JP2020523753A - 熱伝導性樹脂で満たされた中空を有する二次電池 - Google Patents
熱伝導性樹脂で満たされた中空を有する二次電池 Download PDFInfo
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Abstract
Description
本出願は、2017年12月1日付韓国特許出願第10−2017−0164546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すべての内容は本明細書の一部として含まれている。
本発明は、熱伝導性樹脂で満たされた中空を有する二次電池であり、放熱性能が向上した二次電池に関する。
その他の缶の材質などは図1で説明したとおりである。
陽極活物質としてLiCoO2を使用し、LiCoO2 96重量%、およびDenka Black(導電材)2.0重量%、PVdF(結合剤)2.0重量%を溶剤であるNMP(N−methyl−2−pyrrolidone)に添加して陽極混合物スラリーを製造した後、アルミニウム箔上にコート、乾燥および圧搾して陽極を製造した。
実施例1で、円筒形ケースの中空に熱伝導性樹脂を満たさず、空けておいたことを除いては実施例1と同様に二次電池を製造した。
実施例1で、中空が形成されていない円筒形ケースを用いたことを除いては実施例1と同様に二次電池を製造した。
前記実施例1および比較例1、2で製造された二次電池の強制対流時、自然対流時、水冷時の二次電池の表面温度、コア温度、温度差、基準温度に到達するまでかかる時間、1次放電後再放電までかかる時間、および1次放電後充電までかかる時間を下記表1〜表3に示した。
110 電極組立体
111 陽極
112 陰極
113 分離膜
120 缶体
121 中空
130 トップカバー
140 熱伝導性樹脂
231 貫通口
Claims (13)
- 陽極、陰極、および前記陽極と陰極に介在した分離膜が共に巻き取られた構造の電極組立体(ゼリーロール)と、
内部に一側が開放された形態の中空が形成されており、前記電極組立体が前記中空を囲む形態で内蔵される缶体と、
前記缶体の開放上端部に搭載されて缶体を密閉するトップカバーと、
を含み、
前記缶体の底部およびトップカバーのうちのいずれか一つは、前記缶体の中空と連通する貫通口が形成されており、
前記中空の全体体積に対して50%以上の熱伝導性樹脂が満たされている、二次電池。 - 前記電極組立体の上面と下面には上部絶縁体および下部絶縁体が介在し、上部絶縁体および下部絶縁体のうちのいずれか一つは、前記中空の大きさに対応する貫通口が形成されている、請求項1に記載の二次電池。
- ウレタンまたはシリコンを基材とし、アルミナまたは窒化ホウ素を補助材とするポリマーである、請求項1又は2に記載の二次電池。
- 前記二次電池は、一端が前記熱伝導性樹脂と接触し、他端が中空外部に露出するように中空に挿入されている金属棒をさらに含む、請求項1から3のいずれか一項に記載の二次電池。
- 前記熱伝導性樹脂と前記金属棒の接触部位は、前記金属棒の全体表面積を基準に50%以下である、請求項4に記載の二次電池。
- 前記金属棒の外径は、中空内径より小さい、請求項4に記載の二次電池。
- 前記中空の大きさは、巻き取られた構造の電極組立体の内径に対応する大きさからなる、請求項1から6のいずれか一項に記載の二次電池。
- 前記二次電池は、円筒形または角形の電池である、請求項1から7のいずれか一項に記載の二次電池。
- 請求項1から8のいずれか一項に記載の二次電池を二つ以上含む二次電池パックであって、
前記二次電池は、陽極、陰極、および前記陽極と陰極に介在した分離膜が共に巻き取られた構造の電極組立体(ゼリーロール)と、
内部に一側が塞がっている形態の中空が形成されており、前記電極組立体が前記中空を囲む形態で内蔵される缶体と、
前記缶体の開放上端部に搭載されて缶体を密閉するトップカバーと、
を含み、
前記缶体の底部およびトップカバーのうちのいずれか一つは、前記缶体の中空と連通する貫通口が形成されており、
前記中空の全体体積に対して50%以上の熱伝導性樹脂が満たされており、
前記熱伝導性樹脂は、二つ以上の二次電池を電気的に接続するパック端子に接触している、二次電池パック。 - 前記パック端子は、前記二次電池の中空に対応する部位で前記中空に一部挿入される凸部を含み、前記凸部が前記中空内の熱伝導性樹脂と接触している、請求項9に記載の二次電池パック。
- 請求項1から8のいずれか一項に記載の二次電池を二つ以上含む二次電池パックであって、
前記二次電池は、陽極、陰極、および前記陽極と陰極に介在した分離膜が共に巻き取られた構造の電極組立体(ゼリーロール)と、
