CN108336434A - The charged partial volume processing method of lithium ion battery and its lithium ion battery obtained - Google Patents
The charged partial volume processing method of lithium ion battery and its lithium ion battery obtained Download PDFInfo
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- CN108336434A CN108336434A CN201810170787.4A CN201810170787A CN108336434A CN 108336434 A CN108336434 A CN 108336434A CN 201810170787 A CN201810170787 A CN 201810170787A CN 108336434 A CN108336434 A CN 108336434A
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- partial volume
- current
- lithium ion
- ion battery
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
Abstract
The present invention provides a kind of charged partial volume processing method of lithium ion battery and its lithium ion batteries obtained, are related to energy-storage battery technical field.Lithium ion battery after chemical conversion treatment low current and high current alternating charge and discharge electric treatment are predominantly carried out charged partial volume by the above-mentioned charged partial volume processing method of lithium ion battery, the charged partial volume processing method has the advantage that with short production cycle, capacity utilization is high, energy consumption is low, while can also obviously increase the storing up electricity capacity of battery, extend the service life of battery.The charged partial volume processing method can be widely used in the charged partial volume processing of lithium ion battery.
Description
Technical field
The present invention relates to energy-storage battery technical field, more particularly, to a kind of charged partial volume processing method of lithium ion battery and
Its lithium ion battery obtained.
Background technology
The production process of lithium ion battery includes closing slurry, coating, roll-in, slice, lamination (winding), assembling, fluid injection and change
At etc. processes, wherein charged partial volume be determine lithium battery performance a critically important link.
Influence of the charged partial volume process to lithium battery mainly has：1, influence negative plate SEI films holding and its stability,
Persistence, and then influence the cycle performance of lithium battery；2, influence lithium battery capacity；3, incorrect charged partial volume technique, meeting
Cathode of lithium battery analysis lithium is directly resulted in, is formed " Li dendrite ", can thus be seriously threatened the security performance of lithium battery, can cause
Lithium battery interior short circuit is even exploded.Therefore, charged partial volume technique plays the role of the performance of lithium battery vital.
Traditional charged partial volume technique is generally：After the completion of battery post-processing, constant temperature is shelved 3~5 days, then with the electricity of 1C
Stream carries out electricizing activation repeatedly to battery.The charged process of tradition is generally time-consuming longer, but capacity is played and is not thorough, if capacity is sent out
Wave not exclusively, can carry out repeatedly it is again charged, result in this way equipment investment is big, the production cycle is long, equipment service efficiency is low, consumption
The problems such as electricity is big seriously affects the production efficiency of lithium battery.
Therefore, research and develop it is a kind of have that with short production cycle, capacity utilization is high, the low advantage of energy consumption, while may be used also
To obviously increase the charged processing method of lithium ion battery of the storing up electricity capacity of battery, the service life for extending battery, become very
It is necessary and urgent.
In view of this, special propose the present invention.
Invention content
The first object of the present invention is to provide a kind of charged partial volume processing method of lithium ion battery, at the charged partial volume
Reason method has the advantage that with short production cycle, capacity utilization is high, energy consumption is low, while the storing up electricity that can also obviously increase battery is held
Amount, the service life for extending battery.
The second object of the present invention is to provide a kind of lithium ion battery, which is handled by above-mentioned charged partial volume
Method is made, and has the advantages that storing up electricity capacity is big, battery is grown.
The charged partial volume processing method of a kind of lithium ion battery provided by the invention, the processing method predominantly will be at chemical conversions
Lithium ion battery low current and high current alternating charge and discharge electric treatment after reason carry out charged partial volume.
Further, the low current is 0.15~0.25C；The high current is 1.8~2.5C.
