LU502366B1 - Curing and drying method for wet lead paste electrode plate for long-life valve regulated lead acid battery - Google Patents
Curing and drying method for wet lead paste electrode plate for long-life valve regulated lead acid battery Download PDFInfo
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- LU502366B1 LU502366B1 LU502366A LU502366A LU502366B1 LU 502366 B1 LU502366 B1 LU 502366B1 LU 502366 A LU502366 A LU 502366A LU 502366 A LU502366 A LU 502366A LU 502366 B1 LU502366 B1 LU 502366B1
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- 238000001723 curing Methods 0.000 title claims abstract description 71
- 238000001035 drying Methods 0.000 title claims abstract description 49
- 239000002253 acid Substances 0.000 title claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 235000011149 sulphuric acid Nutrition 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 239000001117 sulphuric acid Substances 0.000 claims description 6
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 229910052924 anglesite Inorganic materials 0.000 abstract description 9
- 239000013078 crystal Substances 0.000 abstract description 8
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000002142 lead-calcium alloy Substances 0.000 abstract description 3
- 230000002028 premature Effects 0.000 abstract description 3
- 238000012795 verification Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 24
- 239000000243 solution Substances 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 239000013543 active substance Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910000004 White lead Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical class [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
-
- 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
-
- 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
- H01M4/22—Forming of electrodes
- H01M4/23—Drying or preserving electrodes after forming
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/56—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention discloses a curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery. The wet lead paste electrode plate for the lead acid battery comprises a positive electrode plate and a negative electrode plate and comprises a curing stage and a drying stage, wherein a method for the curing stage comprises: staged curing of the positive electrode plate: in a first stage, a temperature is controlled to gradually rise from 58°C to 78°C, and curing is conducted in wet air with the relatively humidity of 99.9% and a curing time of 8 h. In the present invention, by employing a high-humidity curing method with alternate high temperature and low temperature, through process tests for many times and repeated verification, the method of the present invention is obtained, so that the cured and dried electrode plate has the main component of 4PbO·PbSO4 crystals which are better than 3PbO·PbSO4 crystals, and the strength of the electrode plate may be strengthened; and a storage battery, assembled by using such electrode plate, is long in service life, can overcome a premature capacity loss caused by a lead-calcium alloy and may obviously prolong the service life of the valve regulated lead acid battery.
Description
CURING AND DRYING METHOD FOR WET LEAD PASTE ELECTRODE PLATE LU502366
FOR LONG-LIFE VALVE REGULATED LEAD ACID BATTERY
> [0001] 1. Technical Field
[0002] The present invention relates to the field of lead acid batteries, and in particular to a curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery. The valve regulated lead acid battery is mainly applied to a motorcycle.
[0003] 2. Description of Related Art
[0004] A valve regulated lead acid battery is also called VRLA battery. The VRLA battery employs a lean liquid design; the vast majority of an electrolyte is adsorbed by a diaphragm material, and a small amount of the electrolyte is adsorbed by effective substances of an electrode plate; an oxygen cycle is achieved through a mechanism of absorption and oxidation by a negative electrode; and moreover, there is no flowing electrolyte in the battery, so that the battery may work standing up or laying, and then the valve regulated lead acid battery is also called a “lean liquid battery”.
[0005] In the VRLA battery, a positive electrode plate grid and a negative electrode plate grid are both made of a Pb-Ca multicomponent alloy; and each grid is coated with a et lead paste, is cured in a curing chamber at a certain temperature and humidity and then is dried in a drying chamber after curing to obtain a green electrode plate. Each green electrode plate is subjected to an electrochemical reaction in an electrolyte solution with an H2SO4 solution as a main component and is converted to an electrode plate. Each green electrode plate has the main components of PbO in a form of a tetragonal crystal and tribasic lead sulfate and also a small quantity of metal lead, basic lead carbonate and tetrabasic lead sulfate.
