CN113767511B - 用于抑制电极组件的变形的锂二次电池外壳 - Google Patents

用于抑制电极组件的变形的锂二次电池外壳 Download PDF

Info

Publication number
CN113767511B
CN113767511B CN202080032621.1A CN202080032621A CN113767511B CN 113767511 B CN113767511 B CN 113767511B CN 202080032621 A CN202080032621 A CN 202080032621A CN 113767511 B CN113767511 B CN 113767511B
Authority
CN
China
Prior art keywords
region
battery case
barrier layer
electrode assembly
activation process
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.)
Active
Application number
CN202080032621.1A
Other languages
English (en)
Other versions
CN113767511A (zh
Inventor
俞成勋
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.)
LG Energy Solution Ltd
Original Assignee
LG Energy Solution 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=75620098&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN113767511(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by LG Energy Solution Ltd filed Critical LG Energy Solution Ltd
Priority to CN202311422872.2A priority Critical patent/CN117578008A/zh
Publication of CN113767511A publication Critical patent/CN113767511A/zh
Application granted granted Critical
Publication of CN113767511B publication Critical patent/CN113767511B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • 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
    • H01M50/121—Organic material
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/394—Gas-pervious parts or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • H01M10/049—Processes for forming or storing electrodes in the battery container
    • 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
    • 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
    • H01M10/058—Construction or manufacture
    • 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
    • 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
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
    • 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
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/10—Batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本发明涉及一种锂二次电池外壳，该锂二次电池外壳由包括外层/屏障层/内层结构的层压片材构成，该外壳包括：第一区域，该第一区域是气体较容易排出或膨胀相对较好的区域；以及第二区域，该第二区域是除第一区域之外的其余区域，其中，形成第一区域的层压片材不包括屏障层或者包括具有狭缝的屏障层。

