CN117855399A - Rapid curing method for positive plate of storage battery - Google Patents
Rapid curing method for positive plate of storage battery Download PDFInfo
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- CN117855399A CN117855399A CN202311722609.5A CN202311722609A CN117855399A CN 117855399 A CN117855399 A CN 117855399A CN 202311722609 A CN202311722609 A CN 202311722609A CN 117855399 A CN117855399 A CN 117855399A
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- curing
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- positive plate
- storage battery
- lead
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- 238000001723 curing Methods 0.000 title claims abstract description 63
- 238000003860 storage Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 50
- 239000011505 plaster Substances 0.000 claims abstract description 39
- 238000002156 mixing Methods 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 229960001922 sodium perborate Drugs 0.000 claims abstract description 15
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims abstract description 15
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 claims description 7
- 229910000375 tin(II) sulfate Inorganic materials 0.000 claims description 7
- 238000010025 steaming Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000007712 rapid solidification Methods 0.000 claims 3
- 239000002253 acid Substances 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000002674 ointment Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a rapid curing method for a positive plate of a storage battery, and relates to the technical field of storage battery production. According to the invention, the porosity of the polar plate is improved by dissolving 0.3-0.4% sodium perborate in the oxygen released after the acid in the lead plaster is dissolved after the plaster mixing process is finished. The oxygen can quickly reach the surface of the grid in the stewing cover, the corrosion rate of the grid is quickly improved, the reaction is sufficient, and the problem that the oxygen is difficult to reach the surface of the grid in the depth of the lead plaster due to the fact that the grid is surrounded by the lead plaster is solved. And the stewing process is combined, so that the curing time is shortened.
Description
Technical Field
The invention relates to the technical field of storage battery production, in particular to a rapid curing method for a positive plate of a storage battery.
Background
The curing and drying of green plates is a critical process in the manufacture of plates that directly affects the mechanical strength and electrical properties after charge formation. The purpose of the plate solidification is mainly 3, and the recrystallization of the first basic lead sulfate and the formation of the intrinsic structural strength. And secondly, forming a corrosion layer which is tightly connected with the active substances on the surface of the grid. Thirdly, controlling the content of the metallic lead.
In the water diffusion and permeation period during the curing period after the current power lead-acid battery polar plate is filled, firstly, the basic lead sulfate which is formed by the paste and is not stabilized is recrystallized, and the cohesion among active particles is improved. The optimal condition of recrystallization is to keep the temperature of 50-55 ℃ and humidity RH close to 100% for a long time, and lead plaster water content is about 11%. This stage is approximately 20 hours to complete the recrystallization of basic lead sulfate. Second, when the moisture in the ordinary pressureless curing chamber maintains dynamic balance, the external dissolved oxygen hot water is difficult to permeate to the surface of the grid. In the actual technological operation process, the water content of the polar plate lead plaster is easy to be low due to the influence of weather conditions and the plate feeding speed of staff. The lead plaster can not be timely supplied with water in the later stage of the polar plate in the curing process, so that the quality of a grid corrosion layer is poor, and the curing effect is not ideal. It is difficult to form a firm colloidal network structure of the active material of the lead plaster to achieve the desired internal structural strength.
The actual surface area of the grid is very small, and because the external dissolved oxygen hot water is difficult to permeate to the surface of the grid, the acid-containing water of the lead plaster itself can only react with the surface of the grid to generate PbO to form covalent bonds with PbO in the lead plaster and PbO in basic lead sulfate, and the corrosion layer tightly connected with active substances on the surface of the grid can not be ensured. The optimal condition for oxidizing the metallic lead is to keep the metallic lead in an environment with the temperature of 50-55 ℃ and the water content of lead plaster of about 6.5-8% for a certain time. The current state is that the moisture content of the lead plaster is about 6.5-8%, the lead plaster is difficult to maintain for a long time, and the water loss is too fast in the solidification and oxidation stage. Resulting in the inability of metallic lead to convert. The total curing and drying time of the positive plate in the current industry is about 64 hours.
For example, patent application publication number CN105322141a discloses a process for curing a positive plate of a battery, comprising the steps of: the first stage of curing: in a sealed environment, maintaining the temperature at 70-78 ℃, the humidity at 90-99%, and the time at 5-7h, wherein the circulating wind speed is 0.3-1m/s; and (3) a second curing stage: also in a sealed environment, the temperature is 30-60 ℃, the humidity is 80-90%, and the temperature is kept for 10-40 hours, and the circulating wind speed is 0.3-1m/s; and a third curing stage: the temperature is 70-90 ℃, the humidity is 5-10%, and the temperature is kept for 5-10h, and the circulating wind speed is 4-8m/s; wherein the second stage is controlled to 180-360 minutes when switching the third stage, and the rest switching time is controlled to 60-240 minutes.
