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WO2018182387A1 - Système d'inspection de fuite de batterie secondaire - Google Patents

Système d'inspection de fuite de batterie secondaire Download PDF

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Publication number
WO2018182387A1
WO2018182387A1 PCT/KR2018/003872 KR2018003872W WO2018182387A1 WO 2018182387 A1 WO2018182387 A1 WO 2018182387A1 KR 2018003872 W KR2018003872 W KR 2018003872W WO 2018182387 A1 WO2018182387 A1 WO 2018182387A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary battery
unit
leak
stage
leak inspection
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2018/003872
Other languages
English (en)
Korean (ko)
Inventor
윤진국
신종훈
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ets Co Ltd
Original Assignee
Ets Co Ltd
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 Ets Co Ltd filed Critical Ets Co Ltd
Publication of WO2018182387A1 publication Critical patent/WO2018182387A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M10/4285—Testing apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/3865—Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • 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
    • H01M10/04—Construction or 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a secondary battery, and more particularly, to a leak inspection system of a secondary battery for inspecting the leak of a secondary battery sealed with a pouch.
  • a chemical cell is composed of a pair of electrodes and an electrolyte of a positive electrode and a negative electrode, and the amount of energy that can be stored varies depending on the material of the electrode and the electrolyte.
  • Secondary batteries are applied to various technical fields throughout the industry. For example, secondary batteries are used as energy sources for advanced electronic devices such as wireless mobile devices, and air pollution of existing gasoline and diesel internal combustion engines using fossil fuels. It is also attracting attention as an energy source for hybrid electric vehicles, which is being proposed as a solution for this.
  • Secondary batteries are manufactured in various ways depending on the shape of the case housing the electrode assembly, and typical shapes include cylindrical, rectangular, and pouch types.
  • the cylindrical secondary battery uses a cylindrical aluminum can
  • the rectangular secondary battery uses a rectangular aluminum can
  • the pouch type secondary battery is sealed with a pouch in which a thin aluminum laminate film made of aluminum is used as a pack. It is relatively light in weight and excellent in stability and is widely used in recent years.
  • a configuration of a pouch-type secondary battery includes a stack, which is an electrode assembly formed by interposing a separator, which is a separator between a negative electrode and a positive electrode, and an aluminum-laminated film by sealing the stack therein.
  • the pouch is formed, and one end is connected to the stack, and the other end is exposed to the outside of the pouch and is composed of a plate-shaped negative electrode tab for inducing current to the outside.
  • a secondary battery is generally completed by injecting an electrolyte into a pouch containing a battery cell composed of a negative electrode, a positive electrode and a separator interposed therebetween, and then sealing it.
  • the secondary battery thus manufactured is operated in such a way that ions are generated from the electrolyte injected between the negative electrode and the positive electrode and move between the electrodes, thereby generating electromotive force, and thereby charging and discharging.
  • the secondary battery has a sealed structure that can prevent the loss of the electrolyte solution affecting the charge and discharge capacity, and prevent the leakage of the electrolyte solution in consideration of the occurrence of internal pressure.
  • the electrolyte leaks due to poor leakage of the case in such a secondary battery, it is treated as a defective product. Therefore, leakage test is performed in the manufacturing process line, and the welding part of the cap plate welded to the case is usually X-ray or The inspection will be carried out by visual confirmation.
  • An object of the present invention is to solve the above problems, by measuring the distance to the plate surface of the secondary battery under atmospheric pressure and under vacuum and calculating the deviation, the electrolyte at the corresponding position when the calculated deviation is greater than the predetermined reference value
  • the present invention provides a leak inspection system for a secondary battery that can significantly improve the reliability of inspection for electrolyte leakage by judging that there is a leak.
  • a leak inspection system of a secondary battery 10 comprising: a loading unit 100 for sequentially loading a secondary battery 10 so that a plate surface faces upwards;
  • the leakage inspection unit 200 receives the secondary battery 10 from the loading unit 100 and measures the distance change with respect to the plate surface of the secondary battery 10 in a preset vacuum state to inspect the leakage of the secondary battery 10. )Wow;
  • the leak inspection system of the secondary battery 10 may further include a sorting unit 400 that sorts and discharges the secondary battery 10 inspected as defective in the leak inspection unit 200.
  • the leak inspection unit 200 may further include an identification display unit for displaying a mark for identification on the surface of the secondary battery 10 inspected as defective.
