31results about How to "Delayed softening and shedding" patented technology

The invention discloses a lead mesh grid for a lead storage battery and a preparation method of the lead mesh grid. The lead mesh grid is characterized by comprising a grid body formed by weaving warps and wefts, wherein the grid body at least comprises one independent grid; a lead mesh coating area formed by the grid body is arranged at the boundary of the independent grid, and thick plastic wires or thick lead wires are arranged in the weft direction of the grid body so as to form two side frames extending in the weft direction of the independent grid; and a lead mesh coating area formed bythe grid body is arranged at the boundary of the independent grid, and thick plastic wires or thick lead wires or a plurality of thin plastic wire twisted edges or hot melting wire twisted edges are arranged in the warp direction of the grid body so as to form two side frames extending in the warp direction of the independent grid. The lead mesh grid has the advantages that the use amount of leadis small, the grid is provided with the side frames, expansion of active substances can be limited in the charging and discharging process of the battery, positive and negative active substance contact short circuit and positive active substance softening and falling are not likely to happen, the service life of the battery is prolonged, and the grid is provided with tabs and does not need prefabricated busbars.

The invention provides a method for acid-free external formation of a lead-acid storage battery and the lead-acid storage battery. During the formation, a neutral electrolyte is used instead of a sulfuric acid electrolyte, which prevents acid mist pollution and avoids the contamination of the conventional external formation plate. Lead wastewater, while the conversion efficiency and plate quality are superior to the internal conversion process, and there is no waste acid generated in the internal conversion process, so as to achieve the purpose of saving energy and reducing emissions, and improving product quality.

The invention relates to the field of the lead acid storage battery, and discloses lead acid storage battery positive electrode lead paste containing calcium plumbate. The ingredients of the lead paste are as follows based on mass percentage: 71-89% of lead powder, 4-14% of sulfuric acid, 5-18% of water, 0.05-2% of short fibers and 0.5-5% of CaPbO3. The lead acid storage battery positive electrode lead paste provided by the invention can improve the formation efficiency, reduce softening and falling off of positive electrode active substances, improve the cold starting performance, improve the discharge capacity of the battery, and prolong the service life of the battery.

The invention belongs to the technical field of zinc-nickel batteries. The invention discloses a method for preparing a positive electrode of a high specific energy zinc-nickel battery, which comprises uniformly mixing raw material A and a thickener to prepare a slurry A, dissolving a divalent nickel compound in water to prepare an aqueous solution, adding the slurry A and Surfactant, stirring treatment to prepare slurry B, adding polytetrafluoroethylene to slurry B to prepare positive electrode slurry, putting the positive electrode base into the positive electrode slurry until it is completely submerged, taking it out after standing for a period of time, and making The positive electrode sheet of the battery is obtained, and the positive electrode of the zinc-nickel battery with high specific energy is obtained through post-processing. The invention can solve the problem that the positive electrode active materials of the high specific energy zinc-nickel battery are not tightly bonded, can reduce the softening and falling off of the positive electrode active material, can reduce internal resistance, improve the utilization rate of the active material, improve the charging acceptance capacity of the electrode, increase the battery capacity, Cycle life and charge-discharge conversion efficiency avoid early decay of battery capacity.

The invention provides a lead-carbon battery negative electrode paste, which comprises the following components in parts by mass: lead powder 1-99%; carbon-oxide composite material 0.1-90%; carbon black 0-0.5%; sulfuric acid Barium 0.1~2; short fiber 0.05~0.1; organic leavening agent 0.01~3.2. The oxides on the surface of the carbon material and in the pores of the lead paste are tightly adsorbed around the carbon material in the form of ions. During the curing and drying process, they are recombined on the surface and pores of the carbon material. "Dissolution-recombination" makes the carbon material more active. The surface and pores are evenly attached with tiny thin oxide layers, which greatly improves the bonding degree of carbon materials and oxides, fully exerts the electrical conductivity and capacitance characteristics of carbon materials, and limits hydrogen evolution on the surface of carbon materials.

