CN110707368A - Electrolyte-layering-resistant storage battery pole group and lead storage battery - Google Patents
Electrolyte-layering-resistant storage battery pole group and lead storage battery Download PDFInfo
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- CN110707368A CN110707368A CN201910859859.0A CN201910859859A CN110707368A CN 110707368 A CN110707368 A CN 110707368A CN 201910859859 A CN201910859859 A CN 201910859859A CN 110707368 A CN110707368 A CN 110707368A
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- battery
- polar plate
- storage battery
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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
- H01M10/122—Multimode batteries
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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
- H01M10/14—Assembling a group of electrodes or separators
-
- 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
Abstract
The invention discloses a storage battery pole group resisting electrolyte stratification and a lead storage battery. The polar plate of battery utmost point crowd divide into a plurality of sections in vertical direction, is equipped with the extruded article between two adjacent sections, the extruded article is equipped with the spliced pole that passes the polar plate including two extrusion strips of locating the polar plate both sides on one of them extrusion strip, be equipped with on another extrusion strip with spliced pole complex connecting hole, the extruded article is equipped with the sand grip of extrusion baffle when assembling with baffle contact one side. The two convex strips on the extrusion pieces on the adjacent positive and negative plates of the storage battery electrode group just oppositely extrude the partition board, so that the partition board is excessively extruded at the corresponding convex strips to prevent the electrolyte from transferring up and down in the partition board, thereby relieving the problem of electrolyte acid stratification and being beneficial to the service life of the battery.
Description
Technical Field
The invention relates to the technical field of lead storage batteries, in particular to a storage battery pole group capable of resisting electrolyte stratification and a lead storage battery.
Background
The lead accumulator belongs to reversible DC power supply, and can convert chemical energy into electric energy and also convert electric energy into chemical energy. The lead storage battery mainly comprises electrolyte, a battery jar and a polar group, wherein the electrolyte of the lead storage battery is sulfuric acid solution, the polar group mainly comprises a positive plate, a negative plate and a partition plate, and the partition plate mainly stores the electrolyte and serves as a gas channel for compounding oxygen to prevent active substances from falling off and prevent short circuit between the positive and negative electrodes.
In the production and processing process of the storage battery, the grid is used as a carrier and a conductor of the lead plaster, the lead plaster can be used as a polar plate only after being filled and coated on the grid and cured and dried, the polar plate is the core of the lead storage battery, and the grid is just like a framework and has direct influence on the strength and the service life of the whole polar plate.
Although lead storage batteries have been widely used in various fields of use for over 150 years, many researchers of storage batteries still conduct offensive research on various problems, and search for better application schemes from raw materials, assembly modes, use modes and the like of the storage batteries.
Electrolyte stratification is one of the main causes of service life failure of lead storage batteries, and particularly, the problem of electrolyte stratification is serious in the design of a polar plate with a large height-width ratio, such as a 6-DZF-20 battery.
The invention patent application with publication number CN108493493A discloses an anti-layering colloid electrolyte for a lead-acid storage battery, which comprises the following raw materials: 36% of sulfuric acid; 0.45% of meteorological silica; 0.06-0.065% of lithium sulfate; 0.008-0.012% of methyl cellulose; 0.001-0.0015% of polyaspartic acid amine sodium salt; deionized water and the balance. According to the technical scheme, the layering condition of the electrolyte is improved by optimizing the components of the electrolyte.
The invention patent application with publication number CN106848413A discloses a lead storage battery electrode group, which comprises a positive electrode plate, a negative electrode plate and a separator arranged between the positive electrode plate and the negative electrode plate, wherein the separator is formed by laminating a first separator paper in the middle and second separator papers on two sides, the first separator paper is made of glass fiber with the diameter of 3-10 mu m, and the BET specific surface area of the first separator paper is 0.3m2/g～0.8m2A second separator paper made of glass fiber with a diameter of 0.2-3 μm and a BET specific surface area of 0.8m2/g～1.8m2(ii) in terms of/g. According to the technical scheme, the electrolyte layering condition is improved by improving the structure of the separator.
Disclosure of Invention
The invention provides a storage battery pole group for resisting electrolyte delamination and a lead storage battery, aiming at improving the electrolyte delamination condition of the lead storage battery, and the aim of improving the electrolyte delamination is achieved by improving the structure of a pole plate.
