CN113270650A - Open-circuit voltage control method for lead-acid storage battery - Google Patents

Open-circuit voltage control method for lead-acid storage battery Download PDF

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Publication number
CN113270650A
CN113270650A CN202110307516.0A CN202110307516A CN113270650A CN 113270650 A CN113270650 A CN 113270650A CN 202110307516 A CN202110307516 A CN 202110307516A CN 113270650 A CN113270650 A CN 113270650A
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sulfuric acid
mass
pure sulfuric
determining
acid
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CN202110307516.0A
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Inventor
程先清
崔辉
王成彬
张凯强
李振华
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Anhui Uplus Energy Battery Technology Co ltd
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Anhui Uplus Energy Battery Technology Co ltd
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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
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • H01M10/0568—Liquid materials characterised by the solutes
    • 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
    • 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
    • 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 & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The open-circuit voltage control method of the lead-acid storage battery comprises the following steps of S1, determining the mass ratio of pure sulfuric acid in lead plaster: s2, determining the mass of pure sulfuric acid in the single polar plate: s3, total mass of pure sulfuric acid of the pole plate in the unit cell: s4, the mass of the pure sulfuric acid in the single lattice acid solution is as follows: s5, determining electrolyte density rho: s6, correcting the voltage V of the single cellSheet(ii) a The method carries out formula calculation on the pure sulfuric acid content in the electrolyte inside the battery, calculates the current process value, and achieves the purpose that the pure sulfuric acid content in the electrolyte system is controlled within a certain range and an expected voltage value is obtained nearly by supplementing high or low content of dilute sulfuric acid in the formation process when the open-circuit voltage is not within an expected range; can be calculated in advance, avoid adjustment after the fact, and has reproducibilityGood results are obtained.

