CN109698324B - Curing and drying process of green plate for lead-acid battery - Google Patents
Curing and drying process of green plate for lead-acid battery Download PDFInfo
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- CN109698324B CN109698324B CN201810554053.6A CN201810554053A CN109698324B CN 109698324 B CN109698324 B CN 109698324B CN 201810554053 A CN201810554053 A CN 201810554053A CN 109698324 B CN109698324 B CN 109698324B
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- 238000001035 drying Methods 0.000 title claims abstract description 77
- 239000002253 acid Substances 0.000 title claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000001301 oxygen Substances 0.000 claims abstract description 81
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 81
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000004343 Calcium peroxide Substances 0.000 claims description 11
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 11
- 235000019402 calcium peroxide Nutrition 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011505 plaster Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 8
- 239000013543 active substance Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 229910000003 Lead carbonate Inorganic materials 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- MFEVGQHCNVXMER-UHFFFAOYSA-L 1,3,2$l^{2}-dioxaplumbetan-4-one Chemical compound [Pb+2].[O-]C([O-])=O MFEVGQHCNVXMER-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
- H01M4/21—Drying of pasted electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A green plate curing and drying process for a lead-acid battery comprises the following steps of curing and drying a positive plate and a negative plate: placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40-50 ℃ and the humidity of 98-100% for curing for 4-6 hours; heating to 80-90 ℃, keeping the humidity at 98-100%, introducing oxygen-enriched air, keeping the pressure of a curing box at 0.4-0.6 MPa, and curing for 4-6 hours; and introducing oxygen-enriched air, and drying for 6-10 hours. Compared with the prior art, the invention completes the curing and drying process of the polar plate through a three-stage process, ensures that the time of each stage is within 10 hours by adjusting the pressure, the oxygen content, the temperature, the humidity and the curing time of each stage, only needs less than 1 day to complete the whole process, and greatly improves the production efficiency. The time is shortened, the process requirements can be met, the consistency of the polar plates is ensured, and the service life of the battery is prolonged.
Description
Technical Field
The invention relates to the field of lead-acid storage battery manufacturing, in particular to a curing and drying process for a green plate of a lead-acid storage battery.
Background
The solidification and drying of lead-acid batteries are important processes for battery production, and mainly involve the processes of oxidation of free lead in lead paste, formation of stable structures of active substances, formation of corrosion layers between grids and the active substances, loss of moisture and the like. There are two general curing processes, namely normal temperature and high humidity and high temperature and high humidity. The drying process generally adopts the temperature of 60-90 ℃, the humidity of less than 30 percent and the time of 12-48 hours. However, in any of the curing and drying processes, the time is more than 48 hours, and some curing and drying processes are as long as 96 hours. So long solidification drying time makes production efficiency reduce, and the energy consumption increases, need purchase a plurality of curing boxes simultaneously and just can satisfy the production demand, has wasted place and fund.
The curing and drying quality of the polar plate is closely related to the performance of the battery, and the conventional curing and drying process has high requirement on the stability of equipment due to long time, so that hidden danger is brought to the consistency of the polar plate. The inconsistency of the cured and dried polar plates can cause great performance difference of batteries in the same batch, and the stability of products is influenced.
The Chinese invention patent CN103943832A discloses a curing and drying process for a lead-acid battery pole plate for energy storage, wherein the curing process respectively uses water vapor containing hydrogen peroxide and ozone in the stages of moisture preservation and heat preservation curing, so that the oxidation rate of free lead in the curing process is improved, and the curing time is shortened. But firstly hydrogen peroxide and ozone are somewhat corrosive and long term use can affect the life of the equipment, secondly the reduced curing time is limited and thirdly the drying process is conventional and further extends the time.
The long curing and drying period of the green polar plate of the lead-acid battery in the prior art causes the reduction of production efficiency, the increase of energy consumption and the prolongation of the delivery period of the product, the quality fluctuation of the cured and dried polar plate is large, the consistency of the battery is influenced, the service life is reduced, and the equipment investment is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing a green plate curing and drying process for a lead-acid battery, which shortens the curing and drying time and ensures the consistency of the plate quality.