  • the leak inspection unit 200 includes a stage unit 220 that receives and supports the secondary battery 10 from the loading unit 100 and moves up and down;
  • An upper housing 210 installed at an upper side of the stage unit 220 to seal an inspection space S including the secondary battery 10 by an ascending operation of the stage unit 220;
  • the inspection space S which is coupled to at least one of the upper housing 210 and the stage unit 220 and sealed by the close contact between the upper housing 210 and the stage unit 220, is preset at atmospheric pressure.
  • the distance measuring unit 230 installed in the upper housing 210 and moved in parallel with the upper surface of the stage 220 to measure the distance to the plate surface of the secondary battery 10 supported by the stage 220.
  • the secondary battery 10 may include a controller for determining that there is a leak.
  • the distance measuring unit 230 may include at least one displacement sensor unit 231 installed outside the upper surface of the upper housing 210, and the displacement sensor unit 231 parallel to the upper surface of the stage unit 220. Movement guide portions 232 and 233 for guiding movement may be included.
  • At least a portion of the upper surface of the upper housing 210 may be made of a material that can transmit light.
  • the leak inspection system of the secondary battery measures the distance to the plate surface of the secondary battery under atmospheric pressure and under vacuum, calculates the deviation, and when the calculated deviation is larger than a predetermined reference value, the electrolyte leaks from the corresponding position.
  • the leak inspection system of the secondary battery according to the present invention by mounting an ultra-precision odor sensor in the exhaust pipe for converting the inspection space into a vacuum state, whether the electrolyte leaks through the strength and odor component of the substance in the inspection space and There is an advantage to measuring the degree of leakage.
  • the leak test system of the secondary battery according to the present invention whether the leak of the secondary battery in two stages through the leak test using the change in the distance of the plate surface of the secondary battery according to the pressure difference, and the leak test using the odor sensor As a result, the inspection of the electrolyte leakage of the secondary battery of the inspection can be precisely performed.
  • FIG. 1 is a perspective view showing an example of a secondary battery to be inspected in the leak inspection system of a secondary battery according to the present invention.
  • FIG. 2 is a sectional view taken along the line II-II in FIG. 1.
  • FIG. 3 is a plan view showing the arrangement of a leak inspection system of a secondary battery according to the present invention.
  • 4A and 4B are sectional views showing the leak inspection portion of the leak inspection system of FIG.
  • FIG. 5 is a plan view showing the leak inspection unit of FIGS. 4A and 4B.
  • FIG. 5 is a plan view showing the leak inspection unit of FIGS. 4A and 4B.
  • the leak inspection system of the secondary battery according to the present invention is a system for inspecting the leak of the secondary battery 10, as shown in FIGS. 3 to 5.
  • the first electrode sheet 13 and the second electrode sheet 14 are in contact with each other.
  • the pouches are alternately stacked to seal the secondary battery cell 20, in which the separator 12 is positioned between the first electrode sheet 13 and the second electrode sheet 14, and the secondary battery cell 20 impregnated in the electrolyte. And (11).
  • the first electrode sheet 13 and the second electrode sheet 14 are stacked alternately with each other and separated by the separator 12 therebetween, respectively, to form a positive electrode and a negative electrode of the secondary battery 10.
  • the member may be formed of a metal sheet according to the electrode characteristics.
  • the separator 12 is a member interposed between the first electrode sheet 13 and the second electrode sheet 14, and preferably has a material having high wettability to the electrolyte and high chemical resistance.
  • the separator 12 may have various materials according to materials of the first electrode sheet 13 and the second electrode sheet 14 constituting the secondary battery 10, physical properties of the electrolyte, and the like.
  • the pouch 11 may be a member for sealing the secondary battery cell 20 impregnated with the electrolyte and may have various materials depending on the material of the first electrode sheet 13 and the second electrode sheet 14 and the properties of the electrolyte. have.
  • the pouch 11 is sealed after the electrolyte is injected by the electrolyte injection device according to the present invention in a state in which the secondary battery cell 20 is inserted and the upper side is opened and the remaining part is sealed.
  • the first electrode sheet 13 and the second electrode sheet 14 are alternately stacked with each other, and the first electrode sheet ( 13) and a secondary battery cell 20 in which the separator 12 is positioned between the second electrode sheet 14 and a pouch 11 for sealing the secondary battery cell 20 impregnated with the electrolyte, and includes a plate-shaped structure.
