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A super battery, carbon material technology
Inactive Publication Date: 2012-10-17
TIANNENG GRP JIANGSU TECH
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[0004] The technical problem to be solved by the present invention is to provide a super battery carbon replenishing method, which can overcome the problem of a large amount of carbon loss in the lead paste (especially on the surface) due to extrusion and electric field force during the paste mixing and forming stages. Make the carbon content of the negative plate not meet the design requirements
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Embodiment 1
[0020] A method for replenishing carbon in a super battery, comprising the following steps:
[0021] Prepare the adhesive first. Take 5 parts by weight of EVA (ethylene-vinyl acetate copolymer), 15 parts of polyvinyl alcohol, and 170 parts of water, put them into the container, and heat up to 60~70°C, then take 10 parts of PTFE (polytetrafluoroethylene) and add In the above-mentioned container, use magnetic stirring or ultrasonic dispersion for about 15 minutes.
[0022] (1) Mixing paste: 100 parts by weight of lead powder, 10 parts of sulfuric acid, 2 parts of binder, 0.8 parts of barium sulfate, 0.8 parts of indium oxide, 0.8 parts of stearic acid, 3 parts of activated carbon, and 1 part of heterogeneous graphite , 0.2 parts of acetylene black, 1 part of humic acid, 15 parts of water, 0.1 part of short fiber; mix the paste according to the conventional method, and complete the smear according to the conventional method;
[0023] (2) Curing the negative plate after smearing...
Embodiment 3
[0035] Take 100 parts of lead powder, 9 parts of sulfuric acid, 2.5 parts of binder, 1.1 parts of barium sulfate, 0.6 part of bismuth oxide, 0.5 part of barium stearate, 1 part of activated carbon, 2 parts of heterogeneous graphite, and 0.5 part of acetylene black in parts by weight , humic acid 1.5 parts, water 14 parts, short fiber 0.2 parts.
[0036] According to the total volume of the acid solution in the boric acid pool, add the original negative electrode paste with step (1) in the boric acid pool
[0037] 3% of the same carbon material, the added carbon material is activated carbon: graphite: acetylene black mixture, the three weight percentages are: 70%: 25%: 5%.
[0038] All the other implementations are as in Example 1.
[0039] In above-mentioned each embodiment, use lead powder quality 10kg, all the other raw materials are by the proportioning and paste in each embodiment, and smear. After the chemical conversion stage, collect the chemical acid solution, filter...
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Abstract
The invention discloses a super battery carbon supplementing method. The method comprises the following steps: 1, preparing a paste from 100 parts by weight of lead powder, 4-10 parts by weight of sulfuric acid, 0.1-8 parts by weight of a binder, 0.1-2 parts by weight of barium sulfate, 0.01-2 parts by weight of a hydrogen evolution inhibitor, 1-4 parts by weight of active carbon, 0.1-2 parts by weight of heterogeneous graphite, 0.05-0.5 parts by weight of acetylene black, 1-4 parts by weight of humic acid, 12-21 parts by weight of water, and 0.1-0.2 parts by weight of short fibers, and smearing; 2, curing smeared negative plates under conditions that the temperature is 80DEG C and the relative humidity is 96% for not less than 60h; 3, forming the cured negative plates for not less than 20h; and 4, adding carbon materials which are same with the carbon materials in step 1 and have a weight being 0.4-20% of the total volume of an acid solution in a boric acid pool, washing the negative plates formed in step 3 with water, immersing the negative plates in the boric acid pool for 10-20min, fishing out, sending to a drying device, and drying.
Description
technical field [0001] The invention relates to the field of storage battery production, in particular to a carbon replenishing method for a super battery. Background technique [0002] In recent years, lead-acid batteries have been widely used in the electric vehicle industry due to their mature production process, low price, and high safety and reliability, which also put forward higher requirements for their energy density and weight. In response to these problems, experts at home and abroad proposed adding activated carbon materials to the negative electrode to improve and enhance the application of lead-acid batteries as power batteries and energy storage batteries, and gradually proposed the concept of super batteries, designing and manufacturing batteries with super capacitors. The applicant's legal person's previous patent application, the patent number is "2010102907180", the patent application title is "super battery mixed negative electrode paste and its preparati...
Claims
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