CN103022570A - Method for optimizing non-water electrolyte secondary battery - Google Patents
Method for optimizing non-water electrolyte secondary battery Download PDFInfo
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- CN103022570A CN103022570A CN2012105871211A CN201210587121A CN103022570A CN 103022570 A CN103022570 A CN 103022570A CN 2012105871211 A CN2012105871211 A CN 2012105871211A CN 201210587121 A CN201210587121 A CN 201210587121A CN 103022570 A CN103022570 A CN 103022570A
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- 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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Abstract
The invention discloses a method for optimizing a non-water electrolyte secondary battery. When the battery is subjected to exhaust formation or aftertreatment, a normal temperature aging mode is adopted for treatment in a recharge mechanism that a small current is combined with a large current under a certain temperature condition, and the method comprises the following steps of: charging the battery by the small current of 0.05-0.1C till that 80% of the standard electric quantity of the battery is charged under the temperature condition of 45-90 DEG C, and keeping the constant voltage for 1-5 hours and subsequently exhausting gas; continuously charging the battery subjected to the gas exhaust by current of 0.2C till that the battery is fully charged, cutting off the current of 0.02C under the constant voltage condition, laying aside for 5-10 hours under the constant voltage condition and subsequently exhausting the gas; and storing for two days in normal temperature and carrying out aftertreatment gas exhaust. According to the battery optimizing method provided by the invention, by optimizing the charge, discharge and storage process of the battery, the battery performance deterioration caused by produced gas expansion of the battery is greatly reduced or suppressed, the situation that the expansion rate is as high as 40% after 10-time battery circulation is changed to the situation that the battery expansion rate is not more than 15% after 1000-time circulation, and the expansion rate is not more than 10% after the 1000-time circulation under an optimal condition, so that various electrochemical performances of the battery are greatly improved.
Description
Technical field
The present invention relates to a kind of battery optimization method, be specifically related to a kind of optimization method of the nonaqueous electrolytic solution secondary battery take spinel type lithium titanate as main negative electrode active material.
Background technology
In recent years, the spinel type lithium titanate negative material comes into one's own day by day, this is because in charge and discharge process, the cell parameter that lithium titanate material in the process is taken off in the lithium ion embedding changes very little, be called as zero strain (zero-strain) electrode material, have good stability and excellent cycle performance.Voltage platform is high, has avoided forming passivating film and overcharging or the formation of electrode surface Li dendrite during large current charge with electrolyte reaction, and it is safe, and the serviceability temperature wide ranges, can use under-40-+80 ℃ condition; And its lithium ion diffusion coefficient is higher than common carbon negative pole material, its operating voltage is near 2.5V when forming battery with Li4Ti5O12 and 4V positive electrode, 2 times of common Ni-MH battery, and has fast charging and discharging, the cycle life of overlength and the higher characteristics such as fail safe, mainly be applied at present the fields such as automatic guided vehicle, fork truck, electric bicycle, electric motorcycle, hybrid vehicle, in the energy storage field good application prospect being arranged also, also is a kind of super capacitor anode material that has prospect in addition.Simultaneously, along with further developing and the application of Nano Scale Electronics Technology in the IC device of microelectric technique, with the raising of IC device integrated level, its operating voltage also will reduce, therefore the development of A-battery also will be a kind of trend.
Current lithium titanate material Main Problems is: electronic conductivity is low, aerogenesis problem and Cost Problems, wherein especially severe with the aerogenesis problem, if do not do any optimization, battery the circulation 10 times after bulging up to more than 45%, have a strong impact on lithium titanate material square, the popularization on the batteries such as flexible package and its application.
The Suzhou star is permanent in to one or more the mixture among lithium titanate surface coating layer insulation oxide, insulated compound oxide, aluminum phosphate, magnesium phosphate, lithium fluoride, lithium phosphate or the LiMPO4, by changing lithium titanate surface of active material physics and chemistry characteristic, avoid to a certain extent the generation of ballooning, guarantee that simultaneously the capacity of battery and cyclicity do not reduce.
In addition, there are some researches show, coat nitrogen on the LTO surface, doping carbon has significantly reduced the chemism on LTO surface and made very strong combination between the electrode/electrolyte interface; Nitrogen doped graphite coating further improves interface stability and conductivity, can significantly improve high rate performance and cycle performance, and can improve the bulging problem of battery.
But because material surface exists a certain amount of lithium carbonate, MOH(Li-OH, Ti-OH etc.) and the lewis acid position etc., electric liquid had catalyticing decomposition action, and the surface is large, also easily adsorbed water and other impurity, so battery easily produces gas and causes battery bulging and hydraulic performance decline in charging and discharging process.
Summary of the invention
The object of the present invention is to provide a kind of optimization method of nonaqueous electrolytic solution secondary battery, be intended to reduce or suppress the aerogenesis bulging of battery by optimizing battery, improve the electrical property of battery.
