CN113611852B - Positive and negative pole lead plaster of lead-acid storage battery - Google Patents
Positive and negative pole lead plaster of lead-acid storage battery Download PDFInfo
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- CN113611852B CN113611852B CN202110709124.7A CN202110709124A CN113611852B CN 113611852 B CN113611852 B CN 113611852B CN 202110709124 A CN202110709124 A CN 202110709124A CN 113611852 B CN113611852 B CN 113611852B
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/56—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead
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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
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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)
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses positive and negative pole lead paste of a lead-acid storage battery. Belongs to the technical field of lead-acid storage batteries. The positive and negative electrode lead paste can be used for adjusting the density of the electrolyte in the final battery. It is mainly characterized in that: comprises positive lead plaster and negative lead plaster; and alkaline additives are added into the positive lead plaster and the negative lead plaster. The positive and negative electrode lead pastes prepared by the method can effectively improve the binding force between the positive electrode lead paste and the grid, and simultaneously effectively adjust the composition and the appearance of the negative electrode lead paste; when the battery added with the additive is formed, dilute sulfuric acid is directly added, and the electrolyte additive is not required to be added, so that the requirements of long service life and high power of the battery can be met. The method is mainly used for adjusting the density of the electrolyte in the final battery, so that the production process of the lead-acid storage battery is controllable and adjustable, and the regulation and the control are simple and convenient.
Description
Technical Field
The invention belongs to the technical field of lead-acid storage batteries, and particularly relates to a lead paste for positive and negative electrodes of a lead-acid storage battery, which is added with an alkaline additive.
Background
In the production process of lead-acid storage batteries, the production process is limited by historical experience and equipment capacity, and each storage battery manufacturer has own electrolyte density design requirements, so that certain difference exists between relation curves between the battery state of charge (SOC) and the battery terminal voltage (OCV) of each storage battery manufacturer. When the whole vehicle is developed in a matched manner, a whole vehicle factory can calibrate the original battery and transmit the calibrated parameters to the corresponding sensors so as to monitor the internal state of the battery. However, since the original battery is generally expensive, the user will have a strong desire to replace the battery of another manufacturer when actually using the battery. However, when the electrolyte densities of storage batteries of different manufacturers are different, the SOC value read by the calibrated sensor is different from the actual state of charge of the battery, which easily causes the problems of insufficient charge and overcharge of the battery, and finally leads to the early end of the service life of the replaced new battery.
The density of the electrolyte of the existing common rich-solution battery is in a range of 1.28 to 1.30g/mL, the density of the electrolyte of the AGM battery is in a range of 1.31 to 1.33g/mL, and the quality fluctuation of other similar products is easily caused by adjusting a formation process or a method for initially adding acid and acid density aiming at the batteries produced in large batches. Therefore, it is necessary to find a simple and effective method for adjusting acid density.
Disclosure of Invention
The invention aims to provide the lead paste for the positive electrode and the negative electrode of the lead-acid storage battery aiming at the defects, and the final electrolyte density of the storage battery after formation can be adjusted on the basis of not reducing the performance of the storage battery and not introducing impurities.
The technical solution of the invention is as follows: the utility model provides a lead-acid storage battery positive negative pole lead plaster, includes anodal lead plaster and negative pole lead plaster, its characterized in that: and alkaline additives are added into the positive lead plaster and the negative lead plaster.
The alkaline additive in the technical solution of the present invention is one or more mixture of alkali metal, alkaline earth metal hydroxide and alkaline earth metal carbonate.
The alkaline additive in the technical proposal of the invention is KOH, naOH, na 2 CO 3 And K 2 CO 3 One or more of the above.
The addition amount of the alkaline additive in the technical scheme is 0.01-0.05% of the content of lead powder in the positive lead plaster and the negative lead plaster.
The addition amount of the alkaline additive in the technical scheme is 0.01-0.03% of the content of lead powder in the positive lead plaster and the negative lead plaster.
The addition amount of the alkaline additive in the technical scheme is 0.01-0.02% of the lead powder content in the positive lead plaster and 0.01-0.03% of the lead powder content in the negative lead plaster.
The alkaline additive in the technical scheme of the invention is directly added into lead powder required by the anode lead paste and the cathode lead paste in the paste mixing process.
The alkaline additive and the lead powder are uniformly mixed in the technical scheme of the invention.
The addition amount of the alkaline additive in the technical solution of the invention is determined according to the set electrolyte density value.
The invention relates to a lead-acid storage battery positive and negative pole lead paste and a method for adding an alkaline additive during preparation, which comprises the following steps:
(1) Weighing positive and negative lead pastes and lead powder required by the preparation;
(2) According to the final required electrolyte density requirement, respectively adding alkaline additive which is alkali metal, alkaline earth metal hydroxide or alkaline earth metal carbonate, such as KOH, naOH or Na 2 CO 3 、K 2 CO 3 One or more mixtures of (a);
(3) Then adding other additives in sequence, and carrying out dry mixing, wet mixing and multi-stage vacuum paste mixing;
(4) Subsequently, pole plate coating, pole plate curing and battery assembling are carried out in sequence;
(5) When the acid is added into the battery, dilute sulfuric acid without any additive is directly added, and then the formation is carried out by a normal process.
