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Lead storage battery container formation process

A lead-acid battery, internalization technology, applied in lead-acid battery, lead-acid battery construction, secondary battery and other directions, can solve problems such as waste of energy

Active Publication Date: 2020-12-18
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very necessary to control the formation charge current density and formation temperature in the first stage of formation, but it is not necessary to control the formation temperature at a low level in the whole cycle of formation, which is a waste of energy

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 6-DZF-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0027] 1) Add acid, add acid with a density of 1.25g / cm2 to the lead acid battery to be added 3 The sulfuric acid solution, the volume of acid addition is 225ml / cell, and the acid addition method is carried out by vacuum, the vacuum degree is -0.08MPa, and the vacuum is 3 times. After adding acid, the battery is immediately placed in a cooling water tank at 5-15°C to cool down for 20-30 minutes.

[0028] 2) Put the acid-added battery in the formation water tank with the water bath temperature controlled at 20-30°C for 0.5-1 hour, then start the first-stage formation process, at 3.6A (the current density is 5mA / cm 2 ) Constant current charging for 20h (charging capacity 72Ah, 3.6C).

[0029] 3) The circulating cooling water can be turned off 2 hours before the end of the first stage of formation, so that the temperat...

Embodiment 2

[0033] Get 6-DZF-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0034] 1) Add acid, add acid with a density of 1.25g / cm2 to the lead acid battery to be added 3 The sulfuric acid solution, the volume of acid addition is 225ml / cell, and the acid addition method is carried out by vacuum, the vacuum degree is -0.08MPa, and the vacuum is 3 times. After adding acid, the battery is immediately placed in a cooling water tank at 5-15°C to cool down for 20-30 minutes.

[0035] 2) Put the acid-added battery in the formation water tank with the water bath temperature controlled at 20-30°C for 0.5-1 hour, then start the first-stage formation process, at 2.16A (the current density is 3mA / cm 2 ) Constant current charging for 35h (charging capacity 75.6Ah, 3.78C).

[0036] 3) The circulating cooling water can be turned off 2 hours before the end of the first stage of formation, so that the temp...

Embodiment 3

[0040] Get 6-DZF-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0041] 1) Add acid, add acid with a density of 1.25g / cm2 to the lead acid battery to be added 3 The sulfuric acid solution, the volume of acid addition is 225ml / cell, and the acid addition method is carried out by vacuum, the vacuum degree is -0.08MPa, and the vacuum is 3 times. After adding acid, the battery is immediately placed in a cooling water tank at 5-15°C to cool down for 20-30 minutes.

[0042] 2) Put the acid-added battery in the formation water tank with the water bath temperature controlled at 20-30°C for 0.5-1 hour, then start the first-stage formation process, with 2.88A (the current density is 4mA / cm 2 ) Constant current charging for 27.8h (charging capacity 80Ah, 4C).

[0043] 3) Turn off the circulating cooling water 2 hours before the end of the first stage of formation, so that the temperature of...

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Abstract

The invention discloses a lead storage battery container formation process, which belongs to the field of lead storage battery production. The process comprises a first-stage formation stage, a second-stage formation stage and a capacity inspection stage, during the first-stage formation stage, the water bath temperature is controlled to be 20 to 30 DEG C, the charging current density is controlled to be 3 to 5mA / cm <2>, and the charging electric quantity is 3.5 to 4.0 C amperes; in the second stage of formation, the water bath temperature is controlled to be 40 to 50 DEG C, discharging is carried out at the current of 0.5 C ampere, and the discharging capacity is controlled to be 0.25 to 0.75 C amperes; charging is carried out at the current density of 5 to 15mA / cm <2>, and the charging capacity is controlled to be 3.5 to 4.5 C amperes; and in the capacity inspection stage, the water bath temperature is controlled to be 20 to 30 DEG C, and the battery is subjected to capacity inspection discharge and supplementary electricity after standing, cooling and temperature reduction. According to the invention, the formation charging current density and the formation temperature are controlled in stages, so that the comprehensive performance of the battery is improved, the energy consumption for controlling the formation temperature is reduced, and the energy waste caused by water bath temperature control is avoided.

Description

technical field [0001] The invention relates to the technical field of lead storage battery production, in particular to an internal formation process for lead storage batteries. Background technique [0002] One of the difficulties in the internalization control of lead-acid batteries is the control of the formation temperature, which has a very important impact on the overall performance of the battery, especially the low-temperature capacity of the battery. The level of formation temperature control directly affects the low-temperature capacity of the battery. During the process of process research , it is not difficult to find that the qualified rate of low-temperature capacity of the battery is significantly different in winter and summer. The qualified rate of low-temperature capacity is high in winter and low in summer. Therefore, manufacturers will invest more in production costs in summer to control lower formation temperatures. In summer, the qualified rate of batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H01M10/12
CPCH01M10/12H01M10/446Y02E60/10Y02P70/50
Inventor 李桂发刘玉王娟邓成智许宝云周贤机郭志刚刘明伟
Owner TIANNENG BATTERY GROUP
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