Description

用于抑制电极组件的变形的锂二次电池外壳
技术领域
本申请要求基于2019年10月23日提交的韩国专利申请No.10-2019-0132219的优先权的权益，并且该韩国专利申请的全部内容通过引用被并入本文中。
本发明涉及一种用于锂二次电池的电池外壳以及一种用于在激活过程期间抑制电极组件的变形的袋型电池外壳。
背景技术
随着技术的发展和对移动设备的需求的增长，对作为能量源的二次电池的需求正在迅速增长，并且在这样的二次电池之中，已经对具有高能量密度和放电电压的锂二次电池进行了许多研究，并且已经将其商业化并广泛使用。
锂二次电池根据其外观被大致分类为圆柱形电池、棱柱形电池和袋型电池，并且取决于电解质溶液的类型也被分类为锂离子电池、锂离子聚合物电池和锂聚合物电池。
由于移动设备的小型化的最新趋势，对更薄的方形电池和袋型电池的需求正在增长，并且特别地，形状容易改变、制造便宜且重量轻的袋型电池引起了高度关注。
通常，袋型电池是指电极组件和电解质溶液被密封在包括树脂层和金属层的层压片材的袋型外壳的内部的电池。被容纳在电池外壳中的电极组件具有果冻卷型(卷绕型)、堆叠型、或复杂型(堆叠/折叠型)的结构。袋型二次电池通过如下方式来制造：形成用于将电极组件安装在层压片材上的接收部，并且在将电极组件附接到接收部的状态下对与该片材分离的单独片材或从其延伸的片材进行热熔合。
图1是袋型二次电池的层压片材的截面视图。参考图1，层压片材20具有外层21、屏障层22和内层23被顺序地堆叠的结构，外层21起到保护电池免受外部影响的作用，屏障层22具有防止异物(诸如气体和湿气)的流入或泄漏的功能并且具有提高电池外壳的强度的功能，并且内层23具有当密封电池外壳时能够热熔合的功能。
图2是传统电池单体的前视图，在该传统电池单体中，电极组件被容纳在层压片材的袋中，并完成了密封过程，并且图3是图2的电池单体的侧视图。参考这些附图，电池外壳10包括：接收部11，电极组件1被容纳在该接收部11中；密封单元13，该密封单元13通过将层压片材热密封而形成；以及气袋单元12，该气袋单元12作为除接收部之外的自由空间能够收集在激活过程期间生成的气体。然而，在激活过程期间，如图3所示，生成了内部气体。由于气体和湿气等难以渗透到构成电池外壳的层压片材的屏障层中，并且屏障层具有小的膨胀率，因此存在电极组件可能因收集在电池外壳中的气体而膨胀或变形的问题。在激活过程之后，气袋被冲孔以排出内部气体，但是在执行脱气过程之前生成的内部气体会引起与上述相同的问题。
另外，为了在激活过程期间传送电池单体，应使用传送构件(诸如夹钳)来拾取电池单体。当电池外壳的内部由于气体而隆起时，如图4所示，在使用夹钳拾取电池单体的过程中存在困难。
因此，需要开发一种用于电池外壳的技术，其在抑制由在激活过程期间生成的气体引起的电极组件的变形的同时有助于后续过程的电池单体的运输。
发明内容
【技术问题】
本发明的目的是提供一种电池外壳，该电池外壳能够在脱气过程之前抑制在激活过程中生成的气体使电极组件变形的现象。
另外，本发明的目的是提供如下形式的电池单体，在该形式中，在激活过程期间生成的气体容易排出，或者气袋单元膨胀，使得传送构件容易执行拾取。
【技术方案】
用于解决上述问题的本发明的电池外壳是用于锂二次电池的电池外壳，该电池外壳由包括外层/屏障层/内层结构的层压片材制成，并且该电池外壳包括：第一区域，该第一区域是气体容易排出或相对容易膨胀的区域；以及第二区域，该第二区域是除第一区域之外的其余区域，其中，构成第一区域的层压片材不包括屏障层或者包括形成有狭缝的屏障层。
根据本发明实施例的电池外壳包括：接收部，电极组件被容纳在该接收部中；以及气袋单元，在激活过程中生成的气体被收集在该气袋单元中，并且第一区域被形成在该气体袋单元中。
在本发明的实施例中，屏障层是铝或铝合金的。
在本发明的实施例中，构成第一区域的层压片材不包含屏障层。
此时，在第一区域中的层压片材的外层可以是：
选自由聚酰胺、聚酯、聚乙烯、聚丙烯(PP)和环烯烃共聚物(COC)构成的组中的一种或多种，或
选自由低密度聚乙烯(LDPE)、高密度聚乙烯(HDPE)、聚丙烯(PP)、双向拉伸聚丙烯(BOPP)和环烯烃共聚物(COC)构成的组中的一种或多种。
在本发明的实施例中，构成第一区域的层压片材包括具有形成在其上的狭缝的屏障层。此时，在第一区域中的层压片材的内层和外层中的每一层上均可以未形成狭缝。
在本发明的实施例中，第一区域被形成在气袋单元的一端与接收部相接的边界与气袋单元的另一端之间的位置处。
