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A curing and drying technology for lead-acid batteries, applied to the electrodes of lead-acid batteries, etc., can solve problems such as temperature inconsistency, low production efficiency, and poor plate consistency, so as to prolong cycle life, improve production efficiency, and improve plate quality. The effect of temperature
Active Publication Date: 2019-11-19
TIANNENG BATTERY GROUP
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Problems solved by technology
During the process, actions such as heating, steaming, atomizing humidification, and air dehumidification are required. The curing room is filled with the plates to be cured, resulting in large differences in temperature, humidity and air flow in different areas of the curing room. Therefore, after curing and drying There are large differences in the moisture content and phase content of the plates, which have a great impact on the quality of the battery
Usually curing and drying takes 2-3 days to complete, the production efficiency is not high, and the production process requires a lot of energy consumption
[0004] In the current conventional curing process, the atomization humidification and circulation fan are always turned on during the curing process. On the one hand, this leads to high energy consumption. On the other hand, the spray humidification will reduce the local temperature in the curing room, causing temperature inconsistency and affecting the curing effect. Turning on the circulation The fan will make the humidity in the local area of the curing room too low, resulting in poor plate consistency
In the stage of high temperature and high humidity, the liquid film in the pores of the plate is thicker, and the solubility of oxygen is also low at high temperature. Oxygen is not easy to react with lead paste. Turning on the circulation fan to supplement oxygen not only has no obvious effect, but causes energy waste
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Embodiment 1
[0043] The curing and drying method of the lead storage battery polar plate of the present embodiment is specifically as follows:
[0044] 1. Plate preloading stage
[0045] The temperature in the curing room is set to 45°C and the relative humidity is set to 99%. Turn on the atomization and humidification, fill the plate curing rack, push it into the curing room, and close the door of the curing room after filling.
[0046] 2. Plate preheating stage
[0047] When the curing chamber is in a sealed state, the temperature of the negative plate curing chamber is raised to 50° C. in 2 hours; the temperature of the positive plate is raised to 60° C. in 3 hours. Relying on steam heating, there is no need to turn on the circulation fan, no need to supplement oxygen, and no need to spray humidification.
[0048] 3. Recrystallization transformation stage
[0049] With the curing chamber in a sealed state, the negative plate curing chamber was kept at 50° C. for 6 hours; the positive...
Embodiment 2
[0058] 1. Plate preloading stage
[0059] The temperature in the curing room is set to 45°C and the relative humidity is set to 99%. Turn on the atomization and humidification, fill the plate curing rack, push it into the curing room, and close the door of the curing room after filling.
[0060] 2. Plate preheating stage
[0061] When the curing chamber is in a sealed state, the temperature of the negative plate curing chamber is raised to 55° C. in 3 hours; the temperature of the positive plate is raised to 75° C. in 4 hours. Relying on steam heating, there is no need to turn on the circulation fan, no need to supplement oxygen, and no need to spray humidification.
[0062] 3. Recrystallization transformation stage
[0063] With the curing chamber in a sealed state, the negative plate curing chamber was kept at 55° C. for 8 hours; the positive plate was kept at 75° C. for 8 hours. Use steam heating, still turn off the circulation fan, spray humidification.
[0064] 4. The...
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Abstract
The invention discloses a curing and drying method for lead battery plates. The method includes the following steps: temperature in a curing chamber being 40-45 DEG C and relative humidity being 95-99%, opening atomization humidification, and placing a pole plate into the curing chamber; the curing chamber being enclosed, closing atomization humidification, heating the negative plate curing chamber to 50-55 DEG C, and heating the positive plate curing chamber to 60-75 DEG C; the curing chamber being enclosed, adopting steam heating, maintaining the negative plate curing chamber at 50-55 DEG Cfor 6-8 h, and maintaining the positive plate at 60-75 DEG C for 6-8 h; closing steam heating, opening the curing chamber to perform heat dissipation, cooling the pole plate to 30-40 DEG C, then closing the curing chamber, setting the temperature in the curing chamber to be 40 DEG C and the relative humidity to be 80-90%, and opening an oxygen supplement air door and a humidity elimination air door to perform oxygen supplement and humidity elimination to maintain for 6-8 h; and adopting electric heating to heat to 75 DEG C, opening the humidity elimination air door to perform humidity elimination, arranging a drying device in an air intake channel so that the relative humidity of entered air is less than 70%, and performing maintaining for 6-8 h.
Description
technical field [0001] The invention relates to the technical field of lead storage battery manufacturing, in particular to a curing and drying method for lead storage battery pole plates. Background technique [0002] Curing is a complex reaction that occurs in an environment of certain temperature, humidity and oxygen partial pressure. The curing and drying process of the lead-acid battery mainly has four functions. One is to complete the recrystallization transformation process of the lead paste during the curing process; the second is to complete the conversion of free lead; the third is to form a corrosion layer between the grid and the lead paste; A lead paste with a certain pore structure and strength is formed. [0003] In production, curing is usually achieved by programmatically controlling the temperature, humidity and air flow in the curing chamber. During the process, actions such as heating, steaming, atomizing humidification, and air dehumidification are req...
Claims
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Application Information
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