JP2020171143A - 制御装置 - Google Patents
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Abstract
Description
以下、実施形態を図面に基づいて説明する。本実施形態は、走行動力源としてモータ13を有する電気自動車に適用されるものとしており、先ずは図1により車両システムの概要を説明する。
続くステップS22において、ΔSOC算出処理を実施する。
また、入出力電流IBは、バッテリ温度TMにより変動するため、誤差量GSもバッテリ温度TMにより変動する。ECU20には、入出力電流IB、バッテリ温度TM及び誤差量GSが予め対応付けられた対応情報が記憶されており、この対応情報を用いて誤差量GSを算出する。
続くステップS72において、初期からの誤差量GSを積算する。続くステップS74において、ステップS72で算出した誤差量GSの積算値とステップS70で算出した初期誤差量GSFとを加算してΔSOCを算出し、ΔSOC算出処理を終了する。初期値ΔSOC(ini)を用いて、ΔSOCは(式4)のように表される。
なお、(式4)におけるΣGS・dtは、誤差量GSの時間積分値であり、(式2)を用いてΣ(J×IB+SGZ)・dtと表すことができる。このうち、IB・dtは、入出力電流IBの時間積分値、すなわち所定周期TSにおけるSOCの変動量を示す。
そこで、本実施形態では、ステップS40において、ステップS18で取得された入出力電流IBに基づいて高圧側制限範囲XHを可変に設定する。具体的には、入出力電流IBに基づいて閉路電圧CCVと高圧側制限範囲XHとが連動して変動するように設定される。これにより、入出力電流IB及びバッテリ温度TMによらず高電圧バッテリ11が過充電状態となることを抑制できる。
以下、第2実施形態について、第1実施形態との相違点を中心に図14を参照しつつ説明する。本実施形態では、制御処理において高電圧バッテリ11の劣化度DEを算出し、算出された劣化度DEに基づいて高圧側制限範囲XH及び低圧側制限範囲XLを可変に設定する点で第1実施形態と異なる。ここで、劣化度DEは、高電圧バッテリ11の初期状態における満充電容量CBに対する現在の満充電容量CBの割合を示す。
なお、上記各実施形態は、以下のように変更して実施してもよい。
Claims (7)
- 蓄電装置(11)の充放電中の端子間電圧(CCV)が、前記蓄電装置の高蓄電状態、又は低蓄電状態における所定の制限範囲(XH,XL)に属する場合に、前記蓄電装置からの電力の入出力が可能な最大電力(WB)を制限する制御装置(20)であって、
前記蓄電装置の充放電中の電流(IB)を所定周期で取得する電流取得部(S18)と、
前記電流取得部により取得された電流に基づいて前記制限範囲を可変に設定する範囲設定部(S40,54)と、を備える制御装置。 - 前記制限範囲は、前記高蓄電状態における高圧側制限範囲(XH)を含み、
前記範囲設定部は、前記蓄電装置が充電中である場合に、前記電流取得部により取得された電流が大きいほど、前記高圧側制限範囲を高圧側に設定する請求項1に記載の制御装置。 - 前記蓄電装置の蓄電状態を示すSOCを算出する制御装置であって、
前記SOCに基づいて、前記蓄電装置の充電中に前記蓄電装置が前記高蓄電状態となったかを判定する高蓄電状態判定部(S30)と、
前記高蓄電状態判定部により前記高蓄電状態となったと判定された場合に、前記最大電力を、前記SOCに関わらず一定の基準入力電力に設定して前記蓄電装置の充電を行う高蓄電制御部(S36,38)と、を備え、
前記範囲設定部は、前記最大電力が前記基準入力電力に設定された場合に、前記電流取得部により取得された電流に基づいて前記高圧側制限範囲を可変に設定する請求項2に記載の制御装置。 - 前記制限範囲は、前記低蓄電状態における低圧側制限範囲(XL)を含み、
前記範囲設定部は、前記蓄電装置が放電中である場合に、前記電流取得部により取得された電流が大きいほど、前記低圧側制限範囲を低圧側に設定する請求項1から請求項3までのいずれか一項に記載の制御装置。 - 前記蓄電装置の蓄電状態を示すSOCを算出する制御装置であって、
前記SOCに基づいて、前記蓄電装置の放電中に前記蓄電装置が前記低蓄電状態となったかを判定する低蓄電状態判定部(S48)と、
前記低蓄電状態判定部により前記低蓄電状態となったと判定された場合に、前記最大電力を、前記SOCに関わらず一定の基準出力電力に設定して前記蓄電装置の放電を行う低蓄電制御部(S50,52)と、を備え、
前記範囲設定部は、前記最大電力が前記基準出力電力に設定された場合に、前記電流取得部により取得された電流に基づいて前記低圧側制限範囲を可変に設定する請求項4に記載の制御装置。 - 前記蓄電装置の温度(TM)を取得する温度取得部(S18)を備え、
前記範囲設定部は、前記電流取得部により取得された電流及び前記温度取得部により取得された温度に基づいて前記制限範囲を可変に設定する請求項1から請求項5までのいずれか一項に記載の制御装置。 - 前記蓄電装置の劣化度(DE)を算出する劣化算出部を備え、
前記範囲設定部は、前記劣化算出部により算出された劣化度に基づいて前記制限範囲を可変に設定する請求項1から請求項6までのいずれか一項に記載の制御装置。
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JP2019071553A JP7111044B2 (ja) | 2019-04-03 | 2019-04-03 | 制御装置 |
DE112020001791.5T DE112020001791T5 (de) | 2019-04-03 | 2020-03-24 | Steuervorrichtung |
PCT/JP2020/012961 WO2020203454A1 (ja) | 2019-04-03 | 2020-03-24 | 制御装置 |
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JP7111044B2 JP7111044B2 (ja) | 2022-08-02 |
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