CN112952308A - Acid adding and vacuum formation integrated device and method for storage battery - Google Patents
Acid adding and vacuum formation integrated device and method for storage battery Download PDFInfo
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- CN112952308A CN112952308A CN202110337473.0A CN202110337473A CN112952308A CN 112952308 A CN112952308 A CN 112952308A CN 202110337473 A CN202110337473 A CN 202110337473A CN 112952308 A CN112952308 A CN 112952308A
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 169
- 239000002253 acid Substances 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007666 vacuum forming Methods 0.000 claims abstract description 23
- 230000020477 pH reduction Effects 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 18
- 230000001360 synchronised effect Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002477 vacuolizing effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an acid adding and vacuum forming integrated device and method for a storage battery. The storage battery acidification and vacuum integrated device comprises: a vacuum formation box, a formation tank and a quantitative acid adding system. The integrated device for adding acid and vacuumizing of the storage battery realizes synchronous acid adding, synchronous standing and synchronous power supply of the same-loop battery through integration of the acid adding and formation system, so that the conversion of the electrode plate substances is synchronous in the formation process of the battery, the consistency of the battery is effectively improved, the formation time of the battery can be greatly shortened, the formation efficiency is improved, the comprehensive performance of the battery can be improved, and particularly, the low temperature and the cycle life are prolonged by performing the formation in a temperature-controllable negative pressure environment.
Description
Technical Field
The invention relates to the technical field of storage battery production, in particular to an integrated device and method for acid adding and vacuum formation of a storage battery.
Background
Lead storage batteries have a history of over 160 years and have a wide range of applications. In recent years, electric vehicles have been rapidly developed in China by virtue of their better mobility, lower storage space requirements and excellent price advantages, and the storage battery industry has also been rapidly developed.
The formation and charging modes of the lead storage battery include plate exterior formation and battery interior formation. Due to environmental protection requirements, the formation of lead storage batteries has been basically switched to a battery formation mode (internal formation), and the control of acid addition and formation processes is also a hot point of research. In the battery internalization becomes the in-process, generally adopt water bath cooling or forced air cooling, the unable quick dissipation of the inside heat of battery and battery temperature wayward, in order to control the formation temperature of battery, must reduce charging current density to the extension becomes charge time, and formation efficiency is very low.
Meanwhile, in the current production mode, the acid adding process belongs to a production line, cooling water is fed after the whole formation tank is full after the acid is added, so that the time for filling one formation tank is long, the acid soaking time of the batteries is inconsistent, the formation state of each battery is inconsistent, the performance of the batteries is different, and particularly for some batteries needing a plurality of batteries for grouping, the grouping service life of the batteries is shortened.
The utility model discloses an authorization notice number is CN 211957824U's utility model discloses a battery vacuolation becomes device, including changing into groove and acidification kettle, change into the groove and be equipped with and be used for changing into the sealed lid that the inslot cavity is sealed, the acidification kettle have the acidification pipe, acidification pipe department is equipped with piston valve, battery vacuolation becomes device still including being used for to changing into the groove inner chamber and carrying out the evacuation, thereby make the evacuation device that piston valve opened on the acidification kettle. By adopting the device, the acid adding kettles installed on the batteries are still subjected to acid injection one by one, and then the acid is subjected to vacuum acid injection, so that the temperature of acid liquor in the acid adding kettles injected one by one is inconsistent, and the pickling and salinization of the batteries are inconsistent, thereby influencing the formation.
The invention with publication number CN112271347A discloses a vacuum formation process of a lead-acid storage battery, which comprises the following steps: s1: injecting a certain amount of electrolyte into the battery, and preliminarily packaging the battery after liquid injection; s2: positioning and fixing the battery on a fixing clamp of a formation line; s3: connecting a vacuum pumping system to an acid adding hole of the storage battery, and pumping out gas in the battery to form negative pressure in the battery; s4: discharging air in the formation line to make the inside and the outside of the battery in a negative pressure state;
s5: electrifying the battery to form a battery; s6: after the formation of the battery is finished, dry air and/or inert gas is filled into the formation line, and the internal pressure of the battery and the formation line are recovered to normal pressure; s7: and after the battery formation is finished, taking out the battery after the temperature of the battery is reduced, checking, sealing the preset pipeline, and storing in a warehouse.