  • the leakage inspection unit 200 receives the secondary battery 10 from the loading unit 100 and measures the distance change with respect to the plate surface of the secondary battery 10 in a preset vacuum state to inspect the leakage of the secondary battery 10.
  • an unloading unit 300 for unloading the secondary battery 10 inspected as good quality in the leak inspection unit 200.
  • the loading unit 100 may be configured in a variety of configurations in which the secondary battery 10 is sequentially loaded so that the plate surface faces upward.
  • the loading unit 100 may be configured as a conveyor belt that supports and transports the secondary battery 10, but is not limited thereto.
  • the loading unit 100 may load the secondary battery 10 mounted on the tray 30.
  • the tray 30 may have various configurations in which the secondary battery 10 is seated so that the plate surface of the secondary battery 10 faces upward.
  • the tray 30, the wheel portion 31 may be installed on one side or the bottom in order to move the tray 30 by the rotation.
  • the tray 30 may be moved according to rotation to the wheel part 31 by an external force by a pusher or the like while being spaced apart from the support surface.
  • the leak inspection unit 200 receives the secondary battery 10 from the loading unit 100 and measures the distance change with respect to the plate surface of the secondary battery 10 in a preset vacuum state to leak the secondary battery 10.
  • Various configurations are possible with the configuration to check.
  • the leak inspection unit 200 may be installed at one side of the loading unit 100 to receive the secondary battery 10 loaded through the loading unit 100.
  • the leak inspection system preferably includes a plurality of leak inspection units 200 to perform leak inspection on the plurality of secondary batteries 10 at the same time.
  • the leak inspection unit 200 includes a stage unit 220 that receives and supports the secondary battery 10 from the loading unit 100 and moves up and down;
  • An upper housing 210 installed at an upper side of the stage unit 220 to seal an inspection space S including the secondary battery 10 by an ascending operation of the stage unit 220;
  • the inspection space S coupled to at least one of the upper housing 210 and the stage unit 220 and closed by close contact with the upper housing 210 and the stage unit 220 may be pressurized under a predetermined vacuum pressure at atmospheric pressure.
  • a pressure control unit for lowering A distance measuring unit 230 installed in the upper housing 210 and moving in parallel with the upper surface of the stage unit 220 to measure the distance to the plate surface of the secondary battery 10 supported by the stage unit 220;
  • the distance to the plate surface of the secondary battery 10 supported by the stage measuring unit 230 by the distance measuring unit 230 is set in advance by comparing the first measuring distance measured under atmospheric pressure with the second measuring distance measured under vacuum pressure.
  • the secondary battery 10 may include a controller that is determined to be defective due to leakage.
  • the stage unit 220 is supported by receiving the secondary battery 10 from the loading unit 100 and can be configured in various configurations to move up and down.
  • the stage unit 220 is mounted with the secondary battery 10 seated so that the plate surface of the secondary battery 10 faces upward and the loading unit 100 by the wheel part 31. It may be a plate supporting the bottom surface of the tray 30 moved from).
  • the stage unit 220 may be combined with a lifting unit (not shown) for moving the stage unit 220 in the vertical direction.
  • the lifting unit is configured to move the stage unit 220 up and down, and various configurations such as a linear moving device are possible.
  • the stage unit 220 may be configured to form a sealed inner inspection space (S) in close contact with the edge end of the upper housing 210 to be described later.
  • S sealed inner inspection space
  • the upper housing 210 is installed on the upper side of the stage 220, the configuration to seal the inspection space (S) including the secondary battery 10 by the lifting operation of the stage 220 is possible in various configurations. Do.
  • the upper housing 210 may have a rectangular parallelepiped shape in a state in which the upper housing 210 is combined with the stage 220 to form an internal space of the rectangular parallelepiped together with the stage 220.
  • the upper housing 210 may be fixedly installed above the stage unit 220.
  • the upper housing 210 may be opened at the lower side to be coupled to the stage 220 moved upward.
  • the upper housing 210 may further include an O-ring for closing the coupling area with the stage unit 220 along the lower opening.
  • the pressure control unit is coupled to at least one of the upper housing 210 and the stage unit 220 to preset the inspection space (S) sealed by the close contact of the upper housing 210 and the stage unit 220 at a predetermined pressure.
  • Various configurations are possible as the configuration for lowering the pressure under vacuum pressure.
  • the pressure control unit may be connected to at least one of the upper housing 210 and the stage unit 220, for example, an exhaust pipe 241 connected to one or more exhaust ports formed in the upper housing 210, and connected to an exhaust pipe 241. It may include a vacuum pump 245 for converting the space (S) between the atmospheric pressure and the predetermined vacuum pressure.
