WO2012053084A1 - 電動車両の電源システムおよびその制御方法ならびに電動車両 - Google Patents
電動車両の電源システムおよびその制御方法ならびに電動車両 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
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- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/14—Supplying electric power to auxiliary equipment of vehicles to electric lighting circuits
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
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- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
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- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
- B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
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- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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- 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
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Definitions
- the present invention relates to a power supply system for an electric vehicle, a control method therefor, and an electric vehicle. More specifically, the present invention relates to a main power storage device (high voltage) for power supply for traveling motors and a sub power storage device for auxiliary power supply including a control device. The present invention relates to charging control of an auxiliary battery in an electric vehicle equipped with (low pressure) and capable of being charged by an external power source.
- Patent Document 1 Japanese Patent Laying-Open No. 2009-27774 describes a configuration of an electric vehicle with improved charging efficiency during external charging.
- the electric vehicle described in Patent Document 1 is based on a main battery that can be charged by an external power source, a DC / DC converter that steps down the voltage of the main battery, and an output voltage of the DC / DC converter. And an auxiliary battery to be charged.
- the DC / DC converter is continuously operated during vehicle operation, while the DC / DC converter is intermittently operated during external charging. Thereby, the power consumption in a DC / DC converter can be suppressed and the charging efficiency of external charging can be improved.
- an auxiliary battery is charged with electric power from an external power source in parallel with the main battery during external charging.
- the auxiliary battery is charged by the DC / DC converter stepping down the output power of the main battery.
- This DC / DC converter is connected in the middle of an energization path from the main power storage device to the traveling motor.
- the electric power exchanged between the main power storage device and the electric motor for traveling while the vehicle is traveling is larger than the electric power supplied from an external power source during external charging.
- the DC / DC converter has a relatively large power capacity, and its power consumption is larger than that of the power converter used for external charging.
- a relatively large-capacity main relay that is turned on when the system is started is generally arranged in the energization path between the main power storage device and the traveling motor.
- the excitation current for turning on the main relay is also generally supplied by the power of the auxiliary battery. For this reason, in order to start charging of the auxiliary battery in a state where the external power source is not connected, the power consumption of the auxiliary battery for operating the DC / DC converter and / or the main relay is increased.
- the present invention has been made to solve such a problem, and the object of the present invention is to provide an externally chargeable electric vehicle, even when the output of the sub power storage device that is the power source of the control system is reduced. It is an object of the present invention to provide a configuration of a power supply system that can reliably form a charging path for a sub power storage device using power from a main power storage device.
- a power system for an electric vehicle includes a main power storage device, a charging device, a sub power storage device, a first power converter, a second power converter, and a control device.
- the main power storage device is configured to store electric power that is input to and output from an electric motor that generates vehicle driving power.
- the charging device includes a first power conversion that converts power from an external power source into charging power for the main power storage device, and a second power that is at least a part of power conversion in a direction opposite to the first power conversion. The conversion is configured to be selectively executed.
- the output voltage of the sub power storage device is lower than the output voltage of the main power storage device.
- the power consumption of the first power converter is greater than the sum of the power consumption of the second power converter and the power consumption of the charging device second power conversion.
- control device selects the second charge and charges the sub power storage device when the state value indicating the output state of the sub power storage device is lower than a predetermined determination value.
- the selecting step selects the second charge and charges the sub power storage device when the state value indicating the output state of the sub power storage device is lower than a predetermined determination value.
- the charging path of the sub power storage device is reliably formed by the power from the main power storage device can do.
- FIG. 1 is a block diagram showing a configuration of an electric vehicle equipped with a power supply system according to an embodiment of the present invention.
- electric vehicle 100 includes a power storage device 110 corresponding to a “main power storage device”, a system main relay (hereinafter also referred to as SMR (System Main Relay)) 115, and a PCU (Power Control Unit). 120, a motor generator 130 that is an electric motor for traveling, a power transmission gear 140, drive wheels 150, and a control device 300.
- SMR System Main Relay
- PCU Power Control Unit
- the power storage device 110 is a power storage element configured to be chargeable / dischargeable, and typically includes a secondary battery such as a lithium ion battery or a nickel metal hydride battery.
- a secondary battery such as a lithium ion battery or a nickel metal hydride battery.
- the output voltage of power storage device 110 is about 200V.
- power storage device 110 may be configured by a power storage element such as an electric double layer capacitor or a combination of a power storage element and a secondary battery.
- the control device 300 includes a CPU (Central Processing Unit), a storage device, and an electronic control unit including an input / output buffer (not shown).
- Control device 300 (hereinafter also referred to as ECU 300) controls each device mounted on electric vehicle 100. Note that these controls are not limited to processing by software, and can be processed by dedicated hardware (electronic circuit).