The prior art mentioned above mentions vacuum formation, however, the simultaneous acidification of multiple batteries cannot be solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the integrated device and the method for acid adding and vacuum formation of the storage battery, which effectively improve the consistency of the battery, greatly shorten the formation time of the battery, improve the formation efficiency and improve the comprehensive performance of the battery.
An acid adding and vacuum integrated device for a storage battery comprises:
the vacuum formation box is provided with a negative pressure system for vacuumizing the inner cavity of the vacuum formation box during formation, and at least one side of the vacuum formation box is provided with an openable and closable sealing door;
the system comprises a formation tank, a vacuum formation tank and a control system, wherein the formation tank is used for placing a storage battery to be subjected to acidification and formation, an acidification kettle is inserted into the storage battery placed in the formation tank, and the formation tank can enter and exit the vacuum formation tank through one side of the vacuum formation tank, which is provided with a sealing door;
the quantitative acid adding system comprises a plurality of acid adding pipes which extend into the vacuum formation box and are used for synchronously and quantitatively adding acid to all storage batteries.
The quantitative acid adding system further comprises:
the acid overflow groove is arranged above the vacuum forming box;
the quantitative cups comprise a plurality of quantitative cups arranged in the acid overflow groove, the bottom of each quantitative cup is connected with an acid adding pipe, and the acid adding pipe is provided with a control valve;
the acid storage barrel is used for storing acid liquor;
the acid inlet pipe is connected with the acid storage barrel and is used for filling acid liquor into each quantitative cup;
and the acid return pipe is connected with the acid overflow groove and the acid storage barrel and is used for returning the acid liquid overflowing into the acid overflow groove in the quantifying cup to the acid storage barrel.
The acid outlet end of the acid inlet pipe is connected with a plurality of acid inlet branch pipes, and each acid inlet branch pipe corresponds to one quantifying cup.
The bottom of the formation groove is provided with a roller, the vacuum formation box is internally provided with a placing table board for placing the formation groove, and the placing table board can be provided with a cavity for collecting condensed water conveniently.
The formation tank is internally provided with a first positioning mechanism for positioning each storage battery, and the vacuumization tank is internally provided with a second positioning mechanism for positioning the formation tank.
The formation tank is provided with a first water inlet pipe and a first water outlet pipe, a second water inlet pipe and a second water outlet pipe which penetrate through the side wall of the vacuum formation tank are arranged at the corresponding positions of the vacuum formation tank,
and after the formation tank is conveyed into the vacuum formation tank, connecting pipes are respectively connected with the first water inlet pipe and the second water inlet pipe, and the first water outlet pipe and the second water outlet pipe.
The inner side wall of the formation tank is provided with a water level lower limit switch for controlling the lower limit of the water level in the formation tank and a water level upper limit switch for controlling the upper limit of the water level in the formation tank.
And a temperature sensor for detecting the water temperature in the formation tank is arranged on the inner side wall of the formation tank.
A storage battery acidification and vacuum formation method uses the storage battery acidification and vacuum formation integrated device, and comprises the following steps:
(1) inserting an acid adding kettle into a storage battery to be added with acid and formed, placing the storage battery into a forming groove, and connecting the storage battery into a charging and discharging wire;
(2) conveying the formation tank into a vacuum formation box and closing a sealing door of the vacuum formation box;
(3) synchronously and quantitatively adding acid to all storage batteries by using a quantitative acid adding system;
(4) and after the acid is added, the vacuum formation box is vacuumized to form the product.
