Lead-acid accumulator assembled by pole plate with frame-cast, screened and pasted lead-plastic compound grid

Abstract

A lead-acid accumulator assembled by a pole plate with a frame-cast, screened and pasted lead-plastic compound grid is disclosed. Because of the utilization of a plastic grid which has no problem of oxidative deterioration due to no participation in electrochemical reaction in an environment that the accumulator is repeatedly charged and discharged for a long time, the long-time stable existence of the grid is ensured. Lead foils glued and compounded on the two surfaces of a plastic matrix are converted to a lead dioxide conductor after electrochemical oxidization, and the conductor is firmly attached to the plastic matrix to keep stable under the powerful action of an adhesive. The two stabilizations ensure the long-time conductive function of the grid and the long-time stable and invariable grid-shaped structure of the grid, and active substances attached to the grid are impossible to fall off due to the support of the grid and the protection of a mesh; and because of no falling-off of the active substances of positive pole, the scrapping conditions of the lead-acid accumulator are inexistent, and the service life of the accumulator can be greatly prolonged due to the long-time stable existence of a positive plate.

Description

Technical field: [0001] The invention belongs to the technical field of lead-acid batteries. Background technique: [0002] It has been nearly 150 years since Plant invented the lead-acid battery in 1859. With the development of science and technology and the broadening of its application fields, the structure, manufacturing methods and processes of lead-acid batteries have been continuously improved and perfected. Performance has been greatly improved. Lead-acid batteries have always been the largest and most widely used variety of secondary chemical power sources. A single lead-acid battery is composed of a positive plate, a negative plate, sulfuric acid, a separator, a casing, and a sealing cover. The positive and negative electrodes are welded in groups, including busbars and poles. The paste plate is a plate form widely used in lead-acid batteries. It has a large real specific surface area of ​​active materials, can be discharged with a large current, and utilizes act...

AI Technical Summary

Problems solved by technology

Under the condition of external vibration, the active material attached to the ribs will fall off with the ribs festering, and the exfoliated substances will continue to accumulate at the bottom of the case, filling the bottom gap between the positive and negative plates, causing a short circuit between the positive and negative electrodes of the battery , the battery therefore loses its function

It can be seen that the reason for the short life of the lead-acid battery is that the first is the oxidation problem of the positive grid, and the second is the internal connection problem of the active substance material.

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