KR20220012617A - Sealing apparatus for sealing part of battery cell and using method thereof - Google Patents

Sealing apparatus for sealing part of battery cell and using method thereof Download PDF

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KR20220012617A
KR20220012617A KR1020200091614A KR20200091614A KR20220012617A KR 20220012617 A KR20220012617 A KR 20220012617A KR 1020200091614 A KR1020200091614 A KR 1020200091614A KR 20200091614 A KR20200091614 A KR 20200091614A KR 20220012617 A KR20220012617 A KR 20220012617A
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sealing
heating block
heater
temperature
battery cell
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KR1020200091614A
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Korean (ko)
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KR102364600B1 (en
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이창환
최성일
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이창환
최성일
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/433Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2092Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" and involving the use of a facer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30Electrical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/102Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105Pouches or flexible bags
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/34Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3468Batteries, accumulators or fuel cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7146Battery-cases
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

Disclosed are a sealing apparatus for a sealing part of a battery cell, and a method for using the same. According to one embodiment of the present invention, the sealing apparatus seals a fused sealing part of a battery case on the outer peripheral surface of a receiving part in which an electrode assembly is mounted in the battery case of a laminate sheet including a resin layer and a metal layer. The sealing apparatus comprises: a heating block heated by a heater; a sealing tool coupled to the lower part of the heating block to seal a fused sealing part; the heater heating the heating block; a coil wound around the heater divided into a plurality of sections; a plurality of temperature sensors spaced apart from each other in the heating block to measure the temperature of the heating block heated by the heater; and a controller controlling operation of the apparatus. The controller measures the temperature of the heating block by using the plurality of temperature sensors, thereby uniformly controlling the temperatures of the heating block and the sealing tool.

Description

전지셀 실링부 실링장치 및 그 이용 방법 {SEALING APPARATUS FOR SEALING PART OF BATTERY CELL AND USING METHOD THEREOF}Battery cell sealing unit sealing device and method of using the same

본 발명은 전지셀 실링부 실링장치 및 그 이용 방법에 관한 것이다.The present invention relates to a battery cell sealing unit sealing device and a method of using the same.

최근 사용량이 증가하고 있는 이차전지는, 전지의 형상 면에서 얇은 두께로 휴대폰 등과 같은 제품들에 적용될 수 있는 각형 이차전지와 파우치형 이차전지에 대한 수요가 높고, 재료 면에서는 높은 에너지 밀도, 방전 전압, 출력 안정성 등의 장점을 가진 리튬이온 전지, 리튬이온 폴리머 전지 등과 같은 리튬 이차전지에대한 수요가 높다.Secondary batteries, which are being used recently, have high demand for prismatic secondary batteries and pouch-type secondary batteries that can be applied to products such as mobile phones with a thin thickness in terms of battery shape, and high energy density and discharge voltage in terms of materials. Demand for lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries with advantages such as , output stability, etc. is high.

또한, 이차전지는 양극/분리막/음극 구조의 전극조립체가 어떠한 구조로 이루어져 있는지에 따라 분류되기도 하는 바, 대표적으로는 긴 시트형의 양극들과 음극들을 분리막이 개재된 상태에서 권취한 구조의 젤리-롤(권취형) 전극조립체, 소정 크기의 단위로 절취한 다수의 양극과 음극들을 분리막을 개재한 상태로 순차적으로 적층한 스택형(적층형) 전극조립체, 소정 단위의 양극과 음극들을 분리막을 개재한 상태로 적층한 바이셀(Bi-cell) 또는 풀셀(Full cell)들을 분리필름으로 권취한 구조의 스택/폴딩형 전극조립체 등을 들 수 있다.In addition, secondary batteries are classified according to the structure of the electrode assembly of the positive electrode/separator/negative electrode structure. Typically, a jelly-like structure in which a long sheet-shaped positive electrode and negative electrode are wound with a separator interposed therebetween. A roll (winding type) electrode assembly, a stack type (stacked type) electrode assembly in which a plurality of positive and negative electrodes cut in units of a predetermined size are sequentially stacked with a separator interposed therebetween, a predetermined unit of positive and negative electrodes interposed with a separator A stack/folding type electrode assembly having a structure in which bi-cells or full cells stacked in a state of being stacked with a separation film are wound.

