JP7483910B2 - 電極組立体、二次電池、電池モジュール、電池パック及び電力消費装置 - Google Patents
電極組立体、二次電池、電池モジュール、電池パック及び電力消費装置 Download PDFInfo
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- JP7483910B2 JP7483910B2 JP2022551417A JP2022551417A JP7483910B2 JP 7483910 B2 JP7483910 B2 JP 7483910B2 JP 2022551417 A JP2022551417 A JP 2022551417A JP 2022551417 A JP2022551417 A JP 2022551417A JP 7483910 B2 JP7483910 B2 JP 7483910B2
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- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002153 silicon-carbon composite material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(ii) oxide Chemical class [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
電極組立体及び二次電池
LiaNibCocMdOeAf
[電解質]
[電極組立体の製造方法]
電池モジュール及び電池パック
電力消費装置
実施例
実施例1
正極シートの製造
負極シートの製造
セパレータ
電解液の調製
二次電池の作製
実施例2
実施例3
実施例4
実施例5
実施例6
実施例7
実施例8
実施例9
実施例10
実施例11
実施例12
実施例13
実施例14
実施例15
実施例16
実施例17
実施例18
実施例19
実施例20
実施例21
実施例22
比較例1
比較例2
比較例3
性能テスト部分
(1)正極膜層の容量テスト
(2)各膜層の抵抗テスト
(3)質量エネルギー密度テスト
(4)サイクル性能テスト
Claims (17)
- 正極シート、負極シート、および前記正極シートと前記負極シートとの間に位置するセパレータを含む電極組立体であって、
前記正極シートは、正極集電体及び前記正極集電体の対向する二つの表面に位置する第1の正極膜層及び第2の正極膜層を含み、
前記負極シートは、負極集電体及び前記負極集電体の対向する二つの表面に位置する第1の負極膜層及び第2の負極膜層を含み、
前記第1の正極膜層が前記正極集電体における前記セパレータに近接する側に位置しかつ前記第2の負極膜層が前記負極集電体における前記セパレータに近接する側に位置し、又は、前記第1の正極膜層が前記正極集電体における前記セパレータから離れる側に位置しかつ前記第2の負極膜層が前記負極集電体における前記セパレータから離れる側に位置し、
前記正極シートは0<CAP1/CAP2<1を満たし、CAP1はAh基準の第1の正極膜層の容量を表し、CAP2はAh基準の第2の正極膜層の容量を表し、
前記電極組立体はR4/R3-R2/R1≧0を満たし、R1はΩ基準の第1の正極膜層の抵抗を表し、R2はΩ基準の第2の正極膜層の抵抗を表し、R3はmΩ基準の第1の負極膜層の抵抗を表し、R4はmΩ基準の第2の負極膜層の抵抗を表す、
電極組立体。 - 前記電極組立体は、0≦R4/R3-R2/R1≦20であることを満たす、請求項1に記載の電極組立体。
- 前記正極シートは、0.33≦CAP1/CAP2<1であることを満たす、請求項1又は2に記載の電極組立体。
- R1は、0Ω<R1≦20Ωであり、及び/又は、
R2は、0Ω<R2≦20Ωであり、及び/又は、
R3は、0mΩ<R3≦200mΩであり、及び/又は、
R4は、0mΩ<R4≦200mΩである、
請求項1~3のいずれか一項に記載の電極組立体。 - 前記第1の正極膜層は第1の正極活物質を含み、前記第2の正極膜層は第2の正極活物質を含み、
前記正極シートは下記(1)~(3)のうちの一つ又は複数を満たし、
(1)前記第1の正極膜層の塗布重量は前記第2の正極膜層の塗布重量より小さく、
(2)前記第1の正極活物質のグラム容量は前記第2の正極活物質のグラム容量より小さく、
(3)w1<w2であり、w1は前記第1の正極膜層の合計質量に対して前記第1の正極活物質の質量%含有量であり、w2は前記第2の正極膜層の合計質量に対して前記第2の正極活物質の質量%含有量である、
請求項1~4のいずれか一項に記載の電極組立体。 - 前記負極シートはR4/R3≧1を満たし、かつ、
前記電極組立体は、0≦R4/R3-R2/R1≦20であることを満たす、
請求項1~5のいずれか一項に記載の電極組立体。 - 前記正極シートが0<R2/R1≦20を満たす、請求項6に記載の電極組立体。
- 前記負極シートが1≦R4/R3≦30を満たし、かつ、
前記正極シートが0<R2/R1≦20を満たす、
請求項6に記載の電極組立体。 - 前記負極シートが0<R4/R3<1を満たし、前記正極シートが0<R2/R1<1を満たし、かつ、
前記電極組立体が0≦R4/R3-R2/R1<1であることを満たす、
請求項1~5のいずれか一項に記載の電極組立体。 - 前記負極シートが0<R4/R3<1を満たし、かつ、
前記正極シートが0.05≦R2/R1≦0.9を満たす、
請求項9に記載の電極組立体。 - 前記負極シートが0.05≦R4/R3≦0.9を満たし、かつ、
前記正極シートが0.05≦R2/R1≦0.9を満たす、
請求項9に記載の電極組立体。 - 前記正極シートがR2/R1=1を満たし、かつ前記負極シートがR4/R3=1を満たす、請求項1~5のいずれか一項に記載の電極組立体。
- 外装、電解質及び請求項1~12のいずれか一項に記載の電極組立体を含む、二次電池。
- 前記外装が、収容チャンバー及び開口を有するケースと、前記ケースの開口を閉鎖するカバープレートとを備え、
前記電極組立体が前記収容チャンバー内に収容された、
請求項13に記載の二次電池。 - 請求項13又は14に記載の二次電池を備える、電池モジュール。
- 請求項13又は14に記載の二次電池、請求項15に記載の電池モジュールのうちの一種を備える、電池パック。
- 請求項13又は14に記載の二次電池、請求項15に記載の電池モジュール、請求項16に記載の電池パックのうちの少なくとも一種を備える、電力消費装置。
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EP4195331A4 (en) | 2023-08-02 |
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