[0006] Tetrabasic lead sulfate is beneficial to prolonging the service life of the lead acid battery; while a main body material of a battery of a motorcycle employs the Pb-Ca multicomponent alloy, the Pb-Ca multicomponent alloy battery is prone to a premature capacity loss to cause failure in service life of the battery in a charge-discharge cycle, and the service life of the battery is affected.
[0007] For this reason, how to solve the deficiencies in the prior art is a research topic of the present invention.
BRIEF SUMMARY OF THE INVENTION LU502366
[0008] To solve the above problems, the present invention discloses a curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery. > [0009] To achieve the objective, the present invention provides the following technical solution: disclosed is a curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery. The wet lead paste electrode plate for the valve regulated lead acid battery includes a positive electrode plate and a negative electrode plate and includes a curing stage and a drying stage,
[0010] where a method for the curing stage includes:
[0011] staged curing of the positive electrode plate: in a first stage, a temperature 1s controlled to gradually rise from 58°C to 78°C, and curing is conducted in wet air with the relatively humidity of 99.9% and a curing time of 8 h; and
[0012] in a second stage, the temperature is controlled to gradually decrease from 78°C to 50°C, the relative humidity is controlled to gradually decrease from 99.9% to 85%, and the curing time is 20 h.
[0013] Staged curing of the negative electrode plate:
[0014] in a first stage, a temperature is controlled to gradually rise from 55°C to 75°C, and curing is conducted in wet air with the relative humidity of 99.9% and a curing time of 8 h; and
[0015] in a second stage, the temperature is controlled to gradually decrease from 75°C to 50°C, the relative humidity is controlled to gradually decrease from 99.9% to 90%, and the curing time is 22 h.
[0016] A method for the drying stage includes:
[0017] staged drying of the positive electrode plate: in a first stage, a temperature is controlled to gradually rise from 45°C to 75°C, the relative humidity is controlled to gradually decrease from 70% to 0%, and the drying time is 4 h; and
[0018] in a second stage, the temperature is controlled to gradually decrease from 75°C to 30°C, the relative humidity is controlled to be 0%, and the drying time is 15 h;
[0019] staged drying of the negative electrode plate: in a first stage, the temperature is controlled to gradually rise from 45°C to 72°C, the relative humidity is controlled to gradually decrease from 80% to 0%, and the drying time is 3 h; and
[0020] in a second stage, the temperature is controlled to gradually decrease from 72°C to 30°C, the relative humidity is controlled to be 0%, and the drying time is 17 h.
[0021] In the above solution, a lead paste for the positive electrode plate includes the LU502366 following components in parts by weight: 990-1010 parts of lead powder, 100-110 parts of dilute sulphuric acid, 115-125 parts of deionized water, 1-1.5 parts of short fibers, 1.5-2.5 parts of graphite and 1-1.5 parts of 4BS; a lead paste for the negative electrode plate > includes the following components in parts by weight: 990-1010 parts of the lead powder, 70-80 parts of the dilute sulphuric acid, 110-120 parts of deionized water, 0.8-1.0 part of short fiber, 2.5-3.0 parts of humic acid, 1-1.5 parts of lignin, 7-9 parts of barium sulfide, 1.5-2.0 parts of acetylene black, 1-1.5 parts of stearic acid and 0.5-1 part of 4BS, where 4BS is the tetrabasic lead sulfate.
[0022] In the above solution, in staged curing of the positive electrode plate, a supply air rate in the first stage is controlled at 30%, and a supply air rate in the second stage is gradually increased from 30% to 45%.
[0023] In the above solution, in staged curing of the negative electrode plate, a supply air rate in the first stage is controlled at 30%, and a supply air rate in the second stage is gradually increased from 30% to 40%.
[0024] In the above solution, during curing and drying, wet lead paste electrode plates are placed on an electrode plate storage frame at an interval and are sent into a curing chamber; after curing is completed, a wet air discharge door is opened to discharge wet steam; and meanwhile, an air inlet door is opened, input fresh air is heated and then plown towards the electrode plates, and thus the electrode plates are dewatered and dried.
