CN107359375B - A kind of partial volume method of lithium ion battery - Google Patents
A kind of partial volume method of lithium ion battery Download PDFInfo
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- CN107359375B CN107359375B CN201710477636.9A CN201710477636A CN107359375B CN 107359375 B CN107359375 B CN 107359375B CN 201710477636 A CN201710477636 A CN 201710477636A CN 107359375 B CN107359375 B CN 107359375B
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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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
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
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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
The present invention relates to a kind of partial volume methods of lithium ion battery, belong to secondary cell manufacturing technology field.The partial volume method of lithium ion battery of the invention, comprising the following steps: will be filled with the lithium ion battery of electricity with the electric current of 0.3~1C and carry out constant-current discharge to the first discharge cut-off voltage, place；Then with the electric current constant-current discharge of 0.05~0.2C to the second discharge cut-off voltage；First discharge cut-off voltage is 2.0~2.7V, and second discharge cut-off voltage is identical with first discharge cut-off voltage.Partial volume method of the invention can realize the quick partial volume to lithium ion battery, partial volume is high-efficient, the small advantage of environmental Kuznets Curves energy consumption, and it can reduce temperature influence, keep partial volume capacity more acurrate, the groups of consistency of lithium ion battery is improved, is a kind of efficient partial volume method suitable for producing lithium ion battery in batches.
Description
Technical field
The present invention relates to a kind of partial volume methods of lithium ion battery, belong to secondary cell manufacturing technology field.
Background technique
Global new-energy automobile industry will be presented under the technology overall background that constantly maturation, Government supports policy are constantly landed
The trend of quick industrialization out, in addition, the industries such as electric tool, electric bicycle, new energy also will be in the background of low-carbon economy
It is lower to keep the fast-developing impetus.
Lithium-ion battery monomer voltage is generally 3.0V~4.2V, and monomer capacity is limited, when being used for electric automobiles,
Several hundred even more batteries are generallyd use to use in groups according to certain mode series and parallel.For by multiple monomer lithiums from
For the energy-storage system of sub- battery composition, output energy, output power and the service life of whole system are depended in system
One piece of worst battery of performance, therefore the inconsistency of single battery is the most critical factor for influencing whole system performance and playing.
The Capacity uniformity of monomer lithium ion battery is one of the important behaviour of battery system consistency.
Due to complex process in lithium ion battery production process, and performance is affected by the external environment also larger, same batch
Battery, specific capacity also can be different, determine the capacity of monomer lithium ion in actual production using the method for partial volume.Lithium from
Sub- battery is in grouping procedure, and capacity is top-priority combo parameter, and the consistency of rear mold block in groups, and uses the longevity
Whether life, discharging efficiency etc., the capacity dependent on monomer lithium ion can accurately obtain.
For the lithium ion battery (such as ferric phosphate lithium cell) that capacity is affected by temperature change, environment temperature is got over
High battery capacity is higher, and with the continuous raising of temperature, battery capacity growth is smaller, until tending towards stability；Environment temperature is lower
Battery capacity decaying is faster, and with the continuous reduction of temperature, the rate of battery capacity decaying is faster.Existing partial volume technique is universal
It is required that environment temperature is 25 DEG C ± 2 DEG C, environmental Kuznets Curves difficulty is big, at high cost, and be easy to appear the temperature difference causes capacity to be distorted greatly
The case where.Application publication number is that the application for a patent for invention of CN106207284A discloses a kind of promotion ferric phosphate lithium cell partial volume appearance
The method for measuring consistency, this method extract battery and carry out partial volume under different temperatures node, choose very poor the smallest battery partial volume
Section carries out curve fitting the capacity of battery each under the temperature range and the capability value of battery at 25 DEG C, according to fit equation
Discharge capacity of the battery at 25 DEG C is calculated, influence of the temperature to battery capacity consistency is reduced, although this method is warm to reducing
Degree influences the state that aspect has certain effect, but environment temperature is needed to keep constant, and temperature is dynamic change in actual production
, there can not be certain fluctuation steadily in the long term at the same temperature, the battery of batch production can not be measured accurately in this way
Capacity.
Summary of the invention
The object of the present invention is to provide a kind of partial volume methods of lithium ion battery, are able to solve existing partial volume method by temperature
Degree influences big, the problem of the capacity inaccuracy of the lithium ion battery of acquisition.
