CN112414006A - Drying device for battery electrode - Google Patents
Drying device for battery electrode Download PDFInfo
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- CN112414006A CN112414006A CN201911323036.2A CN201911323036A CN112414006A CN 112414006 A CN112414006 A CN 112414006A CN 201911323036 A CN201911323036 A CN 201911323036A CN 112414006 A CN112414006 A CN 112414006A
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- battery electrode
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- 238000001035 drying Methods 0.000 title claims abstract description 137
- 238000010438 heat treatment Methods 0.000 claims abstract description 86
- 239000012809 cooling fluid Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 18
- 230000003028 elevating effect Effects 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000007665 sagging Methods 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 8
- 230000035939 shock Effects 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
-
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Combustion & Propulsion (AREA)
- Textile Engineering (AREA)
- Sustainable Development (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The disclosure relates to a drying device for a battery electrode capable of uniformly and rapidly performing heat drying regardless of the size of a battery electrode by applying a radiation heating manner and effectively preventing overheating and thermal shock due to latent heat.
Description
Technical Field
The present disclosure relates to a drying apparatus for a battery electrode, which uniformly heats the battery electrode in order to dry, fire or promote chemical bonding of moisture to a thin film laminated on the battery electrode made of an aluminum thin plate or a copper thin plate in the process of manufacturing the battery electrode of a rechargeable secondary battery type battery.
Background
Unless otherwise indicated in the specification, what is described in this identification item is not prior art to the claims in this application and even if described in this identification item, should be considered prior art.
In general, an electrical and electronic device such as a mobile phone, a notebook computer, a digital camera, a wireless cleaner, an unmanned aerial vehicle, etc. necessarily includes a battery in the form of a secondary battery for supplying power.
Recently, as the demand for electric vehicles and the like has increased, secondary battery type batteries for supplying power are also actively being developed in the field of transportation vehicles such as automobiles, bicycles, electric scooters, motorcycles, buses and the like.
Therefore, the maximum width of the product size in the conventional production manner is about 600 mm, while the maximum width of the product size at present has been enlarged to about 600 mm, it is expected that the maximum width of the product size will be enlarged to about 1200 mm or more in the future. Further, the production speed of the product is currently about 70m per minute, and it is expected that the speed will be increased to 100m or more per minute in the future.
A secondary battery is provided with a battery electrode made of an aluminum thin plate or a copper thin plate, wherein a thin film made of a lithium metal or other metal as an electrode active material is applied to the surface of an anode of the battery electrode, and a thin film made of carbon and a graphite material as an electrode active material is applied to the surface of a cathode of the battery electrode.
In order to moisture-dry, fire or promote chemical bonding of the thin film in the battery electrode of the battery as described above, it is necessary to perform heat-drying in a separate drying device.
As an example of the drying apparatus for battery electrodes as described above, an electrode drying apparatus is disclosed in korean patent laid-open publication No. 10-2016-: in an electrode drying apparatus equipped with one or more drying ovens for drying a solvent in an electrode mixture for applying the electrode mixture containing an electrode active material onto an electrode plate of a current collector, the drying ovens comprising: a plurality of 1 st nozzles for supplying hot air to the upper side of the electrode plate; a plurality of 2 nd nozzles for supplying hot wind to a lower side; a plurality of rollers which can move upwards for providing support to the lower part of the electrode plate and move downwards for separating from the lower part of the electrode plate; an up-down regulator for moving the roller up and down; and a chamber in which the 1 st and 2 nd nozzles and the roller are installed, and in which the electrode plate is movable from one side portion to an opposite side portion.
Further, an electrode drying apparatus is disclosed in Korean patent publication No. 1, No. 10-2015-0049393 (2015.05.08 publication), which is characterized in that: an electrode drying device for drying an electrode provided with a metal material collector, comprising: a transfer unit for transferring the electrode from a 1 st site to a 2 nd site; and a coil part which forms an induced current on the current collector by an alternating current in a transfer process of the electrode and inductively heats the battery electrode.