在本发明的实施例中，内层是聚丙烯或聚乙烯。
根据本发明的用于制造二次电池的方法包括：将电极组件接收在电池外壳中并注入电解质溶液的步骤；以及在电池外壳已经被密封或临时密封的状态下执行激活过程的步骤。
此外，根据本发明的用于制造二次电池的方法还可以包括：在激活过程之后的通过在气袋部中钻出至少一个通孔来执行排出内部气体的脱气过程的步骤。
【有益效果】
在根据本发明的电池外壳中，构成气袋单元的层压片材的局部区域不包含阻挡气体和湿气的屏障层，或者由于仅在屏障层中形成狭缝，所以电池外壳内部的气体容易通过该区域排出，或者由于与其他区域相比，该区域具有相对优异的膨胀性，所以在激活过程期间生成的气体移动到该区域。这样，具有防止电极组件因内部气体而变形的效果。
另外，在根据本发明的电池外壳中，由于在激活过程期间生成的气体被排出，所以在激活过程期间降低了气袋单元因内部气体而隆起的程度，使得使用传送构件容易拾取电池单体，从而提高该过程中的工作效率。
附图说明
图1是构成袋型二次电池的外壳的普通层压片材的截面视图。
图2是电池单体的前视图，其中，电极组件被插入传统电池外壳中，并且电解质溶液被注入并密封。
图3是图2的电池单体的侧视图，其示出了在激活过程之前/之后的状态。
图4是示出了拾取图2的电池单体的方式的视图。
图5是根据本发明的实施例的电池单体的前视图，其中，电极组件被插入电池外壳中，并且电解质溶液被注入并密封。
图6是图5的电池单体的侧视图，其示出了在激活过程之前/之后的状态。
图7是示出了拾取图5的电池单体的方式的视图。
图8是根据本发明的另一个实施例的电池单体的侧视图，其中，电极组件被插入电池外壳中，并且电解质溶液被注入并密封，其示出了在激活过程之前/之后的状态。
图9是根据本发明的又一个实施例的电池单体的侧视图，其中，电极组件被插入电池外壳中，并且电解质溶液被注入并密封，其示出了在激活过程之前/之后的状态。
图10至图12是示出了根据本发明的各种实施例的电池外壳的视图。
具体实施方式
在本申请中，应当理解，诸如“包括”或“具有”的术语旨在指示在说明书中描述了特征、数量、步骤、操作、部件、零件或其组合，并且它们并不预先排除存在或添加一个或多个其他特征或数量、步骤、操作、部件、零件或其组合的可能性。
在下文中，将详细描述本发明。
本发明提供了一种用于锂二次电池的电池外壳，该电池外壳由包括外层/屏障层/内层结构的层压片材制成，并且该电池外壳包括：第一区域，该第一区域是气体容易排出或相对容易膨胀的区域；以及第二区域，该第二区域是除第一区域之外的其余区域，其中，构成第一区域的层压片材不包括屏障层或包括形成有狭缝的屏障层。
锂二次电池的制造过程包括：将电极组件插入由层压片材制成的电池外壳中；注入电解质溶液；以及将其密封以执行激活过程。在激活过程期间，由于电解质溶液与电极之间的化学反应和副反应而生成大量气体，并且通过脱气过程的单独过程排出这些气体。因此，在激活过程开始之后并且在执行脱气过程之前，内部气体被填充在电池外壳的内部，这可能导致电极组件隆起或变形。这是因为用作电池外壳的层压片材包含由难以渗透空气或水蒸气的金属材料制成的屏障层。因此，在激活过程期间生成的内部气体被屏障层相对于外部阻挡并且不能被排放，并且由于其被收集在电池外壳的内部，所以电池外壳像气球一样隆起。
因此，本发明被设计成允许在激活过程期间生成的内部气体容易被排出或允许内部气体容易被收集在气袋单元中而不是在接收部中。
本发明的电池外壳的特征在于，与构成其他区域的层压片材不同，构成其局部区域的层压片材不包含屏障层，或者包括形成有狭缝的屏障层。传统层压片材具有由金属材料制成的屏障层，以提供防止异物(诸如气体和湿气)的流入或泄漏的功能以及提高电池外壳的强度的功能。然而，由于这种屏障层，在激活过程期间生成的气体不能被排出，并且电池外壳的内部被填充。这样，在本发明的电池外壳中，作为局部区域的第一区域由允许气体容易排出或相对充分膨胀的层压片材构成，并且作为除第一区域之外的其余区域的第二区域由传统层压片材构成。
图5是根据本发明的实施例的电池外壳100的前视图。参考图5，电池外壳100包括：接收部110，正电极/分隔件/负电极结构的电极组件1被容纳在该接收部110中；气袋单元120，该气袋单元120被设置在接收部的上方，以收集在激活过程期间生成的气体；以及密封单元130，该密封单元130用于密封电池外壳的内部，并且气袋120的一部分包括第一区域121，该第一区域121是气体容易排出或相对容易膨胀的区域。第一区域可以具有预定宽度，并且可以在与电池外壳的密封单元130平行的方向上延伸。
