阅读说明：本技术 一种用于蓄电池生产的负极板固化工艺 (Negative plate curing process for storage battery production ) 是由 张利棒 江小珍 陶云兴 李超雄 于 2019-12-06 设计创作，主要内容包括：本发明公开了一种用于蓄电池生产的负极板固化工艺,属于蓄电池生产技术领域。本发明包括：在不向固化室通入蒸汽的前提下,固化室内的温度维持在33℃-37℃之间,相对湿度不小于98％,时间为15h-16h；每次将固化室内的温度升高6℃-8℃,相对湿度降低5％-8％,升温降湿后保持6h-8h,最终固化室内的温度升至55℃,相对湿度保持在70％-85％之间。本发明通过在负极板放入固化室后的15-16h内不向固化室内通入蒸汽,依靠极板自身发热来进行温度的维持,有效地节约了蒸汽用量,具有较高的市场应用价值。(The invention discloses a negative plate curing process for storage battery production, and belongs to the technical field of storage battery production. The invention comprises the following steps: on the premise of not introducing steam into the curing chamber, the temperature in the curing chamber is maintained between 33 ℃ and 37 ℃, the relative humidity is not less than 98 percent, and the time is 15h to 16 h; the temperature in the curing chamber is increased by 6-8 ℃ each time, the relative humidity is reduced by 5-8%, the temperature and the humidity are maintained for 6-8 h after temperature rise and humidity reduction, and finally the temperature in the curing chamber is increased to 55 ℃ and the relative humidity is maintained between 70-85%. According to the invention, steam is not introduced into the curing chamber within 15-16h after the negative plate is placed into the curing chamber, and the temperature is maintained by means of self heating of the plate, so that the steam consumption is effectively saved, and the method has a high market application value.)

1. A negative plate curing process for battery production, comprising the following stages:

in the first stage, the negative plates coated with the lead plaster are uniformly placed or hung on a curing frame and are placed in a curing chamber;

in the second stage, on the premise of not introducing steam into the curing chamber, the temperature in the curing chamber is maintained between 33 ℃ and 37 ℃, the relative humidity is not less than 98 percent, and the time is 15h to 16 h;

in the third stage, the temperature in the curing chamber is increased by 6-8 ℃ each time, the relative humidity is reduced by 5-8%, the temperature and the humidity are maintained for 6-8 h after temperature rise and humidity reduction, and finally the temperature in the curing chamber is increased to 55 ℃ and the relative humidity is maintained between 70-85%;

uniformly heating, namely increasing the temperature in the curing chamber by 5 ℃ each time, reducing the relative humidity by 5% each time, keeping the temperature and humidity for 3 hours after heating and humidity reduction, increasing the temperature in the curing chamber to 70 ℃, keeping the relative humidity between 55% and 70%, then reducing the temperature in the curing chamber by 2 ℃ to 4 ℃ each time, keeping the temperature for 3 hours to 5 hours after temperature reduction, finally reducing the temperature in the curing chamber to 60 ℃, and keeping the relative humidity between 60% and 65%;

and in the fifth stage, gradually raising the temperature and reducing the humidity to ensure that the relative humidity in the curing chamber is maintained between 5 and 10 percent, then raising the temperature to 80 ℃ and maintaining for 6 to 8 hours, and finally lowering the temperature to 60 ℃ and maintaining for 3 to 5 hours.

2. The curing process for the negative plate for the production of the storage battery as claimed in claim 1, wherein in the first stage, the distance between two adjacent negative plates is 10mm-20 mm.

3. The curing process of the negative plate for storage battery production as claimed in claim 1, wherein in the fourth stage, the temperature in the curing chamber is raised to 70 ℃ for 6 h.

Technical Field

The invention belongs to the technical field of storage battery production, and particularly relates to a negative plate curing process for storage battery production.

Background

The solidification of the polar plate refers to the process of oxidizing free lead and lead on the surface of grid ribs and recrystallizing and hardening basic lead sulfate in the process of lead plaster gelation of the polar plate coated with the paste under the conditions of certain temperature, time and the like. During the curing and drying process of the polar plate, the drying process is carried out along withThe mass transfer process of the evaporated water is carried out, and the reticular structure of the evaporated water is not allowed to be damaged; meanwhile, before the water evaporation is finished, the oxidation of metallic lead and H3 PbO. PbSO must be finished₄·H₂And (4) crystallizing the O. The negative plate curing process for the storage battery production in the prior art has large steam consumption, so that the production cost is high; and the curing effect of the existing negative plate curing process is poor, so that the production quality of the negative plate is influenced. Therefore, a curing process of a negative plate for battery production is urgently needed to solve the above technical problems.

