Continuous tab/netlike pole piece/dual-membrane safety valve coiled battery

Abstract

The invention relates to a continuous tab / netlike pole piece / dual-membrane safety valve coiled battery. The battery comprises a battery shell, a battery cell and a safety valve. The battery is characterized in that the battery cell is a columnar body formed by coiling a positive pole piece, a negative pole piece and a diaphragm positioned between the positive pole piece and the negative pole piece through a battery cell roll, and the tops of the two ends of the battery cell are respectively provided with a positive pole collector disk and a negative pole collector disk; and the top end of one side of the positive pole piece close to the positive pole collector disk is provided with a tab (namely positive pole continuous tab) having the same length as the positive pole piece, the collector disk is provided with a helical groove body (namely positive pole piece clamping groove), and the continuous tab of the pole piece is clamped in the pole piece clamping groove and is fixed through a welding method. The battery has the following advantages: through the unique end surface collector structure, the collection area of the battery pole pieces is increased, and the mechanical strength and anti-shake performance of the poles are greatly improved; the dual-membrane safety valve can better protect the battery; and the high-strength fiber netlike pole pieces are high in strength and favorable in electric conductivity, thereby further improving the performance of the storage 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 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 cause...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of low current conduction capacity, high internal resistance and uneven current distribution during charging and discharging of existing wound lead-acid batteries; Due to the disadvantages of low grid material strength and difficult processing of winding structure batteries, the present invention provides a winding battery with continuous lug mesh pole pieces and double-film safety valves, which can make the current distribution even during the charging and discharging process and effectively increase the current Conductivity, improve the mechanical strength and anti-vibration performance of the electrode and reduce the internal resistance of the electrode; the safety valve double-membrane structure explosion-proof membrane makes the battery safer; the plate material is made of a mesh woven from a high-strength fiber material with good conductivity As the base material of the plate, the sheet material has good conductivity, the active material is not easy to detach, the strength of the plate is greatly improved compared with the original lead foil, and the processing is easy. The above characteristics make the battery safer and prolong the cycle use of the battery Long life, reduced manufacturing cost, and further improved the performance of wound lead-acid batteries

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