CN110660974A - Lead-acid storage battery for electric vehicle - Google Patents
Lead-acid storage battery for electric vehicle Download PDFInfo
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- CN110660974A CN110660974A CN201910908798.2A CN201910908798A CN110660974A CN 110660974 A CN110660974 A CN 110660974A CN 201910908798 A CN201910908798 A CN 201910908798A CN 110660974 A CN110660974 A CN 110660974A
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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
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
- H01M4/21—Drying of pasted electrodes
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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
- H01M4/57—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead of "grey lead", i.e. powders containing lead and lead oxide
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a lead-acid storage battery for an electric vehicle, which comprises a positive plate, a negative plate, a separator and electrolyte, wherein the positive plate is formed by compounding a grid, positive lead paste and a protective layer, and is prepared by the following method: uniformly coating positive lead plaster on a grid, pre-curing, spraying a protective solution on the surface of the positive lead plaster, curing to form a film, and drying to form a protective layer, thus obtaining a positive plate; the protective solution is prepared from the following components in percentage by mass of 100: 15-20: 0.05-0.08: 0.02-0.05 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1; the positive lead plaster comprises the following raw materials: lead powder, dilute sulfuric acid, stannous sulfate, sodium caseinate and thioglycollic acid. The lead-acid storage battery provided by the invention has the advantages of long service life, strong charging acceptance, difficulty in accumulation of lead dioxide on the positive plate and falling off, and suitability for the field of electric vehicles.
Description
Technical Field
The invention relates to the technical field of lead-acid storage batteries, in particular to a lead-acid storage battery for an electric vehicle.
Background
Electric vehicles have become one of the important transportation means in daily life in recent years due to their convenience and high cost performance. The electric vehicle takes a battery as a power source, converts electric energy into mechanical energy through components such as a controller and a motor, and changes the speed of the electric vehicle through controlling the magnitude of current to perform mechanical motion according with an expected path. Lead-acid batteries are the preferred battery type for electric vehicles because of their advantages of good reversibility, stable voltage characteristics, capability of large-current discharge, low production cost, etc. However, the service life of the lead-acid storage battery for the electric vehicle sold on the market at present is generally short, and is only 8-10 months, and a large amount of lead dioxide crystals are accumulated near the traditional positive plate after the lead-acid storage battery is used for a long time, so that the service cycle of the lead-acid storage battery is shortened. Based on the defects in the prior art, the invention provides a lead-acid storage battery for an electric vehicle.
Disclosure of Invention
The invention aims to solve the problems that the service life of the conventional lead-acid storage battery is short and zinc dioxide crystals are accumulated, and provides a lead-acid storage battery for an electric vehicle.
The lead-acid storage battery for the electric vehicle comprises a positive plate, a negative plate, a separator and electrolyte, wherein the positive plate is formed by compounding a plate grid, positive lead paste and a protective layer, and is prepared by the following method: uniformly coating 120-140 g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate;
the protective solution is prepared from the following components in percentage by mass of 100: 15-20: 0.05-0.08: 0.02-0.05 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 30-40 min at 50-55 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 90-100 parts of lead powder, 8-10 parts of dilute sulfuric acid, 0.01-0.02 part of stannous sulfate, 0.03-0.05 part of sodium sulfate, 0.005-0.007 part of sodium caseinate and 0.02-0.05 part of thioglycolic acid.
Preferably, the electrolyte has a density of 1.32g/cm at 25 DEG C3Aqueous sulfuric acid solution.
Preferably, the pre-curing conditions are as follows: the precuring temperature is 65-75 ℃, the precuring time is 10-15 h, and the precuring humidity is 95-100%. .
Preferably, the density of the dilute sulfuric acid at 25 ℃ is 1.16-1.24 g/cm3。
Preferably, the mass ratio of the protective solution to the protective solution is 100: 18: 0.07: 0.04 parts of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 35min at 55 ℃, and naturally cooling to room temperature to obtain the product.
Preferably, the positive electrode lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 13min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 45 ℃, stirring and mixing for 15min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
Compared with the prior art, the invention has the beneficial effects that:
1. the lead-acid storage battery provided by the invention comprises a positive plate, a negative plate, a partition plate and electrolyte, wherein the positive plate is coated on a grid through positive lead paste in a reasonable ratio and is prepared by pre-curing, spraying a specially prepared protective solution, forming a film and drying, the positive plate can be effectively protected, the crystalline accumulation of lead dioxide on the surface of the positive plate is reduced in the using process of the lead-acid storage battery, the problem of short service life of the traditional lead-acid storage battery caused by the falling of the positive plate is effectively solved, and the lead-acid storage battery is better applied to the field of electric vehicles.
