CN111725580B - Returned battery processing method - Google Patents
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- CN111725580B CN111725580B CN202010587052.9A CN202010587052A CN111725580B CN 111725580 B CN111725580 B CN 111725580B CN 202010587052 A CN202010587052 A CN 202010587052A CN 111725580 B CN111725580 B CN 111725580B
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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
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
-
- 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a returned battery processing method, which comprises the following steps: discharging the battery, and measuring the return voltage of the battery; dividing the battery into two types according to the open circuit voltage of the battery, dividing each type of battery into three types according to the date of delivery, and performing corresponding treatment measures on each type of battery according to the return voltage; sorting returned batteries according to the voltage rise, and selecting scrapped batteries first, so that the processing flow is simplified, and meanwhile, the batteries can be well and accurately judged; the method is quick and simple in processing, unqualified products can be quickly removed, batteries with unqualified relative capacity can be quickly selected, the batteries can be removed without participating in comprehensive detection, qualified batteries are initially selected for capacity detection, and qualified batteries are used as service batteries.
Description
Technical Field
The invention relates to a waste battery recycling detection processing method, in particular to a returned battery processing method.
Background
The battery is taken off the wire clamp after discharging to 10.5V, the battery is static for 10-20min, the open-circuit voltage quickly rises to a relatively stable value, the voltage is called 'return stable voltage', in the process of processing the returned batteries, the conventional processing is time-consuming, labor-consuming and electricity-consuming due to the complex process, and if the return stable voltage is fully utilized in the processing of the returned batteries, the processing of the returned batteries is greatly facilitated.
The returned batteries are divided into two states of waiting for electricity and power shortage, each state is divided into three processing modes of 0-4 months, 5-8 months and 9-12 months, the power shortage state and the power shortage state are directly discharged by a single discharging instrument, the return stable voltage is recorded after the discharge is finished, and classification processing is carried out according to the return stable voltage.
Disclosure of Invention
The invention aims to solve the technical problem of providing a returned battery processing method capable of quickly removing unqualified products.
In order to solve the technical problems, the technical scheme of the invention is as follows: a returned battery processing method comprises the following steps:
classifying according to the open-circuit voltage of the batteries, wherein the batteries with the open-circuit voltage larger than 12.80V are of type A, and the batteries with the open-circuit voltage smaller than or equal to 12.80V are of type B;
step two, discharging the battery by 10A, stopping the voltage by 10.5V, and measuring the return stable voltage of the battery after discharging for 10-20 min;
step three, dividing the A-type batteries into three types according to the delivery date, wherein the A1 type is used for 0 to 4 months, the A2 type is used for 5 to 8 months, and the A3 type is used for 9 to 12 months;
fourthly, for the A1 batteries, if the return stable voltage is greater than 11.85V, the batteries are discarded, and if the return stable voltage is less than or equal to 11.85V, the batteries are charged and discharged on the computer;
for the A2 battery, if the return stable voltage is more than 12V, the battery is discarded, and if the return stable voltage is less than or equal to 12V, the battery is charged and discharged on the machine;
for A3 batteries, if the return stable voltage is more than 11.85V, discarding, if the return stable voltage is less than or equal to 11.85V, raising the cover plate, performing diluted acid supplement treatment, and performing on-machine charging and discharging treatment;
step five, dividing the B-type batteries into three types according to the delivery date, wherein the B1 types are used for 0 to 4 months, the B2 types are used for 5 to 8 months, and the B3 types are used for 9 to 12 months;
sixthly, for the B1 batteries, if the regulated voltage is greater than 12V or less than 10.5V, discarding the batteries, and if the regulated voltage is greater than or equal to 10.5V and less than or equal to 12V, performing on-machine charging and discharging;
for B2 batteries, if the return stable voltage is more than 12.2V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12.2V, the batteries are charged and discharged on the machine;
for B3 batteries, if the return stable voltage is more than 12V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12V, the batteries are subjected to on-machine charging and discharging after the cover plate is tilted and diluted acid is supplemented.
As a preferable technical scheme, in the fourth step and the sixth step, the dilute acid comprises 7% -9% of sulfuric acid and 0.04% -0.06% of ZnSO40.04 to 0.06 percent of SiO2And 90.88 to 92.92 percent of water.
As a preferable technical scheme, the dilute acid comprises 8% of sulfuric acid and 0.05% of ZnSO40.05% SiO2And 91.9% water.
