CN115548497A - Water removal method for battery device and water removal device for battery device - Google Patents
Water removal method for battery device and water removal device for battery device Download PDFInfo
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- CN115548497A CN115548497A CN202210025226.1A CN202210025226A CN115548497A CN 115548497 A CN115548497 A CN 115548497A CN 202210025226 A CN202210025226 A CN 202210025226A CN 115548497 A CN115548497 A CN 115548497A
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
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- 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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- 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
Abstract
The invention relates to a dewatering method of a battery device and a dewatering device of the battery device, wherein the dewatering method of the battery device comprises the following steps: selecting a soft metal packaging battery device with at least one unsealed end, moving the battery device into an airtight cavity, applying preset temperature and pressure to the upper end face and the lower end face of the battery device in the airtight cavity, removing water in the battery by a method of heating and applying pressure at the same time, and finally sealing the unsealed side of the soft metal of the battery device, so that the effect of quickly removing the water in the battery device is achieved; the invention also includes a method for removing the released water and supplementing the dry gas by negative pressure air extraction to improve the water removal efficiency; and a plurality of groups of continuous hot pressing methods are used for sequentially reducing the water in the battery device, so that the water in the battery device can be continuously and quickly removed, the dryness in the battery device is uniform, and the effect of uniform quality is achieved.
Description
Technical Field
The present invention relates to a method for removing water from a battery device and a novel design of a water removing device for a battery device, which can continuously and rapidly remove water from the battery device, and has the advantages of uniform dryness of the interior of the battery device and uniform quality.
Background
Due to the vigorous development of the 3C product market, various high performance devices applied to various products have been developed in addition to the light, thin, short, and small targets. In order to increase the battery usage time and increase the energy density of the battery, the primary battery that cannot be reused previously cannot meet the requirements of the electronic information products, and most of the batteries currently used in the electronic information products use a rechargeable battery system that can be charged and discharged repeatedly as the main stream. Such as: lithium batteries, fuel cells, solar cells 8230, and the like. However, the conventional lithium ion secondary battery mainly uses a liquid electrolyte as a lithium ion transmission medium, but the volatile property of the liquid electrolyte can cause adverse effects on human bodies and the environment; meanwhile, the flammability of liquid electrolytes is also a great safety concern for battery users. Furthermore, one of the reasons for the unstable performance of the current lithium battery is mainly that the electrode has a large surface activity (negative electrode) and a high voltage (positive electrode), and the direct contact between the electrode and the electrolyte causes the interface between the electrode and the electrolyte to be unstable, so that a so-called exothermic reaction is generated to form a passive protective film on the contact interface, and the reactions consume the liquid electrolyte and the lithium ions and generate heat. Once local short circuit occurs, the local temperature rapidly rises, and at the moment, the passive protective film becomes unstable and releases heat; this exothermic reaction is cumulative, and the temperature of the entire battery continues to rise. Once the temperature of the battery is increased to the initial temperature (or trigger temperature) of the thermal runaway reaction (thermal runaway), a thermal runaway phenomenon is caused, which may cause damage to the battery, such as explosion or fire, and cause considerable safety concerns in use (taiwan patent No. I676316). In recent years, solid electrolytes have become a focus of research, having ionic conductivity similar to that of liquid electrolytes, but lacking the properties of liquid electrolytes that are prone to evaporation and combustion, while having a relatively stable interface with the active material surface (whether chemical or electrochemical).
Taiwan patent publication No. I655304, "manufacture of high capacity solid state battery" discloses a method for manufacturing a thin film solid state battery device using a closed loop process to create multiple stacks to obtain high capacity of more than 0.1mAh, wherein the method comprises a processing step on a thin substrate (0.1 μm to 100 μm), the closed loop process comprising the steps of: performing a plurality of processes to create a single stack by sequentially depositing a plurality of materials taken from deposition sources to form a resulting electrochemical cell on the substrate, the plurality of processes comprising at least one of: depositing a first current collector on the substrate; depositing a first electrode layer capable of undergoing an electrochemical reaction with ions on the current collector; depositing a solid electrolyte material on the first electrode layer; depositing a second electrode layer on the solid electrolyte material; depositing a second current collector on the second electrode layer; moving the substrate, and then forming a second electrochemical cell on the substrate over the resulting stack of electrochemical cells; and repeating the cell stack deposition sequence until a multi-stack cell having a high capacitance of equal to or greater than 0.1mAh is formed on the substrate, wherein the substrate further comprises a release material selected from at least one of: fluoropolymers, monomers, oligomers, conductive materials, or combinations thereof, bifunctional release layers, desiccants, depolymerization layers, thermal release materials, polyimides, polydimethylsiloxane (PDMS), semi-organo molecular siloxanes, hydrophobic layers, epitaxial release materials, amorphous fluoropolymers, radiation release materials (2019, 04/01, charpy bulletin reference). Taiwan patent publication No. I646713 "manufacturing of solid state battery" discloses a method for manufacturing a solid state battery, comprising the steps of: providing a positive electrode material blank sheet; providing a blank sheet of a separator material; laminating the green sheet of positive electrode material and the green sheet of separator material together to form a stack of green sheets; sintering the laminate green sheet stack to form a sintered stack, the sintered stack comprising a positive electrode and a separator; and laminating a negative electrode on the sintered stack (see patent publication data on year 2019, 01). Taiwan patent publication No. I624976, "manufacturing method of solid state battery", discloses a manufacturing method of a solid state battery, comprising the steps of: a. providing a battery unit, wherein the battery unit comprises a positive plate, a solid electrolyte layer and a negative plate which are sequentially stacked, and the positive plate comprises a first current collecting layer and positive material layers respectively combined on two side surfaces of the first current collecting layer; b. positioning the battery unit on a bearing plate in a pressure chamber, wherein the pressure chamber is provided with a fluid medium; and c, providing the medium temperature control of 20 to 200 ℃ and the medium pressure control of 5 to 100000PSI to soften and joint the joint surfaces of the positive plate, the solid electrolyte layer and the negative plate (the patent publication data of 21/05/2018).
