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Lead-acid battery formation method

A technology of lead-acid battery and formation method, which is applied in the field of battery production and lead-acid battery formation, which can solve the problems of increasing capital investment in cooling equipment and cycle treatment equipment, affecting battery life, and unsatisfactory cooling effect, etc., to achieve initial capacity High, fall-off prevention, low-temperature start-up time prolongation effect

Active Publication Date: 2010-03-17
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature in the battery tank is lower than 5°C, the active material on the negative plate is likely to fall off, and the positive plate will peel off; but if the temperature of the electrolyte exceeds 50°C, the gassing will intensify during the reaction, and the grid and active material will The binding force between the space and the active materials will be reduced, which will easily cause the active materials to fall off and affect the service life of the battery.
Usually, the temperature of the electrolyte in the initial stage of battery formation can reach up to 65°C, which is also a problem in battery formation. In order to solve this problem, water bath cooling is generally adopted in the production process to reduce the battery formation current. The above method lowers the electrolyte temperature, requires a large amount of cooling circulating water, and needs to increase the capital investment of cooling equipment and circulating treatment equipment. Due to the loss of water, it is necessary to continuously replenish water, and the cooling effect is not ideal.

Method used

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  • Lead-acid battery formation method

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Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: The raw electrode plates that pass the test are put into the battery tank and sealed according to the process requirements, and are assembled into a semi-finished battery; 3 The dilute sulfuric acid electrolyte was cooled in the cold acid machine for 10 hours, cooled to 20°C, and then the cooled dilute sulfuric acid electrolyte was poured into the 6-QW-54a (E) battery, and the amount of acid poured was 600ml. The deviation is ±10ml. After filling the battery with acid, put the battery into the water bath. After filling the water bath, immediately put it into the cooling circulating water for cooling in the water bath. The battery will be charged and formed within 1.5 hours of acid filling.

Embodiment 2

[0014] Embodiment 2: The qualified green plate is put into the battery tank according to the technical requirements and sealed, and is assembled into a semi-finished battery; the prepared battery has a density of 1.300g / cm2 at 25°C. 3 The dilute sulfuric acid electrolyte was circulated and cooled in the cold acid machine for 24 hours, cooled to 5°C, and then the cooled dilute sulfuric acid electrolyte was poured into the 6-QW-54a (E) battery, and the acid volume was 600ml. The deviation is ±10ml. After filling the battery with acid, put the battery into the water bath. After filling the water bath, immediately put it into the cooling circulating water for cooling in the water bath. The battery will be charged and formed within 1.5 hours of acid filling.

Embodiment 3

[0015] Embodiment 3: The green electrode plates that pass the test are put into the battery tank and sealed according to the process requirements, and are packed into semi-finished batteries; 3 The dilute sulfuric acid electrolyte was circulated and cooled in the cold acid machine for 18 hours, cooled to 15°C, and then the cooled dilute sulfuric acid electrolyte was poured into the 6-QW-54a (E) battery, and the amount of acid poured was 600ml. The deviation is ±10ml. After filling the battery with acid, put the battery into the water bath. After filling the water bath, immediately put it into the cooling circulating water for cooling in the water bath. The battery will be charged and formed within 1.5 hours of acid filling.

[0016] The performance test of the above embodiment is shown in Table 1.

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Abstract

The invention relates to a lead-acid battery formation method which is used for solving the problems that the temperature reduction effect of electrolyte is unsatisfactory and the production efficiency is affected. The technical scheme is characterized in that the lead-acid battery formation method comprises the steps of battery assembly, electrolyte filling and power supply formation, after the improvement, the dilute sulfuric acid electrolyte with the density of 1.200-1.300g / cm<3> prepared at the temperature of 25 DEG C is firstly cooled to the temperature of 5-20 DEG C during the step of electrolyte filling, and then the cooled dilute sulfuric acid is used for quantitative acid filling. The lead-acid battery formation method can ensure that the reaction temperature of a green plate andthe dilute sulfuric acid electrolyte is lower than the temperature of 50 DEG C during the acid filling of a semi-finished battery and effectively prevent active substances from shedding off due to high temperature. Compared with the traditional formation method, the content of the active substances of the plate is higher by above 5%, the initial capacity is higher by above 10%, and the low-temperature starting time is prolonged by 5-30s.

Description

technical field [0001] The invention relates to a storage battery production method, in particular to a lead-acid storage battery formation method capable of reducing a large amount of reaction heat generated by green plates and dilute sulfuric acid, and belongs to the technical field of storage batteries. Background technique [0002] The battery formation process is a very important process in the production process of lead-acid batteries, and it is the process of forming active substances on the plates. In the formation process, the qualified raw plates are put into the battery tank according to the process requirements and sealed to form a semi-finished battery; then a certain concentration of dilute sulfuric acid is poured into the battery according to the specified amount; Chemical reaction to generate chemical substances capable of charge and discharge, and generate PbO on the positive plate 2 , while generating spongy Pb on the negative plate. The raw plate is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12
CPCY02E60/126Y02E60/10Y02P70/50
Inventor 董朝晖
Owner FENGFAN
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