CN114050329B - Maintenance-free automobile storage battery production process - Google Patents
Maintenance-free automobile storage battery production process Download PDFInfo
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- CN114050329B CN114050329B CN202111430514.7A CN202111430514A CN114050329B CN 114050329 B CN114050329 B CN 114050329B CN 202111430514 A CN202111430514 A CN 202111430514A CN 114050329 B CN114050329 B CN 114050329B
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- 238000003860 storage Methods 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000002253 acid Substances 0.000 claims abstract description 120
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 66
- 239000003792 electrolyte Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 36
- 238000010409 ironing Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 description 34
- 238000007789 sealing Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000001514 detection method Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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)
- Filling, Topping-Up Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a maintenance-free automobile storage battery production process, and relates to the technical field of formation. The production process comprises the steps of firstly assembling a storage battery, wherein the storage battery comprises a battery groove and a middle cover; wherein, the top surface of the middle cover is provided with an acid adding hole, and a blind hole for processing into an exhaust hole is reserved on the middle cover; adding acid into the storage battery, and adding electrolyte with a first density; connecting a plurality of acid-added storage batteries in series by using an acid inlet pipe and an acid outlet pipe which extend into the acid adding holes; and then connecting acid circulation equipment, starting acid circulation, forming, controlling the density of electrolyte to be at a second density in the forming process, adjusting the electrolyte of the storage battery to be at a final density after forming, ironing the blind holes to form vent holes, and then installing a cover plate. The production process provided by the invention does not realize through holes at first when the middle cover is injection molded, and the through holes are concave holes, the aperture is 5-12mm, and the bottom thickness is 0.5-1.5mm.
Description
Technical Field
The invention relates to the technical field of formation, in particular to a maintenance-free automobile storage battery production process.
Background
At present, a PE separator is adopted for an automobile maintenance-free (SLI/EFB) storage battery, and is of a rich liquid structure, and high-density acid (1.15 g/cm) is mostly adopted in a water bath tank during battery formation 3 Above), the formation is carried out for a long time due to high density of the electrolyte, water bath is needed for cooling, the acid liquor in the battery is poured out on an acid pouring machine after the formation is finished, and the acid pouring machine is used for adding high-density acid (1.30 g/cm) 3 Left and right), the liquid level of the battery is adjusted to the same position by a liquid level adjusting machine, thereby realizing that the density of the battery is 1.28g/cm when the battery leaves the factory 3 . In this way, the acid liquor is not poured cleanly due to the unevenness in the cover body,the consistency of the internal density of the battery after the acid is added is poor, which is not beneficial to the quality control of the maintenance-free battery.
The application publication number CN103400947B discloses a maintenance-free lead-acid battery closure cap and a maintenance-free lead-acid battery, which provides a maintenance-free lead-acid battery closure cap, comprising: the first cover plate is provided with a liquid hole and a first tank way communicated with the liquid hole; the second cover plate is provided with a liquid hole plug matched with the liquid hole and a second tank way matched with the first tank way to form a passage, and the liquid hole plug is provided with a gap communicated with the second tank way; and the pressure limiting device is arranged at the tail end of a passage formed by matching the first tank circuit and the second tank circuit. Meanwhile, the maintenance-free lead-acid storage battery is also provided, and the maintenance-free lead-acid storage battery sealing cover comprises the maintenance-free lead-acid storage battery sealing cover. The maintenance-free lead-acid storage battery sealing cover is provided with the gas-liquid conversion chamber, oxygen and hydrogen generated by the positive plate and the negative plate of the storage battery can be compounded into water in the gas-liquid conversion chamber to flow back, gas and sulfuric acid drops of the storage battery are effectively prevented from overflowing, and the water loss is less during charging, so that the electrolyte of the storage battery is ensured to be sufficient, and the cycle service life of the storage battery is prolonged.