최근에는, 스택형 또는 스택/폴딩형 전극조립체를 알루미늄 라미네이트시트의 파우치형 전지케이스에 내장한 구조의 파우치형 전지셀이, 낮은 제조비, 작은 중량, 용이한 형태 변형 등을 이유로, 많은 관심을 모으고 있고 또한 그것의 사용량이 점차적으로 증가하고 있다.Recently, a pouch-type battery cell having a structure in which a stack-type or stack/folding-type electrode assembly is embedded in a pouch-type battery case of an aluminum laminate sheet has attracted a lot of attention due to low manufacturing cost, small weight, easy shape deformation, etc. and its usage is gradually increasing.

도 1에는 종래의 음극 및 양극을 포함하는 전극조립체를 내장하고 있는 파우치형 전지셀의 일반적인 구조가 분해 사시도로서 모식적으로 도시되어 있다.1 is an exploded perspective view schematically showing the general structure of a pouch-type battery cell having an electrode assembly including a conventional negative electrode and a positive electrode built therein.

도 1을 참조하면, 파우치형 전지셀(10)은, 전극조립체(30), 전극조립체(30)로부터 연장되어 있는 전극 탭들(40, 50), 전극 탭들(40, 50)에 용접되어 있는 전극리드(60, 70), 및 전극조립체(30)를 수용하는 전지케이스(20)를 포함하는 것으로 구성되어 있다.Referring to FIG. 1 , the pouch-type battery cell 10 includes an electrode assembly 30 , electrode tabs 40 and 50 extending from the electrode assembly 30 , and electrodes welded to the electrode tabs 40 and 50 . It is configured to include a battery case 20 for accommodating the leads 60 and 70 and the electrode assembly 30 .

이러한 파우치형 전지셀은 보다 높은 용량의 전지를 형성하기 위해 상대적으로작은 크기의 파우치에 보다 많은 용량을 가지도록 전극과 전해질을 포함시켜야 하며, 이를 위하여 전지 용량이나 수용기능과 직접 관계가 없는 전지케이스의 주변 실링부를 점차 줄이도록 하는 요구가 발생한다.These pouch-type battery cells must include electrodes and electrolytes to have more capacity in a relatively small pouch in order to form a battery with a higher capacity, and for this purpose, a battery case that has no direct relationship with the battery capacity or accommodating function There is a demand to gradually reduce the peripheral sealing portion of the

이는 파우치형 전지셀의 실링부 폭을 줄이면 내부에 보다 큰 용량의 전극 조립체를 수용할 수 있고, 용량과 직접 관계없는 실링부 자체는 줄일 수 있기 때문이며, 이로 인해 실링부의 폭을 줄이게 되면 동일한 크기를 가지는 파우치형 전지셀 대비 높은 용량의 전지셀을 형성할 수 있으나, 실링부 폭의 감소로 인해 절대적 실링 면적이 줄어들면서 파우치형 전지셀의 밀봉 신뢰성이 떨어지게 되고, 외부로부터 수분이 침투되어 장기적인 보존 안정성이 떨어져 전지의 성능 저하로 이어지는 문제점이 있다.This is because, if the width of the sealing part of the pouch-type battery cell is reduced, the electrode assembly with a larger capacity can be accommodated inside, and the sealing part itself, which is not directly related to the capacity, can be reduced. The eggplant can form a battery cell with a higher capacity than a pouch-type battery cell, but as the absolute sealing area is reduced due to a decrease in the sealing width, the sealing reliability of the pouch-type battery cell is reduced, and moisture permeates from the outside, resulting in long-term storage stability There is a problem leading to deterioration of the performance of the battery.

그러나 종래의 파우치형 전지셀의 실링부를 실링하는 실링 장치의 경우에 실링부 전체 부위를 균일한 온도로 가열하지 못하고, 중앙 부위와 양측 부위가 각각 온도차가 발생하여 전지셀의 품질 및 안전이 저하되는 문제가 있다.However, in the case of a conventional sealing device for sealing the sealing portion of a pouch-type battery cell, the entire sealing portion cannot be heated to a uniform temperature, and a temperature difference occurs between the central portion and both sides, respectively, resulting in deterioration of battery cell quality and safety. there is a problem.

따라서, 상기와 같은 문제점들을 근본적으로 해결할 수 있는 기술에 대한 필요성이 매우 높은 실정이다.Therefore, the need for a technology capable of fundamentally solving the above problems is very high.

본 발명의 일 실시 예는 상기 종래 기술의 문제점을 극복하기 위하여 파우치형 전지셀의 실링부를 실링하는 실링 장치의 온도를 균일하게 제어하여 전지셀의 품질 및 안전성을 향상시킬 수 있는 전지셀 실링부 실링장치 및 그 이용 방법을 제공하고자 한다.In one embodiment of the present invention, in order to overcome the problems of the prior art, the battery cell sealing unit sealing unit capable of improving the quality and safety of the battery cell by uniformly controlling the temperature of the sealing device sealing the sealing unit of the pouch type battery cell An object of the present invention is to provide a device and a method for using the same.

본 발명의 일 측면에 따르면, 수지층과 금속층을 포함하는 라미네이트 시트의 전지케이스에 전극조립체가 장착되는 수납부의 외주면에 전지케이스의 열융착 실링부를 밀봉하기 위한 전지셀 실링부 실링장치로서, 히터에 의해 가열되는 히팅 블록; 상기 히팅 블록의 하부에 결합되어 상기 열융착 실링부를 실링하는 실링툴; 상기 히팅 블록을 가열하는 히터; 상기 히터에 복수 구간으로 분할되어 감겨있는 코일; 상기 히터에 의해 가열되는 상기 히팅 블록의 온도를 측정하도록 상기 히팅 블록에 상호 이격되어 있는 복수개의 온도 센서; 및 전지셀 실링부 실링장치의 작동을 제어하는 제어기; 를 포함하고, 상기 제어기는 상기 복수개의 온도 센서를 이용하여 상기 히팅 블록의 온도를 측정함으로써 상기 히팅 블록과 상기 실링툴의 온도를 균일하게 제어한다.According to one aspect of the present invention, as a battery cell sealing unit sealing device for sealing the heat-sealing sealing unit of the battery case to the outer circumferential surface of the receiving part in which the electrode assembly is mounted in the battery case of a laminate sheet including a resin layer and a metal layer, a heater a heating block heated by; a sealing tool coupled to a lower portion of the heating block to seal the heat-sealed sealing unit; a heater for heating the heating block; a coil wound around the heater divided into a plurality of sections; a plurality of temperature sensors spaced apart from each other in the heating block to measure the temperature of the heating block heated by the heater; and a controller for controlling the operation of the battery cell sealing unit sealing device; Including, the controller uniformly controls the temperature of the heating block and the sealing tool by measuring the temperature of the heating block using the plurality of temperature sensors.

상기 제어기는 상기 히터에 복수 구간으로 분할되어 감겨있는 코일의 작동을 개별 제어한다.The controller individually controls the operation of the coil wound around the heater divided into a plurality of sections.

상기 제어기는 상기 히터에 감겨있는 코일의 작동을 개별 제어하여 복수개의 구간 별로 온도 편차 발생을 방지한다.The controller individually controls the operation of the coil wound around the heater to prevent a temperature deviation for each section.

상기 제어기는 상기 히터에 감겨있는 코일의 작동을 개별 제어하는 복수개의 컨트롤러를 더 포함한다.The controller further includes a plurality of controllers for individually controlling the operation of the coil wound around the heater.

전지셀 실링부 실링장치의 이용 방법으로서, 전지케이스의 전극조립체 수납부에 전극조립체를 수납하는 단계, 히팅 블록과 실링툴이 히터로 가열되는 단계, 이격되어 있는 복수개의 온도 센서로 히팅 블록의 온도를 측정하는 단계, 온도 편차를 감소시키도록 히터에 구간 별로 감겨있는 코일의 작동을 개별 제어하는 단계, 및 전지케이스의 전극조립체 수납부의 실링부를 실링하는 단계를 포함한다.A method of using a battery cell sealing unit sealing device, comprising: accommodating an electrode assembly in an electrode assembly receiving unit of a battery case; heating a heating block and a sealing tool with a heater; temperature of the heating block with a plurality of spaced apart temperature sensors It includes the steps of measuring, individually controlling the operation of the coil wound on the heater for each section to reduce the temperature deviation, and sealing the sealing part of the electrode assembly accommodating part of the battery case.

본 발명에 따른 전지셀 실링부 실링장치 및 그 이용 방법은 다음과 같은 효과가 있다.The battery cell sealing unit sealing device and the method for using the same according to the present invention have the following effects.

첫째, 파우치형 전지셀의 실링부를 실링하는 실링 장치의 온도를 전체 영역에서 균일하게 제어할 수 있다.First, the temperature of the sealing device for sealing the sealing portion of the pouch-type battery cell can be uniformly controlled in the entire area.

둘째, 파우치형 전지셀의 실링부의 밀봉성을 향상시켜 실링부의 폭을 감소시킬 수 있어 전지셀의 용량 및 품질을 향상시킬 수 있다.Second, by improving the sealing property of the sealing part of the pouch-type battery cell, the width of the sealing part can be reduced, so that the capacity and quality of the battery cell can be improved.

셋째, 전체 영역에서 균일한 온도로 실링을 수행하게 됨으로써 불량 발생을 감소시켜 공정 효율성을 향상시키고 및 전해액 누출과 같은 품질 문제가 발생하지 않게 되어 전체 품질을 향상시킬 수 있다.Third, by performing sealing at a uniform temperature in the entire area, it is possible to reduce the occurrence of defects to improve process efficiency and to prevent quality problems such as electrolyte leakage, thereby improving overall quality.

도 1에는 종래의 음극 및 양극을 포함하는 전극조립체를 내장하고 있는 파우치형 전지셀의 일반적인 구조가 분해 사시도로서 모식적으로 도시되어 있다.
도 2는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 모식도이다.
도 3은 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 정면에서 바라본 모식도이다.
도 4는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 다른 모식도이다.
도 5는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 이용하여 측정된 온도 변화를 나타내는 그래프이다.
도 6의 (a)와 (b)는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 이용하여 측정된 온도 변화를 나타내는 다른 그래프이다.
도 7은 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 이용 방법을 나타내는 흐름도이다.
1 is an exploded perspective view schematically showing the general structure of a pouch-type battery cell having a built-in electrode assembly including a conventional negative electrode and a positive electrode.
2 is a schematic diagram of a battery cell sealing unit sealing device according to an embodiment of the present invention.
3 is a schematic view of a battery cell sealing unit sealing device according to an embodiment of the present invention as viewed from the front.
4 is another schematic diagram of a battery cell sealing unit sealing device according to an embodiment of the present invention.
5 is a graph showing a change in temperature measured using the battery cell sealing unit sealing device according to an embodiment of the present invention.
6 (a) and (b) are other graphs showing the temperature change measured using the battery cell sealing unit sealing device according to an embodiment of the present invention.
7 is a flowchart illustrating a method of using a battery cell sealing unit sealing device according to an embodiment of the present invention.

이하 설명하는 실시 예들은 본 발명의 기술 사상을 작업자가 용이하게 이해할 수 있도록 제공되는 것으로 이에 의해 본 발명이 한정되지는 않는다. 또한, 첨부된 도면에 표현된 사항들은 본 발명의 실시 예들을 쉽게 설명하기 위해 도식화된 도면으로 실제로 구현되는 형태와 상이할 수 있다.The embodiments to be described below are provided so that an operator can easily understand the technical idea of the present invention, and the present invention is not limited thereto. In addition, matters expressed in the accompanying drawings may be different from the forms actually implemented in the drawings schematically for easy explanation of the embodiments of the present invention.

어떤 구성요소가 다른 구성요소에 연결되어 있거나 접속되어 있다고 언급될 때에는, 그 다른 구성요소에 직접적으로 연결 또는 접속되어 있을 수도 있지만, 중간에 다른 구성요소가 존재할 수도 있다고 이해되어야 한다.It should be understood that when a component is referred to as being connected or connected to another component, it may be directly connected or connected to the other component, but another component may exist in between.

도 2는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 모식도이고, 도 3은 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 정면에서 바라본 모식도이며, 도 4는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 다른 모식도이다.2 is a schematic diagram of a battery cell sealing unit sealing device according to an embodiment of the present invention, FIG. 3 is a schematic view of the battery cell sealing unit sealing device according to an embodiment of the present invention as viewed from the front, FIG. 4 is It is another schematic diagram of a battery cell sealing unit sealing device according to an embodiment of the present invention.