图10示出了根据本发明的又一个实施例的第一区域的形状。参考图10，在气袋单元120上具有多个矩形形状的第一区域121可以具有在与密封单元130平行的方向上排成一行的形状。
优选地，第一区域121被形成在接收部110与气袋单元120的一端邻接的边界与气袋单元的另一端之间。这是因为，如果大量的电解质溶液被容纳在容纳有电极组件的接收部中，则电解质溶液可能泄漏，并且在构成接收部的层压片材中没有屏障层。
可以根据构成层压片材的内/外层材料的透气性以及电极组件和电解质溶液的化学性质来适当地选择第一区域所占据的面积。具体地，基于气袋单元的面积，第一区域所占据的面积可以为5％至50％，但是不限于此。
构成第一区域的层压片材不包含屏障层或者包括形成有狭缝的屏障层，从而有助于从第一区域排出气体或允许相对良好的膨胀。与包括屏障层的层压片材相比，不包括屏障层的层压片材具有优秀的透气性和透湿性，使得可以容易地排出气体。在屏障层中形成有狭缝的层压片材中，即使包括屏障层，也可以通过屏障层的狭缝排出气体，使得可以容易地排出气体。
将详细描述构成第一区域的层压片材。
构成第一区域的层压片材的第一实施例不包括屏障层，并且外层和内层的材料与传统层压片材相同。
在第一实施例中，由于构成第一区域的层压片材的外层应具有对外部环境的优异耐受性以保护电池免受外部影响，所以与厚度相比，要求优异的拉伸强度和耐候性。例如，可以使用聚酰胺树脂(诸如尼龙)、聚酯树脂(诸如聚对苯二甲酸乙二醇酯(PET)、聚对苯二甲酸丁二醇酯(PBT)和聚萘二甲酸乙二醇酯(PEN))、聚烯烃树脂(诸如聚乙烯(PE)和聚丙烯(PP))、聚苯乙烯树脂(诸如聚苯乙烯)、聚氯乙烯树脂、聚偏二氯乙烯树脂等。这些材料可以单独使用或者以两种或更多种组合使用。
在第一实施例中，构成第一区域的层压片材的内层在电池外壳的临时密封或密封期间起到热熔合的作用。由于可以在100℃至200℃的温度下执行热熔合，所以内层材料由具有在该温度范围内的熔点的材料制成。另外，由于内层用于确保绝缘，所以其具有低吸湿性以抑制电解质溶液的侵入，并且不应被电解质溶液膨胀或侵蚀。这种内层材料的优选示例包括聚乙烯、聚乙烯丙烯酸、未拉伸的聚丙烯、聚酰胺、聚酰胺酰亚胺、聚酰亚胺及其混合物或共聚物，但不限于此。
在第一实施例中，构成第一区域的层压片材不包括屏障层，并且仅由外层和内层构成，并且如上所述，该外层和内层的材料是聚合物材料。这样，与传统层压片材相比，材料的可膨胀性提高。因此，在激活过程期间生成的内部气体自然地从由于屏障层而未膨胀的接收部移动到具有良好膨胀性的第一区域。图8从根据本发明的第一实施例的电池单体的将电极组件1插入电池外壳中的一侧示出了在激活过程之前/之后的状态，并且注入并密封电解质溶液。参考图8，由于去除了屏障层，所以与构成除第一区域之外的其余区域的层压片材相比，构成第一区域121的层压片材具有相对优异的膨胀性。因此，在激活过程期间生成的气体趋向于移动到充分膨胀的第一区域121。因此，大部分内部气体被收集在位于气袋单元120上的第一区域121中以使第一区域的层压片材膨胀，并且仅少量气体残留在电池单体接收部110中。因此，电池单体接收部110的体积膨胀率减小，使得夹钳在后续过程中更容易拾取电池单体。
构成本发明的第一区域的层压片材的第二实施例不包括屏障层，并且由与传统层压片材的外层材料相比具有更优异的透气性的外层材料构成。图6从根据第二实施例的电池单体的将电极组件1插入电池外壳中的一侧示出了在激活过程之前和之后的状态，并且注入并密封电解质溶液。参考图6，构成第一区域121的层压片材与第一实施例的相同之处在于其不包括屏障层，但是与第一实施例的不同之处在于构成第一区域121的层压片材的外层由允许气体充分通过并阻挡湿气的材料制成。
使气体充分通过但阻挡湿气的外层材料的具体示例是选自由低密度聚乙烯(LDPE)、高密度聚乙烯(HDPE)、聚丙烯(PP)、双向拉伸聚丙烯(BOPP)和环烯烃共聚物(COC)构成的组中的一种或两种或更多种。在构成第一区域的层压片材的外层由聚合物材料制成的情况下，与普通外层材料相比，其具有优异的阻挡湿气性能。这样，可以将第一区域的阻挡湿气性能维持在与包括屏障层的层压片材的阻挡湿气性能相似或略低的水平。
参考图6，在构成第一区域121的层压片材中，去除了屏障层，并且气体在外层的材料中充分通过，使得在激活过程期间生成的内部气体(a)通过第一区域被充分排出。因此，电池单体接收部110不会因内部气体而膨胀。因此，如图7所示，电池单体的拾取变得容易。
构成本发明的第一区域的层压片材的第三实施例包括形成有狭缝的屏障层。在这种情况下，优选地，仅在屏障层中形成有狭缝，并且在外层和内层中不形成狭缝。这是因为如果在外层和内层中形成狭缝，则在激活过程期间电解质溶液可能泄漏并且对电池性能产生负面影响。图9从根据第三实施例的电池单体的将电极组件1插入电池外壳中的一侧示出了在激活过程之前和之后的状态，并且注入并密封电解质溶液。参考图9，构成第一区域121的层压片材不包括屏障层，并且外层由具有良好透气性的材料制成，使得容易排出气体，并且在激活期间生成的内部气体(a)通过第一区域被充分排出。
图11至图12示出了根据第三实施例的各种类型的狭缝。根据第三实施例的屏障层的狭缝可以如图11所示以直线形状形成在气袋单元120中，并且可以以如图12所示的十字形状形成。
在下文中，将描述构成本发明的电池外壳中的第二区域的层压片材。在本发明中，第二区域是指除第一区域之外的其余区域。构成第二区域的层压片材不同于第一区域的层压片材，并且可以使用传统层压片材。
典型的层压片材可以包括外层/屏障层/内层结构。由于外层应具有对外部环境的优异耐受性以保护电池免受外部影响，所以需要优异的拉伸强度和耐候性。例如，可以使用聚酰胺树脂(诸如尼龙)、聚酯树脂(诸如聚对苯二甲酸乙二醇酯(PET)、聚对苯二甲酸丁二醇酯(PBT)和聚萘二甲酸乙二醇酯(PEN))、聚烯烃树脂(诸如聚乙烯(PE)和聚丙烯(PP))、聚苯乙烯树脂(诸如聚苯乙烯)、聚氯乙烯树脂、聚偏二氯乙烯树脂等。这些材料可以单独使用或者以两种或更多种组合使用。
屏障层可以由铝或铝合金制成，以除了防止异物(诸如气体和湿气)的流入或泄漏的功能之外还表现出提高电池外壳的强度的功能，并且这些材料可以单独使用或者以两种或更多种组合使用。
内层起到在电池外壳的临时密封或密封期间热熔合的作用。由于可以在100℃至200℃的温度下执行热熔合，所以内层材料由具有在该温度范围内的熔点的材料制成。另外，由于内层用于确保绝缘，所以其具有低吸湿性以抑制电解质溶液的侵入，并且不应被电解质溶液膨胀或侵蚀。这种内层材料的优选示例包括聚乙烯、聚乙烯丙烯酸、未拉伸的聚丙烯、聚酰胺、聚酰胺酰亚胺、聚酰亚胺及其混合物或共聚物，但不限于此。
通常，聚烯烃类树脂(诸如聚丙烯)对金属的粘合力低，因此，为了提高粘合力，可以化学地和/或物理地处理屏障层的面对内层的表面，使得可以形成多个不规则部。可以通过例如在屏障层的表面上执行喷砂或化学蚀刻来形成这种不规则部，并且期望通过确保较宽的表面积来提高粘合力。不规则部的尺寸不受特别限制，但优选为10μm至100μm，以在层之间提供高的结合力。
层压片材可以具有进一步包括在外层与屏障层之间和/或在屏障层与内层之间的粘合层的结构。粘合层用于补充屏障层与外层以及屏障层与内层之间的粘合力。
作为粘合层，例如，可以使用包含诸如环氧类、酚类、三聚氰胺类、聚酰亚胺类、聚酯类、聚氨酯类等的树脂的粘合剂，并且可以使用通过熔融挤出涂覆(改性)聚丙烯或(改性)聚乙烯树脂而形成的熔融挤出树脂层。
在构成第二区域的层压片材中，外层的厚度可以为5μm至40μm，屏障层的厚度可以为5μm至100μm，并且内层的厚度可以为10μm至50μm。如果厚度太薄，则难以期望提高阻挡功能和强度，而如果厚度太厚，则可加工性降低并且导致片材的厚度增加，这不是优选的。
本发明提供了一种制造二次电池的方法，该二次电池使用电池外壳执行激活过程。根据本发明的用于制造二次电池的方法包括：将电极组件接收在电池外壳中并注入电解质溶液的步骤；以及在电池外壳已经被密封或临时密封的状态下执行激活过程的步骤。
激活过程是如下概念，其包括对于已经被密封的电池充分浸渍电解质溶液的老化过程以及通过以预定SOC进行充电/放电来激活电池的激活过程。在激活过程期间，为了防止副反应气体等在电极与分隔件之间滞留，可以包括在充电/放电的同时或在充电/放电之后的以预定压力挤压的过程。
在一个特定示例中，根据本发明的制造二次电池的方法还可以包括：在激活过程之后，通过在气袋单元中钻出至少一个通孔来执行排出内部气体的脱气过程。
在根据本发明的制造二次电池的方法中，由于在激活过程期间生成的内部气体通过第一区域排出或移动到相对充分膨胀的第一区域，所以具有抑制电极组件因内部气体而隆起或变形的现象的效果。另外，当通过传送构件(诸如夹钳)拾取电池单体以用于后续过程时，内部气体从电池外壳排出，因此，与电池外壳因内部气体而膨胀的电池单体相比，其具有容易拾取的效果，从而提高工艺的便利性。

Claims (7)

1.一种用于锂二次电池的电池外壳，所述电池外壳由包括外层/屏障层/内层结构的层压片材制成，所述电池外壳包括：
第一区域，所述第一区域是气体容易排出或相对容易膨胀的区域；以及
第二区域，所述第二区域是除所述第一区域之外的其余区域，
其中，构成所述第一区域的所述层压片材包括形成有狭缝的屏障层，并且在所述第一区域中的所述层压片材的所述内层和所述外层中的每一层上均未形成所述狭缝。
2.根据权利要求1所述的电池外壳，还包括：
接收部，电极组件被容纳在所述接收部中；以及
气袋单元，在激活过程期间生成的气体被收集在所述气袋单元中，
其中，所述第一区域被形成在所述气袋单元中。
3.根据权利要求1所述的电池外壳，其中，所述屏障层是铝或铝合金的。
4.根据权利要求2所述的电池外壳，其中，所述第一区域被形成在所述气袋单元的一端与接收部相接的边界与所述气袋单元的另一端之间的位置处。
5.根据权利要求1所述的电池外壳，其中，所述内层是聚丙烯或聚乙烯。
6.一种用于制造二次电池的方法，所述方法包括：
将电极组件接收在根据权利要求1至5中任一项所述的电池外壳中并注入电解质溶液的步骤；以及
在所述电池外壳已经被密封或临时密封的状态下执行激活过程的步骤。
7.根据权利要求6所述的方法，还包括：在所述激活过程之后通过在气袋部中钻出至少一个通孔来执行排出内部气体的脱气过程的步骤。
CN202080032621.1A 2019-10-23 2020-10-19 用于抑制电极组件的变形的锂二次电池外壳 Active CN113767511B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311422872.2A CN117578008A (zh) 2019-10-23 2020-10-19 用于锂二次电池的电池外壳和用于制造二次电池的方法