[0025] In the above solution, a specific gravity of the lead paste of the positive electrode plate is 4.08-4.15.
[0026] In the above solution, a specific gravity of the lead paste of the negative electrode plate is 4.35-4 45.
[0027] Only when the relative humidity approaches 100%, can one of changes in water loss-curing process of the lead paste be slowly conducted. When each wet lead paste electrode plate is in the curing chamber, temperatures of the electrode plate itself and nearby the plate surface can be higher than a room temperature, the reason for which is heat release with oxidation reaction of free metallic lead in the electrode plate; at this time, if the relative temperature is low, a water loss rate can be rapid, a dense crystal is difficult to form, and crude and sparse dry lead pastes easily fall off in a whole block; and when the procedure just enters drying after curing is completed, an oxidation rate of Pb is the fastest, which shows that heat is released fastest and most when the curing is completed and drying is started, mainly because the humidity starts to decrease from a state close to saturation, the porosity of the electrode plate is increased, oxygen conduction is facilitated, LU502366 and a certain humidity better facilitates lead oxidation. In the earlier stage of drying, the rest free Pb is rapidly oxidized, most of the Pb is oxidized, and a water loss rate of the electrode plate is rapid; in the later stageof drying, lead oxidation and water loss are > conducted at reduced speeds and the humidity of the drying chamber of 0%, until the electrode plate is dried.
[0028] By employing a high-humidity curing method with alternate high temperature and low temperature, a green electrode plate with the main component of 4PbO-PbSO4 can be obtained, and the lead paste is guaranteed to contain suitable component of 3PbO-PbSO4, which can prolong the service life of the battery and also satisfy the capacity of the battery.
[0029] Compared with the prior art, the present invention has the following advantages that: by employing the high-humidity curing method with the alternate high temperature and low temperature, through process tests for many times and repeated
Verification, the method of the present invention is obtained, so that the cured and dried electrode plate has the main component of 4PbO-PbSO4 crystals which are better than 3PbO-PbSO4 crystals, and the strength of the electrode plate may be strengthened; and a storage battery, assembled by using such electrode plate, is long in service life (the end of the life of the storage battery is due to corrosion of the grids rather than falling of active substances), can overcome a premature capacity loss caused by a lead-calcium alloy and may obviously prolong the service life of the valve regulated lead acid battery.
[0030] Further, 4BS seed crystals are further added to a positive electrode addictive, so that a lead-calcium alloy grid and the active substances form a good corrosion layer, and binding force and adhesive strength of the active substances of the green electrode plate are strengthened; and the formed 4BS seed crystals are small and uniformly distributed, which may further prolong the service life of the storage battery.
[0031] The present invention will be further described below in combination with specific implementations. It should be understood that these implementations are used for construing the present invention only, but not limiting its scope.
[0032] In the following embodiments and comparative examples, curing and drying equipment with a model of GH-1, manufactured by Chongqing Jiangling Industrial Co.,
Ltd. was employed for curing and drying; during curing and drying, wet lead paste electrode plates were placed on an electrode plate storage frame and sent into a curing LU502366 chamber, process and program numbers were selected, a start key was pressed, and the curing chamber entered a curing stage; a temperature and humidity controller detected indoor temperature value and humidity value through an indoor temperature and humidity > sensor, and recirculating air produced by a variable-frequency fan blew wet steam and heat toward the electrode plates; after a curing program was ended, the procedure turned to a drying program, a wet air discharge door was opened, a moisture discharge fan ran to discharge the wet steam, an air inlet door was opened at the same time, and input fresh air was heated and then blown toward the electrode plates to enable the electrode plates to be dewatered and dried;
[0033] where a lead paste for a positive electrode plate includes the following components in parts by weight: 990 parts of lead powder, 100 parts of dilute sulphuric acid, 115 parts of deionized water, 1 part of short fibers, 1.5 parts of graphite and 1 part of 4BS;
[0034] a lead paste for a negative electrode plate includes the following components in parts by weight: 990 parts of the lead powder, 70 parts of the dilute sulphuric acid, 110 parts of deionized water, 0.8 part of short fiber, 2.5 parts of humic acid, 1 part of lignin, 7 parts of barium sulfide, 1.5 parts of acetylene black, 1 part of stearic acid and 0.5 part of
ABS (where 4BS is tetrabasic lead sulfate); a specific gravity of the lead paste of the positive electrode plate is 4.08; and a specific gravity of the lead paste of the negative electrode plate is 4.35.
