CN113471557A - Method for utilizing retired power battery into AGV battery in gradient manner - Google Patents
Method for utilizing retired power battery into AGV battery in gradient manner Download PDFInfo
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- CN113471557A CN113471557A CN202110811175.0A CN202110811175A CN113471557A CN 113471557 A CN113471557 A CN 113471557A CN 202110811175 A CN202110811175 A CN 202110811175A CN 113471557 A CN113471557 A CN 113471557A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007600 charging Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000010277 constant-current charging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Classifications
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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
- H01M10/4207—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
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- 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
- 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Hybrid Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a method for utilizing retired power batteries into AGV batteries in a gradient manner, which is used for determining and recording parameters of original AGV batteries, wherein the parameters comprise appearance size, battery capacity, rated voltage, charging current and discharging current; testing the basic attribute of the retired power battery; carrying out charge and discharge tests on the retired power battery, setting upper and lower voltage limits, and recording basic parameters of the battery; dismantling and rejecting the battery with the temperature difference of less than 6 ℃ and the pressure difference of less than 30mV, and recording the parameters of the rest retired power battery; selecting and combining a plurality of retired power batteries according to the maximum continuous charging current of the original AGV battery; the number h of series connection of the battery cells is greater than the ratio of the original battery voltage to the voltage of the single battery cell; the parallel number k of the battery cells is calculated by the power of the primary battery, the single voltage and the capacity of the single battery cells; and combining the selected retired power batteries in a k parallel connection and h series connection mode, and placing the combined retired power batteries into an insulated battery box. The battery cell is safer and more reliable, has better performance and meets the operation requirement.
Description
Technical Field
The invention belongs to the field of battery recycling, and particularly relates to a method for utilizing retired power batteries into AGV batteries in a gradient manner.
Background
The existing lead-acid battery adopted by the lifting AGV in the existing factory has low energy density and short service life; some lithium ion batteries have good service life and performance, but are high in price, and the operation cost of a factory is seriously influenced; the existing echelon battery can only be used on a small AGC, and the requirement of a chassis lifting large AGV battery cannot be met.
Disclosure of Invention
The invention aims to provide a method for utilizing retired power batteries into AGV batteries in a echelon mode, and aims to solve the problems that the existing echelon battery screening technology is poor, and indexes such as cell capacity, voltage, internal resistance and self-discharge rate are poor in consistency.
The invention is realized in such a way that a method for utilizing retired power batteries into AGV batteries in a gradient way comprises the following steps:
s1: determining and recording parameters of the original AGV battery, wherein the parameters comprise appearance size, battery capacity, rated voltage, charging current and discharging current;
s2: testing basic properties of the retired power battery, wherein the basic properties comprise appearance, OCV value and internal resistance;
s3: carrying out charge and discharge tests on the retired power battery, setting upper and lower voltage limits, and recording basic parameters of the battery;
s4: dismantling and rejecting the battery with the temperature difference of less than 6 ℃ and the pressure difference of less than 30mV, and recording the parameters of the rest retired power battery;
s5: selecting and combining a plurality of retired power batteries according to the maximum continuous charging current of the original AGV battery;
s6: the number h of series connection of the battery cells is greater than the ratio of the original battery voltage to the voltage of the single battery cell; the parallel number k of the battery cells is calculated by the power of the primary battery, the single voltage and the capacity of the single battery cells;
s7: and combining the selected retired power batteries in a k parallel connection and h series connection mode, and placing the combined retired power batteries into an insulated battery box.
The further technical scheme of the invention is as follows: the step S2 includes the steps of:
s21: judging by naked eyes, if the casing of the retired power battery is intact, the surface is smooth and has no deformation, cracks or liquid leakage, entering the next step, and otherwise, removing after disassembly;
s22: testing the OCV value by using a universal meter, if the positive ground is more than 2M omega, the negative ground is more than 2M omega, the positive shell is more than 2M omega, and the negative shell is more than 2M omega, entering the next step, otherwise, removing after disassembling;
s23: testing internal resistance by using an alternating current internal resistance instrument, if R isdch≤2R0dchOtherwise, go to step S3, otherwise, remove it after disassembly.
