JP2016094148A - Hybrid system, hybrid vehicle, and power supply method for the hybrid system - Google Patents
Hybrid system, hybrid vehicle, and power supply method for the hybrid system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K6/28—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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K6/42—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 the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K6/485—Motor-assist type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- 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
- 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
- B60W20/00—Control systems specially adapted for hybrid vehicles
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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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Abstract
Description
本発明は、内燃機関と電動発電機の両方を搭載し、電動発電機で発電した電力をバッテリに蓄電するハイブリッドシステム、ハイブリッド車両、及びハイブリッドシステムの電力供給方法に関する。 The present invention relates to a hybrid system, a hybrid vehicle, and a power supply method for a hybrid system in which both an internal combustion engine and a motor generator are mounted, and electric power generated by the motor generator is stored in a battery.
内燃機関と電動発電機の両方を搭載し、電動発電機で発電した電力をバッテリに蓄電するハイブリッドシステムを搭載したハイブリッド車両は、エンジンによって駆動される電動発電機で発電した電力や、車両の制動時に電動発電機で発電した回生電力をバッテリに蓄電し、このバッテリの電力を用いて車両走行したり、エンジン出力へのアシスト出力をしたりしている。 A hybrid vehicle equipped with both an internal combustion engine and a motor generator, and a hybrid system that stores the electric power generated by the motor generator in a battery, is the power generated by the motor generator driven by the engine, and braking of the vehicle. Sometimes, regenerative power generated by a motor generator is stored in a battery, and the vehicle is driven using the power of the battery or assist output to engine output.
エンジンや電動発電機の出力が比較的小さい乗用車では、ハイブリッドシステムで使用されるバッテリは、比較的高い電圧、例えば200V等に設定される。この高電圧を出力するバッテリは、感電に対する安全性の面から、バッテリの電力を外部から遮断できるようにする必要がある。 In a passenger car with a relatively small output of the engine or motor generator, the battery used in the hybrid system is set to a relatively high voltage, for example, 200V. The battery that outputs this high voltage needs to be able to cut off the power of the battery from the outside in terms of safety against electric shock.
これに関連して、車両用電源システムにおいて、ニッケル水素、リチウムイオン等の高電圧を出力する二次電池およびキャパシタを外部から遮断するために、二次電池の正極とコンバータとの間、二次電池の負極とコンバータとの間、キャパシタの正極とインバータとの間、および、キャパシタの負極とインバータとの間のそれぞれに、少なくとも1つのシステムメインリレーを備える構成が開示されている(例えば、特許文献1参照)。 In this connection, in a vehicle power supply system, a secondary battery and a capacitor that output high voltage such as nickel metal hydride and lithium ion are externally connected between the positive electrode of the secondary battery and the converter in order to shut off the capacitor. A configuration is disclosed in which at least one system main relay is provided between the negative electrode of the battery and the converter, between the positive electrode of the capacitor and the inverter, and between the negative electrode of the capacitor and the inverter (for example, a patent). Reference 1).
また、車両の電源装置の小型化および低コスト化を可能とするために、電源システムと、駆動力発生部と、制御装置とを備えた車両で、電源システムが、第1蓄電装置と、第1コンバータと、この第1コンバータと第1蓄電装置との間に設けられた第1切替装置と、第2蓄電装置と、第2コンバータと、第2蓄電装置の負極と第2コンバータとの間に設けられた第2切替装置とを含み、第2蓄電装置は、互いに直列に接続された電気二重層キャパシタとヒューズとで構成されて、制御装置が、車両の衝突が生じた場合、ヒューズにその許容電流値を超える大電流を流してヒューズを溶断させるように、第2コンバータを制御する車両の電源装置が提案されている(例えば、特許文献2参照)。 In order to enable downsizing and cost reduction of a power supply device for a vehicle, the power supply system includes a first power storage device, a first power storage device, a first power storage device, and a control device. Between one converter, a first switching device provided between the first converter and the first power storage device, a second power storage device, a second converter, a negative electrode of the second power storage device, and the second converter The second power storage device includes an electric double layer capacitor and a fuse connected in series with each other, and the control device uses a fuse when a vehicle collision occurs. A power supply device for a vehicle that controls a second converter so as to blow a fuse by flowing a large current exceeding the allowable current value has been proposed (see, for example, Patent Document 2).