In order to achieve the goal above, the technical scheme adopted by the invention is that:
A kind of partial volume method of lithium ion battery, comprising the following steps: will be filled with the lithium ion battery of electricity with 0.3~1C's
Electric current carries out constant-current discharge to the first discharge cut-off voltage, places；Then with the electric current constant-current discharge of 0.05~0.2C to second
Discharge cut-off voltage；First discharge cut-off voltage is 2.0~2.7V, and second discharge cut-off voltage is put with described first
Electric blanking voltage is identical.
The discharge capacity of first time constant-current discharge is added with the discharge capacity of second of constant-current discharge, can be used as lithium from
The partial volume capacity of sub- battery.
The time of the placement is 1~10min.
Constant-current discharge carries out under conditions of 20~40 DEG C.
The partial volume method of above-mentioned lithium ion battery further includes the step for being charged to full electricity to lithium ion battery before constant-current discharge
Rapid: the step includes following three phases: first stage, by lithium ion battery with the electric current constant-current charge of 0.25~1C to first
Charge cutoff voltage is placed；Second stage cuts lithium ion battery with the electric current constant-current charge of 0.1~0.2C to the second charging
Only voltage is placed；Phase III, by lithium ion battery with the electric current constant-current charge of 0.01~0.05C to third charge cutoff electricity
Pressure；First charge cutoff voltage is 3.6~4.3V, second charge cutoff voltage and first charge cutoff voltage
Identical, the third charge cutoff voltage is identical as first charge cutoff voltage.
The partial volume method of above-mentioned lithium ion battery further includes the step for being charged to full electricity to lithium ion battery before constant-current discharge
Rapid: the step includes following three phases: first stage, by lithium ion battery with 1~4h of electric current constant-current charge of 0.25~1C；
Second stage is placed by lithium ion battery with the electric current constant-current charge of 0.1~0.2C to the 4th charge cutoff voltage；Third rank
Section, by lithium ion battery with the electric current constant-current charge of 0.01~0.05C to the 5th charge cutoff voltage；4th charge cutoff
Voltage is 3.6~4.3V, and the 5th charge cutoff voltage is identical as the 4th charge cutoff voltage.
Constant-current charge carries out under conditions of 20~40 DEG C.
Lithium ion battery is charged in the first stage and second stage of the step of full electricity, the time of the placement is 1
~10min.
After being charged to full electricity to lithium ion battery using the above method, after battery is placed, constant-current discharge is then carried out again.It is excellent
Choosing, the time that battery is placed is 1~10min.
Different discharge currents is also very big to the capacity impact of battery, and electric current is bigger, and capacity is smaller, and electric current is smaller, capacity
It is higher.The partial volume method of lithium ion battery of the invention increases the step of low discharging current on the basis of existing partial volume technique
Suddenly, the capacity of battery is improved, influence of the temperature to discharge capacity of the cell is reduced；And temperature when not needing constantly to detect partial volume
Degree reaches unanimity in temperature 20 DEG C~40 DEG C range content amounts holding, and the temperature is convenient for control, reduce environmental Kuznets Curves at
This.
Using the partial volume method of lithium ion battery of the invention, the quick of the lithium ion battery of 72Ah is can be realized in 4h~6h
Partial volume improves the capacity of battery, in groups after the discharging efficiency of module get a promotion, and the electric discharge end pressure after reducing in groups
Difference improves groups of consistency, improves product quality, extend the service life of module；The partial volume method, which has, divides
The appearance time is short, and partial volume is high-efficient, the small advantage of environmental Kuznets Curves energy consumption, and can reduce temperature influence, and gained partial volume capacity is more quasi-
It really, is a kind of efficient partial volume method suitable for producing lithium ion battery in batches.
Specific embodiment
Below in conjunction with specific embodiment, further description of the technical solution of the present invention.
The ferric phosphate lithium cell of the same a collection of same size of the lithium ion battery selection of the Examples 1 to 7 of specific embodiment,
Be placed in have temperature control, partial volume charging/discharging function integration apparatus in carry out partial volume.
The lithium ion battery selection of embodiment 7~9 is carried out with the NCM ternary lithium ion battery of the 48Ah of a collection of same size
Partial volume.