The further technical scheme of the invention is as follows: the step S3 includes:
s31: standing the retired power battery for 0.5h, then discharging the retired power battery at a constant current, and setting a lower voltage limit according to the characteristics of the battery cell;
s32: standing the retired power battery for 2 hours, then performing constant-current charging, and setting an upper voltage limit according to the characteristics of the battery core;
s33: and (4) discharging at constant current after standing for 2h, setting a lower voltage limit according to the characteristics of the battery cell, and standing for 2 h.
The further technical scheme of the invention is as follows: the basic parameters include the capacity, energy, power, total current, total voltage, insulation value, SOC, cell voltage difference, maximum cell voltage, minimum cell voltage, average cell voltage, maximum cell temperature, maximum temperature number, minimum cell temperature, average cell temperature, cell voltage, and cell temperature of the battery.
The further technical scheme of the invention is as follows: the method comprises the following steps that primary battery power W1= working voltage multiplied by total capacity, echelon battery pack power W2= working voltage multiplied by total capacity = monomer voltage multiplied by parallel connection multiplied by monomer cell capacity, the value of a parallel connection number k is calculated through the formula, and the numerical value of the k is an integer.
The further technical scheme of the invention is as follows: in step S7, a battery pack is manufactured by using a circuit with a charging/discharging current of less than or equal to 100A in a BMS and fuse combination manner; and a circuit with the charging and discharging current being more than or equal to 100A is used for manufacturing the battery pack in a BMS (battery management system), fuse, relay and shunt comprehensive protection mode.
The invention has the beneficial effects that: this design of lifting AGV battery has adopted the method that the system is reasonable from retired power battery package test to electric core letter sorting, screening for the electric core that arrives is safer and more reliable, and the performance is better, and the components and parts lectotype is to the line design use operating mode that the former AGV that lifts more laminates, satisfies its charge-discharge current, voltage, uses long waiting operation demand.
Drawings
Fig. 1 is a main flow chart provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 shows a method for performing echelon utilization on an retired power battery to an AGV battery, which includes the following steps:
s1: determining and recording parameters of the original AGV battery, wherein the parameters comprise appearance size, battery capacity, rated voltage, charging current and discharging current;
s2: testing basic properties of the retired power battery, wherein the basic properties comprise appearance, OCV value and internal resistance;
s3: carrying out charge and discharge tests on the retired power battery, setting upper and lower voltage limits, and recording basic parameters of the battery;
s4: dismantling and rejecting the battery with the temperature difference of less than 6 ℃ and the pressure difference of less than 30mV, and recording the parameters of the rest retired power battery;
s5: selecting and combining a plurality of retired power batteries according to the maximum continuous charging current of the original AGV battery;
s6: the number h of series connection of the battery cells is greater than the ratio of the original battery voltage to the voltage of the single battery cell; the parallel number k of the battery cells is calculated by the power of the primary battery, the single voltage and the capacity of the single battery cells;
s7: and combining the selected retired power batteries in a k parallel connection and h series connection mode, and placing the combined retired power batteries into an insulated battery box.
Preferably, the step S2 includes the steps of:
s21: judging by naked eyes, if the casing of the retired power battery is intact, the surface is smooth and has no deformation, cracks or liquid leakage, entering the next step, and otherwise, removing after disassembly;
s22: testing the OCV value by using a universal meter, if the positive ground is more than 2M omega, the negative ground is more than 2M omega, the positive shell is more than 2M omega, and the negative shell is more than 2M omega, entering the next step, otherwise, removing after disassembling;
s23: testing internal resistance by using an alternating current internal resistance instrument, if R isdch≤2R0dchOtherwise, go to step S3, otherwise, remove it after disassembly.
Preferably, the step S3 includes:
s31: standing the retired power battery for 0.5h, then discharging the retired power battery at a constant current, and setting a lower voltage limit according to the characteristics of the battery cell;
s32: standing the retired power battery for 2 hours, then performing constant-current charging, and setting an upper voltage limit according to the characteristics of the battery core;
s33: and (4) discharging at constant current after standing for 2h, setting a lower voltage limit according to the characteristics of the battery cell, and standing for 2 h.
Preferably, the basic parameters include a capacity, energy, power, total current, total voltage, insulation value, SOC, cell differential pressure, maximum cell voltage, minimum cell voltage, average cell voltage, maximum cell temperature, maximum temperature number, minimum cell temperature, average cell temperature, cell voltage, and cell temperature of the battery.
