Spirally wound battery with continuous tabs, asymmetric electrode sheets, same-side electrodes and capsule safety valve

Abstract

The invention provides a spirally wound battery with continuous tabs, asymmetric electrode sheets, same-side electrodes and a capsule safety valve. The spirally wound battery comprises a battery case and a cell, wherein the cell is wound into cylindrical body by winding a positive electrode sheet, a negative electrode sheet, and a capsule between the positive electrode sheet and the negative electrode sheet around a cell reel; a positive collector disc and a negative collector disc are arranged on both ends of the cell separately; a tab, i.e., a positive electrode continuous tab, with the same length as that of the positive electrode sheet is arranged on a top end of the positive electrode sheet at a side closer to the positive current collector disc; a spiral slot, i.e., a positive electrode sheet slot is arranged on the current collector disc; a negative terminal is led to a direction of the positive terminal of the battery through an electrode terminal protective cover arranged on a side of the battery case; and the negative electrode sheet is a composite electrode provided with a strip-shaped metal oxide coating thereon. The battery provided by the invention has strong current conducting ability, super capacitor high rate charging and discharging ability, and the safety of the battery is improved due to the adoption of a double membrane safety valve.

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 pole piece with the same direction electrode capsule membrane safety valve winding battery, which can make the current distribution even during the charging and discharging process. It effectively improves the current conduction capacity, improves the mechanical strength and anti-vibration performance of the electrode, reduces the internal resistance of the electrode, and has 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 improves the battery life. The safety of the battery prolongs the cycle life of the battery and further improves the performance of the wound lead-acid battery

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