  • the exhaust pipe 241 has an upper housing 210 for converting the pressure of the internal space S between the atmospheric pressure and the preset vacuum pressure in a state where the stage 220 is moved upward and the inspection space S is closed. And at least one of the stage unit 220, for example, one or more exhaust ports formed in the upper housing 210.
  • the exhaust pipe 241 is coupled to at least one of the upper housing 210 and the stage unit 220 to close the inspection space (S) closed by the close contact between the upper housing 210 and the stage unit 220.
  • the pressure can be dropped from atmospheric pressure to a predetermined vacuum pressure.
  • the vacuum pump 245 is connected to the exhaust pipe 241 to convert the inspection space (S) between the atmospheric pressure and the predetermined vacuum pressure in consideration of forming a predetermined vacuum pressure can be selected appropriate vacuum pump have.
  • the exhaust pipe 241 may be provided with a vacuum valve 250 for maintaining a constant internal pressure of the inspection space (S).
  • a conversion from vacuum pressure to atmospheric pressure is required, and gas injection for injecting gas such as air and inert gas into the test space S is performed. It may further include a portion (not shown).
  • the gas injection unit may be configured to inject a gas such as air or inert gas into the inspection space S before the stage unit 220 is separated from the upper housing 210.
  • the distance measuring unit 230 is installed in the upper housing 210 and moved in parallel with the upper surface of the stage 220 to measure the distance to the plate surface of the secondary battery 10 supported by the stage 220.
  • Various configurations are possible with the configuration.
  • the distance measuring unit 230 may include at least one displacement sensor unit 231 installed outside the upper surface of the upper housing 210 and a displacement sensor unit 231 parallel to the upper surface of the stage unit 220. Movement guide parts 232 and 233 for guiding the movement, and a driving unit (not shown) for driving the movement of the displacement sensor unit 231.
  • the displacement sensor unit 231 is configured to measure the distance to the plate surface of the secondary battery 10 supported on the upper surface of the stage unit 220.
  • the displacement sensor unit 231 may be a laser displacement sensor, but is not limited thereto.
  • the displacement sensor unit 231 may move in one of the X and Y axes and measure a distance from the plurality of measurement points to the secondary battery 10.
  • the height profile of the whole plate surface of the secondary battery 10 may be obtained through the distance data measured at the plurality of measurement points.
  • the distance measuring unit 230 preferably includes a plurality of displacement sensor units 231.
  • At least a portion of the upper surface of the upper housing 210 may be composed of a glass plate 212 having a predetermined thickness.
  • the plate 212 may have a planar shape corresponding to the opening 211 formed on the upper surface of the upper housing 210, and may be installed in the opening 211.
  • the movement guide parts 232 and 233 are installed outside the upper surface of the upper housing 210, and the X-axis movement guide 232 for guiding the X-axis movement of the displacement sensor unit 231, and the upper housing 210. It may be installed on the outside of the upper surface of the) may include a Y-axis movement guide 233 for guiding the movement in the Y-axis direction of the displacement sensor unit 231.
  • the controller may measure the distance to the plate surface of the secondary battery 10 supported by the stage unit 220 by the distance measuring unit 230 and the first measurement distance measured under atmospheric pressure and the second measurement distance measured under vacuum pressure. In comparison, when there is a portion where a deviation occurs over a preset range, it may be determined that there is a leak in the secondary battery 10.
  • the controller compares the first measurement distance and the second measurement distance measured at the plurality of measurement points, calculates an area range formed by a portion where a deviation occurs over a preset range, and sets the reference area to which the corresponding area is preset If it exceeds, it can be judged as bad.
  • the leak inspection unit 200 may further include an identification display unit for displaying a mark for identification on the surface of the secondary battery 10 inspected as defective.
  • the identification display unit may be configured in various ways by displaying a mark for identification on the surface of the secondary battery determined as defective in the control unit.
  • the identification display unit may be a marking apparatus or a taping apparatus for displaying a laser mark or a taping label that can be identified with the naked eye, or the like as a defect marker, but is not limited thereto.
  • the leak inspection unit 200 may further include an odor measuring sensor that can measure the odor component and odor intensity of the air in the inspection space (S).
  • the odor measuring sensor is configured to measure the odor component and the odor intensity of the air in the test space (S) in order to check whether the secondary battery 10 has a variety of configurations.