Due to the adoption of the technical scheme, the returned battery processing method comprises the following steps: classifying according to the open-circuit voltage of the batteries, wherein the batteries with the open-circuit voltage larger than 12.80V are of type A, and the batteries with the open-circuit voltage smaller than or equal to 12.80V are of type B; step two, discharging the battery by 10A, stopping the voltage by 10.5V, and measuring the return stable voltage of the battery after discharging for 10-20 min; step three, dividing the A-type batteries into three types according to the delivery date, wherein the A1 type is used for 0 to 4 months, the A2 type is used for 5 to 8 months, and the A3 type is used for 9 to 12 months; fourthly, for the A1 batteries, if the return stable voltage is greater than 11.85V, the batteries are discarded, and if the return stable voltage is less than or equal to 11.85V, the batteries are charged and discharged on the computer; for the A2 battery, if the return stable voltage is more than 12V, the battery is discarded, and if the return stable voltage is less than or equal to 12V, the battery is charged and discharged on the machine; for A3 batteries, if the return stable voltage is more than 11.85V, discarding, if the return stable voltage is less than or equal to 11.85V, raising the cover plate, performing diluted acid supplement treatment, and performing on-machine charging and discharging treatment; step five, dividing the B-type batteries into three types according to the delivery date, wherein the B1 types are used for 0 to 4 months, the B2 types are used for 5 to 8 months, and the B3 types are used for 9 to 12 months; sixthly, for the B1 batteries, if the regulated voltage is greater than 12V or less than 10.5V, discarding the batteries, and if the regulated voltage is greater than or equal to 10.5V and less than or equal to 12V, performing on-machine charging and discharging; for B2 batteries, if the return stable voltage is more than 12.2V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12.2V, the batteries are charged and discharged on the machine; for B3 batteries, if the return stable voltage is more than 12V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12V, the batteries are subjected to on-machine charging and discharging after the cover plate is tilted and diluted acid is supplemented; sorting returned batteries according to the voltage rise, and selecting scrapped batteries first, so that the processing flow is simplified, and meanwhile, the batteries can be well and accurately judged; the method is quick and simple in processing, unqualified products can be quickly removed, batteries with unqualified relative capacity can be quickly selected, the batteries can be removed without participating in comprehensive detection, qualified batteries are initially selected for capacity detection, and qualified batteries are used as service batteries.
Detailed Description
The invention is further illustrated by the following examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the description is illustrative in nature and not intended to limit the scope of the claims.
A returned battery processing method comprises the following steps:
classifying according to the open-circuit voltage of the batteries, wherein the batteries with the open-circuit voltage larger than 12.80V are of type A, and the batteries with the open-circuit voltage smaller than or equal to 12.80V are of type B;
step two, discharging the battery by 10A, stopping the voltage by 10.5V, and measuring the return stable voltage of the battery after discharging for 10-20 min;
step three, dividing the A-type batteries into three types according to the delivery date, wherein the A1 type is used for 0 to 4 months, the A2 type is used for 5 to 8 months, and the A3 type is used for 9 to 12 months;
fourthly, for the A1 batteries, if the return stable voltage is greater than 11.85V, the batteries are discarded, and if the return stable voltage is less than or equal to 11.85V, the batteries are charged and discharged on the computer;
for the A2 battery, if the return stable voltage is more than 12V, the battery is discarded, and if the return stable voltage is less than or equal to 12V, the battery is charged and discharged on the machine;
for A3 batteries, if the return stable voltage is more than 11.85V, discarding, if the return stable voltage is less than or equal to 11.85V, raising the cover plate, performing diluted acid supplement treatment, and performing on-machine charging and discharging treatment;
step five, dividing the B-type batteries into three types according to the delivery date, wherein the B1 types are used for 0 to 4 months, the B2 types are used for 5 to 8 months, and the B3 types are used for 9 to 12 months;
sixthly, for the B1 batteries, if the regulated voltage is greater than 12V or less than 10.5V, discarding the batteries, and if the regulated voltage is greater than or equal to 10.5V and less than or equal to 12V, performing on-machine charging and discharging;
for B2 batteries, if the return stable voltage is more than 12.2V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12.2V, the batteries are charged and discharged on the machine;
for B3 batteries, if the return stable voltage is more than 12V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12V, the batteries are subjected to on-machine charging and discharging after the cover plate is tilted and diluted acid is supplemented.
In the fourth step and the sixth step, the dilute acid comprises 7 to 9 percent of sulfuric acid and 0.04 to 0.06 percent of ZnSO40.04 to 0.06 percent of SiO2And 90.88 to 92.92 percent of water. Preferably, the dilute acid comprises 8% sulfuric acid, 0.05% ZnSO40.05% SiO2And 91.9% water.
The returned batteries with the open-circuit voltage of more than 12.80V are processed:
processing returned batteries with the open-circuit voltage of the batteries less than or equal to 12.80V: (long-term power shortage, the sulfation surface forms a protective layer which is not beneficial to conversion, and the voltage stabilizing exists in a virtual high condition)
Service battery factory capacity enterprise internal control standard: the battery capacity (2 hour rate) is more than or equal to 105 min; the service battery life cycle (GB/T22199.1-2017, 100% DOD) enterprise internal control standard is more than or equal to 125 times.