The negative pressure setting range is-65 to-100 kPa. Preferably, the negative pressure is set within a range of-85 to-90 kPa.
The current density of the formation process is 5-20mA/cm2And the charging quantity is 6.0-7.5C ampere hours. By adopting the system and the method, the formation time is generally 12-24 hours, and the current production mode basically needs 2-3 days.
The storage battery acid adding and vacuum forming integrated device realizes synchronous acid adding, synchronous standing and synchronous power supply of batteries of the same circuit and the same charger through integration of the acid adding and forming system, ensures the temperature and the volume of acid liquor to be consistent, ensures that the substance conversion of the pole plates is synchronous in the battery forming process, effectively improves the consistency of the batteries, can greatly shorten the battery forming time, improves the forming efficiency, can improve the comprehensive performance of the batteries, and particularly improves the low temperature and the cycle life through formation in a temperature-controllable negative pressure environment.
Drawings
FIG. 1 is a schematic structural diagram of an acid adding and vacuum forming integrated device for a storage battery of the invention.
Fig. 2 is a schematic structural diagram of the storage battery acid-adding and vacuum-forming integrated device after an acid-adding pipeline is removed.
FIG. 3 is a schematic view of the internal structure of the integrated device for acid adding and vacuum formation of the storage battery of the present invention.
FIG. 4 is a schematic view of a cooling water circulation system of the integrated device for acid adding and vacuum formation of the storage battery of the present invention.
FIG. 5 is a schematic sectional view of the chemical bath.
FIG. 6 is a top view of a chemical bath.
Detailed Description
As shown in FIGS. 1 to 6, an acid adding and vacuum formation integrated device for a storage battery comprises a vacuum formation tank 1, a formation tank 2 and a quantitative acid adding system 3.
The vacuum forming box 1 is a box body structure with an inner cavity, and generally, the storage batteries 4 are arranged in a row in the forming groove 2 during forming, so the vacuum forming box 1 is also in a long strip shape, and the specific appearance structure can be arranged as required. At least one side of the vacuumized tank 1 is provided with an openable and closable seal door (the seal door is not shown in the figure), and the seal door is opened when the chemical tank 2 enters and exits the vacuumized tank. The specific structure of the sealing door can use the conventional structure in the prior art, such as one side is hinged with the vacuumized box 1, and the other side is provided with a locking structure. At the bottom in the vacuum formation case, under the sealing performance prerequisite that does not destroy vacuum system, can cause the volume of comdenstion water to set up the stock solution space according to the liquid loss volume of battery formation in-process to set up equipment and discharge the switch, regularly discharge and handle.
The vacuumization box 1 is also provided with a negative pressure system 11 for vacuumizing the inner cavity of the vacuumization box 1 during the vacuumization. In fig. 3, the negative pressure system 11 has two valves, one of which is externally connected with a negative pressure pumping system, such as a negative pressure fan, or connected with a negative pressure system of the whole workshop, and the other is used for opening and releasing the negative pressure inside the vacuumized forming box 1 after the vacuumization is finished.
The interior of the vacuumization tank 1 is provided with a placing table 12 for placing the vacuumization tank 2. The formation tank 2 is used for placing a storage battery 4 to be added with acid and formed, an acid adding pot 5 is inserted into the storage battery 4 placed in the formation tank 2, and the formation tank 2 can be vacuumized into the box 1 and is provided with a sealing door, and one side of the sealing door enters and exits the vacuumized box 1. In order to facilitate the movement of the chemical tank 2, a roller 21 is provided at the bottom of the chemical tank 2.
