CN202384440U

CN202384440U - Lead-acid storage battery assembled by lead-plastic compound grid cast frame screened and paste-coated polar plates

Info

Publication number: CN202384440U
Application number: CN2011204345883U
Authority: CN
Inventors: 李平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-07
Filing date: 2011-11-07
Publication date: 2012-08-15
Anticipated expiration: 2021-11-07

Abstract

The utility model discloses a lead-acid storage battery assembled by lead-plastic compound grid cast frame screened and paste-coated polar plates. Because of using a plastic grid, in the environment of repeatedly charging and discharging a battery for a long time, the plastic grid does not participate in an electrochemical reaction, so the problem of oxidative deterioration does not exist; and therefore, the long-term stable existence of the grid is ensured. Lead foils compounded on the two surfaces of a plastic substrate by coating are converted into lead dioxide conductors after electrochemical oxidation; and the conductors are firmly attached to the plastic substrate and are kept stably under the powerful action of an adhesive. The long-term conductive function of the grid is guaranteed; the grid-like structure of the grid is also guaranteed to be unchanged and stable for a long time; active materials attached to the grid are impossible to fall because of the supporting of the grid and the protection of screen cloth; and the active materials on an anode do not fall, and the conditions causing scrap of the lead-acid storage battery do not exist any longer, so that the service life of the battery is greatly prolonged along with the long-term stable existence of a positive plate.

Description

The lead acid accumulator of a kind of lead-plastic clad plate grid casting frame screening Tu cream pole plate assembling

Technical field:

The invention belongs to the lead acid accumulator technical field.

Background technology:

Special invention lead-sour battery had nearly 150 years so far from Pulan in 1859, along with science and technology development and people to the widening of its application, the structure of lead-acid battery, manufacturing approach and technology are updated and are perfect, the performance of battery improves a lot.Lead-acid battery is the maximum kind the widest with application of output in the secondary chemical sources of electric energy always.Monomer lead-sour battery is made up of positive plate, negative plate, sulfuric acid, dividing plate, housing and seal cover etc.Both positive and negative polarity welds respectively in groups; Comprise bus-bar and pole; Tu cream pole plate is the pole plate form that extensively adopts in the lead-sour battery; Advantages such as the utilance of big, the available heavy-current discharge of true specific area, active material with active material is high, manufacture craft is simple and cheap, but have also that mechanical strength is low, the charge and discharge process active material is prone to come off and shortcoming such as the life-span is short.We know that the grid that lead-sour battery industry uses mostly adopts lead-antimony alloy, lead-calcium alloy to establish die cast and form in the battery pole plates production process.Shown in figure (1); Grid is designed to frame structure, and its effect is (1) collector, i.e. frame and rib through grid compiles, distribution and conduction current.(2) support active material, promptly through the frame and the rib of grid, particularly horizontal rib plays a supportive role to active material.No matter be the lead-antimony alloy grid, or lead-calcium alloy slab lattice under anodal condition because the carrying out repeatedly of charge and discharge process, all bad reaction can take place for guaranteeing other metallic element that casting technique adds when the battery operate as normal, influence battery life.As material of main part-lead steady chemical structure under the negative pole condition of grid, no problem generation.Under anodal condition repeatedly discharge and recharge chemical reaction in, grid material itself carries out oxidation reaction; Molecule constantly absorbs water, drainage procedure; Molecular structure produces electrochemical change, and lead molecule progressively is converted into brown lead oxide, loses original rock-steady structure between material molecule; The structure Su Song that becomes, the intermolecular adhesion that loses.Externally have under the condition of vibrations; Being attached to active material on the rib festers with rib and comes off; The material that comes off is constantly accumulated at housing bottom, fill full just-negative plate between the slit, bottom cause short circuit between the battery positive and negative electrode, therefore battery loses function of use.This shows; Cause lead-short reason of sour battery life just to be; The one, the problem of oxidation of anode plate grid, the inner connectivity problem of shape material of living besides.

Summary of the invention:

We have proposed brand-new settling mode, " lead-acid battery of a kind of lead-plastic clad plate grid casting frame screening Tu cream pole plate assembling ".It selects the grid of lead-plastic composite materials as pole plate for use, and polypropylene nitrile screen cloth is the protection network that comes off, and it is characterized in that; Plate body material can be the polytetrafluoroethylene thin plate that thickness is no more than 1mm, with thickness be 0.10-0.15mm calendering lead foil.The interlayer of grid is a sheet plastic, and it is the lead foil of pure stereotype calendering that Tu glue is compounded in what mould the plate two sides, and grid is a kind of trilaminate material complex.Pure lead material guaranteed battery conductivity and with the adhesiveness of lead plaster, avoided battery simultaneously in use, the bad reaction that other metallic element produces when electrochemical reaction.Plastic in the interlayer has corrosion-resistant, oxidation resistant characteristic.Composite board forms composite grid behind cut-parts, stamping, founding fuses into one at the pure lead frame and the lead foil at grid edge, has guaranteed the electric conductivity of grid.The pure lead frame at screen edge can with other pole plate assembly welding in groups, guaranteed the manufacturability of grid, the adhesiveness of lead material and the lotion on surface is good.Be installed at the polypropylene nitrile screen cloth in the lead plaster during Tu cream, it is characterized in that; The screen cloth of selecting for use can be that longitude and latitude is not less than 1mm at interval, is not more than gauze or the screen cloth of 2mm.After drying be coated with firm being condensated as a whole of cream.Adopt the lead-sour battery of this kind method assembling, pole plate is because the matrix of grid is plastics, and plastics are not participated in chemical reaction at sour environment; Especially under lead-sour anode part repeated charge environment, do not participate in electrochemical reaction, do not have the oxidation deterioration situation to take place, Tu glue is compound in the lead foil of moulding the plate two sides; Slowly be converted into brown lead oxide after the electrochemical reaction; Because the existence of adhesive, it is constant that material has become bond effect, and bonding material on it can not come off.So grid material Stability Analysis of Structures.Because the polypropylene nitrile screen cloth material that is installed in the lotion also is plastics, does not participate in electrochemical reaction, Stability Analysis of Structures equally.These two stable normal long-term uses that guaranteed lead-sour battery.The grid main body is used plastics instead simultaneously, and consumption of lead greatly reduces, and the battery finished weight is corresponding to be alleviated.The serviceability of lead-sour battery is constant, the life-span prolongation.