The application patent with publication number of CN100596344C discloses an acid circulation method for battery formation of a lead-acid storage battery, the battery formation adopts a battery assembly mode, a special battery connector is adopted for assembling an acid circulation system, the formation electrolyte is low in density, the problems of insufficient acid quantity and formation cooling of the formation electrolyte are solved by utilizing an external circulation mode of the electrolyte, and meanwhile, the acid circulation method can also circulate sediment inside the battery to the outside of the battery through electrolyte circulation in the formation process, so that a cleaning effect is achieved. The heat generated in the battery in the formation process is taken out of the battery through the circulation of the acid liquor, and the battery is cooled. The density of the electrolyte can be automatically adjusted in the formation process, so that the electrolyte is always formed under a constant density. The liquid level of the battery electrolyte can be automatically adjusted to meet the requirement of the battery when the battery leaves the factory. The formation time can be shortened to about (1-3) days.
The existing maintenance-free storage battery cover body structure has the defects that the sealing of acid circulation cannot be realized while maintenance-free is considered on the storage battery cover because of the 6 liquid injection holes and the 12 exhaust holes (due to the exhaust requirement), so that the structure cannot be applied to acid circulation equipment.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a maintenance-free automobile storage battery production process.
The invention provides a maintenance-free automobile storage battery production process, which comprises the following steps of:
(1) Firstly, assembling a storage battery, wherein the storage battery comprises a battery groove and a middle cover; wherein, the top surface of the middle cover is provided with an acid adding hole, and a blind hole for processing into an exhaust hole is reserved on the middle cover;
(2) Adding acid to the battery, adding an electrolyte having a first density; the method comprises the steps of connecting a plurality of acid-added storage batteries in series through acid inlet pipes and acid outlet pipes which extend into acid adding holes, wherein each acid adding hole is respectively provided with an acid inlet pipe and an acid outlet pipe; then connecting acid circulation equipment, starting acid circulation, forming, controlling the density of electrolyte to be at a second density in the forming process, adjusting the electrolyte of the storage battery to be at a final density after forming,
wherein the first density is less than the termination density and the second density is less than the first density;
(3) And (5) ironing the blind holes to form exhaust holes, and then installing a cover plate.
Preferably, the cover sheet is heat sealed with a heat sealer.
After the formation is finished, acid pouring, secondary acid adding, liquid level adjustment and liquid level detection are not needed, so that equipment investment, corrosion of acid to the site and occupation of production sites are reduced.
Preferably, the aperture of the blind hole in the step (1) is 5-12mm, and the thickness of the bottom surface is 0.5-1.5mm.
According to the capacity of the battery, the aperture is selected to be 5-12mm, so that the discharge of gas in the use process of the battery can be ensured, and acid liquor can be prevented from splashing on a cover plate when the battery vibrates in use due to overlarge aperture; the thickness of the bottom surface is 0.5-1.5mm, so that the battery can be sealed during acid cycle charging, and meanwhile, the convenience of processing during hole stamping in a lower line is ensured.
Preferably, the first density electrolyte has a density of 1.100.+ -. 0.005g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The density of the second density electrolyte is 1.045+/-0.005 g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The termination density of the electrolyte is 1.280+/-0.005 g/cm 3 。
Preferably, the first density electrolyte has a density of 1.098-1.100g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the In the formation process, the density of the second density electrolyte is 1.043-1.045g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the After formation, the termination density of the electrolyte was 1.280g/cm 3 。
Compared with the existing production process, the electrolyte density is low, the extracorporeal circulation of the electrolyte is realized by using acid circulation, and the sufficient acid quantity is ensured when the storage battery is charged. And the density of the electrolyte is automatically adjusted in the formation process, so that the electrolyte is always formed at a low density. Therefore, the charging efficiency can be improved, the charging amount can be reduced, and the electricity consumption cost during battery formation can be reduced.
Specifically, during formation, the temperature of the electrolyte is controlled to be 40-50 ℃.
The heat generated in the formation process can be taken out from the inside of the storage battery through acid circulation, and meanwhile, the external electrolyte can be heated, so that the temperature change in the formation of the storage battery is controlled, the formation bath is not required to cool (and the water bath can only cool and cannot heat).