The formation groove 2 is internally provided with a first positioning mechanism 22 for positioning each storage battery 4, the first positioning mechanism 22 is used for determining the position of the storage battery 4, and the first positioning mechanism 22 can be a positioning groove matched with the appearance of the storage battery 4 arranged on the bottom surface of the formation groove 2 or other feasible structures as long as the function of positioning the storage battery 4 is realized. The vacuumization tank 1 has a second positioning mechanism 13 for positioning the vacuumization tank 2 therein. The second positioning mechanism 13 is used to determine the specific position of the formation tank 2 after being placed in the vacuumized formation tank 1, and may specifically be provided with an infrared sensing probe to detect whether the formation tank 2 reaches a predetermined position, or may also be provided with a mechanical positioning structure, such as a stop lever, which may be a fixed structure or a retractable structure, and extends out for positioning when the formation tank 2 is placed in the vacuumized formation tank 1, and retracts the stop lever when the formation tank 2 is taken out.
Of course, after the storage battery 4 is put into the formation tank 2, the storage battery 4 needs to be connected with wires (not shown in the figure) for charging and discharging during formation, the storage battery formation machine power line and the signal wire are preset in the vacuumization formation box 1, before the formation tank 2 is put into the vacuumization formation box 1, the wires between each battery of the storage battery 4 are connected, then the positive and negative lead-out wires are connected with the positive and negative stages of the storage battery formation machine power line, the positive and negative wires and the signal wire of the charge and discharge machine power line can also be taken out of the vacuumization formation box 1 and connected, and then the formation tank 2 is put into the vacuumization formation box 1. Of course, the storage battery formation machine used in formation charging and discharging is placed outside the vacuum formation box 1, and only the wire needs to be connected into the vacuum formation box 1, and the storage battery formation machine can be implemented by adopting an aviation plug mode or a pre-embedded mode and the like, but all the storage battery formation machine needs to be subjected to sealing treatment.
The formation tank 2 is provided with a first water inlet pipe 23 and a first water outlet pipe 24, a second water inlet pipe 14 and a second water outlet pipe 15 penetrating through the side wall of the vacuum formation tank 1 are arranged at corresponding positions of the vacuum formation tank 1, wherein the correspondence means that after the formation tank 2 is placed at a set position in the vacuum formation tank 1, the first water inlet pipe 23 is positioned near the second water inlet pipe 14, and the first water outlet pipe 24 is positioned near the second water outlet pipe 15. After the formation tank 2 is sent into the vacuum formation tank 1, the first water inlet pipe 23 and the second water inlet pipe 14, and the first water outlet pipe 24 and the second water outlet pipe 15 are respectively connected by using connecting pipes. In order to facilitate the connection of the connecting pipes, the first water inlet pipe 23, the first water outlet pipe 24, the second water inlet pipe 14 and the second water outlet pipe 15 can be arranged at one end close to the sealing door. Of course, the vacuumized forming box 1 may be provided with openings at both ends and with sealing doors, and then the water outlet pipe and the water inlet pipe may be separately provided at both ends.
This application battery acidification, vacuum one-piece type device still include cooling water circulation system 6, as shown in fig. 4, cooling water circulation system 6 includes refrigeration plant 64, cold water bucket 65, warm water bucket 63, and refrigeration plant 64 is connected with cold water bucket 65 and warm water bucket 63 through the pipeline respectively, and warm water bucket 63 rethread pipeline 61 is connected with second outlet pipe 15, and cold water bucket 65 passes through pipeline 66 and is connected with second inlet tube 14. A water pump 62 is provided on the pipe 61. A water inlet control valve 16 is arranged on the second water inlet pipe 14, and a water outlet control valve 17 is arranged on the second water outlet pipe 15. The warm water in the formation tank 2 enters a warm water barrel 63 for temporary storage through the first water outlet pipe 24 via the second water outlet pipe 15 and the pipeline 61, then enters a refrigeration device 64 for refrigeration and then enters a cold water barrel 65 for temporary storage, and then the cooled water enters the formation tank 2 via the pipeline 66, the second water inlet pipe 14 and the first water inlet pipe 23.
