JP4438348B2 - バイポーラ電池および組電池 - Google Patents
バイポーラ電池および組電池 Download PDFInfo
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- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
図1は、本発明の第1の実施形態によるバイポーラ電池の平面図、図2は、図1のII−II線に沿う拡大断面図、図3は、図2のIII−III線に沿う拡大断面図である。
本発明の第2の実施形態は、上述した第1の実施形態のバイポーラ電池を複数個接続した組電池である。図6(A)〜(C)は、第2の実施形態による組電池の平面図、正面図、および側面図である。
本発明の第3の実施形態は、上述した第1の実施形態のバイポーラ電池と、通常の電池を複数個直列に接続したものとを組み合わせた組電池である。図7(A)〜(C)は、第3の実施形態による組電池の平面図、正面図、および側面図である。なお、第2の実施形態の組電池と同様の部分は説明を省略する。
第4の実施形態は、前述した第2または第3の実施形態による組電池を複数個接続した複合組電池である。図8(A)〜(C)は、第4の実施形態による複合組電池の平面図、正面図、および側面図である。
第5の実施形態は、上述した第2、第3または第4の実施形態による組電池または複合組電池を搭載し、モータの電源として用いてなる車両である。組電池または複合組電池をモータ用電源として用いる車両として、たとえば電気自動車、ハイブリッド自動車など、車輪をモータによって駆動する自動車が挙げられる。
実施例1では、層状をなす構成単位の数が10層、高抵抗層周辺が図3の構造、高抵抗層を構成する樹脂がポリ4フッ化エチレン、正極活物質がLi・Mn系複合酸化物、負極活物質が非結晶性炭素材、であるバイポーラ電池を使用した。
1.平均減衰量の測定
バイポーラ電池の略中央部(図1の平面図において略中央部)に、加速度ピックアップを設定し、インパルスハンマーによってハンマリングしたときの加速度ピックアップの振動スペクトルを測定した。加速度ピックアップの設定方法は、JIS B 0908(振動及び衝撃ピックアップの校正方法・基本概念)に準拠した。測定された振動スペクトルをFFT分析器により解析し、周波数(Hz)と加速度(dB)の次元に変換した。得られた周波数に関して、平均化(N=50の平均)、およびスムージングを行い、振動伝達率スペクトルのグラフを得た。振動伝達率スペクトルのグラフの中で、最も振動伝達率の大きいピーク値(dB)の、基準値(dB)に対する低減率(%)を平均減衰量とした。平均減衰量の値が大きいほど、振動が低減されたことを示す。ここで、基準値は、上記した比較例の振動伝達率スペクトルのグラフにおけるピーク値とした。
樹脂の硬度の測定は、JIS K 6301(JIS A)の硬度測定方法に基づいて行った。
樹脂の誘電正接の測定は、JIS K 6911の誘電率測定方法に基づいて行った。
絶縁抵抗計を用い、タブとラミネートフィルムの金属層との間の抵抗値を測定した。両者の間に500Vの電圧を印加したときに、100MΩ以上の絶縁抵抗を有したバイポーラ電池を合格(○)とし、100MΩに満たない絶縁抵抗しか有さないバイポーラ電池を不合格(×)とした。
図10に示す評価結果が得られた。
10 電池要素、
11 バイポーラ電極、
12 端部電極、
13 端部電極、
14 電解質、
20 ラミネートフィルム、
21 金属層、
22 外側樹脂層、
23 内側樹脂層、
24 高抵抗層、
30 タブ、
4 通常の電池、
5 組電池、
5a 組電池、
6 複合組電池、
7 車両。
Claims (3)
- 集電体の一方の面に正極が形成され他方の面に負極が形成されたバイポーラ電極を、電解質を介在させて複数直列に接続してなる電池要素と、
金属層および当該金属層の前記電池要素側に形成される樹脂層を含み、前記電池要素を被覆するラミネートフィルムと、
前記電池要素から前記ラミネートフィルムの外部に引き出されてなるタブとを有し、
前記タブおよび前記金属層の間に、ポリ4フッ化エチレン樹脂、ポリ3フッ化塩化エチレン樹脂、一般用ポリスチレン樹脂、および高衝撃性ポリスチレン樹脂からなる群より選択される樹脂から構成され、前記樹脂層よりも体積固有抵抗の大きな高抵抗層を有し、
前記高抵抗層を構成する樹脂の誘電正接は、印加周波数が10Hz〜1kHz、環境温度が−30〜80℃である場合、1.0×10−3〜5.0×10−1の範囲内にあることを特徴とするバイポーラ電池。 - 前記高抵抗層を構成する樹脂の硬度は、5〜95(JIS A)の範囲内にあることを特徴とする請求項1に記載のバイポーラ電池。
- 請求項1または請求項2に記載のバイポーラ電池と、前記バイポーラ電池の正極および負極と同一材料から構成され異なる集電体上にそれぞれ形成される正極および負極を備えた電池が前記電池要素における構成単位の数だけ直列に接続されることにより前記バイポーラ電池と同一の電圧を有してなる電池群とを、並列に接続したことを特徴とする組電池。
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JP4595302B2 (ja) * | 2003-09-04 | 2010-12-08 | 日産自動車株式会社 | バイポーラ電池 |
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 |
JP2012094437A (ja) * | 2010-10-28 | 2012-05-17 | Toyota Motor Corp | 全固体電池 |
US10530006B2 (en) | 2013-08-29 | 2020-01-07 | Lg Chem, Ltd. | Electrode assembly for polymer secondary battery cell |
KR101586881B1 (ko) * | 2013-08-29 | 2016-01-19 | 주식회사 엘지화학 | 폴리머 2차전지 셀용 전극조립체 |
JP6260335B2 (ja) * | 2014-02-20 | 2018-01-17 | 日産自動車株式会社 | 双極型二次電池 |
CN112519359B (zh) * | 2020-11-05 | 2023-02-03 | 江西春光新材料科技股份有限公司 | 一种高阻隔复合硬片及其制备方法 |
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