The technical scheme of the invention comprises the steps of curing and drying the positive plate and the negative plate, wherein the positive plate curing and drying process comprises the following steps: (A1) placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40-50 ℃ and the humidity of 98-100% for curing for 4-6 hours;
(A2) heating to 80-90 ℃, keeping the humidity at 98-100%, introducing oxygen-enriched air, keeping the pressure of a curing box at 0.4-0.6 MPa and the oxygen content at 35-40%, and curing for 4-6 hours;
(A3) keeping the temperature in a curing chamber at 80-90 ℃, reducing the humidity to be less than or equal to 10%, introducing oxygen-enriched air, keeping the pressure of a curing box at-0.04 to-0.08 MPa, keeping the oxygen content at 35-40%, and drying for 6-10 hours;
the negative plate curing and drying process comprises the following steps:
(B1) placing the negative electrode plate coated with the lead paste in a curing chamber with the temperature of 40-50 ℃ and the humidity of 98-100%, and curing for 4-6 hours;
(B2) heating to 50-60 ℃, keeping the humidity at 98-100%, introducing oxygen-enriched air, keeping the pressure of a curing box at 0.4-0.6 MPa and the oxygen content at 35-40%, and curing for 4-6 hours;
(B3) heating to 80-90 ℃, reducing the humidity to be less than or equal to 10%, introducing oxygen-enriched air, keeping the pressure of a curing box within-0.04 to-0.08 MPa and the oxygen content within 40-45%, and drying for 6-10 hours;
before the coated plate enters a curing chamber, the water content of the positive plate is 10.5-11.5%;
before the coated plate enters a curing chamber, the water content of the negative plate is 9-10%;
after the positive plate is subjected to the curing and drying process, the content of free lead is less than or equal to 2 percent;
after the negative plate is subjected to the curing and drying process, the content of free lead is less than or equal to 3 percent;
after the positive plate and the negative plate are subjected to the drying process, the water content of the plates is less than or equal to 0.3 percent.
The preferred curing and drying process of the positive plate comprises the following steps: (A1) placing the positive plate coated with the lead plaster in a curing chamber with the temperature of 50 ℃ and the humidity of 98 percent, and curing for 4 hours;
(A2) the temperature is 85 ℃, the humidity is 98 percent, oxygen-enriched air is introduced, the pressure of a curing box is maintained at 0.6MPa, the oxygen content is 40 percent, and the curing is carried out for 4 hours;
(A3) the temperature is 85 ℃, the humidity is 0 percent, oxygen-enriched air is introduced, the pressure of the curing box is maintained at-0.08 MPa, the oxygen content is 35 percent, and the drying is carried out for 10 hours.
The preferred curing and drying process of the positive plate comprises the following steps:
(A1) placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40 ℃ and the humidity of 98 percent, and curing for 5 hours;
(A2) the temperature is 80 ℃, the humidity is 98%, oxygen-enriched air is introduced, the pressure of a curing box is maintained at 0.4MPa, the oxygen content is 35%, and the curing is carried out for 6 hours;
(A3) the temperature is 85 ℃, the humidity is 0 percent, oxygen-enriched air is introduced, the pressure of the curing box is maintained at-0.04 MPa, the oxygen content is 40 percent, and the drying is carried out for 8 hours.
In the step (A3), calcium peroxide can be put into the curing chamber after drying, and the addition amount of the calcium peroxide is 0.2-1.0 g/L (the volume of the curing chamber).
