WO2012118244A1 - Appareil de séchage sous vide de plaque d'électrode pour batterie secondaire et procédé de séchage associé - Google Patents

Appareil de séchage sous vide de plaque d'électrode pour batterie secondaire et procédé de séchage associé Download PDF

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Publication number
WO2012118244A1
WO2012118244A1 PCT/KR2011/004018 KR2011004018W WO2012118244A1 WO 2012118244 A1 WO2012118244 A1 WO 2012118244A1 KR 2011004018 W KR2011004018 W KR 2011004018W WO 2012118244 A1 WO2012118244 A1 WO 2012118244A1
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WO
WIPO (PCT)
Prior art keywords
elevator
plate
pole plate
pole
secondary battery
Prior art date
Application number
PCT/KR2011/004018
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English (en)
Korean (ko)
Inventor
김철영
Original Assignee
(주)엠오텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)엠오텍 filed Critical (주)엠오텍
Priority to CN2011800017331A priority Critical patent/CN102884656A/zh
Publication of WO2012118244A1 publication Critical patent/WO2012118244A1/fr

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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
    • 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
    • H01M4/04—Processes of manufacture in general
    • 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
    • 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
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • 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

Definitions

  • the present invention relates to a secondary battery pole plate drying apparatus and method used in the drying step of the pole plate of the manufacturing process of the pole plate for secondary batteries.
  • nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, lithium secondary batteries, and the like are used as power sources for electronic products.
  • lithium secondary batteries have been widely used in consideration of their lifespan and capacity.
  • the lithium secondary battery is classified into a lithium metal battery, a lithium ion battery, and a lithium polymer battery using a high-volume solid electrolyte according to the type of electrolyte.
  • the lithium secondary battery has a structure in which a unit cell or a bi-cell is stacked, wherein the unit cell has a positive plate / separator / negative plate structure, and the bi-cell has a positive plate / separator / negative plate / separator / positive plate structure.
  • a lithium ion secondary battery (henceforth a secondary battery) is manufactured largely by a pole plate manufacturing process, an assembly process, and a chemical conversion process.
  • the electrode plate manufacturing process a positive electrode plate and a negative electrode plate are manufactured.
  • the positive electrode plate is mainly manufactured by coating an active material on both surfaces of an aluminum foil in a predetermined pattern and thickness, and then drying them under high temperature and vacuum.
  • the active material is mainly lithium cobalt oxide (for example, LiCoO 2), which has a form in which a small amount of a conductive agent and a binder are mixed.
  • the negative electrode plate is mainly produced by coating the active material on both sides of the copper foil in a predetermined pattern and thickness, and then drying at high temperature and vacuum.
  • the active material is graphite or carbon, in which a small amount of an additive and a binder are mixed.
  • the electrode plate assembly which is one of the main components of such a lithium ion polymer battery, the electrode plate assembly includes a positive electrode plate and a negative electrode plate.
  • the electrode plate assembly which is one of the main components of such a lithium ion polymer battery
  • the electrode plate assembly includes a positive electrode plate and a negative electrode plate
  • the positive electrode plate, and the negative electrode plate is usually prepared by mixing the active material, the conductive material and the binder by a wet method. do.
  • the positive and negative electrode plates that generate electrical energy must be excellent in drying conditions when they are manufactured to facilitate the generation of electrical energy, and when the electrode plates contain impurities such as water, oil and gas.
  • the polarity is irregular or poor depending on the content of water, oil, and impurities, so that the rated energy is not generated, and the recharge state is poor due to the water, oil, or impurities, and the battery life is significantly shortened. Because of the closed stage, drying of the electrode plate has become a very important manufacturing process that influences the life of the battery.
  • the degree of drying between the pole plates is uneven, and the pole plate is enlarged (for example, A4 size size), such as an electric vehicle battery in one electrode plate
  • the degree of drying is uneven along the area, the performance of the battery is uneven, leading to quality problems.
  • the drying temperature is increased for sufficient drying, the flip may occur due to thermal deformation of the electrode plate, or the binder may be partially dissolved to reduce the adhesive strength between the current collector and the active material.
