CN107394293B - A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery - Google Patents
A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery Download PDFInfo
- Publication number
- CN107394293B CN107394293B CN201710551634.XA CN201710551634A CN107394293B CN 107394293 B CN107394293 B CN 107394293B CN 201710551634 A CN201710551634 A CN 201710551634A CN 107394293 B CN107394293 B CN 107394293B
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- Prior art keywords
- ion battery
- lithium ion
- retired
- current
- retired lithium
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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
-
- 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
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The invention discloses a kind of restorative procedure of retired capacity of lithium ion battery and its repair circuit.The present invention charges to the retired lithium ion battery of reparation by the way of periodical low current bidirectional pulse, retired lithium ion battery generated polarity effect in each charge cycle can be eliminated, and the small lithium metal dendrite adhered in original negative electrode material can be eliminated, make the lithium metal dendrite on cathode there is part to be restored to active lithium ion again；After being full of, again with low current constant-current discharge, after repeating multipass, capacity has a degree of recovery, so that retired lithium ion battery has bigger application value, when carrying out retired lithium ion battery echelon applied to energy-storage system, also bigger electric energy can be stored, with the rapid development of new-energy automobile industry, a large amount of retired lithium ion battery will be generated every year, this patented technology is applied to retired lithium ion battery, is of great significance to the development of New Energy Industry and energy storage industry.
Description
Technical field
The present invention relates to battery capacity recovery techniques, and in particular to a kind of restorative procedure of retired capacity of lithium ion battery and
It repairs circuit.
Background technique
With new-energy automobile, energy-accumulating power station, family's energy storage, electric bicycle, electrodynamic balance vehicle, Segway Human Transporter, electricity
The rapid development of the industries such as power driven tools, using lithium ion battery as powering using more and more, power lithium in these industries
Ion battery is widely used, and lithium ion battery is in use, it may occur that polarity effect and active material loss make internal resistance
Increase, life time decay, life time decay after (generally 60%~80%), will become retired battery, retired electricity to a certain extent
The quantity in pond over the next several years can be increasing, and retired lithium ion battery can carry out capacity by certain technological means and repair
It is multiple, so that the capacity of battery pack is obtained recovery to a certain extent, but seldom for the capacity restorative procedure of lithium ion battery at present
There is producer to be studied.
Retired lithium ion battery is only carried out again parameter and surveyed by the existing application study for retired lithium ion battery
Amount and sorting, re-start combined application for the more consistent retired lithium ion battery of parameter, and majority is applied in energy storage field, and
Lack the restorative procedure research to retired capacity of lithium ion battery.If retired lithium ion battery can be made to pass through electronic technology method
It is repaired, and so that its capacity is obtained a degree of recovery, then retired battery is carried out echelon application, can be had very much using valence
Value, there is sizable meaning.
Summary of the invention
For the above problems of the prior art, the invention proposes a kind of reparations of retired capacity of lithium ion battery
Method and its reparation circuit, the major part in retired lithium ion battery that power is applied can be filled by low current bidirectional pulse
Electricity and low discharging current and the electronic technology means progress capacity reparation of circulation for several times, the capacity resuming after repairing
5%~30% etc., so as to be worth the application of retired lithium ion battery more, and with the outburst of new-energy automobile market
Formula increases, and the following retired power lithium-ion battery quantity can be quite big, using electronic technology restorative procedure by retired lithium-ion electric
Pond carries out echelon application after carrying out capacity reparation again, has sizable Practical significance.
An object of the present invention is to provide a kind of reparation circuits of retired capacity of lithium ion battery.
The reparation circuit of retired capacity of lithium ion battery of the invention include: charging circuit, charge switch, discharge circuit and
Discharge switch；Wherein, the anode of retired lithium ion battery to be repaired is connected with the anode of charging circuit, and charging circuit is born
End is connected with the cathode of retired lithium ion battery, and serial connection charge switchs between retired lithium ion battery and charging circuit, charging
After closing the switch, charging circuit charges to retired lithium ion battery, generates charging current；By retired lithium ion to be repaired
The anode of battery is connected with the anode of discharge circuit, and the negative terminal of discharge circuit is connected with the cathode of retired lithium ion battery,
Discharged in series switchs between retired lithium ion battery and discharge circuit, and after discharge switch closure, discharge circuit is to retired lithium ion
Battery discharges, and generates discharge current；When repairing to retired lithium ion battery, pass through the two-way arteries and veins of periodical low current
The mode of punching charges to retired lithium ion battery, then is a charge and discharge with low current constant current to retired lithium-ion electric tank discharge
Process, after carrying out multiple charge and discharge process, retired lithium ion battery reparation is completed.
Charge switch or discharge switch using field-effect tube, triode, insulated gate bipolar transistor IGBT, thyristor,
Relay or solid-state relay.Charge switch or discharge switch are connected to the anode of retired lithium ion battery, or are connected to and move back
The cathode of lithium ion battery is used as a servant, principle and anode use just the same.
It is another object of the present invention to provide a kind of restorative procedures of retired capacity of lithium ion battery.