The technical principle of the invention is as follows: adding alkaline additive during the preparation of positive and negative pole lead pastes. When the alkaline additive is added during the preparation of the positive electrode lead paste, the alkaline additive and the lead powder are fully mixed through the steps of dry mixing, wet mixing and the like, so that the rapid oxidation of metal lead in the lead paste during the solidification of a subsequent polar plate can be promoted, the generation ratio of 4BS is improved, and the service life of a positive electrode active substance can be effectively prolonged through the effect; when the alkaline additive is added into the negative lead plaster, the alkaline additive is uniformly distributed in the lead plaster, and the alkaline additive reacts with sulfuric acid after the battery is formed to generate alkali metal sulfate and water, so that on one hand, the density of the finally formed electrolyte can be adjusted to realize matching with batteries of other manufacturers, on the other hand, the alkali metal sulfate additive required by the electrolyte is directly generated, and meanwhile, the aperture of the negative lead plaster is improved along with the reaction, thereby effectively improving the low-temperature discharge performance of the battery. In the whole process, no new impurities are introduced, and the operation step of adding additives into the electrolyte is effectively avoided.
The invention is mainly used for adjusting the density of the electrolyte inside the final battery.
Drawings
FIG. 1 is a process flow diagram for normal production of finished lead-acid batteries.
Detailed Description
The invention will be further described with reference to the following detailed description and the process flow shown in FIG. 1.
The lead paste for the positive electrode and the negative electrode of the lead-acid storage battery comprises positive lead paste and negative lead paste, wherein alkaline additives are added into the positive lead paste and the negative lead paste. The positive lead plaster and the negative lead plaster are the conventional positive lead plaster and the conventional negative lead plaster of the prior lead-acid storage battery except for the alkaline additive. The alkaline additive is one or more of alkali metal, alkaline earth metal hydroxide and alkaline earth metal carbonate. The hydroxide of alkaline earth metal includes KOH, naOH, etc., and the carbonate of alkaline earth metal includes Na 2 CO 3 、K 2 CO 3 And the like. The addition amount of the alkaline additive is 0.01-0.05% or 0.01-0.03% of the lead powder content in the positive lead plaster and the negative lead plaster, and the preferred addition amount of the alkaline additive is 0.01-0.02% of the lead powder content in the positive lead plaster and 0.01-0.03% of the lead powder content in the negative lead plaster. The addition amount of the alkaline additive is determined according to the set electrolyte density valueAnd comprehensively determining the electrolyte density values of the batteries of other manufacturers. The alkaline additive is directly added into lead powder required by the positive lead paste and the negative lead paste in the paste mixing process, and the alkaline additive and the lead powder are preferably uniformly mixed.
Example 1
For a certain 12V 60Ah AGM storage battery, the end point electrolyte density is 1.31g/m 3 The production method comprises the following steps:
(1) When the lead paste is combined, 500kg of positive and negative lead paste and 500kg of lead powder required by preparation are weighed respectively; then respectively adding 0.1kg of sodium hydroxide (accounting for 0.02 percent of the weight of the lead powder) into the positive lead powder and 0.15kg of potassium hydroxide (accounting for 0.02 percent of the weight of the lead powder) into the negative lead powder;
(2) Then adding other additives in sequence, and performing dry mixing, wet mixing and multi-stage vacuum acid adding to mix the paste;
(3) Sequentially carrying out the steps of pole plate coating and filling, pole plate curing, battery assembling and the like according to normal process requirements;
(4) When the acid is added into the battery, 1.24g/mL dilute sulfuric acid without any additive is directly added, and then the formation is carried out by a normal process.
The cell performance versus normal comparative scheme for the cells assembled under the above conditions is shown in table 1 below.
The above results show that with the additive according to the invention, the capacity and the lifetime are comparable to the comparative scheme, but the low temperature discharge and charge acceptance are improved.
Example 2
For a certain 12V 70Ah AGM storage battery, the terminal electrolyte density is 1.32g/m 3 The production method comprises the following steps:
(1) When the lead paste is combined, firstly weighing 800kg of positive and negative lead paste and lead powder required by preparation; then respectively adding 0.08kg of sodium hydroxide (the weight ratio of the sodium hydroxide to the lead powder is 0.01%) into the positive lead powder and adding 0.16kg of sodium hydroxide (the weight ratio of the sodium hydroxide to the lead powder is 0.02%) into the negative lead powder;
(2) Then adding other additives in sequence, and performing dry mixing, wet mixing and multi-stage vacuum acid adding to mix the paste;
(3) Sequentially carrying out the steps of pole plate coating and filling, pole plate curing, battery assembling and the like according to normal process requirements;
(4) When the acid is added into the battery, 1.24g/mL dilute sulfuric acid without any additive is directly added, and then the formation is carried out by a normal process.