[0035] Embodiments 1-3:
Annexed Table 1: Curing method for positive electrode plate in Embodiments 1-3
Temperature °C | Temperature °C | Temperature °C quantity % rr mrt 1
TOUT rrr == rrr
POLE errr cr rr
Annexed Table 2: Drying method for positive electrode plate in Embodiments 1-3
Stage Embodiment 1 Embodiment 2 Embodiment 3 | Humidity % Time h Fan frequency
Temperature °C | Temperature °C | Temperature °C Hz ' me m m a [wow owe rw
Annexed Table 3: Curing method for negative electrode plate in Embodiments 1-3
Stage Embodiment 1 Embodiment 2 Embodiment 3 | Humidity % | Time h Air
Temperature °C | Temperature °C | Temperature °C quantity %
HEE EEE
1
HEE
HERE EE errr 2 mr
Annexed Table 4: Drying method for negative electrode plate in Embodiments 1-3
Stage Embodiment 1 Embodiment 2 Embodiment 3 | Humidity % | Timeh | Fan frequency
Temperature °C | Temperature °C | Temperature °C Hz os | 08 | 8 | ® |!" | # [Fw ww rw mw Te rw vw wv ww] wow we rw
[0036] Embodiment 4
Annexed Table 5: Curing method for positive electrode plate in Embodiments 4
Embodiment 4 Air
Stage 4 Time h ;
Temperature °C _ quantity %
Humidity % 1 # | 8 | 8 | ® 8 | 9 | # | #
EERE
EERE EN
’ = | # | | m
Annexed Table 6: Drying method for positive electrode plate in Embodiments 4
Embodiment 4 Fan
Stage 4 Time h
Temperature °C Co frequency Hz
Humidity % sv rw nv ww no [woe rw]
Annexed Table 7: Curing method for negative electrode plate in Embodiments 4
Embodiment 4 Air
Stage 4 Time h ;
Temperature °C Co quantity %
Humidity % os re ' 8 | 9 | B | om 15 | 8 | 88 | *
LOT m) | * ’ 1 # ee
Annexed Table 8: Drying method for negative electrode plate in Embodiment 4
Embodiment 4 Fan
Stage 4 Time h
Temperature °C Co frequency Hz
Humidity % os ow |} | # pr qe PS mv we [ow] : [wow rw]
[0037] Comparative Example 1:
Annexed Table 9: Curing method for positive electrode plate in Comparative Example 1
Stage Comparative Example 1 Humidity % Time h Air quantity %
Temperature °C sm
LT TT”
TT LT NT NT rr
LS TT TT
Annexed Table 10: Drying method for positive electrode plate in Comparative Example 1
Stage Comparative Example 1 Humidity % Time h Fan frequency Hz
Temperature °C we ww we rw] Annexed Table 11: Curing method for negative electrode plate in Comparative Example 1
Stage Comparative Example 1 Humidity % Time h Air quantity %
Temperature °C rm re re rr
Annexed Table 12: Drying method for negative electrode plate in Comparative Example 1
Stage Comparative Example 1 Humidity % Time h Fan frequency Hz
Temperature °C rr 8 | ® | EN % LU502366 ee rw se ew vw vw ow we rw]
[0038] Comparative Example 2:
Annexed Table 13: Curing method for positive electrode plate in Comparative Example 2
Comparative Example ; Air
Stage Humidity % Time h ; 2 Temperature °C quantity % sw | + | * oe | ow | # | *
BEN os ee ’ | = | # |? | #
Annexed Table 14: Drying method for positive electrode plate in Comparative Example 2
Comparative _ ; Fan frequency
Stage Example 2 Humidity % Time h H
Z
Temperature °C
IEE | 8 | UV 8 ; mv rw vv [ww a [wow pw
Annexed Table 15: Curing method for negative electrode plate in Comparative Example 2
Stage Comparative Humidity % Time h Air
Example 2 quantity %
Temperature °C
EEE
1 rE rrr rrr
Annexed Table 16: Drying method for negative electrode plate in Comparative Example 2
Fan
Stage Example 2 Humidity % Time h frequency Hz
Temperature °C
KO nove
Cm vw ow
ZEN
[0039] For batteries manufactured in the above embodiments and comparative examples, heavy-loaded lives are shown in Annexed Table 17:
[0040] A method and standard conditions for testing the lives are as follows: > [0041] each manufactured electrode plate was subjected to assembly, acid pouring and formation according to a BTX20-BS assembly process to obtain a lead acid battery, and then a performance test was conducted.
