JP2017030509A - 電源制御装置 - Google Patents
電源制御装置 Download PDFInfo
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
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- B60K6/48—Parallel type
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- B60L2240/00—Control parameters of input or output; Target parameters
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- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
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Abstract
Description
本発明に係る電源制御装置は、上述した課題を解決するため、発電機と、前記発電機で発電された電力を蓄電可能な蓄電手段と、前記蓄電手段からの電力で駆動可能な一又は複数の補機とを備える車両の電源制御装置であって、前記補機に印加される電圧の平均値が小さくなるように前記発電機の発電電圧を設定することで、前記補機の消費電力を低減する補機電力低減制御を実行する第1制御手段と、前記補機が高負荷運転する場合に、前記補機電力低減制御を禁止して、前記発電機の発電電圧を前記補機電力低減制御中の電圧よりも高くする高電圧発電制御を実行する第2制御手段と、前記補機電力低減制御及び前記高電圧発電制御の相互の切り替わり頻度が所定頻度以上になるか否かを判定する頻度判定手段と、前記切り替わり頻度が前記所定頻度以上である場合には、前記切り替わり頻度が前記所定頻度未満である場合と比べて、前記補機電力低減制御における前記発電機の下限電圧を高い値に設定する下限電圧設定手段とを備える。
本発明に係る電源制御装置の一態様では、前記車両は、動力源としての内燃機関を備える車両であり、前記頻度判定手段は、前記内燃機関の冷却水の水温が所定の第1温度以上である場合に、前記切り替わり頻度が前記所定頻度以上になると判定する。
本発明に係る電源制御装置の他の態様では、前記車両は、動力源としての電動機及び前記電動機の電力供給源である電池を備える車両であり、前記頻度判定手段は、前記電池の温度が所定の第2温度以上である場合に、前記切り替わり頻度が前記所定頻度以上になると判定する。
本発明に係る電源制御装置の他の態様では、前記蓄電手段の充電量の目標値である目標充電量を設定する設定手段と、前記蓄電手段の現在の充電量を検出する検出手段とを備え、前記下限電圧設定手段は、(i)前記現在の充電量が前記目標充電量よりも高い場合には、前記下限電圧を前記蓄電手段の開放電圧よりも低い値に設定し、(ii)前記現在の充電量が前記目標充電量と同じ場合には、前記下限電圧を前記蓄電手段の開放電圧と同じ値に設定し、(iii)前記現在の充電量が前記目標充電量よりも低い場合には、前記下限電圧を前記蓄電手段の開放電圧よりも高い値に設定する。
始めに、図1を参照し、本実施形態に係るハイブリッド車両の構成について説明する。ここに図1は、本実施形態に係るハイブリッド車両の全体構成を示す概略構成図である。
引き続き図1を参照しながら、ECU100の具体的な構成について説明する。
次に、図2を参照して、電力低減制御部110によって実行される補機電力低減制御について詳細に説明する。ここに図2は、電力低減制御における発電電圧の制御方法を示すタイムチャートである。
次に、図3を参照して、高圧発電制御部120によって実行される高圧発電制御について詳細に説明する。ここに図3は、電力低減制御及び高圧発電制御における発電電圧の変動を示すタイムチャートである。
以下では、図4を参照して、切換え判定部130及び電圧下限値設定部140によって実行される下限値設定制御について詳細に説明する。ここに図4は、下限値設定制御の動作の流れを示すフローチャートである。
以下では、図5から図7を参照して、上述した下限電圧設定制御によって得られる有益な効果について説明する。ここに図5は、下限電圧設定時の発電電圧の変動を示すタイムチャートである。また図6は、下限電圧の設定による鉛バッテリの充放電電流の変化を示すタイムチャートであり、図7は、下限電圧の設定によるニッケル水素バッテリの充放電電流の変化を示すタイムチャートである。
110 電力低減制御部
120 高圧発電制御部
130 切換え頻度判定部
140 電圧下限値設定部
150 目標SOC設定部
160 バッテリSOC検出部
200 補機群
210 電池冷却ファン
220 エンジン冷却ファン
230 フューエルポンプ
240 オイルポンプ
250 ウォーターポンプ
300 DC/DCコンバータ
410 HVバッテリ
420 補機バッテリ
ENG エンジン
MG モータジェネレータ
Claims (4)
- 発電機と、前記発電機で発電された電力を蓄電可能な蓄電手段と、前記蓄電手段からの電力で駆動可能な一又は複数の補機とを備える車両の電源制御装置であって、
前記補機に印加される電圧の平均値が小さくなるように前記発電機の発電電圧を設定することで、前記補機の消費電力を低減する補機電力低減制御を実行する第1制御手段と、
前記補機が高負荷運転する場合に、前記補機電力低減制御を禁止して、前記発電機の発電電圧を前記補機電力低減制御中の電圧よりも高くする高電圧発電制御を実行する第2制御手段と、
前記補機電力低減制御及び前記高電圧発電制御の相互の切り替わり頻度が所定頻度以上になるか否かを判定する頻度判定手段と、
前記切り替わり頻度が前記所定頻度以上である場合には、前記切り替わり頻度が前記所定頻度未満である場合と比べて、前記補機電力低減制御における前記発電機の下限電圧を高い値に設定する下限電圧設定手段と
を備えることを特徴とする電源制御装置。 - 前記車両は、動力源としての内燃機関を備える車両であり、
前記頻度判定手段は、前記内燃機関の冷却水の水温が所定の第1温度以上である場合に、前記切り替わり頻度が前記所定頻度以上になると判定する
ことを特徴とする請求項1に記載の電源制御装置。 - 前記車両は、動力源としての電動機及び前記電動機の電力供給源である電池を備える車両であり、
前記頻度判定手段は、前記電池の温度が所定の第2温度以上である場合に、前記切り替わり頻度が前記所定頻度以上になると判定する
ことを特徴とする請求項1又は2に記載の電源制御装置。 - 前記蓄電手段の充電量の目標値である目標充電量を設定する設定手段と、
前記蓄電手段の現在の充電量を検出する検出手段と
を備え、
前記下限電圧設定手段は、(i)前記現在の充電量が前記目標充電量よりも高い場合には、前記下限電圧を前記蓄電手段の開放電圧よりも低い値に設定し、(ii)前記現在の充電量が前記目標充電量と同じ場合には、前記下限電圧を前記蓄電手段の開放電圧と同じ値に設定し、(iii)前記現在の充電量が前記目標充電量よりも低い場合には、前記下限電圧を前記蓄電手段の開放電圧よりも高い値に設定する
ことを特徴とする請求項1から3のいずれか一項に記載の電源制御装置。
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