Embodiment 1
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 20 DEG C:
First stage places 5min by lithium ion battery with the electric current constant-current charge of 0.5C to 3.65V；
Second stage places 5min by lithium ion battery with the electric current constant-current charge of 0.1C to 3.65V；
Phase III, by lithium ion battery with the electric current constant-current charge of 0.05C to 3.65V；
2) lithium ion battery that will be filled with electricity discharges at 20 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.5V with the electric current of 0.5C, record discharge capacity C1, put
Set 10min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.1C to 2.5V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 2
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 25 DEG C:
First stage places 1min by lithium ion battery with the electric current constant-current charge 1h of 1C；
Second stage places 1min by lithium ion battery with the electric current constant-current charge of 0.1C to 3.65V；
Phase III stands 10min by lithium ion battery with the electric current constant-current charge of 0.05C to 3.65V；
2) lithium ion battery that will be filled with electricity discharges at 25 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.5V with the electric current of 1C, record discharge capacity C1, place
5min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.1C to 2.5V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 3
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 30 DEG C:
First stage places 10min by lithium ion battery with the electric current constant-current charge of 0.5C to 3.65V；
Second stage places 10min by lithium ion battery with the electric current constant-current charge of 0.1C to 3.65V；
Phase III stands 1min by lithium ion battery with the electric current constant-current charge of 0.05C to 3.65V；
2) lithium ion battery that will be filled with electricity discharges at 30 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.5V with the electric current of 0.5C, record discharge capacity C1, put
Set 1min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.05C to 2.5V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 4
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 40 DEG C:
First stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.3C to 3.65V；
Second stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.2C to 3.65V；
Phase III stands 10min by lithium ion battery with the electric current constant-current charge of 0.01C to 3.65V；
2) lithium ion battery that will be filled with electricity discharges at 40 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.5V with the electric current of 0.3C, record discharge capacity C1, put
Set 5min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.2C to 2.5V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 5
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 35 DEG C:
First stage stands 10min by lithium ion battery with the electric current constant-current charge 1h of 1C；
Second stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.13C to 3.6V；
Phase III stands 10min by lithium ion battery with the electric current constant-current charge of 0.02C to 3.6V；
2) lithium ion battery that will be filled with electricity discharges at 35 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.0V with the electric current of 0.6C, record discharge capacity C1, put
Set 8min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.13C to 2.0V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 6
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 20 DEG C:
First stage stands 1min by lithium ion battery with the electric current constant-current charge 4h of 0.25C；
Second stage stands 1min by lithium ion battery with the electric current constant-current charge of 0.16C to 3.7V；
Phase III stands 1min by lithium ion battery with the electric current constant-current charge of 0.04C to 3.7V；
2) lithium ion battery that will be filled with electricity discharges at 20 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.7V with the electric current of 0.8C, record discharge capacity C11, put
Set 4min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.16C to 2.7V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 7
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 30 DEG C:
First stage stands 5min by lithium ion battery with the electric current constant-current charge 4h of 0.25C；
Second stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.15C to 4.3V；
Phase III stands 1min by lithium ion battery with the electric current constant-current charge of 0.03C to 4.3V；
2) lithium ion battery that will be filled with electricity discharges at 20 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.5V with the electric current of 1.0C, record discharge capacity C1, put
Set 5min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.05C to 2.5V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 8
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 20 DEG C:
First stage stands 10min by lithium ion battery with the electric current constant-current charge 4.3V of 1C；
Second stage stands 5min by lithium ion battery with the electric current constant-current charge of 0.2C to 4.3V；
Phase III stands 1min by lithium ion battery with the electric current constant-current charge of 0.01C to 4.3V；
2) lithium ion battery that will be filled with electricity discharges at 20 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.0V with the electric current of 0.3C, record discharge capacity C1, put
Set 6min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.2C to 2.0V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Embodiment 9
The partial volume method of the lithium ion battery of the present embodiment, comprising the following steps:
1) divide three phases that lithium ion battery is charged to full electricity at 40 DEG C:
First stage stands 10min by lithium ion battery with the electric current constant-current charge 4h of 0.25C；
Second stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.1C to 4.3V；
Phase III stands 1min by lithium ion battery with the electric current constant-current charge of 0.05C to 4.3V；
2) lithium ion battery that will be filled with electricity discharges at 40 DEG C:
It will be filled with the lithium ion battery of electricity and constant-current discharge carried out to 2.7V with the electric current of 1.0C, record discharge capacity C1, put
Set 3min；
Then discharge capacity C is recorded with the electric current constant-current discharge of 0.05C to 2.7V again2；
3) the partial volume capacity of lithium ion battery is calculated:
The discharge capacity discharged twice is added, the partial volume capacity C for the lithium ion battery that can be obtained: C=C1+C2。
Comparative example 1
The ferric phosphate lithium cell of the lithium ion battery selection of comparative example 1 and the same a collection of same size of Examples 1 to 6.