For achieving the above object, the present invention adopts following technical scheme:
A kind of optimization method of nonaqueous electrolytic solution secondary battery is carrying out to battery that exhaust changes into or during reprocessing, is adopting little electric current in conjunction with the charging standard of large electric current under the uniform temperature condition, and the normal temperature aging techniques is processed, and its concrete grammar is as follows:
Under 45 ~ 90 ℃ of temperature conditions, to battery with the 0.05-0.1C low current charge to 80% of battery standard electric weight, and constant voltage 1-5 hour final vacuum; Under this temperature conditions, the battery that drains gas is continued to charge to full electricity with the 0.2C electric current, under the constant-pressure conditions behind the cut-off current 0.02C constant voltage shelve final vacuum in 5-10 hour; Normal temperature storage is carried out the reprocessing exhaust two days later.
Preferably, described temperature conditions is 75 ~ 90 ℃, and constant voltage was shelved this 8-10 of time hour behind the full electricity, and described low current charge is the 0.08-0.1C current charges.
The condition of described reprocessing exhaust is that battery charges to full electricity, and the 1C electric current charges and discharge under the constant-pressure conditions, and cut-off current 0.02C is discharged to 1.5V.
Battery optimization method of the present invention is by optimizing discharging and recharging and storage process of battery, greatly reduce or suppressed battery because the battery performance that the aerogenesis bulging causes worsens, 10 bulging rates of circulating battery are circulated 1000 times up to being improved to more than 40%, battery bulging rate is no more than 15%, 1000 circulation bulging rates are no more than 10% after the condition optimization, have greatly improved the various chemical properties of product.
Description of drawings
Fig. 1 is circulating battery and the varied in thickness curve of comparative example 1 and embodiment 2 and embodiment 5;
The circulating battery of Fig. 2 embodiment 10 and embodiment 12 and varied in thickness curve.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is further elaborated.
The present invention realizes like this, a kind of optimization method of nonaqueous electrolytic solution secondary battery, battery is being carried out exhaust changes into or during reprocessing, under the uniform temperature condition, adopt little electric current in conjunction with the charging standard of large electric current, the normal temperature aging techniques is processed, and its concrete grammar is, under 45 ~ 90 ℃ of temperature conditions, to battery with the 0.05-0.1C low current charge to 80% of battery standard electric weight, and constant voltage 1-5 hour final vacuum; Under this temperature conditions the battery that drains gas is continued to charge to full electricity with the 0.2C electric current, under the constant-pressure conditions, constant voltage is shelved final vacuum in 5-10 hour behind the cut-off current 0.02C; Normal temperature storage is carried out the reprocessing exhaust two days later.
Preferably, described temperature conditions is 75 ~ 90 ℃, and constant voltage was shelved this 8-10 of time hour behind the full electricity, and described low current charge is the 0.08-0.1C current charges.
The condition of described reprocessing exhaust is that battery charges to full electricity, and the 1C electric current charges and discharge under the constant-pressure conditions, and cut-off current 0.02C is discharged to 1.5V.
Below, in conjunction with specific embodiments superiority of the present invention is described in detail.
Selecting model is that 054665 same a collection of flexible-packed battery is tested 10 batteries of every example; The positive active material LiMn2O4 of this flexible-packed battery, the negative electrode active material lithium titanate, barrier film adopts Celgard2320, and electrolyte is fit to the lithium titanate battery system.
The test condition of battery: under the different temperatures, 0.05-0.1C charges to 2.4V, and constant voltage is shelved the certain hour final vacuum; Again under this temperature conditions with the 0.2C current charges to 3V, behind the cut-off current 0.02C, constant voltage is shelved the 5-10h final vacuum again under the constant-pressure conditions; Normal temperature storage is carried out the reprocessing exhaust two days later again.
Post-treatment condition: the 1C electric current charges and discharge, and 1.5 ~ 3V(namely charges to 3V, and cut-off current 0.02C is discharged to 1.5V under the constant-pressure conditions.In the embodiment of the invention, change into carrying out battery, store and last handling process in all use clamping plate, be out of shape to prevent the battery pole group.
Loop test adopts Arbin equipment.The loop test condition: the 5C electric current charges and discharge, and 1.5 ~ 3V(namely charges to 3V, and cut-off current 0.06C is discharged to 1.5V under the constant-pressure conditions.
Comparative example 1
Battery 0.2C under normal temperature condition changes into to full electricity, and current cut-off 0.02C stores two days later exhaust, and then battery is carried out normal temperature reprocessing exhaust, record thickness.Battery sees Table one with bulging data after the 5C circulation 10 times.
Comparative example 2
Battery charges to 2.4V with 0.05C under normal temperature condition, then constant voltage final vacuum in 5 hours charges under the full electric condition, and constant voltage is shelved exhaust in 5 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 110 times.
