Asymmetric mixed electrode type porous current collection disc type double-membrane safety valve type winding storage battery

Abstract

The invention relates to an asymmetric mixed electrode type porous current collection disc type double-membrane safety valve type winding type storage battery. The winding type storage battery comprises a battery shell and a battery cell. The winding type storage battery is characterized in that the battery cell is a cylindrical body formed by a positive plate, a negative plate and a diaphragm through the winding of a battery core reel, the diaphragm is located between the positive plate and the negative plate, and a positive current collection disc and a negative current collection disc are respectively arranged on the tops of two ends of the battery core; a lug, namely a positive continuous lug, having the same length with the positive plate is arranged on the top end of one side, close to the positive current collection disc, of the positive plate; and the negative plate is a mixed electrode adopting a lead plate as a base plate, and metal oxide coating layers are distributed on the lead plate in a point manner. The winding type storage battery has the beneficial effects that by utilizing a special end surface current collection structure and the mixed electrode, the current conduction capacity is effectively improved, and meanwhile, the battery has high-rate charging and discharging properties of a super-capacitor; and the battery can be well protected by a double-membrane safety valve, so that the use performance of the storage battery is 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. The invention provides a winding battery with asymmetric mixed electrodes, a double-membrane safety valve, and a collector plate with holes. It can make the current distribution uniform during the charging and discharging process, effectively It 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 double-film explosion-proof film of the safety valve makes the battery safer and prolongs the battery life. cycle life, further improving the performance of wound lead-acid batteries

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