CN112310411A - High-specific-energy lead-acid storage battery and production method thereof - Google Patents
High-specific-energy lead-acid storage battery and production method thereof Download PDFInfo
- Publication number
- CN112310411A CN112310411A CN202011317210.5A CN202011317210A CN112310411A CN 112310411 A CN112310411 A CN 112310411A CN 202011317210 A CN202011317210 A CN 202011317210A CN 112310411 A CN112310411 A CN 112310411A
- Authority
- CN
- China
- Prior art keywords
- positive
- negative
- coating
- plate
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
-
- 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
-
- 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
- H01M10/123—Cells or batteries with cylindrical casing
-
- 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
- H01M10/125—Cells or batteries with wound or folded electrodes
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a high-specific energy lead-acid storage battery, which comprises a positive plate, a negative plate, a first diaphragm and a second diaphragm, wherein the first diaphragm, the positive plate, the second diaphragm and the negative plate are sequentially stacked and then folded to form a columnar electrode group, the positive plate comprises a film-shaped positive plate grid and a positive coating, the front surface and the back surface of the positive plate grid are respectively coated with the positive coating, the negative plate comprises a film-shaped negative plate grid and a negative coating, the front surface and the back surface of the negative plate grid are respectively coated with the negative coating, the thicknesses of the positive plate and the negative plate are not more than 300 mu m, and the positive coating and the negative coating are respectively coated with active substances. Also discloses a production method of the lead-acid storage battery with high specific energy, which comprises the following steps: s1, preparing a positive plate and a negative plate; s2, preparing a battery cell; and S3, preparing the battery cell. The invention not only improves the energy density and the charging and discharging power of the battery, but also improves the production efficiency and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to a high-specific-energy lead-acid storage battery and a production method thereof.
Background
The lead-acid storage battery comprises a shell, positive and negative plates, a partition plate and the like, and the traditional structure of the lead-acid storage battery is that a single battery is formed by flat plate type plate laminations (for example, the application number is CN201320052280, the name is a power type lead-acid storage battery plate group, the application number is CN201811038385, the name is a lead-acid storage battery curved surface grid structure), wherein the plates are composed of grid-shaped lead alloy grids and active substances, and the structural design at least has the following defects:
firstly, because the grid needs to have the functions of charging and discharging current conductors and providing mechanical strength, the thickness of a frame is generally 1-1.5mm, and meanwhile, in order to meet the requirement of corrosion resistance, the thickness of a middle chaste tree twig is generally 0.6-1.2mm, so that the weight of the grid is large, and the gravimetric specific energy of a finished battery is greatly reduced.
Secondly, the contact area between the grid and the active material is limited, so that the charge and discharge power of the finished battery is limited.
And thirdly, the thickness of the grid is limited, the coating thickness of the active substance is generally 1-1.2mm, so that the reaction depth of the polar plate is insufficient, the utilization rate of the active substance is generally not more than 35%, and the improvement of the energy density of the battery is limited to a great extent.
Fourthly, the production of the polar plate with the structure comprises the procedures of slicing, wrapping and the like, the process is complicated, and the process rejection rate, the production energy consumption and the human resource are improved.
In addition, the design of the traditional flat laminated battery also needs structures such as lugs and busbars, so that the weight ratio energy of the finished battery is further reduced, additional internal resistance loss is caused, and the energy efficiency is reduced.
In the field of energy storage of lithium batteries, copper foil manufactured by a plating layer is generally adopted as a current collector and an active material carrier to form a film-shaped polar plate strip, and then the battery is produced by a winding or lamination process, so that the utilization rate of positive and negative active materials can be effectively improved, and the purpose of improving the energy specific energy of the battery is achieved. In the lead-acid battery field, lead or lead alloys are the only choice as current collectors and active material carriers due to considerations of the cell reaction mechanisms, such as the strong acidity of the electrolyte, the strong corrosivity, and the binding of the reactive active materials to the current collector. However, due to the characteristics of soft quality and low mechanical strength of the metal lead, a complete technical scheme for realizing a film-shaped polar plate winding type lead-acid battery similar to a lithium battery does not exist yet.
