CN109116246B - Lead-acid storage battery abuse overdischarge performance evaluation method and capacity recovery method - Google Patents
Lead-acid storage battery abuse overdischarge performance evaluation method and capacity recovery method Download PDFInfo
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- CN109116246B CN109116246B CN201810795279.5A CN201810795279A CN109116246B CN 109116246 B CN109116246 B CN 109116246B CN 201810795279 A CN201810795279 A CN 201810795279A CN 109116246 B CN109116246 B CN 109116246B
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- capacity
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- storage battery
- overdischarge
- acid storage
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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]
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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
- H01M10/06—Lead-acid accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a method for evaluating abusive overdischarge performance of a lead-acid storage battery, which mainly obtains an abusive overdischarge capacity rate Caod through an abusive overdischarge performance test and obtains an overdischarge capacity decay rate Caoc through a circulating discharge test so as to pre-evaluate the quality and overdischarge capacity of a related design scheme. The invention also discloses a capacity recovery method after the lead-acid storage battery is abused and overdischarged, which activates the built-in active substances through deep discharge so as to promote the capacity recovery of the laggard battery. In general, the quantitative evaluation method is simple, convenient and accurate, has good timeliness, is beneficial to guidance and design, and can obviously reduce the research and development period and cost. The user can optimize and adjust the running efficiency of the matched battery pack in time by applying the invention.
Description
Technical Field
The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to a method for evaluating the abuse and overdischarge performance of a lead-acid storage battery, and a method for recovering the capacity of a backward battery generated by abuse and overdischarge.
Background
The lead-acid storage battery has a bucket effect in the use process, namely, the lagging battery pulls down the performance indexes of other batteries. Because the industry is short of a means for evaluating the lagging battery in advance, particularly for evaluating the misuse and overdischarge of the lead-acid storage battery, a method for recovering the capacity of the lagging battery is not available. Therefore, the battery pack applied in the engineering can not meet the expected performance index, and the technical problems of poor solution and easy initiation of contradiction between supply and demand parties occur frequently. In reality, the cycle life, the over-discharge capacity and the product consistency of the lead-acid storage battery manufactured according to different design schemes have certain differences, and the differences cannot be quantitatively evaluated in the research, development and design stages, and only the manufactured sample can be used for physical detection to obtain relatively reliable data. In the prior art, the object detection is easy to realize, the method is simple and convenient, and the data is accurate, but the verification period is too long, the timeliness is poor, and the method is not beneficial to guiding production. In addition, the lead-acid storage battery can bring trace performance difference due to process errors in the manufacturing process, and the lead-acid storage battery is qualified as long as the performance indexes are not out of tolerance. However, users have over-discharge and under-charge situations during the use process, and such situations are easy to cause lagging batteries. In view of the two situations, it is necessary to research a method for evaluating the overdischarge performance of lead-acid storage batteries and a method for recovering the capacity of lead-acid storage batteries, which is beneficial for manufacturers to develop research and development schemes for comparison and fractionation and quantitative analysis in time. On the other hand, the battery capacity recovery is convenient for users to timely recover the battery capacity, and a good basic condition is created for improving the operation efficiency of the battery.
Disclosure of Invention
The invention mainly aims at the problem that the industry lacks a method for detecting the related performance of a lead-acid storage battery, and provides a method for evaluating the overdischarge performance of lead-acid storage battery abuse, which is simple and convenient, easy to implement and capable of carrying out quantitative analysis. The invention also includes a method for recovering capacity of a lagging battery caused by overdischarge abuse.
The invention achieves the technical aim through the following technical scheme.
