CN111600079A - Method for manufacturing storage battery - Google Patents
Method for manufacturing storage battery Download PDFInfo
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- CN111600079A CN111600079A CN202010059588.3A CN202010059588A CN111600079A CN 111600079 A CN111600079 A CN 111600079A CN 202010059588 A CN202010059588 A CN 202010059588A CN 111600079 A CN111600079 A CN 111600079A
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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
- H01M10/12—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
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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
- 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
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a method for manufacturing a storage battery, which comprises the following steps: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery. The manufacturing method of the invention can prolong the cycle life of the lead-acid storage battery and improve the formation efficiency.
Description
Technical Field
The invention relates to the field of storage batteries, in particular to a manufacturing method of a storage battery.
Background
At present, the lead-acid storage battery needs to be formed in the manufacturing process, because the cell space of the battery is small, in order to ensure enough acid amount for formation, no matter how many times of acid addition is adopted to complete formation, a step of adding high-density acid liquor for liquid-enriched formation is needed, the high-density acid liquor is added as a formation medium to complete the liquid-enriched formation, white spots are easily generated on the surface of a polar plate, the AbO2 conversion rate is low, the cycle life of the battery is short, in addition, the rich-liquid formation is adopted, the formation efficiency is low, the time consumption is long, the energy consumption is large, and the like.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for manufacturing a storage battery, which comprises the following steps: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery.
Further, after step 1 is completed, step 2 is further included: and adding a second density sulfuric acid solution into the completely formed lead-acid storage battery, and electrifying, wherein the second density is higher than the first density.
Further, the second density is between 1.25 and 1.6g/cm 3.
The manufacturing method of the invention can prolong the cycle life of the lead-acid storage battery and improve the formation efficiency.
Drawings
FIG. 1 is a graph showing cycle life curves of examples 1 to 4 of the present invention and comparative example 1.
Detailed Description
The invention is further described with reference to specific examples.
The manufacturing method of the storage battery comprises the following steps: step 1, adding a sulfuric acid solution with a first density into a lead-acid storage battery to be formed, wherein the first density is preferably 1.04g/cm 3-1.28 g/cm3, and selecting a proper density sulfuric acid solution according to the requirements of field actual conditions on a production field, for example, adding a sulfuric acid solution with a density of 1.05-1.15 g/cm3 to obtain a battery with relatively high service life requirement and relatively low capacity requirement after formation is finished; the method comprises the steps of obtaining a battery with relatively low service life requirement and relatively high capacity requirement after formation is finished, adding 1.16-1.28 g/cm3 sulfuric acid solution, wherein the volume of the added sulfuric acid solution can be 70% -110%, preferably 70% -99% of the saturated acid absorption amount of a lead storage battery partition plate, and when the acid absorption amount in the formation process is lower than 100%, namely the acid absorption amount of the lead storage battery partition plate is in an unsaturated state, the battery enters a barren solution state, an oxygen composite channel is opened, and oxygen circulation starts, so that the formation efficiency can be greatly improved, water loss is reduced, electric energy is saved, the formation time is shortened, and the production efficiency is improved; step 2, electrifying to complete formation; in the formation process, the sulfuric acid solution with the first density is used as a medium to participate in the formation reaction, and after the formation is completed, namely after the basic lead sulfate and the lead oxide are converted, the battery with the formation completed has a longer service life; and 3, adding a sulfuric acid solution with a second density into the battery after the formation is finished, wherein the second density is preferably 1.25-1.6 g/cm3(25 ℃), because the capacity of the sulfuric acid solution with the first density after the formation is low, in order to achieve the required battery capacity, the density of the sulfuric acid solution with the second density is required to be higher than that of the sulfuric acid solution with the first density, and the sulfuric acid solution with the second density is used for mixing with the acid after the formation of the battery so as to be regulated into the actually required sulfuric acid with a specific concentration. And 4, finishing the formation, and extracting free acid if the battery saturation is higher than 100%. The first addition of the low-density sulfuric acid solution can be 1 addition of the low-density sulfuric acid solution or multiple additions of the low-density sulfuric acid solution, and when the low-density sulfuric acid solution is added multiple times, the volume of the low-density sulfuric acid solution added at the next time is preferably larger than that of the low-density sulfuric acid solution added at the previous time. The second addition of the high-density sulfuric acid solution can be 1 addition of the high-density sulfuric acid solution or multiple additions of the high-density sulfuric acid solution, and when the high-density sulfuric acid solution is added multiple times, the volume of the high-density sulfuric acid solution added at the next time is preferably smaller than that of the high-density sulfuric acid solution added at the previous time.
Example 1
The semi-finished product of the battery with 6-DZF-20 glue sealed off line is taken, the method is adopted for acid addition and formation, and the sample preparation process is as follows:
1) adding acid for the first time, adding a sulfuric acid solution with the density of 1.06g/cm3 into the lead storage battery to be added, wherein the acid volume is 140ml, the saturated acid absorption amount of a partition plate is about 82 percent, and adding acid by using a vacuum acid adding machine.
