A method for internalizing a power battery into a green plate

Abstract

The invention discloses a method for internalizing a power battery into a green electrode plate, which comprises the following steps: a soaking step for soaking the cured green electrode plate, at least including: a first soaking sub-step: soaking the cured green electrode plate The plate is soaked in dilute sulfuric acid electrolyte with colloidal silica added at a density of 1.05-1.20 g / ml; the second soaking sub-step: soaking the green electrode plate soaked in the first soaking sub-step in a density of 1.25-1.40 g / ml dilute sulfuric acid electrolyte with colloidal silica added; the drying step is used to dry the raw plate after soaking in the soaking step. The floating powder of the electrode plate treated by this method is obviously reduced, and the performance of the assembled battery is further improved.

Description

technical field [0001] The present application relates to the field of methods for internalizing a battery raw plate, and in particular to a method for internalizing a power battery to form a raw plate. Background technique [0002] Plate formation refers to the process of using chemical and electrochemical reactions to transform the plate into positive and negative plates with electrochemical properties. A large amount of acid mist and waste water are produced during the formation process of the traditional plate formation process, causing serious pollution to the environment. With the increasing awareness of environmental protection, the internalization process of batteries has become an industry development trend. However, during the production process of internalized batteries, some problems have been discovered one after another. On the one hand, the pollution of the working environment caused by floating powder on the plates is easy to cause short circuit due to the a...

AI Technical Summary

Problems solved by technology

However, during the production process of internalized batteries, some problems have been discovered one after another. On the one hand, the pollution of the working environment caused by floating powder on the plates is easy to cause short circuit due to the accumulation of lead powder at the bottom of the single cell electrode group; on the other hand, it is difficult to control the internal battery due to the formation process. Temperature, high local temperature will bring many adverse hidden dangers, such as: the formation of lead dendrites, the precipitation of lead paste additives on the plate, and the viscosity of the colloidal electrolyte on the surface of the plate due to uneven temperature Inhomogeneity, that is, uneven impedance, is not conducive to the formation effect and the distribution of colloidal electrolyte

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