The preferable process for curing and drying the negative plate comprises the following steps:
(B1) placing the negative green plate coated with the lead plaster in a curing chamber with the temperature of 45 ℃ and the humidity of 98 percent, and curing for 4 hours;
(B2) oxygen-enriched air is introduced at the temperature of 50 ℃ and the humidity of 98 percent, so that the pressure of a curing box is maintained at 0.6MPa, the oxygen content is 40 percent, and the curing is carried out for 4 hours;
(B3) the temperature is 85 ℃, the humidity is 0%, oxygen-enriched air is introduced to maintain the pressure of the curing box at-0.08 MPa and the oxygen content at 35%, the drying is carried out for 10 hours, and the temperature is reduced to the room temperature.
The preferable process for curing and drying the negative plate comprises the following steps:
(B1) placing the negative green plate coated with the lead plaster in a curing chamber with the temperature of 45 ℃ and the humidity of 98 percent, and curing for 5 hours;
(B2) introducing oxygen-enriched air at 50 ℃ and 98% humidity to maintain the pressure of the curing box at 0.4MPa and the oxygen content at 35%, and curing for 6 hours;
(B3) the temperature is 85 ℃, the humidity is 0%, oxygen-enriched air is introduced to maintain the pressure of the curing box at-0.04 MPa and the oxygen content at 40%, the drying is carried out for 8 hours, and the temperature is reduced to the room temperature.
In the step (B3) of the preferable process for curing and drying the negative plate, calcium peroxide can be put into a curing chamber when the temperature is reduced after the drying is finished, and the addition amount of the calcium peroxide is 0.1-1.0 g/L (the volume of the curing chamber).
After the positive and negative plates are subjected to the curing and drying process, the falling strength of the plates is increased by 30-60%.
After the positive and negative plates are processed by the process, the deep cycle life of the assembled battery is prolonged by more than 25% on the premise of keeping the capacity unchanged or slightly improving the capacity.
The green plate curing and drying process of the invention is divided into three stages: a normal temperature moisturizing stage, a high pressure oxygen-enriched high humidity stage and a low pressure drying stage.
The first stage of the invention, namely the normal temperature moisturizing stage, can ensure that the recrystallization of the active substance can maintain the recrystallization of the active substance crystal by the existing common process, and form a stable structure. The second stage, namely a high-pressure oxygen-enriched high-humidity stage, wherein a high-temperature high-humidity process is adopted, so that the conversion of the 3BS to the 4BS crystal form in the positive plate can be ensured, and the stability of the structure of an active substance and the improvement of the service life are facilitated; the high-pressure process is adopted, so that the solubility of oxygen in water is increased, the active substance is in a high-humidity and oxygen-enriched condition at the same time, the oxidation of free lead and the formation of a corrosion layer are accelerated, and the curing time is shortened; the pressure of the curing chamber is increased, the solubility of oxygen in water vapor is increased by larger pressure, the speed of chemical reaction is accelerated, and meanwhile, oxygen-enriched air is introduced, so that the oxidation of free lead and the formation of a grid interface corrosion layer are further accelerated. And in the third stage, a low-pressure drying process is adopted, so that the volatilization of moisture in the polar plate is accelerated, and simultaneously, oxygen-enriched air is introduced, so that the oxidation of free lead is accelerated in an oxygen-enriched environment, the drying time is shortened, and the drying process of the polar plate is completed as soon as possible.
The invention solves the problems of long curing and drying time and poor consistency of the polar plate of the lead-acid battery in the prior art, improves the production efficiency, saves the energy consumption, has stable polar plate quality and prolongs the service life of the battery. Compared with the prior art, the invention completes the curing and drying process of the polar plate through a three-stage process, ensures that the time of each stage is within 10 hours by adjusting the pressure, the oxygen content, the temperature, the humidity and the curing time of each stage, only needs less than 1 day to complete the whole process, and greatly improves the production efficiency. The time is shortened, the process requirements can be met, the consistency of the polar plates is ensured, and the service life of the battery is prolonged.
The polar plate prepared by the invention has the advantages that the binding force between active substances and between the active substances and the grid is enhanced, the generated basic lead sulfate reaches the optimal proportion, and different requirements on active substance components can be realized by adjusting the pressure, oxygen content, temperature, humidity or curing time of each stage, thereby meeting the application fields of various polar plate models and lead-acid batteries.