The method for evaluating the abuse overdischarge performance of the lead-acid storage battery is improved in that the evaluation is carried out in an environment of 25 +/-2 ℃, and the method comprises the following specific steps:
1.1, according to the conventional configuration, selecting 6 lead-acid storage batteries with the same specification to be connected in series into a group, firstly carrying out I10A is discharged, then 2.35V and 2I current limiting are adopted10Charging for 16 hours;
1.2, from which 1 lead-acid battery can optionally be used alone I10Discharging for 4 hours by the current A, and connecting the overdischarged lag battery with other 5 fully charged lead-acid storage batteries in series to form a storage battery pack;
1.3, storage battery set I10Discharging by the current A until the voltage of 5 fully charged lead-acid storage batteries is reduced to 5 x 1.80V, stopping discharging, and standing for 2 hours;
1.4, 2.35V/battery pack with constant voltage and 2I current limiting10A, continuously charging for 144 hours;
1.5 when the battery set is I10A is putWhen the voltage is up to 6 × 1.80V, carrying out capacity detection, and converting into a capacity value in a reference state at 25 ℃;
1.6, calculating the real discharge capacity and rated capacity C of the storage battery pack10Obtaining the abuse overdischarge capacity rate Caod;
1.7 for storage battery set I10A, discharging, and stopping the voltage to be 6 x 1.4V;
1.8 at constant pressure 6 x 2.35V, current limiting 2I10Under the condition A, the storage battery pack is charged for 36 hours in a connecting way;
1.9, repeating the steps 1.7 and 1.8 for 5 times;
1.10, secondary battery with I10When A discharges to the end voltage of 6 x 1.80V, carrying out capacity detection;
1.11, calculating the ratio of the actual discharge capacity to the rated capacity of the storage battery pack to obtain the cyclic overdischarge capacity decay rate Caoc.
In a method for recovering capacity of a lead acid battery after abuse over-discharge, the improvement comprising the steps of:
2.1 overdischarged laggard cells will be abused with I10A, carrying out deep discharge, wherein the termination voltage is 1.25V;
2.2 at constant pressure 2.35V, current limit 2I10Under the condition of A, continuously charging for 36 hours;
2.3, repeating the steps 2.1 and 2.2 for 3 times;
2.4, with I10And discharging the A to the end voltage of 1.80V, carrying out capacity detection, and calculating the ratio of the actual discharge capacity to the rated capacity to obtain the repaired capacity recovery rate Caor.
Compared with the prior art, the invention has the following positive effects:
1. the method is reasonable, the steps are simple and convenient, and the operability is good;
2. the abuse overdischarge capacity rate and the cycle overdischarge capacity attenuation rate are accurately obtained through testing, and the quantitative pre-evaluation method is high in accuracy and beneficial to timely guidance of design, so that the aim of reducing the research and development period and the cost is fulfilled;
3. the method for rapidly evaluating the over-discharge performance of the lead-acid storage battery and the method for recovering the capacity of the lagging battery are provided for users, and the running efficiency of the matched storage battery can be optimized and adjusted in time.
Detailed Description
The invention is further illustrated by the method for evaluating the abuse and overdischarge performance of lead-acid storage batteries with different design schemes.
Before evaluation, a design scheme A and a design scheme B are selected to prepare samples respectively, the samples in the embodiment are 2V lead-acid storage batteries with the specification of 200AH, the number of the lead-acid storage batteries is 9 respectively, 6 lead-acid storage batteries in each scheme are used for the lead-acid storage battery abuse overdischarge performance evaluation method and the capacity recovery method, and the remaining 3 lead-acid storage batteries in each scheme are used for 100% DOD cycle life test.
The method for evaluating the abuse overdischarge performance of the lead-acid storage battery comprises the following steps of respectively preparing samples by using a design scheme A and a design scheme B, and evaluating the environment at 25 +/-2 ℃, wherein the method comprises the following steps:
1.1, according to the conventional configuration, selecting 6 lead-acid storage batteries with the same specification to be connected in series into a group, firstly carrying out I10A is discharged, then 2.35V and 2I current limiting are adopted10Charging for 16 hours;
1.2, from which 1 lead-acid battery can optionally be used alone I10Discharging for 4 hours by the current A, and connecting the current A with other 5 fully charged lead-acid storage batteries in series to form a storage battery pack;
1.3, storage battery set I10Discharging by the current A until the voltage of 5 fully charged lead-acid storage batteries is reduced to 5 x 1.80V, stopping discharging, and standing for 2 hours;
1.4, 2.35V/battery pack with constant voltage and 2I current limiting10A, continuously charging for 144 hours;
1.5 when the battery set is I10When the A is discharged to the total voltage of 6 x 1.80V, carrying out capacity detection and converting the capacity value into a capacity value in a reference state at 25 ℃;
1.6, calculating the real discharge capacity and rated capacity C of the storage battery pack10Obtaining the abuse overdischarge capacity rate Caod;
1.7 for storage battery set I10A, discharging, and stopping the voltage to be 6 x 1.4V;
1.8 at constant pressure 6 x 2.35V, current limiting 2I10Under the condition A, the storage battery pack is charged for 36 hours in a connecting way;
1.9, repeating the steps 1.7 and 1.8 for 5 times;
1.10, secondary battery with I10When A discharges to the end voltage of 6 x 1.80V, carrying out capacity detection;
1.11, calculating the ratio of the actual discharge capacity to the rated capacity of the storage battery pack to obtain the cyclic overdischarge capacity decay rate Caoc.