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2019-0132219 2019-10-23
KR1020190132219A KR20210048228A (ko) 2019-10-23 2019-10-23 전극조립체의 변형을 억제하는 리튬 이차전지용 전지 케이스
PCT/KR2020/014247 WO2021080269A1 (ko) 2019-10-23 2020-10-19 전극조립체의 변형을 억제하는 리튬 이차전지용 전지 케이스

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN202311422872.2A Division CN117578008A (zh) 2019-10-23 2020-10-19 用于锂二次电池的电池外壳和用于制造二次电池的方法

Publications (2)

Publication Number Publication Date
CN113767511A CN113767511A (zh) 2021-12-07
CN113767511B true CN113767511B (zh) 2023-11-28

Family

ID=75620098

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202080032621.1A Active CN113767511B (zh) 2019-10-23 2020-10-19 用于抑制电极组件的变形的锂二次电池外壳
CN202311422872.2A Pending CN117578008A (zh) 2019-10-23 2020-10-19 用于锂二次电池的电池外壳和用于制造二次电池的方法

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202311422872.2A Pending CN117578008A (zh) 2019-10-23 2020-10-19 用于锂二次电池的电池外壳和用于制造二次电池的方法

Country Status (9)

Country Link
US (1) US20220077525A1 (zh)
EP (2) EP4096005A1 (zh)
JP (2) JP7362988B2 (zh)
KR (1) KR20210048228A (zh)
CN (2) CN113767511B (zh)
ES (1) ES2962222T3 (zh)
HU (1) HUE064452T2 (zh)
PL (1) PL3886242T3 (zh)
WO (1) WO2021080269A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230071272A (ko) 2021-11-16 2023-05-23 주식회사 엘지에너지솔루션 이차전지의 파우치형 전지케이스 및 파우치형 이차전지의 제조방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015115161A (ja) * 2013-12-11 2015-06-22 日産自動車株式会社 二次電池の製造方法および製造装置
KR20160084133A (ko) * 2015-01-05 2016-07-13 주식회사 엘지화학 복수의 가스 제거부를 포함하고 있는 전지케이스
CN107438909A (zh) * 2015-03-31 2017-12-05 株式会社Lg化学 用于二次电池的袋型壳体及包括该袋型壳体的袋型二次电池
CN109690820A (zh) * 2017-02-16 2019-04-26 株式会社Lg化学 包括热膨胀带的安全性提高的电池单元及其制造方法
CN110226254A (zh) * 2017-11-15 2019-09-10 株式会社Lg化学 二次电池及其制造方法以及二次电池的袋及其制造方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11162436A (ja) * 1997-11-25 1999-06-18 Toshiba Battery Co Ltd 薄形二次電池
KR100686819B1 (ko) * 2005-03-28 2007-02-26 삼성에스디아이 주식회사 파우치형 리튬 이차 전지 및 이의 제조 방법
JP5453709B2 (ja) 2005-11-25 2014-03-26 日産自動車株式会社 電気化学デバイス用の外装材およびこれを用いた電気化学デバイス
KR101143302B1 (ko) 2009-03-03 2012-05-08 주식회사 엘지화학 전지케이스용 라미네이트 시트 및 이를 이용한 리튬 이차전지
JP5986740B2 (ja) 2011-12-08 2016-09-06 株式会社日立製作所 リチウム二次電池、シート材料、組電池
US9722274B2 (en) * 2012-06-11 2017-08-01 Nissan Motor Co., Ltd. Manufacturing method and manufacturing device of secondary battery
KR101936058B1 (ko) * 2012-08-02 2019-01-09 에스케이이노베이션 주식회사 파우치형 이차전지의 실링방법
KR102051425B1 (ko) 2013-04-11 2019-12-03 에스케이플래닛 주식회사 광고 플랫폼들의 통합 관리를 위한 장치 및 방법
JP5888798B2 (ja) * 2014-08-01 2016-03-22 Ｎｅｃエナジーデバイス株式会社 二次電池およびその製造方法
KR20170058047A (ko) * 2015-11-18 2017-05-26 주식회사 엘지화학 일회용 가스 포집부를 포함하고 있는 파우치형 전지케이스 및 이를 포함하는 이차전지의 제조방법
JP6644650B2 (ja) 2016-06-29 2020-02-12 太陽誘電株式会社 蓄電セル、外装フィルム及び蓄電モジュール
KR102183772B1 (ko) * 2016-12-22 2020-11-27 주식회사 엘지화학 전해액 토출 방지용 부재를 사용하는 전지셀 제조방법
JP2019153697A (ja) * 2018-03-02 2019-09-12 太陽誘電株式会社 蓄電デバイスの製造方法、外装フィルムの製造方法及び蓄電デバイス
KR20190132219A (ko) 2018-05-17 2019-11-27 주식회사 엘지화학 폴리아미드이미드 수지 필름

