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Formation process for electrode plate of lead-acid storage battery

A lead-acid battery and process technology, which is applied to lead-acid battery electrodes, secondary battery charging/discharging, and secondary battery repair/maintenance, etc., can solve problems such as increased acid treatment costs, increase hydration steps, and reduce costs. , the effect of extending battery life

Active Publication Date: 2014-04-09
TIANNENG BATTERY WUHU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, due to the increase of the acid concentration, the cost of acid treatment will increase when the next storage battery undergoes the formation process, that is, the excess acid must be removed, and then water should be added to prepare a formation environment with ideal acidity

Method used

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  • Formation process for electrode plate of lead-acid storage battery

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Embodiment Construction

[0010] Such as figure 1 As shown in the flow chart of the present invention, the steps included in the formation process of the present invention include: first hydrating the plate: the thickness of the grid in this embodiment is a medium thickness, and the hydration is 60 minutes. The thickness of the grid should be properly adjusted, the hydration time of the thinner grid is shorter, and the hydration time of the thicker grid is longer. After testing, the best hydration time is 60 minutes, and grids of various specifications can adapt to this Hydration time; high current charging after hydration: This step is carried out after hydration and before the grid loses water, and the current density used is 11.5mA / m 2 , to the end of the tank voltage 2.37V; then charge with a small current, the current density is 7.5 mA / m 2 , to 100% of the theoretical capacity; after the small current charging is completed, the discharge step is carried out to the cell voltage of 1.77V; rechargi...

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Abstract

The invention discloses a formation process for an electrode plate of a lead-acid storage battery. The formation process comprises the following steps of hydrolyzing; carrying out large current charging after hydration and before a grid loses water; carrying out small current charging after the large current charging is finished, until the voltage reaches 100% of a theoretical capacity; discharging until a cell voltage is 1.77 V; and recharging to a state of 65% of a rated capacity, thus finishing the formation. With the formation process provided by a technical solution of the invention, the beneficial effects of increasing strength of the electrode plate, reducing cost and prolonging service life of the battery can be achieved. In a preferable technical solution of the invention, a hydration time is 60 minutes. The hydration time is suitable for electrode plates of grids in various specifications; and a hydration effect is relatively good.

Description

technical field [0001] The invention relates to the field of lead-acid storage batteries, in particular to a new forming process for lead-acid storage battery plates. Background technique [0002] At present, in the formation process of lead-acid batteries, the formation charging mode is constant current charging, and the current is 10mA / m 2 , the charging time is 24 hours, and dehydration will occur when the formation process reaches 7 hours; the disadvantage of constant current charging is that it will cause serious dehydration at the end of the formation process, and dehydration will cause the acid concentration to increase. As the temperature rises, the additives of the battery plate will be precipitated, and the strength of the plate will be reduced, which will lead to shortened battery life, softening of the positive plate, and loss of electricity on the negative plate. Another defect of constant current charging is that, for the internal content of the plate, a decre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/16
CPCY02E60/126H01M4/16H01M10/44Y02E60/10
Inventor 韩峰庞明朵杨书勇
Owner TIANNENG BATTERY WUHU
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