Disclosure of Invention

The present invention provides a curing process for a negative plate used in the production of a storage battery, which aims to solve the technical problems pointed out in the background art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a negative plate curing process for production of a storage battery, which comprises the following stages:

in the first stage, the negative plates coated with the lead plaster are uniformly placed or hung on a curing frame and are placed in a curing chamber;

in the second stage, on the premise of not introducing steam into the curing chamber, the temperature in the curing chamber is maintained between 33 ℃ and 37 ℃, the relative humidity is not less than 98 percent, and the time is 15h to 16 h;

in the third stage, the temperature in the curing chamber is increased by 6-8 ℃ each time, the relative humidity is reduced by 5-8%, the temperature and the humidity are maintained for 6-8 h after temperature rise and humidity reduction, and finally the temperature in the curing chamber is increased to 55 ℃ and the relative humidity is maintained between 70-85%;

uniformly heating, namely increasing the temperature in the curing chamber by 5 ℃ each time, reducing the relative humidity by 5% each time, keeping the temperature and humidity for 3 hours after heating and humidity reduction, increasing the temperature in the curing chamber to 70 ℃, keeping the relative humidity between 55% and 70%, then reducing the temperature in the curing chamber by 2 ℃ to 4 ℃ each time, keeping the temperature for 3 hours to 5 hours after temperature reduction, finally reducing the temperature in the curing chamber to 60 ℃, and keeping the relative humidity between 60% and 65%;

and in the fifth stage, gradually raising the temperature and reducing the humidity to ensure that the relative humidity in the curing chamber is maintained between 5 and 10 percent, then raising the temperature to 80 ℃ and maintaining for 6 to 8 hours, and finally lowering the temperature to 60 ℃ and maintaining for 3 to 5 hours.

Further, in the first stage, the distance between two adjacent negative plates is 10mm-20 mm.

Further, in the fourth stage, the temperature in the curing chamber was increased to 70 ℃ for 6 hours.

The invention has the following beneficial effects:

1. according to the invention, steam is not introduced into the curing chamber within 15-16h after the negative plate is placed into the curing chamber, and the temperature is maintained by means of self heating of the plate, so that the steam consumption is effectively saved, and the method has a high market application value.

2. The invention ensures that the polar plate is oxidized in the shortest time and the polar plate active substance has the best crystallization effect by optimizing the curing process parameters, and the production quality of the polar plate is obviously improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention relates to a negative plate curing process for production of a storage battery, which comprises the following stages:

uniformly placing or hanging the negative plates coated with the lead plaster on a curing frame at a distance of 10-20 mm, and placing the negative plates into a curing chamber;

in the second stage, on the premise of not introducing steam into the curing chamber, the temperature in the curing chamber is maintained between 33 ℃ and 37 ℃, the relative humidity is not less than 98 percent, and the time is 15h to 16 h;

in the third stage, the temperature in the curing chamber is increased by 6-8 ℃ each time, the relative humidity is reduced by 5-8%, the temperature and the humidity are maintained for 6-8 h after temperature rise and humidity reduction, and finally the temperature in the curing chamber is increased to 55 ℃ and the relative humidity is maintained between 70-85%;

uniformly heating, namely increasing the temperature in the curing chamber by 5 ℃ each time, reducing the relative humidity by 5% each time, keeping the temperature for 3 hours after heating and humidity reduction, increasing the temperature in the curing chamber to 70 ℃ and keeping the relative humidity between 55% and 70%, maintaining for 6 hours, then cooling, reducing the temperature in the curing chamber by 2 ℃ to 4 ℃ each time, keeping the temperature for 3 hours to 5 hours after cooling, finally reducing the temperature in the curing chamber to 60 ℃ and keeping the relative humidity between 60% and 65%;

and in the fifth stage, gradually raising the temperature and reducing the humidity to ensure that the relative humidity in the curing chamber is maintained between 5 and 10 percent, then raising the temperature to 80 ℃ and maintaining for 6 to 8 hours, and finally lowering the temperature to 60 ℃ and maintaining for 3 to 5 hours.