JP2023515838A - 二次電池診断装置及び方法 - Google Patents
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Abstract
Description
容量=a×PL×PA
容量=0.9×3×20,000=54,000mAh=54Ah
200:電圧測定ユニット
300:プロセッサ
Rp:正極参照プロファイル
Rn:負極参照プロファイル
Rp':正極調整プロファイル
Rn':負極調整プロファイル
Claims (10)
- 参照電池の充電または放電に対する正極参照プロファイル及び負極参照プロファイルを保存するメモリユニットと、
充電または放電過程中に対象電池の電圧を測定する電圧測定ユニットと、
前記電圧測定ユニットによって測定された電圧に基づいて充放電測定プロファイルを生成し、前記メモリユニットに保存された正極参照プロファイル及び負極参照プロファイルから取得したシミュレーションプロファイルと前記生成された充放電測定プロファイルとを比較して、前記シミュレーションプロファイルと前記充放電測定プロファイルとの誤差が一定水準以内になるようにする正極調整プロファイル及び負極調整プロファイルを決定するプロセッサと、を含む、二次電池診断装置。 - 前記プロセッサは、前記正極参照プロファイル及び前記負極参照プロファイルのうちの少なくとも一つを水平方向に移動させることで、前記正極調整プロファイル及び前記負極調整プロファイルを決定する、請求項1に記載の二次電池診断装置。
- 前記プロセッサは、前記正極参照プロファイル及び前記負極参照プロファイルのうちの少なくとも一つを水平方向にスケール調整することで、前記正極調整プロファイル及び前記負極調整プロファイルを決定する、請求項1または2に記載の二次電池診断装置。
- 前記電圧測定ユニットは、前記対象電池の満放電電圧及び満充電電圧を測定し、
前記プロセッサは、前記満放電電圧に基づいて前記正極調整プロファイルの正極開始値または前記負極調整プロファイルの負極開始値を推定し、前記満充電電圧に基づいて前記正極調整プロファイルの正極最終値及び前記負極調整プロファイルの負極最終値を推定する、請求項1から3のいずれか一項に記載の二次電池診断装置。 - 前記プロセッサは、前記正極最終値と前記正極開始値との差または前記負極最終値と前記負極開始値との差に基づいて、前記対象電池の容量を把握する、請求項4に記載の二次電池診断装置。
- 前記プロセッサは、前記正極調整プロファイル及び前記負極調整プロファイルに基づいて、前記対象電池の正極未使用領域及び負極未使用領域を把握する、請求項1から5のいずれか一項に記載の二次電池診断装置。
- 前記プロセッサは、前記シミュレーションプロファイルを上下方向に平行移動させることで前記充放電測定プロファイルとの誤差が減少する場合、前記平行移動の結果を用いて前記対象電池の内部抵抗増加を把握する、請求項1から6のいずれか一項に記載の二次電池診断装置。
- 請求項1から7のいずれか一項に記載の二次電池診断装置を含む、バッテリーパック。
- 請求項1から7のいずれか一項に記載の二次電池診断装置を含む、自動車。
- 参照電池の充電または放電に対する正極参照プロファイル及び負極参照プロファイルを保存する保存段階と、
対象電池を充電または放電させながら電圧を測定する電圧測定段階と、
前記電圧測定段階で測定された電圧に基づいて充放電測定プロファイルを生成する生成段階と、
前記保存段階で保存された正極参照プロファイル及び負極参照プロファイルから取得したシミュレーションプロファイルと前記生成段階で生成された充放電測定プロファイルとを比較する比較段階と、
前記シミュレーションプロファイルと前記充放電測定プロファイルとの誤差が一定水準以内になるようにする正極調整プロファイル及び負極調整プロファイルを決定する決定段階と、を含む、二次電池診断方法。
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KR10-2020-0184944 | 2020-12-28 | ||
KR1020200184944A KR20220093840A (ko) | 2020-12-28 | 2020-12-28 | 이차 전지 진단 장치 및 방법 |
PCT/KR2021/018292 WO2022145776A1 (ko) | 2020-12-28 | 2021-12-03 | 이차 전지 진단 장치 및 방법 |
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JP2024010410A (ja) * | 2022-07-12 | 2024-01-24 | 株式会社Gsユアサ | 推定装置、診断装置、推定方法、推定プログラム及び診断方法 |
WO2024031261A1 (zh) * | 2022-08-08 | 2024-02-15 | 宁德时代新能源科技股份有限公司 | 电池的检测方法、装置、设备、存储介质和程序产品 |
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WO2015045015A1 (ja) * | 2013-09-25 | 2015-04-02 | 株式会社日立製作所 | 二次電池の状態判定方法、二次電池の状態判定装置、二次電池システム、および、状態判定装置を有する充放電制御装置 |
KR20160048585A (ko) * | 2014-10-24 | 2016-05-04 | 주식회사 엘지화학 | 이차전지의 퇴화에 따른 soc-ocv 프로파일 추정 방법 |
JP2018524602A (ja) * | 2015-07-27 | 2018-08-30 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 電池の現在の開路電圧曲線を推定するための方法及び装置 |
KR20190073065A (ko) * | 2017-12-18 | 2019-06-26 | 주식회사 엘지화학 | 배터리 충전관리 장치 및 방법 |
KR20190084686A (ko) * | 2018-01-09 | 2019-07-17 | 주식회사 엘지화학 | 배터리 셀 성능 테스트 장치 및 방법 |
KR20190106126A (ko) * | 2018-03-07 | 2019-09-18 | 주식회사 엘지화학 | Soc-ocv 프로파일 추정 방법 및 장치 |
JP2019184581A (ja) * | 2018-04-17 | 2019-10-24 | 三菱電機株式会社 | 蓄電池診断装置および蓄電池診断方法、並びに蓄電池制御システム |
CN111781504A (zh) * | 2020-08-03 | 2020-10-16 | 北京理工大学 | 一种锂离子动力电池老化状态识别与开路电压重构方法 |
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KR20220093840A (ko) | 2022-07-05 |
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