JP2021531611A - 多層構造の電池ケースを有する二次電池及びその製造方法 - Google Patents
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Abstract
Description
本発明は多層構造の電池ケースを有する円筒型二次電池及びその製造方法に関するものであり、より詳しくは銅とニッケル素材の異種金属板材の所定部位のみ超音波溶接して電気ケース用板材として使い、陰極タブが電池ケースの内部層を構成する銅と同種であるので、溶接信頼性を保障する高出力二次電池を提供することができる多層構造の電池ケースを有する円筒型二次電池及びその製造方法に関するものである。
110 陽極
120 陰極
130 分離膜
140 陽極タブ
150 陰極タブ
200 キャップ組立体
210 電流遮断部材
220 電流遮断ガスケット
230 安全ベント
240 PTC素子
250 トップキャップ
260 クリンピングガスケット
300 電池ケース
310 内部層
320 外部層
330 溶接部
410 ダイ
420 超音波ホーン
421 チップ
510 金型
520 パンチ
530 ジグ
本発明は多層構造の電池ケースを有する二次電池及びその製造方法に関するものであり、より詳しくは銅とニッケル素材の異種金属板材の所定部位のみ超音波溶接して電気ケース用板材として使い、陰極タブが電池ケースの内部層を構成する銅と同種であるので、溶接信頼性を保障する高出力二次電池を提供することができる多層構造の電池ケースを有する二次電池及びその製造方法に関するものである。
Claims (12)
- 陽極、陰極、前記陽極と前記陰極との間に介在された分離膜、一側が前記陽極と連結されている陽極タブ、及び一側が前記陰極と連結されている陰極タブを含む電極組立体と、
電池の内圧上昇の際に電流を遮断するように前記電極組立体上部に位置する電流遮断部材、前記電流遮断部材の上端と連結されている安全ベント、及び上方に突出した形状を有し、外周面の下面が前記安全ベントの外周面の上面と接触するトップキャップを含むキャップ組立体と、
前記電極組立体及び前記キャップ組立体を収納する円筒状電池ケースと、
を含み、
前記円筒状電池ケースは、電極組立体に隣り合う内部層と、前記内部層より熱伝導度が相対的に低い素材からなる外部層と、からなり、前記内部層及び前記外部層は、溶接によって所定領域のみ固定されている溶接部を備える、多層構造の電池ケースを有する円筒型二次電池。 - 前記内部層は銅からなり、前記外部層はニッケル又はニッケルメッキ鋼板からなる、請求項1に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は超音波溶接によって形成される、請求項1又は2に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は前記電池ケースの下面に位置する、請求項1から3のいずれか一項に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は前記電池ケースの内径より小さい円形リング形状を有する、請求項1から4のいずれか一項に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は前記電池ケースの側面に位置する、請求項1から3のいずれか一項に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は前記電池ケースの上面に位置する、請求項1から3のいずれか一項に記載の多層構造の電池ケースを有する円筒型二次電池。
- 前記溶接部は前記電池ケースの下面、側面、及び上面のいずれか2面以上に位置する、請求項1から3のいずれか一項に記載の多層構造の電池ケースを有する円筒型二次電池。
- 銅板材とニッケル又はニッケルメッキ鋼板とを重畳させて積層板材を準備する段階と、
前記積層板材の所定領域のみ溶接して溶接部を形成させる段階と、
前記積層板材をディープドローイングすることにより、下面及び側面が所定の角度に折り曲げられ、上部が開放した円筒状電池ケースを準備する段階と、
前記円筒状電池ケースに電極組立体及びキャップ組立体を収納する段階と、
前記円筒状電池ケースの上部を固定する段階と、
を含む、多層構造の電池ケースを有する円筒型二次電池の製造方法。 - 前記溶接は超音波溶接である、請求項9に記載の多層構造の電池ケースを有する円筒型二次電池の製造方法。
- 前記溶接部は円形リング形状である、請求項9又は10に記載の多層構造の電池ケースを有する円筒型二次電池の製造方法。
- 前記円形リングは仮想の同一中心点からの内径が互いに異なる2個以上である、請求項11に記載の多層構造の電池ケースを有する円筒型二次電池の製造方法。
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PCT/KR2020/002215 WO2020251134A1 (ko) | 2019-06-10 | 2020-02-17 | 다층 구조의 전지케이스를 갖는 원통형 이차전지 및 그 제조방법 |
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CN114976405A (zh) | 2021-02-19 | 2022-08-30 | 株式会社Lg新能源 | 电极端子的铆接结构及包括其的二次电池、电池组及汽车 |
DE212021000567U1 (de) * | 2021-06-28 | 2024-03-18 | Hefei Gotion High-Tech Power Energy Co., Ltd. | Zylindrische Batteriezelle und Batterie |
CN114937855B (zh) * | 2022-03-30 | 2024-05-14 | 江苏正力新能电池技术有限公司 | 一种圆柱电池的制备方法及圆柱电池 |
CN114833443B (zh) * | 2022-04-12 | 2024-09-17 | 海目星激光科技集团股份有限公司 | 一种多层极耳的焊接方法 |
CN116000447B (zh) * | 2022-04-21 | 2024-08-27 | 苏州朗旭新能源科技有限公司 | 一种电芯连续片焊接机 |
CN116454550A (zh) * | 2023-06-16 | 2023-07-18 | 深圳海辰储能控制技术有限公司 | 一种集流组件及其制备方法、电池及用电设备 |
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- 2019-06-10 KR KR1020190067867A patent/KR102522106B1/ko active IP Right Grant
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- 2020-02-17 EP EP20786428.1A patent/EP3780134A4/en active Pending
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EP3780134A1 (en) | 2021-02-17 |
CN112449733A (zh) | 2021-03-05 |
CN112449733B (zh) | 2023-12-26 |
KR20200141200A (ko) | 2020-12-18 |
WO2020251134A1 (ko) | 2020-12-17 |
JP7048859B2 (ja) | 2022-04-06 |
KR102522106B1 (ko) | 2023-04-14 |
TWI845658B (zh) | 2024-06-21 |
EP3780134A4 (en) | 2021-07-21 |
US20210265687A1 (en) | 2021-08-26 |
US11735790B2 (en) | 2023-08-22 |
TW202046530A (zh) | 2020-12-16 |
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