Specifically, the current is formed by stages during formation:
the first stage: at 0.3-0.6C 20 Current A, charging for 2h;
and a second stage: at 0.15-0.3C 20 And A, charging for 6-15h.
The method is formed in two stages, and compared with water bath formation, the method can reduce the charging multiplying power and reduce the electricity consumption cost during battery formation.
Preferably, in the formation, the charging rate is 2.5-3.5C 20 。
Preferably, the formation time is 8-17 hours.
The low-density constant-temperature formation can greatly shorten the formation time, and the whole formation period is about 8-17 hours.
The invention also provides application of the maintenance-free automobile storage battery production process in preparation of maintenance-free automobile storage batteries.
The invention mainly aims at the problems that the existing automobile maintenance-free storage battery cover is complex in structure and can not realize the internal formation on acid circulation equipment, and provides a battery structure and a production mode which are simple and convenient in structure and operation, can realize the low-density rapid internal formation of acid circulation, do not need acid pouring after the battery formation is completed, do not need acid extraction and liquid level adjustment.
The invention has the beneficial effects that:
(1) The invention provides a maintenance-free automobile storage battery production process, wherein a through hole is not realized during injection molding of a middle cover, the through hole is a concave hole, the aperture is 5-12mm, and the thickness of the bottom surface is 0.5-1.5mm. The battery has the advantages that the gas is discharged in the use process of the battery, the acid can be prevented from splashing due to overlarge holes, and meanwhile, the sealing of the battery during acid circulation charging and the convenience in hole scalding after offline are guaranteed.
(2) The positive pressure inside the storage battery can be ensured when the acid circulation connecting bolt is used for connection, no liquid leakage can be caused, the acid circulation formation can be realized, and the improvement of the product quality is facilitated.
(3) Meanwhile, after the formation is finished, acid pouring, secondary acid adding, liquid level adjustment and liquid level detection are not needed, so that equipment investment, corrosion of acid to the site and occupation of production sites are reduced.
Drawings
Fig. 1 is a middle cover diagram of a maintenance-free battery for an automobile according to the present invention.
Fig. 2 is a front view of fig. 1 at 2.
FIG. 3 is a diagram showing a battery connection plug for acid cycle according to the present invention.
Reference numerals: 1 is a pole sleeve; 2 is a blind hole; 3 is a middle cover; 4 is a connecting bolt body; 5 is a rubber ring; 6 is an acid inlet pipe; 7 is an acid outlet pipe.
Detailed Description
Example 1
The invention relates to an automobile maintenance-free storage battery structure which can meet the requirement of acid cycle internal formation, and comprises a battery groove, a middle cover and a cover plate, wherein the side walls of the battery groove are sealed together, the groove cavity of the battery groove is divided into 6 single grids, each single grid is provided with a pole group, the 6 pole groups are connected through wall penetration welding, positive and negative terminals are respectively arranged at the two pole groups, and finally, the middle cover is also provided with an exhaust hole, and the cover plate is provided with an acid filtering plate, so that the discharge of hydrogen and oxygen generated during charging can be realized, the discharge of acid liquor can be prevented, and the formation can be performed on acid cycle equipment while the maintenance-free storage battery is ensured.
The middle cover is provided with the vent holes at the outer part of each single cell, the vent holes are not realized during injection molding of the middle cover, the aperture is 5-12mm, the wall thickness is 0.5-1.5mm upwards, so that the middle cover is provided with only 6 liquid injection holes, the inside of the storage battery can be ensured to be positive pressure and no liquid leakage when the battery connection bolt for acid circulation is used for connection, the acid circulation formation can be realized, and the improvement of the product quality is more facilitated.
The middle part of each single lattice of the middle cover is provided with a liquid injection hole, the specific structure is shown in fig. 1, and fig. 1 is a diagram of the middle cover of the automobile maintenance-free storage battery. In the structure diagram shown in fig. 1, 1 is a pole sleeve; 2 is a blind hole; and 3 is a middle cover. Fig. 2 is a front view of fig. 1 at 2.
