CN2509736Y - Lead alloy fibre grid high energy sealed colloid lead-acid battery - Google Patents

Abstract

The utility model relates to a lead alloy lead-acid accumulator with a fabric slab lattice and a high effect seal gum. The accumulator comprises a battery shell, battery end caps, a positive plate, a negative plate, a baffle board, electrolyte, a positive pole pillar, a negative pole pillar, a positive terminal, a negative terminal, a safety valve and a coupling part. The utility model is characterized in that a Pb- Ca- Sn- Al alloy slab lattice is employed on the positive plate. A pole-ear, frames, ribs and the lead alloy are installed in the slab lattice, a slice-mesh structured slab lattice which is axially and compositely weaved by a Pb- Ca- Sn- Al alloy slice is employed on the negative plate, a pole ear is arranged on the slab lattice, and silicate colloid electrolyte is employed as the electrolyte. The utility model has the advantages of large capacity, long durability and competence of low-temperature starting. Simultaneously, the utility model avoids environment pollution and facilities-corrosion of the acid mist, and layered-phenomenon. Further the utility model is capable of being inverted freely.

Description

High-energy sealed colloidal acid-lead battery with lead alloy fiber grid

The utility model relates to a kind of high-energy sealed colloidal acid-lead battery with lead alloy fiber grid.

In modern humans society, storage battery has become the indispensable part of all trades and professions as the mobile energy.In panoramic storage battery, because lead acid accumulator has advantages such as electric current is big, cell tension is high, material is easy to get, low price, so it is lasting all the time over more than 100 years, volume of production and marketing accounts for first in the storage battery all the time, but because its volume is big, heavy, self discharge is big, the life-span is short, specific energy is low, the fail safe used is unreliable, shortcoming such as acid mist is arranged, restricted its application in a lot of fields.

For the performance and the operating characteristic that improve lead acid accumulator, number of research projects has been done by various countries, has worked out the cathode absorption type sealed lead acid storage battery in middle nineteen sixties, and the seventies is produced sealed cell in a large number.The research of sealed cell successfully makes ancient lead acid accumulator increase vigor, and the demand of this battery is once increased with the annual growth of 30%-40%, has arrived the eighties and has just reached balance after mid-term.As the U.S., Japan, West Germany, Britain, France or the like country, seriation of this sealed lead acid battery product and commercialization.

The Research on Small Sealed Lead work of China is started late, but growth momentum is very violent, many producers have introduced the equipment and the technology of level nineties in the world, and sealed cell has replaced most traditional lead acid accumulators, and application is also constantly enlarging.In sealed lead acid storage battery, determining battery quality, as: performance index such as battery capacity, gravimetric specific energy, useful life, standard cycle number of times mainly are the grid and the electrolyte of battery.Select good alloy material for slab lattice and grid structure, the utilance of the conductivity that improves pole plate, active material, decay resistance etc. are had good facilitation.Domestic present grid mainly is to adopt forging type, and electrode plate structure is also nothing more than two kinds of common tubular type and paste spread types.Deficiencies such as exist pole plate specific mass height, capacity is little, and specific energy is low, and it is short to recycle the life-span, and the charging interval is long.The external general lightweight grid that uses, the material of grid alloy mainly contain lead-antimony alloy, low antimony alloy, lead-calcium alloy, lead strontium alloy four big series.Lead-antimony alloy is a typical material of making lead acid accumulator plate grid and bone core, accepts extensively for The Storage Battery Industry in China always.Its advantage is: tensile strength, ductility, hardness and crystal grain invigoration effect obviously are better than pure lead, have casting character preferably, and grid flexible type not when charge and discharge cycles corrodes more evenly than pure lead, with active material adhesion is preferably arranged.In the lead-antimony alloy antimony content initial higher be 7%-12%.Be extensive use of Sb4%-6% at present, even it is lower, but the shortcoming that lead-antimony alloy exists is: the resistance of lead-antimony alloy is big, antimony during charging in the anode plate grid is dissolved in the electrolyte, enter to shift and be deposited on the negative electrode active material, significantly reduce the overpotential that the negative pole of hydrogen is separated out, a part of antimony is adsorbed on the positive active material, also reduced the overpotential that oxygen is separated out at positive pole, effusion toxic gas SbH when overcharging ₃, and the anode plate grid corrosion rate improves with the increase of antimony content in the alloy, and the shortcoming of low antimony alloy is: grid is easy to generate crackle; Its advantage of lead-calcium alloy is that resistance is less, liberation of hydrogen overpotential height, self discharge is little, but because UPS battery and the used grid of some valve-control storage batteries are thinner, the application of endless form is arranged again in addition, the shortcoming of Pb-Ca alloy has just given prominence to like this, creep-resistant property is poor, calcium generation oxidation in casting process, thus the calcium loss is serious, content is wayward, and deep-circulating performance is poor; The shortcoming of lead strontium alloy is when being higher than 37.8 ℃, and the trend of deliquescing was arranged after exposure a period of time, and price is also cheap not as good as plumbous calcium series.Aspect electrolyte, at present, what generally adopt is liquid electrolyte, and its shortcoming is that electrolyte is prone to lamination, has acid mist to overflow, and the life-span of battery is short.