In the conventional battery package structure, no matter the primary battery system or the secondary battery system, most of the conventional battery packages are in the form of a hard metal case (including conventional cylindrical and square cases), for example: the 18650 type lithium battery (cylindrical lithium battery) widely used in notebook computers or 383562 type lithium battery (square lithium battery) widely used in portable communication devices at present all use a hard metal case as a packaging material, and such a packaging method can not only prevent a battery core from being damaged by external stress, but also reduce the influence of external factors (such as moisture, oxygen, 8230and the like) on a chemical system in the battery. Therefore, although the secondary lithium battery can provide better electrical performance and service life for the terminal electronic products, most of the electronic products are greatly limited in circuit design due to its fixed size design and hard housing material. Therefore, a secondary battery device has developed a structure of a soft metal package (e.g., aluminum foil) to replace the conventional hard metal casing, so that the difficulty of applying the secondary battery system to electronic products can be reduced. In particular, the solid-state battery device stacked in a sheet form has an advantage of greatly reducing the volume of the battery device as compared with a cylindrical battery device. As such, such batteries may be used in a variety of applications, such as portable electronic devices (cell phones, personal digital assistants, music players, video recorders, and the like), power tools, power sources for military use (communications, lighting, imaging, and the like), power sources for aerospace applications (power for satellites), and power sources for vehicular applications (hybrid electric vehicles, plug-in hybrid electric vehicles, and all-electric vehicles).
However, the above-mentioned stacked solid-state battery device packaged with a soft metal (e.g., aluminum foil) has to have a water content of less than 200ppm due to the internal sheet-like battery device, which may cause defects such as damage to the battery device and reduction in the life of the battery device after packaging. In the prior art, when the battery device is packaged by soft metal, one side of the battery device is left unsealed, and then the battery device is placed into an oven to be baked and dried. Furthermore, because the interior of the battery device is of a stacked structure, the drying is more difficult as the battery device is stacked in multiple layers, the battery device is more likely to be deformed and damaged except for a long time, and the drying degree in the interior is uneven, so that the requirement of consistent quality cannot be met. Furthermore, the battery device is placed inside the oven for drying in the prior art, the moisture inside the battery device can only be slowly evaporated by the temperature due to the release of the moisture inside the battery device without pressure, and the evaporated moisture is not easily discharged from the inside, so the drying process takes a long time, and the moisture content inside the battery device is not uniform due to uneven heating temperature in the prior art, which results in poor quality. The lack of the conventional drying and dewatering technology for battery devices is a difficult problem to overcome in the industry.
Disclosure of Invention
In view of the deficiency of the conventional technology, the inventor of the invention accumulates the design and manufacture professional knowledge of scientific and technical industrial products such as precision ceramics, biotechnology and environmental protection and the like which are actually engaged in for many years, and finally has the research and development success of the invention after continuous research and improvement, which is publicized in the world.
Accordingly, the present invention is directed to a method for removing water from a battery device, the method comprising: the method comprises the steps of selecting a soft metal packaging battery device with at least one unsealed end, moving the battery device into an airtight cavity, applying preset temperature and pressure to the upper end face and the lower end face of the battery device in the airtight cavity, removing water in the battery by a method of heating and applying pressure, and finally sealing the unsealed side of the soft metal of the battery device, so that the effect of quickly removing the water in the battery device is achieved.
The present invention also includes a method for removing the released water and supplementing the dry gas by negative pressure air extraction to improve the water removal efficiency.
The present invention also includes a method for evacuating the airtight chamber to remove the released water, and the water removal efficiency is improved by using a vacuum environment.