Test results comparative data:
1. capacity check (2 hour rate) comparison:
taking 6-DZF-20 batteries as a case, making a voltage stabilizing mark after discharging, selecting 100 batteries in different categories, recharging, detecting the discharge capacity, and obtaining the following results:
1.1, the open circuit voltage of the battery is more than 12.80V:
1.2, the open circuit voltage of the battery is less than or equal to 12.80V:
2. the performance of the detection cycle (100% DOD) is compared based on the GB/T22199.1-2017 standard:
the open circuit voltage of the battery is more than 12.80V:
the open circuit voltage of the battery is less than or equal to 12.80V: (long-term power shortage, the sulfation surface forms a protective layer which is not beneficial to conversion, and the voltage stabilizing exists in a virtual high condition)
It can be seen from the experimental data in the above table that the method can completely meet the requirement of service battery result judgment by 100%, the battery above 105min is the capacity standard required by the service battery, and the method has the following advantages by analyzing the data of each group:
1. the method is convenient and quick;
2. the accuracy is high, the operation of the battery is convenient for 0-4 months and 5-8 months, the appearance treatment is directly carried out after the capacity detection is qualified, and the delivery is carried out after the capacity detection is qualified;
3. after the battery is qualified in the detection of cover plate tilting, acid supplementing and charging and discharging capacity for 9-12 months, appearance treatment is carried out, and delivery is carried out after the battery is qualified, wherein dilute acid (the sulfuric acid content is 8%, the ZnSO4 content is 0.05%, and the SiO2 content is 0.05%) which has certain treatment advantages on sulfation and delamination is added, so that the recovery of active substances in the battery is facilitated.
In each case, 2 groups of 6-DZF-20 batteries are taken to perform life cycle detection (100% DOD) on the basis of the GB/T22199.1-2017 standard, the cycle life can reach more than 170 times, and the requirement (more than or equal to 125 times) for performance of the service batteries is well met.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A returned battery processing method, characterized by comprising the steps of:
classifying according to the open-circuit voltage of the batteries, wherein the batteries with the open-circuit voltage larger than 12.80V are of type A, and the batteries with the open-circuit voltage smaller than or equal to 12.80V are of type B;
step two, discharging the battery by 10A, stopping the voltage by 10.5V, and measuring the return stable voltage of the battery after discharging for 10-20 min;
step three, dividing the A-type batteries into three types according to the delivery date, wherein the A1 type is used for 0 to 4 months, the A2 type is used for 5 to 8 months, and the A3 type is used for 9 to 12 months;
fourthly, for the A1 batteries, if the return stable voltage is greater than 11.85V, the batteries are discarded, and if the return stable voltage is less than or equal to 11.85V, the batteries are charged and discharged on the computer;
for the A2 battery, if the return stable voltage is more than 12V, the battery is discarded, and if the return stable voltage is less than or equal to 12V, the battery is charged and discharged on the machine;
for A3 batteries, if the return stable voltage is more than 11.85V, discarding, if the return stable voltage is less than or equal to 11.85V, raising the cover plate, performing diluted acid supplement treatment, and performing on-machine charging and discharging treatment;
step five, dividing the B-type batteries into three types according to the delivery date, wherein the B1 types are used for 0 to 4 months, the B2 types are used for 5 to 8 months, and the B3 types are used for 9 to 12 months;
sixthly, for the B1 batteries, if the regulated voltage is greater than 12V or less than 10.5V, discarding the batteries, and if the regulated voltage is greater than or equal to 10.5V and less than or equal to 12V, performing on-machine charging and discharging;
for B2 batteries, if the return stable voltage is more than 12.2V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12.2V, the batteries are charged and discharged on the machine;
for B3 batteries, if the return stable voltage is more than 12V or less than 10.5V, the batteries are discarded, and if the return stable voltage is more than or equal to 10.5V and less than or equal to 12V, the batteries are subjected to on-machine charging and discharging after the cover plate is tilted and diluted acid is supplemented.
2. The method of processing a returned battery according to claim 1, wherein in the fourth and sixth steps, the dilute acid comprises 7% to 9% sulfuric acid, 0.04% to 0.06% ZnSO40.04 to 0.06 percent of SiO2And 90.88 to 92.92 percent of water.
3. The method of claim 2, wherein the dilute acid comprises 8% sulfuric acid, 0.05% ZnSO40.05% SiO2And 91.9% water.
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| CN202010587052.9A CN111725580B (en) | 2020-06-24 | 2020-06-24 | Returned battery processing method |
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