CN113640692A - Method for manufacturing lithium battery by gradient utilization and lithium battery manufactured by same - Google Patents
Method for manufacturing lithium battery by gradient utilization and lithium battery manufactured by same Download PDFInfo
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- CN113640692A CN113640692A CN202110924540.9A CN202110924540A CN113640692A CN 113640692 A CN113640692 A CN 113640692A CN 202110924540 A CN202110924540 A CN 202110924540A CN 113640692 A CN113640692 A CN 113640692A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 52
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical group [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(ii,iv) oxide Chemical compound O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 description 4
- 241001481833 Coryphaena hippurus Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 229940035105 lead tetroxide Drugs 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- 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
-
- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a method for manufacturing a lithium battery by echelon utilization, which comprises the following steps of: step 1, disassembling a waste lithium battery to obtain a plurality of strings of battery cells; step 2, measuring each battery cell, and selecting the battery cell with available capacity more than or equal to 70%; step 3, carrying out HPPC test on the selected battery cell, and selecting the battery cell of which DCR is less than or equal to 4.5m omega and ACR is less than or equal to 2.5m omega; step 4, matching the obtained electric cores to prepare a battery pack with the battery capacity more than or equal to 42 Ah; step 5, detecting the battery pack; and 6, selecting the qualified battery pack to be used as a echelon to manufacture the lithium battery. The available ex-service battery cores are screened out by the method and made into 12V lithium batteries, so that the servicing quality is reduced, and the arrangement space of the whole vehicle is saved. Meanwhile, the whole vehicle cost can be saved, the environmental pollution is reduced, and the retired battery cell is secondarily utilized.
Description
Technical Field
The invention relates to the field of new energy pure electric vehicle power batteries, in particular to the field of recycling echelon of electric vehicle power batteries and the popularization and application of 12V lithium batteries.
Background
Along with the gradual industrialization of electric automobiles, the yield of lithium batteries for electric automobiles is greatly improved, and the problem that how to recover and treat the lithium batteries is eliminated is solved. According to the national use standard of batteries of electric vehicles, when the capacity of the lithium ion battery is reduced to 80% of the original capacity, the lithium ion battery is not suitable for being continuously used on the electric vehicle, so that the cost of the whole vehicle is increased; the lithium battery for the electric automobile contains a lithium metal material and an electrolyte, and once the waste lithium battery cannot be effectively recycled, not only is the resource waste caused, but also the environmental pollution is serious. Therefore, the lithium ion battery can be used in a graded manner under the conditions that each functional element of the lithium ion battery is effective, is not damaged and has good appearance. Meanwhile, in 2019, an environmental protection proposal prepared by the committee of the european union mainly aims at that four battery lead compounds (lead monoxide, lead tetroxide, lead pentoxide sulfuric acid and lead tetroxide sulfate) are not used in future products, and a 12V lithium battery also becomes the main content of controversial research of various manufacturers, so that a reliable method for recycling the attenuated lithium battery is needed at present.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a method for manufacturing a lithium battery with attenuated capacity into a 12V lithium battery product by adopting a echelon utilization method.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for manufacturing a lithium battery by echelon utilization comprises the following steps:
step 1, disassembling a waste lithium battery to obtain a plurality of strings of battery cells;
step 2, measuring each battery cell, and selecting the battery cell with available capacity more than or equal to 70%;
step 3, carrying out HPPC test on the selected battery cell, and selecting the battery cell of which DCR is less than or equal to 4.5m omega and ACR is less than or equal to 2.5m omega;
step 4, matching the obtained electric cores to prepare a battery pack with the battery capacity more than or equal to 42 Ah;
step 5, detecting the battery pack;
and 6, selecting the qualified battery pack to be used as a echelon to manufacture the lithium battery.
In the step 1, the waste lithium battery is a battery with capacity attenuation more than 20%, and the chemical type of the battery is a lithium iron phosphate battery or a graphite battery.
In the step 3, the HPPC test is in the form of an alternating current/direct current resistance value of the battery cell at 50% SOC.
In the step 4, the battery cells obtained in the step 3 are matched by using 2P 4S.