2) And (3) placing the battery subjected to the first acid adding in a water bath, connecting a charging wire clamp, starting a charger, and performing the process according to the process in the table 1.
TABLE 16-DZF-20 Process
| Step (ii) of | Means for | Current (A) | Time (h) | Electric quantity (Ah) |
| 1 | Charging of electricity | 0.4 | 0.5 | 0.2 |
| 2 | Charging of electricity | 0.8 | 0.5 | 0.4 |
| 3 | Charging of electricity | 1.6 | 0.5 | 0.8 |
| 4 | Charging of electricity | 3 | 0.5 | 1.5 |
| 5 | Charging of electricity | 3.5 | 0.875 | 3.0625 |
| 6 | Charging of electricity | 4 | 14 | 56 |
| 7 | Charging of electricity | 3 | 2.88 | 8.64 |
| 8 | Charging of electricity | 6.3 | 8.94 | 56.322 |
| 9 | Standing still | Standing for 1 |
1 | |
| 10 | Charging of electricity | 5.7 | 2.2 | 12.54 |
| 11 | Standing still | Standing for 1 |
1 | |
| 12 | Charging of electricity | 5.1 | 2.5 | 12.75 |
3) And (5) when the formation is finished and the charge amount reaches 126Ah, completely forming, namely finishing the conversion of the basic lead sulfate and the lead oxide.
4) And (3) adding the blending acid, adding the acid by using a vacuum acid adding machine, wherein the density of the blending acid is 1.60g/cm3, and after the addition of 68ml of the blending acid is finished, vacuumizing the battery once to ensure that the electrolyte enters the battery, and continuously operating according to the program in the table 1.
5) After the program operation is finished, continuously charging for 1.5-2 hours at the current of 0.55A, completely pumping out residual acid in a charging state, stopping the machine, taking the machine off the line, cleaning the battery, covering a safety valve rubber cap, and covering a cover plate to obtain a finished product battery.
Example 2
The semi-finished product of the battery with 6-DZF-20 glue sealed off line is taken, the method is adopted for acid addition and formation, and the sample preparation process is as follows:
1) adding acid for the first time, adding sulfuric acid solution with the density of 1.17g/cm3 into the lead storage battery to be added, adding the acid with the volume of 145ml and the acid absorption amount of about 86.34% of the saturated acid absorption amount of a partition plate, and adding the acid by using a vacuum acid adding machine.
2) And (3) placing the battery subjected to the first acid addition in a water bath, connecting a charging wire clamp, starting a charger, and performing the process according to the process 1 in the table.
3) And (5) when the formation is finished and the charging amount reaches 126Ah, the formation is finished, namely the basic lead sulfate and the lead oxide are converted.
4) And (3) adding the blending acid, adding the acid by using a vacuum acid adding machine, wherein the density of the blending acid is 1.55g/cm3, and after the addition of 50ml of the blending acid is finished, vacuumizing the battery once to ensure that the electrolyte enters the battery, and continuously operating according to the program in the table 1.
5) After the program operation is finished, continuously charging for 1.5-2 hours at the current of 0.55A, completely pumping out residual acid in a charging state, stopping the machine, taking the machine off the line, cleaning the battery, covering a safety valve rubber cap, and covering a cover plate to obtain a finished product battery.
Example 3
The semi-finished product of the battery with 6-DZF-20 glue sealed off line is taken, the method is adopted for acid addition and formation, and the sample preparation process is as follows:
1) adding acid for the first time, adding sulfuric acid solution with the density of 1.28g/cm3 into the lead storage battery to be added, wherein the acid volume is 155ml, the saturated acid absorption amount of a partition plate is about 95.4%, and adding acid by using a vacuum acid adding machine.
2) And (3) placing the battery subjected to the first acid adding in a water bath, connecting a charging wire clamp, starting a charger, and performing the process according to the process in the table 1.
3) And (5) when the formation is finished and the charging amount reaches 126Ah, the formation is finished, namely the basic lead sulfate and the lead oxide are converted.
4) And (3) adding the blending acid, adding the acid by using a vacuum acid adding machine, wherein the density of the blending acid is 1.28g/cm3, and after the addition of 35ml of the blending acid is finished, vacuumizing the battery once to ensure that the electrolyte enters the battery, and continuously operating according to the program in the table 1.
5) After the program operation is finished, continuously charging for 1.5-2 hours at the current of 0.55A, checking whether residual acid exists in each cell under the charging state, directly stopping the machine and taking off the line if the residual acid does not exist, cleaning the battery, covering a safety valve rubber cap, and covering a cover plate to obtain a finished product battery.
Comparative example 1
Taking a semi-finished product of the 6-DZF-20 rubber-sealed off-line battery, adding acid and forming according to a conventional production method, wherein the sample preparation process comprises the following steps:
1) adding sulfuric acid solution with the density of 1.26g/cm3 into a lead storage battery to be added with acid by adopting one-time acid adding, wherein the acid adding volume is 232ml, and adding acid by adopting a vacuum acid adding machine.