The invention also comprises a method of hot-pressing matching displacement for a preset number of times and multi-group continuous hot pressing, which reduces the water in the battery device in sequence, can achieve the effects of continuously and rapidly removing the water in the battery device, and has uniform dryness in the battery device, thereby achieving uniform quality.
The present invention also provides a dewatering device for a battery device, which comprises an airtight chamber, a support plate disposed in the airtight chamber for placing the battery device, an upper hot pressing device disposed above the support plate, and a lower hot pressing plate disposed below the support plate, wherein the upper hot pressing device comprises a lifting system and an upper hot pressing plate disposed below the lifting system, the upper hot pressing plate and the lower hot pressing plate have heating elements for heating the upper hot pressing plate and the lower hot pressing plate to a predetermined temperature, the dewatering device further comprises a soft metal packaged battery device with at least one unsealed end, the battery device is disposed on the support plate in the airtight chamber, the lifting system is actuated to lower the upper hot pressing plate, and the lower hot pressing plate applies a predetermined temperature and pressure to the upper and lower end surfaces of the battery device in the airtight chamber, so as to remove moisture in the battery device by heating and pressing, thereby rapidly removing moisture in the battery device.
The invention also includes a negative pressure system and a source gas inlet system, the negative pressure system includes a negative pressure buffer tank connected with a negative pressure pipe communicated with the airtight cavity, the source gas inlet system includes a drying and dewatering device for drying the source gas, the drying and dewatering device is connected with an inlet flow-dividing pipe arranged at the lower part of the airtight cavity, the negative pressure system is used for removing the water released from the battery device by negative pressure and supplementing the dry gas by the source gas inlet system, thereby improving dewatering efficiency.
In the negative pressure system of the present invention, the negative pressure piping connected to the negative pressure system is provided with a negative pressure gas collecting hood inside the airtight cavity and above the battery device to be hot-pressed, so as to improve the efficiency of negative pressure moisture removal.
The source gas inlet system of the present invention is further provided with an inlet flow adjusting device for adjusting the flow rate of the inlet gas.
The source gas inlet system is also provided with a moisture sampling device which is arranged in the airtight cavity to analyze the moisture content in the airtight cavity and adjust the flow of inlet gas and negative pressure so as to achieve the best effect.
The invention also includes a closed furnace body, two ends of the outside of the furnace body are provided with exchange systems, the exchange systems are connected with other conveying channels, the airtight cavity is arranged in the furnace body, an inner conveying channel is arranged in the airtight cavity, the inner conveying channel is connected with the two-end exchange systems of the furnace body and is used as a track for moving the carrier plate, the carrier plates which are sequentially and continuously pushed by the exchange systems are arranged above the inner conveying channel, each carrier plate is provided with a battery device to be subjected to hot pressing for dewatering, a predetermined number of upper hot pressing devices are arranged in the airtight cavity, the carrier plates are oppositely arranged below the upper hot pressing devices, the lower hot pressing plates are oppositely arranged below the carrier plates, the lower hot pressing plates are arranged on the inner conveying channel, the upper hot pressing devices can set the hot pressing time and pressure, the upper hot pressing plates and the lower hot pressing plates can set the predetermined temperature for a predetermined number of times, the hot pressing is carried out for a predetermined number of times, the displacement of the carrier plates is matched, and the moisture in the battery device to be dewatered is sequentially reduced in a plurality of groups in a continuous hot pressing way, the moisture in the battery device can be continuously and quickly removed, and the moisture in the battery device can be uniformly dried.
The invention also includes a soft metal sealing device which is arranged at the tail end of the airtight cavity and comprises an upper sealing device and a lower sealing device, so that the unsealed end of the battery device after water removal is sealed in a hot pressing mode.
The invention also provides a dewatering device of a battery device, which mainly comprises a vacuum airtight cavity, wherein a conveying rail is arranged in the vacuum airtight cavity and used for placing a bearing plate, the bearing plate is used for placing at least 1 group of hot-pressing layer frames, each hot-pressing layer frame consists of a preset number of heating plates and a connecting mechanism, each heating plate is provided with a heating element for heating each heating plate to a preset temperature, each heating plate is used for placing the battery device, each connecting mechanism comprises a connecting sheet for connecting each adjacent heating plate, one end of each connecting sheet is fixed at the preset position of the heating plate below the adjacent connecting sheet, the other end of each connecting sheet extends out of the heating plate above the adjacent heating plate and is provided with a chute as the space for pressing each heating plate, the heating plate above the adjacent connecting sheet is provided with a pin piece relative to the chute of the connecting sheet, the pin piece is positioned at the lower end of the chute in a normal state to connect and support each heating plate above and is connected with another connecting sheet above the other in series, and thus the preset number of the hot-pressing layer frames are formed; the hot pressing device is arranged above the hot pressing layer frame, the hot pressing device consists of a lifting system and a pressing plate arranged below the lifting system, and the hot pressing device also comprises a soft metal packaging battery device with at least one unsealed end, the battery device is arranged between the heating plates of the hot pressing layer frame, the lifting system is used for actuating to descend to press the pressing plate, and further, in the vacuum airtight cavity, the heating plates of the hot pressing layer frame apply preset temperature and pressure to the upper end face and the lower end face of the battery device arranged between the heating plates of the hot pressing layer frame, so that the moisture in the battery device is removed in a heating and pressing mode, and the effect of quickly and efficiently removing the moisture in the battery device is achieved.