Preferably, the primary battery power W1= operating voltage × total capacity, the echelon battery pack power W2= operating voltage × total capacity = cell voltage × parallel connection k × cell capacity, a value of the parallel connection number k is calculated by the formula, and the value of k is an integer.
Preferably, in step S7, a battery pack is manufactured by using a circuit with a charging/discharging current less than or equal to 100A in a combination manner of BMS and a fuse; and a circuit with the charging and discharging current being more than or equal to 100A is used for manufacturing the battery pack in a BMS (battery management system), fuse, relay and shunt comprehensive protection mode.
The invention provides a method for utilizing retired power batteries into AGV batteries in a echelon mode.
Firstly, determining original AGV parameters including appearance size, battery capacity, rated voltage, charging current and discharging current, wherein the parameters are the standard for screening retired power batteries subsequently, then screening the appearances of the batteries, eliminating the batteries with damaged shells, deformed surfaces, cracks and liquid leakage, testing the OCV value by using a universal meter, and if the batteries are just right opposite to the ground>2M Ω, negative to ground>2M omega, the positive opposite shell is more than 2M omega, the negative opposite shell is more than 2M omega, the standard is met, the internal resistance is tested by using an alternating current internal resistance instrument, and if R is greater than 2M omegadch≤2R0dchAnd the basic property of the retired power battery is qualified. And next, in steps S31-S33, performing charge-discharge test on the retired power battery, charging the battery cell, discharging the monomer battery cell at 2C under the condition of 25 +/-5 ℃ until the voltage of the battery cell (ternary/lithium iron phosphate) reaches 3.5/2.5V, standing for 1h, then charging at 1C constant current under the condition of 25 +/-5 ℃, converting to constant voltage charging when the voltage reaches 4.15/3.6V, stopping charging when the charging current is reduced to 1C, and standing for lh after charging. Discharging capacity at 25 ℃, discharging the battery cell at 25 +/-5 ℃ by 2C current until the battery cell discharges to cut-off voltage (ternary/lithium iron phosphate) of 3.5/2.5V, and stopping discharging; calculating the actual discharge capacity according to the discharge current value and the discharge time; to ensure that the data is accurate, it is recommended to cycle more than twice. The standing is to eliminate the influence of temperature on capacity and voltage. And then recording basic parameters of the retired power battery, including the capacity, energy, power, total current, total voltage, insulation value, SOC, cell voltage difference, maximum cell voltage, minimum cell voltage, average cell voltage, maximum cell temperature, maximum temperature serial number, minimum cell temperature, average cell temperature, cell voltage and cell temperature of the battery.
Selecting the total capacity of the module: selecting a proper lithium battery cell according to the maximum continuous charging current, wherein if the charging current is aA and the cell is charged by bC, the required total capacity of the cell is C which is more than or equal to a/b; selecting the number h of the battery cores: the primary battery voltage is U1, the single cell voltage is U2, the cell number requirement is more than or equal to U1/U2= h power analysis: primary battery power W1= operating voltage × total capacity. The echelon battery pack power W2= working voltage multiplied by total capacity = monomer voltage multiplied by parallel connected k multiplied by monomer battery cell capacity, W2 is more than or equal to W1, and after the integration, the combination of the battery cells is determined to be k parallel connected h strings. The electrical design method comprises the following steps: the reasonable design of the electric appliance can better protect the echelon battery pack and optimize the cost of the whole pack; a circuit with charging and discharging current less than or equal to 100A preferentially recommends a combination mode of BMS and a fuse; and a circuit with charging and discharging current being more than or equal to 100A adopts a BMS, fuse, relay and shunt comprehensive protection mode, and selects types of all components according to actual current, and combines the k parallel h series retired power batteries into an insulated battery box.