Further, the low current and high current alternating charge and discharge electric treatment carries out the sequence of charged partial volume and is：
(a), battery first is with 350~450min of low current charge, subsequent 70~90Min of constant-voltage charge, shelve 3~
5min；
(b), 100~150min of battery heavy DC discharge of electricity, shelves 3~5min；
(c), 100~150min of battery high current constant-current charge, subsequent 70~90Min of constant-voltage charge, shelves 3~5min；
(d), battery low current direct current 350~450min of discharge of electricity shelves 3~5min, completes low current and high current is handed over
For the charged partial volume processing of charge and discharge.
Further, the electric current during step (a) low current charge and step (c) large current charge is constant electricity
Stream.
Further, the voltage of the step (a) and step (c) constant-voltage charge is 3.65V.
Further, the upper limit voltage during step (a) low current charge and step (c) large current charge
3.65V, lower voltage limit 2.0V.
Further, the step (a) and the cut-off current during step (c) constant-voltage charge are 0.01C.
Further, the low current and high current alternating charge and discharge electric treatment carries out the particular order of charged partial volume and is：
(a), battery first is with 0.15~0.25C, 350~450min of constant-current charge, upper limit voltage 3.65V, subsequent 3.65V
70~90Min of constant-voltage charge, cut-off current 0.01C, shelves 3~5min；
(b), 1.8~2.5C of battery direct currents, 100~150min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min；
(c), 1.8~2.5C of battery constant-current charges, 100~150min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
70~90Min, cut-off current 0.01C, shelves 3~5min；
(d), 0.15~0.25C of battery direct currents, 350~450min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min, complete
At low current and the charged partial volume processing of high current alternating charge and discharge.
Further, further include before carrying out charged partial volume processing cell voltage and internal resistance are measured and capacity into
The step of row sorting, the battery not up to standard to voltage or internal resistance exception and capacity not carries out combo.
A kind of lithium ion battery provided by the invention, the lithium ion battery are handled by the charged partial volume of above-mentioned lithium ion battery
Method is made.
Compared with prior art, beneficial effects of the present invention are：
The charged partial volume processing method of a kind of lithium ion battery provided by the invention, the charged partial volume processing method are mainly
Lithium ion battery after chemical conversion treatment low current and high current alternating charge and discharge electric treatment are subjected to charged partial volume, the charged partial volume
Processing method has the advantage that with short production cycle, capacity utilization is high, energy consumption is low, while can also obviously increase the storing up electricity of battery
Capacity, the service life for extending battery.
A kind of lithium ion battery provided by the invention, the lithium ion battery are made by above-mentioned charged partial volume processing method, tool
Have the advantages that storing up electricity capacity is big, battery length.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
According to an aspect of the present invention, a kind of charged partial volume processing method of lithium ion battery, the processing method are main
Charged partial volume is carried out for the low current of the lithium ion battery after chemical conversion treatment and high current are replaced charge and discharge electric treatment.
The charged partial volume processing method of a kind of lithium ion battery provided by the invention, the charged partial volume processing method are mainly
Lithium ion battery after chemical conversion treatment low current and high current alternating charge and discharge electric treatment are subjected to charged partial volume, the charged partial volume
Processing method has the advantage that with short production cycle, capacity utilization is high, energy consumption is low, while can also obviously increase the storing up electricity of battery
Capacity, the service life for extending battery.
In the preferred embodiment of the present invention, the low current is 0.15~0.25C；The high current is 1.8
~2.5C.
In the present invention, the above-mentioned typical but non-limiting content of low current is：0.15C、0.18C、0.2C、0.15C、
0.22C or 0.25C.
In the present invention, the above-mentioned typical but non-limiting content of high current is：1.8C, 1.9C, 2.0C, 2.2C, 2.4C or
2.5C。
In the preferred embodiment of the present invention, the low current and high current alternating charge and discharge electric treatment carry out charged
The sequence of partial volume is：
(a), battery first is with 350~450min of low current charge, subsequent 70~90min of constant-voltage charge, shelve 3~
5min；
(b), 100~150min of battery heavy DC discharge of electricity, shelves 3~5min；
(c), 100~150min of battery high current constant-current charge, subsequent 70~90Min of constant-voltage charge, shelves 3~5min；
(d), battery low current direct current 350~450min of discharge of electricity shelves 3~5min, completes low current and high current is handed over
For the charged partial volume processing of charge and discharge.