The purpose of this utility model is to provide a kind of have novel grid and electrolytical high-energy sealed colloidal acid-lead battery with lead alloy fiber grid for the problem that solves above-mentioned existence.

The purpose of this utility model realizes in the following manner:

The utility model comprises battery case, end cover for battery cells, positive plate, negative plate, dividing plate, electrolyte, Positive Poles, negative pole pole, positive terminal, negative terminal, safety valve, coupling part, it is characterized in that: positive plate adopts lead alloy fibrofelt grid, be provided with lug, frame, rib and lead alloy fiber in the grid, negative plate adopts the grid of the coaxial composite braided screen net structure of lead alloy silk, grid is provided with lug, and electrolyte adopts silicate colloid electrolyte.

The utility model has the advantages that: the capacity that 1, has improved product, anode plate grid is made the active material collector with the lead alloy fibrofelt, its fiber surface area is more a lot of greatly than the surface area of common grid, so active material utilization height, the corresponding raising of capacity, and can fully contact with active material,, make it discharge capacity and give full play to so the internal resistance of this kind pole plate is littler than normal pole plate; And negative electrode grid adopts the composite braided grid of lead alloy, have equally in light weight, surface area is big and the advantage of active material full contact, therefore, under the constant situation of maintenance pole plate weight, can improve the capacity of storage battery greatly; 2, improved life of product, lead alloy of the present utility model is special alloy material, and its corrosion resistance is stronger than general alloy, and the lattice of alloy lattice force of gravity casting alloy is tightr, therefore can obtain longer useful life; 3, colloidal electrolyte has improved the cold starting performance of storage battery, has avoided acid mist to the pollution of environment with to the corrosion of equipment simultaneously, has avoided the lamination of electrolyte, and product can arbitrarily be inverted.

The utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of anode plate grid;

Fig. 3 is the structural representation of negative electrode grid.

With reference to accompanying drawing, the utility model comprises battery case 11 (being electric groove), end cover for battery cells 10, positive plate 7, negative plate 8, dividing plate 6, electrolyte 12, Positive Poles 4, negative pole pole 5, positive terminal 9, negative terminal 3, safety valve 2, coupling part 1, positive plate 7 adopts lead alloy fibrofelt grid, used alloy material is the Pb-Ca-Sn-Al alloy, adopt extruding method to make lead alloy fiber between the 0.25-0.40mm alloy material, on the fiber filament cutter, plumbous fiber is cut into the short fiber that length is 50D-100D, the lead alloy fiber is being spread the upper berth felt moulding of felt machine, can produce the lead alloy fibrofelt of different specification size according to different needs, the shaping fiber felt is carried out sintering in sintering furnace, make and contact between the lead fiber silk firmly, conduct electricity very well, adopt deionized water to clean on this kind felt, after employing is colded pressing and is reached 45% above porosity, carry out hot pressing again, in pressing mold, produce grid rib 15, fiber grid is put into the casting frame cast out frame 14 and lug 13 with the casting ear mold, 16 is the lead alloy fiber in accompanying drawing 2; Negative electrode grid 8 adopts the silk screen grid, and used alloy material is the Pb-Ca-Al alloy, and it is thread that alloy material is made fiber, adopt coaxial combination process, alloy material is made the composite alloy silk, adopt weaving to make silk screen then, in mold, cast out lug 17 at last; Electrolyte 12 is a silicate colloid electrolyte, adopts gas phase SiO ₂Method is made.

Claims (3)

1, a kind of high-energy sealed colloidal acid-lead battery with lead alloy fiber grid, comprise battery case, end cover for battery cells, positive plate, negative plate, dividing plate, electrolyte, Positive Poles, negative pole pole, positive terminal, negative terminal, safety valve, coupling part, it is characterized in that: positive plate adopts lead alloy fibrofelt grid, be provided with lug, frame, rib and lead alloy fiber in the grid, negative plate adopts the grid of the coaxial composite braided screen net structure of lead alloy silk, grid is provided with lug, and electrolyte adopts silicate colloid electrolyte.

2, storage battery according to claim 1, the alloy material that it is characterized in that the positive plate grid is Pb-Ca-Sn-Al, the alloy material of negative electrode grid is Pb-Ca-Al.

3, storage battery according to claim 1 is characterized in that positive plate grid porosity is more than 45%.

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