CN105261731B - A kind of curing and dying process of anode plate for lead acid accumulator - Google Patents

Abstract

The invention relates to the field of production technology of batteries, in particular to a curing and drying process for positive plates of lead-acid batteries, including three stages of curing, resting and drying. The temperature is 55-60°C, the curing humidity is set to 90-98%, the curing time is set to 12-24 hours; the static stage time is set to 8-12 hours, and the oxygen in the air is sucked into the plate during the slow cooling process. The interior is to achieve the conditions required for free lead conversion; the temperature of the drying stage is set to 60°C, the drying humidity is set to below 30%, and the drying time is set to 20 hours. The invention can realize the effect of high temperature curing under the condition of relatively low curing temperature, and reduce energy consumption and cost.

Description

A curing and drying process for positive plates of lead-acid batteries

technical field

The invention relates to the field of storage battery production technology, in particular to a curing and drying process for the positive plate of a lead-acid storage battery.

Background technique

In the process of making lead-acid batteries, the unconverted free lead and moisture content in the lead paste of the positive plate of the lead-acid battery are too high, and it needs to be cured and dried to reduce it to a lower level, and the free lead drops below 4%. dropped below 1%. The specific process flow is as follows: 1. Mixing the paste; 2. Coating the plate; 3. Wetting the positive plate; 4. Curing and drying; 5. Drying the positive plate. At present, the curing process of the positive plate of the lead-acid battery includes high temperature curing and room temperature curing. In the drying process, the drying temperature is 60-90°C, and the humidity is below 30%. The above-mentioned curing and drying processes are the more commonly used curing and drying processes in current production.

Contents of the invention

In order to solve the above-mentioned existing technical problems, the present invention provides a curing and drying process for the positive plate of a lead-acid battery, which achieves the effect of high-temperature curing under the condition of relatively low curing temperature, and reduces energy consumption and cost.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A curing and drying process for the positive plate of a lead-acid battery, which is characterized in that it includes three stages of curing, resting and drying. In the curing stage, the polar plates are closely approached. 90-98%, the solidification time is set to 12-24 hours; the static stage time is set to 8-12 hours, the plate absorbs the oxygen in the air into the inside of the plate during the slow cooling process to achieve the required conversion of free lead Conditions; the drying stage temperature is set to 60°C, the drying humidity is set to below 30%, and the drying time is set to 20 hours.

The curing and drying process of the positive plate of the lead-acid storage battery described in the present invention is mainly to close the pole plates together in the curing stage, use the heat of the exothermic reaction of the pole plate itself to increase the temperature of the pole plate in the curing stage, and make the pole plate dry in the static stage. In the process of slow cooling, the oxygen in the air is sucked into the inside of the plate to achieve the conditions required for the transformation of free lead, and the temperature in the drying stage only needs to be 60°C, so that the temperature in the solidification stage can be reached at 55-60°C The high-temperature curing and drying effect of curing at 75-90°C and drying at 60-90°C reduces energy consumption in the entire process, reduces production costs, and improves the economic benefits of the enterprise.

Detailed ways

The present invention is described in detail below in conjunction with specific embodiment:

Example 1:

Closely close the positive plates, the curing stage temperature is 55°C, and the curing humidity is 90-98%; the static stage is 8 hours; the drying temperature is 60°C, and the drying humidity is below 30%. The experimental results of curing for 12 to 24 hours and drying for 20 hours are shown in Table 1:

Table 1

Example 2:

Closely close the positive plates, the curing stage temperature is 55°C, and the curing humidity is 90-98%; the static stage is 12 hours; the drying temperature is 60°C, and the drying humidity is below 30%. The experimental results of curing for 12 to 24 hours and drying for 20 hours are shown in Table 2:

Table 2

Embodiment three:

Closely close the positive plates, the curing stage temperature is 60°C, the curing humidity is 90-98%, and the static stage is 8 hours; the drying temperature is 60°C, and the drying humidity is below 30%. The experimental results of curing for 12 to 24 hours and drying for 20 hours are shown in Table 3:

table 3

Embodiment four:

A curing and drying process for the positive plate of a lead-acid battery, the positive plate is brought close together, the temperature in the curing stage is 60°C, the curing humidity is 90-98%, and the static stage is 12 hours; the drying temperature is 60°C, and the drying humidity is below 30% . The experimental results of curing for 12 to 24 hours and drying for 20 hours are shown in Table 4:

Table 4

It can be seen from the above examples that tetrabasic lead sulfate (4BS), a product cured at high temperature, is produced after the plates are cured and dried. In the invention, the polar plates are closely approached in the curing stage, and the heat of the exothermic reaction of the polar plates is used to increase the temperature of the polar plates in the curing stage, so as to achieve the effect of high-temperature curing.

Of course, the above descriptions are not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention shall also belong to the present invention. protection scope of the invention.

Claims (1)

1. A curing and drying process for the positive plate of a lead-acid storage battery is characterized in that it comprises three stages of curing, static and drying, and in the curing stage, the pole plates are brought close together, and the setting temperature of the curing stage is 55-60° C. The humidity is set to 90-98%, the curing time is set to 12-24 hours; the static stage time is set to 8-12 hours, and the plate absorbs the oxygen in the air into the inside of the plate during the slow cooling process to achieve the transformation of free lead. The required conditions; the drying stage temperature is set to 60°C, the drying humidity is set to below 30%, and the drying time is set to 20 hours.