As a preferred embodiment, during step (a) low current charge and step (c) large current charge
Electric current be constant current.
As a preferred embodiment, the voltage of the step (a) and step (c) constant-voltage charge is 3.65V.
In the preferred embodiment of the present invention, step (a) low current charge and step (c) large current charge
Upper limit voltage 3.65V in the process, lower voltage limit 2.0V.
In the preferred embodiment of the present invention, the step (a) and the cut-off during step (c) constant-voltage charge
Electric current is 0.01C.
In above-mentioned preferred embodiment, the low current and high current replace the tool that charge and discharge electric treatment carries out charged partial volume
Body sequence be：
(a), battery first is with 0.15~0.25C, 350~450min of constant-current charge, upper limit voltage 3.65V, subsequent 3.65V
70~90Min of constant-voltage charge, cut-off current 0.01C, shelves 3~5min；
(b), 1.8~2.5C of battery direct currents, 100~150min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min；
(c), 1.8~2.5C of battery constant-current charges, 100~150min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
70~90Min, cut-off current 0.01C, shelves 3~5min；
(d), 0.15~0.25C of battery direct currents, 350~450min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min, complete
Replace the charged processing of charge and discharge at low current and high current.
In the preferred embodiment of the present invention, further include to cell voltage and interior before carrying out charged partial volume processing
The step of resistance measures and capacity is sorted, the battery not up to standard to voltage or internal resistance exception and capacity not carries out
Combo.
According to an aspect of the present invention, a kind of lithium ion battery, the lithium ion battery is by above-mentioned lithium ion battery lotus
Electric partial volume processing method is made.
A kind of lithium ion battery provided by the invention, the lithium ion battery are made by above-mentioned charged partial volume processing method, tool
Have the advantages that storing up electricity capacity is big, battery length.
Preferably, the processing method of the lithium ion battery includes the following steps：
(1) after battery is completed, injection electrolyte by several times, sealing are vacuumized；
(2) battery is shelved into 8~12h under constant temperature, stirs or rotate battery during shelving, make the every of battery
Certain time is placed downward in a face；
(3) battery after shelving carries out chemical conversion treatment, is melted into lithium ion battery；
(4) it after the completion of being melted into, deflated, vacuumized once again to battery, then sealing post-processing, obtains lithium-ion electric
Pond；
(5) battery post-processed is subjected to low current and high current replaces charge and discharge electric treatment, lithium ion battery is carried out
Charged partial volume, obtains lithium ion battery.
Technical scheme of the present invention is described further below in conjunction with embodiment and comparative example.
Embodiment 1
A kind of charged partial volume processing method of lithium ion battery, the specific method that the charged partial volume is handled are：
(a), battery first is with 0.15C constant-current charge 350min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
70Min, cut-off current 0.01C, shelves 3min；
(b), battery 1.8C direct currents discharge of electricity 100min, lower voltage limit 2.0V shelve 3min；
(c), battery 1.8C constant-current charges 100min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 70Min, cut-off
Electric current 0.01C, shelves 3min
(d), battery 0.15C direct currents discharge of electricity 350min, lower voltage limit 2.0V shelve 3min, complete low current and big electricity
The stream alternately charged partial volume processing of charge and discharge.
Embodiment 2
A kind of charged partial volume processing method of lithium ion battery, the specific method that the charged partial volume is handled are：
(a), battery first is with 0.25C 350~450min of constant-current charge, upper limit voltage 3.65V, and subsequent 3.65V constant pressures are filled
Electric 90Min, cut-off current 0.01C, shelves 5min；
(b), battery 2.5C direct currents discharge of electricity 150min, lower voltage limit 2.0V shelve 5min；
(c), 1.8~2.5C of battery constant-current charges 150min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 90Min,
Cut-off current 0.01C, shelves 5min
(d), battery 0.25C direct currents discharge of electricity 450min, lower voltage limit 2.0V shelve 5min, complete low current and big electricity
The stream alternately charged partial volume processing of charge and discharge.