The Chinese patent application with publication number of CN101908622A discloses a curing process of a power lead-acid storage battery plate, which sequentially comprises the following steps: (1) Placing the polar plate in a state that the humidity is more than or equal to 98 percent, O 2 The content is more than or equal to 19 percent, and the curing is carried out for 3 to 10 hours under the condition of 70 to 80 ℃; (2) Placing the polar plate in a state that the humidity is more than or equal to 98 percent, O 2 The content is more than or equal to 17 percent, the curing is carried out for 20 to 35 hours under the condition of 35 to 40 ℃, and then the curing is carried out for 1 to 8 hours after the temperature is raised to 50 to 55 ℃; (3) The polar plate is placed under the conditions that the humidity is less than or equal to 10 percent and the temperature is 80-90 ℃ for curing for 20-30 hours.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a rapid curing method of a positive plate of a storage battery, which is characterized in that a proper amount of sodium perborate is added at the end stage of paste mixing to generate oxygen, so that the internal porosity of the positive plate is improved. Introducing compressed air with pressure of 0.3-0.4 MPa in the stewing process, and keeping the oxygen content in the stewing cover to be more than or equal to 210L/m 3 The problem that the formation of a grid corrosion layer is slowed down due to the rapid reduction of oxygen content caused by internal severe reaction is solved. The channel for generating oxygen through sodium perborate smoothly reaches the surface of the grid deep in the lead plaster. And then taking out of the stewing cover and quickly drying, thereby completing 3 purposes of curing the positive plate.
The invention is realized by the following technical scheme:
the rapid curing method of the positive plate of the storage battery comprises a grid and lead plaster coated on the grid, and is characterized by comprising the following steps of:
(1) Mixing the lead paste, scattering sodium perborate accounting for 0.3% -0.4% of the mass of the lead paste on the surface of the lead paste after mixing, uniformly stirring, and coating a plate to obtain a coated positive plate;
(2) Stewing the positive plate obtained in the step (1);
(3) And (3) curing the braised positive plate in the step (2) to obtain a cured positive plate.
Preferably, in the step (2), the stewing and steaming condition is that the stewing and steaming temperature is 100-105 ℃, the humidity is 98-100%, and the time is 2-3 h.
Preferably, the steps of(2) In the process of stewing, compressed air with the pressure of 0.3-0.4 MPa is introduced, and the oxygen content in a stewing cover is kept to be more than or equal to 210L/m 3 . The problem that the oxygen content is drastically reduced due to internal severe reaction, so that the formation of a grid corrosion layer is slowed down is solved.
Preferably, in the step (2), steam humidification and atomized water humidification are started in the stewing process, and the moisture removal air quantity and the circulating air quantity are both 0.
Preferably, the positive plate is transferred to the curing chamber for curing within 15 minutes after the end of the braising. Because of low external temperature and slow drying speed, if the stewed and steamed polar plate cannot be dried rapidly, the internal binding force and drop strength of the polar plate are poor, and lead plaster can be early-stage mud after the polar plate is assembled with a battery.
Specifically, in the step (3), the curing process is as follows:
(3-1) the temperature is 80 ℃, the humidity is 30%, and the curing time is 5.5 hours;
(3-2) the temperature is 80 ℃, the humidity is 0, and the curing time is 7.5 hours;
(3-3) temperature 55 ℃, humidity 0, curing time 1 hour.
Specifically, in the step (3), the steam humidification and the atomized water humidification are turned off,
in the step (3-1), the moisture removal air quantity is opened by 70 percent, the circulating air quantity is opened by 95 percent,
in the step (3-2), the moisture removal air quantity is opened by 95 percent, the circulating air quantity is opened by 95 percent,
in the step (3-3), the moisture removal air quantity is opened by 95%, and the circulating air quantity is opened by 95%.
Specifically, the lead plaster comprises the following components in percentage by mass: 0.05 to 0.10 percent of stannous sulfate, 0.20 to 0.30 percent of antimonous oxide, 0.20 to 0.40 percent of colloidal graphite, 3.0 to 5.0 percent of red lead powder, 0.08 to 0.12 percent of polyester staple fiber and the balance of lead powder with the oxidation degree of 72 to 78 percent.