However, since the conventional battery electrode drying apparatus as described above heats the battery electrode using hot air or a general heater, it is difficult to reach a target temperature in a short interval, which inevitably increases the length of the apparatus and thus causes a large amount of space for installing the apparatus, and also causes a problem in that the unit price of the produced product increases due to an excessive amount of heat required.
In addition, the conventional battery electrode drying apparatus as described above may cause a thermal shock to the surface of the battery electrode due to hot air or latent heat of the heater and thus cause a problem of poor product when the operation of the apparatus is interrupted in an emergency or due to a malfunction of the apparatus.
In addition, the drying method using a general heater using hot air is difficult to uniformly heat and dry the increased size of the battery electrodes in a short time, which causes problems of not only a decrease in the production rate of products but also an increase in the fraction defective.
Prior art documents
Patent document
1. Korean patent laid-open No. 10-2016-0091563 (2016.08.03 publication)
2. Korean patent publication No. 10-2015-0049393 (2015.05.08 publication)
Disclosure of Invention
The technical subject of the invention is to provide a drying device for battery electrodes, which can uniformly and rapidly perform heating and drying regardless of the size of the battery electrodes by applying a radiation heating method and effectively prevent overheating and thermal shock caused by latent heat.
However, the technical problem of the present invention is not limited to the above technical problem, and other technical problems can be derived from the following description.
A drying device for battery electrodes to which an embodiment of the disclosure is applied includes: a body having an inlet for inputting the battery electrode formed at one side, a heating and drying space formed therein, and an outlet for discharging the battery electrode formed at the other side; an upper chamber member, which is installed at the upper side inside the heating and drying space of the main body, and on the lower side of which a 1 st near-infrared lamp for heating and drying the battery electrode is arranged; a lower chamber member installed at a lower side of the inside of the heating and drying space of the main body, forming a heating and drying chamber together with the upper chamber member, and arranging a 2 nd near infrared lamp for heating and drying the battery electrode at an upper side; an exhaust fan installed on the upper side of the main body for exhausting the hot air in the heating and drying space to the outside of the main body; and a blowing fan installed at a lower side of the main body for forcibly supplying external air into the heating and drying space.
Preferred features of the disclosure are: the upper chamber member is vertically movable in the heating and drying space by a 1 st lifting member, and the lower chamber member is vertically movable in the heating and drying space by a 2 nd lifting member.
The drying apparatus for battery electrodes to which one embodiment of the disclosure is applied can apply a radiation heating method by means of the 1 st and 2 nd near infrared lamps installed in the upper and lower chamber members without using hot air or a general heater when heating and drying the battery electrodes, thereby uniformly and rapidly heating and drying the battery electrodes regardless of the size thereof.
Further, it is possible to discharge the overheated air in the heating and drying space to the outside by the exhaust fan and forcibly supply the external air for cooling into the heating and drying space by the air delivery fan, so that it is possible to prevent overheating due to the 1 st and 2 nd near infrared lamps and thermal impact of the battery electrodes due to the internal latent heat while maintaining the temperature in the heating and drying space at a temperature required for heat-drying the battery electrodes.
In addition, it is possible to effectively prevent overheating due to the 1 st and 2 nd near infrared lamps and thermal shock of the battery electrodes due to latent heat by lifting and lowering the upper and lower chamber members constituting the heat drying chamber for heat drying the battery electrodes in the up and down direction within the heat drying space of the main body by means of the 1 st and 2 nd chamber lifting and lowering members at a certain distance from each other.
The effects of the present invention are not limited to the above-described effects, and other effects not mentioned can be clearly understood by a worker of the related art through the description in the claims.
Drawings
Fig. 1 is a block diagram of a drying apparatus for a battery electrode to which an embodiment of the disclosure is applied.
Fig. 2 is a plan view of a drying apparatus for a battery electrode to which an embodiment of the disclosure is applied.
Fig. 3 is a diagram showing the up-and-down movement of upper and lower chambers in a drying apparatus for battery electrodes to which an embodiment of the present disclosure is applied.