The battery connecting bolt for acid circulation is arranged in the liquid injection hole, the circulating bolt is provided with two grooves for installing sealing rubber rings, the grooves are provided with rubber rings with the diameters of 2mm, the battery connecting bolt for acid circulation is in clearance fit with the liquid holes, and the rubber rings are in interference fit, so that the battery connecting bolt for acid circulation can be rapidly installed on the liquid injection hole of the storage battery, sealing function can be realized, and acid liquid is guaranteed not to overflow from an acid injection port when acid is circulated, and acid circulation is realized.
The structure of the acid cycle connection plug is shown in fig. 3, and fig. 3 shows the connection plug for the battery for acid cycle according to the present invention. In the structure diagram shown in fig. 3, 4 is a connecting bolt body; 5 is a rubber ring; 6 is an acid inlet pipe; 7 is an acid outlet pipe.
The height difference between the bottom end of the acid inlet pipe and the bottom end of the acid outlet pipe of the battery connecting bolt for acid circulation is 25+/-5 mm, and the bottom end height of the acid outlet pipe is the liquid level height of electrolyte of the battery leaving factory.
The low-density acid is adopted when the storage battery is added with acid, the constant density is adopted for formation during formation, the temperature of electrolyte is controlled within a constant range (40-50 ℃), the formation time is 8-17 hours, and the formation current is adoptedStaged into a first stage: at 0.3-0.6C 20 Current A, charging for 2h; and a second stage: at 0.15-0.3C 20 And A, charging for 6-15h. The charging multiplying power is 2.5-3.5C 20 Wherein C 20 Is the 20 hour rate capacity of the battery.
The existing maintenance-free storage battery production process flow comprises the following steps:
acid adding of a battery, water bath formation, acid pouring, secondary acid adding, liquid level adjustment, liquid level detection, secondary heat sealing, water washing and offline.
The invention relates to a maintenance-free storage battery production process flow:
acid adding, acid circulation forming, air burning and exhausting hole burning, secondary heat sealing, water washing and line discharging of the battery.
Therefore, after the formation is finished, the acid is not poured, the acid is added for the second time, and the liquid level is adjusted, and the exhaust hole is only required to be ironed on the hole ironing machine, so that the secondary heat sealing can be carried out.
Placing the assembled storage battery on a roller way table in 20 groups (rated voltage of a charger is 400 v), connecting a battery connecting bolt for acid circulation to an acid injection port of the storage battery, starting acid circulation equipment, and injecting the storage battery with the density of 1.100+/-0.005 g/cm 3 Electrolyte (density at 25 ℃ standard temperature), soaking for 30 minutes after filling the electrolyte, starting a charging and discharging device to perform storage battery formation, wherein the density of the electrolyte is controlled to be 1.045+/-0.005 g/cm in the formation process 3 (density at 25 ℃ C.) after formation for a prescribed period of time, opening a high-density acid valve, starting acid exchange, and adjusting the electrolyte density to a termination density of 1.280+ -0.005 g/cm 3 (density at 25 ℃ C.) the liquid level is a specified height (electrolyte liquid level is determined in a known manner, different types of cells are required, different from the prior art manner), and the total cell formation time is 8-17 hours. After the storage battery is put down, the storage battery is transferred to a hole ironing machine, the hole ironing machine is adjusted to be positioned, a hole ironing die is aligned to a blind hole 2 (shown in figure 1) on a storage battery cover, the die is lifted up to a secondary heat sealing machine to carry out secondary heat sealing, and after heat sealing, the storage battery is put down after water washing and drying, the storage battery is transferred to heavy current detection.
For a further understanding of the present invention, reference will be made to the following examples.