Embodiment 1
Battery charges to 2.4V with 0.05C under 45 ℃ of conditions, then constant voltage 5 hours charges under the full electric condition, and constant voltage is shelved exhaust in 5 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 2
Battery charges to 2.4V with 0.05C under 45 ℃ of conditions, then constant voltage 5 hours charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 3
Battery charges to 2.4V with 0.05C under 45 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 4
Battery charges to 2.4V with 0.08C under 45 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 5
Battery charges to 2.4V with 0.1C under 45 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 6
Battery charges to 2.4V with 0.1C under 60 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 7
Battery charges to 2.4V with 0.1C under 60 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 8 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Battery charges to 2.4V with 0.1C under 75 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 8 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Battery charges to 2.4V with 0.05C under 80 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 8 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Battery charges to 2.4V with 0.08C under 80 ℃ of conditions, constant voltage 1 hour, and then under the full electric condition of charging, constant voltage is shelved exhaust in 8 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1200 times.
Embodiment 11
Battery charges to 2.4V with 0.1C under 80 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 10 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1000 times.
Embodiment 12
Battery charges to 2.4V with 0.08C under 90 ℃ of conditions, then constant voltage 1 hour charges under the full electric condition, and constant voltage is shelved exhaust in 8 hours behind the current cut-off 0.02C, and normal temperature storage is processed again exhaust two days later, record thickness.Battery sees Table one with bulging data after the 5C circulation 1200 times.
As can be seen from Table 1, adopt the little pre-charge galvanic process of the present invention and directly charge to full electricity and compare, bulging has clearly improvement, changes in advance under hot conditions and expires under the electric condition of storage, and temperature is higher, and the time is longer, and after exhaust, battery bulging degree is less.Especially the preferred 0.08-0.1C current charges of low current charge, preferred 75 ~ 90 ℃ of conditions of temperature were shelved 8-10 hour behind the full electricity, and effect is very obvious, circulating, battery bulging rate is no more than 15% after 1000 times, and 1000 bulging of circulation are no more than 10% substantially after the condition optimization.
Table one
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the optimization method of a nonaqueous electrolytic solution secondary battery, it is characterized in that, battery is being carried out exhaust changes into or during reprocessing, under the uniform temperature condition, adopting little electric current in conjunction with the charging standard of large electric current, the normal temperature aging techniques is processed, and its concrete grammar is as follows:
Under 45 ~ 90 ℃ of temperature conditions, to battery with the 0.05-0.1C low current charge to 80% of battery standard electric weight, and constant voltage 1-5 hour final vacuum; Under this temperature conditions, the battery that drains gas is continued to charge to full electricity with the 0.2C electric current, under the constant-pressure conditions behind the cut-off current 0.02C constant voltage shelve final vacuum in 5-10 hour; Normal temperature storage is carried out the reprocessing exhaust two days later.
2. the optimization method of nonaqueous electrolytic solution secondary battery according to claim 1 is characterized in that, described temperature conditions is 75 ~ 90 ℃, and constant voltage was shelved this 8-10 of time hour behind the full electricity, and described low current charge is the 0.08-0.1C current charges.
3. the optimization method of nonaqueous electrolytic solution secondary battery according to claim 2 is characterized in that, the condition of described reprocessing exhaust is that battery charges to full electricity, and the 1C electric current charges and discharge under the constant-pressure conditions, and cut-off current 0.02C is discharged to 1.5V.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252760A (en) * | 2016-08-05 | 2016-12-21 | 四川剑兴锂电池有限公司 | A kind of chemical conversion floating charge method of lithium titanate anode lithium battery |
| CN107910594A (en) * | 2017-11-20 | 2018-04-13 | 江苏双登富朗特新能源有限公司 | The method for improving flexible packing lithium ion battery formation effect |
| CN109449492A (en) * | 2018-11-01 | 2019-03-08 | 中南大学 | A kind of ceramic base all-solid-state battery and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335364A (en) * | 2007-06-28 | 2008-12-31 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| 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 |
| CN102646813A (en) * | 2012-03-28 | 2012-08-22 | 重庆永通信息工程实业有限公司 | Manufacturing method of lithium titanate lithium ion battery |
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- 2012-12-28 CN CN2012105871211A patent/CN103022570A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335364A (en) * | 2007-06-28 | 2008-12-31 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| 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 |
| CN102646813A (en) * | 2012-03-28 | 2012-08-22 | 重庆永通信息工程实业有限公司 | Manufacturing method of lithium titanate lithium ion battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252760A (en) * | 2016-08-05 | 2016-12-21 | 四川剑兴锂电池有限公司 | A kind of chemical conversion floating charge method of lithium titanate anode lithium battery |
| CN106252760B (en) * | 2016-08-05 | 2018-12-18 | 四川剑兴锂电池有限公司 | A kind of chemical conversion floating charge method of lithium titanate anode lithium battery |
| CN107910594A (en) * | 2017-11-20 | 2018-04-13 | 江苏双登富朗特新能源有限公司 | The method for improving flexible packing lithium ion battery formation effect |
| CN109449492A (en) * | 2018-11-01 | 2019-03-08 | 中南大学 | A kind of ceramic base all-solid-state battery and preparation method thereof |
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Application publication date: 20130403 |