Growth plate curing and dying process of lead-acid accumulator

Abstract

The invention provides a lead-acid accumulator raw plate solidification drying process which is used for solving the problems that the raw plate active matter is easy to occur argillization, and be desquamated, etc. The technical proposal of the invention is that the procedure is carried out in a solidification drying chamber, with the process parameters as follows: 60 to 95 percent of solidification relative humidity of positive raw plate, 30 to 45 DEG C of solidification temperature thereof, 56 to 72 hours of solidification time thereof; 60 to 80 percent of solidification relative humidity of negative raw plate, 30 to 45 DEG C of solidification temperature thereof and 36 to 48 hours of solidification time thereof. The process of the invention is beneficial for reducing the free lead content in the raw plate, obviously improves the adhesion of the lead paste and the grid plate, prolongs the service life of the accumulator, and reduces the generation of rust plate and the dosage of water vapor during the solidification. The comparison detection indicates that the service life of the accumulator prepared by the raw plate which is processed by the process of the invention is prolonged by about 20 percent compared with the original process.

Description

Technical field [0001] The invention relates to a green board curing and drying process used in the production process of lead-acid batteries, and belongs to the technical field of batteries. Background technique [0002] In the manufacturing process of lead-acid batteries, curing and drying is an intermediate process that connects the green board paste and the forming process. After coating, the raw plate has too much moisture on the one hand, and on the other hand the lead paste is unstable. It needs curing and drying process to make it harden and dehydrate. During the hardening and dehydration process, a series of physical and chemical reactions occur. If the curing and drying effect of the green plate is not good, it will have a great impact on the quality of the plate, and the phenomenon of plate cracking, powder removal, and crispness will occur, which will directly affect the battery capacity and life. The curing and drying effect can be simply summarized as: continuing to...

AI Technical Summary

Problems solved by technology

During the use of the battery manufactured by the above process, it is found that the capacity of the former is reduced, and the latter is prone to the phenomenon of muddying and falling off of the positive active material, which affects the battery life

In addition, high-humidity curing needs to add a large amount of water vapor during the curing stage to maintain the ambient humidity in the curing room. Due to the high humidity, water vapor is easy to condense and drip on the iron plate frame at the top of the curing room, causing the plate frame to be damaged. Rust, and the rust is very easy to contact with the raw board to form a rusty board

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