본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치(100)는 수지층과 금속층을 포함하는 라미네이트 시트의 전지케이스에 전극조립체가 장착되는 수납부의 외주면에 전지케이스의 열융착 실링부를 밀봉하기 위한 전지셀 실링부 실링장치로서, 히터에 의해 가열되는 히팅 블록(110), 상기 히팅 블록(110)의 하부에 결합되어 상기 히팅 블록(110)으로부터 전달된 열로 상기 열융착 실링부를 실링하는 실링툴(120), 상기 히팅 블록(110)을 가열하는 봉 형상의 히터(130), 상기 히터(130)에 복수 구간으로 분할되어 감겨있는 코일(131, 132, 133), 상기 히터(130)에 의해 가열되는 상기 히팅 블록(110)의 온도를 측정하도록 상기 히팅 블록(110)에 상호 이격되어 있는 복수개의 온도 센서(140) 및 전지셀 실링부 실링장치(100)의 작동을 제어하는 제어기(150)를 포함하고, 상기 제어기(150)는 상기 복수개의 온도 센서(140)를 이용하여 상기 히팅 블록(110)의 온도를 측정함으로써 상기 히팅 블록(110)과 상기 실링툴(120)의 온도를 균일하게 제어하게 된다.The battery cell sealing unit sealing device 100 according to an embodiment of the present invention seals the heat-sealing sealing unit of the battery case on the outer circumferential surface of the receiving unit in which the electrode assembly is mounted in the battery case of a laminate sheet including a resin layer and a metal layer. As a sealing device for sealing a battery cell for Tool 120 , a bar-shaped heater 130 for heating the heating block 110 , coils 131 , 132 , 133 that are divided into a plurality of sections and wound around the heater 130 , and the heater 130 . A controller 150 for controlling the operation of a plurality of temperature sensors 140 and the battery cell sealing unit sealing device 100 spaced apart from each other to measure the temperature of the heating block 110 heated by ), and the controller 150 measures the temperature of the heating block 110 using the plurality of temperature sensors 140 to uniformly control the temperature of the heating block 110 and the sealing tool 120 . will be in control

본 발명에 따르면 상기 히터(130)는 측면을 기준으로 상기 히팅 블록(110)에 평행하게 결합되어 있다.According to the present invention, the heater 130 is coupled in parallel to the heating block 110 with respect to the side.

또한 본 발명에 따른 온도 센서(140)는 상기 히터(130)에 의해 가열되는 상기 히팅 블록(110)의 전체 온도를 균일하게 측정하도록 상기 히팅 블록(110)에 상호 이격되어 있다.In addition, the temperature sensor 140 according to the present invention is spaced apart from each other in the heating block 110 to uniformly measure the entire temperature of the heating block 110 heated by the heater 130 .

하나의 구체적인 예에서 온도 센서(140)는 상기 히팅 블록(110)의 일측에 밀착되어 있고 제 1 온도 센서(141), 제 2 온도 센서(142) 및 제 3 온도 센서(143)를 포함하여 구성되어 있다.In one specific example, the temperature sensor 140 is in close contact with one side of the heating block 110 and includes a first temperature sensor 141 , a second temperature sensor 142 and a third temperature sensor 143 . has been

또한 본 발명에 따른 제어기(150)는 상기 온도 센서(140)에 의해 측정된 온도에 따라 상기 코일(131, 132, 133)의 작동을 개별 제어하여 히팅 블록(110)과 실링툴(120)의 온도 편차 발생을 방지하도록 되어 있다.In addition, the controller 150 according to the present invention individually controls the operation of the coils 131 , 132 , and 133 according to the temperature measured by the temperature sensor 140 , so that the heating block 110 and the sealing tool 120 are operated. It is designed to prevent the occurrence of temperature deviation.

즉 상기 제어기(150)는 상기 히터(130)에 복수 구간으로 분할되어 감겨있는 코일(131, 132, 133)의 작동을 개별 제어하여 복수개의 구간 별로 온도 편차 발생을 방지하도록 되어 있다.That is, the controller 150 is configured to individually control the operation of the coils 131 , 132 , and 133 that are divided into a plurality of sections and wound around the heater 130 to prevent temperature deviations for each section.

여기서 상기 복수개의 코일(131, 132, 133)은 각각 발열 코일로서, 상기 히터(130)에 3개 구간, 즉 좌측 구간, 중앙 구간 및 우측 구간으로 분할되어 발열이 각각 개별 제어되도록 감겨있다.Here, each of the plurality of coils 131 , 132 , and 133 is a heating coil, and is divided into three sections, ie, a left section, a center section, and a right section, on the heater 130 so that heat is individually controlled.

또한 상기 제어기(150)는 코일(131, 132, 133)의 작동을 개별 제어하는 컨트롤러에 연결될 수 있고, 이에 따라 코일(131, 132, 133)을 각각 제어하도록 연결되어 있는 복수개의 컨트롤러가 제어기(150)와 연결되도록 구성될 수 있다.In addition, the controller 150 may be connected to a controller that individually controls the operation of the coils 131, 132, and 133, and accordingly, a plurality of controllers connected to control the coils 131, 132, and 133, respectively, are connected to the controller ( 150) and may be configured to be connected.

