Wound battery with continuous tabs, asymmetric composite mesh electrodes and double-membrane safety valves

Abstract

The invention provides a wound battery with continuous tabs, asymmetric composite mesh electrodes and double-membrane safety valves. The wound battery comprises a battery case and a battery core; the wound battery is characterized in that the battery core is a cylindrical body formed by winding a positive plate, a negative plate and a membrane located between the positive plate and the negative plate through a battery core reel; a positive collector plate and a negative collector plate are arranged at the tops of two ends of the battery core separately; a tab, namely a positive continuous tab, which is equal to the positive plate in length is arranged at the top end of one side, close to the positive collector plate, of the positive plate; a spiral groove body, namely a positive plate clamping groove is arranged in the corresponding collector plate; the negative plate is a composite mesh electrode; and a high-strength conductive fiber mesh is taken as a bottom plate and the bottom plate is provided with a metal oxide coating of ruthenium oxide and the like and a negative active material distributed in a strip. The wound battery has the beneficial effects that the current conducting capability is effectively improved through unique end-surface collector structures and composite mesh electrodes, meanwhile, the battery has high-rate charging and discharging characteristics of a super-capacitor, the double-membrane safety valves are safer and the performance of the battery is better.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a high-power, high-rate discharge wound lead-acid super storage battery, which belongs to the technical field of storage battery processing and manufacturing. Background technique [0002] Traditional lead-acid battery manufacturing processes and technologies have gone through more than a century. In the course of more than a century of development, traditional production and processing technologies have been continuously innovated, and new technologies and equipment have been continuously adopted. [0003] At present, most of the traditional winding lead-acid batteries use single or multiple tabs as the current collection method. During the discharge process, the current distribution is uneven, and it is difficult to realize high-current charge and discharge. In addition, when charging and discharging with high current, due to the large internal resistance of the battery, it will...

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 explosion-proof film of the valve is a single-film structure, which is easy to cause safety accidents and has disadvantages such as low strength and difficult processing of lead foil as a grid material of a wound structure battery. The invention provides a double-film safety valve with asymmetrical composite mesh electrodes with continuous tabs Winding battery, which can make the current distribution even during the charging and discharging process, effectively improve the current conduction capacity, improve the mechanical strength and anti-vibration performance of the electrode, reduce the internal resistance of the electrode, and have high-rate charging and discharging characteristics of super capacitors The explosion-proof film with double-membrane structure of the safety valve makes the battery safer; the plate material is made of a mesh-like material woven from a high-strength fiber material with good conductivity as the base material of the plate. The strength of the board is greatly improved compared with the original lead foil and it is easy to process

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