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015115161A (ja) * 2013-12-11 2015-06-22 日産自動車株式会社 二次電池の製造方法および製造装置
KR20160084133A (ko) * 2015-01-05 2016-07-13 주식회사 엘지화학 복수의 가스 제거부를 포함하고 있는 전지케이스
CN107438909A (zh) * 2015-03-31 2017-12-05 株式会社Lg化学 用于二次电池的袋型壳体及包括该袋型壳体的袋型二次电池
CN109690820A (zh) * 2017-02-16 2019-04-26 株式会社Lg化学 包括热膨胀带的安全性提高的电池单元及其制造方法
CN110226254A (zh) * 2017-11-15 2019-09-10 株式会社Lg化学 二次电池及其制造方法以及二次电池的袋及其制造方法

Also Published As

Publication number Publication date
JP7362988B2 (ja) 2023-10-18
EP3886242B1 (en) 2023-10-11
PL3886242T3 (pl) 2024-02-19
ES2962222T3 (es) 2024-03-18
JP2023100827A (ja) 2023-07-19
CN117578008A (zh) 2024-02-20
JP2022515176A (ja) 2022-02-17
EP3886242A4 (en) 2022-03-16
KR20210048228A (ko) 2021-05-03
US20220077525A1 (en) 2022-03-10
WO2021080269A1 (ko) 2021-04-29
EP3886242A1 (en) 2021-09-29
HUE064452T2 (hu) 2024-03-28
EP4096005A1 (en) 2022-11-30
CN113767511A (zh) 2021-12-07

Similar Documents

Publication Publication Date Title
EP4009432A1 (en) Pouch type battery cell to which vent part is attached, and manufacturing method therefor
CN113767511B (zh) 用于抑制电极组件的变形的锂二次电池外壳
KR102451686B1 (ko) 이차 전지용 외장재 및 이를 포함하는 이차 전지
KR102504794B1 (ko) 이차 전지용 외장재 및 이를 포함하는 이차 전지
KR101420060B1 (ko) 파우치 외장재 실링용 실링툴 및 파우치형 이차전지의 제조방법
KR102351581B1 (ko) 파우치형 이차전지
EP3818573B1 (en) A multilayer packaging structure for a thin film battery and a method for manufacturing of such a structure
EP4164043A1 (en) Pouch-type battery cell comprising sealing portion venting controlling means
EP2950365B1 (en) Secondary battery frame and battery pack including same
EP4203161A1 (en) Battery cell and battery module comprising same
EP4243177A1 (en) Battery cell and battery module comprising same
WO2020246072A1 (ja) 蓄電デバイス、蓄電デバイス集合体、電動自動車及び蓄電デバイスの製造方法
EP4170804A1 (en) Battery cell and battery module including same
EP4243175A1 (en) Battery cell and battery cell manufacturing apparatus for manufacturing same
EP4379918A1 (en) Battery cell and battery module including same
EP4231429A1 (en) Battery cell and battery module comprising same
EP4195377A1 (en) Battery cell and battery module comprising same
EP4106090A1 (en) Battery cell and battery module comprising same
EP4191761A1 (en) Battery cell and battery cell manufacturing apparatus
KR20240029401A (ko) 전해액 주입이 용이한 파우치형 전지 케이스 및 이를 포함하는 파우치형 전지 셀
KR20230095320A (ko) 파우치 미스매칭을 방지하는 전지 셀의 제조방법
JP2024520328A (ja) ガス排出部材、及びそれを備える二次電池
CN115461916A (zh) 电池电芯和包括该电池电芯的电池模块

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant