Battery grid and casting method thereof

Abstract

The invention discloses a secondary cell bar, comprising bar frame as well as transverse ribs and vertical ribs fixed in the bar frame, where the total sectional area ratio of the transverse ribs to the vertical ones is k, and the value of k is between 1.2 and 1.8. The invention also discloses a method for casting the secondary cell bar, comprising the steps of: in the bar caster, keeping the lead boiler temperature at 480 deg.C - 500 deg.C, the lead scoop temperature at 500 deg.C -530 deg.C, the lower part temperature of the moving die at 190 deg.C-230 deg.C, the upper part temperature of the moving die at 175 deg.C-240 deg.C, and the injection mold temperate at 165 deg.C-175 deg.C, and casting in the direction of the vertical bars in the bar mold. The bar is well-molded and unbroken, thus able to reduce the alloy content and save the production cost and simultaneously add the adhesive weight of the active matters and increase the secondary cell capacity; and the secondary cell made of the bar of the invention has more excellent properties.

Description

technical field [0001] The invention relates to a component part of a storage battery and a preparation method thereof, in particular to a grid of a valve-regulated lead-acid storage battery and a casting method thereof. Background technique [0002] With the wide application of Valve Regulated Lead Acid Battery (VRLA) batteries in various fields in recent years, the market prospect of VRLA batteries presents a promising situation. But at the same time, customers have also put forward higher requirements in the process of using batteries. Especially for the application of valve-regulated batteries in UPS power supplies, users have put forward higher requirements for the battery's high-current discharge performance and specific energy. This also prompts the need to improve the structure of battery products, and the structural design of the grid is particularly important. [0003] The grid is an important part of the battery, and its role in the battery is mainly to support ...

AI Technical Summary

Problems solved by technology

This structure with many horizontal ribs and few vertical ribs is designed based on the suitability of the grid casting process, but the battery performance of the grid manufactured with this structure is not good enough, the voltage drop is large, and the current distribution tends to be uneven

If the k value is used to represent the total cross-sectional area of ​​horizontal ribs / total cross-sectional area of ​​vertical ribs, then the k value of the current grid forming method is greater than 1.8, which will cause an increase in lead consumption (kg / kVAH) at the same time, resulting in a waste of resources

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