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A kind of rapid formation method of lead storage battery

A formation method and technology of lead-acid batteries, which are applied in the field of storage batteries, can solve the problems of high energy consumption and long formation time, and achieve the effects of low energy consumption, short formation time and low acid density

Active Publication Date: 2020-09-01
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a rapid formation method for lead-acid batteries to solve the problems of long formation time and high energy consumption in the existing technology

Method used

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  • A kind of rapid formation method of lead storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 12Ah battery

[0046] 1. The battery to be formed is automatically acid-added by a vacuum acid-adding machine, the density of the added sulfuric acid solution is 1.265 / ml, and the temperature is 12°C. Then stand in cooling water at 20°C for 0.5h to lower the internal temperature of the battery and at the same time allow the sulfuric acid electrolyte to permeate the plates.

[0047] 2. Place the battery in a constant temperature water bath at 33°C and let it stand for 20 minutes. After standing still, the internal temperature of the battery is more uniform, and the consistency of subsequent formation is better.

[0048] 3. Formation

[0049] a. The first charging and discharging: the charging current adopts the method of gradient increase and then gradient decrease. Then discharge with a large current until the voltage of the battery cell is lower than the specified value.

[0050] 0.08C current charging for 1h, 0.15C current charging for 2h, 0.25C current charging f...

Embodiment 2

[0058] 20AH battery

[0059] 1. The battery to be formed is automatically acid-added by a vacuum acid-adding machine, the density of the added sulfuric acid solution is 1.255g / ml, and the temperature is 5°C. Then stand in 10°C cooling water for 1.0h to lower the internal temperature of the battery and at the same time make the sulfuric acid electrolyte soak into the plate.

[0060] 2. Place the battery in a constant temperature water bath at 35°C and let it stand for 30 minutes. After standing still, the internal temperature of the battery is more uniform, and the consistency of subsequent formation is better.

[0061] 3. Formation

[0062] a. The first charging and discharging: the charging current adopts the method of gradient increase and then gradient decrease. Then discharge with a large current until the voltage of the battery cell is lower than the specified value.

[0063] 0.08C current charging for 2 hours, 0.15C current charging for 2.5 hours, 0.25C current charg...

Embodiment 3

[0071] 12Ah battery

[0072] 1. The battery to be formed is automatically acid-added by a vacuum acid-adding machine, the density of the added sulfuric acid solution is 1.240g / ml, and the temperature is 15°C. Then stand in 10°C cooling water for 0.5h to lower the internal temperature of the battery and at the same time make the sulfuric acid electrolyte soak into the plate.

[0073] 2. Place the battery in a constant temperature water bath at 38°C and let it stand for 30 minutes. After standing still, the internal temperature of the battery is more uniform, and the consistency of subsequent formation is better.

[0074] 3. Formation

[0075] a. The first charging and discharging: the charging current adopts the method of gradient increase and then gradient decrease. Then discharge with a large current until the voltage of the battery cell is lower than the specified value.

[0076] 0.08C current charging for 1h, 0.15C current charging for 2h, 0.25C current charging for 5h,...

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Abstract

The invention discloses a rapid formation method of a lead storage battery, which belongs to the technical field of storage batteries. In the rapid formation method of lead-acid storage batteries, firstly, the battery to be formed after adding acid is placed in a constant temperature water bath for formation, and in the early stage of formation, it is charged to the gas evolution potential in a small current gradient increasing manner, and then charged in a decreasing current gradient manner, reducing Polarization; in the middle stage of formation, first use high current to charge to the gas evolution potential, and then charge in a gradient decreasing manner to quickly realize the conversion of active substances and save charging time; when the polarization is large, use high current discharge to depolarize and improve The battery charging acceptance ability reduces the time-consuming at this stage and improves production efficiency. The invention adjusts the process, so that the water loss of the battery electrolyte is reduced, and the change of the acid density is small, so that the pole plate is quickly converted into an active material at a lower acid density, and the lower acid density is more conducive to the formation of α-PbO 2 , which helps extend battery life.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a rapid formation method for lead storage batteries. Background technique [0002] Formation is one of the key processes in the manufacture of lead-acid batteries. Formation is to charge and discharge the battery under certain conditions, and convert the inactive positive electrode active material into active material. Through chemical formation, not only can the polar plate generate a material with higher activity, but also make the obtained active material have an appropriate microstructure, so that there is better contact between the crystals, so as to ensure that the polar plate has high specificity and long life. Charge and discharge life, thereby improving the battery's charge and discharge performance, self-discharge, storage and other comprehensive performance. [0003] At present, lead-acid batteries mainly adopt the internal formation method, and the internal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12
CPCY02E60/10Y02P70/50
Inventor 李进兴张开红姚秋实李鹏苏绍祥代飞汤序锋
Owner TIANNENG BATTERY GROUP
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