Symmetric continuous tab, mixed electrode and double-membrane safety valve spiral wound storage battery

Abstract

The invention discloses a symmetric continuous tab, mixed electrode and double-membrane safety valve spiral wound storage battery. The storage battery comprises a battery housing and a cell, and is characterized in that the cell is formed by winding a positive pole piece, a negative pole piece and a separating membrane located between the positive pole piece and the negative pole piece around a cell spool into a cylinder; a positive electrode collector disc and a negative electrode collector disc are disposed at two end tops of the cell separately; a tab, namely a positive electrode continuous tab, of the same length as the positive pole piece is disposed at a top end of one side, proximal to the positive electrode collector disc, of the positive pole piece and a spiral-shaped groove, namely a positive pole piece groove, is disposed in the positive electrode collector disc; and the positive pole piece and the negative pole piece are mixed electrodes, wherein the mixed electrodes have a structure of taking a lead plate as a bottom plate and forming a metal oxide coating on the lead plate in a dotted distribution. The beneficial effects of the storage battery provided by the invention include that the current conductive capability is effectively improved and the storage battery has super-capacitor high rate charge and discharge characteristics, by adopting a unique end face collector structure and the mixed electrodes; and the storage battery is protected better by double-membranes safety valves and the utilization performance of the storage battery is improved.

Description

Technical field [0001] The invention relates to a lead-acid battery, in particular to a high-power, high-rate discharge winding type lead-acid super battery, and belongs to the technical field of battery processing and manufacturing. Background technique [0002] The traditional lead-acid battery manufacturing process and technology have gone through more than a century. In the development process of more than a century, traditional production and processing technologies have been continuously innovated, and new technologies and equipment have been continuously adopted. [0003] At present, most traditional wound lead-acid batteries use single or multiple tabs as the current collection method, and the current extraction and introduction are limited to a limited number of welding points, with low conduction capability, high internal resistance, and charging. During the discharge process, the current distribution is uneven, and it is difficult to realize high-current charging and di...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of low current conduction capacity, high internal resistance, uneven current distribution during charging and discharging of the existing wound lead-acid batteries, and poor performance in applications requiring high-rate charging and discharging; safety The valve explosion-proof membrane is a single-membrane structure, which is easy to cause safety accidents. The invention provides a double-membrane safety valve winding battery with continuous tab symmetrical mixed electrodes, which can make the current distribution even during the charging and discharging process, and effectively improve the current flow. Conductivity, improve the mechanical strength and anti-vibration performance of the electrode, reduce the internal resistance of the electrode, and have the characteristics of high-rate charging and discharging of supercapacitors; the explosion-proof film with double-film structure of the safety valve makes the battery safer and prolongs the cycle use of the battery Life, so that the performance of wound lead-acid batteries to further improve

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