The method for recovering the capacity of the lead-acid storage battery after abuse and overdischarge needs to be carried out after the evaluation, and comprises the following specific steps:
2.1 overdischarged laggard cells will be abused with I10A, carrying out deep discharge, wherein the termination voltage is 1.25V;
2.2 at constant pressure 2.35V, current limit 2I10Under the condition of A, continuously charging for 36 hours;
2.3, repeating the steps 2.1 and 2.2 for 3 times;
2.4, with I10And discharging the A to the end voltage of 1.80V, carrying out capacity detection, and calculating the ratio of the actual discharge capacity to the rated capacity to obtain the repaired capacity recovery rate Caor.
After the sample of the design scheme A and the sample of the design scheme B are subjected to the steps, an abuse overdischarge capacity rate Caod, a cycle overdischarge capacity decay rate Caoc and a repaired capacity recovery rate are respectively obtained, and specific data are shown in the following table:
A. sample abuse overdischarge performance evaluation and capacity recovery data comparison table of B design scheme
In order to further verify the similarity of the test result of the invention and the actual situation, 3 samples reserved in the design scheme A and the design scheme B are taken to respectively carry out 100 percent DOD cycle life test, and the specific test conditions and steps are as follows:
firstly, discharging a lead-acid storage battery sample at 20A until the termination voltage is 1.80V;
then, charging was continued for 16 hours under the conditions of constant voltage of 7.05V and current limiting of 40A;
the two steps are repeated until the capacity is less than 80% of the rated capacity.
And (3) testing results:
the sample discharge depth 100% DOD cycle life of the design scheme A is 507 times, the sample discharge depth 100% DOD cycle life of the design scheme B is 302 times, and the sample of the design scheme A is obviously better than the sample of the design scheme B through comparison.
The quantitative evaluation method is simple, convenient and accurate, has good timeliness, and is beneficial to further guiding design, so that the aim of reducing the research and development period and the cost is fulfilled. The invention can recover the capacity of the backward battery generated by abuse and overdischarge, and is beneficial to optimizing and adjusting the running efficiency of the matched battery pack in time.
Claims (2)
1. The method for evaluating the abuse and overdischarge performance of the lead-acid storage battery is characterized in that the evaluation is carried out in an environment of 25 +/-2 ℃, and the method comprises the following specific steps:
1.1, according to the conventional configuration, selecting 6 lead-acid storage batteries with the same specification to be connected in series into a group, firstly carrying out I10A is discharged, then 2.35V and 2I current limiting are adopted10Charging for 16 hours;
1.2, from which 1 lead-acid battery can optionally be used alone I10Discharging for 4 hours by the current A, and connecting the overdischarged lag battery with other 5 fully charged lead-acid storage batteries in series to form a storage battery pack;
1.3, storage battery set I10Discharging by the current A until the voltage of 5 fully charged lead-acid storage batteries is reduced to 5 x 1.80V, stopping discharging, and standing for 2 hours;
1.4, 2.35V/battery pack with constant voltage and 2I current limiting10A, continuously charging for 144 hours;
1.5 when the battery set is I10When the A is discharged to the total voltage of 6 x 1.80V, carrying out capacity detection and converting the capacity value into a capacity value in a reference state at 25 ℃;
1.6, calculating the real discharge capacity of the storage battery packTo rated capacity C10Obtaining the abuse overdischarge capacity rate Caod;
1.7 for storage battery set I10A, discharging, and stopping the voltage to be 6 x 1.4V;
1.8 at constant pressure 6 x 2.35V, current limiting 2I10Under the condition A, the storage battery pack is charged for 36 hours in a connecting way;
1.9, repeating the steps 1.7 and 1.8 for 5 times;
1.10, secondary battery with I10When A discharges to the end voltage of 6 x 1.80V, carrying out capacity detection;
1.11, calculating the ratio of the actual discharge capacity to the rated capacity of the storage battery pack to obtain the cyclic overdischarge capacity decay rate Caoc.
