CN108598602A - A kind of lead-acid accumulator repairs activator and preparation method thereof - Google Patents
A kind of lead-acid accumulator repairs activator and preparation method thereof Download PDFInfo
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- CN108598602A CN108598602A CN201810256520.7A CN201810256520A CN108598602A CN 108598602 A CN108598602 A CN 108598602A CN 201810256520 A CN201810256520 A CN 201810256520A CN 108598602 A CN108598602 A CN 108598602A
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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
- H01M10/4242—Regeneration of electrolyte or reactants
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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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- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
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Abstract
The invention discloses a kind of lead-acid accumulators to repair activator, is made by following raw materials according：Acetylene carbon black, zinc sulfate, sodium sulphate, sulfuric acid solution, nano silver, paratoluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium citrate, potassium dihydrogen phosphate, fumaric acid, ferrocene, titanium dioxide, glycerine, waterglass, pulullan polysaccharide, sodium carbonate, carboxymethyl chitosan, vitamin E, deionized water.The lead-acid accumulator of the present invention, which repairs activator, has the advantages that repair time is shorter, remediation efficiency is high, and it is preferable to the repairing effect for vulcanizing accumulator, solve the problems, such as lead-acid accumulator capacity failure caused by sulfation, performance after battery is repaired is good, improves the service life of battery.
Description
Technical field
The present invention relates to the recovery and reuse technology field of old and useless battery, specifically a kind of lead-acid accumulator repairs activator
And preparation method thereof.
Background technology
Lead-acid accumulator has many advantages, such as that cheap, dependable performance and use temperature range are wide, is widely used in electricity
The all trades and professions such as letter, electric power, finance, automobile, railway, radio and television, solar energy, wind energy, national defence.In particular with automobile and electricity
The fast development of dynamic bicycle trade.Lead-acid battery while a large amount of use, the scrap problem of battery become national governments and
The focal issue that users are concerned about.Western developed country, using and recycling and suffer from stringent system in lead-acid accumulator
Regulation.Government encourages user using the new technology for extending battery, and reparation and the maintenance of lead-acid battery have become every year
The industry of multi-billion dollar, government are supported and protect to it from finance and taxation policy.
In order to ensure the timely of supply of electric power and stablize, many accumulators, which usually do not arrive service life, to be scrapped, and cause
A large amount of wastes of resource.Wherein, the capacity decline caused by the irreversible sulfation of cathode is the main reason for battery is scrapped.Lead
Acid accumulator generates the very low PbSO of solubility in discharge process4, will be constantly precipitated with crystal form after reaching saturation.Just
The PbSO generated in normal discharge process4It is to be evenly distributed on the pole plate of battery with small crystalline particle, when charging can be more
Easily it is reduced to Pb and PbO2.But in use for some time, some PbSO of federation4It cannot be reduced to spongy Pb, this
A little PbSO4Gradually accumulation is grown up, until blocking the micropore of pole plate and partition board, is interfered the infiltration of electrolyte, is increased the internal resistance of cell, carry
High charge voltage, the final charge acceptance for reducing battery, here it is sulfations.If it is higher that there are storage temperatures, use
When the problems such as float charge voltage is too low in the process, initial charge deficiency, frequent undercharge or deep discharge, the sulphur of lead-acid accumulator
Hydrochlorate rate can faster, and when sulfation reaches a certain level, battery can only fail and scrap.Numerous studies confirm that addition adds
It is to slow down degree of sulfation to add agent, improves one of the effective way of charge-discharge performance energy.But existing lead acid storage battery
The repair time that activator is repaired in pond is longer, and remediation efficiency is low, and its repairing effect is bad.Therefore, the present invention provides a kind of
Lead-acid accumulator repairs activator and preparation method thereof.
