-05-04 | 2011-10-05 | 恒正科技（苏州）有限公司 | Processing method for formation of lithium ion batteries |
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
| CN102324570A (en) * | 2011-09-07 | 2012-01-18 | 惠州Tcl金能电池有限公司 | Lithium ion battery, its formation method and preparation method |
| CN103117412A (en) * | 2013-01-31 | 2013-05-22 | 深圳市海太阳实业有限公司 | Lithium ion battery and formation method thereof |
| CN104316877A (en) * | 2014-01-09 | 2015-01-28 | 中航锂电（洛阳）有限公司 | Self-discharge detection method of lithium iron phosphate battery |
| CN104577202A (en) * | 2013-10-17 | 2015-04-29 | 奇瑞汽车股份有限公司 | Formation method and preparation method of high-voltage lithium ion battery as well as battery |
| CN104716387A (en) * | 2015-03-12 | 2015-06-17 | 惠州市豪鹏科技有限公司 | Formation method of soft package lithium ion battery |
-
2016
- 2016-04-05 CN CN201610208188.8A patent/CN105762417A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783424A (en) * | 2009-01-15 | 2010-07-21 | 深圳市比克电池有限公司 | Method for pre-charging lithium ion battery |
| CN102208685A (en) * | 2011-05-04 | 2011-10-05 | 恒正科技（苏州）有限公司 | Processing method for formation of lithium ion batteries |
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
| CN102324570A (en) * | 2011-09-07 | 2012-01-18 | 惠州Tcl金能电池有限公司 | Lithium ion battery, its formation method and preparation method |
| CN103117412A (en) * | 2013-01-31 | 2013-05-22 | 深圳市海太阳实业有限公司 | Lithium ion battery and formation method thereof |
| CN104577202A (en) * | 2013-10-17 | 2015-04-29 | 奇瑞汽车股份有限公司 | Formation method and preparation method of high-voltage lithium ion battery as well as battery |
| CN104316877A (en) * | 2014-01-09 | 2015-01-28 | 中航锂电（洛阳）有限公司 | Self-discharge detection method of lithium iron phosphate battery |
| CN104716387A (en) * | 2015-03-12 | 2015-06-17 | 惠州市豪鹏科技有限公司 | Formation method of soft package lithium ion battery |
Non-Patent Citations (1)
| Title |
|---|
| 马松艳等: "《二次电池的原理与制造技术》", 31 March 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447460A (en) * | 2022-01-20 | 2022-05-06 | 江苏海基新能源股份有限公司 | Method for improving circulating climbing of lithium iron phosphate battery |
| CN114824531A (en) * | 2022-05-30 | 2022-07-29 | 重庆太蓝新能源有限公司 | Electrode infiltration method, lithium ion battery cell and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101873329B1 (en) | Charging method for lithium ion batteries | |
| CN106908737B (en) | A kind of lithium ion battery life-span prediction method based on electrochemical reaction mechanism emulation | |
| CN102623680B (en) | Silicon-carbon composite cathode material with three-dimensional preformed hole structure and preparation method thereof | |
| CN106785052B (en) | Formation method of lithium titanate battery | |
| CN102185166B (en) | Battery forming and repairing method | |
| CN106847520B (en) | Lithium ion capacitor anode and application thereof | |
| CN102208685B (en) | Processing method for formation of lithium ion batteries | |
| CN103117412B (en) | Lithium ion battery and chemical synthesizing method thereof | |
| CN103855431B (en) | A kind of chemical synthesizing method improving cycle performance of lithium ion battery | |
| CN107681124A (en) | A kind of three-dimensional grapheme/MoS2The preparation method of composite | |
| CN104393290A (en) | Aluminum-ion battery using MoS2 as positive electrode material and preparation method of battery | |
| CN105048014B (en) | A kind of lithium-ion-power cell fast charge method with temperature-compensating | |
| CN107069022A (en) | A kind of chargeable ionic liquid Dual-ion cell and preparation method thereof | |
| CN109004288B (en) | Low-current disturbance circulation formation method near high SOC of lithium battery | |
| CN108493482A (en) | Lithium ion battery and its at change method | |
| CN105742695A (en) | Lithium-ion battery and preparation method thereof | |
| CN104681876A (en) | Formation method for improving comprehensive chemical property of lithium iron phosphate battery | |
| JP2020515207A (en) | Battery charging method and battery charging device | |
| CN105762417A (en) | Method for prolonging service life of cylindrical lithium-ion battery | |
| CN108511825B (en) | Formation method of ternary soft-packaged battery cell | |
| CN102646852A (en) | Lithium ion battery aging method | |
| CN112946506B (en) | Method for rapidly testing cycle life of lithium ion battery | |
| CN107247239A (en) | The determination method of high-temperature lithium ion battery ageing time | |
| CN106785139A (en) | A kind of method for lifting lithium battery circulation performance | |
| Leong et al. | Ultra fast charging system on lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |