WO2016159596A1 - 이차 전지용 파우치 외장재 및 이를 포함하는 파우치형 이차 전지 - Google Patents
이차 전지용 파우치 외장재 및 이를 포함하는 파우치형 이차 전지 Download PDFInfo
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- WO2016159596A1 WO2016159596A1 PCT/KR2016/003091 KR2016003091W WO2016159596A1 WO 2016159596 A1 WO2016159596 A1 WO 2016159596A1 KR 2016003091 W KR2016003091 W KR 2016003091W WO 2016159596 A1 WO2016159596 A1 WO 2016159596A1
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- pouch
- secondary battery
- type secondary
- oxazolidine
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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Definitions
- lithium secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries.
- nickel cadmium batteries nickel hydride batteries
- nickel zinc batteries nickel zinc batteries
- lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge.
- the self-discharge rate is very low and the energy density is high.
- such a lithium secondary battery may be classified into a can type secondary battery and a pouch type secondary battery according to an exterior or an application form.
- FIG. 1 is an exploded perspective view illustrating a configuration of a conventional pouch type secondary battery
- FIG. 2 is a coupling diagram of the pouch type secondary battery of FIG. 1.
- the pouch type secondary battery includes an electrode assembly 20 having a positive electrode tab 21 and a negative electrode tab 22 and a pouch packaging material 10 containing the electrode assembly 20. It is common.
- the water adsorption material may include one or more selected from the group consisting of oxazolidine-based compounds, calcium chloride, alumina and zeolite, and may preferably contain oxazolidine. .
- the pouch-type secondary battery may be coated with all or at least a portion of the sealing portion by a closing tape so that the cut surface of the sealing portion is not exposed to the outside.
- the oxazolidine-based compound may be represented by the following formula (1) or (2).
- FIG. 7 illustrates a pouch type secondary battery according to one specific embodiment of the present invention.
- the pouch type secondary battery according to the present invention includes an electrode assembly 200 and a pouch exterior material 100.
- the outer insulating layers 111 and 121 may be made of an insulating material such as polyethylene terephthalate (PET) resin or nylon (nylon) resin in order to secure insulation between the secondary battery and the outside.
- PET polyethylene terephthalate
- nylon nylon
- the inner insulating layers 113 and 123 for sealing the upper pouch 110 and the lower pouch 120, in order to adhere to each other, polyethylene (polyethylene, PE) resin, Polyolefin resins such as polypropylene (PP) resins, random copolymers thereof, terpolymers of propylene, butylene and ethylene may be included.
- the inner insulation layer includes at least one polypropylene resin such as polypropylene homopolymer, polypropylene copolymer, and stretched polypropylene (cPP).
- cPP stretched polypropylene
- the inner insulating layers 113 and 123 include a moisture absorbing material.
- the water adsorption material may include at least one or more of an oxazolidine-based compound, calcium chloride, alumina, and zeolite.
- the inner insulation layers 113 and 123 include an oxazolidine compound as the moisture adsorption material.
- the inner insulation layers 113 and 123 may further include at least one auxiliary moisture adsorption material of calcium chloride, alumina and zeolite in addition to the oxazolidine compound as the water adsorption material. have.
- the auxiliary moisture adsorption material is not limited to the above-described materials, and may be employed as the auxiliary moisture adsorption material of the present invention as long as the material has a function of adsorbing moisture.
- the oxazolidine reacts with water molecules to produce alcohol and aldehyde, and as shown in Scheme 2, when two substituents other than hydrogen are bonded at the carbon position 2, ketone is formed instead of aldehyde.
- the pouch packaging material according to the present invention since the effect of decomposing water molecules by oxazolidine occurs, the pouch packaging material according to the present invention has excellent water removal effect.
- the tape is bent along the cut surface of the sealing portion and then taped in the order of bonding the other end to the outer insulating layer of the upper pouch.