The invention also comprises a vacuum system which is connected with a vacuum distribution pipe, the vacuum distribution pipe is communicated with the vacuum airtight cavity, and the vacuum system is used for vacuumizing the vacuum airtight cavity so as to accelerate the removal of the water released in the battery device and improve the water removal efficiency.
The invention also includes a closed furnace body, two ends of the outside of the furnace body are provided with exchange systems, the vacuum airtight cavity is arranged in the furnace body, a conveying track arranged in the vacuum airtight cavity is connected with the exchange systems at two ends of the furnace body and is used as a track for moving the bearing plates, the bearing plates which are sequentially and continuously pushed by the exchange systems are arranged on the conveying track, the hot pressing bearing frames are placed on the bearing plates, battery devices to be hot-pressed and dewatered are arranged among heating plates of the hot pressing bearing frames, the vacuum airtight cavity is provided with a predetermined number of hot pressing devices, the hot pressing bearing frames are oppositely arranged below the hot pressing devices, the hot pressing devices can set the hot pressing time and pressure, the heating plates of the hot pressing bearing frames can set a predetermined temperature so as to perform hot pressing for a predetermined number of times, and the displacement of the bearing plates is matched to sequentially reduce the moisture in the battery devices to be dewatered in a plurality of times in a continuous hot pressing mode, and the dryness in the battery devices is uniform, thereby achieving the effect of uniform quality.
Drawings
FIG. 1 is a front sectional view of a water removing device of a battery device according to the present invention;
FIG. 2 is a top sectional view of a water removing device of the battery device of the present invention;
FIG. 3 is a sectional view of a hot-pressing water removing part of the water removing device of the battery device of the present invention;
FIG. 4 is a sectional view of the upper end of a water removing device of a battery device according to another embodiment of the present invention;
FIG. 5 is a sectional view of a hot-pressing water removing part of a water removing device of a battery device according to another embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of a heat press frame according to an embodiment of the present invention.
In the figure:
a is a battery device; 1, an airtight cavity; 10, a carrier plate; 11, a lower hot pressing plate; 110 heating element; 12, an inner conveying channel; 13, vacuum airtight cavity; 14, conveying a track; 15, carrying a plate; 16, hot-pressing bearing frame; 160, heating plate; 161 a connecting mechanism; 162 connecting sheet; 163 is a chute; 164, a pin; 17: a heating element; 2, installing a hot-pressing device; 20, a lifting system; 21, an upper hot pressing plate; 210 a heating element; 22, a hot-pressing device; 220, a lifting system; 221, a pressure plate; 3, a negative pressure system; 30, a negative pressure buffer tank; 31, a negative pressure pipe; 32, negative pressure gas-collecting hood; 33, a vacuum system; 330, vacuum piping; 4, a source gas inlet system; 40, a drying and dewatering device; 41, an air inlet shunt pipe; 42, an air inlet flow adjusting device; 43, a moisture sampling device; 5, a furnace body; 51, an outer conveying channel; 6, switching system; 60, inner airtight door; an outer airtight door 61; 62, an airtight space; 7, a soft metal sealing device; 70, mounting a sealing device; 71, a lower sealing device; 8, furnace body; 80, a switching system; 81, an inner airtight door; 82, a feed system; 83, a discharge system cylinder; 84, an outer airtight door; 85, vacuum transferring cavity.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
The invention relates to a dewatering method of battery device and a dewatering device of battery device, which aims at the dewatering method and the dewatering device of the stacked solid battery device (hereinafter referred to as battery device) packaged by soft metal (such as aluminum foil).
The invention relates to a water removal method of a battery device, which comprises the following steps: at least one end of the battery device is packaged by soft metal, the battery device is moved into an airtight cavity, preset temperature and pressure are applied to the upper end face and the lower end face of the battery device in the airtight cavity, water in the battery is removed by a method of heating and pressing at the same time, and finally the side of the battery device, which is not sealed, is sealed, so that the effect of quickly removing the water in the battery device is achieved. Compared with the prior art, the invention can release the moisture in the battery from the unsealed part by heating and pressing simultaneously, and has the effect of quickly removing the moisture in the battery device.
The invention also includes a method for exhausting the released water and supplementing the dry gas by negative pressure air exhaust, the released water is exhausted by continuous negative pressure air exhaust, and the dried fresh outside air is supplemented, because the water content in the airtight cavity is reduced, the water removal efficiency can be effectively improved.
