JP6900883B2 - 車両用制御装置 - Google Patents
車両用制御装置 Download PDFInfo
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- JP6900883B2 JP6900883B2 JP2017224816A JP2017224816A JP6900883B2 JP 6900883 B2 JP6900883 B2 JP 6900883B2 JP 2017224816 A JP2017224816 A JP 2017224816A JP 2017224816 A JP2017224816 A JP 2017224816A JP 6900883 B2 JP6900883 B2 JP 6900883B2
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- power
- power generation
- increase
- automatic stop
- generation device
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- 238000000034 method Methods 0.000 claims description 110
- 238000010248 power generation Methods 0.000 claims description 56
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 51
- 238000002485 combustion reaction Methods 0.000 claims description 32
- 238000009789 rate limiting process Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 239000007858 starting material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel hydrogen Chemical class 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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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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- B60K6/00—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
- B60K6/22—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 characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—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 characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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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
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- B60K6/22—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 characterised by apparatus, components or means specially adapted for HEVs
- B60K6/28—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 characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
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- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18018—Start-stop drive, e.g. in a traffic jam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0825—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
- H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
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- B60W2510/244—Charge state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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- B60Y2200/92—Hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N2011/0881—Components of the circuit not provided for by previous groups
- F02N2011/0888—DC/DC converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N2011/0881—Components of the circuit not provided for by previous groups