このように、乗用車に搭載されるハイブリッドシステムで使用されるバッテリは、200Vを超える高い電圧仕様であり、ニッケル水素やリチウムイオン等の二次電池で構成されることが多いので、非常時に、安全のために、電源を遮断することが規則で決められており、上記のような様々な工夫がなされている。そのため、蓄電システムが複雑になるという問題がある。 As described above, the battery used in the hybrid system mounted on the passenger car has a high voltage specification exceeding 200 V, and is often composed of a secondary battery such as nickel metal hydride or lithium ion. For this reason, it is determined by a rule that the power supply is cut off, and various measures as described above are made. Therefore, there is a problem that the power storage system becomes complicated.
また、これらの高い電圧までバッテリ電圧を上げる為には多くの単電池(セル)を直列で接続する必要があり、更にはセル数増加に伴う重量増加を抑制する為に、鉛二次電池ではなく高性能であるが高価なニッケル水素やリチウムイオン等の二次電池を使用するので、コスト高になるという問題がある。 In order to raise the battery voltage to these high voltages, it is necessary to connect many single cells (cells) in series. Furthermore, in order to suppress an increase in weight due to an increase in the number of cells, However, there is a problem that the cost is high because a secondary battery such as nickel hydride or lithium ion, which is high performance but expensive, is used.
本発明は、上記のことを鑑みてなされたものであり、その目的は、非常時のバッテリ電力の遮断システムを不要にして、蓄電システムをシンプルな構成にすることができ、しかも、予期せぬ電線の切断故障に対しても冗長性を有すると共に、狭いところでも配線の自由度を確保できる、安価で安全性の高い蓄電システムを備えたハイブリッドシステム、ハイブリッド車両、及びハイブリッドシステムの電力供給方法を提供することにある。 The present invention has been made in view of the above, and an object of the present invention is to eliminate the need for an emergency battery power shut-off system, to simplify the power storage system, and to be unexpected. A hybrid system, a hybrid vehicle, and a power supply method for a hybrid system having an inexpensive and highly safe power storage system that has redundancy even in the event of a disconnection of an electric wire and can secure a degree of freedom in wiring even in a narrow space. It is to provide.
上記の目的を達成するための本発明のハイブリッドシステムは、内燃機関と電動発電機の両方を備えたハイブリッドシステムにおいて、前記電動発電機と前記電動発電機で発生した電力を蓄電するバッテリとの間にインバータを設けて、該インバータ経由で電力を移動するように構成すると共に、前記バッテリを電圧が60V以下のバッテリで形成し、更に、前記インバータと前記バッテリとの間を接続する電力線を、プラス用電力線の2本とマイナス用電力線の2本の計4本の電力線で、若しくは、プラス用電力線の3本とマイナス用電力線の3本の計6本の電力線で構成される。 In order to achieve the above object, a hybrid system of the present invention is a hybrid system including both an internal combustion engine and a motor generator, between the motor generator and a battery that stores electric power generated by the motor generator. In addition, an inverter is provided to move power through the inverter, the battery is formed of a battery having a voltage of 60 V or less, and a power line connecting the inverter and the battery is added It is composed of a total of four power lines, ie, two power lines and two minus power lines, or a total of six power lines, three plus power lines and three minus power lines.
この構成によれば、バッテリの電圧を60V以下にしたので、緊急時においてバッテリからの電力が万一人体に流れても危険性が少ないので、バッテリからの電力を遮断する機構を備える必要が無くなり、蓄電システムをシンプルな構成にすることができる。 According to this configuration, since the voltage of the battery is set to 60 V or less, there is little danger even if the power from the battery flows to the human body in an emergency, so there is no need to provide a mechanism for cutting off the power from the battery. The power storage system can be made simple.
また、バッテリの電圧を60V以下、例えば48Vにすると、従来の200Vを超えるようなシステムと同等の電動発電機の出力を維持又は増加させた場合、電圧が下がった分だけ、電流値が高くなり、電力線の抵抗が出力に与える影響、即ち、電力線の抵抗による電力ロスの問題が生じるが、電力線を4本若しくは6本にすることで、電力線の全体としての抵抗を低減できる。これにより、電流の増加による電力ロスの問題を解決でき、60V以下の電圧のバッテリをハイブリッドシステムのバッテリにより効率良く(又はより高出力で)使用できるようにすることができる。 In addition, if the battery voltage is set to 60V or less, for example 48V, when the output of the motor generator equivalent to the conventional system exceeding 200V is maintained or increased, the current value increases by the amount of the voltage decrease. Although the effect of the power line resistance on the output, that is, the problem of power loss due to the power line resistance, the resistance of the power line as a whole can be reduced by using four or six power lines. Thereby, the problem of power loss due to an increase in current can be solved, and a battery having a voltage of 60 V or less can be used more efficiently (or at a higher output) by the battery of the hybrid system.
また、電力線を4本若しくは6本にすることで、予期せぬ電力線の切断故障に対しても冗長性を有することになる。その上、1本当たりの電力線の必要容量が小さくなり、1本の電力線の太さを細くできるので、曲げることが出来る曲率半径が小さくなり、狭い所でも配線がし易くなりレイアウトの自由度を確保できるようになる。 Further, by using four or six power lines, redundancy is provided for unexpected power line disconnection failures. In addition, the required capacity of each power line is reduced, and the thickness of one power line can be reduced, so that the radius of curvature that can be bent is reduced, and wiring can be easily performed even in a narrow space, thereby increasing the flexibility of layout. It can be secured.
上記のハイブリッドシステムにおいて、前記ハイブリッドシステムの制御装置が、前記インバータと前記バッテリとの間を接続する前記電力線の一部の本数が切断された場合には、故障による機能制限(いわゆるリンプホーム機能)として、切断と診断された前記電力線への通電を停止し、残された本数に応じた出力に制限するように構成されると、電力線の一部の本数が切断されても、残りの電力線でバッテリとインバータの間の電力を支障なく移動でき、修理工場への移動を円滑に行うことができる。 In the hybrid system described above, when a part of the power line connecting the inverter and the battery is disconnected, the control device of the hybrid system limits the function due to a failure (so-called limp home function) As described above, when it is configured to stop the energization of the power line diagnosed as disconnected and limit the output according to the number of remaining power lines, even if some of the power lines are disconnected, the remaining power lines The power between the battery and the inverter can be moved without hindrance, and the transfer to the repair shop can be performed smoothly.
上記の目的を達成するための本発明のハイブリッド車両は上記のハイブリッドシステムを搭載したことを特徴とするハイブリッド車両である。このハイブリッド車両によれば、上記のハイブリッドシステムと同様の効果を奏することができる。 In order to achieve the above object, a hybrid vehicle of the present invention is a hybrid vehicle equipped with the above hybrid system. According to this hybrid vehicle, the same effects as the above hybrid system can be achieved.
上記の目的を達成するための本発明のハイブリッドシステムの電力供給方法は、内燃機関と電動発電機の両方を備えたハイブリッドシステムの電力供給方法において、前記電動発電機で発生した電力をインバータを経由して、プラス用2電力線の2本とマイナス用電力線の2本の計4本の電力線、若しくは、プラス用電力線の3本とマイナス用電力線の3本の計6本の電力線で、電圧が60V以下の前記バッテリに供給して蓄電することを特徴とする方法である。この方法によれば、上記のハイブリッドシステムと同様の効果を奏することができる。 In order to achieve the above object, a power supply method for a hybrid system according to the present invention is a power supply method for a hybrid system including both an internal combustion engine and a motor generator. The power generated by the motor generator is passed through an inverter. The voltage is 60V with 2 power lines for plus 2 and 2 power lines for minus, or 4 power lines in total, or 3 power lines for plus and 3 power lines for minus. The method is characterized in that the following battery is supplied and stored. According to this method, the same effect as the above hybrid system can be obtained.
本発明のハイブリッドシステム、ハイブリッド車両、及びハイブリッドシステムの電力供給方法によれば、60V以下の電圧のバッテリを使用するので、緊急時においてバッテリからの電力が万一人体に流れても危険性が少ないので、バッテリからの電力を遮断する機構を備える必要が無くなり、蓄電システムをシンプルな構成にすることができる。 According to the hybrid system, hybrid vehicle, and hybrid system power supply method of the present invention, a battery having a voltage of 60 V or less is used. Therefore, there is little danger even if the power from the battery flows to one person in an emergency. Therefore, it is not necessary to provide a mechanism for cutting off the electric power from the battery, and the power storage system can be simplified.