Detailed Description
Example 1
Placing the anode green plate in a curing box, and sequentially carrying out the following operations:
(1) placing the positive plate coated with the lead plaster in a curing chamber with the temperature of 50 ℃ and the humidity of 98 percent, and curing for 4 hours;
(2) heating to 85 deg.C, maintaining humidity at 98%, introducing oxygen-enriched air to maintain the pressure of the curing box at 0.6MPa and oxygen content at 40%, and curing for 4 hr;
(3) maintaining the temperature at 85 deg.C, reducing humidity to 0%, introducing oxygen-enriched air to maintain the pressure of the curing box at-0.08 MPa and the oxygen content at 35%, and drying for 10 hr.
The curing and drying process time is 18 hours in total, and the production efficiency is greatly improved compared with 48-96 hours in the prior art. Meanwhile, an oxygen-rich environment is maintained in the last two stages, the formation of a corrosion layer and the oxidation of free lead are accelerated, and the consistency of the quality of the polar plate is improved. After solidification, the content of free lead is 1.8%, the content of 4BS is 20.2%, the drop strength is increased by 40%, the consistency of the assembled battery is better, and the deep cycle life is prolonged by 30%.
Example 2
Placing the anode green plate in a curing box, and sequentially carrying out the following operations:
(A1) placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40 ℃ and the humidity of 98 percent, and curing for 5 hours;
(A2) the temperature is 80 ℃, the humidity is 98%, oxygen-enriched air is introduced, the pressure of a curing box is maintained at 0.4MPa, the oxygen content is 35%, and the curing is carried out for 6 hours;
(A3) the temperature is 85 ℃, the humidity is 0 percent, oxygen-enriched air is introduced, the pressure of the curing box is maintained at-0.04 MPa, the oxygen content is 40 percent, and the drying is carried out for 8 hours.
The curing and drying process time is 19 hours in total, and the production efficiency is greatly improved compared with 48-96 hours in the prior art. Meanwhile, an oxygen-rich environment is maintained in the last two stages, the formation of a corrosion layer and the oxidation of free lead are accelerated, and the consistency of the quality of the polar plate is improved. After solidification, the content of free lead is 1.9 percent, the content of 4BS is 25.0 percent, the drop strength is increased by 30 percent, the consistency of the assembled battery is better, and the deep cycle life is prolonged by 25 percent.
Example 3.
Placing the cathode green sheet in a curing box, and sequentially carrying out the following operations:
(1) placing the negative green plate coated with the lead plaster in a curing chamber with the temperature of 45 ℃ and the humidity of 98 percent, and curing for 4 hours;
(2) heating to 50 deg.C, introducing oxygen-enriched air with humidity of 98%, maintaining the pressure of the curing box at 0.6MPa and oxygen content at 40%, and curing for 4 hr;
(3) heating to 85 deg.C, introducing oxygen-enriched air to maintain the pressure of the curing box at-0.08 MPa and the oxygen content at 35%, drying for 10 hr, and cooling to room temperature.
The curing and drying process time is 18 hours in total, and the production efficiency is greatly improved compared with 48-96 hours in the prior art. Meanwhile, the oxygen-enriched environment is maintained in the last two stages, and the consistency of the quality of the pole plate is improved. After curing, the content of free lead is 2.4%, the drop strength is increased by 50%, the consistency of the battery assembled by the positive plate in the embodiment 1 is better, the low-temperature large-current discharge performance is improved by 16%, and the deep cycle life is prolonged by 35%.
Example 4.
