JP7389217B2 - 電池状態予測装置および電池状態予測方法 - Google Patents
電池状態予測装置および電池状態予測方法 Download PDFInfo
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- JP7389217B2 JP7389217B2 JP2022500509A JP2022500509A JP7389217B2 JP 7389217 B2 JP7389217 B2 JP 7389217B2 JP 2022500509 A JP2022500509 A JP 2022500509A JP 2022500509 A JP2022500509 A JP 2022500509A JP 7389217 B2 JP7389217 B2 JP 7389217B2
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- 238000000034 method Methods 0.000 title claims description 23
- 230000007613 environmental effect Effects 0.000 claims description 73
- 238000004891 communication Methods 0.000 claims description 33
- 230000006866 deterioration Effects 0.000 claims description 23
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims 2
- 238000002474 experimental method Methods 0.000 description 7
- 238000010304 firing Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Description
本開示の一実施形態に係る電池状態予測装置において、前記予め設定された誤差範囲は5%であることを特徴とする。
本開示の一実施形態に係る電池状態予測方法において、前記予め設定された誤差範囲は5%であることを特徴とする。
電池状態予測システム1は、車両100、電池状態予測装置108としてのサーバ、および実験センター110を含むことができる。
上位コントローラ106は、電池セル情報および環境情報をサーバ108に伝送する。
サーバ108は、受信された電池セル情報、環境情報、および実験データ上の情報を用いて、当該車両の電池セルの状態を予測することができる。サーバ108は、電池状態予測装置の機能を行う構成であって、以下では、「サーバ」および「電池状態予測装置」を混用して記載する。
サーバ108は、予測された車両の走行可能距離、車両の急速充電電流および時間、および電池セルの発火可能性に対する結果値を格納する。
電池状態予測装置(図1のサーバと対応)108は、第1通信部200、第2通信部202、状態予測部204、走行可能距離予測部206、急速充電予測部208、電池セル発火予測部210、格納部211、および制御部212を含む。
電池セル情報は、電池セルの電流、温度、および電圧値を含む。また、環境情報は、車両の走行環境に対する情報であって、温度、地域、天気、走行環境、時間情報などを含むことができる。
格納部211は、車両の予測された走行可能距離、急速充電電流および時間、およびセルの発火可能性を格納する。
具体的に、第1通信部200が、車両に、予測された電池セルの状態、走行可能距離、急速充電電流および時間、およびセルの発火可能性情報を伝送する。
車両100には、電池セル102をモニターし制御する電池管理システム104が含まれる。電池管理システム104は、電池セル102の温度、電流、および電圧を測定する(S300)。電池管理システム104は、リアルタイムで測定した電池セル102の温度、電流、および電圧値を含む電池セル情報を上位コントローラ106に伝送する。
上位コントローラ106は、電池セル情報および環境情報をサーバ108に伝送する(S304)。
格納部211は、車両の予測された走行可能距離、急速充電電流および時間、およびセルの発火可能性を格納する(S322)。
車両100には、電池セル102をモニターし制御する電池管理システム104が含まれる。電池管理システム104は、電池セル102の温度、電流、および電圧を測定する(S400)。電池管理システム104は、リアルタイムで測定した電池セル102の温度、電流、および電圧値を含む電池セル情報を上位コントローラ106に伝送する。
上位コントローラ106は、電池セル情報および環境情報をサーバ108に伝送する(S404)。
第1通信部200は、予測された走行可能距離、急速充電電流および時間、およびセルの発火可能性情報を車両に伝送する(S424)。
Claims (10)
- 電池パックに含まれた電池管理システムにより測定された複数の電池セルの温度、電流、及び電圧データの少なくとも1つを受信し、当該電池セルが用いられる車両から前記車両が走行中の第1環境情報を受信する第1通信部と、
外部から複数の環境での電池セルまたはパックの状態に対する実験データを受信する第2通信部と、
前記受信された複数の電池セルそれぞれの温度、電流、及び電圧の少なくとも1つと、前記第1環境情報と、前記実験データとを用いて、電池状態を予測する電池状態予測部と、を含み、
前記電池状態は、電池セルの充電状態および電池セルの劣化状態の少なくとも一方を含み、
前記電池セルの充電状態に基づいて、前記車両の走行距離を予測する走行可能距離予測部と、
前記電池セルの劣化状態に基づいて、前記電池セルが含まれた電池パックの急速充電電流および時間を予測する急速充電予測部と、