The inner side wall of the chemical tank 2 is provided with a lower water level limit switch 25 for controlling the lower water level limit in the chemical tank 2 and an upper water level limit switch 26 for controlling the upper water level limit in the chemical tank 2. The inner side wall of the chemical tank 2 can be also provided with a temperature sensor 27 for detecting the water temperature in the chemical tank 2. The lower and upper level limit switches 25 and 26 detect the water level and then control the operation of the cooling water circulation system 6 to ensure that the water level is within a desired height range. The temperature sensor 27 detects the temperature of the water in the formation tank 2, and then the operation of the cooling water circulation system 6 can be controlled to ensure that the temperature of the water is within a set range. The storage battery acidification and vacuum formation integrated device can be provided with a control system to automatically control the operation of the cooling water circulation system 6.
The quantitative acid adding system 3 comprises a plurality of acid adding pipes 31 which extend into the vacuum formation box 1 and are used for synchronously and quantitatively adding acid to all the storage batteries 4. The top surface of the vacuum formation box 1 is provided with an acid overflow groove 33, a plurality of quantitative cups 34 are arranged in the acid overflow groove 33, the bottom of each quantitative cup 34 is connected with an acid adding pipe 31, and the acid adding pipe 31 is provided with a control valve 32. For a general accumulator 4, if there are 6 cells in each accumulator 4, 6 acid adding pipes 31 and 6 quantitative cups 34 are required to be provided for each accumulator 4.
The quantitative acid adding system 3 further comprises an acid storage barrel 35 for storing acid liquor, and an acid inlet pipe 36 and an acid return pipe 38 which are connected with the acid storage barrel 35. The acid outlet end of the acid inlet pipe 36 is connected with a plurality of acid inlet branch pipes 37, each acid inlet branch pipe 37 corresponds to one quantifying cup 34, and the acid inlet pipe 36 is also provided with an acid adding pump 39. The acid solution is filled in the quantitative cup 34 through the acid inlet pipe 36, the acid overflowing from the quantitative cup 34 flows into the acid overflow groove 33, and then is returned into the acid storage barrel 35 through the acid return pipe 38 connecting the acid overflow groove 33 and the acid storage barrel 35.
The acid adding and vacuum formation of the storage battery is carried out by using the integrated device for acid adding and vacuum formation of the storage battery, and the specific method comprises the following steps:
(1) the storage battery 4 to be acidified and formed is inserted into the formation tank 2 after being inserted into the acidification kettle 5 and is connected into a charging and discharging wire;
(2) the chemical conversion tank 2 is sent into the vacuum chemical conversion box 1, and a sealing door of the vacuum chemical conversion box 1 is closed;
(3) synchronously and quantitatively adding acid to all storage batteries 4 by using a quantitative acid adding system 3;
(4) and after the acid is added, the vacuum formation box 1 is vacuumized to form the product.
The negative pressure setting range is-65 to-100 kPa, and the negative pressure setting range is preferably-85 to-90 kPa. The "-" in the negative pressure value indicates that the internal pressure is lower than the external ambient pressure, for example, -85kPa indicates that the internal pressure is lower than the external ambient pressure by 85 kPa. Formation process electricityThe flow density is 5-20mA/cm2And the charging quantity is 6.0-7.5C ampere hours. By adopting the system and the method, the formation time is generally 12-24 hours, and the current production mode basically needs 2-3 days.
