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A kind of sealing formation method of wound lead-acid battery

A technology of lead-acid battery and formation method, which is applied in the direction of lead-acid battery, lead-acid battery construction, lead-acid battery electrode, etc., which can solve the problems of increased difficulty in battery formation, prolonging battery production cycle, and small volume of electrolyte, achieving Improve the effect of simultaneous reduction of charging capacity and charging time, improvement of exposure formation, and improvement of production efficiency

Active Publication Date: 2022-02-11
湖北弘本能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For wound lead-acid batteries, if this method is adopted, the volume of the electrolyte after formation is too small to meet the requirements of low-temperature -18°C high-current discharge. At the same time, the acid density is obviously high, and larger particles are easy to form in the initial stage of battery formation. Lead sulfate grains make it more difficult to form the battery, and in the actual use of the battery, it is easy to cause corrosion of the positive grid; and the long-term static depolarization method significantly prolongs the production cycle of the battery

Method used

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  • A kind of sealing formation method of wound lead-acid battery
  • A kind of sealing formation method of wound lead-acid battery

Examples

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Effect test

Embodiment 1

[0046] According to the requirements for the use of winding batteries, a certain type of 12V75Ah battery should be formed according to the following steps:

[0047] (1) if figure 2As shown in the process flow chart, the weight ratio of the amount of paste on the positive plate to the grid is controlled to be 1.25, and the weight ratio of the amount of paste to the positive electrode to the negative electrode is 1.1 when coating and filling. Ensure the consistency of the electrode group inside the semi-finished battery, and then fill the plate: fill to the thickness of the positive plate 1. 1mm, the thickness of the negative plate 1.0 mm; stack the negative plate, AGM separator, positive plate, AGM separator in order Winding and molding after placement; pole group curing: place the coiled pole group in a curing room for curing, and the temperature during the curing process should not exceed 70°C to avoid affecting the inner separator of the pole group; after curing, free lead ...

Embodiment 2

[0052] According to the requirements for the use of winding batteries, a certain type of 12V75Ah battery should be formed according to the following steps:

[0053] (1) if figure 2 As shown in the process flow chart, the ratio of the amount of paste applied to the positive plate to the weight of the grid is controlled to be 1.25, and the ratio of the amount of paste applied to the positive electrode to the negative electrode is 1.2. The consistency of the pole group inside the semi-finished battery. Then carry out electrode plate coating: coating until the thickness of the positive plate is 1.2 mm, and the thickness of the negative plate is 1.0 mm; the negative plate, AGM separator, positive plate, and AGM separator are stacked in order and then wound into shape; the pole group is cured: the The coiled electrode group is placed in a curing room for curing, and the temperature during the curing process does not exceed 70°C to avoid affecting the inner separator of the electro...

Embodiment 3

[0058] According to the requirements for the use of winding batteries, a certain type of 12V75Ah battery should be formed according to the following steps:

[0059] (1) if figure 2 As shown in the process flow chart, the ratio of the amount of paste applied to the positive plate to the weight of the grid is controlled to be 1.25, and the ratio of the amount of paste applied to the positive electrode to the negative electrode is 1.1. The consistency of the pole group inside the semi-finished battery. Then carry out plate coating: coating until the thickness of the positive plate is 1.2 mm, and the thickness of the negative plate is 1.1 mm; the negative plate, AGM separator, positive plate, and AGM separator are stacked in order and then wound into shape; the pole group is cured: the The coiled electrode group is placed in a curing room for curing, and the temperature during the curing process does not exceed 70°C to avoid affecting the inner separator of the electrode group; ...

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Abstract

A method for sealing and forming a wound lead-acid battery. The ratio of the amount of paste applied to the positive plate to the weight of the grid is 1.2 to 1.3, and the ratio of the amount of paste applied to the positive electrode to the negative electrode is 1.05 to 1.2. , positive plate, and AGM separator are stacked in sequence and then wound into shape; add acid to the assembled battery, the acid density is 1.246‑1.268g / ml, and the amount of acid added needs to be controlled so that the battery contains acid when there is no free electrolyte 98‑105% of the volume; also includes multi-stage methods such as plate coating, electrode group curing, battery assembly, battery acid addition, battery sealing, and battery formation. The invention greatly reduces the emission of acid mist during the formation process; eliminates the need to pump acid again after the battery is formed in traditional production, reduces the subsequent production and treatment process of the battery, and improves production efficiency; the charging capacity required for the formation of the battery Synchronous reduction with the charging time effectively reduces the production cost of the battery.

Description

technical field [0001] The invention relates to a method for realizing rapid formation of a valve-controlled winding lead-acid battery under sealed conditions, and belongs to the technical field of AGM valve-regulated lead-acid batteries. Background technique [0002] The winding sealed valve-regulated lead-acid battery adopts a unique winding structure, which has extremely high assembly pressure and higher working pressure, which greatly reduces the water loss of the battery. Compared with ordinary lead-acid batteries, it has better high and low temperature discharge performance, higher safety, higher starting power, better fast charging ability and other advantages; it is used in transportation vehicles, construction machinery, energy storage and backup power And other fields, are high value-added battery products. [0003] The current production process of wound valve-regulated lead-acid batteries refers to flooded batteries. At the same time, in order to effectively sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12H01M10/14H01M4/20
CPCH01M4/20H01M10/121H01M10/125H01M10/14Y02E60/10Y02P70/50
Inventor 鲁义铭余国林李朋胡晓敏高国兴刘长来
Owner 湖北弘本能源有限公司
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