Description

Open-circuit voltage control method for lead-acid storage battery
Technical Field
The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to a lead-acid storage battery open-circuit voltage control method.
Background
The open-circuit voltage is calculated by converting the measured electrolyte density through a formula after the formation of the battery is finished, at the moment, the charge and discharge are finished, the open-circuit voltage is a determined value, and the open-circuit voltage is very difficult to adjust when the open-circuit voltage is not in an expected range.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for controlling the open-circuit voltage of a lead-acid storage battery, which has the following specific technical scheme:
a lead-acid battery open circuit voltage control method, the control method comprising the steps of:
s1, determining the mass ratio of the pure sulfuric acid in the lead plaster:
determining lead plaster formula, wherein the total amount of lead plaster is M1Pure sulfuric acid mass M2；
The mass ratio of the pure sulfuric acid in the lead plaster is P1，P1＝M2/M1；
S2, determining the mass of pure sulfuric acid in the single polar plate:
determining lead plaster coating quality M of single polar plate3；
Mass M of pure sulfuric acid in single plate4＝M3*P1；
S3, total mass of pure sulfuric acid of the pole plate in the unit cell:
determining the number m of the positive plates n and the negative plates in the single lattice;
total mass nM of pure sulfuric acid of positive plate in unit cell3Total mass mM of pure sulfuric acid of negative plate in single lattice3；
S4, the mass of the pure sulfuric acid in the single lattice acid solution is as follows:
determining the total weight percentage content M of the sulfuric acid added to the single lattice5Determining the mass ratio of pure sulfuric acid according to an acid liquor specification table;
pure sulfuric acid mass M in the total added sulfuric acid mass percentage6＝M5*(30-40％)；
S5, determining electrolyte density rho:
the water and sulfuric acid loss in the formation process is linearly changed, and the loss is neglected in all calculations; the total mass percentage of sulfur acid in the electrolyte system
P2＝(nM3+mM3+M6)/(nM3+mM3+M5)；
According to P2Determining the density rho of the electrolyte;
s6, correcting the voltage V of the single cellSheet：
The correction formula between the cell voltage and the electrolyte density is as follows: vSheet＝ρ+0.85；
By adjusting M5Correction of VSheetTo the required open circuit voltage.
Further, the pure sulfuric acid in the acid solution accounts for 30-40% by mass.
Further, the electrolyte density ρ is determined in the following manner: and searching a sulfuric acid mass percentage-density comparison table.
The invention has the beneficial effects that:
1. the sulfuric acid source in the lead-acid storage battery comprises two parts: mixing with paste, and adding acid. The proportion of lead powder, dilute sulfuric acid and pure water in the lead plaster is fixed, the density of sulfuric acid used for adding acid is also fixed, but the added weight can be adjusted; the pure sulfuric acid content of the whole sulfuric acid system can be controlled by adjusting the acid adding weight, so that the aim of predicting the open-circuit voltage in advance is fulfilled, and a desired voltage value is obtained;
2. calculating the pure sulfuric acid content in the electrolyte inside the battery by a formula, calculating the current process value, and when the open-circuit voltage is not in the expected range, controlling the pure sulfuric acid content in the electrolyte system to be in a certain range by supplementing high or low content dilute sulfuric acid in the formation process so as to obtain the expected voltage value; can be calculated in advance, avoids adjustment after the fact, and has good reproducibility.
Drawings
Figure 1 shows a mass percent sulfuric acid-density comparison schematic of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
A lead-acid battery open circuit voltage control method, the control method comprising the steps of:
s1, determining the mass ratio of the pure sulfuric acid in the lead plaster:
determining lead plaster formula, wherein the total amount of lead plaster is M1Pure sulfuric acid mass M2(ii) a The lead plaster formula is a fixed numerical value when the manufacturer produces the lead plaster;
the mass ratio of the pure sulfuric acid in the lead plaster is P1，P1＝M2/M1；
The step is used for predetermining the proportion of pure sulfuric acid in the whole lead plaster, so that the proportion of the pure sulfuric acid in the lead plaster coated on a single polar plate can be determined, and the quality of the pure sulfuric acid of the single grid polar plate can be conveniently determined subsequently;
s2, determining the mass of pure sulfuric acid in the single polar plate:
determining lead plaster coating quality M of single polar plate3(ii) a The paste coating amount of a single polar plate is a fixed value in production;
mass M of pure sulfuric acid in single plate4＝M3*P1；
S3, total mass of pure sulfuric acid of the pole plate in the unit cell:
determining the number m of the positive plates n and the negative plates in the single lattice;
total mass nM of pure sulfuric acid of positive plate in unit cell3Total mass mM of pure sulfuric acid of negative plate in single lattice3；
The total mass of each polar plate in the single cell can be determined by the step, so that the total mass of the pure sulfuric acid in the single cell can be accurately determined in the following step;
s4, the mass of the pure sulfuric acid in the single lattice acid solution is as follows:
determining the total weight percentage content M of the sulfuric acid added to the single lattice5Determining the mass ratio of pure sulfuric acid according to an acid liquor specification table;
pure sulfuric acid mass M in the total added sulfuric acid mass percentage6＝M5*(30-40%); 30-40% of the electrolyte is the conventional content of pure sulfuric acid in the electrolyte;
the pure sulfuric acid in the single lattice contains the pure sulfuric acid in the polar plate and the added acid solution, and the step is used for determining the content of the pure sulfuric acid in the acid solution;
s5, determining electrolyte density rho: the water and sulfuric acid loss in the formation process is linearly changed, and the loss is neglected in all calculations; the total mass percentage content P of the sulfuric acid in the electrolyte system2＝(nM3+mM3+M6)/(nM3+mM3+M5)；
According to P2Determining the density rho of the electrolyte; the figure 1 shows the searched sulfuric acid mass percentage content-density comparison chart; the sulfuric acid mass percentage-density comparison table is an industry standard comparison chart, and the electrolyte density can be quickly determined;
s6, correcting the voltage V of the single cellSheet：
The correction formula between the cell voltage and the electrolyte density is as follows: vSheetρ + 0.85; 0.85 is a correction coefficient;
by adjusting M5Correction of VSheetTo the required open circuit voltage.
Calculating the pure sulfuric acid content in the electrolyte inside the battery by a formula, calculating the current process value, and when the open-circuit voltage is not in the expected range, controlling the pure sulfuric acid content in the electrolyte system to be in a certain range by supplementing high or low content dilute sulfuric acid in the formation process so as to obtain the expected voltage value; can be calculated in advance, avoids adjustment after the fact, and has good reproducibility.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (3)