- F02N2011/0896—Inverters for electric machines, e.g. starter-generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
- F02N2200/061—Battery state of charge [SOC]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
- F02N2200/0801—Vehicle speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
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- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Charge By Means Of Generators (AREA)
Description
1.車両用制御装置は、内燃機関と、前記内燃機関のクランク軸の回転動力を電力に変換する発電装置と、前記発電装置の出力電圧が印加される補機と、蓄電装置と、前記発電装置および前記補機と前記蓄電装置との間に接続されるDCDCコンバータとを備える車両に適用され、前記内燃機関の自動停止要求に応じて前記内燃機関の燃焼制御を停止する自動停止処理と、前記自動停止処理がなされる場合、前記DCDCコンバータを操作して前記蓄電装置側に供給される電力量を増加させることによって、前記発電装置の発電量を増加させる増加処理と、を実行する。
上記構成では、増加処理に伴って発電装置の出力電圧を上昇させないため、補機に印加される電圧が増加処理に起因して上昇することがない。
以下、車両用制御装置にかかる第1の実施形態について図面を参照しつつ説明する。
図1に示す内燃機関10は、クランク軸12の回転速度がアイドル回転速度制御による目標速度よりも低い回転速度領域に共振周波数帯が含まれるものである。ただし、共振周波数帯は、内燃機関10単独で規定されるものであるとは限らず、内燃機関10を含んだ駆動系の構造や配置によって定まるものであってよい。クランク軸12には、発電装置20が接続されている。発電装置20は、クランク軸12の回転動力によって回転するロータに設けられた界磁巻線22と、ステータ側の3相の電機子巻線24と、電機子巻線24の各相の端子に接続された全波整流回路26と、界磁巻線22を流れる電流を調整する調整回路28とを備えている。ここで、全波整流回路26は、3相インバータと同様の構成を有している。すなわち、上側アームのスイッチング素子SWおよび下側アームのスイッチング素子SWと、それらスイッチング素子SWに逆並列接続されたダイオードDとを備えている。上記ダイオードDは、単独で全波整流回路を構成しうる。
ここで、本実施形態の作用および効果について説明する。
(1)自動停止処理がなされていない場合、第2バッテリ42の充電率SOCが規定値Sis以下となるようにDCDCコンバータ40を操作した。これにより、自動停止処理がなされることで第1バッテリ34側から第2バッテリ42側にDCDCコンバータ40が出力する電力が増加しても、第2バッテリ42の充電率SOCが上限値SthHを超えることを抑制できる。
以下、第2の実施形態について、第1の実施形態との相違点を中心に図面を参照しつつ説明する。
CPU52は、車速SPDが規定速度SPDthよりも大きい場合、第2バッテリ42の充電率SOCを、上限値SthH以下に制限する。このため、規定値Sisに制限する場合と比較すると、第2バッテリ42の充電量を増加させることが可能となるため、たとえば回生制御時のように燃料消費量を増加させることなく発電装置20の発電量を大きくできるときに、発電量を増加させることができる。このため、エネルギ消費率を向上させることができる。しかも、車速SPDが規定速度SPDth以下となることにより、第2バッテリ42の充電率SOCを規定値Sis以下に制限することにより、自動停止処理が実行され第1バッテリ34側から第2バッテリ42側へとDCDCコンバータ40が出力する電力が増加した場合に第2バッテリ42の充電率SOCが上限値SthHを超えることを抑制できる。
以下、第3の実施形態について、第1の実施形態との相違点を中心に図面を参照しつつ説明する。
CPU52は、自動停止要求が生じた場合に第2バッテリ42の充電率SOCが規定値Sisよりも大きい場合、第2バッテリ42の放電処理を実行する。そして充電率SOCが規定値Sis以下となる場合に自動停止処理を実行し、第1バッテリ34側から第2バッテリ42側にDCDCコンバータ40が出力する電力量を増加させる。これにより、第2バッテリ42側にDCDCコンバータ40が出力する電力量を増加させる処理によって、第2バッテリ42の充電率SOCが上限値SthHを超えることを抑制できる。
上記実施形態における事項と、上記「課題を解決するための手段」の欄に記載した事項との対応関係は、次の通りである。以下では、「課題を解決するための手段」の欄に記載した解決手段の番号毎に、対応関係を示している。[1]発電装置の出力電圧が印加される補機は、補機32に対応し、蓄電装置は、第2バッテリ42に対応する。自動停止処理は、S18の処理に対応し、増加処理は、S22の処理に対応する。[2]充電率制限処理は、図2のS12の処理や、図4のS34の処理に続くS12aの処理に対応する。[3]図5の処理に対応する。[4]S30の処理に対応する。[5]図3の発電装置20の出力電圧Voutが電圧VLで固定されていることに対応する。
本実施形態は、以下のように変更して実施することができる。本実施形態および以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
図4では、車速SPDが規定速度SPDth以下となる場合、充電率SOCの最大値を規定値Sisに制限したが、これに限らない。たとえば、車速SPDが規定速度SPDthよりも大きい所定の速度以下となる場合、充電率SOCの最大値を規定値Sisに制限してもよい。