The restorative procedure of retired capacity of lithium ion battery of the invention, comprising the following steps:
1) it is charged by the way of periodical low current bidirectional pulse to the retired lithium ion battery of reparation, until moving back
The voltage of labour lithium ion battery reaches charging limitation voltage:
In each charge cycle, charge switch is closed by the most of the time, and discharge switch disconnects, positive pulse electric current stream
Through retired lithium ion battery, show as charging；In each charge cycle, fraction of time disconnects charge switch, electric discharge
It closes the switch, negative pulse current flows through retired lithium ion battery, shows as discharging；Wherein, the time of positive pulse electric current is greater than negative
The time of pulse current, retired lithium ion battery absorb energy in positive pulse electric current, release energy in negative pulse current, move back
It uses as a servant energy storage of the lithium ion battery in each charge cycle to increase, total shows as charged state, and energy storage increases, and voltage increases；
The mode of this periodicity low current bidirectional pulse, insertion of the retired lithium ion battery on positive and negative pole material is uniform with abjection
, since in each charge cycle, with the presence of negative pulse current, retired lithium ion battery can be eliminated in each charging week
Polarity effect caused by interim, and the small lithium metal branch adhered in the original negative electrode material of retired lithium ion battery can be eliminated
Crystalline substance makes the lithium metal dendrite on cathode have part to be restored to active lithium ion again；
2) it when the voltage of retired lithium ion battery reaches charging limitation voltage, into wait state, is filled when voltage is less than
When electricity limitation voltage, a pulse is recharged, wait state is again introduced into, with the progress of this charging process, two pulses
Between interval time can increasingly grow, when the interval time between two pulses reach full of judge interval time when, charge
It completes, stops charging；
3) retired lithium ion battery is discharged with low current constant current, until voltage stops when reaching discharge cut-off voltage
Only；
4) step 1)~3 are repeated) multipass, restores the capacity of retired lithium ion battery, completes repairing for retired lithium ion battery
Multiple process.
Wherein, in step 1), in a charge cycle, charging current is set between 0.05C~0.2C；Discharge current
It is set between 0.05C~0.2C；The time of one charge cycle is between 10mS~10S；The duty ratio of positive pulse electric current exists
Between 90%~99%.
In step 2), it is full of and judges interval time for 3~8 seconds.
In step 3), the discharge current of low current constant current is between 0.05C~0.2C.
In step 4), repeats 3~5 times, complete the reparation of retired lithium ion battery.
Advantages of the present invention:
The present invention charges to the retired lithium ion battery of reparation by the way of periodical low current bidirectional pulse, energy
Retired lithium ion battery generated polarity effect in each charge cycle is enough eliminated, and it is former to eliminate retired lithium ion battery
There is the small lithium metal dendrite adhered in negative electrode material, the lithium metal dendrite on cathode is made to have part to be restored to have again
Active lithium ion；After retired lithium ion battery is full of, then with low current constant-current discharge, after repeating multipass, retired lithium-ion electric
The capacity in pond has a degree of recovery so that retired lithium ion battery has bigger application value, carry out retired lithium from
When sub- battery echelon is applied to energy-storage system, bigger electric energy can be also stored, with the rapid development of new-energy automobile industry, often
A large amount of retired lithium ion battery will be generated year, this patented technology is applied to retired lithium ion battery, new energy is produced
The development of industry and energy storage industry is of great significance.
Detailed description of the invention
Fig. 1 is the structural block diagram of one embodiment of the reparation circuit of retired capacity of lithium ion battery of the invention；
Fig. 2 is the pulse schematic diagram of the charge cycle of the restorative procedure of retired capacity of lithium ion battery of the invention；
Fig. 3 is the electric current of the charge cycle of one embodiment of the restorative procedure of retired capacity of lithium ion battery of the invention
Figure.
Specific embodiment
With reference to the accompanying drawing, by specific embodiment, the present invention is further explained.
As shown in Figure 1, the reparation circuit of the retired capacity of lithium ion battery of the present embodiment includes: charging circuit, charges and open
Pass, discharge circuit and discharge switch；Wherein, the anode connection charge switch of retired lithium ion battery to be repaired, charge switch
It is connected with the anode of charging circuit, the negative terminal of charging circuit is connected with the cathode of retired lithium ion battery, in charge switch
After closure, charging circuit charges to retired lithium ion battery, generates charging current；By retired lithium ion battery to be repaired
Anode connection discharge switch, discharge switch is connected with the anode of discharge circuit, the negative terminal of discharge circuit and retired lithium ion
The cathode of battery is connected, and discharge circuit discharges to lithium ion battery after discharge switch closure, generates discharge current.
As shown in Fig. 2, periodical low current bidirectional pulse, the time of a charge cycle is between 10mS~10S.