内部に一側が塞がっている形態の中空が形成されており、前記電極組立体が前記中空を囲む形態で内蔵される缶体と、
前記缶体の開放上端部に搭載されて缶体を密閉するトップカバーと、
を含み、
前記缶体の底部およびトップカバーのうちのいずれか一つは、前記缶体の中空と連通する貫通口が形成されており、
前記中空の全体体積に対して50%以上の熱伝導性樹脂が満たされており、
一端が前記熱伝導性樹脂と接触し、他端が前記中空外部に露出するように金属棒が前記中空に挿入され、前記金属棒の他端が二つ以上の二次電池を電気的に接続するパック端子に結合されている、二次電池パック。 - 前記金属棒と前記パック端子の結合は、溶接または機械的締結によって行われる、請求項11に記載の二次電池パック。
- 請求項9から12のいずれか一項に記載の二次電池パックを、電源として含む、デバイス。
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KR10-2017-0164546 | 2017-12-01 | ||
KR1020170164546A KR102308017B1 (ko) | 2017-12-01 | 2017-12-01 | 열전도성 수지로 채워진 중공을 가지는 이차전지 |
PCT/KR2018/013469 WO2019107784A1 (ko) | 2017-12-01 | 2018-11-07 | 열전도성 수지로 채워진 중공을 가지는 이차전지 |
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CN112652846B (zh) * | 2021-01-19 | 2022-11-29 | 中国第一汽车股份有限公司 | 电芯、电池总成和汽车 |
CN114373973A (zh) * | 2021-04-06 | 2022-04-19 | 湖北亿纬动力有限公司 | 一种电芯及电池模组 |
CN116435698A (zh) * | 2023-06-15 | 2023-07-14 | 宁德时代新能源科技股份有限公司 | 电池单体、电池以及用电装置 |
CN117832649B (zh) * | 2024-03-04 | 2024-05-07 | 江苏睿恩新能源科技有限公司 | 一种高能量密度设计的圆柱电池卷芯及圆柱电池 |
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US20120052351A1 (en) * | 2010-08-24 | 2012-03-01 | Industrial Technology Research Institute | Battery with soaking plate for thermally and electrically conductive channel, and cap assembly thereof |
JP2013004402A (ja) * | 2011-06-20 | 2013-01-07 | Toshiba Corp | 二次電池セル、二次電池装置、車両、電気機器及び二次電池セルの製造方法 |
KR20160146587A (ko) * | 2015-06-12 | 2016-12-21 | 주식회사 엘지화학 | 배터리 모듈 |
KR20170070542A (ko) * | 2015-12-14 | 2017-06-22 | 주식회사 엘지화학 | 캔형 이차전지 및 그를 포함하는 이차전지 모듈 |
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WO2019107784A1 (ko) | 2019-06-06 |
US20200127335A1 (en) | 2020-04-23 |
EP3637538A1 (en) | 2020-04-15 |
CN110832693A (zh) | 2020-02-21 |
CN110832693B (zh) | 2023-04-07 |
JP7163317B2 (ja) | 2022-10-31 |
EP3637538A4 (en) | 2020-06-24 |
US11335957B2 (en) | 2022-05-17 |
KR20190065077A (ko) | 2019-06-11 |
EP3637538B1 (en) | 2024-01-31 |
KR102308017B1 (ko) | 2021-09-30 |
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