Placing the anode green plate in a curing box, and sequentially carrying out the following operations:
(1) placing the positive plate coated with the lead plaster in a curing chamber with the temperature of 50 ℃ and the humidity of 98 percent, and curing for 4 hours;
(2) heating to 85 deg.C, maintaining humidity at 98%, introducing oxygen-enriched air to maintain the pressure of the curing box at 0.6MPa and oxygen content at 40%, and curing for 4 hr;
(3) maintaining the temperature at 85 deg.C, reducing humidity to 0%, introducing oxygen-enriched air to maintain the pressure of the curing box at-0.08 MPa and oxygen content at 35%, drying for 10 hr, adding 0.2g/L calcium peroxide into the curing box, and cooling to room temperature.
The curing and drying process time is 18 hours in total, and is greatly prolonged compared with 48-96 hours in the prior artThe production efficiency is high. Meanwhile, an oxygen-rich environment is maintained in the last two stages, the formation of a corrosion layer and the oxidation of free lead are accelerated, and the consistency of the quality of the polar plate is improved. After curing, the free lead content was 1.8%, the 4BS content was 20.2%, and the drop strength increased by 40%. In addition, in the drying and cooling stage, calcium peroxide is introduced, and the calcium peroxide can be mixed with water and CO in the air2The drying speed of the polar plate is further accelerated by reaction, and meanwhile, the active substances of the polar plate and CO are avoided when the temperature is higher2Lead carbonate is generated by reaction, the lead carbonate is not beneficial to formation of the polar plate, and the process can save 2-4% of formation electricity quantity. The battery after being assembled has better consistency and the deep cycle life is prolonged by 30 percent.
Claims (7)
1. A curing and drying process for a green plate for a lead-acid battery comprises the steps of curing and drying a positive plate and a negative plate, and is characterized in that the curing and drying process for the positive plate comprises the following steps:
(A1) placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40-50 ℃ and the humidity of 98-100% for curing for 4-6 hours;
(A2) heating to 80-90 ℃, keeping the humidity at 98-100%, introducing oxygen-enriched air, keeping the pressure of a curing box at 0.4-0.6 MPa and the oxygen content at 35-40%, and curing for 4-6 hours;
(A3) keeping the temperature in a curing chamber at 80-90 ℃, reducing the humidity to be less than or equal to 10%, introducing oxygen-enriched air, keeping the pressure of a curing box at-0.04 to-0.08 MPa, keeping the oxygen content at 35-40%, and drying for 6-10 hours;
the negative plate curing and drying process comprises the following steps:
(B1) placing the negative electrode plate coated with the lead paste in a curing chamber with the temperature of 40-50 ℃ and the humidity of 98-100%, and curing for 4-6 hours;
(B2) heating to 50-60 ℃, keeping the humidity at 98-100%, introducing oxygen-enriched air, keeping the pressure of a curing box at 0.4-0.6 MPa and the oxygen content at 35-40%, and curing for 4-6 hours;
(B3) heating to 80-90 ℃, reducing the humidity to be less than or equal to 10%, introducing oxygen-enriched air, keeping the pressure of a curing box within-0.04 to-0.08 MPa and the oxygen content within 40-45%, and drying for 6-10 hours;
before the coated plate enters a curing chamber, the water content of the positive plate is 10.5-11.5%;
before the coated plate enters a curing chamber, the water content of the negative plate is 9-10%;
after the positive plate is subjected to the curing and drying process, the content of free lead is less than or equal to 2 percent;
after the negative plate is subjected to the curing and drying process, the content of free lead is less than or equal to 3 percent;
after the positive plate and the negative plate are subjected to the drying process, the water content of the plates is less than or equal to 0.3 percent.
2. The curing and drying process of the green plate for the lead-acid battery according to claim 1, characterized in that:
(A1) placing the positive plate coated with the lead plaster in a curing chamber with the temperature of 50 ℃ and the humidity of 98 percent, and curing for 4 hours;
(A2) the temperature is 85 ℃, the humidity is 98 percent, oxygen-enriched air is introduced, the pressure of a curing box is maintained at 0.6MPa, the oxygen content is 40 percent, and the curing is carried out for 4 hours;
(A3) the temperature is 85 ℃, the humidity is 0 percent, oxygen-enriched air is introduced, the pressure of the curing box is maintained at-0.08 MPa, the oxygen content is 35 percent, and the drying is carried out for 10 hours.