The restorative procedure of the retired capacity of lithium ion battery of the present embodiment, comprising the following steps:
1) it is charged by the way of periodical low current bidirectional pulse to the retired lithium ion battery of reparation, Zhi Dao electricity
Cell voltage reaches 4.2V:
In each charge cycle, charge switch is closed by 90% time, and discharge switch disconnects, and positive pulse electric current flows through
Battery, charging current show as charging between 0.05C~0.2C；Charge cycle is 2s, in each charge cycle,
10% time disconnected charge switch, and discharge switch closure, negative pulse current flows through battery, and discharge current is in 0.05C~0.2C
Between, it shows as discharging, as shown in Figure 3；
2) when cell voltage reaches 4.2V, an arteries and veins is recharged when cell voltage is less than 4.2V into wait state
Punching, is again introduced into wait state, and with the progress of this charging process, the interval time between two pulses can increasingly be grown,
When the interval time between two pulses reaching 5s, charging complete stops charging；
3) battery is discharged with 0.1C constant current, until stopping when voltage reaches 3V；
4) step 1)~3 are repeated) 3 times, restore the capacity of retired lithium ion battery to a certain extent, complete retired lithium from
The repair process of sub- battery.
It is finally noted that the purpose for publicizing and implementing example is to help to further understand the present invention, but this field
Technical staff be understood that without departing from the spirit and scope of the invention and the appended claims, it is various replacement and repair
It is all possible for changing.Therefore, the present invention should not be limited to embodiment disclosure of that, and the scope of protection of present invention is to weigh
Subject to the range that sharp claim defines.
Claims (4)
1. a kind of restorative procedure of retired capacity of lithium ion battery, which is characterized in that the restorative procedure the following steps are included:
1) it is charged by the way of periodical low current bidirectional pulse to the retired lithium ion battery of reparation, until retired lithium
The voltage of ion battery reaches charging limitation voltage:
In each charge cycle, charge switch is closed by the most of the time, and discharge switch disconnects, and positive pulse electric current, which flows through, to move back
Lithium ion battery is used as a servant, shows as charging；In each charge cycle, fraction of time disconnects charge switch, discharge switch
Closure, negative pulse current flow through retired lithium ion battery, show as discharging；Wherein, the time of positive pulse electric current is greater than negative pulse
The time of electric current, retired lithium ion battery absorb energy in positive pulse electric current, and energy, retired lithium are released in negative pulse current
Energy storage of the ion battery in each charge cycle increases, and total shows as charged state, and energy storage increases,
Voltage increases；The mode of this periodicity low current bidirectional pulse, retired lithium ion battery are embedding on positive and negative pole material
It is uniform for entering with abjection, due to that, with the presence of negative pulse current, can eliminate retired lithium-ion electric in each charge cycle
Pond generated polarity effect in each charge cycle, and can eliminate and adhere in the original negative electrode material of retired lithium ion battery
Small lithium metal dendrite makes the lithium metal dendrite on cathode have part to be restored to active lithium ion again；
2) when the voltage of retired lithium ion battery reaches charging limitation voltage, into wait state, when voltage is less than charging limit
When voltage processed, a pulse is recharged, wait state is again introduced into, with the progress of this charging process, between two pulses
Interval time can increasingly grow, when the interval time between two pulses reach full of judge interval time when, charging complete,
Stop charging；
3) retired lithium ion battery is discharged with low current constant current, until stopping when voltage reaches discharge cut-off voltage；
4) step 1)~3 are repeated) multipass, restores the capacity of retired lithium ion battery, completes the reparation of retired lithium ion battery
Journey；
In step 1), for the duty ratio of positive pulse electric current between 90%~99%, the most of the time, which refers to, accounts for a charging week
Between the 90%~99% of phase；
In step 1), in a charge cycle, charging current is set between 0.05C~0.2C；Discharge current is set in
Between 0.05C~0.2C；
In step 3), the discharge current of low current constant current is between 0.05C~0.2C.
2. restorative procedure as described in claim 1, which is characterized in that in step 1), the time of a charge cycle exists
Between 10mS~10S.
3. restorative procedure as described in claim 1, which is characterized in that in step 2), be full of and judge interval time for 3~8
Second.
4. restorative procedure as described in claim 1, which is characterized in that in step 4), repeat 3~5 times, complete retired lithium from
The reparation of sub- battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710551634.XA CN107394293B (en) | 2017-07-07 | 2017-07-07 | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery |
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| CN201710551634.XA CN107394293B (en) | 2017-07-07 | 2017-07-07 | A kind of restorative procedure and its reparation circuit of retired capacity of lithium ion battery |
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| CN107394293B true CN107394293B (en) | 2019-06-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110021793A (en) * | 2018-01-09 | 2019-07-16 | 深圳市普兰德储能技术有限公司 | A method of repairing retired performance of lithium ion battery |
| CN110797593A (en) * | 2019-11-06 | 2020-02-14 | 谈益 | Activation method of renewable power supply |
| US11469452B2 (en) | 2019-11-12 | 2022-10-11 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte Zn ion battery |
| CN111082167B (en) * | 2019-11-29 | 2020-12-25 | 天能电池集团股份有限公司 | Method for repairing returned storage battery |
| JP7142697B2 (en) * | 2020-02-21 | 2022-09-27 | 深▲せん▼市普蘭徳儲能技術有限公司 | How to repair used battery modules |
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