For example, the invention patent with the application number of 201410327285.X discloses a wound lead-acid storage battery, which adopts a pole plate made of a punched grid with the thickness of 0.3-0.5mm after being filled with active substances, and winds the pole plate to form a battery monomer with fan-shaped lugs distributed at two ends.
Therefore, there is a need to improve the structural design of the conventional lead-acid battery in view of the above disadvantages.
Disclosure of Invention
The invention aims to provide a lead-acid storage battery with high specific energy and a production method thereof, which not only improve the energy density and the charging and discharging power of the battery, but also improve the production efficiency and reduce the production cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-specific energy lead-acid storage battery comprises a positive plate, a negative plate, a first diaphragm and a second diaphragm, wherein the first diaphragm, the positive plate, the second diaphragm and the negative plate are sequentially stacked and then folded to form a columnar electrode group, the positive plate comprises a film-shaped positive plate grid and a positive coating, the front surface and the back surface of the positive plate grid are respectively coated with the positive coating, the negative plate comprises a film-shaped negative plate grid and a negative coating, the front surface and the back surface of the negative plate grid are respectively coated with the negative coating, the thicknesses of the positive plate and the negative plate are not more than 300 mu m, and the positive coating and the negative coating are formed by coating active substances.
Further, the folding mode for forming the columnar pole group comprises, but is not limited to, winding and continuous folding, the thickness of the positive plate and the negative plate is 18-300 μm, the thickness of the positive plate grid is 10-200 μm, and the thickness of the negative plate grid is 8-200 μm.
Further, the coating height of the positive coating is lower than that of the positive grid so as to reserve a positive pole lug connection section, and the coating height of the negative coating is lower than that of the negative grid so as to reserve a negative pole lug connection section.
Further, the positive grid and the negative grid include, but are not limited to, a perforated and non-porous structure, and the materials of the positive grid and the negative grid include, but are not limited to, lead foil, lead alloy foil, plastic and lead/lead alloy composite film.
Further, the positive electrode coating and the negative electrode coating are at least formed by coating slurry formed by mixing lead powder, positive and negative electrode additives, sulfuric acid and pure water, and the first diaphragm and the second diaphragm comprise but are not limited to glass fiber diaphragms, microporous plastic diaphragms and non-woven fabrics.
The battery shell is made of insulating materials, and the insulating materials comprise but are not limited to ABS engineering plastics, PP plastics, PC plastics and composite materials made of the above materials.
A production method of a lead-acid storage battery with high specific energy comprises the following steps:
s1 preparation of positive and negative plates
Coating a positive electrode coating on the surface of a continuous film-shaped positive electrode grid to obtain a positive plate with the thickness of no more than 300 mu m, and coating a negative electrode coating on the surface of a continuous film-shaped negative electrode grid to obtain a negative plate with the thickness of no more than 300 mu m;
s2, preparing battery cell
Rolling the prepared positive plate and the prepared negative plate into a column shape in a folding and stacking mode, isolating the positive plate and the negative plate by using a first diaphragm and a second diaphragm, and connecting a column-shaped pole group formed by folding and stacking with a positive terminal and a negative terminal to obtain a battery cell;
s3, preparing battery monomer
And (3) putting the battery core into a battery shell, performing acidification formation, and capping with positive and negative cover plates to obtain a battery monomer.
Further, in step S1, the positive electrode grid has a thickness of 10 to 200 μm, the negative electrode grid has a thickness of 8 to 200 μm, the positive electrode plate and the negative electrode plate both have a thickness of 18 to 300 μm, the coating height of the positive electrode coating is lower than the height of the positive electrode grid to leave a positive electrode tab connection section, the coating height of the negative electrode coating is lower than the height of the negative electrode grid to leave a negative electrode tab connection section, and the positive electrode coating and the negative electrode coating are slurries formed by mixing at least lead powder, positive and negative electrode additives, sulfuric acid and pure water.
Further, in step S2, tabs are led out through the positive tab connection section and the negative tab connection section, or the positive tab connection section and the negative tab connection section of the stacked columnar electrode group are connected together, and then welded to the positive and negative terminals, so as to obtain the battery cell.
Further, the battery pack may be formed by connecting the battery cells manufactured in step S3 in series or in parallel.
