A kind of ultrasonic formation method of internalized lead-acid battery

A technology of lead-acid batteries and formation methods, which is applied in the direction of lead-acid batteries, lead-acid battery construction, secondary batteries, etc., can solve the problems of shortening battery life, difficulty in battery formation, and aggravated grid corrosion, so as to reduce concentration Poor polarization, uniform electrolyte density, and improved formation efficiency

Active Publication Date: 2016-08-31
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of existing lead-acid storage batteries, which are difficult to form, low in efficiency, and long in cycle, and long-term high-voltage charging and formation aggravates the corrosion of the grid and shortens the service life of the battery. And provide a kind of ultrasonic formation method that improves the formation efficiency and shortens the formation period of internalized lead-acid battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method of ultrasonication of internalized lead-acid batteries, the method is to put the acid-added lead-acid batteries into a water bath for standing still, use an ultrasonic generator to ultrasonically vibrate the water bath, and the temperature of the water bath is 15°C , standing time 2h, during the standing stage, the frequency of the ultrasonic waves emitted by the ultrasonic generator is 60KHz; turn off the ultrasonic generator; then charge the lead-acid battery after standing, when the charging voltage reaches 15-16V, use the ultrasonic wave again The generator performs ultrasonic oscillation, and the frequency of the ultrasonic waves emitted by the ultrasonic generator is 40KHz; during the formation process, the temperature is 40°C. The density of electrolyte sulfuric acid is 1.32g / cm 3 Adding anhydrous sodium sulfate mass fraction in sulfuric acid is 0.7% and mass fraction is the stannous sulfate of 0.07%; Also adding mass fraction is 0.1% ethylenediaminetetr...

Embodiment 2

[0022] A method of ultrasonication of internalized lead-acid batteries, the method is to put the acid-added lead-acid batteries into a water bath for standing, and use an ultrasonic generator to ultrasonically vibrate the water bath, and the temperature of the water bath is 25°C , standing time 2.5h, during the standing stage, the frequency of the ultrasonic waves emitted by the ultrasonic generator is 75KHz; turn off the ultrasonic generator; then charge the lead-acid battery after standing, and use it again when the charging voltage reaches 15-16V The sonotrode performs ultrasonic oscillation, and the frequency of the sonotrode emitted by the sonotrode is 50KHz; during the formation process, the temperature is 45°C. The density of sulfuric acid in the electrolyte is 1.35g / cm 3 Adding anhydrous sodium sulfate massfraction in the sulfuric acid is 1% and the massfraction is the stannous sulfate of 0.09%; Also adding the massfraction in the sulfuric acid is 0.3% ethylenediaminet...

Embodiment 3

[0024]A method of ultrasonication of internalized lead-acid batteries, the method is to put the acid-added lead-acid batteries into a water bath for standing, and use an ultrasonic generator to ultrasonically vibrate the water bath, the temperature of which is 35°C , standing time 3h, during the standing stage, the frequency of the ultrasonic wave emitted by the ultrasonic generator is 80KHz; turn off the ultrasonic generator; then charge the lead-acid battery after standing, when the charging voltage reaches 15-16V, use the ultrasonic wave again The generator performs ultrasonic oscillation, and the frequency of the ultrasonic waves emitted by the ultrasonic generator is 80KHz; during the formation process, the temperature is 50°C. The density of sulfuric acid in the electrolyte is 1.37g / cm 3 Adding anhydrous sodium sulfate massfraction in sulfuric acid is 1.05% and massfraction is the stannous sulfate of 0.12%; Also adding massfraction in sulfuric acid is ethylenediaminetetr...

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Abstract

The present invention relates to a method for ultrasonication of internalized lead-acid batteries. The method is to put the acid-added lead-acid batteries into a water bath for standing, and use an ultrasonic generator to ultrasonically vibrate the water bath, and the standing stage is over. Finally, turn off the ultrasonic generator; then charge the lead-acid battery after standing still, and when the charging voltage reaches 15-16V, use the ultrasonic generator to perform ultrasonic oscillation again. Using the cavitation effect of ultrasonic high-frequency conversion, the electrolyte can repeatedly penetrate into the active material, accelerate the flow reaction, and improve the formation efficiency; the straight-forward flow generated in the liquid along the propagation direction of the sound can accelerate the movement of ions, and at the same time It also plays the role of uniform electrolyte density, and then reduces the concentration polarization, so that the formation of the plate is uniform and thorough, and the formation efficiency is improved; the acceleration effect of the liquid particles is promoted, and the active material in the deep layer of the plate is induced to accelerate the reaction and shorten the battery formation cycle.

Description

technical field [0001] The invention relates to the field of accumulators, in particular to an ultrasonic formation method for internally formed lead-acid accumulators which improves the formation efficiency and shortens the formation period. Background technique [0002] Lead-acid battery (Lead-acid battery) electrodes are mainly made of lead and its oxides, and the electrolyte is a battery of sulfuric acid solution. Since the French G.Plante invented the lead-acid battery in 1859, it has experienced nearly 150 years of development. Great progress has been made, whether it is in transportation, communication, electric power, military or in various economic fields of navigation and aviation, lead-acid batteries have played an indispensable and important role. In recent years, with the acceleration of urbanization and the expansion of city limits, the traffic flow has increased dramatically. Although automobiles and other means of transportation are developing rapidly, due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12H01M10/44
CPCH01M10/12H01M10/446Y02E60/10Y02P70/50
Inventor 张森贺鸿喜
Owner CHAOWEI POWER CO LTD
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