The utility model provides an anti electrolyte layering's battery utmost point crowd, includes interval arrangement's positive plate, negative plate and is used for with positive plate and negative plate spaced apart baffle, and the top of polar plate is equipped with utmost point ear, and the polar plate divide into a plurality of sections in vertical direction, is equipped with the extruded article between two adjacent sections, the extruded article is equipped with the spliced pole that passes the polar plate including two extrusion strips of locating the polar plate both sides on one of them extrusion strip, be equipped with on another extrusion strip with spliced pole complex connecting hole, the extruded article is equipped with the sand grip of extrusion baffle when the assembly with baffle contact one side.
Reference to plates in this application is meant to include both positive and negative plates. The side of the pole lug of the pole plate is the upper end, under normal conditions, the pole lug is positioned above the pole lug when in use, the pole plate is vertically placed, and the vertical direction of the pole plate refers to the height direction of the pole plate when in vertical placement. The extrusion piece is equipped with the sand grip of extrusion baffle when the assembly with baffle contact one side, because the polar plate that is located utmost point crowd both sides only inboard and baffle contact, and the outside does not have the baffle, so only be located utmost point crowd inboard on the corresponding extrusion piece and have the sand grip, and the outside does not set up the sand grip.
Preferably, the polar plate is divided into 2-3 sections in the vertical direction. More preferably, the pole plate is divided into 2 sections in the vertical direction, and the height of the upper section is the same as that of the lower section.
Preferably, the polar plate comprises a grid and lead paste coated on the grid, and the grid comprises frame ribs and transverse ribs and vertical ribs which are arranged in the frame ribs and are staggered in a crisscross mode; the adjacent two sections of the polar plate are arranged at intervals and are provided with connecting pieces for connection, and the connecting pieces and a grid of the polar plate are integrally formed. The connecting piece is connected with the grid integrally formed connecting piece, so that the strength of the polar plate and the conduction of current between different sections of the polar plate are guaranteed, and the connecting piece and the grid are integrally formed, so that the manufacturing is convenient.
More preferably, the connecting sheets for connecting two adjacent sections of polar plates comprise a plurality of connecting sheets which are uniformly distributed, and the total cross-sectional area of the connecting sheets is not less than that of the vertical ribs of the grid. The total cross-sectional area of the connecting pieces refers to the sum of the cross-sectional areas of a plurality of connecting pieces which connect the two sections of polar plates under the same height. One function of grid ribs is used for conducting current during charging and discharging, and the total cross-sectional area of the connecting piece cannot be too small because the polar plate needs to conduct current in the vertical direction, so that the conduction of the current among all sections in the polar plate can be influenced.
More preferably, the number of the connecting sheets for connecting the two adjacent sections of the polar plates is 2-5.
More preferably, two extrusion strips forming the same extrusion part are abutted on the inner side after assembly, the outer side of the two extrusion strips is flush with the surface of the polar plate, the inner side of the two extrusion strips is provided with an avoiding groove for avoiding the connecting sheet, and the outer side of the two extrusion strips is provided with the convex strip.
Preferably, the partition board is extruded by the aid of convex strips on adjacent extrusion pieces in a matched mode, and the thickness of each convex strip is 1/5-2/5 of the distance between the adjacent positive plates and the adjacent negative plates.
Further preferably, the cross-sectional shape of the convex strip is trapezoidal.
More preferably, the height of the connecting sheet is 2-6 mm.
The invention also provides a lead storage battery comprising the storage battery pole group.
The storage battery pole group capable of resisting electrolyte stratification is characterized in that the pole plate is divided into a plurality of sections in the vertical direction, an extrusion piece is arranged between every two adjacent sections, one side of the extrusion piece, which is in contact with the partition plate, is provided with a convex strip for extruding the partition plate during assembly, when the pole group is assembled, the two convex strips on the extrusion pieces on the adjacent positive and negative pole plates just oppositely extrude the partition plate, so that the partition plate is excessively extruded at the corresponding convex strip position, electrolyte is prevented from transferring up and down in the partition plate, the problem of electrolyte acid stratification is relieved, and the service life of a battery is prolonged.
Drawings
Fig. 1 is a schematic perspective view of a battery plate group according to the present invention.
Fig. 2 is a schematic side view of a battery plate group according to the present invention.
Fig. 3 is a partial enlarged view of a in fig. 2.
Fig. 4 is a schematic diagram of an exploded structure of a plate and extrusion.