Invention content
The purpose of the present invention is to provide a kind of lead-acid accumulators to repair activator and preparation method thereof, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of lead-acid accumulator reparation activator, is made by the raw material of following parts by weight：2-8 parts of acetylene carbon black, zinc sulfate 5-
15 parts, 5-10 parts of sodium sulphate, 1-5 parts of sulfuric acid solution, 0.5-2 parts of nano silver, 1-3 parts of paratoluenesulfonic acid sodium salt, polyethyleneglycol first
1-3 parts of ether, 2-5 parts of potassium citrate, 1-4 parts of potassium dihydrogen phosphate, 0.1-1 parts of fumaric acid, 0.5-1 parts of ferrocene, titanium dioxide
0.2-1 parts of titanium, 0.5-2 parts of glycerine, 2-5 parts of waterglass, 1-2 parts of pulullan polysaccharide, 0.2-1 parts of sodium carbonate, carboxymethyl chitosan
0.5-2 parts sugared, 0.1-1 parts of vitamin E, 40-80 parts of deionized water.
As a further solution of the present invention：It is made by the raw material of following parts by weight：6 parts of acetylene carbon black, zinc sulfate 10
Part, 8 parts of sodium sulphate, 2 parts of sulfuric acid solution, 1 part of nano silver, 1.2 parts of paratoluenesulfonic acid sodium salt, 1.6 parts of poly glycol monomethyl ether, lemon
3.4 parts of sour potassium, 3.2 parts of potassium dihydrogen phosphate, 0.5 part of fumaric acid, 0.7 part of ferrocene, 0.5 part of titanium dioxide, glycerine 1
Part, 3 parts of waterglass, 1.2 parts of pulullan polysaccharide, 0.5 part of sodium carbonate, 1 part of carboxymethyl chitosan, 0.4 part of vitamin E, deionization
65 parts of water.
As a further solution of the present invention：The pH of sulfuric acid solution is 5.8-6.5.
A kind of lead-acid accumulator repairs the preparation method of activator, includes the following steps：
（1）By zinc sulfate, sodium sulphate, paratoluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and
Carboxymethyl chitosan is added in deionized water, is stirred 30-45min at 50-65 DEG C, obtains mixture A；
（2）Mixture A, potassium citrate, fumaric acid, ferrocene, sodium carbonate and vitamin E are mixed, 85-105 is warming up to
DEG C, it is stirred 1-2h, is down to room temperature, obtains mixture B；
（3）Sulfuric acid solution, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide are sequentially added in mixture B, then
Mixing 1-2h is stirred at room temperature, suspension is made and repairs activator to get lead-acid accumulator.
As a further solution of the present invention：Step（1）By zinc sulfate, sodium sulphate, paratoluenesulfonic acid sodium salt, polyethyleneglycol
Methyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl chitosan are added in deionized water, are stirred at 55 DEG C
40min obtains mixture A.
As a further solution of the present invention：Step（2）By mixture A, potassium citrate, fumaric acid, ferrocene, carbon
Sour sodium and vitamin E mixing, are warming up to 98 DEG C, are stirred 1.2h, be down to room temperature, obtain mixture B.
As a further solution of the present invention：Step（3）By sulfuric acid solution, acetylene carbon black, pulullan polysaccharide, nano silver and
Titanium dioxide sequentially adds in mixture B, and mixing 1.6h is then stirred at room temperature, suspension is made to get lead-acid accumulator
Repair activator.
Compared with prior art, the beneficial effects of the invention are as follows：
The lead-acid accumulator of the present invention, which repairs activator, has the advantages that repair time is shorter, remediation efficiency is high, and is stored to vulcanization
The repairing effect of battery is preferable, solves the problems, such as that lead-acid accumulator capacity failure caused by sulfation, battery are repaiied
Performance after multiple is good, improves the service life of battery；Preparation method is simple by the present invention, is conducive to promote.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of lead-acid accumulator reparation activator, is made by the raw material of following parts by weight：2 parts of acetylene carbon black, 5 parts of zinc sulfate,
5 parts of sodium sulphate, 1 part of sulfuric acid solution, 0.5 part of nano silver, 1 part of paratoluenesulfonic acid sodium salt, 1 part of poly glycol monomethyl ether, potassium citrate 2
Part, 1 part of potassium dihydrogen phosphate, 0.1 part of fumaric acid, 0.5 part of ferrocene, 0.2 part of titanium dioxide, 0.5 part of glycerine, waterglass
2 parts, 1 part of pulullan polysaccharide, 0.2 part of sodium carbonate, 0.5 part of carboxymethyl chitosan, 0.1 part of vitamin E, 40 parts of deionized water.Sulphur
The pH of acid solution is 5.8.