Example 2
Take 6QW-45MF as an example:
a group of 20 cells was placed on a raceway table according to the operation method in example 1, an acid circulation plug was connected to the acid injection port of the cell, and an acid circulation device was turned on to inject a density of 1.100g/cm into the cell 3 Electrolyte (density at 25 ℃ standard temperature), which is fully filled and soaked for 30 minutes for battery formation, the formation process is as follows: 212h+12.5A6h, and controlling the density of electrolyte to 1.043g/cm in the formation process 3 (density at 25 ℃ C.) for 7 hours, then starting acid exchange, and adjusting the electrolyte density to a termination density of 1.280g/cm 3 (density at 25 ℃ C.) the liquid level was 25mm and the total cell formation time was 8 hours. After the battery is put down, the battery is transferred to a hole ironing machine, the hole ironing machine is adjusted to be positioned, a hole ironing die is aligned to a blind hole 2 (shown in figure 1) on a battery cover, the die is lifted up to a secondary heat sealing machine to carry out secondary heat sealing, and after heat sealing, the battery is put down after water washing and drying, the battery is transferred to high-current detection.
The electrical performance of the above-mentioned battery was measured, and the measured data are shown in Table 1 below, wherein the 6QW-45MF sample battery is obtained by the above-mentioned production process; the 6QW-45MF conventional battery is of a normal structure and is formed through water bath.
TABLE 1
As seen in Table 1, there was an improvement in the test performance data.
Example 3
Take 6QW-60MF as an example:
a group of 20 cells was placed on a raceway table according to the procedure of example 1, an acid circulation plug was connected to the cell acid injection port, and an acid circulation device was turned on to inject a density of 1.098g/cm into the cells 3 Electrolyte (density at 25 ℃ standard temperature), which is fully filled and soaked for 30 minutes for battery formation, the formation process is as follows: 242h+12a 10h, formationThe density of the electrolyte is controlled to be 1.045g/cm in the forming process 3 (density at 25 ℃ C.) for 10 hours, then starting acid exchange, and adjusting the electrolyte density to a termination density of 1.280g/cm 3 (density at 25 ℃ C.) the liquid level was 25mm and the total cell formation time was 13 hours. After the battery is put down, the battery is transferred to a hole ironing machine, the hole ironing machine is adjusted to be positioned, a hole ironing die is aligned to a blind hole 2 (shown in figure 1) on a battery cover, the die is lifted up to a secondary heat sealing machine to carry out secondary heat sealing, and after heat sealing, the battery is put down after water washing and drying, the battery is transferred to high-current detection.
The electrical performance of the above-mentioned battery was measured, and the measured data are shown in Table 2 below, wherein the 6QW-60MF sample battery is obtained by the above-mentioned production process; the 6QW-60MF conventional battery is of a normal structure and is formed through water bath.
TABLE 2
As seen in Table 2, there was an improvement in the test performance data.
Example 4
Take 6QW-165MF as an example:
placing a group of 20 batteries on a roller path table according to the operation method, connecting an acid circulation bolt to an acid injection port of the batteries, starting an acid circulation device, and injecting the batteries with the density of 1.100g/cm 3 Electrolyte (density at 25 ℃ standard temperature), which is fully filled and soaked for 30 minutes for battery formation, the formation process is as follows: 66A+35A 15h formation process controls the electrolyte density at 1.045g/cm 3 (density at 25 ℃ C.) for 14 hours, then starting acid exchange, and adjusting the electrolyte density to a termination density of 1.280g/cm 3 (density at 25 ℃ C.) the liquid level was 30mm and the total cell formation time was 17 hours. Transferring the battery to a hole ironing machine after the battery is offline, adjusting the positioning of the hole ironing machine, aligning a hole ironing die with a blind hole 2 (shown in figure 1) on a battery cover, lifting the die to Kong Tangkai, performing secondary heat sealing by a secondary heat sealing machine, transferring the battery to a high-current detection after heat sealing by washing and drying, and unloading the battery。
The electrical performance of the above-mentioned battery was measured, and the measured data are shown in Table 3 below, wherein the 6QW-165MF sample battery is obtained by the above-mentioned production process; the 6QW-165MF conventional battery is of a normal structure and is formed through water bath.
TABLE 3 Table 3
As seen in Table 3, there was an improvement in the test performance data.