After adopting the technical scheme, compared with the background technology, the invention has the following advantages:
1. the invention adopts the structural design of folding after lamination, and the continuous film positive grid and the continuous film negative grid are respectively coated with positive and negative active substances to form positive and negative plates with the thickness not more than 300 mu m, and the film grid and the active substances have small coating thickness, so that the utilization rate of the active substances can be greatly improved, and the energy density of the battery is improved.
2. The continuous-mode grid is used as a current collecting conductor, the contact area of the continuous-mode grid and an active substance is large, the corrosion resistance is improved compared with that of the traditional grid-mode grid, the charging and discharging power of the battery can be greatly improved, and the cycle life of the battery can be effectively prolonged.
3. Compared with the traditional laminated lead-acid storage battery, the laminated lead-acid storage battery has the advantages that the processes of slicing, packaging and the like are omitted, the production process is simple and efficient, the production efficiency can be greatly improved, and the production cost can be reduced.
4. The invention adopts the structural design without the pole ear, reduces the internal resistance of the battery, can improve the energy utilization rate and reduce the heating phenomenon, and meanwhile, the invention has no structures such as a bus bar and the like, can further reduce the weight of the battery and improve the gravimetric specific energy of the finished battery.
5. The invention adopts a columnar structure, can adopt higher assembly pressure, improves the permeability of electrolyte, further improves the utilization rate of active substances, can also improve the heat dissipation performance of the battery in the charging and discharging process, and effectively reduces battery bulge caused by thermal runaway and the like, thereby prolonging the service life of the battery.
Drawings
FIG. 1 is a schematic structural diagram of a pillar-shaped pole group according to an embodiment;
FIG. 2 is a second schematic structural diagram of a pillar-shaped pole group according to an embodiment;
FIG. 3 is a schematic diagram of a battery cell;
FIG. 4 is a block flow diagram of the second embodiment;
FIG. 5 is one of the schematic diagrams of cells connected in series into a battery pack (top);
fig. 6 is a second schematic diagram (bottom) of battery cells connected in series to form a battery pack.
Description of reference numerals:
the positive plate 100, the positive plate grid 110, the positive pole tab connecting section 111 and the positive pole coating 120;
a negative plate 200, a negative plate grid 210, a negative pole tab connecting section 211 and a negative pole coating 220;
a first diaphragm 300;
a second diaphragm 400;
a battery case 500.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 1 to 3, the present invention discloses a high specific energy lead-acid battery, which includes a positive plate 100, a negative plate 200, a first separator 300 and a second separator 400, wherein the first separator 300, the positive plate 100, the second separator 400 and the negative plate 200 are stacked in sequence and then folded to form a cylindrical electrode group. Compared with the traditional laminated lead-acid storage battery, the laminated lead-acid storage battery has the advantages that the processes of slicing, wrapping and the like are omitted, the production process is simple and efficient, the production efficiency can be greatly improved, and the production cost can be greatly reduced.
The positive plate 100 includes a film-shaped positive plate grid 110 and a positive coating 120, the positive plate grid 110 is coated with the positive coating 120 on the front surface and the back surface, the negative plate 200 includes a film-shaped negative plate grid 210 and a negative coating 220, the negative plate grid 210 is coated with the negative coating 220 on the front surface and the back surface, the thickness of the positive plate 100 and the negative plate 200 is not more than 300 μm, and the positive coating 120 and the negative coating 220 are formed by coating active materials.
In the present embodiment, the manner of stacking the positive electrode plates 100 and the negative electrode plates 200 to form the columnar electrode groups includes, but is not limited to, winding and continuous folding (such as zigzag folding), the thickness of each of the positive electrode plates 100 and the negative electrode plates 200 is 18 to 300 μm, the thickness of the positive electrode grid 110 is 10 to 200 μm, and the thickness of the negative electrode grid 210 is 8 to 200 μm.
The coating height of the positive coating 120 is lower than that of the positive grid 110 to leave a positive tab connection section 111, and the coating height of the negative coating 220 is lower than that of the negative grid 210 to leave a negative tab connection section 211. In this embodiment, the tab may be led out to be welded to the positive and negative terminals through the positive tab connection section 111 and the negative tab connection section 211, or the positive tab connection section and the negative tab connection section of the stacked columnar electrode group may be connected together and then welded to the positive and negative terminals.