The partial volume method of the lithium ion battery of comparative example 1, comprising the following steps:
1) lithium ion battery is charged to full electricity in two stages:
First stage stands 5min by lithium ion battery with the electric current constant-current charge of 0.5C to 3.65V；
Lithium ion battery with voltage constant-voltage charge to the electric current of 3.65V is 0.05C by second stage, stands 5min；
2) lithium ion battery that will be filled with electricity discharges: will be filled with the lithium ion battery of electricity with the electric current of 0.5C and carries out perseverance
Stream is discharged to 2.5V, records discharge capacity C.
Comparative example 2
The lithium ion battery selection of comparative example 2 and embodiment 7~9 with the 48Ah of a collection of same size NCM ternary lithium from
Sub- battery.
The partial volume method of the lithium ion battery of comparative example 2, comprising the following steps:
1) lithium ion battery is charged to full electricity in two stages:
First stage stands 10min by lithium ion battery with the electric current constant-current charge of 0.5C to 4.3V；
Lithium ion battery with voltage constant-voltage charge to the electric current of 3.6V is 0.05C by second stage, stands 1min；
2) lithium ion battery that will be filled with electricity discharges: will be filled with the lithium ion battery of electricity with the electric current of 0.5C and carries out perseverance
Stream is discharged to 2.5V, records discharge capacity C.
Experimental example
Module is charged to certain voltage, the virtual voltage of every battery in difference test module, wherein maximum and minimum
Value difference be charge end pressure difference；By module discharge to certain voltage, the practical electricity of every battery in test module is distinguished
Pressure, wherein the maximum difference with the smallest value is the end pressure difference that discharges；Charge and discharge end pressure difference is smaller, shows that modular battery is consistent
Property is good；Discharging efficiency, which refers to, discharges to module, the discharge capacity of module and the ratio of charging capacity, as discharging efficiency,
Discharging efficiency is higher, shows that consistency is good in groups in battery.
Respectively by the ferric phosphate lithium cell after the partial volume method partial volume for using Examples 1 to 6 and comparative example 1 according to a group internal difference
1Ah is sorted, and 2P203S module is integrated into, and detects each end of module pressure difference and discharging efficiency, testing result are shown in Table 1.
Respectively by using the NCM ternary lithium ion battery after the partial volume method partial volume of embodiment 7~9 and comparative example 2 according to
Group internal difference 1Ah is sorted, and is integrated into 2P203S module, is detected each end of module pressure difference and discharging efficiency, testing result are shown in Table
2。
The test comparison of the end of module pressure difference and discharging efficiency of 1 Examples 1 to 6 of table and comparative example 1
The test comparison of the end of module pressure difference and discharging efficiency of 2 embodiment 7~9 of table and comparative example 2
According to the test result of each embodiment and comparative example it is found that the partial volume method of lithium ion battery provided by the invention,
Battery capacity is high, and battery group consistency is good, in groups after discharging efficiency it is high, be affected by temperature small, ring control is at low cost, is conducive to look forward to
Industry improves production efficiency and product quality.
Claims (5)
1. a kind of partial volume method of lithium ion battery, it is characterised in that: the following steps are included: will be filled with electricity lithium ion battery with
The electric current of 0.3 ~ 1C carries out constant-current discharge to the first discharge cut-off voltage, places；Then with the electric current constant-current discharge of 0.05 ~ 0.2C
To the second discharge cut-off voltage；First discharge cut-off voltage is 2.0 ~ 2.7V, second discharge cut-off voltage and first
Discharge cut-off voltage is identical；
The partial volume method of the lithium ion battery include thes steps that being charged to full electricity to lithium ion battery before constant-current discharge: should
Step includes following three phases: first stage, and lithium ion battery is cut with the electric current constant-current charge of 0.25 ~ 1C to the first charging
Only voltage is placed；Second stage, by lithium ion battery with the electric current constant-current charge of 0.1 ~ 0.2C to the second charge cutoff voltage,
It places；Phase III, by lithium ion battery with the electric current constant-current charge of 0.01 ~ 0.05C to third charge cutoff voltage；Described
One charge cutoff voltage is 3.6 ~ 4.3V, and second charge cutoff voltage is identical as first charge cutoff voltage, described
Third charge cutoff voltage is identical as first charge cutoff voltage；
Or include the steps that being charged to full electricity to lithium ion battery before constant-current discharge: the step includes following three ranks
Section: the first stage places by lithium ion battery with electric current 1 ~ 4h of constant-current charge of 0.25 ~ 1C；Second stage, by lithium-ion electric
It is placed with the electric current constant-current charge of 0.1 ~ 0.2C to the 4th charge cutoff voltage in pond；Phase III, by lithium ion battery with 0.01
The electric current constant-current charge of ~ 0.05C is to the 5th charge cutoff voltage；4th charge cutoff voltage is 3.6 ~ 4.3V, described the
Five charge cutoff voltages are identical as the 4th charge cutoff voltage.