Claims (5)
1. The maintenance-free automobile storage battery production process is characterized by comprising the following steps of:
(1) Firstly, assembling a storage battery, wherein the storage battery comprises a battery groove and a middle cover; wherein, the top surface of the middle cover is provided with an acid adding hole, and a blind hole for processing into an exhaust hole is reserved on the middle cover;
the aperture of the blind hole in the step (1) is 5-12mm, and the thickness of the bottom surface is 0.5-1.5mm;
(2) Adding acid to the battery, adding an electrolyte having a first density; the method comprises the steps of connecting a plurality of acid-added storage batteries in series through acid inlet pipes and acid outlet pipes which extend into acid adding holes, wherein each acid adding hole is respectively provided with an acid inlet pipe and an acid outlet pipe; then connecting acid circulation equipment, starting acid circulation, forming, controlling the density of electrolyte to be at a second density in the forming process, adjusting the electrolyte of the storage battery to be at a final density after forming,
wherein the first density is less than the termination density and the second density is less than the first density;
the current is formed by stages during formation:
the first stage: at 0.3-0.6C 20 Current A, charging for 2h;
and a second stage: at 0.15-0.3C 20 Current A, charging for 6-15h;
(3) And (5) ironing the blind holes to form exhaust holes, and then installing a cover plate.
2. Maintenance-free automobile storage as claimed in claim 1A battery production process is characterized in that the density of the electrolyte added into the battery when the battery is added with acid is 1.100+/-0.005 g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the In the formation process, the density of the second density electrolyte is 1.045+/-0.005 g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the After formation, the termination density of the electrolyte was 1.280.+ -. 0.005g/cm 3 。
3. The maintenance-free automobile battery production process as claimed in claim 2, wherein the density of the electrolyte added to the battery during the acid addition is 1.098-1.100g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the In the formation process, the density of the second density electrolyte is 1.043-1.045g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the After formation, the termination density of the electrolyte was 1.280g/cm 3 。
4. The maintenance-free automobile storage battery production process according to claim 1, wherein the temperature of the electrolyte is controlled to be 40-50 ℃ during formation.
5. Use of a maintenance-free automotive battery production process according to any one of claims 1 to 4 for the production of a maintenance-free automotive battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430514.7A CN114050329B (en) | 2021-11-29 | 2021-11-29 | Maintenance-free automobile storage battery production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430514.7A CN114050329B (en) | 2021-11-29 | 2021-11-29 | Maintenance-free automobile storage battery production process |
Publications (2)
| Publication Number | Publication Date |
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| CN114050329A CN114050329A (en) | 2022-02-15 |
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| CN101308922A (en) * | 2007-06-19 | 2008-11-19 | 淄博蓄电池厂 | Battery formed acid loop method of lead acid battery |
| CN205406624U (en) * | 2016-02-27 | 2016-07-27 | 保定安驰蓄电池制造有限公司 | Novel non -maintaining power type lead -acid batteries of rich solution lid |
| CN106450503A (en) * | 2016-08-31 | 2017-02-22 | 巨江电源科技有限公司 | Formation method for maintenance-free lead-acid storage battery |
| CN111342158A (en) * | 2020-02-20 | 2020-06-26 | 天能电池集团股份有限公司 | Acid-pumping-free storage battery acidification formation method |
| WO2021142852A1 (en) * | 2020-01-19 | 2021-07-22 | 超威电源集团有限公司 | Method for manufacturing lead-acid battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101308922A (en) * | 2007-06-19 | 2008-11-19 | 淄博蓄电池厂 | Battery formed acid loop method of lead acid battery |
| CN205406624U (en) * | 2016-02-27 | 2016-07-27 | 保定安驰蓄电池制造有限公司 | Novel non -maintaining power type lead -acid batteries of rich solution lid |
| CN106450503A (en) * | 2016-08-31 | 2017-02-22 | 巨江电源科技有限公司 | Formation method for maintenance-free lead-acid storage battery |
| WO2021142852A1 (en) * | 2020-01-19 | 2021-07-22 | 超威电源集团有限公司 | Method for manufacturing lead-acid battery |
| CN111342158A (en) * | 2020-02-20 | 2020-06-26 | 天能电池集团股份有限公司 | Acid-pumping-free storage battery acidification formation method |
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