しかも、4本若しくは6本の電力線でインバータとバッテリの間を接続するように構成したので、予期せぬ電線の切断故障に対しても冗長性を有することになり、また、1本当たりの電力線の必要容量が小さくなり、1本の電力線の太さを細くできるので、曲げることが出来る曲率半径が小さくなるので、狭い所でも配線がし易くなりレイアウトの自由度を確保でき、安価で安全性の高い蓄電システムとすることができる。 In addition, since the inverter and the battery are connected by four or six power lines, redundancy is provided for unexpected electric wire disconnection failure, and the power line per line Since the required capacity of the power supply is reduced and the thickness of one power line can be reduced, the radius of curvature that can be bent is reduced, so that wiring can be facilitated even in narrow spaces, and the flexibility of layout can be secured. A high power storage system can be obtained.
以下、本発明に係る実施の形態のハイブリッドシステム、ハイブリッド車両、及びハイブリッドシステムの電力供給方法について説明する。 Hereinafter, a hybrid system, a hybrid vehicle, and a power supply method of the hybrid system according to embodiments of the present invention will be described.
この実施の形態のハイブリッドシステムは、エンジン(内燃機関)と電動発電機(M/G)を有するハイブリッドシステムである。なお、ここでは、このハイブリッドシステムはハイブリッド車両(HEV:以下車両とする)に搭載されるものとして説明するが、ハイブリッドシステム自体は、必ずしも、車両に搭載されるものに限定されない。 The hybrid system of this embodiment is a hybrid system having an engine (internal combustion engine) and a motor generator (M / G). Here, the hybrid system is described as being mounted on a hybrid vehicle (HEV: hereinafter referred to as a vehicle), but the hybrid system itself is not necessarily limited to that mounted on the vehicle.
図1に例示するように、このハイブリッドシステム2は、エンジン(ENG)11と電動発電機21の両方を備えて構成される。このハイブリッドシステム2は、エンジン11のクランク軸15に直結して設けたCVT(無段変速機構又は固定変速比動力伝達装置(滑車又はギヤ))16に電動発電機21を連結している。このCVT16は、クランク軸15側の第1プーリー16aと電動発電機21側の第2プーリー16bとの間に、無端状のベルト16cを掛け回しており、これらを介してクランク軸15と電動発電機21との間の動力伝達を行っているが、必ずしも無断変速機構を設ける必要はなく、滑車又はギヤによる固定変速比での動力伝達でも良い。
As illustrated in FIG. 1, the hybrid system 2 includes both an engine (ENG) 11 and a
この電力システム20の一部である電動発電機21は、発電機として、エンジン11の駆動力を受けて発電をしたり、又は、車両1のブレーキ力等の回生力発生による回生発電をしたりすると共に、モータとして駆動して、その駆動力をエンジン11のクランク軸15に伝達して、エンジン11の駆動力(出力:トルク)をアシストしたりする。
The
この電動発電機21で発電して得た電力は、電力線(バスバー)22を経由してインバータ(INV)23で変換して、電力線24を経由してバッテリ25に充電される。また、電動発電機21を駆動するときは、バッテリ25に充電された電力をインバータ23で変換して電動発電機21に供給する。
The electric power generated by the
このように、電動発電機21と、電動発電機21で発生した電力を蓄電するバッテリ25との間にインバータ23を設けて、このインバータ23経由で電力を移動するように構成される。
Thus, the
また、本発明に係る実施の形態のハイブリッド車両1は、図1に示すように、上記のハイブリッドシステム2を搭載して構成され、このハイブリッド車両1においては、エンジン11の動力は、動力伝達システム30の変速機31、推進軸32、差動装置33、駆動軸34を介して車輪35に伝達され、車両1が走行する。なお、エンジン11の搭載方法によっては、エンジン11から車輪35の動力の伝達経路は異なってもよい。
Further, as shown in FIG. 1, a hybrid vehicle 1 according to an embodiment of the present invention is configured by mounting the above-described hybrid system 2. In the hybrid vehicle 1, the power of the
一方、電動発電機21の動力に関しては、バッテリ25に充電された電力がインバータ23を介して電動発電機21に供給され、この電力により発生した電動発電機21の動力は、CVT16を介してクランク軸15に伝達されて、エンジン11の動力伝達経路を伝達して、車輪35に伝達される。これにより、電動発電機21の動力がエンジン11の動力と共に車輪35に伝達され、車両1が走行する。なお、回生時には、逆の経路で、車輪35の回生力、又はエンジン11の回生力が電動発電機21に伝達されて、電動発電機21で発電が可能となる。