3. The curing and drying process of the green plate for the lead-acid battery according to claim 1, characterized in that:
(A1) placing the positive electrode plate coated with the lead paste in a curing chamber with the temperature of 40 ℃ and the humidity of 98 percent, and curing for 5 hours;
(A2) the temperature is 80 ℃, the humidity is 98%, oxygen-enriched air is introduced, the pressure of a curing box is maintained at 0.4MPa, the oxygen content is 35%, and the curing is carried out for 6 hours;
(A3) the temperature is 85 ℃, the humidity is 0 percent, oxygen-enriched air is introduced, the pressure of the curing box is maintained at-0.04 MPa, the oxygen content is 40 percent, and the drying is carried out for 8 hours.
4. The curing and drying process of the green plate for the lead-acid battery according to claim 1, 2 or 3, characterized in that: in the step (A3), after drying, calcium peroxide is put into the curing chamber, and the addition amount of the calcium peroxide is 0.2-1.0 g/L.
5. The curing and drying process of the green plate for the lead-acid battery according to claim 1, characterized in that:
(B1) placing the negative green plate coated with the lead plaster in a curing chamber with the temperature of 45 ℃ and the humidity of 98 percent, and curing for 4 hours;
(B2) oxygen-enriched air is introduced at the temperature of 50 ℃ and the humidity of 98 percent, so that the pressure of a curing box is maintained at 0.6MPa, the oxygen content is 40 percent, and the curing is carried out for 4 hours;
(B3) the temperature is 85 ℃, the humidity is 0%, oxygen-enriched air is introduced to maintain the pressure of the curing box at-0.08 MPa and the oxygen content at 35%, the drying is carried out for 10 hours, and the temperature is reduced to the room temperature.
6. The curing and drying process of the green plate for the lead-acid battery according to claim 1, characterized in that: (B1) placing the negative green plate coated with the lead plaster in a curing chamber with the temperature of 45 ℃ and the humidity of 98 percent, and curing for 5 hours;
(B2) introducing oxygen-enriched air at 50 ℃ and 98% humidity to maintain the pressure of the curing box at 0.4MPa and the oxygen content at 35%, and curing for 6 hours;
(B3) the temperature is 85 ℃, the humidity is 0%, oxygen-enriched air is introduced to maintain the pressure of the curing box at-0.04 MPa and the oxygen content at 40%, the drying is carried out for 8 hours, and the temperature is reduced to the room temperature.
7. The curing and drying process of the green plate for the lead-acid battery according to claim 1, characterized in that: in the step (B3), after drying, when the temperature is reduced, calcium peroxide is put into the curing chamber, and the addition amount of the calcium peroxide is 0.1-1.0 g/L.
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| CN111710836B (en) * | 2020-06-24 | 2022-03-25 | 山东康洋电源科技有限公司 | Curing process for positive plate of lead-acid storage battery for electric automobile |
| CN112002876B (en) * | 2020-07-23 | 2022-03-01 | 天能电池集团股份有限公司 | Quick manufacturing process for lead storage battery pole plate |
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| CN112467090B (en) * | 2020-11-06 | 2021-12-14 | 浙江天能汽车电池有限公司 | Curing and drying process for positive plate of start-stop storage battery and storage battery plate group |
| CN112670457B (en) * | 2020-12-25 | 2022-11-11 | 天能电池集团股份有限公司 | Secondary curing method for pole plate with overproof free lead content after curing |
| CN114373896A (en) * | 2021-12-29 | 2022-04-19 | 浙江平湖华龙实业股份有限公司 | Processing technology of lead-acid green plate battery |
| CN114864881B (en) * | 2022-04-22 | 2023-10-31 | 浙江天能电池(江苏)有限公司 | Lead-acid storage battery substrate curing equipment |
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