The present invention also includes a method for evacuating the airtight chamber to remove the released water, and the water removal efficiency is improved by using a vacuum environment.
The invention also includes the method of hot pressing matching displacement for preset times and multi-group continuous hot pressing to reduce the water in the battery device in sequence, which can not only achieve the continuous and rapid removal of the water in the battery device, but also achieve the effect of uniform dryness in the battery device and uniform quality.
Please refer to fig. 3, which is a sectional view of a hot-pressing water-removing part of the water-removing device of the battery device of the present invention. It can be seen from the figure that the water removing device of the battery device of the present invention mainly comprises an airtight cavity 1, a carrier plate 10 is arranged in the airtight cavity 1 for placing a battery device a, an upper hot pressing device 2 is arranged above the carrier plate 10, a lower hot pressing plate 11 is arranged below the carrier plate 10, the upper hot pressing device 2 is composed of a lifting system 20 and an upper hot pressing plate 21 arranged below the lifting system 20, the upper hot pressing plate 21 and the lower hot pressing plate 11 are provided with heating elements 210, 110 for heating the upper hot pressing plate 21 and the lower hot pressing plate 11 to a predetermined temperature, the present invention further comprises a soft metal packaging battery device a with at least one unsealed end, the battery device a is placed on the carrier plate 10 in the airtight cavity 1, the lifting system 20 is actuated to descend to press the upper hot pressing plate 21 downwards, and the lower hot pressing plate 11 applies a predetermined temperature and pressure to the upper and lower end surfaces of the battery device a in the airtight cavity 1, so as to heat and press the water in the battery device a while sealing the battery device a, and then the soft metal packaging side of the battery device a is sealed to achieve the effect of rapid water removing. Compared with the prior art, the invention can release the moisture in the battery device A from the unsealed part by pressing the water in the battery device A while heating, and has the effect of quickly removing the moisture in the battery device. The invention removes the water in the battery device A in a hot pressing mode, and the water in the battery device A is pressed and released from the position without a sealing port due to the hot pressing, so that the dryness in the battery device A is uniform, and the quality is relatively stable.
Please refer to fig. 1, which is a front sectional view of a water removing device of a battery device according to the present invention, and fig. 2, which is a top sectional view of a water removing device of a battery device according to the present invention. The invention also includes a negative pressure system 3 and a source gas intake system 4, the negative pressure system 3 includes a negative pressure buffer tank 30, the negative pressure buffer tank 30 is connected with a negative pressure piping 31, the negative pressure piping 31 is communicated with the airtight cavity 1, the source gas intake system 4 includes a drying and dewatering device 40, the drying and dewatering device 40 is used for drying the source gas, the drying and dewatering device 40 is connected with an intake shunt pipe 41 arranged at the lower part of the airtight cavity 1, the negative pressure system 3 removes the water released from the battery device A by negative pressure, and the intake system 4 supplements the drying gas.
In the negative pressure system 3 of the present invention, the negative pressure piping 31 connected thereto is provided with a negative pressure gas collecting hood 32 above the battery device a to be hot-pressed in the airtight cavity 1, so as to improve the negative pressure moisture removal efficiency.
Referring to fig. 3, the source gas inlet system 4 of the present invention is further provided with an inlet gas flow adjusting device 42 for adjusting the flow rate of the inlet gas.
Referring to fig. 3, the source gas inlet system 4 of the present invention is further provided with a moisture sampling device 43, and the moisture sampling device 43 is disposed in the airtight chamber 1 for analyzing the moisture content in the airtight chamber 1 to adjust the flow rate of the inlet gas and the negative pressure, so as to achieve the best effect.
The invention also includes a closed furnace body 5, the two ends of the outside of the furnace body 5 are equipped with exchange systems 6, the exchange systems 6 are connected with an external conveying passage 51, the airtight cavity 1 is arranged inside the furnace body 5, the airtight cavity 1 is equipped with an internal conveying passage 12, the internal conveying passage 12 is connected with the two-end exchange systems 6 of the furnace body to be used as a track for moving the carrier plates 10, the carrier plates 10 which are pushed in by the exchange systems 6 sequentially and continuously are arranged above the internal conveying passage 12, each carrier plate 10 is equipped with a battery device A to be subjected to hot pressing and water removal, the airtight cavity 1 is equipped with a predetermined number of upper hot pressing devices 2, the lower hot pressing devices 2 are equipped with the carrier plates 10 relatively and the lower hot pressing plates 11 relatively under each carrier plate 10, the lower hot pressing plates 11 are arranged on the internal conveying passage 12, the upper hot pressing devices 2 can set the time and pressure of hot pressing, the upper and the lower hot pressing plates 21 and the lower hot pressing plates 11 can set a predetermined temperature to be subjected to hot pressing for a predetermined number of times and to be matched with the displacement of the carrier plates 10, the hot pressing and a plurality of the groups of continuous hot pressing devices can reduce the internal water removal of the batteries sequentially and achieve uniform drying effect of the batteries A in a and uniform drying effect.