Fig. 5 is an exploded view of an extrusion.
Fig. 6 is an exploded view of another perspective of an extrusion.
Detailed Description
As shown in fig. 1 to 6, an electrolyte-layering-resistant storage battery electrode group comprises positive plates 1 and negative plates 2 which are arranged at intervals, and a separator 3 used for separating the positive plates 1 from the negative plates 2, wherein the positive plates 1 are fewer than the negative plates 2, the outermost two positive plates are the negative plates 2, and the thickness of the positive plates 1 is thicker than that of the negative plates 2. The positive electrode plate 1 and the negative electrode plate 2 are structurally the same except for the difference in thickness, so in the present embodiment, the positive electrode plate 1 and the negative electrode plate 2 are collectively referred to as a "plate" for explaining the specific structure of the plate in detail.
The top of polar plate is equipped with utmost point ear 6, and the utmost point ear 6 side of polar plate is the upper end, and under the general condition, utmost point ear 6 is located the top when using, and the polar plate is vertical to be placed, and the vertical direction of polar plate means the direction of height when the polar plate is vertical to be placed. The polar plate is divided into a plurality of sections in the vertical direction, the polar plate is divided into 2-3 sections in the vertical direction in a preferred embodiment, the polar plate is divided into 2 sections in the vertical direction in an optimal embodiment, and the height of the upper section and the lower section is the same. As shown in fig. 4 to 6, the upper section 4 and the lower section 5 of the pole plate are separated by a certain distance and connected by a connecting piece 7. An extrusion part 8 is arranged between the upper section 4 and the lower section 5 of the polar plate, the extrusion part 8 comprises two extrusion strips 9 arranged on two sides of the polar plate, one of the extrusion strips 9 is provided with a connecting column 10 penetrating through the polar plate, the other extrusion strip 9 is provided with a connecting hole 11 matched with the connecting column 10, and the extrusion part 8 is provided with a convex strip 12 which extrudes the partition plate 3 when being assembled on one side contacting with the partition plate 3. The extrusion piece 8 is equipped with the sand grip 12 of extrusion baffle 3 when the assembly in the one side of contacting with baffle 3, because the polar plate that is located utmost point crowd both sides only inboard contacts with baffle 3, and the outside does not have baffle 3, so only be located utmost point crowd inboard on the corresponding extrusion piece 8 and have sand grip 12, and the outside does not set up sand grip 12. The axial length of the extrusion strips 9 is consistent with the width of the polar plate, the axial length of the convex strips 12 is consistent with the axial length of the extrusion strips 9, and the width direction of the partition plate 3 is slightly longer than that of the polar plate, so that the parts of the two sides of the width direction of the partition plate 3, which protrude out of the polar plate, are not extruded by the convex strips 12, electrolyte can circulate, and the acidification step is not influenced.
The polar plate comprises a grid and lead paste coated on the grid, and the grid comprises frame ribs, and transverse ribs and vertical ribs which are arranged in the frame ribs and are criss-cross; the adjacent two sections of the polar plate are arranged at intervals and are provided with connecting pieces 7 for connection, and the connecting pieces 7 and the grid of the polar plate are integrally formed. The connecting piece 7 integrally formed with the grid is connected, the strength of the polar plate and the conduction of current between different sections of the polar plate are guaranteed, and the connecting piece 7 and the grid are integrally formed, so that the manufacturing is convenient.
The connecting pieces 7 for connecting the upper section 4 and the lower section 5 of the polar plate comprise a plurality of connecting pieces which are uniformly distributed, and the total cross sectional area of the connecting pieces is not less than that of the vertical ribs of the grid. The total cross-sectional area of the connecting pieces 7 refers to the sum of the cross-sectional areas of a plurality of connecting pieces 7 connecting two sections of polar plates at the same height. One function of the grid ribs is used for conducting current during charging and discharging, and the total cross-sectional area of the connecting sheet 7 cannot be too small because the polar plate needs to conduct current in the vertical direction, so that the conduction of the current among all sections in the polar plate can be influenced.
In a preferred embodiment, the number of connecting pieces 7 between the upper section 4 and the lower section 5 is 2-5. In the most preferred embodiment, the number of connecting pieces 7 between the upper section 4 and the lower section 5 is 3 (as shown in fig. 4). The height of the connecting sheet 7 is 2-6 mm.