The positive grid 110 and the negative grid 210 include, but are not limited to, a perforated and non-porous structure, and the materials of the positive grid 110 and the negative grid 210 include, but are not limited to, lead foil, lead alloy foil, plastic, and lead/lead alloy composite film. The positive electrode coating 120 and the negative electrode coating 220 are formed by coating a slurry formed by mixing lead powder, positive and negative electrode additives, sulfuric acid and pure water, and the first separator 300 and the second separator 400 include, but are not limited to, glass fiber separators, microporous plastic separators and non-woven fabrics. In the embodiment, the positive electrode coating 120 is a slurry formed by mixing 80-85 wt.% of lead powder, 6-10 wt.% of pure water, 8-12 wt.% of sulfuric acid, and 0.5-2% of a positive electrode additive, wherein the positive electrode additive includes but is not limited to short fibers, colloidal graphite, anisotropic graphite, antimony trioxide, and the like. The negative electrode coating 220 is a slurry formed by mixing 80-85 wt.% of lead powder, 7-10 wt.% of pure water, 7-10 wt.% of sulfuric acid, and 1-2.5 wt.% of negative electrode additives, wherein the negative electrode additives include but are not limited to short fibers, colloidal graphite, barium sulfate, humic acid, lignin, acetylene black, and the like.
The battery case 500 is further included, the packed columnar pole group is installed in the battery case 500, the shape of the battery case 500 includes, but is not limited to, a cylinder, an elliptic cylinder, and a cuboid, and the battery case 500 is made of an insulating material, which includes, but is not limited to, ABS engineering plastic, PP plastic, PC plastic, and a composite material of the above materials. The battery case 500 preferably has a cylindrical shape, which can apply a high assembly pressure, improve the permeability of the electrolyte, further improve the utilization rate of the active material, and also improve the heat dissipation performance of the battery in the charging and discharging processes, thereby effectively reducing the battery swelling caused by thermal runaway and the like, and thus improving the service life of the battery.
The thin film positive grid 110 and the thin film negative grid 210 are coated with active materials with small thickness, so that the utilization rate of the active materials can be greatly improved, and the energy density of the battery is improved. Meanwhile, the battery is internally designed to have no tab and no bus bar, so that the internal resistance is effectively reduced, the weight of the battery is reduced, and the gravimetric specific energy of the battery is further improved. For example, in the present embodiment, the size of the battery cell is 146mm in height and 37mm in diameter, wherein the positive grid 110 is made of lead-calcium alloy, and has a thickness of 100 μm, a length of 1480mm, and a height of 138 mm; the negative grid 210 is made of metal lead, and has a thickness of 80 μm, a length of 1480mm and a height of 138 mm; the coating thickness of one side of the positive electrode coating 120 is 80 μm, and the coating height is 136 mm; the coating thickness of one side of the negative electrode coating 220 is 70 mu m, and the coating height is 136 mm; the thickness of the first and second diaphragms 300 and 400 is 200 μm; the assembly pressure was 50 MPa.
The actual test weight of the battery monomer is 546g, the test capacity of 0.5c is 20.8Ah, the theoretical active material utilization rate is 65.4%, and the weight specific energy is 76.2Wh/Kg, so that the performance of the lead-acid storage battery is greatly improved compared with the traditional lead-acid storage battery.
Example two
With reference to fig. 1 and fig. 4 to fig. 6, the invention also discloses a production method of the lead-acid storage battery with high specific energy, which comprises the following steps:
s1 preparation of positive and negative plates
Coating a positive electrode coating on the surface of a continuous film-shaped positive electrode grid to obtain a positive plate with the thickness of no more than 300 mu m, and coating a negative electrode coating on the surface of a continuous film-shaped negative electrode grid to obtain a negative plate with the thickness of no more than 300 mu m;
s2, preparing battery cell
Rolling the prepared positive plate and the prepared negative plate into a column shape in a folding and stacking mode, isolating the positive plate and the negative plate by using a first diaphragm and a second diaphragm, and connecting a column-shaped pole group formed by folding and stacking with a positive terminal and a negative terminal to obtain a battery cell;
s3, preparing battery monomer
And (3) putting the battery core into a battery shell, performing acidification formation, and capping with positive and negative cover plates to obtain a battery monomer.