The invention also comprises a soft metal sealing device 7, wherein the soft metal sealing device 7 is arranged at the tail end of the airtight cavity 1 so as to seal the unsealed end of the battery device A after water removal. The soft metal sealing device 7 of the present invention comprises an upper sealing device 70 and a lower sealing device 71, which seal the soft metal by hot pressing.
Referring to fig. 2, each of the exchange systems 6 disposed at two sides of the furnace body 5 according to the present invention includes an inner airtight door 60 disposed at the side of the furnace body 5 and an outer airtight door 61 disposed at the side of the outer conveying passage 51, an airtight space 62 is formed between the inner airtight door 60 and the outer airtight door 61, when the carrier plate 10 is fed into the furnace body 5, the inner airtight door 60 and the outer airtight door 61 at the head end of the furnace body 5 are closed, after the airtight space 62 is evacuated (or negatively pressurized) to the same environment as that in the airtight chamber 1, the inner airtight door 60 at the side of the furnace body is opened to push the carrier plate 10 into the airtight chamber 1, when the carrier plate 10 is fed out of the airtight chamber 1, the inner airtight door 60 and the outer airtight door 61 at the tail end of the furnace body are closed, and the airtight space 62 is evacuated (or negatively pressurized) to the same environment as that in the airtight chamber 1, the inner airtight door 60 at the side of the furnace body is opened to push the carrier plate 10 into the airtight space 62, thereby preventing the air from entering the airtight chamber 1 and achieving uniform mixing of the quality.
Please refer to fig. 5, which is a sectional view of a hot-pressing dewatering part of a dewatering device of a battery device according to another embodiment of the present invention. As can be seen from the figure, the dewatering device of the present invention mainly includes a vacuum airtight chamber 13, a conveying rail 14 is disposed in the vacuum airtight chamber 13, the conveying rail 14 is used to place a bearing plate 15, the bearing plate 15 is used to place at least 1 set of hot-pressing shelves 16, please refer to fig. 6, the hot-pressing shelves 16 are composed of a predetermined number of heating plates 160 and a connecting mechanism 161, the heating plates 160 have heating elements 17 to heat the heating plates 160 to a predetermined temperature, the heating plates 160 are used to place battery devices a, the connecting mechanism 161 includes connecting sheets 162 for connecting the adjacent heating plates 160, one end of each connecting sheet 162 is fixed at a predetermined position of the adjacent lower heating plate 160, the other end extends out of the adjacent upper heating plate 160 and has a sliding slot 163 as a distance for pressing down each heating plate 160, the adjacent upper heating plate 160 is provided with a pin 164 corresponding to the sliding slot 163, the pin 164 is located at the lower end of the sliding slot 163 in a normal state to connect and support the upper and lower adjacent heating plates 160 in series, and the other connecting sheet 160 is connected with another predetermined hot-pressing shelf 16; the hot pressing device 22 is disposed above the hot pressing layer frame 16, the hot pressing device 22 can be of a constant pressure type, the hot pressing device 22 is composed of a lifting system 220 and a pressing plate 221 disposed below the lifting system 220, and further includes a soft metal packaged battery device a with at least one unsealed end, the battery device a is disposed between the heating plates 160 of the hot pressing layer frame 16, the pressing plate 221 is pressed down by the descending operation of the lifting system 220, and further, in the vacuum airtight cavity 13, the upper and lower end faces of the battery device a between which the heating plates 160 of the hot pressing layer frame 16 are disposed are opposite to each other and are applied with a predetermined temperature and pressure, so as to remove the moisture in the battery device a in a heating and pressing manner, thereby having the efficacy of quickly and efficiently removing the moisture in the battery device. Compared with the prior art, the invention can release the moisture in the battery device A from the unsealed part by pressing the water in the battery device A while heating, and has the effect of quickly removing the moisture in the battery device. The invention removes the water in the battery device A in a hot pressing mode, and the water in the battery device A is pressed and released from the position without a sealing port due to the hot pressing, so that the dryness in the battery device A is uniform, and the quality is relatively stable. In addition, in the present embodiment, the hot-pressing layer frame 16 is used to simultaneously heat-press a plurality of battery devices a in a predetermined number at a time, so that the production efficiency can be improved effectively while the high quality is achieved.
The present invention further comprises a vacuum system 33, wherein the vacuum system 33 is connected to a vacuum pipe 330, the vacuum pipe 330 is connected to the vacuum airtight chamber 13, the vacuum system 33 is used to vacuumize the vacuum airtight chamber 13, so as to accelerate the removal of the moisture released from the interior of the battery device a, thereby improving the water removal efficiency.