2. According to the invention, polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1 are ultrasonically dispersed at a certain temperature to obtain the modified protection solution, the obtained protection solution can quickly form a protection layer on the surface of the pre-cured positive lead paste under the promotion of an electrolyte, the positive lead paste is protected, meanwhile, a large amount of lead dioxide can be effectively inhibited from being accumulated on the surface of the positive plate, the long-time normal work of the positive plate is ensured, and the service life of the lead-acid storage battery is prolonged.
3. The positive lead plaster used in the invention has reasonable proportion, and simultaneously, the base material A consisting of lead powder and dilute sulfuric acid is modified by the base material B prepared from dilute sulfuric acid, sodium sulfate, sodium caseinate, thioglycolic acid and stannous sulfate, so that the positive lead plaster has more excellent bonding strength, the positive lead plaster is firmly combined with a grid, the positive plate has stronger corrosion resistance, and the charge acceptance of a lead-acid storage battery can be improved.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
The lead-acid storage battery for the electric vehicle comprises a positive plate, a negative plate, a separator and electrolyte, wherein the electrolyte has the density of 1.32g/cm at 25 DEG C3The positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 120g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate; the pre-curing conditions are as follows: the pre-curing temperature is 65 ℃, the pre-curing time is 15h, and the pre-curing humidity is 95%.
The protective solution is prepared from the following components in percentage by mass of 100: 20: 0.05: 0.05 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 40min at 50 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 90 parts of lead powder, 10 parts of dilute sulfuric acid, 0.01 part of stannous sulfate, 0.03 part of sodium sulfate, 0.005 part of sodium caseinate and 0.05 part of thioglycolic acid; the density of the dilute sulfuric acid at 25 ℃ is 1.16g/cm3The positive lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 10min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 50 ℃, and stirring and mixing for 10min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
Example 2
The lead-acid storage battery for the electric vehicle comprises a positive plate, a negative plate, a separator and electrolyte, wherein the electrolyte has the density of 1.32g/cm at 25 DEG C3The positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 130g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate; the pre-curing conditions are as follows: the pre-curing temperature is 70 ℃, the pre-curing time is 13h, and the pre-curing humidity is 95%.
The protective solution is prepared from the following components in percentage by mass of 100: 18: 0.07: 0.04 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 35min at 53 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 95 parts of lead powder, 9 parts of dilute sulfuric acid, 0.015 part of stannous sulfate, 0.04 part of sodium sulfate, 0.005 part of sodium caseinate and 0.03 part of thioglycolic acid; the density of the dilute sulfuric acid at 25 ℃ is 1.16g/cm3The positive lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 15min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 45 ℃, stirring and mixing for 15min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
Example 3
The invention provides a lead-acid storage battery for an electric vehicle, which comprises a positive plate, a negative plate, a partition plate and electrolyte, wherein the electrolyte isThe density at 25 ℃ is 1.32g/cm3The positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 140g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate; the pre-curing conditions are as follows: the precuring temperature is 75 ℃, the precuring time is 10h, and the precuring humidity is 100%.
The protective solution is prepared from the following components in percentage by mass of 100: 18: 0.07: 0.04 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 35min at 55 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 100 parts of lead powder, 8 parts of dilute sulfuric acid, 0.02 part of stannous sulfate, 0.05 part of sodium sulfate, 0.007 part of sodium caseinate and 0.02 part of thioglycolic acid; the density of the dilute sulfuric acid at 25 ℃ is 1.24g/cm3The positive lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 15min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 40 ℃, stirring and mixing for 20min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
Comparative example 1
The lead-acid storage battery for the electric vehicle comprises a positive plate, a negative plate, a separator and electrolyte, wherein the electrolyte has the density of 1.32g/cm at 25 DEG C3The positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 120g of positive lead paste on each grid, pre-curing, and drying to form a protective layer, thereby obtaining a positive plate; the pre-curing conditions are as follows: the pre-curing temperature is 65 ℃, the pre-curing time is 15h, and the pre-curing humidity is 95%.