In step S1, the positive grid has a thickness of 10 to 200 μm, the negative grid has a thickness of 8 to 200 μm, the positive plate and the negative plate both have a thickness of 18 to 300 μm, the coating height of the positive coating is lower than the height of the positive grid to leave a positive tab connection section, the coating height of the negative coating is lower than the height of the negative grid to leave a negative tab connection section, and the positive coating and the negative coating are slurries formed by mixing at least lead powder, positive and negative additives, sulfuric acid and pure water.
In step S2, tabs are led out through the positive tab connection section and the negative tab connection section, or the positive tab connection section and the negative tab connection section of the stacked columnar electrode group are connected together, and then welded to the positive and negative terminals, so as to obtain the battery cell.
The battery pack can be formed by connecting the battery cells prepared in the step S3 in series or in parallel. Fig. 5 and 6 show a battery pack formed by connecting in series, and in this embodiment, 7 battery cells are used to form the battery pack. The actual test weight of the storage battery pack is 4487g, the test capacity at 0.5c is 20.6Ah, the theoretical active substance utilization rate is 64.9 percent, and the gravimetric specific energy is 64.3 Wh/Kg. It is known that the performance of a battery pack including a plurality of lead-acid batteries is also greatly improved.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The high-specific-energy lead-acid storage battery is characterized by comprising a positive plate, a negative plate, a first diaphragm and a second diaphragm, wherein the first diaphragm, the positive plate, the second diaphragm and the negative plate are sequentially stacked and then folded to form a columnar electrode group, the positive plate comprises a film-shaped positive plate grid and a positive coating, the positive coating is coated on the front surface and the back surface of the positive plate grid respectively, the negative coating is coated on the negative plate grid and the back surface of the negative plate grid respectively, the thicknesses of the positive plate and the negative plate are not more than 300 mu m, and the positive coating and the negative coating are formed by coating active substances.
2. The lead-acid battery of claim 1, wherein the folding to form the columnar electrode groups includes, but is not limited to, winding and continuous folding, the positive and negative plates each have a thickness of 18-300 μm, the positive grid has a thickness of 10-200 μm, and the negative grid has a thickness of 8-200 μm.
3. The high specific energy lead-acid battery of claim 1 wherein the positive coating is applied at a height less than the height of the positive grid to leave a positive tab connection and the negative coating is applied at a height less than the height of the negative grid to leave a negative tab connection.
4. The high specific energy lead-acid battery of claim 1 wherein the positive and negative grids include, but are not limited to, perforated, non-porous structures and the positive and negative grids are made of materials including, but not limited to, lead foil, lead alloy foil, plastic and lead/lead alloy composite films.
5. The lead-acid battery of claim 1, wherein the positive and negative electrode coatings are formed by coating at least a slurry formed by mixing lead powder, positive and negative electrode additives, sulfuric acid and pure water, and the first and second separators include but are not limited to glass fiber separators, microporous plastic separators and non-woven fabrics.
6. The lead-acid battery of claim 1, further comprising a battery case, wherein the stacked columnar electrode groups are enclosed in the battery case, the shape of the battery case includes but is not limited to a cylinder, an elliptic cylinder, and a rectangular parallelepiped, and the battery case is made of an insulating material including but not limited to ABS engineering plastic, PP plastic, PC plastic, and a composite material thereof.
7. A production method of a lead-acid storage battery with high specific energy is characterized by comprising the following steps:
s1 preparation of positive and negative plates
Coating a positive electrode coating on the surface of a continuous film-shaped positive electrode grid to obtain a positive plate with the thickness of no more than 300 mu m, and coating a negative electrode coating on the surface of a continuous film-shaped negative electrode grid to obtain a negative plate with the thickness of no more than 300 mu m;
s2, preparing battery cell
The prepared positive plate and the prepared negative plate are formed into a column shape in a folding mode, the positive plate and the negative plate are isolated by a first diaphragm and a second diaphragm, and a column-shaped pole group formed by folding is connected with a positive terminal and a negative terminal to obtain a battery cell;
s3, preparing battery monomer
And (3) putting the battery core into a battery shell, performing acidification formation, and capping with positive and negative cover plates to obtain a battery monomer.