  • An object of the present invention is to provide a secondary battery pole plate drying apparatus used in the drying process of the electrode plate for secondary batteries, it is possible to dry uniformly enough not only the surface of the electrode plate coated with the active material (for example, carbon) but also inside the coating layer.
  • the present invention also provides a pole plate drying apparatus for a secondary battery, in which a plurality of pole plates are dried at the same time while the drying variation between the pole plates is small.
  • the electrode plate having a large area of the coated electrode plate is to provide a secondary plate electrode plate drying apparatus that can be uniformly dried in the entire area.
  • the present invention relates to a vacuum drying apparatus and a drying method of the electrode plate for secondary batteries,
  • a housing part 10 having a door D for entering and exiting the pole plate and having a drying chamber 11 shielded from the outside by an upper wall part, a side wall part and a bottom wall part;
  • Heating means 20 formed on an upper portion of the drying chamber 11;
  • Moving means (50) for moving the uppermost pole plate (S) from the loaded pole plates of the first elevator (30) to the second elevator (40);
  • the second elevator loads the pole plates (S) supplied by the moving means 50 from the first elevator 30 to the second mounting plate 41 and lowers the second mounting plate 41 by a predetermined height. It relates to a pole plate drying apparatus for a secondary battery, characterized in that it comprises a.
  • the secondary battery can be sufficiently uniformly dried to the inside of the coating layer as well as the top surface of the coating layer of the electrode plate on which the active material (for example, carbon) coating layer is formed. It is to provide a pole plate drying apparatus. In addition, even if the electrode plate having a large area of the coating layer is to provide a secondary battery pole plate drying apparatus that can be uniformly dried in the entire area.
  • FIG. 1 is a structural diagram of a pole plate drying apparatus for a secondary battery according to a first embodiment of the present invention.
  • FIG. 2 (a, b) is a structural diagram of a pole plate drying apparatus for a secondary battery according to a second embodiment of the present invention.
  • FIG 3 is an explanatory view of a method of drying a pole plate for a secondary battery according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a pole plate drying apparatus for a secondary battery according to a third embodiment.
  • FIG. 5 is a flowchart illustrating a method of drying a pole plate for a secondary battery according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a method of drying a pole plate for a secondary battery according to an embodiment of the present invention.
  • heating means 30 first elevator
  • FIG. 1 is a structural diagram of a pole plate drying apparatus for a secondary battery according to a first embodiment of the present invention
  • Figure 2 (a, b) is a structural diagram of a pole plate drying apparatus for a secondary battery according to a second embodiment of the present invention
  • Figure 3 Explanatory drawing of a pole plate drying method for a secondary battery according to an embodiment of the.
  • FIG. 4 is a structural diagram of a secondary battery pole plate drying apparatus according to a third embodiment
  • Figure 5 is a flow chart of a secondary battery pole plate drying method according to an embodiment of the present invention
  • Figure 6 is a secondary battery pole plate according to an embodiment of the present invention Flow chart of drying method.
  • the electrode plate drying apparatus for a secondary battery includes a housing part 10, a heating means 20, a first elevator 30, and a second elevator 40. And it comprises a moving means 50 and the vacuum means 60, and may further comprise a cooling means (70).
  • the housing part 10 is provided with a door D for entering and exiting the pole plate, and a drying chamber 11 shielded from the outside by an upper wall part, a side wall part, and a bottom wall part is formed.
  • the housing part 10 may be formed of a plastic or metal material having a conventional door.
  • the heating means 20 is formed above the drying chamber 11. In the present invention, the heating means 20 is preferably a far infrared lamp.
  • the moving means 50 moves the uppermost pole plate S from the loaded pole plates of the first elevator 30 to the second elevator 40.
  • the moving means 50 is provided at a position higher than the maximum lift height of the first mounting plate 31 attached to the first elevator 30 so that the uppermost pole plate S is adjacent to the adjacent second elevator 40. What is necessary is just a structure which can be moved. Moving means known prior to the filing date of the present invention, which can move a thin, rigid or flexible thin plate in a short distance, are considered to be included in the scope of the present invention.
  • the moving means 50 may be a conventional vacuum suction device having a vacuum means, a control unit for controlling the vacuum means, and a vacuum suction unit 53 connected to the vacuum means.
  • the reciprocating block 52 provided with the vacuum suction unit 53 moves along the horizontal rail 51.