2) And (3) placing the battery after acid addition in a water bath, connecting a charging wire clamp, starting a charger, and forming according to the process shown in the table 2, wherein the battery is in a liquid-rich state in the whole forming process.
TABLE 26-DZF-20 Normal formation Process
3) After formation is finished, charging is continued for 1.5-2 hours at the current of 0.45A, residual acid is pumped out in a charging state, the machine is stopped, the battery is taken off line, the battery is cleaned, a safety valve rubber cap is covered, and a cover plate is covered to obtain a finished battery.
Example 5
Table 3 summarizes the time-consuming and formation results of the processes of examples 1 to 4 and comparative example 1
TABLE 3 comparison of formation efficiency of examples 1-4 with that of comparative example 1
As can be seen from the data in the above table, the PbO2 content in examples 1 to 4 is substantially the same as that in comparative example 1, which indicates that the conversion rate of the active material is the same, but the total electric quantity of formation and the total time of formation are obviously shorter than that in comparative example 1, which indicates that the formation efficiency is obviously improved by using the technology of the present invention. Meanwhile, the water loss of the examples 1-4 is obviously lower than that of the comparative example 1, which shows that the formation water loss rate of the technology is obviously better than that of the conventional process.
Example 6
The cycle life tests of the finished batteries of the embodiment 1-4 and the comparative example 1 were carried out according to 4 batteries/group.
The cycle life testing method comprises the following steps:
discharging: discharging 10A to 42V;
charging: when the constant voltage is 59.2V, the current is limited by 3.5A and the charging is carried out until the current is less than or equal to 0.5A, the constant voltage charging is changed to 55.2V for 3 hours;
and thirdly, circulating the first step and the second step until the capacity is lower than 70 percent of the rated capacity for three times, and counting the circulation times for the three times.
The test results are shown in fig. 1.
As can be seen from the data in FIG. 1, the cycle life of examples 1-4 using the technology of the present invention is significantly better than that of comparative example 1, and shows a significant rule, the higher the first formation acid density of examples 1-4, the shorter the life, but all better than that of comparative example.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (3)
1. A method for manufacturing a lead-acid battery, characterized by comprising the steps of: step 1: adding a first-density sulfuric acid solution into a lead-acid storage battery to be formed, wherein the first density is between 1.04g/cm3 and 1.28g/cm3, and electrifying to completely form the lead-acid storage battery.
2. The method for manufacturing a lead-acid storage battery according to claim 1, wherein after step 1 is completed, the method further comprises step 2: and adding a second density sulfuric acid solution into the completely formed lead-acid storage battery, and electrifying, wherein the second density is higher than the first density.
3. The method of claim 2, wherein the second density is between 1.25 and 1.6g/cm 3.
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| CN202010059588.3A CN111600079A (en) | 2020-01-19 | 2020-01-19 | Method for manufacturing storage battery |
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| CN202010059588.3A CN111600079A (en) | 2020-01-19 | 2020-01-19 | Method for manufacturing storage battery |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002216839A (en) * | 2001-01-17 | 2002-08-02 | Furukawa Battery Co Ltd:The | Battery container chemical treatment method of lead storage battery |
| CN107666012A (en) * | 2017-09-11 | 2018-02-06 | 上海鸣与信息科技发展有限公司 | A kind of secondary cell electrolyte and preparation method thereof |
| CN107681204A (en) * | 2017-09-01 | 2018-02-09 | 超威电源有限公司 | The chemical synthesis technology of the battery prepared using recovery lead powder |
| CN109148815A (en) * | 2018-07-18 | 2019-01-04 | 天能电池集团有限公司 | A kind of long-life lead storage battery acid adding chemical synthesizing method |
| CN110336086A (en) * | 2019-06-05 | 2019-10-15 | 天能电池集团股份有限公司 | A kind of pregnant solution type lead storage battery chemical synthesis technology and lead storage battery |
-
2020
- 2020-01-19 CN CN202010059588.3A patent/CN111600079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002216839A (en) * | 2001-01-17 | 2002-08-02 | Furukawa Battery Co Ltd:The | Battery container chemical treatment method of lead storage battery |
| CN107681204A (en) * | 2017-09-01 | 2018-02-09 | 超威电源有限公司 | The chemical synthesis technology of the battery prepared using recovery lead powder |
| CN107666012A (en) * | 2017-09-11 | 2018-02-06 | 上海鸣与信息科技发展有限公司 | A kind of secondary cell electrolyte and preparation method thereof |
| CN109148815A (en) * | 2018-07-18 | 2019-01-04 | 天能电池集团有限公司 | A kind of long-life lead storage battery acid adding chemical synthesizing method |
| CN110336086A (en) * | 2019-06-05 | 2019-10-15 | 天能电池集团股份有限公司 | A kind of pregnant solution type lead storage battery chemical synthesis technology and lead storage battery |
Non-Patent Citations (1)
| Title |
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| 托马斯 B 雷迪: "《电池手册 第4版》", 31 March 2013, 化学工业出版社 * |
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Application publication date: 20200828 |