On the other hand, regarding the power of the
また、ハイブリッドシステム用制御装置41が設けられ、エンジン11の回転数Neや負荷Q等の運転状態や電動発電機21の回転数Na等の運転状態やバッテリ25の充電量(SOC)の状態をモニターしながら、CVT16、電動発電機21、インバータ23等を制御する。このハイブリッドシステム用制御装置41は、通常は、エンジン11や車両1を制御する全体制御装置40に組み込まれて構成される。
Also, a hybrid
本発明においては、このバッテリ25を電圧が60V以下の48Vのバッテリで形成する。また、更に、インバータ23とバッテリ25との間を接続する電力線24を、プラス用電力線24aを2本とマイナス用電力線24bを2本の計4本の電力線24(24aと24bを総称して24とする)で構成する。あるいは、図示しないが、プラス用電力線24aを3本とマイナス用電力線24bを3本の計6本の電力線24で構成する。
In the present invention, the
そして、ハイブリッドシステムの制御装置であるハイブリッドシステム用制御装置41は、インバータ23とバッテリ25との間を接続する電力線24の一部の本数切断された場合には、切断と診断された電線への通電を停止し、残された本数に応じた出力に制限することで、電力線24の一部の本数が切断されても、残りの電力線24でバッテリ25とインバータ23の間の電力を支障なく移動でき、修理工場への移動を円滑に行うことができる。
The hybrid
次に、本発明に係る実施の形態のハイブリッドシステムの電力供給方法について説明する。この電力供給方法は、エンジン11と電動発電機31の両方を備えたハイブリッドシステム2の電力供給方法であり、電動発電機31で発生した電力をインバータ23を経由し、プラス用2電力線24aの2本とマイナス用電力線24bの2本の計4本の電力線24、若しくは、プラス用電力線24aの3本とマイナス用電力線24bの3本の計6本の電力線24で、電圧が60V以下のバッテリ25に供給して蓄電する方法である。
Next, a power supply method for the hybrid system according to the embodiment of the present invention will be described. This electric power supply method is an electric power supply method of the hybrid system 2 including both the
上記の構成のハイブリッドシステム2、ハイブリッド車両1、及びハイブリッドシステムの電力供給方法によれば、バッテリ25の電圧を60V以下にしたので、緊急時においてバッテリ25からの電力が万一人体に流れても危険性が少ないので、バッテリ25からの電力を遮断する機構を備える必要が無くなり、蓄電システムをシンプルな構成にすることができる。
According to the hybrid system 2, the hybrid vehicle 1, and the hybrid system power supply method configured as described above, the voltage of the
また、バッテリ25の電圧を60V以下、例えば48Vにすると電圧が下がった分だけ、電流が増すので、電流値が高くなり、電力線24の抵抗が出力に与える影響、即ち、電力線24の抵抗による電力ロスの問題が生じるが、電力線24を4本若しくは6本にすることで、電力線24の全体としての抵抗を低減できる。これにより、電流の増加による電力ロスの問題を解決でき、60V以下の電圧のバッテリをハイブリッドシステム2のバッテリ25に使用できるようにすることができる。
Further, when the voltage of the
また、電力線24を4本若しくは6本にすることで、予期せぬ電力線24の切断故障に対しても冗長性を有することになる。その上、1本当たりの電力線24の必要容量が小さくなり、1本の電力線24の太さを細くできるので、曲げることが出来る曲率半径が小さくなり、狭い所でも配線がし易くなりレイアウトの自由度を確保できるようになる。 In addition, by using four or six power lines 24, redundancy is provided for unexpected disconnection failures of the power lines 24. In addition, since the required capacity of each power line 24 is reduced and the thickness of one power line 24 can be reduced, the radius of curvature that can be bent is reduced, and wiring can be easily performed even in a narrow space. The degree can be secured.
1 車両(ハイブリッド車両:HEV)
2 ハイブリッドシステム
11 エンジン(内燃機関)
15 クランク軸
16 CVT(無段変速機構又は固定変速比動力伝達装置(滑車又はギヤ))
20 電力システム
21 電動発電機(M/G)
22 電力線(バスバー)
23 インバータ
24 電力線
24a プラス用電力線
24b マイナス用電力線
25 バッテリ
30 動力伝達システム
40 全体制御装置
41 ハイブリッドシステム用制御装置
1 Vehicle (Hybrid vehicle: HEV)
2
15
20
22 Power line (bus bar)
23 Inverter 24
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