  • the moving means 50 is connected to the piston forward and backward by the pneumatic cylinder, the touch bar (not shown) is connected, the control unit controls the forward and backward movement of the piston and the touch bar (not shown) of the elevator adjacent to the top plate It may be a form of pushing towards trial.
  • the first elevator 30 raises the pole plates S stacked on the first mounting plate 31 by a predetermined height.
  • the second elevator 40 loads the pole plates S supplied by the moving means 50 to the second mounting plate 41 and lowers the second mounting plate 41 by a predetermined height.
  • the 1st elevator 30 is equipped with the 1st loading board 31 which moves up and down.
  • the elevators 30 and 40 include a loading plate, a guide along which the loading plate moves, a driving unit providing power for raising and lowering the loading plate, and a control unit controlling the driving unit.
  • the lifting device structure known before the filing date of the present invention and capable of raising and lowering the loading plate by small collection height is considered to be included in the scope of the elevator of the present invention.
  • the controller (not shown) controls the driving unit (not shown) at the storage time to raise and lower the stacking plates 31 and 41 by the smallest height.
  • the moving means includes a cylinder, a piston which is lifted inside the cylinder and provided with a magnet, and a magnetic force of the magnet of the piston. It may be a control plate for controlling the pneumatic pressure before and after the piston and the cylinder of the cylinder plate integrally lifting up and down together with the magnet (M).
  • the moving means may be a servo motor and a screw column that is rotated by the servo motor, a nut part which is extrapolated and lifted by the screw column, a loading plate integrated with the nut part, and a controller for controlling the servo motor.
  • the vacuum means 60 sucks the air in the drying chamber 11 to make a vacuum of 10 -15 ⁇ 100 Torr.
  • the vacuum means 60 may be a conventional vacuum pump. It is a concept including the conventional well-known means which can drop the inside of the drying chamber 11 below atmospheric pressure.
  • the vacuum means 60 sucks air in the drying chamber 11 through the connecting pipe (H), the connecting pipe (H) is the intermediate path between the drying chamber 11 and the vacuum means (50) It may be via the cooling means 70 located in.
  • connection pipe H may further pass through the adsorption device 80 positioned in the intermediate path between the drying chamber 11 and the vacuum means 50.
  • the adsorption filter 80 may collect adhesives, solvents, solvents, moisture, electrolytes, solvents, and other chemicals used to attach the active material to prevent failure of the vacuum means and to remove harmful substances.
  • the bearing B of FIG. 4 seals between a stationary object and a rotating object and includes known means such as oil bearings, fluid seals, and the like.
  • the first heating means 20 is a movement path (Loot) and the first, second elevator 30, the pole plate is moved by the moving means 50 , 40) is positioned higher than the uppermost electrode plate and irradiated toward the upper surface of the electrode plate. It is preferable that the second heating means 90 is further provided at a position lower than the movement route (Loot) through which the pole plate moves by the moving means 50.
  • the second heating means 90 is provided between the first elevator 30 and the second elevator 40,
  • the moving means 50 is a predetermined time in the upper portion of the second heating means 90 in the movement path, so that the second heating means 90 can heat the lower surface of the pole plate being moved to another elevator for a predetermined time. It is preferable to stop for a while while holding the pole plate or to mount it on a holder positioned above the second heating means 90 for a predetermined time.
  • the second elevator 40 descends, and vice versa.
  • the lifting operation of the first elevator 30 and the second elevator 40 is preferably performed simultaneously by the same height.
  • the first elevator 30 has a screw thread formed on an outer circumferential surface thereof and supports the first mounting plate 31. And a first driving nut part 34 for elevating the first elevating screw 33 while being extrapolated to the first elevating screw 33 and elevating the first elevating screw 33. It is preferably configured to include a first pulley 35 which rotates integrally with the nut part 34.
  • the second elevator 40 has a screw thread formed on an outer circumferential surface thereof and supports the first mounting plate 31. And a second drive nut portion 44 for elevating and lifting the second elevating screw 43 while being extrapolated to the second elevating screw 43 to rotate in and out of the second elevating screw 43. It is preferable to comprise the 2nd pulley 45 which rotates integrally with the nut part 44.
  • the first pulley 35 and the second pulley 45 are the same by the motor 49 and the belt V.
  • the first lifting screw 33 and the second lifting screw 43 is preferably a screw thread is formed opposite to rotate in the opposite direction to each other.