The cell performance versus normal comparative scheme for the cells assembled under the above conditions is shown in table 2 below.
The above results show that with the additive according to the invention, the capacity and the lifetime are comparable to the comparative scheme, but the low temperature discharge and charge acceptance are improved.
Example 3
For a certain 12V 80Ah AGM storage battery, the end point electrolyte density is 1.315g/m 3 The production method comprises the following steps:
(1) When the lead paste is combined, 600kg of positive and negative lead paste and 600kg of lead powder required by preparation are weighed; then respectively adding 0.09kg of potassium hydroxide (accounting for 0.015 percent of the weight of the potassium hydroxide and the lead powder) into the positive lead powder and 0.18kg of sodium hydroxide (accounting for 0.03 percent of the weight of the sodium hydroxide and the lead powder) into the negative lead powder;
(2) Then sequentially adding other additives, and performing dry mixing, wet mixing and multi-stage vacuum acid adding to obtain a paste;
(3) Sequentially carrying out the steps of pole plate coating and filling, pole plate curing, battery assembling and the like according to normal process requirements;
(4) When the acid is added into the battery, 1.24g/mL dilute sulfuric acid without any additive is directly added, and then the formation is carried out by a normal process.
The cell performance ratio of the cell assembled under the above conditions to the normal comparative scheme is shown in table 3 below.
The above results show that the capacity, low temperature discharge, charge acceptance and life of the additive of the present invention are comparable to those of the comparative scheme.
Claims (4)
1. The utility model provides a lead acid battery positive negative pole lead plaster, includes anodal lead plaster and negative pole lead plaster, its characterized in that: alkaline additives are added into the positive lead plaster and the negative lead plaster; the alkaline additive is KOH, naOH or Na 2 CO 3 And K 2 CO 3 One or more mixtures of (a); according to the weight ratio, the addition amount of the alkaline additive in the positive lead plaster is 0.01-0.05% of the content of the lead powder in the positive lead plaster, and the addition amount of the alkaline additive in the negative lead plaster is 0.01-0.05% of the content of the lead powder in the negative lead plaster; the addition amount of the alkaline additive is determined according to the density value of the electrolyte after the lead-acid storage battery is formed; the alkaline additive is directly added into lead powder required by the anode lead paste and the cathode lead paste in the paste mixing process.
2. The positive and negative electrode lead paste of the lead-acid storage battery as claimed in claim 1, wherein: according to the weight ratio, the addition amount of the alkaline additive in the positive lead plaster is 0.01-0.03% of the content of the lead powder in the positive lead plaster, and the addition amount of the alkaline additive in the negative lead plaster is 0.01-0.03% of the content of the lead powder in the negative lead plaster.
3. The positive and negative electrode lead paste of the lead-acid storage battery as claimed in claim 1, wherein: according to the weight ratio, the addition amount of the alkaline additive in the positive lead plaster is 0.01-0.02% of the content of the lead powder in the positive lead plaster, and the addition amount of the alkaline additive in the negative lead plaster is 0.01-0.03% of the content of the lead powder in the negative lead plaster.
4. The positive and negative electrode lead paste for the lead-acid storage battery according to any one of claims 1 to 3, wherein: the alkaline additive and the lead powder are uniformly mixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110709124.7A CN113611852B (en) | 2021-06-25 | 2021-06-25 | Positive and negative pole lead plaster of lead-acid storage battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110709124.7A CN113611852B (en) | 2021-06-25 | 2021-06-25 | Positive and negative pole lead plaster of lead-acid storage battery |
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| CN113611852A CN113611852A (en) | 2021-11-05 |
| CN113611852B true CN113611852B (en) | 2022-11-29 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931791A (en) * | 2019-10-31 | 2020-03-27 | 双登集团股份有限公司 | High-specific-energy lead-acid storage battery negative electrode lead paste additive and preparation method thereof |
| CN111525126A (en) * | 2020-03-31 | 2020-08-11 | 河南超威正效电源有限公司 | Positive lead paste for high-binding-force screen punching plate grid and preparation method and application thereof |
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- 2021-06-25 CN CN202110709124.7A patent/CN113611852B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931791A (en) * | 2019-10-31 | 2020-03-27 | 双登集团股份有限公司 | High-specific-energy lead-acid storage battery negative electrode lead paste additive and preparation method thereof |
| CN111525126A (en) * | 2020-03-31 | 2020-08-11 | 河南超威正效电源有限公司 | Positive lead paste for high-binding-force screen punching plate grid and preparation method and application thereof |
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| CN113611852A (en) | 2021-11-05 |
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