Embodiment 3
A kind of charged partial volume processing method of lithium ion battery, the specific method that the charged partial volume is handled are：
(a), battery first is with 0.18C constant-current charge 380min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
75Min, cut-off current 0.01C, shelves 3min；
(b), battery 2.0C direct currents discharge of electricity 140min, lower voltage limit 2.0V shelve 4min；
(c), battery 2.0C constant-current charges 140min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 75Min, cut-off
Electric current 0.01C, shelves 4min
(d), battery 0.22C direct currents discharge of electricity 420min, lower voltage limit 2.0V shelve 4min, complete low current and big electricity
The stream alternately charged partial volume processing of charge and discharge.
Embodiment 4
A kind of charged partial volume processing method of lithium ion battery, the specific method that the charged partial volume is handled are：
(a), battery first is with 0.22C constant-current charge 420min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
85Min, cut-off current 0.01C, shelves 5min；
(b), battery 2.2C direct currents discharge of electricity 120min, lower voltage limit 2.0V shelve 4min；
(c), battery 2.2C constant-current charges 120min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 85Min, cut-off
Electric current 0.01C, shelves 4min
(d), battery 0.18C direct currents discharge of electricity 380min, lower voltage limit 2.0V shelve 4min, complete low current and big electricity
The stream alternately charged partial volume processing of charge and discharge.
Embodiment 5
A kind of charged partial volume processing method of lithium ion battery, the specific method that the charged partial volume is handled are：
(a), battery first is with 0.2C constant-current charge 400min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges
80Min, cut-off current 0.01C, shelves 4min；
(b), battery 2.1C direct currents discharge of electricity 120min, lower voltage limit 2.0V shelve 4min；
(c), battery 2.1C constant-current charges 120min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 80Min, cut-off
Electric current 0.01C, shelves 4min
(d), battery 0.2C direct currents discharge of electricity 400min, lower voltage limit 2.0V shelve 4min, complete low current and high current
The alternately charged partial volume processing of charge and discharge.
Comparative example 1
A kind of charged partial volume processing method of lithium ion battery, processing method include the following steps：
Lithium ion battery after chemical conversion treatment is shelved 3~5 days under constant temperature, then with the current versus cell of 1C into
Row repeated charge 10~20 times completes the charged partial volume of lithium ion battery.
Effect example 1
To show that big, battery uses the longevity to lithium ion battery made from the charged partial volume processing method of the present invention with storing up electricity capacity
Order long advantage.The existing special lithium ion battery that the embodiment of the present invention 1~5 and comparative example 1 are prepared carries out positive electrode gram
Capacity and loop attenuation situation are detected, and the results are shown in table below：
In conclusion the charged partial volume processing method of a kind of lithium ion battery provided by the invention, the charged partial volume processing
Lithium ion battery after chemical conversion treatment low current and high current alternating charge and discharge electric treatment are predominantly carried out charged partial volume by method,
The charged partial volume processing method has the advantage that with short production cycle, capacity utilization is high, energy consumption is low, while can also obviously increase
The storing up electricity capacity of battery, the service life for extending battery.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of charged partial volume processing method of lithium ion battery, which is characterized in that the processing method is predominantly by chemical conversion treatment
The low current of lithium ion battery afterwards and high current alternating charge and discharge electric treatment carry out charged partial volume.
2. the charged partial volume processing method of lithium ion battery according to claim 1, which is characterized in that the low current is
0.15~0.25C；The high current is 1.8~2.5C.