After the storage batteries 4 are sequentially placed in the formation grooves 2, the wires for formation charging and discharging are connected, then the formation grooves 2 are integrally slid into the vacuumization formation box 1, the formation grooves 2 are positioned through the second positioning mechanism 13, and the formation grooves 2 are ensured to be positioned at the set positions. The acid adding pipe 31 at each fixed position can be ensured to correspond to each storage battery 4 by positioning the storage battery 4 with respect to the chemical conversion tank 2 and positioning the chemical conversion tank 2 with respect to the vacuum chemical conversion tank 1. The cooling water circulation system 6 is connected by connecting pipes to the first and second water inlet pipes 23 and 14, and the first and second water outlet pipes 24 and 15, respectively. Closing a sealing door of the vacuumized formation tank 1 for sealing, then feeding cooling water into the formation tank 2, pumping negative pressure (negative pressure setting range is-85 to-90 kPa) into the vacuumized formation tank 1, stopping pumping the negative pressure when the negative pressure value reaches-90 kPa, simultaneously opening the water inlet control valve 16, starting water inlet, starting pumping the negative pressure when the negative pressure value reaches-85 kPa during the water inlet process, closing the water inlet control valve 16 when the water level reaches the upper water level limit switch 26, and stopping pumping the negative pressure for preparing acid addition when the negative pressure value reaches-90 kPa; during acid adding, the quantitative cup 34 is filled with acid liquor, then the control valve 32 is opened to start acid adding, the control valve 32 is closed after 2-5 seconds of delay, and the acid liquor is rapidly injected into the storage batteries 4 in the negative pressure environment, so that synchronous quantitative acid adding of the storage batteries can be completed. And in the acid feeding delay process, negative pressure is released, when the negative pressure value is lower than-85 kPa, negative pressure pumping is started, and when the negative pressure value reaches-90 kPa, negative pressure pumping is stopped. Then, the charging formation is started, and the formation process can be started for charging after the acid addition is finished. The water temperature is controlled in the formation process, the temperature sensor 27 measures the water temperature in real time, when the water temperature reaches an upper limit set value, a valve of the negative pressure system 11 for releasing pressure is opened and is closed after time delay of 10-60 s (at the moment, the interior of the water tank is recovered to the normal pressure), the water outlet control valve 17 is opened and the water pump 62 is started to pump the warm water in the formation tank 2 to the warm water barrel 63, when the water level of the formation tank 2 touches the water level lower limit switch 25, the water outlet control valve 17 and the water pump 62 are closed, the negative pressure pumping is simultaneously started and the cooling water is fed, and the cold water in the cold water barrel 65 is reversely sucked by the negative pressure pumping in the vacuum formation tank 1. In the water circulation process, the circulation stirring of the acid liquor of the battery is facilitated, when the negative pressure is released, the acid liquor jacked up by the bubbles sinks along with the release of the negative pressure, the concentration polarization of the acid liquor is intermittently removed, and the formation of the battery is facilitated.
During the formation process, when the formation voltage rises to the value of electrolyzed water, hydrogen is generated, a hydrogen concentration detector is arranged in a vacuum system or outside the vacuum formation box 1, and when the hydrogen concentration is too high, negative pressure release is also necessary for ventilation.
The cylinder of the vacuum forming tank 1 can be made of a corrosion-resistant material, preferably a transparent corrosion-resistant material, so that the internal conditions can be observed in real time.
When the acid is quantitatively added, the required acid amount can be added at one time, and the acid addition can be carried out for 2-4 times in stages. Because the negative pressure formation is adopted, the formation process has two dehydration aspects, firstly, when the temperature of the acid liquid (electrolyte) reaches the evaporation boiling point with a set negative pressure value, the evaporation dehydration is generated, which is one of the most important principles of the vacuum formation, and the heat in the battery can be rapidly taken out by utilizing the principle; secondly, when the voltage of the battery reaches the water decomposition value, water is lost. Therefore, the vacuum formation can realize low specific gravity formation, and the current density formation can be increased to realize rapid formation. The acid amount of the one-time acid adding is about 2 times more than that of the conventional acid adding, and a large-volume acid adding kettle 5 and a large-space vacuum forming box 1 are required to be designed for meeting the requirement. If the acid adding mode is divided into a plurality of times, the acid adding kettle 5 in the original mode can be adopted, and the vacuum forming box 1 can be reduced. By adopting the acidification forming system, a repeated acidification mode can be conveniently realized.