第2バッテリ42としては、リチウムイオン2次電池に限らず、たとえばニッケル水素2次電池であってもよい。第2バッテリ42を備えることなく、代わりにキャパシタを備えてもよい。
上記実施形態では、所定速度NEthLを、スイッチング素子SWの温度が過度に上昇し劣化を招くことがない上限値に設定したが、これに限らない。たとえば発電装置20による発電ができない回転速度NEの上限値に設定してもよい。
上記実施形態では、上側アームのスイッチング素子SWを全てオン状態とし、下側アームのスイッチング素子SWを全てオフ状態とすることにより、電機子巻線24の端子同士を短絡接続したが、短絡接続する処理としてはこれに限らない。たとえば、上側アームのスイッチング素子SWを全てオフ状態とし、下側アームのスイッチング素子SWを全てオン状態としてもよい。なお、下記「発電装置について」の欄に記載したように、発電装置20がスイッチング素子SWを備えない構成の場合であっても、短絡接続する処理を実行することは可能である。
発電装置としては、全波整流回路26として3相インバータと同等の構成を備えるものに限らず、たとえば、スイッチング素子SWを備えない構成であってもよい。ただし、この場合であっても、S20の処理に相当する処理を実行する上では、電機子巻線24の端子同士をバッテリ等を介すことなく接続する(短絡接続する)ことが可能な構成とすることが望ましい。
上記実施形態では、放電処理として、DCDCコンバータ40によって、第2バッテリ42を放電させる処理を例示したがこれに限らない。たとえば、上記補機46内に電動機が含まれる場合、電動機に無効電流を流すことにより、電動機のトルクを増加させることなく消費電力を増加させてもよい。
上記実施形態では、共振周波数帯が、アイドル回転速度制御時の回転周波数よりも低い領域にあることを想定したが、これは必須ではない。換言すれば、自動停止処理時に発電装置20がクランク軸12に加える負荷トルクを増大させることの狙いとしては、共振周波数帯を早期に通過することに限らない。
たとえば上記第1の実施形態や第2の実施形態において、DCDCコンバータとして、第1バッテリ34側から第2バッテリ42側への電力の出力が可能であって、第2バッテリ42側から第1バッテリ34側への電力の出力が可能ではないものを採用してもよい。
上記実施形態では、スイッチング素子SWを全てオフ状態として発電制御を実行したが、これに限らない。たとえば、ダイオードDのうち電流が流れるものが逆並列接続されたスイッチング素子SWをオン状態としてもよい。
車両用制御装置としては、CPU52とROM54とを備えて、ソフトウェア処理を実行するものに限らない。たとえば、上記実施形態においてソフトウェア処理されたものの少なくとも一部を、ハードウェア処理する専用のハードウェア回路(たとえばASIC等)を備えてもよい。すなわち、車両用制御装置は、以下の(a)〜(c)のいずれかの構成であればよい。(a)上記処理の全てを、プログラムに従って実行する処理装置と、プログラムを記憶するROM等のプログラム格納装置とを備える。(b)上記処理の一部をプログラムに従って実行する処理装置およびプログラム格納装置と、残りの処理を実行する専用のハードウェア回路とを備える。(c)上記処理の全てを実行する専用のハードウェア回路を備える。ここで、処理装置およびプログラム格納装置を備えたソフトウェア処理回路や、専用のハードウェア回路は複数であってもよい。すなわち、上記処理は、1または複数のソフトウェア処理回路および1または複数の専用のハードウェア回路の少なくとも一方を備えた処理回路によって実行されればよい。
Claims (3)
- 内燃機関と、前記内燃機関のクランク軸の回転動力を電力に変換する発電装置と、前記発電装置の出力電圧が印加される補機と、蓄電装置と、前記発電装置および前記補機と前記蓄電装置との間に接続されるDCDCコンバータとを備える車両に適用され、
前記内燃機関の自動停止要求に応じて前記内燃機関の燃焼制御を停止する自動停止処理と、
前記自動停止処理がなされる場合、前記DCDCコンバータを操作して前記蓄電装置側に供給される電力量を増加させることによって、前記発電装置の発電量を増加させる増加処理と、を実行し、
前記蓄電装置は、2次電池であり、
前記増加処理がなされていないことを条件に、前記2次電池の充電率が規定値以下となるように前記DCDCコンバータを操作する充電率制限処理を実行し、
前記増加処理は、前記充電率が前記規定値を上回ることを許容する処理を含み、
前記増加処理の開始前に対して開始に伴って前記発電装置の出力電圧を上昇させない車両用制御装置。 - 内燃機関と、前記内燃機関のクランク軸の回転動力を電力に変換する発電装置と、前記発電装置の出力電圧が印加される補機と、蓄電装置と、前記発電装置および前記補機と前記蓄電装置との間に接続されるDCDCコンバータとを備える車両に適用され、
前記内燃機関の自動停止要求に応じて前記内燃機関の燃焼制御を停止する自動停止処理と、
前記自動停止処理がなされる場合、前記DCDCコンバータを操作して前記蓄電装置側に供給される電力量を増加させることによって、前記発電装置の発電量を増加させる増加処理と、を実行し、
前記蓄電装置は、2次電池であり、
前記2次電池の充電率が規定値以下であることを条件に、前記自動停止処理を実行し、
前記内燃機関の自動停止要求が生じたときに前記充電率が前記規定値よりも大きい場合、前記蓄電装置を放電させる放電処理を実行し、
前記増加処理の開始前に対して開始に伴って前記発電装置の出力電圧を上昇させない車両用制御装置。 - 前記自動停止処理を、車速が規定速度以下であることを条件に実行し、
前記車速が所定速度以下である場合、前記増加処理がなされていないことを条件に、前記2次電池の充電率が規定値以下となるように前記DCDCコンバータを操作する充電率制限処理を実行し、
前記所定速度は、前記規定速度以上に設定されている請求項1または2記載の車両用制御装置。
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