  • the vacuum drying method of the electrode plate for the secondary battery includes a housing part 10 having a heating means 20 on the drying chamber 11 and a first loading plate.
  • the 1st elevator 30 provided with the 31, the 2nd elevator 40 provided with the 2nd loading board 41, and the pole plate of the 1st loading board 31 are moved to the 2nd elevator 40.
  • Providing a pole plate drying apparatus for a secondary battery comprising a moving means to make (S10); Stacking a plurality of electrode plates on the first elevator (30) (S20); It comprises a; making the drying chamber 11 in a vacuum state of 10 -15 ⁇ 100 Torr, and heating the interior of the drying chamber 11 by the heating means 20 (S30).
  • the moving means 50 further moves the uppermost electrode plate of the first mounting plate 31 to the second elevator 40.
  • the first elevator 30 raises the first mounting plate 31 by the predetermined height H1, and the second elevator 40 lowers the second mounting plate 41 by the predetermined height H1 (S50).
  • T1 predetermined time
  • step S40, step S50, and step S60 until all of the pole plates of the first mounting plate 31 move to the second mounting plate 41 (S70).
  • the moving unit 50 returns to the second stacking plate 41.
  • the first elevator 30 lowers the first mounting plate 31 by the predetermined height H1
  • the second elevator 40 raises the second mounting plate 41 by the predetermined height H1 (S150).
  • the moving means 50 moves the uppermost pole plate of the first mounting plate 31 to the second elevator 40.
  • the moving means 50 is positioned between the first elevator 30 and the second elevator 40 for a predetermined time,
  • the second heating means 90 provided between the first elevator 30 and the second elevator 40 is a step (S45) for heating the pole plate in the lower portion of the pole plate;
  • the predetermined height will be the height occupied by one pole plate and can be generally thick. It is natural that the predetermined time T1 can be appropriately selected by the designer according to the temperature of the heater, the irradiation amount, the size of the drying chamber, the quantity of drying of the electrode plate, the width of the electrode plate, and the degree of drying required.
  • the electrode plate is subjected to the same temperature conditions and irradiation conditions in a constant time flow to achieve a uniform drying compared to the electrode plate and the electrode plate, and even to a very high temperature in one electrode plate Prototype test results showed that it was possible to achieve a uniform and sufficient drying effect deep into the coating layer for an appropriate drying time without raising.
  • the present invention includes a housing part (10) having a door (D) for entering and exiting the pole plate and having a drying chamber (11) shielded from the outside by an upper wall portion, a side wall portion and a bottom wall portion;
  • First heating means 20 formed on an upper portion of the drying chamber 11 to heat the electrode plate S;
  • Moving means (50) for moving the uppermost pole plate (S) from the loaded pole plates of the first elevator (30) to the second elevator (40);
  • An elevator 40 relates to a pole plate drying apparatus for a secondary battery, characterized in that it comprises a.
  • the secondary battery can be sufficiently uniformly dried to the inside of the coating layer as well as the top surface of the coating layer of the electrode plate on which the active material (for example, carbon) coating layer is formed. It is to provide a pole plate drying apparatus. In addition, even if the electrode plate having a large area of the coating layer is to provide a secondary battery pole plate drying apparatus that can be uniformly dried in the entire area.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention concerne un appareil de séchage d'une plaque d'électrode, pour une batterie secondaire, et, plus précisément, un appareil de séchage d'une plaque d'électrode, pour une batterie secondaire, qui comprend : une porte pour insérer et retirer une plaque d'électrode ; un boîtier (10) dans lequel une chambre de séchage (11), qui est protégée de l'extérieur par une paroi supérieure, une paroi latérale et une paroi inférieure, est formé ; un moyen de chauffage (20) formé sur le dessus de la chambre de séchage (11) ; un premier élévateur (30) pour soulever la plaque d'électrode (S) stratifiée sur une première plaque de chargement (31) à une hauteur prédéterminée ; un moyen de transfert (50) pour transférer la plaque d'électrode la plus haute (S), parmi les plaques d'électrode chargées sur le premier élévateur, sur un second élévateur (40) ; un second élévateur (40) abaissant une seconde plaque de chargement (41) à une hauteur prédéterminée tout en chargeant la plaque d'électrode (S) fournie par le premier élévateur (30) sur une seconde plaque de chargement (41) par le moyen de transfert (50).
PCT/KR2011/004018 2011-02-28 2011-06-01 Appareil de séchage sous vide de plaque d'électrode pour batterie secondaire et procédé de séchage associé WO2012118244A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800017331A CN102884656A (zh) 2011-02-28 2011-06-01 二次电池用极板的真空干燥装置及干燥方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110017661A KR101077069B1 (ko) 2011-02-28 2011-02-28 이차전지용 극판의 진공 건조장치 및 건조 방법
KR10-2011-0017661 2011-02-28