前記実験データに含まれた電池セルの発火データを用いて、電池セルの発火可能性を予測する電池セル発火予測部と、をさらに含み、
前記第1通信部は、前記走行可能距離予測部、前記急速充電予測部、または前記電池セル発火予測部により予測された結果値のうち少なくとも1つを前記電池管理システムに送信し、
前記第1通信部により送信された前記走行可能距離予測部、前記急速充電予測部、または前記電池セル発火予測部により予測された結果値が、前記車両のアルゴリズムにより算出された走行可能距離、急速充電電流および時間、または電池セルの発火可能性の予測結果値に対して予め設定された誤差範囲から外れると、前記第1通信部は前記車両から前記車両の第2環境情報を受信し、
前記第1環境情報と前記第2環境情報が同一な値であると、前記車両のアルゴリズムが異常であると診断し、前記第1通信部が前記車両のアルゴリズム異常信号を送信するようにし、前記第1環境情報と前記第2環境情報が同一ではないと、前記電池セルの状態予測部が第2環境情報を用いて再び電池セルの状態を予測するようにする制御部をさらに含む、
電池状態予測装置。 - 前記走行可能距離予測部、前記急速充電予測部、および前記電池セル発火予測部がそれぞれ第1時間の間隔で予め設定された回数だけ予測を行うことを1周期として予測を行い、1周期の予測の間、前記車両が走行する環境を示すデータの変化量が予め設定された第1数値以下であるか否かを判断する制御部をさらに含み、
前記1周期の予測の間、前記車両の環境を示すデータの変化量が予め設定された第1数値以下であると、前記走行可能距離予測部、前記急速充電予測部、および前記電池セル発火予測部の前記結果値を前記車両に伝送し、
前記1周期の予測の間、前記車両の環境を示すデータの変化量が予め設定された第1数値超過であると、前記走行可能距離予測部、前記急速充電予測部、および前記電池セル発火予測部は、変化した環境条件で再び結果値を予測する、請求項1に記載の電池状態予測装置。 - 前記1周期は0.7秒以内に設定され、前記予め設定された回数は前記1周期に基づいて決定される、請求項2に記載の電池状態予測装置。
- 前記予め設定された誤差範囲は5%である、請求項1に記載の電池状態予測装置。
- 前記第1通信部により送信された前記走行可能距離予測部、前記急速充電予測部、または前記電池セル発火予測部により予測された結果値が、前記車両のアルゴリズムにより算出された走行可能距離、急速充電電流および時間、または電池セルの発火可能性の予測結果値が予め設定された誤差範囲から外れないと、
前記走行可能距離予測部、前記急速充電予測部、または前記電池セル発火予測部により予測された結果値が、車両のディスプレイ上に表示される、請求項1から4のいずれか一項に記載の電池状態予測装置。 - 電池セルの温度、電流、および電圧の少なくとも1つと、車両が走行する環境情報とを用いて、電池セルの状態を予測する電池状態予測装置により行われる電池状態予測方法であって、
車両の電池管理システムにより測定された電池セルの温度、電流、および電圧の少なくとも1つと、前記車両が走行する第1環境情報と、実験データとを用いて、電池セルの状態を予測する第1ステップと、
前記予測された電池セルの状態を用いて、前記車両の走行可能距離、前記車両の急速充電電流および時間の少なくとも1つを予測する第2ステップと、を含み、
前記実験データは、複数の環境条件での電池セルの状態に対する実験結果に対するものであり、
前記実験データは、電池セルの発火データをさらに含み、
前記第2ステップは、予測された前記電池セルの状態と前記電池セルの発火データとを用いて、前記電池セルの発火可能性を予測するステップを含み、
予測された前記車両の走行可能距離、前記急速充電電流および時間、前記電池セルの発火可能性情報と、前記車両のアルゴリズムにより算出された走行可能距離、急速充電電流および時間、または電池セルの発火可能性の予測結果値との差が予め設定された誤差範囲から外れると、前記車両から新しい電池セルの温度、電流、および電圧と、車両が走行する第2環境情報とを受信して、前記第1環境情報と前記第2環境情報が同一な値であると、前記車両のアルゴリズムが異常であると診断し、前記車両のアルゴリズム異常信号を送信するようにし、前記第1環境情報と前記第2環境情報が同一ではないと、前記第2環境情報を用いて前記第1ステップを再び行う、
電池状態予測方法。 - 前記電池セルの状態は、電池セルの充電状態および電池セルの劣化状態を含み、
前記車両の走行可能距離は、前記電池セルの充電状態を用いて予測され、前記車両の急速充電電流および時間は、前記電池セルの劣化状態を用いて予測される、請求項6に記載の電池状態予測方法。 - 前記第2ステップは、第1時間の間隔で予め設定された回数だけ行われることを1周期として行われ、第2ステップが1周期の間に行われる間、前記車両が走行する環境を示すデータの変化量が予め設定された第1数値以下であるか否かを判断するステップをさらに含み、
前記環境を示すデータの変化量が前記第1数値以下であると、前記予測された走行可能距離、急速充電電流および時間、および前記電池セルの発火可能性情報を前記車両に伝送し、
前記環境を示すデータの変化が前記第1数値超過であると、前記第1ステップを再び行う、請求項6に記載の電池状態予測方法。 - 前記1周期は0.7秒以内に設定され、
前記予め設定された回数は前記1周期に基づいて決定される、請求項8に記載の電池状態予測方法。 - 前記予め設定された誤差範囲は5%である、請求項6に記載の電池状態予測方法。
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EP3981642A1 (en) | 2022-04-13 |
WO2021020817A1 (ko) | 2021-02-04 |
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