도 5는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 이용하여 측정된 온도 변화를 나타내는 그래프이다.5 is a graph showing a change in temperature measured using the battery cell sealing unit sealing device according to an embodiment of the present invention.

도 5를 도 2 내지 도 4와 함께 참조하면 X축은 시간이고, Y축은 온도로서 시간 경과에 따른 중앙과 측면 부위의 온도 변화를 나타내고 있다.Referring to FIG. 5 together with FIGS. 2 to 4 , the X-axis is time, and the Y-axis is temperature, indicating the temperature change of the central and side parts over time.

시간이 경과하면서 히팅 블록(110)의 중앙 부위와 측면 부위의 온도차가 발생하는데, 30분이 경과한 후에 히팅 블록(110)의 중앙 부위의 온도는 205.5℃이고, 히팅 블록(110)의 측면 부위의 온도는 198.9℃이다.As time passes, a temperature difference between the central portion and the side portion of the heating block 110 occurs, and after 30 minutes have elapsed, the temperature of the central portion of the heating block 110 is 205.5° C., and the side portion of the heating block 110 is The temperature is 198.9°C.

따라서 히팅 블록(110)의 중앙 부위와 측면 부위의 온도차는 6.6℃이며, 중앙과 측면의 온도 편차는 ±3℃ 이내에서 관리가 가능한 것을 알 수 있다.Therefore, it can be seen that the temperature difference between the central portion and the side portion of the heating block 110 is 6.6°C, and the temperature deviation between the center and the side surface can be managed within ±3°C.

도 6의 (a)와 (b)는 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치를 이용하여 측정된 온도 변화를 나타내는 다른 그래프이다.6 (a) and (b) are other graphs showing the temperature change measured using the battery cell sealing unit sealing device according to an embodiment of the present invention.

도 6을 도 2 내지 도 4와 함께 참조하면 X축은 시간이고, Y축은 온도로서 시간 경과에 따른 온도 포화(Saturation)시 히팅 블록(110)의 중앙 부위와 양측 부위의 온도 변화를 나타내고 있다.Referring to FIG. 6 together with FIGS. 2 to 4 , the X-axis is time, and the Y-axis is temperature, indicating the temperature change of the central portion and both sides of the heating block 110 during temperature saturation over time.

먼저 도 6의 (a)에서는 170℃에서 180℃로 온도 10℃ 승온시에 히팅 블록(110)의 중앙 부위와 측면 부위의 온도차가 ±3℃ 이내에서 관리가 가능하고, 다음으로 도 6의 (b)에서는 180℃에서 190℃로 온도 10℃ 승온시에도 히팅 블록(110)의 중앙 부위와 측면 부위의 온도차가 ±3℃ 이내에서 관리가 가능한 것을 알 수 있다.First, in FIG. 6 (a), the temperature difference between the central portion and the side portion of the heating block 110 can be managed within ±3° C. when the temperature is raised from 170° C. to 180° C. by 10° C. In b), it can be seen that the temperature difference between the central portion and the side portion of the heating block 110 can be managed within ±3°C even when the temperature is increased from 180°C to 190°C by 10°C.

도 7은 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 이용 방법을 나타내는 흐름도이다.7 is a flowchart illustrating a method of using a battery cell sealing unit sealing device according to an embodiment of the present invention.

도 7을 도 2 내지 도 4와 함께 참조하면 본 발명의 하나의 실시 예에 따른 전지셀 실링부 실링장치의 이용 방법으로서, 먼저 전지케이스의 전극조립체 수납부에 전극조립체를 수납한다(S110). 이와 동시에 히팅 블록과 실링툴은 히터를 이용하여 설정 온도로 가열되도록 하여 전지케이스의 실링 부위가 실링되도록 준비한다(S120).Referring to FIG. 7 together with FIGS. 2 to 4 , as a method of using the battery cell sealing unit sealing device according to an embodiment of the present invention, first, the electrode assembly is accommodated in the electrode assembly receiving unit of the battery case (S110). At the same time, the heating block and the sealing tool are heated to a set temperature using a heater to prepare the sealing portion of the battery case to be sealed (S120).