Fig. 4 is a structural diagram of another embodiment of a drying apparatus for a battery electrode to which an embodiment of the disclosure is applied.
Fig. 5 is a block diagram of another embodiment of a drying apparatus for a battery electrode to which an embodiment of the disclosure is applied.
Fig. 6 is a detailed configuration diagram of a support roller to which a drying device for a battery electrode according to an embodiment of the disclosure is applied.
[ notation ] to show
1: a drying device for battery electrodes; 3: a battery electrode; 10: a main body; 11: a throwing port;
12: heating the drying space; 13: an outlet port; 14: a cavity lifting guider;
15: a non-contact temperature sensor; 16: a see-through door; 17: a door opening detection sensor;
20: an upper cavity; 21: 1 st near infrared lamp; 22: 1 st lifting component;
23: the 1 st cooling fan; 24: a 1 st cavity temperature sensor; 25: a cavity forming plate;
30: a lower cavity; 31: a 2 nd near infrared lamp; 22: a 2 nd elevating member;
33: the 1 st cooling fan; 34: a 2 nd cavity temperature sensor; 40: an exhaust fan;
50: an air supply fan; 60: a support roller; 61: a speed reducer; 62: an electromagnetic valve;
63: a flow regulating valve; 64: a temperature sensor; 65: a pressure sensor; 66: flow meter
Detailed Description
Next, the constitution and the operation of the preferred embodiment will be described with reference to the drawings. For reference, in the following drawings, each component may be omitted or schematically illustrated for convenience and clarity, and the size of each component does not represent the actual size. In addition, like reference numerals denote like constituent elements throughout the specification, and reference numerals for like constituents in individual drawings will be omitted.
As shown in fig. 1 to 3, a drying apparatus for a battery electrode to which an embodiment of the disclosure is applied includes: a body 10 having an inlet 11 for introducing a battery electrode formed at one side, a heating and drying space 12 formed therein, and an outlet 13 for discharging the battery electrode 3 formed at the other side; an upper chamber member 20, which is installed at an upper side inside the heating and drying space 12 of the main body 10, and on which a 1 st near-infrared lamp 21 for heating and drying the battery electrode 3 is arranged at a lower side; a lower chamber member 30 which is installed at a lower side in the heating and drying space 12 of the main body 10, forms a heating and drying chamber together with the upper chamber member 20, and on which a 2 nd near infrared lamp 31 for heating and drying the battery electrode 3 is arranged; an exhaust fan 40 installed at an upper side of the main body 10 for exhausting the hot air in the heating and drying space 12 to an outside of the main body 10; and a blowing fan 50 installed at a lower side of the main body 10 for forcibly supplying the external air into the heating and drying space 12.
The main body 10 is a component for constituting a frame to which the drying device for battery electrodes according to the embodiment of the present disclosure is applied.
An inlet 11 for introducing the battery electrode 3 to be heated and dried is formed at one side of the body 10, a heating and drying chamber is formed by upper and lower chamber members 20 and 30, which will be described later, to form a heating and drying space 12 for heating and drying the battery electrode 3, and an outlet 13 for discharging the heated and dried battery electrode 3 is formed at the other side.
Further, a chamber elevation guide 14 for guiding the elevation of the upper and lower chamber members 20 and 30 in the vertical direction is formed in the heating and drying space 12 of the main body 10. The chamber lifting guide 14 may be formed as a vertical rod-shaped guide rail penetrating the upper and lower chamber members 20 and 30.
A noncontact temperature sensor 15 is attached to the discharge port 13 side of the body 10 at a predetermined distance from the upper or lower portion of the discharge portion 13. The non-contact temperature sensor 15 detects the temperature of the battery electrode 3 discharged through the discharge port 13 and transmits the detected temperature to a controller (not shown), thereby automatically adjusting the output of the 1 st and 2 nd near- infrared lamps 21 and 31 installed in the upper and lower chamber members 20 and 30.