In the step 5, the detection method comprises the following steps:
firstly, carrying out 1C charge-discharge test on the battery pack, wherein the required capacity is more than or equal to 42 Ah;
then detecting static pressure difference of 30-80% SOC of the battery pack, wherein the static pressure difference is required to be less than or equal to 50 mV;
and finally, detecting the dynamic pressure difference of 0-100% SOC of the battery pack, wherein the dynamic pressure difference is required to be less than or equal to 200 mV.
A lithium battery is manufactured by the method.
The lithium battery is a 12V lithium battery.
The invention screens out available ex-service battery cores to manufacture 12V lithium batteries, and has the following main advantages:
1. by the method, the cells which can be utilized in a gradient manner can be rapidly screened out;
2. the lithium power lithium battery subjected to echelon utilization has low self-discharge rate and multiple cycle times, the retired lithium power lithium battery can still have an actual service life of 5 years theoretically after the echelon utilization, and has a deep cycle time of more than 400 times, and the service life of the lithium power lithium battery is greatly prolonged compared with the service life of 2 years and the deep cycle time of about 50 times of the traditional lead-acid battery;
3. meanwhile, compared with the original lead-acid battery of the finished automobile, the weight of the prepared 12V lithium battery can be reduced by at least 2/3, the space occupation ratio is smaller, and the structural arrangement of the finished automobile is easier.
Drawings
The following is a brief description of the contents of each figure in the description of the present invention:
fig. 1 is a flow chart of a method for manufacturing a lithium battery by using echelon utilization.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.
The invention screens the usable retired battery cell from the waste lithium battery to manufacture the 12V lithium battery, thereby reducing the servicing quality and saving the layout space of the whole vehicle. Meanwhile, the whole vehicle cost can be saved, the environmental pollution is reduced, and the retired battery cell is secondarily utilized.
Disassembling and disassembling batteries with dolphin EV capacity attenuation exceeding 20% to obtain 456 strings of batteries, strictly screening the batteries to obtain batteries meeting the condition of preparing a 12V lithium battery, then assembling to obtain a 12V lithium battery system, and finally performing charge-discharge test on the system to screen out the 12V lithium battery meeting the condition.
The method specifically comprises the following steps:
disassembling and disassembling dolphin EV retired batteries (see parameters in the following table one in detail), and obtaining 456 strings of battery cores for each battery pack;
2. carrying out capacity test on the battery cell, selecting the battery cell with available capacity more than or equal to 70%, and carrying out HPPC test on the battery cell to obtain the alternating current-direct current resistance value of the battery cell at 50% SOC, wherein the DCR is required to be less than or equal to 4.5m omega, and the ACR is required to be less than or equal to 2.5m omega;
3. matching the battery cells according to 2P4S, wherein the battery capacity is required to be more than or equal to 42Ah after matching;
4. and (3) carrying out 1C charge-discharge test on the batteries after the batteries are matched, requiring the verification of the capacity, and simultaneously requiring that the static pressure difference in 30-80% of SOC is less than or equal to 50mV and the dynamic pressure difference in 0-100% is less than or equal to 200 mV.
And the module meeting all the conditions is accessed into the battery management system, and a 12V lithium battery product can be obtained.