Specifically, the apparent density of the lead plaster is 4.45-4.55 g/cm 3 The highest temperature of the mixed paste is 68-70 ℃ and the temperature of the discharged paste is 42-46 ℃.
The invention has the beneficial effects that:
according to the invention, the porosity of the polar plate is improved by dissolving 0.3-0.4% sodium perborate in the oxygen released after the acid in the lead plaster is dissolved after the plaster mixing process is finished. The oxygen can quickly reach the surface of the grid in the stewing cover, the corrosion rate of the grid is quickly improved, the reaction is sufficient, and the problem that the oxygen is difficult to reach the surface of the grid in the depth of the lead plaster due to the fact that the grid is surrounded by the lead plaster is solved. And the stewing process is combined, so that the curing time is shortened.
Detailed Description
Example 1
(1) The formula of the ointment comprises the following steps: 1200g of stannous sulfate, 3600g of antimonous oxide, 4800g of colloidal graphite, 60kg of red lead powder (lead tetraoxide) and 1.44kg of polyester staple fiber. The other is 1200kg of lead powder with the oxidation degree of 72-78%.
(2) The moisture content of the lead plaster is 12.0 percent, and the acid content is 4.65 percent.
(3) Mixing with sulfuric acid for 15min, mixing with sulfuric acid for 5min, and apparent density of lead plaster 4.45g/cm 3 The total paste mixing time was 32min.
(4) The highest temperature of the mixed paste is 70 ℃ and the temperature of the discharged paste is 46 ℃.
(5) After the paste mixing is finished, 4800g of sodium perborate is scattered on the surface of the lead paste, a paste mixing machine is started to stir for 2min, so that oxygen released after the sodium perborate is dissolved in acid in the lead paste is improved, and the porosity of the polar plate is improved. The lead plaster was smeared within 2 hours.
(6) Example 1 the braising process is as follows:
0.5MPa compressed air (about 2-3 m) is introduced in the stewing process 3 And/h), keeping the oxygen content in the stewing cover to be more than or equal to 210L/m 3 。
The plate was transferred into the curing chamber 15min after braising to perform the curing process of example 1.
(7) Example 1 the curing process is as follows:
note that: atomized humidification and atomized water humidification (1 on, 0 off).
And obtaining the cured positive plate through the stewing process and the curing process.
Example 2
(1) The formula of the ointment comprises the following steps: 600g of stannous sulfate, 2400g of antimonous oxide, 2400g of colloidal graphite, 36kg of red lead powder (lead tetraoxide) and 960g of polyester staple fiber. The other is 1200kg of lead powder with the oxidation degree of 72-78%.
(2) The moisture content of the lead plaster is 10.5 percent, and the acid content is 4.50 percent.
(3) Mixing with sulfuric acid for 10min, mixing with sulfuric acid for 3min, and apparent density of lead plaster 4.55g/cm 3 The total paste mixing time was 28min.
(4) The highest temperature of the mixed paste is 68 ℃ and the temperature of the discharged paste is 42 ℃.
(5) After the paste mixing is finished, 3600g of sodium perborate is scattered on the surface of the lead paste, a paste mixing machine is started to stir for 1min, so that oxygen released after the sodium perborate is dissolved in acid in the lead paste is improved, and the porosity of the polar plate is improved. The lead plaster was smeared within 2 hours.
(6) Example 2 the braising process is as follows:
0.3MPa compressed air (about 2-3 m) is introduced in the stewing process 3 And/h), keeping the oxygen content in the stewing cover to be more than or equal to 210L/m 3 。
The plate was transferred into the curing chamber 15min after braising and steaming to perform the curing process of example 2.
(7) Example 2 the curing process was the same as example 1 as follows:
note that: atomized humidification and atomized water humidification (1 on, 0 off).
And obtaining the cured positive plate through the stewing process and the curing process.
Example 3
(1) The formula of the ointment comprises the following steps: 1200g of stannous sulfate, 3600g of antimonous oxide, 4800g of colloidal graphite, 60kg of red lead powder (lead tetraoxide) and 1.44kg of polyester staple fiber. The other is 1200kg of lead powder with the oxidation degree of 72-78%.
(2) The moisture content of the lead plaster is 12.0 percent, and the acid content is 4.65 percent.
(3) Mixing with sulfuric acid for 15min, mixing with sulfuric acid for 5min, and apparent density of lead plaster 4.55g/cm 3 The total paste mixing time was 32min.