A see-through door 16 is openably and closably attached to at least one of the front side and the rear side of the main body 10. A see-through window is integrally formed in the see-through door 16 so that an operator can visually check the inside of the heat drying space 12 where the battery electrodes 3 are actually heat-dried.
A door opening detection sensor 17 is attached to the attachment portion of the see-through door 16. Since the operator may be burned when the see-through door 16 is opened during the process of heating and drying the battery electrodes 3, the door opening detection sensor 17 can function as a safety sensor for automatically stopping the operations of the 1 st and 2 nd near infrared lamps 21 and 31 by detecting whether the see-through door 16 is opened or not and transmitting the result to a controller (not shown).
An upper chamber member 20 is installed at an upper side of the inside of the heating and drying space 12 of the main body 10. The upper chamber member 20 constitutes a heat drying chamber for actually heat drying the battery electrodes 3 in the heat drying space 12 of the main body 10 together with a lower chamber member 30 described later, and a plurality of 1 st near-infrared lamps 21 for heat drying the battery electrodes 3 by radiant heating of the battery electrodes 3 are arranged on the lower side.
In order to prevent the 1 st near-infrared lamp 21 from being damaged, the upper chamber member 20 is preferably made of a heat-expandable material, and the clamp for supporting the 1 st near-infrared lamp 21 is preferably made of a material having high impact resistance.
In order to adjust the distance of the battery electrodes 3 to be heated and dried upward, the upper chamber member 20 is preferably installed to be vertically movable in the heating and drying space 12 of the main body 10 by the first vertically movable member 22.
The 1 st elevating member 22 for elevating the upper chamber 20 can be constituted by a cylinder mechanism in which a cylinder side is fixedly coupled to the upper side of the body 10 and a rod side is fixedly coupled to the upper chamber 20.
Further, a 1 st cooling fan 23 for uniformly cooling and controlling the temperature of the heating and drying chamber formed by the upper and lower chamber members 20 and 30 is installed in the upper chamber member 20.
Further, a 1 st chamber temperature sensor 24 for measuring the internal temperature of the heating and drying chamber constituted by the upper and lower chamber members 20, 30 is attached to the upper chamber member 20. The 1 st chamber temperature sensor 24 is used to provide a measurement signal related to the internal temperature of the heating and drying chamber to a controller (not shown) and thereby control the operation of the 1 st near-infrared lamp 21 and the 1 st cooling fan 23, thereby uniformly cooling the heating and drying chamber while controlling the internal temperature of the heating and drying chamber.
Further, a cavity forming plate 25 for preventing heat loss of the heating and drying cavity by covering the front and rear sides of the lower cavity member 30 is formed to protrude downward in the front and rear sides of the upper cavity member 20.
A lower chamber member 30 is installed at a lower side of the inside of the heating and drying space 12 of the main body 10. The lower chamber member 30 constitutes a heat drying chamber for actually heat drying the battery electrodes 3 in the heat drying space 12 of the main body 10 together with the upper chamber member 20, and a plurality of 2 nd near infrared lamps 31 for heat drying the battery electrodes 3 by radiant heating of the battery electrodes 3 are arranged on the upper side.
In order to prevent the 2 nd near-infrared lamp 31 from being damaged, the lower cavity member 30 is preferably made of a heat-expandable material, and the clamp for supporting the 2 nd near-infrared lamp 31 is preferably made of a material having high impact resistance.
In order to adjust the distance between the battery electrodes 3 that are being heated and dried to the lower portion, the lower chamber member 30 is preferably installed to be vertically movable in the heating and drying space 12 of the main body 10 by the second lifting member 32.
The 2 nd elevating member 32 for elevating the lower chamber 30 can be constituted by a cylinder mechanism having a cylinder side fixedly coupled to the lower side of the body 10 and a rod side fixedly coupled to the lower chamber 30.
Further, a 2 nd cooling fan 33 for uniformly cooling and controlling the temperature of the heating and drying chamber formed by the upper and lower chamber members 20 and 30 is installed in the lower chamber member 30.