[0042] 1) A test for the heavy-loaded life is as follows:
[0043] Based on the Japanese Industrial Standards JIS D 5302: 2004 lead acid battery for a motorcycle;
[0044] 2) at the temperature 40-45°C, the battery was discharged for 1 h at a constant current of 5 À and charged for 5 h at 1.25 A, one charge-discharge cycle was one cycle life; the battery was continuously discharged at a current of 5 À every 50 times, and a final voltage was 10.2 V; and when a discharge capacity is lower than 40% of a rated capacity and is confirmed not to raise again, the test ended.
Annexed Table 17 Comparison on heavy-loaded lives of batteries
Number | Number Standard Comparative Embodiment 1 Embodiment 2 Embodiment 3 ofcycle | requirement Example 1 Cro% Cro% Cro% life Cro% pa [ew | ws | mw | ws] ww]
400 >40% 36.42 (life 89.42 88.72 87.79
MM N
AA rw ew wr ee we
Te 1 ee ee
I A
Te ewe ee ew ew
IC 1 CC
I 1e CL
Te ee we ee ws
Te we ee aw ww 18 >40% 38.86 (life 36.72 (life ends) 35.41 (life ends)
Ctl eT
Number | Number Standard Comparative Example 2 Embodiment 4 of cycle | requirement Cro% Cro% ee] TT
Tw [ew me wm
Fe [ew ws en [ew | eww | we ow ew
Tw ew ee rw ew er
Te [ew ew
Tm ew ee
Tm ew es
Te 1e
Te ew ew
Fm [ew ew
Results of testing 4PbO-PbSO4 in each lead paste electrode plate manufactured in the above Embodiments 1-4 and Comparative Examples 1-2 are shown in a following table:
Embodiment Embodiment Embodiment Embodiment Comparative Comparative 1 2 3 4 Example 1 Example 2
Content of 4PbO-PbSO4 in positive 66.85 66.12 65.42 65.08 34.26 40.57 electrode plate
Content of 4PbO-PbSO4 in negative 62.64 62.08 61.87 61.53 31.06 36.82 electrode plate
[0045] Here, a content of the tetrabasic lead sulfate was detected by using an X-ray diffractometer (XRD).
[0046] The technical means disclosed by the technical solution of the present invention are not limited to these disclosed in the above implementations and further include the technical solution formed by any combination of the above technical features.
It should be noted that several improvements and embellishments may also be made without departing from the principles of the present invention to those of ordinary skill in the art, and these improvements and embellishments should also be considered to fall within the protection scope of the present invention.