  • the odor sensor may be installed in the flow path of the exhaust pipe 241 to measure the smell of the air in the process of evacuating the inside of the inspection space (S) by the pressure control unit.
  • the exhaust pipe 241 may further include a secondary valve (not shown) for odor measurement in the odor sensor.
  • the present invention can more accurately check whether the leak of the secondary battery 10 and the degree of leakage through the primary inspection through the distance measuring unit 230 and the secondary inspection through the odor sensor.
  • the unloading unit 300 may be configured in a variety of configurations to unload the secondary battery 10 inspected as a good product in the leak inspection unit 200.
  • the unloading unit 300 may be configured as a conveyor belt for receiving the secondary battery 10 or the tray 30 on which the secondary battery 10 is seated on the leak inspection unit 200 and discharging them to the outside. It is not limited to this.
  • the leak inspection system of the secondary battery 10 may further include a sorting unit 400 for selecting and discharging the secondary battery 10 inspected as defective in the leak inspecting unit 200.
  • the sorting unit 400 may be configured in a variety of configurations in which the secondary battery 10 determined as defective is sorted and discharged.
  • the sorting unit 400 may be configured as a conveyor belt for supporting and transporting the secondary battery 10 or the tray 30, but is not limited thereto.
  • the sorting unit 400 receives the secondary battery 10 that is determined to be defective from the leak inspection unit 200 directly or receives the secondary battery 10 that is determined to be defective from the unloading unit 300 and discharges it to the outside. can do.
  • the upper housing 210 has been described as being coupled / separated by the movement of the stage unit 220 in a fixed state, but the upper housing 210 and the stage unit 220 are moved relative to each other. Of course, all may be moved or only the upper housing 210 may be moved.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne une batterie secondaire et, plus particulièrement, un système d'inspection d'une fuite d'une batterie secondaire, qui inspecte une fuite d'une batterie secondaire scellée avec une poche. L'invention concerne un système pour inspecter une fuite d'une batterie secondaire qui comprend : une cellule de batterie secondaire (20) d'une structure de type plaque, dans laquelle une première feuille d'électrode (13) et une seconde feuille d'électrode (14) sont empilées en alternance et un séparateur (12) est positionné entre la première feuille d'électrode (13) et la seconde feuille d'électrode (14) ; et une poche (11) pour sceller l'élément de batterie secondaire (20) imprégné dans un électrolyte, le système pour inspecter une fuite d'une batterie secondaire (10) comprenant : une unité de chargement (100) pour charger séquentiellement la batterie secondaire (10) de telle sorte qu'une surface de plaque de la batterie secondaire (10) soit tournée vers le haut ; une unité d'inspection de fuite (200) pour contrôler une fuite de la batterie secondaire (10) en mesurant un changement d'une distance à partir d'une surface de chargement de la batterie secondaire (10) à la surface de plaque dans un état de vide prédéterminé après réception de la batterie secondaire (10) à partir de l'unité de chargement (100) ; et une unité de déchargement (300) pour décharger une batterie secondaire (10) qui est inspectée pour être dans un bon état par l'unité d'inspection de fuite (200).
PCT/KR2018/003872 2017-03-31 2018-04-02 Système d'inspection de fuite de batterie secondaire Ceased WO2018182387A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170041609A KR20180111122A (ko) 2017-03-31 2017-03-31 이차전지의 리크검사시스템
KR10-2017-0041609 2017-03-31

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WO2018182387A1 true WO2018182387A1 (fr) 2018-10-04

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WO (1) WO2018182387A1 (fr)

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CN114207907A (zh) * 2019-08-26 2022-03-18 株式会社Lg新能源 电解质检测装置及包括该电解质检测装置的二次电池传送设备

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KR102775844B1 (ko) * 2019-04-09 2025-03-05 (주)이티에스 이차전지셀의 디가스시스템
KR102509603B1 (ko) 2019-09-18 2023-03-10 주식회사 엘지에너지솔루션 저전압 불량 파우치형 이차전지 셀을 검출하기 위한 가압 단락 검사장치
KR102169036B1 (ko) * 2020-03-19 2020-10-23 주식회사 와이에이치티 이차전지 셀에 대한 내압 측정 장치
KR102875276B1 (ko) * 2020-07-02 2025-10-23 주식회사 엘지에너지솔루션 파우치셀의 오염 검사 장치 및 검사 방법
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