8. The method of claim 7, wherein in step S1, the positive plate grid has a thickness of 10-200 μm, the negative plate grid has a thickness of 8-200 μm, the positive and negative plates have a thickness of 18-300 μm, the positive coating is applied at a height lower than the positive plate grid to leave a positive tab connection section, the negative coating is applied at a height lower than the negative plate grid to leave a negative tab connection section, and the positive and negative coatings are slurries formed by mixing at least lead powder, positive and negative additives, sulfuric acid and pure water.
9. The method of claim 7, wherein in step S2, the tabs are led out through the positive tab connection section and the negative tab connection section, or the positive tab connection section and the negative tab connection section of the stacked columnar electrode group are respectively connected together and then welded to the positive and negative terminals to obtain the battery cell.
10. The method of claim 7, wherein the cells obtained in step S3 are connected in series or in parallel to form a battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317210.5A CN112310411A (en) | 2020-11-23 | 2020-11-23 | High-specific-energy lead-acid storage battery and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011317210.5A CN112310411A (en) | 2020-11-23 | 2020-11-23 | High-specific-energy lead-acid storage battery and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112310411A true CN112310411A (en) | 2021-02-02 |
Family
ID=74334357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011317210.5A Pending CN112310411A (en) | 2020-11-23 | 2020-11-23 | High-specific-energy lead-acid storage battery and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112310411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328066A (en) * | 2021-04-20 | 2021-08-31 | 天能电池集团股份有限公司 | Lead storage battery and preparation method thereof |
| CN115692871A (en) * | 2022-10-27 | 2023-02-03 | 安徽艾克瑞德科技有限公司 | Lead-carbon battery structure convenient for filling colloidal electrolyte |
-
2020
- 2020-11-23 CN CN202011317210.5A patent/CN112310411A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328066A (en) * | 2021-04-20 | 2021-08-31 | 天能电池集团股份有限公司 | Lead storage battery and preparation method thereof |
| CN115692871A (en) * | 2022-10-27 | 2023-02-03 | 安徽艾克瑞德科技有限公司 | Lead-carbon battery structure convenient for filling colloidal electrolyte |
| CN115692871B (en) * | 2022-10-27 | 2023-06-13 | 安徽艾克瑞德科技有限公司 | Lead-carbon battery structure convenient for filling colloid electrolyte |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10868337B2 (en) | Cell-core for lithium slurry battery, and lithium slurry battery module | |
| CN107305942B (en) | Winding type negative plate, battery cell with same and lithium slurry battery | |
| US4037031A (en) | Bipolar lead acid battery having titanium and zirconium electrode supports | |
| Krivik et al. | Electrochemical energy storage | |
| CN112310411A (en) | High-specific-energy lead-acid storage battery and production method thereof | |
| CN202150519U (en) | Lithium ion secondary battery without polar ears | |
| CN112072006A (en) | Battery and manufacturing method thereof | |
| CN111799471A (en) | Current collector, preparation method of current collector, solid-state battery and automobile | |
| CN112133885A (en) | Battery core and secondary battery with three-layer pole piece structure | |
| CN114171771B (en) | Laminated power battery and preparation method and application thereof | |
| CN117497771A (en) | Electrode plate and secondary battery | |
| CN112838219A (en) | EFB start-stop battery for PHEV (Power electric vehicle) and manufacturing process | |
| CN209641774U (en) | Single rechargeable battery, rechargeable battery pack and rechargeable battery pack | |
| CN214012978U (en) | High-specific-energy lead-acid storage battery | |
| CN115986052A (en) | High-capacity winding type battery and preparation method thereof | |
| CN216120429U (en) | Battery core pole piece and laminated battery core structure | |
| CN116247280A (en) | Winding cell structure and secondary battery | |
| CN115911506A (en) | Cylindrical lithium metal secondary battery | |
| CN215184061U (en) | Current collector-free battery core and energy storage device | |
| CN212485423U (en) | Battery with a battery cell | |
| CN201421861Y (en) | High magnification quick charging and discharging soft packed lithium secondary battery | |
| CN212934705U (en) | Lead-acid storage battery | |
| CN203134910U (en) | Lithium ion secondary battery | |
| CN111029665A (en) | Flat-plate winding type lead storage battery and preparation method thereof | |
| CN202058814U (en) | Circular lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |