Method for preparing phosphorylation-modified composite high-toughness storage battery case

Abstract

The invention discloses a method for preparing a phosphorylation-modified composite high-toughness storage battery case. The method comprises the following steps: (1) preparing a primary storage battery case; and (2) spraying the surface of the prepared primary storage battery case with a coating; the prepared phosphorylation-modified composite high-toughness storage battery case has heat resistance, toughness, weather resistance, high temperature resistance, acid and alkali resistance, oil resistance, halogenated hydrocarbon corrosion and strong hydrolysis resistance; and the preparation process is environmentally friendly, the equipment is simple, the operation is simple, and the preparation cost is low. The storage battery case is applied to storage battery liquid equipment, has high practical value, can alleviate the failure of the sealing glue joint of storage batteries due to external force impact or temperature shock, and can avoid the liquid leakage problems due to cracks of the storage battery case caused by various reasons in the production process.

Description

Technical field: [0001] The invention relates to the field of battery casings, in particular to a method for preparing a phosphorylated modified composite high-toughness battery casing. Background technique: [0002] The battery is mainly composed of positive plate group, negative plate group, separator, shell and electrolyte. [0003] Among them, the shell is used to hold the electrolyte and support the plate, and there are usually four kinds of glass shells, lead-lined wooden shells, hard rubber shells and plastic shells. The casing is used to contain the electrolyte and the plate group, and should be acid-resistant, heat-resistant, and shock-resistant. The shell is mostly made of hard rubber or polypropylene plastic, which is an integral structure, and there are raised ribs at the bottom to place the plate group. The inside of the shell is divided into 3 or 6 cells that are not connected to each other by the partition wall, and the cells are connected in series with lea...

AI Technical Summary

Problems solved by technology

[0004] There are a large number of batteries in daily life to promote a large demand for battery cases, but sometimes there will be collisions, falls, and drops during the production, handling, and use of the case; this will cause the battery case to rupture to a certain extent , if the battery case cover is in the injection molding process, the temperature of a certain process is not well controlled or the internal stress of the plastic case is not completely eliminated, which will also increase the possibility of weak cracks in the case, often after a period of use Micro-cracks appear, causing micro-leakage of electrolyte

If the glue is used improperly when the glue joint of the battery pole is sealed, or due to external force shock or temperature shock, the seal glue joint of the battery will also fail.