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WO2012118244A1 true WO2012118244A1 (fr) 2012-09-07

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PCT/KR2011/004018 WO2012118244A1 (fr) 2011-02-28 2011-06-01 Appareil de séchage sous vide de plaque d'électrode pour batterie secondaire et procédé de séchage associé

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Country Link
KR (1) KR101077069B1 (fr)
CN (1) CN102884656A (fr)
WO (1) WO2012118244A1 (fr)

Cited By (1)

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CN114754545A (zh) * 2022-01-27 2022-07-15 芜湖天弋能源科技有限公司 一种高效的干燥工艺及装置

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KR101170622B1 (ko) * 2012-04-13 2012-08-03 (주)엠오텍 집단식 이차전지용 극판 건조 및 이송 장치 및 방법
CN103335510A (zh) * 2013-07-25 2013-10-02 王兆进 一种敞开式自动升降红外烘干的升降架
KR102299988B1 (ko) 2018-01-16 2021-09-09 주식회사 엘지에너지솔루션 이차전지용 노칭장치 및 노칭방법
KR102306546B1 (ko) 2018-05-23 2021-09-30 주식회사 엘지에너지솔루션 이차전지용 노칭장치 및 노칭방법
CN116391268A (zh) * 2021-03-31 2023-07-04 株式会社Lg新能源 电极干燥装置
CN115597346A (zh) * 2022-10-24 2023-01-13 江苏展旺能源科技有限公司（Cn） 一种锂电池制造用极板烘干装置

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CN114754545B (zh) * 2022-01-27 2024-01-26 芜湖天弋能源科技有限公司 一种高效的干燥工艺及装置

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KR101077069B1 (ko) 2011-10-26
CN102884656A (zh) 2013-01-16

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