Claims (7)
1. À curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery, the wet lead paste electrode plate for the valve regulated lead acid battery includes a positive electrode plate and a negative electrode plate, wherein includes a curing stage and a drying stage, a method for the curing stage includes: staged curing of the positive electrode plate: in a first stage, a temperature is controlled to gradually rise from 58°C to 78°C, and curing is conducted in wet air with the relatively humidity of 99.9% and a curing time of 8 h; and in a second stage, the temperature is controlled to gradually decrease from 78°C to 50°C, the relative humidity is controlled to gradually decrease from 99.9% to 85%, and the curing time is 20 h. staged curing of the negative electrode plate: in a first stage, a temperature is controlled to gradually rise from 55°C to 75°C, and curing is conducted in wet air with the relative humidity of 99.9% and a curing time of 8 h; and in a second stage, the temperature is controlled to gradually decrease from 75°C to 50°C, the relative humidity is controlled to gradually decrease from 99.9% to 90%, and the curing time is 22 h. a method for the drying stage includes: staged drying of the positive electrode plate: in a first stage, a temperature is controlled to gradually rise from 45°C to 75°C, the relative humidity is controlled to gradually decrease from 70% to 0%, and the drying time is 4 h; and in a second stage, the temperature is controlled to gradually decrease from 75°C to 30°C, the relative humidity is controlled to be 0%, and the drying time is 15 h; staged drying of the negative electrode plate: in a first stage, the temperature is controlled to gradually rise from 45°C to 72°C, the relative humidity is controlled to gradually decrease from 80% to 0%, and the drying time is 3 h; and in a second stage, the temperature is controlled to gradually decrease from 72°C to 30°C, the relative humidity is controlled to be 0%, and the drying time is 17 h.
2. The curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery according to claim 1, wherein a lead paste for the positive electrode plate includes the following components in parts by weight: 990-1010 parts of lead powder, 100-110 parts of dilute sulphuric acid, 115-125 parts of deionized water,
1-1.5 parts of short fibers, 1.5-2.5 parts of graphite and 1-1.5 parts of 4BS; a lead paste for the negative electrode plate includes the following components in parts by weight: 990-1010 parts of the lead powder, 70-80 parts of the dilute sulphuric acid, 110-120 parts of deionized water, 0.8-1.0 part of short fiber, 2.5-3.0 parts of humic acid, 1-1.5 parts of lignin, 7-9 parts of barium sulfide, 1.5-2.0 parts of acetylene black, 1-1.5 parts of stearic acid and 0.5-1 part of 4BS.
3. The curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery according to claim 1, wherein in staged curing of the positive electrode plate, a supply air rate in the first stage is controlled at 30%, and a supply air rate in the second stage is gradually increased from 30% to 45%.
4. The curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery according to claim 1, wherein in staged curing of the negative electrode plate, a supply air rate in the first stage is controlled at 30%, and a supply air rate in the second stage is gradually increased from 30% to 40%.
5. The curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery according to claim 1,wherein during curing and drying, wet lead paste electrode plates are placed on an electrode plate storage frame at an interval and are sent into a curing chamber; after curing is completed, a wet air discharge door is opened to discharge wet steam; and meanwhile, an air inlet door is opened, input fresh air is heated and then blown towards the electrode plates, and thus the electrode plates are dewatered and dried.
6. The curing and drying method for a wet lead paste electrode plate for a long-life valve LV502366 regulated lead acid battery according to claim 1, wherein a specific gravity of the lead paste of the positive electrode plate is 4.08-4.15.
7. The curing and drying method for a wet lead paste electrode plate for a long-life valve regulated lead acid battery according to claim 1, wherein a specific gravity of the lead paste of the negative electrode plate is 4.35-4.45.