1. A lead-acid storage battery open-circuit voltage control method is characterized by comprising the following steps:
s1, determining the mass ratio of the pure sulfuric acid in the lead plaster:
determining lead plaster formula, wherein the total amount of lead plaster is M1Pure sulfuric acid mass M2；
The mass ratio of the pure sulfuric acid in the lead plaster is P1，P1＝M2/M1；
S2, determining the mass of pure sulfuric acid in the single polar plate:
determining lead plaster coating quality M of single polar plate3；
Mass M of pure sulfuric acid in single plate4＝M3*P1；
S3, total mass of pure sulfuric acid of the pole plate in the unit cell:
determining the number m of the positive plates n and the negative plates in the single lattice;
total mass nM of pure sulfuric acid of positive plate in unit cell3Total mass mM of pure sulfuric acid of negative plate in single lattice3；
S4, the mass of the pure sulfuric acid in the single lattice acid solution is as follows:
determining the total weight percentage content M of the sulfuric acid added to the single lattice5Determining the mass ratio of pure sulfuric acid according to an acid liquor specification table;
pure sulfuric acid mass M in the total added sulfuric acid mass percentage6＝M5*(30-40％)；
S5, determining electrolyte density rho:
the water and sulfuric acid loss in the formation process is linearly changed, and the loss is neglected in all calculations; the total mass percentage content P of the sulfuric acid in the electrolyte system2＝(nM3+mM3+M6)/(nM3+mM3+M5)；
According to P2Determining the density rho of the electrolyte;
s6, correcting the voltage V of the single cellSheet：
The correction formula between the cell voltage and the electrolyte density is as follows: vSheet＝ρ+0.85；
By adjusting M5Correction of VSheetTo the required open circuit voltage.
2. The open-circuit voltage control method of a lead-acid battery according to claim 1, characterized in that: the pure sulfuric acid in the acid solution accounts for 30-40% by mass.
3. The open-circuit voltage control method of a lead-acid battery according to claim 1, characterized in that: the electrolyte density rho is determined in the following manner: and searching a sulfuric acid mass percentage-density comparison table.
CN202110307516.0A 2021-03-23 2021-03-23 Open-circuit voltage control method for lead-acid storage battery Pending CN113270650A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09211090A (en) * 1996-01-30 1997-08-15 Yuasa Corp Method for measuring remaining capacity of lead storage battery
JP2003303614A (en) * 2002-04-10 2003-10-24 Yuasa Corp Manufacturing method and inspection method of control valve type lead acid storage battery
JP2004171983A (en) * 2002-11-21 2004-06-17 Japan Storage Battery Co Ltd Manufacturing of lead-acid battery and storing and complementary charging method
CN103594742A (en) * 2013-11-22 2014-02-19 天能电池集团有限公司 Sorting and grouping method for power lead-acid storage battery set
CN112421137A (en) * 2020-10-29 2021-02-26 安徽力普拉斯电源技术有限公司 Charging voltage matching method for power lead-acid storage battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09211090A (en) * 1996-01-30 1997-08-15 Yuasa Corp Method for measuring remaining capacity of lead storage battery
JP2003303614A (en) * 2002-04-10 2003-10-24 Yuasa Corp Manufacturing method and inspection method of control valve type lead acid storage battery
JP2004171983A (en) * 2002-11-21 2004-06-17 Japan Storage Battery Co Ltd Manufacturing of lead-acid battery and storing and complementary charging method
CN103594742A (en) * 2013-11-22 2014-02-19 天能电池集团有限公司 Sorting and grouping method for power lead-acid storage battery set
CN112421137A (en) * 2020-10-29 2021-02-26 安徽力普拉斯电源技术有限公司 Charging voltage matching method for power lead-acid storage battery

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