Description of drawings:

Fig. 1 is original plumbous antimony-plumbous calcium grid structural representation.

Fig. 2 is lead-plastic clad plate grid material structural representation.

Fig. 3 is the plumbous border structure sketch map of casting.

Fig. 4 is lead-plastic clad plate grid overall structure sketch map.

Fig. 5 is a polypropylene nitrile screen cloth structural representation.

Fig. 6 is the electrode plate structure sketch map that forms behind the grid Tu cream screening.

Embodiment:

At first we select the polytetrafluoroethylene rolling sheet material of wide 500mm, thick 1mm for use, the calendering lead foil coiled material of wide 500mm, thick 0.10-0.15mm, and it is compound on the press mold machine, to carry out single face Tu glue, processes single face lead and moulds composite sheet.Turning over, it is compound to carry out Tu glue at the another side of thin plate with the calendering lead foil coiled material of the thick 0.10-0.15mm of wide 500mm, processes three-layer composite board.Cut in flakes by certain specification then.The good punch die of installation and design on punch press, punching out go out the lead-plastic clad plate grid of shape.Shown in figure (2): the front of grid is the geometric surface that regular hexagon that to wash away n the length of side be 2mm appears after partly; The muscle of grid is wide for 1mm can see that from figure (2) f-f grid middle (1) is the polytetrafluoroethylene material, and its both sides (2) are firm compound calendering lead foils on it behind the Tu glue.We have obtained a slice and not only can conduct electricity but also oxidation resistant plumbous plastic clad plate grid from the material of institute's materials used.Leave nonconducting plastic cross section on the not enough section that is, punches out, we are grid dipping conducting resinl, dry laggard electroplating, and just having obtained surperficial after lead plating is accomplished all is the composite grid of plumbous material.Next step establishes mould with plumbous casting grid frame.Shown in figure (3); Grid top after casting is accomplished be cast with assembly welding sheet (3) can with battery bus-bar assembly welding in groups, the frame of grid (4) is a central slot shape, the position that reserves is just in time moulded grid with lead and is loaded on wherein that founding is integral.Composite grid after casting is accomplished can find out that (1) is polytetrafluoroethylene sheet material like figure (4) on scheming, (2) are that Tu glue is compound in the calendering lead foil on the sheet material, and (3) are plumbous matter assembly welding sheets, and (4) are the plumbous frames of casting.Plumbous plastic clad plate grid have been arranged, and what next step carried out is Tu cream on grid, and Tu cream prolongs the method with in the past, different shown in figure (5); On good, the not dried cream face of Tu, add multiple polypropylene nitrile screen cloth, add and to cut out good screen cloth by specification when multiple and be pressed into the following 0.5mm of cream face gently, surperficial lotion is wipeed off got final product then with spatula.Add to answer and add multiple another side again into simultaneously turning over.Pole plate after the completion is shown in figure (6); (1) polytetrafluoroethylene grid, (2) are compound in calendering lead foil on the grid, (3) plumbous casting assembly welding sheet, (4) grid frame, (5) and sink to polypropylene nitrile screen cloth, the lotion of (6) Tu on grid in the cream.The pole plate that adds after multiple screen cloth is accomplished drenches acid or pickling processing, and remaining operation is identical with the existing technology of electric material industry, no longer narration.Lead-sour battery with this pole plate assembling changes plastics into owing to the grid main body, the screening protection of active material surface, and prolong the useful life of lead-sour battery.

Claims

1. described " lead-acid battery of a kind of lead-plastic clad plate grid casting frame screening Tu cream pole plate assembling, it is characterized in that; The pole plate of forming battery is lead-plastic clad plate grid and the common composition of polypropylene nitrile screen cloth and lead plaster, and plate body material can be the polytetrafluoroethylene thin plate that thickness is no more than 1mm, with thickness be that 0.10-0.15mm rolls lead foil.

2. the lead-acid battery of a kind of lead according to claim 1-plastic clad plate grid casting frame screening Tu cream pole plate assembling, it is characterized in that; Polypropylene nitrile screen cloth can be that the longitude and latitude of yarn is not less than 1mm at interval, is not more than gauze or the screen cloth of 2mm.