Wound battery with continuous lugs, asymmetric composite electrode and bag membrane safety valve

Abstract

A wound battery with continuous lugs, an asymmetric composite electrode and a bag membrane safety valve comprises a battery shell and a cell, and is characterized in that the cell is wound into a columnar body by means of a positive pole piece, a negative pole piece and a membrane between the positive pole piece and the negative pole piece through a cell winding shaft; a positive pole current collection plate and a negative pole current collection plate are arranged at the tops of the two ends of the cell respectively; the lug with the same length as the positive pole piece is arranged at the top of the side, close to the positive pole current flow plate, of the positive pole piece and serves as the positive pole continuous lug; the positive pole current collection plate is provided with a spiral groove which is a positive pole piece clamping groove; the negative pole piece is the composite electrode, a lead plate serves as a bottom plate of the composite electrode, and metal oxide coatings distributed in strip shapes are arranged on the lead plate. The wound battery has the advantages that by means of the special end face current collection structure and the composite electrode, the current conduction capacity is effectively improved, so that the battery has high-rate charge and discharge characteristics of supercapacitors, the dual-membrane safety valve can better protect the battery and improve the use properties of the battery.

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 valve explosion-proof membrane is a single-membrane structure, which is easy to cause safety accidents. The invention provides a continuous tab asymmetric composite electrode capsule membrane safety valve winding battery, which can make the current distribution even during the charging and discharging process, and effectively increase the current. Conductivity, and improve the mechanical strength and anti-vibration performance of the electrode, reduce the internal resistance of the electrode, and at the same time have the characteristics of high-rate charging and discharging of super capacitors; the double-film structure explosion-proof film of the safety valve makes the battery safer and prolongs the cycle of the battery service life, further improving the performance of wound lead-acid batteries

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