Wound battery with asymmetric composite mesh electrodes, perforated collector plates and double-membrane safety valves

Abstract

The invention provides a wound battery with asymmetric composite mesh electrodes, perforated collector plates and double-membrane safety valves. The wound battery comprises a battery case and a battery core; the storage 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; and a spiral groove body, namely a positive plate clamping groove is arranged in the corresponding collector plate. The wound battery has the beneficial effects that the current conducting capability is effectively improved through unique end-surface collector structures and high-strength fiber mesh composite electrode plates, and meanwhile, the battery has high-rate charging and discharging characteristics of a super-capacitor; and the double-membrane safety valves are safer, so that the performance of the storage battery is further improved.

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] 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 cause serious heating and the battery temperature is too high, which will cause safety hazards; The performance of charging and discharging is not good; the explosion-proof membrane of the general battery safety valve is a single-membrane structure. Once the membrane is corroded by acid, the safety valve will lose its prot...

AI Technical Summary

Problems solved by technology

[0003] 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 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 membrane with asymmetric composite mesh electrode and a porous collector The safety valve winds the 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 of supercapacitors and Discharge characteristics; safety valve double-membrane structure explosion-proof film makes the battery safer; the plate material is made of a mesh material woven from high-strength fiber material with good conductivity as the base material of the plate, which has good conductivity and the active material is not easy to detach , the strength of the plate is greatly improved compared with the original lead foil and it is easy to process

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