2. the partial volume method of lithium ion battery according to claim 1, it is characterised in that: the time of the placement be 1 ~
10min。
3. the partial volume method of lithium ion battery according to claim 1, it is characterised in that: the constant-current discharge 20 ~
It is carried out under conditions of 40 DEG C.
4. the partial volume method of lithium ion battery according to claim 1, it is characterised in that: the constant-current charge 20 ~
It is carried out under conditions of 40 DEG C.
5. the partial volume method of lithium ion battery according to claim 1, it is characterised in that: be charged to full electricity to lithium ion battery
The step of first stage and second stage in, the time of the placement is 1 ~ 10min.
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| CN110687469B (en) * | 2019-10-14 | 2022-05-10 | 洛阳储变电系统有限公司 | Lithium ion battery constant volume method |
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| CN113258153A (en) * | 2021-05-11 | 2021-08-13 | 东华理工大学 | Quick capacity grading method for quick-charging lithium ion battery |
| CN113325320B (en) * | 2021-05-28 | 2023-09-01 | 江西安驰新能源科技有限公司 | Capacity-dividing test method for eliminating climbing of lithium battery capacity |
| CN113675490A (en) * | 2021-08-19 | 2021-11-19 | 蜂巢能源科技有限公司 | Battery capacity grading method and device |
| CN113506923B (en) * | 2021-09-09 | 2022-02-18 | 蜂巢能源科技有限公司 | Method for regulating charge of lithium iron phosphate lithium ion battery |
| CN114497691A (en) * | 2021-12-16 | 2022-05-13 | 惠州亿纬锂能股份有限公司 | Lithium ion battery capacity grading optimization method |
| CN114267893A (en) * | 2021-12-21 | 2022-04-01 | 欣旺达电动汽车电池有限公司 | Capacity grading activation method for lithium ion battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212066A (en) * | 2006-12-28 | 2008-07-02 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| CN103515653A (en) * | 2012-06-28 | 2014-01-15 | 深圳市海盈科技有限公司 | Formation method of soft-packed lithium ion battery |
| CN104037464A (en) * | 2014-06-19 | 2014-09-10 | 合肥国轩高科动力能源股份公司 | Formation method of lithium ion battery |
| CN104218267A (en) * | 2014-07-30 | 2014-12-17 | 浙江超威创元实业有限公司 | Capacity-grading and set-matching method of lithium ion 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 |
| CN104485489A (en) * | 2015-01-09 | 2015-04-01 | 中航锂电（洛阳）有限公司 | Method for improving uniformity of utilizing battery packs in cascaded mode |
| CN106450471A (en) * | 2016-10-14 | 2017-02-22 | 四川赛尔雷新能源科技有限公司 | Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp |
-
2017
- 2017-06-20 CN CN201710477636.9A patent/CN107359375B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212066A (en) * | 2006-12-28 | 2008-07-02 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| CN103515653A (en) * | 2012-06-28 | 2014-01-15 | 深圳市海盈科技有限公司 | Formation method of soft-packed lithium ion 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 |
| CN104037464A (en) * | 2014-06-19 | 2014-09-10 | 合肥国轩高科动力能源股份公司 | Formation method of lithium ion battery |
| CN104218267A (en) * | 2014-07-30 | 2014-12-17 | 浙江超威创元实业有限公司 | Capacity-grading and set-matching method of lithium ion battery |
| CN104485489A (en) * | 2015-01-09 | 2015-04-01 | 中航锂电（洛阳）有限公司 | Method for improving uniformity of utilizing battery packs in cascaded mode |
| CN106450471A (en) * | 2016-10-14 | 2017-02-22 | 四川赛尔雷新能源科技有限公司 | Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp |
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|---|---|
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