3. the charged partial volume processing method of lithium ion battery according to claim 1, which is characterized in that the low current and big
Electric current alternating charge and discharge electric treatment carries out the sequence of charged partial volume and is：
(a), battery shelves 3~5min with 350~450min of low current charge, subsequent 70~90Min of constant-voltage charge first；
(b), 100~150min of battery heavy DC discharge of electricity, shelves 3~5min；
(c), 100~150min of battery high current constant-current charge, subsequent 70~90Min of constant-voltage charge, shelves 3~5min；
(d), battery low current direct current 350~450min of discharge of electricity shelves 3~5min, completes low current and high current is alternately filled
The charged partial volume that discharges is handled.
4. the charged partial volume processing method of lithium ion battery according to claim 3, which is characterized in that the step (a) is small
It is constant current that electric current, which charges with the electric current during step (c) large current charge,.
5. the charged partial volume processing method of lithium ion battery according to claim 3, which is characterized in that the step (a) and
The voltage of step (c) constant-voltage charge is 3.65V.
6. the charged partial volume processing method of lithium ion battery according to claim 3, which is characterized in that the step (a) is small
Electric current charges and the upper limit voltage 3.65V, lower voltage limit 2.0V during step (c) large current charge.
7. the charged partial volume processing method of lithium ion battery according to claim 3, which is characterized in that the step (a) and
Cut-off current during step (c) constant-voltage charge is 0.01C.
8. the charged partial volume processing method of lithium ion battery according to claim 1, which is characterized in that the low current and big
Electric current alternating charge and discharge electric treatment carries out the particular order of charged partial volume and is：
(a), battery first is with 0.15~0.25C, 350~450min of constant-current charge, upper limit voltage 3.65V, subsequent 3.65V constant pressures
Charge 70~90Min, and cut-off current 0.01C shelves 3~5min；
(b), 1.8~2.5C of battery direct currents, 100~150min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min；
(c), 1.8~2.5C of battery constant-current charges, 100~150min, upper limit voltage 3.65V, subsequent 3.65V constant-voltage charges 70~
90Min, cut-off current 0.01C, shelves 3~5min；
(d), 0.15~0.25C of battery direct currents, 350~450min of discharge of electricity, lower voltage limit 2.0V shelve 3~5min, complete small
Electric current and the charged partial volume processing of high current alternating charge and discharge.
9. the charged partial volume processing method of lithium ion battery according to claim 1, which is characterized in that carrying out charged partial volume
Further include the steps that being measured to cell voltage and internal resistance and capacity sorts before processing, it is abnormal to voltage or internal resistance with
And capacity battery not up to standard not carries out combo.
10. a kind of lithium ion battery, which is characterized in that the lithium ion battery by claim 1~9 any one of them lithium from
Sub- battery charge partial volume processing method is made.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384853A (en) * | 2016-11-24 | 2017-02-08 | 山东精工电子科技有限公司 | Lithium ion battery stepped formation and consistency screening method |
| CN106711508A (en) * | 2016-11-29 | 2017-05-24 | 珠海汉格能源科技有限公司 | Capacity grading method of high-voltage lithium ion battery |
| CN106997960A (en) * | 2016-01-22 | 2017-08-01 | 福建猛狮新能源科技有限公司 | A kind of chemical conversion of lithium ion battery, partial volume method |
| CN107293812A (en) * | 2017-06-29 | 2017-10-24 | 青岛恒金源电子科技有限公司 | A kind of chemical conversion of lithium ion battery and method for group matching |
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2018
- 2018-02-28 CN CN201810170787.4A patent/CN108336434B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997960A (en) * | 2016-01-22 | 2017-08-01 | 福建猛狮新能源科技有限公司 | A kind of chemical conversion of lithium ion battery, partial volume method |
| CN106384853A (en) * | 2016-11-24 | 2017-02-08 | 山东精工电子科技有限公司 | Lithium ion battery stepped formation and consistency screening method |
| CN106711508A (en) * | 2016-11-29 | 2017-05-24 | 珠海汉格能源科技有限公司 | Capacity grading method of high-voltage lithium ion battery |
| CN107293812A (en) * | 2017-06-29 | 2017-10-24 | 青岛恒金源电子科技有限公司 | A kind of chemical conversion of lithium ion battery and method for group matching |
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