Claims (10)
1. The utility model provides a battery acidification, vacuation formula one-piece device which characterized in that includes:
the vacuum formation box is provided with a negative pressure system for vacuumizing the inner cavity of the vacuum formation box during formation, and at least one side of the vacuum formation box is provided with an openable and closable sealing door;
the system comprises a formation tank, a vacuum formation tank and a control system, wherein the formation tank is used for placing a storage battery to be subjected to acidification and formation, an acidification kettle is inserted into the storage battery placed in the formation tank, and the formation tank can enter and exit the vacuum formation tank through one side of the vacuum formation tank, which is provided with a sealing door;
the quantitative acid adding system comprises a plurality of acid adding pipes which extend into the vacuum formation box and are used for synchronously and quantitatively adding acid to all storage batteries.
2. The battery acid adding and vacuuming integrated device according to claim 1, wherein the quantitative acid adding system further comprises:
the acid overflow groove is arranged above the vacuum forming box;
the quantitative cups comprise a plurality of quantitative cups arranged in the acid overflow groove, the bottom of each quantitative cup is connected with an acid adding pipe, and the acid adding pipe is provided with a control valve;
the acid storage barrel is used for storing acid liquor;
the acid inlet pipe is connected with the acid storage barrel and is used for filling acid liquor into each quantitative cup;
and the acid return pipe is connected with the acid overflow groove and the acid storage barrel and is used for returning the acid liquid overflowing into the acid overflow groove in the quantifying cup to the acid storage barrel.
3. The acid adding and vacuum integrated device for the storage battery as claimed in claim 2, wherein an acid outlet end of the acid inlet pipe is connected with a plurality of acid inlet branch pipes, and each acid inlet branch pipe corresponds to one quantitative cup.
4. The acid adding and vacuum forming integrated device for the storage battery as claimed in claim 1, wherein rollers are arranged at the bottom of the forming tank, and a placing table for placing the forming tank is arranged in the vacuum forming tank.
5. The integrated acid adding and vacuum forming device for the storage batteries according to claim 1, wherein the forming tank is provided with a first positioning mechanism for positioning each storage battery, and the vacuum forming box is provided with a second positioning mechanism for positioning the forming tank.
6. The acid adding and vacuum forming integrated device for the storage battery as claimed in claim 5, wherein the forming tank is provided with a first water inlet pipe and a first water outlet pipe, a second water inlet pipe and a second water outlet pipe penetrating through the side wall of the vacuum forming tank are arranged at corresponding positions of the vacuum forming tank,
and after the formation tank is conveyed into the vacuum formation tank, connecting pipes are respectively connected with the first water inlet pipe and the second water inlet pipe, and the first water outlet pipe and the second water outlet pipe.
7. The acid adding and vacuum forming integrated device for the storage battery as claimed in claim 6, wherein the inner side wall of the forming tank is provided with a lower water level limit switch for controlling the lower water level limit in the forming tank and an upper water level limit switch for controlling the upper water level limit in the forming tank.
8. The acid adding and vacuum forming integrated device for the storage battery as claimed in claim 6, wherein a temperature sensor for detecting the temperature of water in the forming tank is arranged on the inner side wall of the forming tank.
9. An acid adding and vacuum forming method for a storage battery is characterized in that the acid adding and vacuum forming integrated device for the storage battery as claimed in any one of claims 1 to 8 is used, and comprises the following steps:
(1) inserting an acid adding kettle into a storage battery to be added with acid and formed, placing the storage battery into a forming groove, and connecting the storage battery into a charging and discharging wire;
(2) conveying the formation tank into a vacuum formation box and closing a sealing door of the vacuum formation box;
(3) synchronously and quantitatively adding acid to all storage batteries by using a quantitative acid adding system;
(4) and after the acid is added, the vacuum formation box is vacuumized to form the product.
10. The acid-adding and vacuum-forming method for storage batteries according to claim 9, characterized in that the negative pressure is set within a range of-85 to-90 kPa.
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