JP2017087915A - 車両の制御装置 - Google Patents
車両の制御装置 Download PDFInfo
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- JP2017087915A JP2017087915A JP2015218983A JP2015218983A JP2017087915A JP 2017087915 A JP2017087915 A JP 2017087915A JP 2015218983 A JP2015218983 A JP 2015218983A JP 2015218983 A JP2015218983 A JP 2015218983A JP 2017087915 A JP2017087915 A JP 2017087915A
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Abstract
【解決手段】車両の走行予定経路における道路勾配及び車速の予測結果に基づいて走行予定経路における高圧バッテリ20の残容量を表すSOCを予測する。その予測SOCに基づいて高圧バッテリ20が飽和状態になると判定した場合に、予測SOCに基づいて高圧バッテリ20が飽和状態にならないように予め高圧バッテリ20の放電量を増加させる放電増加制御を実行する。この放電増加制御の開始後に、予測SOCの挙動が実際のSOCの挙動に対してずれていると判定された場合、又は、予測SOCの挙動が実際のSOCの挙動に対してずれると予想される車両制御又は環境変化が発生したと判定された場合に、走行予定経路におけるSOCの予測を再度実施して放電増加制御を修正する。
【選択図】図1
Description
しかし、長い下り坂で回生発電し続けると、バッテリの残容量を表すSOCが上限値に到達してバッテリが回生電力を充電できない飽和状態になってしまう可能性ある。
まず、図1に基づいてハイブリッド車の制御システムの概略構成を説明する。
温水暖房装置23は、エンジン11の冷却水通路(いわゆるウォータジャケット)に、暖房用の温水回路25が接続されている。この温水回路25に、暖房用のヒータコア26と電動ウォータポンプ27が設けられている。この電動ウォータポンプ27によりエンジン11とヒータコア24との間で冷却水(温水)を循環させるようになっている。ヒータコア24の近傍には、温風を発生させるブロアファン28が配置されている。
SOC=残容量/満充電容量×100
以下、本実施例1でハイブリッドECU39が実行する図4乃至図6の各ルーチンの処理内容を説明する。
図4に示すメイン制御ルーチンは、ハイブリッドECU39の電源オン期間中に所定周期で繰り返し実行される。本ルーチンが起動されると、まず、ステップ101で、走行予定経路の予測が困難か否かを判定する。この場合、車両の目的地情報が得られず且つ進行方向の経路分岐数が所定値(例えば1又は2)以上の場合に、走行予定経路の予測が困難と判定する。
この後、ステップ104に進み、実際のSOCが所定値(例えば許容下限値又はそれよりも少し高い値)以下か否かを判定する。
図5に示すSOC予測及び放電量算出ルーチンは、前記図4のメイン制御ルーチンのステップ110で実行されるサブルーチンであり、特許請求の範囲でいうSOC予測部、放電制御部、修正部としての役割を果たす。
このステップ206で、バッテリ20が飽和状態にならない(つまり予測SOCが上限値に到達しない)と判定された場合には、ステップ207に進み、燃費最大化充放電量設定(図4のステップ113と同じ処理)を行う。
Claims (10)
- 車両の動力源となるエンジン(11)及びモータジェネレータ(12,13)と、該モータジェネレータと電力を授受するバッテリ(20)とを備え、前記車両を制動する際に前記モータジェネレータで回生発電した電力(以下「回生電力」という)を前記バッテリに充電する車両の制御装置において、
前記車両の走行予定経路における道路勾配及び車速の予測結果に基づいて前記走行予定経路における前記バッテリの残容量を表すSOCを予測するSOC予測部(39)と、
前記SOC予測部で予測したSOC(以下「予測SOC」という)に基づいて前記バッテリが前記回生電力を充電できない飽和状態になると判定した場合に、前記予測SOCに基づいて前記バッテリが前記飽和状態にならないように予め前記バッテリの放電量を増加させる放電増加制御を実行する放電制御部(39)と、
前記放電増加制御の開始後に、前記予測SOCの挙動が実際のSOCの挙動に対してずれている(以下「予測SOCの挙動がずれている」という)か又は前記予測SOCの挙動が前記実際のSOCの挙動に対してずれると予想される車両制御又は環境変化(以下「SOCずれ要因」という)が発生したか否かを判定する判定部(39)と、
前記判定部で前記予測SOCの挙動がずれていると判定された場合又は前記SOCずれ要因が発生したと判定された場合に、前記走行予定経路におけるSOCの予測を再度実施して前記放電増加制御を修正する修正部(39)と
を備えている車両の制御装置。 - 前記判定部は、前記放電増加制御を実行しない場合の現時点の予測SOCに対して該予測SOCの予測時点から現時点までの前記放電増加制御による放電量増加分を差し引いたSOCと、現地点の実際のSOCとの差が所定値以上の場合に、前記予測SOCの挙動がずれていると判定する請求項1に記載の車両の制御装置。
- 前記判定部は、前記SOCずれ要因として、走行経路の変更、補機の作動状態の変化、風速の変化、風向の変化、路面状態の変化のうちの少なくとも一つが発生したか否かを判定する請求項1又は2に記載の車両の制御装置。
- 前記実際のSOCが所定値以下になった場合に、前記バッテリの放電を禁止して前記エンジンの動力で前記モータジェネレータを回転駆動して前記モータジェネレータで発電するSOC低下抑制部(39)を備えている請求項1乃至3のいずれかに記載の車両の制御装置。
- 前記SOC低下抑制部は、前記モータジェネレータの発電電力を空調用の電動コンプレッサ(29)を含む補機の消費電力の総和とする請求項4に記載の車両の制御装置。
- 前記走行予定経路の予測が困難な場合に、前記放電増加制御を禁止する禁止部(39)を備えている請求項1乃至5のいずれかに記載の車両の制御装置。
- 前記禁止部は、前記車両の目的地情報が得られず且つ進行方向の経路分岐数が所定値以上の場合に、前記走行予定経路の予測が困難と判定する請求項6に記載の車両の制御装置。
- 前記バッテリの劣化状態が所定以上の場合に、前記放電増加制御を禁止する禁止部(39)を備えている請求項1乃至7のいずれかに記載の車両の制御装置。
- 前記放電制御部は、前記放電増加制御の際に、前記エンジンの動力と前記モータジェネレータの動力の両方で前記車両を走行させるアシスト走行により前記バッテリの放電を行うアシスト放電と、前記モータジェネレータの動力のみで前記車両を走行させるEV走行により前記バッテリの放電を行うにEV放電のうちの少なくとも一方で、前記バッテリの放電量を増加させる請求項1乃至8のいずれかに記載の車両の制御装置。
- 前記放電制御部は、前記車両の走行出力が大きいほど前記アシスト放電による前記バッテリの放電電力を大きくし、前記車両の走行出力が小さいほど前記アシスト放電による前記バッテリの放電電力を小さくする請求項9に記載の車両の制御装置。
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US10946764B2 (en) | 2021-03-16 |
DE112016005098B4 (de) | 2024-06-06 |
WO2017077808A1 (ja) | 2017-05-11 |
US20180273021A1 (en) | 2018-09-27 |
JP6406215B2 (ja) | 2018-10-17 |
CN108349486A (zh) | 2018-07-31 |
CN108349486B (zh) | 2021-11-30 |
DE112016005098T5 (de) | 2018-08-02 |
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