- the finishing treatment may be performed in such a manner as to seal the sealing portion cut surface, but is not limited to the above method, and may be applied without particular limitation as long as the sealing portion is not exposed to the outside.
- the width of the closure tape is not particularly limited, but it is preferred that the closure tape be covered by all or at least half the width of the sealing portion.
- the finishing tape 300 is an adhesive layer is formed on one side, the adhesive layer is bonded to the outer insulating layer of the upper and lower pouches.
- the material of the finishing tape is not particularly limited as long as it has insulating properties and is not reactive to the electrolyte solution.
- Non-limiting examples of finish tape materials that meet these characteristics include polyethylene, polypropylene, polyester, nylon, vinyl chloride, Teflon®, polyimide, kapton®, polyphenylenesulfide, and the like. Can be.
- the adhesive layer has an adhesive property, and a polyolefin resin such as a polyethylene (PE) resin, a polypropylene (PP) resin, a random copolymer thereof, a terpolymer of propylene, butylene, and ethylene is 1 It may contain more than one species.
- the inner insulation layer includes at least one polypropylene resin such as polypropylene homopolymer, polypropylene copolymer, and stretched polypropylene (cPP).
- the present invention is not particularly limited thereto, and is not particularly limited as long as it is capable of forming adhesion with the outer insulating layers of the upper and lower pouches.
- the description of the oxazolidine-based compound included in the adhesive layer is the same as the description of the oxazolidine-based compound included in the above-described internal insulation layer, and thus, the above-described contents may be referred to and do not overlap.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (11)
- 상부 파우치와 하부 파우치를 포함하며, 상기 상부 및 하부 파우치는 각각 외부, 금속층, 내부 절연층이 순차적으로 라미네이트되어 형성되며, 상기 상부 파우치와 하부 파우치는 각각의 외주면에 실링부가 형성되는 것이며,여기에서, 상기 내부 절연층은 수분 흡착 물질을 포함하는 것인, 파우치형 이차 전지의 파우치 외장재.
- 제1항에 있어서,상기 수분 흡착 물질은, 옥사졸리딘(oxazolidine)계 화합물, 염화칼슘, 알루미나 및 제올라이트로 이루어진 그룹에서 선택된 1종 이상을 포함하는 것인, 파우치형 이차 전지의 파우치 외장재.
- 제1항에 있어서,상기 수분 흡착 물질은 옥사졸리딘(oxazolidine)계 화합물을 포함하는 것인, 파우치형 이차 전지의 파우치 외장재.
- 제1항에 있어서,상기 수분 흡착 물질의 함량은 내부 절연층 100 중량부 대비 0.01 내지 10 중량부인 것인, 파우치형 이차 전지의 파우치 외장재.
- 양극판 및 음극판이 세퍼레이터를 사이에 두고 배치된 전극 조립체; 및상기 전극 조립체 및 전해액을 수납하고, 상부 파우치와 하부 파우치로 구성된 파우치 외장재;를 포함하며,여기에서 상기 파우치 외장재는 제1항에 따른 것을 특징으로 하는, 파우치형 이차 전지.
- 제6항에 있어서,상기 파우치형 이차 전지는 실링부의 절단면이 외부로 노출되지 않도록 마감 테이프에 의해 실링부의 전부 또는 적어도 일부가 피복된 것인, 파우치형 이차 전지.
- 제7항에 있어서,상기 마감 테이프는 일측면에 접착층이 형성되어 있으며, 상기 접착층은 수분 흡착 물질을 포함하는 것인, 파우치형 이차 전지.