히팅 블록과 실링툴을 가열하는 과정에서 이격되어 있는 복수개의 온도 센서로 히팅 블록의 중앙 부위와 양측 부위의 온도를 측정하고(S130), 히팅 블록의 중앙 부위와 양측 부위의 온도 편차를 감소시키도록 히터에 구간 별로 감겨있는 복수개의 코일의 작동을 개별 제어한다(S140). 즉 설정 온도보다 낮아지는 부위의 히터에 감겨있는 코일은 가열하고 설정 온도보다 높아지는 부위의 히터에 감겨있는 코일의 작동은 중지시켜 전체 부위의 온도를 균일하게 한다.In the process of heating the heating block and the sealing tool, the temperature of the central and both sides of the heating block is measured with a plurality of temperature sensors spaced apart (S130), and the temperature difference between the central and both sides of the heating block is reduced. The operation of the plurality of coils wound on the heater for each section is individually controlled (S140). That is, the coil wound around the heater of the lower part than the set temperature is heated, and the operation of the coil wound around the heater higher than the set temperature is stopped to make the temperature of the entire part uniform.

계속해서 전극조립체를 수납한 전지케이스의 실링 예정부위를 가열된 전지셀 실링부 실링장치의 실링툴에 밀착시켜 설정 시간 동안 실링한다(S150).Subsequently, the sealing scheduled portion of the battery case housing the electrode assembly is brought into close contact with the sealing tool of the heated battery cell sealing unit sealing device to seal for a set time (S150).

따라서 본 발명에 따른 전지셀 실링부 실링장치 및 그 이용 방법은 파우치형 전지셀의 실링부를 실링하는 실링 장치의 온도를 균일하게 제어할 수 있고, 파우치형 전지셀의 실링부의 밀봉성을 향상시켜 전지셀의 용량 및 품질을 향상시킬 수 있으며, 이에 따라 불량 발생을 감소시켜 공정 효율성 및 품질을 향상시키는 효과가 있다.Therefore, the battery cell sealing unit sealing device and the method for using the same according to the present invention can uniformly control the temperature of the sealing device sealing the sealing unit of the pouch-type battery cell, and improve the sealing property of the sealing unit of the pouch-type battery cell to improve the battery It is possible to improve the capacity and quality of the cell, thereby reducing the occurrence of defects has the effect of improving process efficiency and quality.

본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명이 그 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시 예들은 여러 가지 실시 가능한 예 중에서 작업자의 이해를 돕기 위하여 가장 바람직한 실시 예를 선정하여 제시한 것일 뿐, 이 발명의 기술적 사상이 반드시 제시된 실시 예에만 의해서 한정되거나 제한되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 변화와 부가 및 변경이 가능함은 물론, 균등한 타의 실시 예가 가능함을 밝혀둔다.Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, the embodiments described above are only presented by selecting and presenting the most preferred embodiments to help the operator understand among various possible embodiments, and the technical spirit of the present invention is not necessarily limited or limited only by the presented embodiments. , it is revealed that various changes, additions, and changes are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments are possible.

100: 전지셀 실링부 실링장치
110: 히팅 블록
120: 실링툴
130: 히터
131, 132, 133: 코일
140: 온도 센서
141: 제 1 온도 센서
142: 제 2 온도 센서
143: 제 3 온도 센서
150: 제어기
100: battery cell sealing unit sealing device
110: heating block
120: sealing tool
130: heater
131, 132, 133: coil
140: temperature sensor
141: first temperature sensor
142: second temperature sensor
143: third temperature sensor
150: controller

Claims (5)

