JP2012255763A - 電極厚さ変化測定装置 - Google Patents
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Abstract
【解決手段】本発明に係る電極厚さ変化測定装置100は、充放電時における正極または負極の厚さ変化を測定する装置であり、第一硬質平板1と、第一電極2と、測定電極台座3と、第二電極4と、第二硬質平板(電極押さえ)5とを順に積層した積層体を電解質と接触する状態で密閉した電極厚さ変化測定用セル10と、第一電極に荷重を付加する荷重負荷手段11と、第一リード12および第二リード13を介して、電極厚さ変化測定用セル10内の第一電極(図示しない)および第二電極(図示しない)に電気的に接続され、充放電を行う充放電装置14と、第一電極の充放電時の変位を測定する変位計15とを備え、測定電極台座3と第二硬質平板5との間隔は、第二電極4が膨張しても変化しない構成となっている。
【選択図】 図2
Description
1a、1b、1c、1d、1e、1f、1g、1h 分割板
2、2a 第一電極
2b ドープ電極
3 測定電極台座
3a 多孔体材料
3b 電子絶縁性材料
3c イオン伝導性硬質板
3d 脚部
3e セパレータ
3f、3g、3h 補助脚部
4 第二電極
5 第二硬質平板
10 電極厚さ変化測定用セル
11、11a、11b、11c、11d 荷重負荷手段
12 第一リード
12a、12b リード
13 第二リード
14 充放電装置
15 変位計
16 データロガー
17 固体電解質
18、18a、18b、18c、18d、18e、18f、18g、18h 参照電極
20 接合部材
21 スリーブ
22 上ボディ
23 スプリング
24 第一電極押さえ
24a 円柱部
24b 円盤部(第一硬質平板)
25 第一電極
26 測定電極台座
27 第二電極
28 第二電極押さえ(第二硬質平板)
29 下ボディ
30 電極厚さ変化測定用セル
100、101 本発明に係る電極厚さ変化測定装置
Claims (14)
- 充放電時における正極または負極の厚さ変化を測定する装置であって、
第一硬質平板と、第一電極と、測定電極台座と、第二電極と、第二硬質平板とを順に積層した積層体を電解質と接触する状態で密閉した電極厚さ変化測定用セルと、
該第一電極に荷重を付加する荷重負荷手段と、
該第一電極および該第二電極に電気的に接続され、充放電を行う充放電装置と、
該第一電極の充放電時の変位を測定する変位計と
を備え、
該測定電極台座と該第二硬質平板との間隔が、該第二電極が膨張しても変化しないことを特徴とする電極厚さ変化測定装置。 - 前記電解質として、電解液、ポリマー電解質および固体電解質の一種以上を用いたことを特徴とする請求項1に記載の電極厚さ変化測定装置。
- 前記測定電極台座として、多孔質絶縁部材および/またはイオン伝導性硬質板を用いたことを特徴とする請求項1または2に記載の電極厚さ変化測定装置。
- 充放電時における正極または負極の厚さ変化を測定する装置であって、
第一硬質平板と、第一電極と、多孔質絶縁部材と、第二電極と、第二硬質平板とを順に積層した積層体を電解液に浸漬した状態で密閉した電極厚さ変化測定用セルと、
該第一電極に荷重を付加する荷重負荷手段と、
該第一電極および該第二電極に電気的に接続され、充放電を行う充放電装置と、
該第一電極の充放電時の変位を測定する変位計と
を備え、
該多孔質絶縁部材と該第二硬質平板との間隔が、該第二電極が膨張しても変化しないことを特徴とする電極厚さ変化測定装置。 - 前記測定電極台座または前記多孔質絶縁部材と前記第二硬質平板との間隔が、前記第二電極の最膨張時の厚さよりも大きいことを特徴とする請求項1から4までのいずれかに記載の電極厚さ変化測定装置。
- 前記電極厚さ変化測定用セルが、前記積層体を電解質に接触する状態でラミネートフィルムによって密閉したものであることを特徴とする請求項1から5までのいずれかに記載の電極厚さ変化測定装置。
- 前記多孔質絶縁部材が、硬質発泡ガラスで構成されていることを特徴とする請求項4に記載の電極厚さ変化測定装置。
- 前記変位計での測定データを前記充放電装置に入力し、該測定データの時間軸と充放電の時間時間軸とを同期させることを特徴とする請求項1から7までのいずれかに記載の電極厚さ変化測定装置。
- 前記変位計での測定データを電圧に変換した後、前記充放電装置に入力することを特徴とする請求項1から8までのいずれかに記載の電極厚さ変化測定装置。
- 前記測定電極台座または前記多孔質絶縁部材と前記第二硬質平板との間に、温度センサを配置したことを特徴とする請求項1から9までのいずれかに記載の電極厚さ変化測定装置。
- 前記第一硬質板が、前記第一電極上面よりも小さい面積を有する複数の分割板で構成され、
前記荷重負荷手段が、それぞれの分割板に荷重を付加するものであり、
前記変位計が、それぞれの分割板の充放電時の変位を測定するものであることを特徴とする請求項1から10までのいずれかに記載の電極厚さ変化測定装置。 - さらに、1以上の参照電極を配置したことを特徴とする請求項1から11までのいずれかに記載の電極厚さ変化測定装置。
- 前記参照電極での測定データを、前記変位計での測定データとともに、前記充放電装置に入力し、これらの測定データの時間軸と充放電の時間時間軸とを同期させることを特徴とする請求項12に記載の電極厚さ変化測定装置。
- 前記変位計が、ロードセルで構成され、充放電時の圧力変化を測定するものであることを特徴とする請求項1から13までのいずれかに記載の電極厚さ変化測定装置。
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JP2016207425A (ja) * | 2015-04-21 | 2016-12-08 | 株式会社コベルコ科研 | 観察用試料台 |
CN105865392A (zh) * | 2016-05-25 | 2016-08-17 | 北京新能源汽车股份有限公司 | 用于软包动力电池厚度变化测量的测量装置 |
CN108663273A (zh) * | 2018-04-11 | 2018-10-16 | 上海空间电源研究所 | 测量锂离子电池机械形变应力的试验方法 |
CN108663273B (zh) * | 2018-04-11 | 2021-08-10 | 上海空间电源研究所 | 测量锂离子电池机械形变应力的试验方法 |
WO2019235719A1 (ko) * | 2018-06-04 | 2019-12-12 | 주식회사 엘지화학 | 전지셀, 이차 전지 및 전지셀 제조 방법 |
US11631846B2 (en) | 2018-06-04 | 2023-04-18 | Lg Energy Solutions, Ltd. | Battery cell, secondary battery, and method of manufacturing battery cell |
CN109974655A (zh) * | 2019-02-27 | 2019-07-05 | 天津锦美碳材科技发展有限公司 | 一种在线无压力检测锂电池硅碳负极极片膨胀的设备与方法 |
CN114279377A (zh) * | 2021-12-08 | 2022-04-05 | 蜂巢能源科技股份有限公司 | 电池材料充放电过程体积变化的评估系统和评价方法 |
CN114279377B (zh) * | 2021-12-08 | 2024-03-22 | 蜂巢能源科技股份有限公司 | 电池材料充放电过程体积变化的评估系统和评价方法 |
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