- 제8항에 있어서,상기 수분 흡착 물질은, 옥사졸리딘(oxazolidine)계 화합물, 염화칼슘, 알루미나 및 제올라이트로 이루어진 그룹에서 선택된 1종 이상을 포함하는 것인, 파우치형 이차 전지,
- 제8항에 있어서,상기 수분 흡착 물질은 옥사졸리딘(oxazolidine)계 화합물을 포함하는 것인, 파우치형 이차 전지.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16773377.3A EP3249715B1 (en) | 2015-03-27 | 2016-03-25 | Pouch exterior for secondary battery and pouch-type secondary battery comprising same |
| JP2017545647A JP6445181B2 (ja) | 2015-03-27 | 2016-03-25 | 二次電池用パウチ外装材及びこれを含むパウチ型二次電池 |
| US15/554,874 US10811730B2 (en) | 2015-03-27 | 2016-03-25 | Pouch exterior for secondary battery and pouch-type secondary battery comprising same |
| PL16773377T PL3249715T3 (pl) | 2015-03-27 | 2016-03-25 | Zewnętrzne etui do baterii akumulatorowej i bateria akumulatorowa obejmująca takie etui |
| CN201680012730.0A CN107567662B (zh) | 2015-03-27 | 2016-03-25 | 用于二次电池的外部袋和包括该外部袋的袋型二次电池 |
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| KR10-2015-0043425 | 2015-03-27 | ||
| KR1020150043425A KR101858314B1 (ko) | 2015-03-27 | 2015-03-27 | 이차 전지용 파우치 외장재 및 이를 포함하는 파우치형 이차 전지 |
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| PCT/KR2016/003091 Ceased WO2016159596A1 (ko) | 2015-03-27 | 2016-03-25 | 이차 전지용 파우치 외장재 및 이를 포함하는 파우치형 이차 전지 |
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| US (1) | US10811730B2 (ko) |
| EP (1) | EP3249715B1 (ko) |
| JP (1) | JP6445181B2 (ko) |
| KR (1) | KR101858314B1 (ko) |
| CN (1) | CN107567662B (ko) |
| PL (1) | PL3249715T3 (ko) |
| WO (1) | WO2016159596A1 (ko) |
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| EP3776683A1 (en) * | 2018-03-26 | 2021-02-17 | Maxwell Technologies Korea Co., Ltd. | Flexible closure for energy storage device and energy storage device including the same |
| CN110504392A (zh) * | 2018-05-18 | 2019-11-26 | 宁德新能源科技有限公司 | 电池 |
| JP7356257B2 (ja) * | 2019-05-10 | 2023-10-04 | 共同印刷株式会社 | 硫化物系全固体電池用ラミネートシート及びそれを用いたラミネートパック |
| KR102395231B1 (ko) | 2019-10-24 | 2022-05-04 | 주식회사 엘지에너지솔루션 | 전지셀 및 이를 포함하는 전지 모듈 |
| CN115917786A (zh) * | 2020-03-07 | 2023-04-04 | S·彼得罗维奇 | 插入式空腔电极锂电池 |
| WO2021195856A1 (zh) * | 2020-03-30 | 2021-10-07 | 宁德新能源科技有限公司 | 封装结构和电芯 |
| US20220359959A1 (en) * | 2021-05-10 | 2022-11-10 | GM Global Technology Operations LLC | Lithium ion rechargeable electrochemical cells with insulated tabs and methods of forming the same |
| SE2250971A1 (en) * | 2022-08-17 | 2024-02-18 | Cuberg Inc | Pouch battery cell system |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20180040913A1 (en) | 2018-02-08 |
| PL3249715T3 (pl) | 2020-06-01 |
| US10811730B2 (en) | 2020-10-20 |
| EP3249715A1 (en) | 2017-11-29 |
| CN107567662B (zh) | 2020-08-18 |
| CN107567662A (zh) | 2018-01-09 |
| JP6445181B2 (ja) | 2018-12-26 |
| KR101858314B1 (ko) | 2018-06-28 |
| KR20160115531A (ko) | 2016-10-06 |
| EP3249715A4 (en) | 2018-06-27 |
| JP2018506832A (ja) | 2018-03-08 |
| EP3249715B1 (en) | 2019-11-27 |
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