Further, a second chamber temperature sensor 34 for measuring the internal temperature of the heating and drying chamber constituted by the upper and lower chamber members 20 and 30 is attached to the lower chamber member 30. The 2 nd chamber temperature sensor 34 is used to provide a measurement signal related to the internal temperature of the heating and drying chamber to a controller (not shown) and thereby control the operations of the 2 nd near-infrared lamp 31 and the 2 nd cooling fan 33, thereby uniformly cooling the heating and drying chamber while controlling the internal temperature of the heating and drying chamber.
The heating and drying chamber formed by the upper and lower chamber members 20 and 30 is a space for actually performing a thin film heating and drying process on the electrode active material applied to the battery electrode 3, has a sufficient volume for inputting the battery electrode 3 and performing the heating and drying process, and allows the battery electrode 3 in the heating and drying chamber to perform the heating and drying process in a temperature range of about 120 ℃ to 150 ℃ by controlling the operations of the 1 st and 2 nd near infrared lamps 21 and 31 and the 1 st and 2 nd cooling fans 23 and 33 installed in the upper and lower chamber members 20 and 30 by a controller (not shown).
An exhaust fan 40 is installed on the upper side of the main body 10. The exhaust fan 40 can play a role of preventing the heating and drying space 12 from being overheated by exhausting hot air staying at the upper portion of the heating and drying space 12 to the outside of the main body 10 as necessary.
Further, an air supply fan 50 is mounted on the lower side of the main body 10. The air blowing fan 40 can function to rapidly cool the heating and drying chamber constituted by the upper and lower chamber parts 20 and 30 and the heating and drying space 12 by forcibly supplying the external air into the heating and drying space 12 in case of breakage of the electrode batteries 3 or emergency.
In addition, 1 set of the upper and lower chamber members 20 and 30 can be installed in the heating and drying space 10 of the main body 10 as shown in fig. 1 to 3, while 2 sets of the upper and lower chamber members 20 and 30 can be continuously installed in some embodiments as shown in fig. 4, and 3 or more sets of the upper and lower chamber members 20 and 30 can be continuously installed although not shown.
In addition, when more than 2 sets of the upper and lower chamber parts 20 and 30 are continuously installed in the heating and drying space 12 of the main body 10, a phenomenon in which the battery electrode 3 hangs down is caused and thus a difference in interval is formed between the battery electrode 3 and the 1 st and 2 nd near infrared lamps 21 and 31, and the difference in interval causes a temperature deviation in the electrode battery 3 and further causes a significant adverse effect on the quality of the product.
In order to prevent the battery electrode 3 from drooping as described above, as shown in fig. 5, a support roller 60 for preventing the electrode battery 3 from drooping can be additionally installed between 1 set of the upper and lower cavity members 20 and 30 and another set of the upper and lower cavity members 20 and 30 continuous thereto. The support roller 60 is drivingly connected to a reducer-integrated motor 61 provided on the upper side of the main body 10 through a transmission mechanism such as a chain or a belt, and is rotationally driven thereby.
In addition, when the support roller 60 is mounted, the temperature of the surface of the support roller 60 may be excessively increased by driving the 1 st and 2 nd near- infrared lamps 21 and 31, and the quality of the battery electrode 3 may be further affected.
In order to prevent overheating of the support rollers 60 as described above, a cooling fluid such as cooling water or cooling compressed air can be supplied into the support rollers 60 as shown in fig. 6.
In order to realize the perfusion of the cooling fluid, the inside of the support roller 60 is formed in a hollow shape through which the cooling fluid can perfuse, and rotating shafts at both ends of the support roller 60 are connected to a cooling fluid supply line and a cooling fluid discharge line, respectively. At this time, a connection member having one side rotatably coupled to both end rotating shafts of the support rollers 60 and the other side non-rotatably coupled to the cooling fluid supply line and the cooling fluid discharge line is provided between both end rotating shafts of the support rollers 60 and the cooling fluid supply line and the cooling fluid discharge line.