A kind of lead-acid accumulator repairs the preparation method of activator, includes the following steps：（1）By zinc sulfate, sodium sulphate, right
Deionized water is added in toluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl chitosan
In, it is stirred 30min at 50 DEG C, obtains mixture A；（2）By mixture A, potassium citrate, fumaric acid, ferrocene,
Sodium carbonate and vitamin E mixing, are warming up to 85 DEG C, are stirred 1h, be down to room temperature, obtain mixture B；（3）By sulfuric acid solution,
Acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide sequentially add in mixture B, and mixing 1h is then stirred at room temperature,
Suspension is made and repairs activator to get lead-acid accumulator.
The valve control battery for selecting the quasi- 2V 100Ah scrapped that just stopped transport, after unloading bottom flange, is added the reparation activator,
After carrying out 2 period charging and dischargings with 0.1C, is discharged with 10 hour rates, measure discharge capacity and reach 92Ah.
Embodiment 2
A kind of lead-acid accumulator reparation activator, is made by the raw material of following parts by weight：8 parts of acetylene carbon black, 15 parts of zinc sulfate,
10 parts of sodium sulphate, 5 parts of sulfuric acid solution, 2 parts of nano silver, 3 parts of paratoluenesulfonic acid sodium salt, 3 parts of poly glycol monomethyl ether, potassium citrate 5
Part, 4 parts of potassium dihydrogen phosphate, 1 part of fumaric acid, 1 part of ferrocene, 1 part of titanium dioxide, 2 parts of glycerine, 5 parts of waterglass, Pu Lu
2 parts of blue polysaccharide, 1 part of sodium carbonate, 2 parts of carboxymethyl chitosan, 1 part of vitamin E, 80 parts of deionized water.The pH of sulfuric acid solution is
6.5。
A kind of lead-acid accumulator repairs the preparation method of activator, includes the following steps：（1）By zinc sulfate, sodium sulphate, right
Deionized water is added in toluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl chitosan
In, it is stirred 45min at 65 DEG C, obtains mixture A；（2）By mixture A, potassium citrate, fumaric acid, ferrocene,
Sodium carbonate and vitamin E mixing, are warming up to 105 DEG C, are stirred 2h, be down to room temperature, obtain mixture B；（3）Sulfuric acid is molten
Liquid, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide sequentially add in mixture B, and mixing is then stirred at room temperature
2h is made suspension and repairs activator to get lead-acid accumulator.
The lead-acid accumulator of two new 12V 12Ah is selected, the reparation is added according to the 5% of electrolyte volume in one of them
Activator, after current limliting constant-voltage charge to 14.8V, it is a cycle to be discharged to 10.5V with 2 hour rates, that is, 6.0A, another does not add
Add renovation agent；The accumulator cell charging and discharging cycle life that renovation agent of the present invention is added is 580 times, is not added with the storage of renovation agent of the present invention
The battery charging and discharging ring service life is 268 times.
Embodiment 3
A kind of lead-acid accumulator reparation activator, is made by the raw material of following parts by weight：6 parts of acetylene carbon black, 10 parts of zinc sulfate,
8 parts of sodium sulphate, 2 parts of sulfuric acid solution, 1 part of nano silver, 1.2 parts of paratoluenesulfonic acid sodium salt, 1.6 parts of poly glycol monomethyl ether, citric acid
3.4 parts of potassium, 3.2 parts of potassium dihydrogen phosphate, 0.5 part of fumaric acid, 0.7 part of ferrocene, 0.5 part of titanium dioxide, 1 part of glycerine,
3 parts of waterglass, 1.2 parts of pulullan polysaccharide, 0.5 part of sodium carbonate, 1 part of carboxymethyl chitosan, 0.4 part of vitamin E, deionized water
65 parts.The pH of sulfuric acid solution is 6.2.
A kind of lead-acid accumulator repairs the preparation method of activator, includes the following steps：（1）By zinc sulfate, sodium sulphate, right
Deionized water is added in toluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl chitosan
In, it is stirred 40min at 55 DEG C, obtains mixture A；（2）By mixture A, potassium citrate, fumaric acid, ferrocene,
Sodium carbonate and vitamin E mixing, are warming up to 98 DEG C, are stirred 1.2h, be down to room temperature, obtain mixture B；（3）Sulfuric acid is molten
Liquid, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide sequentially add in mixture B, and mixing is then stirred at room temperature
1.6h is made suspension and repairs activator to get lead-acid accumulator.
The valve control battery for selecting the quasi- 2V 300Ah scrapped that just stopped transport, after unloading bottom flange, is added the reparation activator,
After carrying out the electric discharge of 2 period constant-voltage charges with the voltage of 2.35V, is discharged with 10 hour rates, measure discharge capacity and reach 285Ah.
Embodiment 4
A kind of lead-acid accumulator reparation activator, is made by the raw material of following parts by weight：3.5 parts of acetylene carbon black, zinc sulfate 11
Part, 6.5 parts of sodium sulphate, 4.3 parts of sulfuric acid solution, 0.6 part of nano silver, 2.2 parts of paratoluenesulfonic acid sodium salt, poly glycol monomethyl ether 1.9
Part, 4.2 parts of potassium citrate, 2.7 parts of potassium dihydrogen phosphate, 0.9 part of fumaric acid, 0.6 part of ferrocene, 0.7 part of titanium dioxide, third
1.3 parts of triol, 4.1 parts of waterglass, 1.1 parts of pulullan polysaccharide, 0.7 part of sodium carbonate, 1.3 parts of carboxymethyl chitosan, vitamin E
0.2 part, 75 parts of deionized water.The pH of sulfuric acid solution is 6.
A kind of lead-acid accumulator repairs the preparation method of activator, includes the following steps：（1）By zinc sulfate, sodium sulphate, right
Deionized water is added in toluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl chitosan
In, it is stirred 42min at 52 DEG C, obtains mixture A；（2）By mixture A, potassium citrate, fumaric acid, ferrocene,
Sodium carbonate and vitamin E mixing, are warming up to 88 DEG C, are stirred 1.8h, be down to room temperature, obtain mixture B；（3）Sulfuric acid is molten
Liquid, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide sequentially add in mixture B, and mixing is then stirred at room temperature
1.3h is made suspension and repairs activator to get lead-acid accumulator.
The valve control battery for selecting the quasi- 2V 300Ah scrapped that just stopped transport, after unloading bottom flange, is added the reparation activator,
After carrying out the electric discharge of 2 period constant-voltage charges with the voltage of 2.35V, is discharged with 10 hour rates, measure discharge capacity and reach 276Ah.
The lead-acid accumulator of the present invention, which repairs activator, has the advantages that repair time is shorter, remediation efficiency is high, and to sulphur
The repairing effect for changing accumulator is preferable, solves the problems, such as lead-acid accumulator capacity failure caused by sulfation, electricity
Performance after pond is repaired is good, improves the service life of battery；Preparation method is simple by the present invention, is conducive to promote.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (7)
1. a kind of lead-acid accumulator repairs activator, which is characterized in that be made by the raw material of following parts by weight：Acetylene carbon black 2-
8 parts, 5-15 parts of zinc sulfate, 5-10 parts of sodium sulphate, 1-5 parts of sulfuric acid solution, 0.5-2 parts of nano silver, 1-3 parts of paratoluenesulfonic acid sodium salt,
1-3 parts of poly glycol monomethyl ether, 2-5 parts of potassium citrate, 1-4 parts of potassium dihydrogen phosphate, 0.1-1 parts of fumaric acid, ferrocene
0.5-1 parts, 0.2-1 parts of titanium dioxide, 0.5-2 parts of glycerine, 2-5 parts of waterglass, 1-2 parts of pulullan polysaccharide, sodium carbonate 0.2-1
Part, 0.5-2 parts of carboxymethyl chitosan, 0.1-1 parts of vitamin E, 40-80 parts of deionized water.
2. lead-acid accumulator according to claim 1 repairs activator, which is characterized in that press the raw material of following parts by weight
It is made：6 parts of acetylene carbon black, 10 parts of zinc sulfate, 8 parts of sodium sulphate, 2 parts of sulfuric acid solution, 1 part of nano silver, paratoluenesulfonic acid sodium salt 1.2
Part, 1.6 parts of poly glycol monomethyl ether, 3.4 parts of potassium citrate, 3.2 parts of potassium dihydrogen phosphate, 0.5 part of fumaric acid, ferrocene
0.7 part, 0.5 part of titanium dioxide, 1 part of glycerine, 3 parts of waterglass, 1.2 parts of pulullan polysaccharide, 0.5 part of sodium carbonate, carboxymethyl shell
1 part of glycan, 0.4 part of vitamin E, 65 parts of deionized water.
3. lead-acid accumulator according to claim 1 repairs activator, which is characterized in that the pH of sulfuric acid solution is 5.8-
6.5。
4. a kind of lead-acid accumulator as described in any one of claims 1-3 repairs the preparation method of activator, which is characterized in that packet
Include following steps：
（1）By zinc sulfate, sodium sulphate, paratoluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and
Carboxymethyl chitosan is added in deionized water, is stirred 30-45min at 50-65 DEG C, obtains mixture A；
（2）Mixture A, potassium citrate, fumaric acid, ferrocene, sodium carbonate and vitamin E are mixed, 85-105 is warming up to
DEG C, it is stirred 1-2h, is down to room temperature, obtains mixture B；
（3）Sulfuric acid solution, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide are sequentially added in mixture B, then
Mixing 1-2h is stirred at room temperature, suspension is made and repairs activator to get lead-acid accumulator.
5. lead-acid accumulator according to claim 4 repairs the preparation method of activator, which is characterized in that step（1）It will
Zinc sulfate, sodium sulphate, paratoluenesulfonic acid sodium salt, poly glycol monomethyl ether, potassium dihydrogen phosphate, glycerine, waterglass and carboxymethyl shell
Glycan is added in deionized water, is stirred 40min at 55 DEG C, obtains mixture A.
6. lead-acid accumulator according to claim 4 repairs the preparation method of activator, which is characterized in that step（2）It will
Mixture A, potassium citrate, fumaric acid, ferrocene, sodium carbonate and vitamin E mixing, are warming up to 98 DEG C, are stirred
1.2h is down to room temperature, obtains mixture B.
7. lead-acid accumulator according to claim 4 repairs the preparation method of activator, which is characterized in that step（3）It will
Sulfuric acid solution, acetylene carbon black, pulullan polysaccharide, nano silver and titanium dioxide sequentially add in mixture B, then stir at room temperature
Mixing 1.6h is mixed, suspension is made and repairs activator to get lead-acid accumulator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830337 | 2017-09-15 | ||
| CN2017108303379 | 2017-09-15 |
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| Publication Number | Publication Date |
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| CN108598602A true CN108598602A (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810256520.7A Withdrawn CN108598602A (en) | 2017-09-15 | 2018-03-27 | A kind of lead-acid accumulator repairs activator and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048848A (en) * | 2019-11-27 | 2020-04-21 | 安徽理士电源技术有限公司 | Lead-acid storage battery activating liquid and preparation method thereof |
| CN111816940A (en) * | 2020-07-17 | 2020-10-23 | 福建煜雄科技有限公司 | Storage battery nano regeneration repairing agent and preparation method thereof |
-
2018
- 2018-03-27 CN CN201810256520.7A patent/CN108598602A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048848A (en) * | 2019-11-27 | 2020-04-21 | 安徽理士电源技术有限公司 | Lead-acid storage battery activating liquid and preparation method thereof |
| CN111048848B (en) * | 2019-11-27 | 2023-05-23 | 安徽理士电源技术有限公司 | Lead-acid storage battery activating liquid and preparation method thereof |
| CN111816940A (en) * | 2020-07-17 | 2020-10-23 | 福建煜雄科技有限公司 | Storage battery nano regeneration repairing agent and preparation method thereof |
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Application publication date: 20180928 |
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