The positive lead plaster comprises the following raw materials in parts by weight: 90 parts of lead powder, 10 parts of dilute sulfuric acid, 0.01 part of stannous sulfate, 0.03 part of sodium sulfate and casein0.005 part of sodium and 0.05 part of thioglycolic acid; the density of the dilute sulfuric acid at 25 ℃ is 1.16g/cm3The positive lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 10min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 50 ℃, and stirring and mixing for 10min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
Comparative example 2
The lead-acid storage battery for the electric vehicle comprises a positive plate, a negative plate, a separator and electrolyte, wherein the electrolyte has the density of 1.32g/cm at 25 DEG C3The positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 120g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate; the pre-curing conditions are as follows: the pre-curing temperature is 65 ℃, the pre-curing time is 15h, and the pre-curing humidity is 95%.
The protective solution is prepared from the following components in percentage by mass of 100: 20: 0.05: 0.05 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 40min at 50 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 90 parts of lead powder, 10 parts of dilute sulfuric acid and 0.03 part of sodium sulfate; the density of the dilute sulfuric acid at 25 ℃ is 1.16g/cm3The positive lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 10min to obtain a base material A; adding sodium sulfate into the other part, heating to 50 deg.C, stirring and mixing for 10min to obtain base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
The positive plate, the negative plate, the separator and the electrolyte in the lead-acid storage batteries of the embodiments 1 to 3, the comparative example 1 and the comparative example 2 are assembled, acid-filled and formed according to a conventional 6-DZM-12Ah assembly process, and the 6-DZM-12Ah battery obtained by conventional production is selected as a control group for performance detection, and the results are shown in the following table:
in the table: the charging current is the current after charging for 10 min; the capacity retention rate and whether the positive electrode plate was peeled off were the results after cycle testing 450 times.
The detection results show that the lead-acid storage batteries obtained in the embodiments 1-3 of the invention have obvious advantages compared with conventional batteries and comparative examples, and especially the protective solution and the modified positive lead paste have significant effects on improving the charge acceptance of the batteries and prolonging the cycle service life of the batteries.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The lead-acid storage battery for the electric vehicle is characterized by comprising a positive plate, a negative plate, a separator and electrolyte, wherein the positive plate is formed by compounding a grid, positive lead paste and a protective layer, and the positive plate is prepared by the following method: uniformly coating 120-140 g of positive lead plaster on each grid, performing precuring, spraying a protective solution on the surface of the precured positive lead plaster, curing to form a film, and drying to form a protective layer, thereby obtaining the positive plate;
the protective solution is prepared from the following components in percentage by mass of 100: 15-20: 0.05-0.08: 0.02-0.05 of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 30-40 min at 50-55 ℃, and naturally cooling to room temperature to obtain the product;
the positive lead plaster comprises the following raw materials in parts by weight: 90-100 parts of lead powder, 8-10 parts of dilute sulfuric acid, 0.01-0.02 part of stannous sulfate, 0.03-0.05 part of sodium sulfate, 0.005-0.007 part of sodium caseinate and 0.02-0.05 part of thioglycolic acid.
2. The lead-acid storage battery for electric vehicles according to claim 1, wherein the electrolyte has a density of 1.32g/cm at 25 ℃3Aqueous sulfuric acid solution.
3. The lead-acid battery for electric vehicles according to claim 1, characterized in that the conditions of pre-curing are: the precuring temperature is 65-75 ℃, the precuring time is 10-15 h, and the precuring humidity is 95-100%.
4. The lead-acid storage battery for the electric vehicle according to claim 1, wherein the density of the dilute sulfuric acid at 25 ℃ is 1.16-1.24 g/cm3。
5. The lead-acid storage battery for the electric vehicle according to claim 1, wherein the protective solution is prepared from the following components in a mass ratio of 100: 18: 0.07: 0.04 parts of polyaniline, polyvinyl alcohol, graphene oxide and palmitoyl tripeptide-1, ultrasonically dispersing for 35min at 55 ℃, and naturally cooling to room temperature to obtain the product.
6. The lead-acid storage battery for the electric vehicle according to claim 1, wherein the positive electrode lead paste comprises the following raw materials in parts by weight: 95 parts of lead powder, 9 parts of dilute sulfuric acid, 0.015 part of stannous sulfate, 0.04 part of sodium sulfate, 0.006 part of sodium caseinate and 0.04 part of thioglycolic acid.
7. The lead-acid storage battery for the electric vehicle according to claim 6, wherein the positive electrode lead paste is prepared by the following method: dividing dilute sulfuric acid into two parts, adding lead powder into one part, and performing ultrasonic dispersion for 10-15 min to obtain a base material A; adding sodium sulfate, sodium caseinate, thioglycollic acid and stannous sulfate into the other part, heating to 40-50 ℃, and stirring and mixing for 10-20 min to obtain a base material B; and adding the base material B into the base material A, and continuously stirring for 20min to obtain the anode lead paste.
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