The battery parameter information is as follows:
| 1. | name of single battery | Lithium ion accumulator |
| 2. | Type of single battery | IFP20100140A-30Ah |
| 3. | Of the electrochemical type | Lithium iron phosphate/graphite |
| 4. | Battery type (energy type/power type) | Energy type |
| 5. | Unit for producing single battery | Hefei Guoxuan High-Tech Power Energy Co.,Ltd. |
| 6. | Production date of single battery | 2018.6 |
| 7. | Rated voltage (V) of single battery | 3.2 |
| 8. | Rated capacity of single battery (Ah) | 30 |
| 9. | Maximum charging and discharging current (A) (10s) | Charging current: 60A; discharge current: 90A |
| 10. | End voltage (V) of charging and discharging of single battery | Charging: 3.65V; discharging: 2.0V |
| 11. | External dimension of single battery (mm) | (20.5±0.5)×(100±1)×(140±1) |
| 12. | Weight of single battery (kg) | 0.603±0.015 |
| 13. | Battery module name | Power lithium ion battery module |
| 14. | Model of battery module | 5S1P module |
| 15. | Battery module production unit | Hefei Guoxuan High-Tech Power Energy Co.,Ltd. |
| 16. | Rated voltage (V) of battery module | 16 |
| 17. | Battery module rated capacity (Ah) | 30 |
| 18. | Maximum charging and discharging current (A) (10s) | Charging current: 60A; discharge current: 90A |
| 19. | Battery module charge-discharge end voltage (V) | Charging: 18.25V: discharging: 10.0V |
| 20. | Battery module overall dimension (mm) | 120×140×150 |
| 21. | Battery module weight (kg) | 3.28±0.01 |
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (7)
1. A method for manufacturing a lithium battery by echelon utilization is characterized by comprising the following steps:
step 1, disassembling a waste lithium battery to obtain a plurality of strings of battery cells;
step 2, measuring each battery cell, and selecting the battery cell with available capacity more than or equal to 70%;
step 3, carrying out HPPC test on the selected battery cell, and selecting the battery cell of which DCR is less than or equal to 4.5m omega and ACR is less than or equal to 2.5m omega;
step 4, matching the obtained electric cores to prepare a battery pack with the battery capacity more than or equal to 42 Ah;
step 5, detecting the battery pack;
and 6, selecting the qualified battery pack to be used as a echelon to manufacture the lithium battery.
2. The method for manufacturing a lithium battery by echelon utilization as claimed in claim 1, wherein: in the step 1, the waste lithium battery is a battery with capacity attenuation more than 20%, and the chemical type of the battery is a lithium iron phosphate battery or a graphite battery.
3. The method for manufacturing a lithium battery by echelon utilization as claimed in claim 2, wherein: in the step 3, the HPPC test is in the form of an alternating current/direct current resistance value of the battery cell at 50% SOC.
4. The method for manufacturing a lithium battery by echelon utilization as claimed in claim 3, wherein: in the step 4, the battery cells obtained in the step 3 are matched by using 2P 4S.
5. The method for manufacturing a lithium battery by using the echelon as set forth in any one of claims 1 to 4, wherein: in the step 5, the detection method comprises the following steps:
firstly, carrying out 1C charge-discharge test on the battery pack, wherein the required capacity is more than or equal to 42 Ah;
then detecting static pressure difference of 30-80% SOC of the battery pack, wherein the static pressure difference is required to be less than or equal to 50 mV;
and finally, detecting the dynamic pressure difference of 0-100% SOC of the battery pack, wherein the dynamic pressure difference is required to be less than or equal to 200 mV.
6. A lithium battery, characterized in that: manufactured by the method of any one of claims 1 to 5.
7. A lithium battery as claimed in claim 6, characterized in that: the lithium battery is a 12V lithium battery.
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| CN202110924540.9A CN113640692B (en) | 2021-08-12 | 2021-08-12 | Method for manufacturing lithium battery by gradient utilization and lithium battery manufactured by method |
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| CN202110924540.9A CN113640692B (en) | 2021-08-12 | 2021-08-12 | Method for manufacturing lithium battery by gradient utilization and lithium battery manufactured by method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116027213A (en) * | 2023-02-07 | 2023-04-28 | 中国铁塔股份有限公司 | Retired battery grouping method and device, electronic equipment and readable storage medium |
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| US20190190282A1 (en) * | 2016-08-31 | 2019-06-20 | Hangzhou Gold Electronic Equipment Inc., Ltd. | Method for combined use of various batteries |
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-
2021
- 2021-08-12 CN CN202110924540.9A patent/CN113640692B/en active Active
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|---|---|---|---|---|
| CN102760914A (en) * | 2012-07-20 | 2012-10-31 | 深圳市雄韬电源科技股份有限公司 | Matching method for lithium ion power batteries |
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| Title |
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| XIAOLIN CHEN ET AL.: "Operational reliability and economy evaluation of reusing retired batteries in composite power systems", INTERNATIONAL JOURNAL OF ENERGY RESEARCH, vol. 44, no. 5, 4 April 2020 (2020-04-04), pages 3657 - 3673, XP071646112, DOI: 10.1002/er.5147 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116027213A (en) * | 2023-02-07 | 2023-04-28 | 中国铁塔股份有限公司 | Retired battery grouping method and device, electronic equipment and readable storage medium |
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