The present invention further includes a sealed furnace body 8, two ends of the exterior of the furnace body 8 are provided with an exchange system 80, the vacuum airtight cavity 13 is disposed inside the furnace body 8, a conveying rail 14 disposed inside the vacuum airtight cavity 13 is connected to the exchange system 80 at two ends of the furnace body 8 to serve as a rail for moving the bearing plate 15, the bearing plate 15 sequentially and continuously pushed by the exchange system 80 is disposed on the conveying rail 14, the hot press support frame 16 is disposed on the bearing plate 15, a battery device a to be hot-pressed and dewatered is disposed between the press plates 160 of the hot press support frame 16, the vacuum airtight cavity 13 is provided with a predetermined number of the hot press devices 22, the hot press support frame 16 is disposed below each hot press device 22, the hot press devices 22 can set the time and pressure of hot pressing, the heating plates 160 of each hot press support frame 16 can set a predetermined temperature to perform hot pressing for a predetermined number of times, and the displacement of the bearing plate 15 is matched to sequentially reduce the moisture in the battery device a to be dewatered by multiple sets of continuous hot pressing, thereby achieving the effect of continuous and rapid removal of uniform water inside the battery device a and uniform drying quality of the battery device a.
Referring to fig. 4, each of the exchanging systems 80 disposed on both sides of the furnace body 8 according to the present invention comprises an inner airtight door 81 disposed on the side of the furnace body 8 and an outer airtight door 84 disposed on the outer side and connected to the feeding system 82 or the discharging system 83, a vacuum transferring chamber 85 is formed between the inner airtight door 81 and the outer airtight door 84, when the carrying plate 15 is fed into the furnace body 8, the inner airtight door 81 and the outer airtight door 84 at the head end of the furnace body 8 are closed, after the vacuum transferring chamber 85 is vacuumized to the same environment as that in the vacuum airtight chamber 13, the inner airtight door 81 at the tail end of the furnace body is opened to push the carrying plate 15 into the vacuum airtight chamber 13, when the carrying plate 15 is fed out of the vacuum airtight chamber 13, the inner airtight door 81 and the outer airtight door 84 at the tail end of the furnace body are closed, after the vacuum transferring chamber 85 is vacuumized to the same environment as that in the vacuum airtight chamber 13, the airtight door 81 at the side of the furnace body is opened to push the carrying plate 15 into the vacuum transferring chamber 85, thereby preventing the inner airtight chamber 13 from being mixed with air inside of the vacuum airtight chamber 13 and achieving uniform quality.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (15)
1. A method for removing water from a battery device is characterized by at least comprising the following steps: selecting a soft metal packaged battery device with at least one unsealed end, moving the battery device into an airtight cavity, applying preset temperature and pressure to the upper end face and the lower end face of the battery device in the airtight cavity, removing water in the battery by a method of heating and applying pressure, and finally sealing the unsealed side of the soft metal of the battery device with water.
2. The method of claim 1, further comprising removing the released water and replenishing the dry gas by negative pressure pumping.
3. The method of claim 1, further comprising evacuating the hermetic chamber to remove water released therefrom.
4. The method of claim 2 or 3, further comprising a plurality of sets of continuous hot pressing steps for reducing the moisture in the battery device sequentially by a predetermined number of hot press fit displacements.
5. A water removing device for a battery device, comprising: the battery device is placed on the support plate in the airtight cavity, the lifting system moves downwards to press the upper hot pressing plate downwards, and the upper hot pressing plate and the lower hot pressing plate apply preset temperature and pressure to the upper end face and the lower end face of the battery device in the airtight cavity so as to remove water in the battery device in a heating and pressing mode.
6. The apparatus as claimed in claim 5, further comprising a negative pressure system and a source gas inlet system, wherein the negative pressure system comprises a negative pressure buffer tank connected to a negative pressure pipe connected to the airtight chamber, the source gas inlet system comprises a drying and dehydrating device for drying the source gas, the drying and dehydrating device is connected to the inlet gas flow-dividing pipe disposed below the airtight chamber, the negative pressure system removes the released water from the interior of the battery apparatus by negative pressure and the source gas inlet system supplements the drying gas.
7. The water removing apparatus for battery device according to claim 6, wherein the negative pressure piping connected to the negative pressure system is provided with negative pressure gas-collecting hood water inside the airtight chamber above the battery device to be hot-pressed.
8. The apparatus as claimed in claim 6, wherein the source gas inlet system further comprises an inlet flow adjusting device.
9. The water trap apparatus of claim 6, wherein the source gas inlet system further comprises a water sampling device disposed in the hermetic chamber for analyzing the water content in the hermetic chamber.