2. A method for recovering the capacity of a lead-acid battery after abuse overdischarge according to claim 1, characterized in that the method comprises the following steps:
2.1 overdischarged laggard cells will be abused with I10A, carrying out deep discharge, wherein the termination voltage is 1.25V;
2.2 at constant pressure 2.35V, current limit 2I10Under the condition of A, continuously charging for 36 hours;
2.3, repeating the steps 2.1 and 2.2 for 3 times;
2.4, with I10And discharging the A to the end voltage of 1.80V, carrying out capacity detection, and calculating the ratio of the actual discharge capacity to the rated capacity to obtain the repaired capacity recovery rate Caor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795279.5A CN109116246B (en) | 2018-07-19 | 2018-07-19 | Lead-acid storage battery abuse overdischarge performance evaluation method and capacity recovery method |
| PCT/CN2018/112341 WO2020015226A1 (en) | 2018-07-19 | 2018-10-29 | Abuse and over-discharge performance evaluation and capacity recovery method for lead-acid battery |
| AU2018432963A AU2018432963A1 (en) | 2018-07-19 | 2018-10-29 | Abuse and over-discharge performance evaluation and capacity recovery method for lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795279.5A CN109116246B (en) | 2018-07-19 | 2018-07-19 | Lead-acid storage battery abuse overdischarge performance evaluation method and capacity recovery method |
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| CN109116246A CN109116246A (en) | 2019-01-01 |
| CN109116246B true CN109116246B (en) | 2020-04-28 |
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| CN201810795279.5A Active CN109116246B (en) | 2018-07-19 | 2018-07-19 | Lead-acid storage battery abuse overdischarge performance evaluation method and capacity recovery method |
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| Country | Link |
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| CN (1) | CN109116246B (en) |
| AU (1) | AU2018432963A1 (en) |
| WO (1) | WO2020015226A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112098862B (en) * | 2020-08-04 | 2023-03-28 | 中汽研汽车检验中心（天津）有限公司 | Method for testing and evaluating overdischarge tolerance of lithium ion battery monomer |
| CN111999671B (en) * | 2020-08-04 | 2023-01-10 | 中汽研汽车检验中心（天津）有限公司 | Lithium ion battery overdischarge excess capacity value calculation method |
| CN113113684B (en) * | 2021-03-30 | 2022-06-10 | 天能电池集团股份有限公司 | Lead storage battery treatment method for improving wet pressure and discharge performance of unit cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011127973A (en) * | 2009-12-16 | 2011-06-30 | Kawasaki Heavy Ind Ltd | State of charge estimation method and device for secondary battery |
| CN105790376B (en) * | 2016-04-28 | 2019-03-05 | 王托 | The Activiation method of overdischarge plumbic acid valve control battery group |
| CN106093787A (en) * | 2016-07-01 | 2016-11-09 | 天能电池集团有限公司 | A kind of battery of electric bicycle deeper cavity life detecting method |
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2018
- 2018-07-19 CN CN201810795279.5A patent/CN109116246B/en active Active
- 2018-10-29 WO PCT/CN2018/112341 patent/WO2020015226A1/en active Application Filing
- 2018-10-29 AU AU2018432963A patent/AU2018432963A1/en not_active Abandoned
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| Publication number | Publication date |
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| CN109116246A (en) | 2019-01-01 |
| AU2018432963A1 (en) | 2020-04-16 |
| WO2020015226A1 (en) | 2020-01-23 |
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