The invention discloses a lead-calcium formation colloid electrolyte which is composed of the following components in percentage by weight: 0.8-5% of gas-phase silicon dioxide, 0.1-2% of sodium silicate, 1-2% of anhydrous sodium sulfate, 0.1-0.5% of stannous sulfate, 0.05-0.5% of sodium carboxymethyl cellulose, 0.02-0.5% of bismuth trioxide, 0.2-3% of phosphoric acid, 28-38% of sulfuric acid and the balance of water. The invention also discloses a preparation method of the lead-calcium formation colloid electrolyte. When being used for preparing a lead-calcium formation battery, the colloid electrolyte improves the early capacity attenuation effect of the lead-calcium formation battery, decelerates the softening shedding of the active substances at the positive pole, and prolongs the deep cycle service life of the battery. The colloid electrolyte disclosed by the invention has the advantages of favorable consistency, favorable colloid thixotropy and favorable colloid stability.

The invention discloses a positive plate of a lead-acid accumulator, which comprises a positive grid and is characterized in that the surface of the positive grid is coated with a carbon fiber compound substrate prepared by the mixture of carbon fiber and a corresponding matrix. The carbon fiber compound basement layer is coated with positive active materials prepared by lead ointment. A mixture comprising the components by weight of 10%-40% of carbon fiber, 10%-40% of graphite fiber, 10%-40% of anisotropic graphite, 5%-20% of carboxymethylcellulose and 10%-30% of polytetrafluoroethylene is prepared into a paste slurry to be coated on the surface of the positive grid and then is dried and cured to form the carbon fiber compound basement layer. As a carbon fiber compound substrate with high strength and high carrying capacity is coated on the positive grid, the invention enhances the structural strength of the positive plate, the dimensional stabilityand the creep resistance of the positive grid, thus greatly prolonging service life of the lead-acid accumulator.

The invention discloses a grid for a lead storage battery and a manufacturing method, and provides an electroplating carbon fiber lead mesh grid and a manufacturing method with simple process, low manufacturing cost, high production efficiency and good electrical conductivity, and solves the problems in the prior art. The existing warp and weft threads are all lead wires, the amount of lead is large, the cost is high, the process is complex, and the production efficiency is low. It includes a grid woven by several warp threads and weft threads. The filaments are distributed at intervals, the wefts are formed by carbon fiber filaments and weft plastic filaments, and there are gaps between adjacent warp threads and adjacent weft threads, and the surface of the carbon fiber filaments is covered with a lead-plated layer.

The invention discloses an enhanced positive plate of a power lead-acid storage battery. The positive plate comprises a positive plate grid. The positive plate is characterized in that a carbon fiber powder layer is sprayed and pressed on the active substance surface of the positive plate; since the positive plate of the battery is formed by spraying and pressing a carbon fiber powder layer on the active substance of the positive pole, the carbon fiber powder has higher specific strength and specific modulus, and each constituent of the carbon fiber dose not participate in the electrochemical reaction of the battery in the charging or discharging process of the battery, the positive plate has higher strength, high and strong carrying capacity and stronger creep deformation resistance, thus the structure strength and the size stability of the positive plate can be improved greatly, the active substance of the positive pole is not easy to soften and fall off, and the service life of the lead-acid storage battery can be prolonged consequentially.

The invention provides a lead-carbon battery negative electrode. The negative electrode comprises the following components in parts by mass: 85-115 parts by mass of lead powder; 0.5-15 parts of metal oxide; 0.1-40 parts of carbon material; 9-12 parts of sulfuric acid; 0.2-3 parts of barium sulfate; Sodium lignosulfonate 0-2.5; humic acid 0.1-3; short fiber 0.05-1, water 14-16, barium stearate 0.18-0.25. The negative electrode of the lead-carbon battery applies the composite material of heteroatom-doped zero-dimensional carbon material and one-dimensional carbon nano-conductive agent to the lead paste additive of the negative electrode of the lead-carbon battery, forming a three-dimensional network in the negative electrode, which can reduce the use of carbon materials. Increase the conductivity of the negative electrode of the battery and the utilization rate of the active material, and improve the charge acceptance and specific power of the lead-acid battery.

The invention discloses a positive plate reinforced lead-acid accumulator which comprises a positive plate and a negative plate. The invention is characterized in that a carbon fiber composite coating is coated on the active substance surface of the positive plate, and the carbon fiber composite coating is the mixture of carbon fibers and the corresponding substrate. Since the carbon fiber composite coating with high strength and superhigh bearing capacity is coated on the active substance surface of the positive plate, the invention greatly enhances the structural strength and the dimensional stability of the positive plate and prolongs the service life of the accumulator.