The insulated battery box has an effective insulated structure design, comprises a bottom plate insulator, an insulated base plate and the like, and simultaneously, all exposed electrodes are covered by insulating materials and cover plates; for making things convenient for the battery module assembly, still designed hoist device, set up the handle that supplies to take on outer box, and set up waterproof construction, guarantee safe in utilizationly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A method for utilizing retired power batteries into AGV batteries in a gradient manner is characterized by comprising the following steps:
s1: determining and recording parameters of the original AGV battery, wherein the parameters comprise appearance size, battery capacity, rated voltage, charging current and discharging current;
s2: testing basic properties of the retired power battery, wherein the basic properties comprise appearance, OCV value and internal resistance;
s3: carrying out charge and discharge tests on the retired power battery, setting upper and lower voltage limits, and recording basic parameters of the battery;
s4: dismantling and rejecting the battery with the temperature difference of less than 6 ℃ and the pressure difference of less than 30mV, and recording the parameters of the rest retired power battery;
s5: selecting and combining a plurality of retired power batteries according to the maximum continuous charging current of the original AGV battery;
s6: the number h of series connection of the battery cells is greater than the ratio of the original battery voltage to the voltage of the single battery cell; the parallel number k of the battery cells is calculated by the power of the primary battery, the single voltage and the capacity of the single battery cells;
s7: and combining the selected retired power batteries in a k parallel connection and h series connection mode, and placing the combined retired power batteries into an insulated battery box.
2. The method for conducting the gradient utilization of the retired power battery as the AGV battery according to claim 1, wherein the step S2 comprises the steps of:
s21: judging by naked eyes, if the casing of the retired power battery is intact, the surface is smooth and has no deformation, cracks or liquid leakage, entering the next step, and otherwise, removing after disassembly;
s22: testing the OCV value by using a universal meter, if the positive ground is more than 2M omega, the negative ground is more than 2M omega, the positive shell is more than 2M omega, and the negative shell is more than 2M omega, entering the next step, otherwise, removing after disassembling;
s23: testing internal resistance by using an alternating current internal resistance instrument, if R isdch≤2R0dchOtherwise, go to step S3, otherwise, remove it after disassembly.
3. The method for conducting the gradient utilization of the retired power battery as the AGV battery according to claim 2, wherein the step S3 comprises:
s31: standing the retired power battery for 0.5h, then discharging the retired power battery at a constant current, and setting a lower voltage limit according to the characteristics of the battery cell;
s32: standing the retired power battery for 2 hours, then performing constant-current charging, and setting an upper voltage limit according to the characteristics of the battery core;
s33: and (4) discharging at constant current after standing for 2h, setting a lower voltage limit according to the characteristics of the battery cell, and standing for 2 h.
4. The method of claim 3, wherein the basic parameters include capacity, energy, power, total current, total voltage, insulation value, SOC, cell differential pressure, maximum cell voltage, minimum cell voltage, average cell voltage, maximum cell temperature, maximum cell number, minimum cell temperature, average cell temperature, cell voltage, and cell temperature of the battery.
5. The method of claim 4, wherein the primary battery power W1= operating voltage x total capacity, and the echelon battery pack power W2= operating voltage x total capacity = cell voltage x parallel connection k x cell capacity, and the value of the parallel connection number k is calculated by the formula, and the value of k is an integer.
6. The method of claim 5, wherein in step S7, the battery pack is made by a BMS and a fuse in a circuit with a charging/discharging current less than or equal to 100A; and a circuit with the charging and discharging current being more than or equal to 100A is used for manufacturing the battery pack in a BMS (battery management system), fuse, relay and shunt comprehensive protection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110811175.0A CN113471557A (en) | 2021-07-19 | 2021-07-19 | Method for utilizing retired power battery into AGV battery in gradient manner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110811175.0A CN113471557A (en) | 2021-07-19 | 2021-07-19 | Method for utilizing retired power battery into AGV battery in gradient manner |
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| CN113471557A true CN113471557A (en) | 2021-10-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374003A (en) * | 2021-12-13 | 2022-04-19 | 安徽力普拉斯电源技术有限公司 | Method for identifying formation charging micro short circuit in deep cycle battery for two-wheeled vehicle |
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2021
- 2021-07-19 CN CN202110811175.0A patent/CN113471557A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374003A (en) * | 2021-12-13 | 2022-04-19 | 安徽力普拉斯电源技术有限公司 | Method for identifying formation charging micro short circuit in deep cycle battery for two-wheeled vehicle |
| CN114374003B (en) * | 2021-12-13 | 2024-04-19 | 安徽力普拉斯电源技术有限公司 | Method for identifying formation charging micro-short circuit of deep-cycle battery for two-wheeled vehicle |
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Application publication date: 20211001 |