JP2021513187A - 電極組立体およびこれを含む二次電池 - Google Patents
電極組立体およびこれを含む二次電池 Download PDFInfo
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- 238000009792 diffusion process Methods 0.000 claims abstract description 47
- 238000000926 separation method Methods 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 239000011888 foil Substances 0.000 claims abstract description 9
- 235000015110 jellies Nutrition 0.000 claims abstract description 9
- 239000008274 jelly Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 73
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- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 229910021382 natural graphite Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 2
- -1 polyethylene terephthalate Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 15
- 230000020169 heat generation Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
Description
本出願は2018年11月30日付韓国特許出願第10−2018−0152916号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として含まれる。
人造グラファイトの熱拡散層を含む放熱テープが接着された電極タブと熱拡散層が含まれていないテープが付着された電極タブ間の温度勾配を比較した実験結果を図8に示した。人造グラファイトの熱拡散層を含む放熱テープの厚さは40μmであり、人造グラファイトの熱拡散層の厚さは25μmである。
本発明の実施形態によって熱拡散層を含む放熱テープに対して、人造グラファイト、天然グラファイト、および金属箔を含むそれぞれの場合と、熱拡散層を含まない放熱テープに対する水平熱伝導度を測定して表1に示した。
140:負極タブ
160:正極タブ
170、270:放熱テープ
171、271:熱拡散層
Claims (12)
- 負極シート、正極シート、および前記負極シートと前記正極シートの間に介された分離膜が共に巻き取られたゼリーロール型電極組立体において、
前記負極シートまたは前記正極シートに付着され、少なくとも一部分が外部に延長された一つ以上の電極タブ;および
前記電極タブに接着される放熱テープを含み、
前記放熱テープが接着された前記電極タブは、巻き取られた前記電極組立体の中心部と外周面の間、または外周面上に位置し、
前記放熱テープは、熱拡散層を含み、
前記熱拡散層は、グラファイト(Graphite)および金属箔(Metal Foil)のうちの少なくとも一つを含む、電極組立体。 - 前記グラファイト(Graphite)は、天然グラファイトおよび人造グラファイトのうちの少なくとも一つを含む、請求項1に記載の電極組立体。
- 前記金属箔は、CuおよびAlのうちの少なくとも一つを含む、請求項1または2に記載の電極組立体。
- 前記放熱テープの接着面積は、前記電極タブの付着面積より大きい、請求項1〜3のいずれか一項に記載の電極組立体。
- 前記放熱テープの接着面積に該当する領域は、前記電極タブの付着面積に該当する領域を含む、請求項4に記載の電極組立体。
- 前記放熱テープは、接着層をさらに含み、
前記接着層は、前記電極タブと前記熱拡散層の間および前記負極シートまたは正極シートと前記熱拡散層の間に位置する、請求項5に記載の電極組立体。 - 前記放熱テープは、接着層をさらに含み、
前記接着層は、前記負極シートまたは正極シートと前記熱拡散層の間に位置し、
前記電極タブの少なくとも一部は前記熱拡散層と接触する、請求項5に記載の電極組立体。 - 前記熱拡散層の厚さは、17μm〜1mmである、請求項1〜7のいずれか一項に記載の電極組立体。
- 前記放熱テープは、接着層および基材層をさらに含み、
前記熱拡散層は、前記接着層と前記基材層の間に位置する、請求項1〜8のいずれか一項に記載の電極組立体。 - 前記基材層は、ポリイミド(Polyimide)およびポリエチレンテレフタレート(Polyethylene terephthalate)のうちの少なくとも一つを含む、請求項9に記載の電極組立体。
- 前記接着層の厚さは5μm〜25μmであり、
前記基材層の厚さは5μm〜25μmである、請求項9または10に記載の電極組立体。 - 請求項1〜11のいずれか一項に記載の電極組立体を含む二次電池。
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Application Number | Priority Date | Filing Date | Title |
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KR10-2018-0152916 | 2018-11-30 | ||
KR1020180152916A KR102549437B1 (ko) | 2018-11-30 | 2018-11-30 | 전극 조립체 및 이를 포함하는 이차 전지 |
PCT/KR2019/011875 WO2020111468A1 (ko) | 2018-11-30 | 2019-09-11 | 전극 조립체 및 이를 포함하는 이차 전지 |
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JP2021513187A true JP2021513187A (ja) | 2021-05-20 |
JP7095215B2 JP7095215B2 (ja) | 2022-07-05 |
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US (1) | US11728534B2 (ja) |
EP (1) | EP3748763B1 (ja) |
JP (1) | JP7095215B2 (ja) |
KR (1) | KR102549437B1 (ja) |
CN (1) | CN111937222A (ja) |
WO (1) | WO2020111468A1 (ja) |
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US20210021004A1 (en) | 2021-01-21 |
EP3748763A4 (en) | 2021-05-05 |
EP3748763A1 (en) | 2020-12-09 |
JP7095215B2 (ja) | 2022-07-05 |
CN111937222A (zh) | 2020-11-13 |
EP3748763B1 (en) | 2024-04-17 |
WO2020111468A1 (ko) | 2020-06-04 |
US11728534B2 (en) | 2023-08-15 |
KR20200065950A (ko) | 2020-06-09 |
KR102549437B1 (ko) | 2023-06-28 |
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