CN100367558C - Method for lengthening hermetic lead accumulator operation life - Google Patents
Method for lengthening hermetic lead accumulator operation life Download PDFInfo
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- CN100367558C CN100367558C CNB2005101117899A CN200510111789A CN100367558C CN 100367558 C CN100367558 C CN 100367558C CN B2005101117899 A CNB2005101117899 A CN B2005101117899A CN 200510111789 A CN200510111789 A CN 200510111789A CN 100367558 C CN100367558 C CN 100367558C
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- lead accumulator
- electrolyte
- polyvinyl alcohol
- capacity
- carboxymethyl cellulose
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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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Abstract
The present invention discloses a method for prolonging the service life of a sealed lead accumulator. Polyvinyl alcohol or polyacrylic salt or carboxymethyl cellulose is added into electrolyte, and/or a carbon granule layer is arranged at the surface of a cathode electrode post, cathode hydrogen overpotential is improved, the cathode activity degradation is prevented, and the electrochemical reactions are easily carried out. In this way, the capacity of a sealed lead accumulator can not be rapidly decreased after the accumulator is used for a long time, and the service life of the sealed lead accumulator is prolonged.
Description
Technical field
The present invention relates to a kind of hermetic lead accumulator method in useful life that prolongs.
Background technology
Hermetic lead accumulator is owing to have the moisturizing of need not, even also there is not advantage such as sulfuric acid electrolyte outflow when falling down to the ground, obtained extensive use on bus, truck and old man or car for disabled persons.Recently various small-sized and large sealing type lead accumulators also are used as uninterrupted power supply (ups) Unity.When hermetic lead accumulator designed and produced, positive electrode capacity was generally less than capacity of negative plates, and positive pole at first is in the state of full charging when so just guaranteeing charging, produces oxygen at positive pole.This oxygen is diffused into negative pole during space by barrier film, at negative terminal surface and hydrogen ion water generation reaction.But existing hermetic lead accumulator, in actual applications, the long-term back negative pole generation sulfation phenomenon of using, cause the capacity of battery terminal negative to descend, even be lower than anodal capacity, when the result causes charging final, produce hydrogen and dehydration at negative pole, battery capacity also decreases, and the battery dehydration causes the reduction of inside battery liquid level of electrolyte, and pole plate is easy to be corroded and causes battery to open circuit.In addition, hydrogen gathers in battery case in a large number, might cause that also battery case breaks.
In order to prolong the life-span of lead accumulator, improve the performance of lead accumulator at present, the method for additive also occurred in lead storage battery electrolytic solution, adding.Cao Wei Huan etc. mention interpolation by cobaltous sulfate, aluminum sulfate, magnesium sulfate, nickelous sulfate, sodium sulphate, the electrolysis additive that distilled water is formed prevents polar plate sulfation [Chinese patent, application number CN90105446.1, publication number CN1049427], Li Ze mentions interpolation by force by phosphoric acid, sodium metaphosphate, additive [the Chinese patent that material such as the concentrated sulfuric acid and cadmium sulfate and distilled water are formulated, application number CN92114499.7, publication number CN1088713], Li Kangzhu use by cobaltous sulfate, magnesium sulfate, ammonium chloride, aluminium chloride and nicotinic acid join the additive [Chinese patent of being formed in 100 parts of distilled water, application number CN00802768.4, publication number CN1337073], but all there is certain limitation, can not carries out practical application widely.
Summary of the invention
The objective of the invention is to solve that hermetic lead accumulator uses dehydration for a long time and the problem that influences useful life.Use the back that the sulfation phenomenon takes place for a long time at negative pole, in the electrolyte of hermetic lead accumulator, add the additive that improves the negative pole hydrogen overpotential, to prevent the sulfation of negative pole, it is too fast to guarantee that long-term use back battery capacity can not descend yet, thereby suppresses because negative pole produces the situation generation that hydrogen makes the battery dehydration.
The method that the present invention is a kind of to prolong hermetic lead accumulator useful life is as follows:
The positive active material of hermetic lead accumulator is a lead peroxide, and negative electrode active material is plumbous, and electrolyte is dilute sulfuric acid, and wherein anodal design capacity is less than capacity of negative plates; Adding concentration in electrolyte is the additive of 0.04wt%～0.2wt%, and additive is polyvinyl alcohol, polyacrylate or carboxymethyl cellulose; The alcoholysis degree of polyvinyl alcohol＜89% wherein, the degree of polymerization＜1800; The molecular weight ranges of polyacrylate is 200-20000; The carboxymethyl cellulose substitution value is about 0.4-1.2, and the degree of polymerization is 200-500; Polyvinyl alcohol, polyacrylate or carboxymethyl cellulose are soluble in water at normal temperatures.
Pass through in sealed lead accumulator electrolyte, to add additives such as polyvinyl alcohol among the present invention, the hydrogen overpotential of its negative pole is improved about 100mV, and has a effect that makes the lead sulfate crystallization granular that negative pole generates along with discharge, the deterioration that has suppressed capacity of negative plates effectively, the long-term state that keeps positive electrode capacity to be lower than capacity of negative plates, make obtain greatly prolonging the useful life of sealing lead accumulator, improved 2-3 doubly.The interpolation concentration of additive in electrolyte is 0.04wt%～0.2wt%, when concentration during less than 0.04wt%, improves the DeGrain of negative pole hydrogen overpotential; When concentration surpassed 0.2%, the viscosity of electrolyte rose and with harmful effects such as foaming;
In order to prevent long-term the use or mal-condition when using lead accumulator down, negative pole is deterioration extremely, additives decompose, the sharply generation of unpredictable event such as rising of gas pressure in the battery case.Being designed to of safety valve is set continuing to continue to use conventional seals type lead accumulator on the battery structure on battery case.
Description of drawings
Fig. 1 is the sectional view of hermetic lead accumulator of the present invention, wherein:
1. battery case 2. anodes 3. battery cathode 4. barrier films
5. electrolyte 6. interfaces 7. negative pole connecting portions, 8. electrolyte upper spaces
9. anodal leading-out terminal 10. negative pole leading-out terminals 11. safety valves
Fig. 2 is 12V, the cycle performance of the sealing lead accumulator of 12Ah
Embodiment
The following examples are to further specify of the present invention, but do not limit the scope of the invention.
Embodiment 1:
To 12V, the hermetic lead accumulator of 12Ah, the polyvinyl alcohol 17-88 (degree of polymerization 1700, alcoholysis degree 88%) of interpolation 0.06wt% in dilute sulfuric acid is as the electrolyte of hermetic lead accumulator.Battery structure as shown in Figure 1, battery case 1 inside disposes a plurality of anodal 2, negative poles 3 and barrier film 4, each negative pole 3 is interconnected in negative pole connecting portion 7, negative terminal 11 is drawn in the outside.In case during the gas pressure abnormal ascending, can discharge in the battery case 1 by safety valve 12.
The 5Amp*2hr discharge, the 2Amp*5hr charging, end of charge voltage is 15.0V, measured result is shown in curve a among Fig. 2.
Embodiment 2:
To 12V, the hermetic lead accumulator of 12Ah, the polyvinyl alcohol 17-88 (degree of polymerization 1700, alcoholysis degree 88%) of interpolation 0.1wt% in dilute sulfuric acid is as the electrolyte of hermetic lead accumulator.Battery structure as shown in Figure 1, battery case 1 inside disposes a plurality of anodal 2, negative poles 3 and barrier film 4, each negative pole 3 is interconnected in negative pole connecting portion 7, negative terminal 11 is drawn in the outside.In case during the gas pressure abnormal ascending, can discharge in the battery case 1 by safety valve 12.Charging/discharging thereof as described in example 1 above, measured result is shown in curve b among Fig. 2.
Embodiment 3:
To 12V, the hermetic lead accumulator of 12Ah, the polyvinyl alcohol 17-88 (degree of polymerization 1700, alcoholysis degree 88%) of interpolation 0.12wt% in dilute sulfuric acid is as the electrolyte of hermetic lead accumulator.Battery structure as shown in Figure 1, battery case 1 inside disposes a plurality of anodal 2, negative poles 3 and barrier film 4, each negative pole 3 is interconnected in negative pole connecting portion 7, negative terminal 11 is drawn in the outside.In case during the gas pressure abnormal ascending, can discharge in the battery case 1 by safety valve 12.Charging/discharging thereof as described in example 1 above, measured result is shown in curve c among Fig. 2.
Comparative example
To 12V, the sealing lead accumulator of 12Ah, no any additives, charging/discharging thereof as described in example 1 above, measured result is shown in curve d among Fig. 2.
From the foregoing description and comparative example as can be seen, after in electrolyte, adding polyvinyl alcohol, polyacrylate or carboxymethyl cellulose, the capacity of hermetic lead accumulator is along with changing of discharging and recharging is less, the hermetic lead accumulator of comparing no any interpolation has obvious effects, make obtain greatly prolonging the useful life of sealing lead accumulator, improved 2-3 doubly.
Claims (1)
1. one kind prolongs the hermetic lead accumulator method in useful life, it is characterized in that this method is as follows:
The positive active material of hermetic lead accumulator is a lead peroxide, and negative electrode active material is plumbous, and electrolyte is dilute sulfuric acid, and wherein anodal design capacity is less than capacity of negative plates; Adding concentration in electrolyte is the additive of 0.04wt%～0.2wt%, and additive is polyvinyl alcohol, polyacrylate or carboxymethyl cellulose; The alcoholysis degree of polyvinyl alcohol＜89% wherein, the degree of polymerization＜1800; The molecular weight ranges of polyacrylate is 200-20000; The carboxymethyl cellulose substitution value is about 0.4-1.2, and the degree of polymerization is 200-500; Polyvinyl alcohol, polyacrylate or carboxymethyl cellulose are soluble in water at normal temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101117899A CN100367558C (en) | 2005-12-22 | 2005-12-22 | Method for lengthening hermetic lead accumulator operation life |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101117899A CN100367558C (en) | 2005-12-22 | 2005-12-22 | Method for lengthening hermetic lead accumulator operation life |
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| CNB200710154580XA Division CN100541876C (en) | 2005-12-22 | 2005-12-22 | A kind of hermetic lead accumulator method in useful life that prolongs |
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| CN1812179A CN1812179A (en) | 2006-08-02 |
| CN100367558C true CN100367558C (en) | 2008-02-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003655B (en) * | 2006-11-23 | 2012-02-01 | 林忠志 | Macromolecule electrolyte of increasing capacity of lead acid battery, and preparation method |
| ES2873096T3 (en) | 2014-06-17 | 2021-11-03 | Ocv Intellectual Capital Llc | Anti-sulfate paste grids for lead-acid batteries |
| ES2861975T3 (en) | 2014-06-17 | 2021-10-06 | Ocv Intellectual Capital Llc | Gluing mat reduces water loss for lead-acid batteries |
| CN107046152A (en) * | 2016-11-11 | 2017-08-15 | 中广核工程有限公司 | Used in nuclear power station lead-acid accumulator and its positive pole anti-corrosion method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369925A (en) * | 2002-03-15 | 2002-09-18 | 牛锡贤 | High-energy accumlator with nano active carbone fibres (CNT) electrode |
| CN1378303A (en) * | 2001-06-13 | 2002-11-06 | 莱州宇德工业科技有限公司 | Lead acid accumulator protective liquid and its producing method and use |
| CN1505186A (en) * | 2002-12-04 | 2004-06-16 | 中国科学院金属研究所 | Lead-acid storage battery having added nano carbonaceous material and method for making same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378303A (en) * | 2001-06-13 | 2002-11-06 | 莱州宇德工业科技有限公司 | Lead acid accumulator protective liquid and its producing method and use |
| CN1369925A (en) * | 2002-03-15 | 2002-09-18 | 牛锡贤 | High-energy accumlator with nano active carbone fibres (CNT) electrode |
| CN1505186A (en) * | 2002-12-04 | 2004-06-16 | 中国科学院金属研究所 | Lead-acid storage battery having added nano carbonaceous material and method for making same |
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Assignee: Hu'nan Fengri Power and Electric Co., Ltd. Assignor: Shanghai Jiao Tong University Contract record no.: 2010430000073 Denomination of invention: Method for prolonging service lifetime of sealed lead accumulator Granted publication date: 20080206 License type: Exclusive License Open date: 20060802 Record date: 20100707 |
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