(4) The highest temperature of the mixed paste is 70 ℃ and the temperature of the discharged paste is 46 ℃.
(5) After the paste mixing is finished, 8400g of sodium perborate is scattered on the surface of the lead paste, a paste mixing machine is started to stir for 2min, so that oxygen released after the sodium perborate is dissolved in acid in the lead paste is improved, and the porosity of the polar plate is improved. The lead plaster was smeared within 2 hours.
(6) Example 3 the braising process was the same as example 1 as follows:
0.5MPa compressed air (about 2-3 m) is introduced in the stewing process 3 And/h), keeping the oxygen content in the stewing cover to be more than or equal to 210L/m 3 。
(7) Example 3 the curing process was the same as example 1 as follows:
note that: atomized humidification and atomized water humidification (1 on, 0 off).
And obtaining the cured positive plate through the stewing process and the curing process.
Comparative example 1
(1) The formula of the ointment comprises the following steps: 1200g of stannous sulfate, 3600g of antimonous oxide, 4800g of colloidal graphite, 60kg of red lead powder (lead tetraoxide) and 1.44kg of polyester staple fiber. The other is 1200kg of lead powder with the oxidation degree of 72-78%.
(2) The moisture content of the lead plaster is 12.0 percent, and the acid content is 4.65 percent.
(3) Mixing with sulfuric acid for 15min, mixing with sulfuric acid for 5min, and apparent density of lead plaster 4.45g/cm 3 The total paste mixing time was 32min.
(4) The highest temperature of the mixed paste is 70 ℃ and the temperature of the discharged paste is 46 ℃.
(5) After the paste mixing is finished, 4800g of sodium perborate is scattered on the surface of the lead paste, a paste mixing machine is started to stir for 2min, so that oxygen released after the sodium perborate is dissolved in acid in the lead paste is improved, and the porosity of the polar plate is improved. The lead plaster was smeared within 2 hours.
(6) Comparative example 1 and paste curing process were as follows:
note that: atomized humidification and atomized water humidification (1 is on, 0 is off)
And obtaining the positive plate after curing by the curing process.
Comparative example 2
(1) The formula of the ointment comprises the following steps: 1200g of stannous sulfate, 3600g of antimonous oxide, 4800g of colloidal graphite, 60kg of red lead powder (lead tetraoxide) and 1.44kg of polyester staple fiber. The other is 1200kg of lead powder with the oxidation degree of 72-78%.
(2) The moisture content of the lead plaster is 12.0 percent, and the acid content is 4.65 percent.
(3) Mixing with sulfuric acid for 15min, mixing with sulfuric acid for 5min, and apparent density of lead plaster 4.45g/cm 3 The total paste mixing time was 32min.
(4) The highest temperature of the mixed paste is 70 ℃ and the temperature of the discharged paste is 46 ℃. The lead plaster was smeared within 2 hours.
(5) Comparative example 2 the braising process was the same as example 1 as follows:
0.4MPa compressed air (about 2-3 m) is introduced in the stewing process 3 And/h), keeping the oxygen content in the stewing cover to be more than or equal to 210L/m 3 。
And (5) transferring the pole plate to a curing chamber for curing after stewing and steaming for 15 min.
(7) Comparative example 2 the curing process was the same as in example 1 as follows:
note that: atomized humidification and atomized water humidification (1 is on, 0 is off)
And obtaining the cured positive plate through the stewing process and the curing process.
Detection example 1
Taking the manufacturing of the internal formation 6-DZF-20 positive plate as an example, the 5 cured and dried positive plates in the above examples 1-3 and comparative examples 1-2 are all assembled with the common 6-DZF-20 negative plate according to a 4 positive and 5 negative plate package. 1700+ -10 g (acid density 1.255 g/cm) of acid was added to each cell 3 ) The charging was continued for 20 hours at a terminal voltage of 15.00 V.+ -. 0.10V (current limit 6A) in an environment at room temperature (25 ℃ C.).
The 6-DZF-20 cell was compared in three ways according to GB/T22199.1-2017 standard, from 5.12 (cycle life test), 5.6 (high current discharge test), 5.9 (-10 ℃ C. Low temperature capacity test).