수지층과 금속층을 포함하는 라미네이트 시트의 전지케이스에 전극조립체가 장착되는 수납부의 외주면에 전지케이스의 열융착 실링부를 실링하기 위한 전지셀 실링부 실링장치로서,
히터에 의해 가열되는 히팅 블록;
상기 히팅 블록의 하부에 결합되어 상기 열융착 실링부를 실링하는 실링툴;
상기 히팅 블록을 가열하는 히터;
상기 히터에 복수 구간으로 분할되어 감겨있는 코일;
상기 히터에 의해 가열되는 상기 히팅 블록의 온도를 측정하도록 상기 히팅 블록에 상호 이격되어 있는 복수개의 온도 센서; 및
전지셀 실링부 실링장치의 작동을 제어하는 제어기; 를 포함하고,
상기 제어기는 상기 복수개의 온도 센서를 이용하여 상기 히팅 블록의 온도를 측정함으로써 상기 히팅 블록과 상기 실링툴의 온도를 균일하게 제어하는 것을 특징으로 하는
전지셀 실링부 실링장치.
As a battery cell sealing unit sealing device for sealing the heat-sealing sealing unit of the battery case to the outer circumferential surface of the accommodating part in which the electrode assembly is mounted in the battery case of a laminate sheet including a resin layer and a metal layer,
a heating block heated by a heater;
a sealing tool coupled to a lower portion of the heating block to seal the heat-sealed sealing unit;
a heater for heating the heating block;
a coil wound around the heater divided into a plurality of sections;
a plurality of temperature sensors spaced apart from each other in the heating block to measure the temperature of the heating block heated by the heater; and
a controller for controlling the operation of the battery cell sealing unit sealing device; including,
The controller is characterized in that by measuring the temperature of the heating block using the plurality of temperature sensors to uniformly control the temperature of the heating block and the sealing tool
Battery cell sealing unit sealing device.
제 1 항에 있어서,
상기 제어기는 상기 히터에 복수 구간으로 분할되어 감겨있는 코일의 작동을 개별 제어하는 것을 특징으로 하는
전지셀 실링부 실링장치.
The method of claim 1,
wherein the controller individually controls the operation of the coil wound around the heater divided into a plurality of sections
Battery cell sealing unit sealing device.
제 2 항에 있어서,
상기 제어기는 상기 히터에 감겨있는 코일의 작동을 개별 제어하여 복수개의 구간 별로 온도 편차 발생을 방지하는 것을 특징으로 하는
전지셀 실링부 실링장치.
3. The method of claim 2,
The controller individually controls the operation of the coil wound around the heater to prevent the occurrence of temperature deviation for each section
Battery cell sealing unit sealing device.
제 1 항에 있어서,
상기 제어기는 상기 히터에 감겨있는 코일의 작동을 개별 제어하는 복수개의 컨트롤러를 더 포함하는 것을 특징으로 하는
전지셀 실링부 실링장치.
The method of claim 1,
The controller further comprises a plurality of controllers for individually controlling the operation of the coil wound around the heater
Battery cell sealing unit sealing device.
전지셀 실링부 실링장치의 이용 방법으로서,
전지케이스의 전극조립체 수납부에 전극조립체를 수납하는 단계,
히팅 블록과 실링툴이 히터로 가열되는 단계,
이격되어 있는 복수개의 온도 센서로 히팅 블록의 온도를 측정하는 단계,
온도 편차를 감소시키도록 히터에 구간 별로 감겨있는 코일의 작동을 개별 제어하는 단계, 및
전지케이스의 전극조립체 수납부의 실링부를 실링하는 단계, 를 포함하는 것을 특징으로 하는
이용 방법.
As a method of using the battery cell sealing unit sealing device,
accommodating the electrode assembly in the electrode assembly accommodating part of the battery case;
heating the heating block and the sealing tool with a heater;
Measuring the temperature of the heating block with a plurality of spaced apart temperature sensors,
individually controlling the operation of the coil wound on the heater for each section to reduce the temperature deviation, and
Sealing the sealing part of the electrode assembly accommodating part of the battery case, characterized in that it comprises a
How to use.
KR1020200091614A 2020-07-23 2020-07-23 Sealing apparatus for sealing part of battery cell KR102364600B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2719913B2 (en) * 1987-07-11 1998-02-25 日本アジャックス・マグネサ−ミック株式会社 Induction heating furnace
JP2000277893A (en) * 1999-03-23 2000-10-06 Seiko Epson Corp Head for thermocompression bonding, and thermocompression bonding apparatus provided with the same
JP2005235653A (en) * 2004-02-20 2005-09-02 Daido Steel Co Ltd Induction heating method and device
JP2016103467A (en) * 2014-10-29 2016-06-02 ザ・ボーイング・カンパニーThe Boeing Company Induction heating coil for uniform heating
KR101762807B1 (en) * 2016-01-28 2017-07-28 주식회사 탑앤씨 Pouch Film Sealing Apparatus for Secondary Battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2719913B2 (en) * 1987-07-11 1998-02-25 日本アジャックス・マグネサ−ミック株式会社 Induction heating furnace
JP2000277893A (en) * 1999-03-23 2000-10-06 Seiko Epson Corp Head for thermocompression bonding, and thermocompression bonding apparatus provided with the same
JP2005235653A (en) * 2004-02-20 2005-09-02 Daido Steel Co Ltd Induction heating method and device
JP2016103467A (en) * 2014-10-29 2016-06-02 ザ・ボーイング・カンパニーThe Boeing Company Induction heating coil for uniform heating
KR101762807B1 (en) * 2016-01-28 2017-07-28 주식회사 탑앤씨 Pouch Film Sealing Apparatus for Secondary Battery

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