10. The apparatus according to claim 5 or 6, further comprising a closed furnace body, wherein two ends of the outside of the furnace body are provided with an exchange system, the exchange system is connected with an external transmission channel, the airtight chamber is disposed inside the furnace body, the internal transmission channel is disposed inside the airtight chamber and connected with the two-end exchange system of the furnace body to serve as a track for the movement of the carrier plate, the carrier plates are sequentially and continuously pushed by the exchange system above the internal transmission channel, each of the carrier plates is provided with the battery apparatus to be thermally pressed for dewatering, the airtight chamber is provided with a predetermined number of the upper thermal pressing apparatuses, the carrier plates are disposed below the upper thermal pressing apparatuses, the lower thermal pressing plates are disposed below the carrier plates, the lower thermal pressing plates are disposed on the internal transmission channel, the upper thermal pressing apparatuses can set the thermal pressing time and pressure, the upper thermal pressing plates and the lower thermal pressing plates can set a predetermined temperature for a predetermined number of thermal pressing, and the upper thermal pressing plates and the lower thermal pressing plates can be set a predetermined temperature for a predetermined number of thermal pressing in cooperation with the displacement of the carrier plates, and the moisture in the battery apparatus to be sequentially reduced by a plurality of sets of continuous thermal pressing.
11. The water removing device for battery device according to claim 5 or 6, further comprising a soft metal sealing device disposed at the end of said airtight chamber, which comprises an upper sealing device and a lower sealing device for sealing the soft metal by hot pressing.
12. A water trap for a battery device, comprising: a vacuum airtight cavity, a conveying track is set in the cavity for placing a bearing plate, the bearing plate is used for placing at least 1 group of hot-pressing layer frame, the hot-pressing layer frame is composed of a predetermined number of heating plates and a connecting mechanism, the heating plates have heating elements to heat the heating plates to a predetermined temperature, a battery device is placed between the heating plates, the connecting mechanism is used for connecting the adjacent heating plates to form the hot-pressing layer frame with a predetermined number of layers in series, a hot-pressing device is set above the hot-pressing layer frame, the hot-pressing device is composed of a lifting system and a pressing plate set under the lifting system, the battery device is placed between the heating plates of the hot-pressing layer frame, the lifting system is used to lower the pressing plate, and the heating plates of the hot-pressing layer frame apply a predetermined temperature and pressure to the upper and lower ends of the battery device in the vacuum airtight cavity, and the water in the battery device is removed by heating while pressing.
13. The apparatus according to claim 12, wherein the connecting means comprises connecting pieces for connecting the adjacent heating plates, each connecting piece has one end fixed to a predetermined position of the adjacent lower heating plate and the other end extending out of the adjacent upper heating plate and having a chute for a distance for pressing down the adjacent heating plate, the adjacent upper heating plate has a pin member provided at a position corresponding to the chute of the connecting piece, the pin member is located at a lower end of the chute in a normal state to connect and support the upper and lower adjacent heating plates, and the upper heating plate is connected to the upper heating plate by another connecting piece to form a predetermined number of hot press shelves in series.
14. The apparatus as claimed in claim 12, further comprising a vacuum system connected to a vacuum pipe connected to the vacuum chamber, wherein the vacuum chamber is evacuated by the vacuum system to accelerate removal of the released moisture from the battery apparatus.
15. The water trap of battery device according to claim 12, further comprising a sealed furnace body, wherein two ends of the furnace body are provided with an exchange system, the vacuum airtight chamber is disposed inside the furnace body, a conveying track disposed inside the vacuum airtight chamber is connected to the exchange system at two ends of the furnace body to serve as a track for moving the carrier plates, the carrier plates are sequentially and continuously pushed by the exchange system on the conveying track, the hot press support is disposed on the carrier plates, the battery devices to be subjected to hot pressing for water trapping are disposed between the heating plates of the hot press support, the vacuum airtight chamber is provided with a predetermined number of the hot press devices, the hot press support is disposed under each of the hot press devices, the hot press devices can set hot pressing time and pressure, and the heating plates of each of the hot press support can set predetermined temperature for a predetermined number of times of hot pressing, and the water trapped in the water trap can be sequentially reduced by a plurality of sets of continuous hot pressing.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021107255872 | 2021-06-29 | ||
| CN2021214550996 | 2021-06-29 | ||
| CN202110725587 | 2021-06-29 | ||
| CN202121455099 | 2021-06-29 |
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| CN115548497A true CN115548497A (en) | 2022-12-30 |
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|---|---|---|---|
| CN202210025226.1A Pending CN115548497A (en) | 2021-06-29 | 2022-01-11 | Water removal method for battery device and water removal device for battery device |
| CN202220057419.0U Active CN217719714U (en) | 2021-06-29 | 2022-01-11 | Water removal device of battery device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220057419.0U Active CN217719714U (en) | 2021-06-29 | 2022-01-11 | Water removal device of battery device |
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- 2022-01-11 CN CN202210025226.1A patent/CN115548497A/en active Pending
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