Table 1 cycle life test
TABLE 2 high current (36A) discharge test
| Project | Discharge time |
| Comparative example 1 | 36min |
| Comparative example 2 | 18min |
| Example 1 | 35min |
| Example 2 | 32min |
| Example 3 | 38min |
| Standard of | ≥25min |
TABLE 3 Low temperature Capacity test at 10 ℃ C
| Project | Capacity of |
| Comparative example 1 | 102min |
| Comparative example 2 | 92min |
| Example 1 | 102min |
| Example 2 | 100min |
| Example 3 | 103min |
| Standard of | ≥96min |
The comparison of tables 1-3 shows that the comparative example 2 cannot meet the standard requirement, the main difference between the example 1 and the examples 2 and 3 is that the addition amount of sodium perborate after paste is different, the example 3 has larger porosity (52%) of the polar plate due to excessive addition amount, and the cycle life test is obviously lower than that of other examples although the high-current discharge and-10 ℃ low-temperature capacity test performances are better than those of other examples. Comparative example 1 is the currently employed positive plate curing process. The positive plate prepared by the method of example 1 is basically different from that of comparative example 1 in three detection results, but the curing running time is reduced by 47 hours, and the actual reduction is more than 8%.
Claims (9)
1. The rapid curing method of the positive plate of the storage battery comprises a grid and lead plaster coated on the grid, and is characterized by comprising the following steps of:
(1) Mixing the lead paste, scattering sodium perborate accounting for 0.3% -0.4% of the mass of the lead paste on the surface of the lead paste after mixing, uniformly stirring, and coating a plate to obtain a coated positive plate;
(2) Stewing the positive plate obtained in the step (1);
(3) And (3) curing the braised positive plate in the step (2) to obtain a cured positive plate.
2. The method for rapidly curing the positive plate of the storage battery according to claim 1, wherein in the step (2), the stewing and steaming condition is that the stewing and steaming temperature is 100-105 ℃, the humidity is 98-100%, and the time is 2-3 h.
3. The rapid solidification method of the positive plate of the storage battery according to claim 1, wherein in the step (2), compressed air with the pressure of 0.3-0.4 MPa is introduced in the stewing process, and the oxygen content in a stewing cover is kept to be more than or equal to 210L/m 3 。
4. The method for rapidly curing the positive plate of the storage battery according to claim 1, wherein in the step (2), steam humidification and atomized water humidification are started in the stewing process, and the moisture removal air quantity and the circulating air quantity are both 0.
5. The method for rapidly curing a positive plate of a storage battery according to claim 1, wherein the positive plate is transferred to a curing chamber for curing within 15 minutes after the end of braising.
6. The method for rapidly curing a positive electrode plate of a storage battery according to claim 1, wherein in the step (3), the curing process is as follows:
(3-1) the temperature is 80 ℃, the humidity is 30%, and the curing time is 5.5 hours;
(3-2) the temperature is 80 ℃, the humidity is 0, and the curing time is 7.5 hours;
(3-3) temperature 55 ℃, humidity 0, curing time 1 hour.
7. The method for rapid solidification of a positive electrode plate for a secondary battery according to claim 6, wherein in the step (3), the steam humidification and the atomized water humidification are turned off,
in the step (3-1), the moisture removal air quantity is opened by 70 percent, the circulating air quantity is opened by 95 percent,
in the step (3-2), the moisture removal air quantity is opened by 95 percent, the circulating air quantity is opened by 95 percent,
in the step (3-3), the moisture removal air quantity is opened by 95%, and the circulating air quantity is opened by 95%.
8. The rapid solidification method of the positive plate of the storage battery according to claim 1, wherein the formula of the lead paste is as follows by mass percent: 0.05 to 0.10 percent of stannous sulfate, 0.20 to 0.30 percent of antimonous oxide, 0.20 to 0.40 percent of colloidal graphite, 3.0 to 5.0 percent of red lead powder, 0.08 to 0.12 percent of polyester staple fiber and the balance of lead powder with the oxidation degree of 72 to 78 percent.
9. The method for rapidly curing a positive plate of a storage battery according to claim 1, wherein the apparent density of the lead plaster is 4.45-4.55 g/cm 3 The highest temperature of the mixed paste is 68-70 ℃ and the temperature of the discharged paste is 42-46 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311722609.5A CN117855399A (en) | 2023-12-14 | 2023-12-14 | Rapid curing method for positive plate of storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311722609.5A CN117855399A (en) | 2023-12-14 | 2023-12-14 | Rapid curing method for positive plate of storage battery |
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| Publication Number | Publication Date |
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| CN117855399A true CN117855399A (en) | 2024-04-09 |
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- 2023-12-14 CN CN202311722609.5A patent/CN117855399A/en active Pending
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