Further, an electromagnetic valve 62 for controlling whether or not the cooling fluid is supplied is attached to the cooling fluid supply line, a flow control valve 63 for controlling the perfusion amount of the cooling fluid is attached to the cooling fluid supply line and the cooling fluid discharge line, and a temperature sensor 64 for measuring the temperature of the cooling fluid discharged after perfusing through the support rollers 60, a pressure sensor 65 for measuring the pressure of the cooling fluid discharged after perfusing through the support rollers 60, and a flow meter 66 for measuring the flow rate of the cooling fluid discharged after perfusing through the support rollers 60 are attached to the cooling fluid discharge line.
A controller (not shown) controls the solenoid valve 62 and the flow control valve 63 based on sensor signals of the temperature sensor 64, the pressure sensor 65, and the flow meter 66 so that the surface of the support roller 60 is always maintained at a constant temperature.
Thereby, not only in a general case, but also in a case where the drying device for a battery motor to which an embodiment of the disclosure is applied stops operating due to an emergency and thus the battery electrodes 3 stay inside the main body 10, it is possible to prevent in advance thermal shock and temperature deviation of the battery electrodes 3 due to latent heat of the support rollers 60.
Next, the overall operation of the drying apparatus for battery electrodes to which an embodiment of the disclosure is applied will be described with reference to fig. 1 to 6.
The drying apparatus for battery electrodes according to one embodiment of the disclosure is applied to the drying apparatus for battery electrodes, and can apply the radiation heating method by means of the 1 st and 2 nd near infrared lamps 21 and 31 installed in the upper and lower chamber members 20 and 30 without using hot air or a general heater when heating and drying the battery electrodes 3, thereby uniformly heating and drying the entire area in a short time of, for example, 0.7 to 1.4 seconds, regardless of the size of the battery electrodes 3.
Further, to which the drying device for battery electrodes according to one embodiment of the disclosure is applied, it is possible to discharge the superheated air in the heating and drying space 12 to the outside by the exhaust fan 40 and forcibly supply the outside air for cooling into the heating and drying space 12 by the air sending fan 50, thereby being able to effectively prevent overheating due to the 1 st and 2 nd near- infrared lamps 21, 31 and thermal shock of the battery electrodes 3 due to the internal latent heat while maintaining the temperature in the heating and drying space 12 at the temperature required for heating and drying the battery electrodes 3.
Further, the drying apparatus for battery electrodes according to the embodiment of the present disclosure can effectively prevent overheating due to the 1 st and 2 nd near infrared lamps 21 and 31 and thermal shock of the battery electrodes 3 due to latent heat by lifting and lowering the upper and lower chamber members 20 and 30 constituting the heating and drying chamber for heating and drying the battery electrodes 3 in the heating and drying space 12 of the main body 10 in the up-down direction by the 1 st and 2 nd chamber lifting and lowering members 22 and 32 at a predetermined distance from each other.
In addition, when the upper and lower chamber members 20 and 30 of 2 or more groups are continuously installed in the heating and drying space 12 of the main body 10, it is possible to solve the temperature deviation problem caused by the sagging of the battery electrodes 3 by installing the support rollers 60 between 1 group of the upper and lower chamber members 20 and 30 and another 1 group of the upper and lower chamber members 20 and 30 continuous thereto, and to prevent the quality degradation of the battery electrodes 3 caused by the overheating of the support rollers 60 by adopting a configuration capable of allowing the cooling fluid to be perfused through the support rollers 60.
In the above description, the preferred embodiments to which the present invention is applied are described with reference to the accompanying drawings, but the embodiments described in the present specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, and thus, there may be other various equivalents and modifications at the time of filing this application. Therefore, the embodiments described in the above are only for illustrative purposes and not limited in all aspects, the scope of the present invention should be defined by the claims to be described later rather than the detailed description, and all modifications or variations derived from the meaning and scope of the claims and the equivalent concept thereof should be construed as being included in the scope of the claims of the present invention.
