JP7200954B2 - 二次電池の診断装置及び回復方法 - Google Patents
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
圧縮荷重:20kN
SOC範囲:0%~100%
充放電レート:1C
回復処理時間:1時間
上記回復処理により、リチウムイオン二次電池の容量が初期状態と比較して20%低下まで回復し、リチウムイオン二次電池の電気抵抗が初期状態と比較して40%増加まで回復した。すなわち、上記回復処理により、電極の歪みを回復させて、電極の歪みに起因した抵抗上昇を抑制することができた。また、比較のため、上記回復処理の代わりに、電池100を60℃で40時間放置する処理を行なった。しかし、こうした高温処理によっては、電極の歪みに起因した抵抗上昇は回復しなかった。
Claims (9)
- 正極電極と負極電極とが交互に配置された構造を有する二次電池の診断装置であって、
圧縮前の前記二次電池の電気抵抗の大きさを示す第1抵抗値を取得した後、前記二次電池の少なくとも一部を圧縮し、圧縮後の前記二次電池の電気抵抗の大きさを示す第2抵抗値を取得する情報取得部と、
前記第1抵抗値と前記第2抵抗値とを用いて、前記圧縮による前記二次電池の電気抵抗の低下量が所定値よりも大きいか否かを判断する第1判断部と、
前記第1判断部による判断結果を用いて、電極の歪みに起因した抵抗上昇が前記二次電池に生じているか否かを判断する第2判断部とを備える、二次電池の診断装置。 - 前記第2判断部は、前記電極の歪みに起因した抵抗上昇が前記二次電池に生じていると判断した場合に、所定の回復処理を実行するように構成され、
前記所定の回復処理は、前記二次電池を圧縮するための荷重を前記二次電池に付与した状態で、所定SOC値以下に放電された前記二次電池の充電を行なうことを含む、請求項1に記載の二次電池の診断装置。 - 前記所定の回復処理は、前記二次電池を圧縮するための荷重を前記二次電池に付与した状態で、前記二次電池を前記所定SOC値以下にするための放電と、前記所定SOC値以下に放電された二次電池の充電とを、前記二次電池の電気抵抗が所定値以下になるまで繰り返し行なうことを含む、請求項2に記載の二次電池の診断装置。
- 前記情報取得部は、前記二次電池に外側から荷重を付与することにより、前記二次電池を圧縮するように構成される、請求項1~3のいずれか1項に記載の二次電池の診断装置。
- 前記情報取得部は、前記二次電池の前記負極電極を膨張させることにより、前記二次電池の前記正極電極を圧縮するように構成される、請求項1~3のいずれか1項に記載の二次電池の診断装置。
- 正極電極と負極電極とが積層された構造を有する二次電池の回復方法であって、
前記二次電池の少なくとも一部を圧縮する第1圧縮工程と、
前記第1圧縮工程による前記二次電池の電気抵抗の低下量が所定値よりも大きい場合に、前記二次電池に外側から荷重を付与することにより前記二次電池を圧縮する第2圧縮工程と、
前記第2圧縮工程により前記二次電池が圧縮された状態で、所定SOC値以下に放電された前記二次電池の充電を行なう回復工程とを含む、二次電池の回復方法。 - 前記二次電池は、リチウムイオン二次電池であり、
前記二次電池の前記負極電極は、炭素系電極又はシリコン系電極である、請求項6に記載の二次電池の回復方法。 - 前記第1圧縮工程では、前記負極電極が膨張するまで前記二次電池のSOCを高めることにより前記正極電極を圧縮する、請求項7に記載の二次電池の回復方法。
- 前記正極電極と前記負極電極とはセパレータを介して交互に配置された状態で巻芯に巻回されて電極巻回体を形成しており、
前記巻芯は、前記電極巻回体の巻回軸に垂直な方向を長手方向とし、
前記巻芯は、弾性材料を含み、前記電極巻回体から受ける押圧力によって前記長手方向に伸びるように構成される、請求項6~8のいずれか1項に記載の二次電池の回復方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020005875A JP7200954B2 (ja) | 2020-01-17 | 2020-01-17 | 二次電池の診断装置及び回復方法 |
DE102020134822.3A DE102020134822A1 (de) | 2020-01-17 | 2020-12-23 | Diagnosevorrichtung für eine sekundärbatterie und wiederherstellungsverfahren für die sekundärbatterie |
CN202011577588.9A CN113140810B (zh) | 2020-01-17 | 2020-12-28 | 二次电池的诊断装置以及恢复方法 |
KR1020200186139A KR20210093162A (ko) | 2020-01-17 | 2020-12-29 | 이차 전지의 진단 장치 및 회복 방법 |
US17/138,077 US11757141B2 (en) | 2020-01-17 | 2020-12-30 | Diagnostic device for secondary battery and recovery method for secondary battery |
US17/897,912 US11811030B2 (en) | 2020-01-17 | 2022-08-29 | Diagnostic device for secondary battery and recovery method for secondary battery |
US18/360,165 US20230378560A1 (en) | 2020-01-17 | 2023-07-27 | Diagnostic device for secondary battery and recovery method for secondary battery |
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JP2020005875A JP7200954B2 (ja) | 2020-01-17 | 2020-01-17 | 二次電池の診断装置及び回復方法 |
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JP7200954B2 true JP7200954B2 (ja) | 2023-01-10 |
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KR (1) | KR20210093162A (ja) |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010032349A (ja) | 2008-07-29 | 2010-02-12 | Toyota Motor Corp | 充電深度計測機構及び計測方法、並びに該計測機構を備える二次電池 |
JP5765258B2 (ja) | 2012-02-01 | 2015-08-19 | トヨタ自動車株式会社 | 二次電池の制御装置および制御方法 |
US20160028129A1 (en) | 2014-07-23 | 2016-01-28 | Palo Alto Research Center Incorporated | Embedded fiber optic cables for battery management |
JP2016100237A (ja) | 2014-11-25 | 2016-05-30 | 日立オートモティブシステムズ株式会社 | 角形二次電池モジュール |
JP2017195059A (ja) | 2016-04-19 | 2017-10-26 | 株式会社Gsユアサ | 蓄電素子の出力の回復方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN101383434B (zh) * | 2008-10-15 | 2011-04-20 | 中国移动通信集团甘肃有限公司 | 一种铅酸蓄电池容量恢复方法、装置和系统 |
JP2017009422A (ja) * | 2015-06-22 | 2017-01-12 | オリジン電気株式会社 | 蓄電池診断用測定装置及び蓄電池診断用測定方法 |
JP6478121B2 (ja) * | 2016-09-07 | 2019-03-06 | トヨタ自動車株式会社 | 二次電池の回復処理方法および再利用処理方法 |
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- 2020-01-17 JP JP2020005875A patent/JP7200954B2/ja active Active
- 2020-12-23 DE DE102020134822.3A patent/DE102020134822A1/de active Pending
- 2020-12-28 CN CN202011577588.9A patent/CN113140810B/zh active Active
- 2020-12-29 KR KR1020200186139A patent/KR20210093162A/ko unknown
- 2020-12-30 US US17/138,077 patent/US11757141B2/en active Active
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2022
- 2022-08-29 US US17/897,912 patent/US11811030B2/en active Active
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- 2023-07-27 US US18/360,165 patent/US20230378560A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010032349A (ja) | 2008-07-29 | 2010-02-12 | Toyota Motor Corp | 充電深度計測機構及び計測方法、並びに該計測機構を備える二次電池 |
JP5765258B2 (ja) | 2012-02-01 | 2015-08-19 | トヨタ自動車株式会社 | 二次電池の制御装置および制御方法 |
US20160028129A1 (en) | 2014-07-23 | 2016-01-28 | Palo Alto Research Center Incorporated | Embedded fiber optic cables for battery management |
JP2016025081A (ja) | 2014-07-23 | 2016-02-08 | パロ アルト リサーチ センター インコーポレイテッド | 電池管理のための埋め込み光ファイバケーブル |
JP2016100237A (ja) | 2014-11-25 | 2016-05-30 | 日立オートモティブシステムズ株式会社 | 角形二次電池モジュール |
JP2017195059A (ja) | 2016-04-19 | 2017-10-26 | 株式会社Gsユアサ | 蓄電素子の出力の回復方法 |
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US20210226270A1 (en) | 2021-07-22 |
JP2021114388A (ja) | 2021-08-05 |
DE102020134822A1 (de) | 2021-07-22 |
CN113140810A (zh) | 2021-07-20 |
US11811030B2 (en) | 2023-11-07 |
US11757141B2 (en) | 2023-09-12 |
KR20210093162A (ko) | 2021-07-27 |
US20230378560A1 (en) | 2023-11-23 |
US20220407128A1 (en) | 2022-12-22 |
CN113140810B (zh) | 2024-02-20 |
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