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| CN202110774545.8A CN113506859B (en) | 2021-07-08 | 2021-07-08 | Curing and drying method for long-life valve-regulated lead-acid storage battery wet lead plaster polar plate |
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| LU502366B1 true LU502366B1 (en) | 2023-02-08 |
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| LU (1) | LU502366B1 (en) |
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| CN113506859B (en) * | 2021-07-08 | 2022-04-26 | 江苏理士电池有限公司 | Curing and drying method for long-life valve-regulated lead-acid storage battery wet lead plaster polar plate |
| CN114256445A (en) * | 2021-12-15 | 2022-03-29 | 肇庆理士电源技术有限公司 | Method for manufacturing deep-circulation small-sized valve-controlled lead-acid storage battery pole plate |
| CN114267835A (en) * | 2021-12-28 | 2022-04-01 | 河南超威正效电源有限公司 | Lead paste of lead-acid storage battery, preparation method of lead paste, pole plate and curing process of pole plate |
| CN114204033A (en) * | 2021-12-28 | 2022-03-18 | 河南超威正效电源有限公司 | Lead paste of lead-acid storage battery, preparation method of lead paste, pole plate and high-temperature curing process of pole plate |
| CN114566617B (en) * | 2022-01-27 | 2024-01-02 | 淄博火炬能源有限责任公司 | Wet tubular positive electrode and method for manufacturing same |
| CN114551815B (en) * | 2022-02-16 | 2023-09-22 | 天能电池集团(马鞍山)新能源科技有限公司 | Lead storage battery polar plate curing method |
| CN116404119A (en) * | 2023-03-07 | 2023-07-07 | 安徽力普拉斯电源技术有限公司 | A kind of lead-acid storage battery polar plate curing method |
| CN118248842B (en) * | 2024-05-27 | 2024-08-09 | 淄博火炬能源有限责任公司 | Negative electrode plate of lead-acid storage battery and preparation method of negative electrode plate with environment protection and low energy consumption |
| CN120033215B (en) * | 2025-04-21 | 2025-08-12 | 广东金悦诚蓄电池有限公司 | Curing process of storage battery polar plate |
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| US7091250B2 (en) * | 2002-12-24 | 2006-08-15 | Penox Gmbh | Additive for producing a positive active material for lead-acid storage batteries, a method for its production and a method for its use |
| CN105070886B (en) * | 2015-09-21 | 2016-05-25 | 骆驼集团襄阳蓄电池有限公司 | A kind of AGM start and stop accumulator anode board curing process |
| CN105428603B (en) * | 2015-11-19 | 2017-10-31 | 浙江天能动力能源有限公司 | A kind of curing process of lead-acid battery negative pole plate |
| CN105720266B (en) * | 2016-03-29 | 2018-10-02 | 安徽省华森电源有限公司 | High-performance lead-acid accumulator lead plaster |
| CN107706358A (en) * | 2017-09-26 | 2018-02-16 | 安徽轰达电源有限公司 | A kind of polar plate solidification technique prepared for accumulator plate |
| CN108232123B (en) * | 2017-12-26 | 2020-05-12 | 浙江天能动力能源有限公司 | Curing process for positive plate of lead-acid storage battery for electric automobile |
| CN109065846B (en) * | 2018-07-28 | 2020-09-22 | 河南超威电源有限公司 | Lead-acid battery positive plate curing process |
| CN109873124A (en) * | 2019-01-31 | 2019-06-11 | 安徽超威电源有限公司 | A kind of power lead-acid storage battery high temperature curing process |
| CN110400909B (en) * | 2019-07-29 | 2020-08-28 | 浙江天能电池(江苏)有限公司 | Natural curing process for negative plate of lead-carbon storage battery |
| CN113506859B (en) * | 2021-07-08 | 2022-04-26 | 江苏理士电池有限公司 | Curing and drying method for long-life valve-regulated lead-acid storage battery wet lead plaster polar plate |
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- 2021-07-08 CN CN202110774545.8A patent/CN113506859B/en active Active
- 2021-12-15 LU LU502366A patent/LU502366B1/en active IP Right Grant
- 2021-12-15 WO PCT/CN2021/138273 patent/WO2023279668A1/en not_active Ceased
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| Publication number | Publication date |
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| LU502366A1 (en) | 2023-01-09 |
| CN113506859B (en) | 2022-04-26 |
| CN113506859A (en) | 2021-10-15 |
| WO2023279668A1 (en) | 2023-01-12 |
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