Claims (7)
1. A drying device for a battery electrode, comprising:
a body having an inlet for inputting the battery electrode formed at one side, a heating and drying space formed therein, and an outlet for discharging the battery electrode formed at the other side;
an upper chamber member, which is installed at the upper side inside the heating and drying space of the main body, and on the lower side of which a 1 st near-infrared lamp for heating and drying the battery electrode is arranged;
a lower chamber member installed at a lower side of the inside of the heating and drying space of the main body, forming a heating and drying chamber together with the upper chamber member, and arranging a 2 nd near infrared lamp for heating and drying the battery electrode at an upper side;
an exhaust fan installed on the upper side of the main body for exhausting the hot air in the heating and drying space to the outside of the main body; and the number of the first and second groups,
and a blowing fan installed at a lower side of the main body for forcibly supplying the external air into the heating and drying space.
2. The drying device for a battery electrode according to claim 1, characterized in that:
the upper chamber member is vertically movable in the heating and drying space by a 1 st lifting member, and the lower chamber member is vertically movable in the heating and drying space by a 2 nd lifting member.
3. The drying device for a battery electrode according to claim 2, characterized in that:
a chamber elevating guide for guiding the elevation of the upper chamber member by the first elevating member 1 and the elevation of the lower chamber member by the second elevating member 2 is installed in the main body.
4. The drying device for a battery electrode according to claim 1, characterized in that:
a 1 st cooling fan for cooling the upper chamber member is installed in the upper chamber member, and a 2 nd cooling fan for cooling the lower chamber member is installed in the lower chamber member.
5. The drying device for a battery electrode according to claim 1, characterized in that:
the upper chamber member is provided with a 1 st chamber temperature sensor for measuring the temperature in the heating and drying chamber formed by the upper and lower chamber members, and the lower chamber member is provided with a 2 nd chamber temperature sensor for measuring the temperature in the heating and drying chamber formed by the upper and lower chamber members.
6. The drying device for a battery electrode according to claim 1, characterized in that:
the upper and lower chamber members are continuously installed in the heating and drying space of the main body in more than 2 groups, and rotatably driven support rollers for preventing the battery electrodes from sagging are installed between the upper and lower chamber members in 1 group and the upper and lower chamber members in another 1 group which are continuous thereto.
7. The drying device for a battery electrode according to claim 6, characterized in that:
the support roller is formed in a hollow shape through which a cooling fluid can be poured, and both ends of the support roller are connected to a cooling fluid supply line and a cooling fluid discharge line, respectively.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20190102985 | 2019-08-22 | ||
| KR10-2019-0102985 | 2019-08-22 | ||
| KR1020190132076A KR102324681B1 (en) | 2019-08-22 | 2019-10-23 | Resdual moisture drying apparatus for battery electrode |
| KR10-2019-0132076 | 2019-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112414006A true CN112414006A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911323036.2A Pending CN112414006A (en) | 2019-08-22 | 2019-12-20 | Drying device for battery electrode |
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| Country | Link |
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| CN (1) | CN112414006A (en) |
| DE (1) | DE102019220279B4 (en) |
Cited By (2)
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| CN114203974A (en) * | 2021-12-15 | 2022-03-18 | 安徽统凌科技新能源有限公司 | Lithium battery pole piece baking and placing tool |
| CN115839607A (en) * | 2021-10-29 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | Battery baking equipment and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217764191U (en) * | 2022-08-19 | 2022-11-08 | 宁德时代新能源科技股份有限公司 | Drying device and battery monomer drying system |
| CN115628598B (en) * | 2022-10-26 | 2023-09-29 | 深圳市时代高科技设备股份有限公司 | Lifting mechanism, oven and battery drying system |
| CN119197069B (en) * | 2024-11-26 | 2025-02-11 | 湖南瑞达智能装备有限公司 | Contact type baking device for lithium battery |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102019220279A1 (en) | 2021-02-25 |
| DE102019220279B4 (en) | 2023-08-10 |
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Application publication date: 20210226 |