Lead acid batteries electrode slab gate and manufacturing method thereof

Abstract

The invention provides a lead-acid accumulator electrode plate grid and a method for manufacturing the same, which includes a plate grid for manufacturing the lead-acid accumulator electrode plate, a thick plate grid cast by gravity, a thin plate grid rolled by at least once rolling. The method for manufacturing the lead-acid accumulator electrode plate grid includes steps as follows: collocating lead alloy; gravity casting the thick plate grid, the thick plate grid temperature reduces to less than 80 DEG C cooled by spraying pure water or natural cooled when the thick plate grid mold stripping; the thick plate grid is processed at least once rolling to reach pre-set thin plate grid thickness by the roller after the thick plate grid temperature is reduced less than 80 DEG C; coating plate machine plate on the rolled thin plate grid. The lead-acid accumulator electrode plate grid and method have advantages in that: the plate grid has a whole frame, and can be designed random structure according with design need; the plate grid decay resistance can be enhanced after being rolled many times, and decay resistance can be enhanced more than 50% by comparison with traditional plate grid.

Description

technical field [0001] The invention relates to a lead-acid storage battery electrode grid and a manufacturing process of the electrode grid. Background technique [0002] In recent years, as the price of non-ferrous metals continues to rise and more and more UPS backup power supplies are developing in the direction of miniaturization and high-power discharge, this requires lead-acid batteries to have high performance and low cost. In order to meet this demand, the plates of lead-acid batteries are more thin plate designs. At present, the more advanced methods for producing thin plates at home and abroad include the production method of expanded mesh grids, and the grids of continuous rolling lead plates and then punching holes. production method. The above two grid production methods are not conducive to the production of multi-variety pole plates, and the equipment investment is expensive. [0003] Traditional gravity casting process to produce grids (refer to figure 1 ...

AI Technical Summary

Problems solved by technology

The above two grid production methods are not conducive to the production of multi-variety plates, and the equipment investment is expensive

[0003] Traditional gravity casting process to produce grids (refer to figure 1 ) has the following disadvantages: (1) It cannot produce thin lead or lead-tin alloy grids with low strength; (2) The grids are prone to intergranular corrosion, which shortens the service life of the battery

Although the grid produced by stretching or punching can overcome the shortcomings of the traditional grid, the production efficiency of the grid is high, and the alloy of the grid has been rolled for many times, which improves the compactness of the crystal and thus improves the corrosion resistance of the grid. However, there will be new disadvantages: (1) the grid made by stretching or punching is stretched and die-cut, and the sharp corners of the cut are easy to become a source of corrosion; (2) the grid does not have a complete frame, It is easy to produce sharp corners, and the manufactured plates are easily deformed, which is not conducive to battery assembly

Images