Two extrusion strips 9 forming the same extrusion part 8 are abutted on the inner sides after assembly, the outer sides of the two extrusion strips are flush with the surface of the polar plate, the inner sides of the extrusion strips 9 are provided with avoidance grooves 13 for avoiding the connecting sheets 7, and convex strips 12 are arranged on the outer sides of the extrusion strips 9. The cross section of the convex strip 12 is trapezoidal, and the smaller bottom faces outwards.
The convex strips 12 on the adjacent extrusion pieces 8 are matched with the extruded partition plates 3, and the thickness of the convex strips 12 is 1/5-2/5 of the distance between the adjacent positive plates 1 and the negative plates 2.
The present application also provides a lead storage battery comprising a battery pole group as shown.
This application battery utmost point crowd of electrolyte layering is through being divided into a plurality of sections with the polar plate in vertical direction, be equipped with extruded article 8 between two adjacent sections, extruded article 8 is equipped with the sand grip 12 of extrusion baffle when the assembly in 3 contact one sides of baffle, when assembling into utmost point crowd, two sand grips 12 are just in time extrudeed baffle 3 relatively on the extruded article 8 on adjacent positive plate 1 and the negative plate 2, make baffle 3 in corresponding sand grip 12 department excessively extruded, it shifts from top to bottom in baffle 3 to hinder electrolyte, thereby the problem of electrolyte acid layering has been slowed down, it is favourable to battery life.
Claims (10)
1. The utility model provides an anti electrolyte layering's battery utmost point crowd, includes interval arrangement's positive plate, negative plate and is used for the positive plate and the separated baffle of negative plate, its characterized in that, the top of polar plate is equipped with utmost point ear, and the polar plate divide into a plurality of sections in vertical direction, is equipped with the extruded article between two adjacent sections, the extruded article is equipped with the spliced pole that passes the polar plate including two extrusion strips of locating the polar plate both sides on one of them extrusion strip, be equipped with on another extrusion strip with spliced pole complex connecting hole, the extruded article is equipped with the sand grip of extrusion baffle when the assembly with baffle contact one side.
2. The battery plate pack of claim 1, wherein the plate is divided into 2-3 segments in a vertical direction.
3. The battery plate group of claim 1, wherein the plate comprises a grid and lead paste coated on the grid, the grid comprises frame ribs and transverse ribs and vertical ribs arranged in the frame ribs in a criss-cross manner;
the adjacent two sections of the polar plate are arranged at intervals and are provided with connecting pieces for connection, and the connecting pieces and a grid of the polar plate are integrally formed.
4. The battery plate pack of claim 3, wherein the connecting pieces connecting two adjacent segments of the plates are uniformly distributed, and the total cross-sectional area of the connecting pieces is not less than that of the vertical ribs of the grid.
5. The battery plate group of claim 4, wherein the number of connecting pieces connecting two adjacent segments of the plates is 2-5.
6. The battery pole group of claim 4, wherein two extruded strips comprising the same extrusion abut on the inside after assembly, the outside is flush with the surface of the pole plate, the inside has an avoidance groove for avoiding the connecting piece, and the outside is provided with the raised strip.
7. The battery pole group of claim 6, wherein ribs on adjacent extrusions cooperate to extrude said separator, said ribs having a thickness of 1/5-2/5 of the spacing between adjacent positive and negative plates.
8. The battery pole group of claim 6, wherein the cross-sectional shape of said ribs is trapezoidal.
9. The battery pole group of claim 3, wherein the height of the connecting tab is 2-6 mm.
10. A lead-acid battery comprising the battery electrode group according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910859859.0A CN110707368B (en) | 2019-09-11 | 2019-09-11 | Electrolyte-layering-resistant storage battery pole group and lead storage battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910859859.0A CN110707368B (en) | 2019-09-11 | 2019-09-11 | Electrolyte-layering-resistant storage battery pole group and lead storage battery |
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| CN110707368A true CN110707368A (en) | 2020-01-17 |
| CN110707368B CN110707368B (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103461A (en) * | 2020-10-23 | 2020-12-18 | 建德希傅电子科技有限公司 | Storage battery protection device capable of preventing electrolyte from layering |
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| CN112103461A (en) * | 2020-10-23 | 2020-12-18 | 建德希傅电子科技有限公司 | Storage battery protection device capable of preventing electrolyte from layering |
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| CN110707368B (en) | 2021-06-01 |
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