Closed intermittent ultrasonic container formation process for valve-regulated lead-acid storage battery

Abstract

The invention discloses a closed intermittent ultrasonic container formation process for a valve-regulated lead-acid storage battery, which relates to the technical field of lead-acid storage batterypreparation, and aims to periodically perform ultrasonic treatment on a polar plate by utilizing the cavitation effect of ultrasonic high frequency and remove bubbles generated on the surface of the polar plate, thereby reducing concentration polarization and improving the formation efficiency of the battery. Moreover, sealing and regular vacuumizing are kept, emission of acid mist can be effectively reduced, and more environmental protection and safety are achieved; after negative pressure is formed by combining an ultrasonic process, the diffusion effect of ions in the electrolyte can be further promoted, the concentration polarization is prevented, the container formation process can be optimized, the formation steps are reduced, the formation speed is further increased, the formation period of the battery is shortened, the average energy consumption of a single polar plate is reduced, and the production cost is effectively saved.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery preparation, in particular to a closed intermittent ultrasonic internalization process of a valve-regulated lead-acid battery. Background technique [0002] Formation, that is, conversion, is the process of forming the active material of a lead-acid battery. According to different processes, the formation of batteries can be divided into two methods: external formation and internal formation. External formation is to place the cured green electrode plate in a special formation tank, and multiple positive and negative electrodes are combined together and connected to the DC power supply; internal formation does not require a special formation tank, but the green electrode plate After being assembled and welded into a cluster, and put into the battery case, after assembling into a battery, connect the positive and negative poles of the battery to the DC power supply. Due to the strict en...

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Problems solved by technology

[0004] The present invention aims to overcome that the current internal formation process of the battery is carried out in an open manner. Due to the space limitation of the battery tank, the density of sulfuric acid to be added is high, resulting in long charging time and low conversion efficiency of active substances in the battery re-formation process. Low, the side reaction of electrolyzed water in the later stage of formation is severe, resulting in high energy consumption for the formation of a single plate, and the reaction of electrolyzed water will cause the diffusion of acid mist in the formation workshop, resulting in poor working environment in the workshop and corrosion of equipment and facilities

At the same time, the tiny bubbles formed on the surface of the electrode plate during the formation process prevent the electrolyte from being transported to the inside of the electrode plate, resulting in concentration polarization, which further leads to a decrease in the formation efficiency of the battery, and even impermeable formation of the battery, with white spots on the surface / White spot phenomenon, the battery capacity after formation cannot reach the rated capacity and other problems, a closed intermittent ultrasonic internal formation process for valve-regulated lead-acid batteries is proposed