JP2022523930A - 充電状態推定装置及び方法 - Google Patents
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Abstract
Description
10:バッテリーセル
100:充電状態推定装置
110:測定部
120:制御部
130:保存部
SL1~SL3:第1センシングライン~第3センシングライン
Claims (12)
- バッテリーセルの電流及び電圧を測定し、測定された電流情報及び電圧情報を出力する測定部と、
前記バッテリーセルが充電または放電する充放電時間及び前記充電または放電が中断された充放電中断時間を算出し、前記充放電時間に前記電流情報に応じた前記バッテリーセルの第1充電状態を推定し、前記充放電中断時間と予め設定された基準時間とを比べた結果に基づいて前記電圧情報に応じた前記バッテリーセルの第2充電状態を推定するか否かを決定し、前記第2充電状態が推定された場合、前記充放電中断時間に基づいて前記第1充電状態と前記第2充電状態とを加重合算して第3充電状態を推定し、推定された第3充電状態を前記バッテリーセルの充電状態として決定する制御部と、を含む、充電状態推定装置。 - 前記制御部は、前記充放電中断時間が前記基準時間以上である場合、前記充放電中断時間に前記測定部から受信した複数の電圧情報に基づいて前記第2充電状態を推定する、請求項1に記載の充電状態推定装置。
- 前記制御部は、前記充放電中断時間が前記基準時間未満である場合、前記充放電中断時間に前記測定部から受信した複数の電圧情報のうち電圧変曲点があるか否かを確認し、前記電圧変曲点が確認された場合のみに前記第2充電状態を推定する、請求項2に記載の充電状態推定装置。
- 前記制御部は、前記バッテリーセルの短期分極成分の分極方向と長期分極成分の分極方向とが相異なるものになる時間が含まれるように前記基準時間を予め設定する、請求項1から3のいずれか一項に記載の充電状態推定装置。
- 前記制御部は、関数最適化技法を用いて前記充放電中断時間に前記測定部から受信した複数の電圧情報から前記バッテリーセルの開放電圧を推定する、請求項4に記載の充電状態推定装置。
- 前記制御部は、予め設定されたルックアップテーブルに基づいて、推定された開放電圧に対応する第2充電状態を推定する、請求項5に記載の充電状態推定装置。
- 前記制御部は、前記充放電中断時間に応じて第1加重値及び第2加重値を設定し、設定された第1加重値及び第2加重値を前記第1充電状態及び前記第2充電状態にそれぞれ付け加えて、加重値が付け加えられた第1充電状態と第2充電状態とを合算して前記第3充電状態を推定する、請求項1から6のいずれか一項に記載の充電状態推定装置。
- 前記制御部は、前記充放電中断時間と前記第1加重値とが互いに反比例するように設定し、前記充放電中断時間と前記第2加重値とが互いに比例するように設定する、請求項7に記載の充電状態推定装置。
- 請求項1から8のいずれか一項に記載の充電状態推定装置を含むバッテリーパック。
- 請求項1から8のいずれか一項に記載の充電状態推定装置を含む自動車。
- バッテリーセルの電流及び電圧を測定して電流情報及び電圧情報を取得する電流電圧測定段階と、
前記バッテリーセルが充電または放電する充放電時間及び前記充電または放電が中断された充放電中断時間を算出する時間算出段階と、
前記充放電時間に前記電流情報に応じた前記バッテリーセルの第1充電状態を推定する第1充電状態推定段階と、
前記充放電中断時間と予め設定された基準時間とを比べた結果に基づいて、前記電圧情報に応じた前記バッテリーセルの第2充電状態を推定する第2充電状態推定段階と、
前記充放電中断時間に基づいて、前記第1充電状態と前記第2充電状態とを加重合算して第3充電状態を推定する第3充電状態推定段階と、
推定された第3充電状態を前記バッテリーセルの充電状態として決定するバッテリーセルの充電状態推定段階と、を含む、充電状態推定方法。 - 前記第1充電状態推定段階の後、前記充放電時間が前記基準時間未満である場合、前記充放電中断時間に取得された複数の電圧情報のうち電圧変曲点があるか否かを確認する変曲点確認段階を含み、
前記第2充電状態推定段階は、前記充放電中断時間が前記基準時間以上である場合または前記変曲点確認段階で前記電圧変曲点が確認された場合のみに前記第2充電状態を推定する、請求項11に記載の充電状態推定方法。
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PCT/KR2020/013498 WO2021075771A1 (ko) | 2019-10-18 | 2020-10-05 | 충전 상태 추정 장치 및 방법 |
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CN113795760A (zh) | 2021-12-14 |
EP3982137A4 (en) | 2022-08-03 |
JP7302798B2 (ja) | 2023-07-04 |
ES2972493T3 (es) | 2024-06-13 |
US20220187382A1 (en) | 2022-06-16 |
HUE065235T2 (hu) | 2024-05-28 |
WO2021075771A1 (ko) | 2021-04-22 |
EP3982137A1 (en) | 2022-04-13 |
CN113795760B (zh) | 2024-05-17 |
US12013440B2 (en) | 2024-06-18 |
EP3982137B1 (en) | 2024-01-31 |
KR20210046407A (ko) | 2021-04-28 |
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