- the power storage device 110 is connected to the power line PL1 and the ground line NL1 via the SMR 115. Power line PL1 and ground line NL1 are connected to PCU 120 for driving motor generator 130. Power storage device 110 supplies electric power for generating driving force of electric powered vehicle 100 to PCU 120. In addition, power storage device 110 stores electric power generated by motor generator 130.
- the one end of the relay included in SMR 115 is connected to the positive terminal and the negative terminal of power storage device 110, respectively.
- the other end of the relay included in SMR 115 is connected to power line PL1 and ground line NL1 connected to PCU 120, respectively.
- SMR 115 switches between power supply and cutoff between power storage device 110 and PCU 120 based on control signal SE ⁇ b> 1 from ECU 300.
- FIG. 2 is a diagram illustrating an example of the internal configuration of the PCU 120.
- PCU 120 includes a converter 121, an inverter 122, and smoothing capacitors C1 and C2.
- Converter 121 performs bidirectional power conversion between power line PL1 and ground line NL1, power line HPL and ground line NL1, based on control signal PWC from ECU 300.
- a circuit configuration of a power conversion circuit for example, a bidirectional chopper circuit
- a DC voltage conversion function can be arbitrarily applied.
- the inverter 122 is connected to the power line HPL and the ground line NL1. Inverter 122 converts DC power supplied from converter 121 into AC power based on control signal PWI from ECU 300 and drives motor generator 130. As the inverter 122, a general three-phase inverter circuit configuration can be applied.
- a configuration in which one motor generator and inverter pair is provided is shown as an example, but a configuration in which a plurality of motor generator and inverter pairs are provided may be employed.
- Smoothing capacitor C1 is provided between power line PL1 and ground line NL1, and reduces voltage fluctuation between power line PL1 and ground line NL1.
- Capacitor C2 is provided between power line HPL and ground line NL1, and reduces voltage fluctuation between power line HPL and ground line NL1.
- the output torque of the motor generator 130 is transmitted to the drive wheels 150 via a power transmission gear 140 configured by a reduction gear and a power split mechanism (not shown).
- the electric vehicle 100 travels by the torque transmitted to the drive wheels 150.
- Motor generator 130 can generate electric power by the rotational force of drive wheel 150 during regenerative braking of electric vehicle 100. Then, the generated power is converted into charging power for power storage device 110 by PCU 120.
- the power supply system further includes a charging device 200, an AC / DC converter 210, a charging relay 240, and a connection unit 250 as a configuration (external charging system) for externally charging power storage device 110 with electric power from external power supply 260.
- a charging device 200 for externally charging power storage device 110 with electric power from external power supply 260.
- external power supply 260 is a commercial AC power supply.
- CHR 240 is connected between the positive terminal of power storage device 110 and power line PL2, and between the negative terminal of power storage device 110 and ground line NL2.
- CHR 240 forms or blocks an energization path between power storage device 110 and charging device 200 based on control signal SE2 from ECU 300.
- DC / DC converter 204 converts the DC power on power line PL4 into the charging power of power storage device 110 through a DC voltage conversion operation, and outputs the power between power line PL2 and ground line NL2. That is, the DC / DC converter 204 corresponds to a “fourth power converter”, and the power line PL4 corresponds to a “second power line”.
- FIG. 3 shows a configuration example of the charging device 200.
- AC / DC converter 202 includes reactors L ⁇ b> 1 and L ⁇ b> 2, a smoothing capacitor C ⁇ b> 3, and a bridge circuit 112.
- the charging device 200 is configured to perform at least a part of power conversion in a direction opposite to the power conversion for external charging described above.
- each of the AC / DC converter 202 and the DC / DC converter 204 is configured to be capable of power conversion in both directions.
- DC / DC converter 204 has a function of converting DC voltage Vdc transmitted from power storage device 110 to power line PL2 and ground line NL2 and outputting the voltage between power line PL4 and ground line NL4. Also have. This function can be realized by on / off control of the power semiconductor switching elements constituting the bridge circuits 114 and 116.
- DC / DC converter 170 is connected to power line PL1 and ground line NL1, and reduces the DC voltage supplied from power storage device 110 based on control signal PWD from ECU 300.
- DC / DC converter 170 supplies power to the low-voltage system of the entire vehicle such as auxiliary battery 180, auxiliary load 190, and ECU 300 via power line PL3. Further, the operating power of DC / DC converter 170 (for example, the power consumption of the control power supply) is also supplied from power line PL3 by the power of auxiliary battery 180.
- DC / DC converter 170 is connected to the path between power storage device 110 and motor generator 130, and is configured to convert the power from power storage device 110 into the charging power of auxiliary battery 180.
- the DC / DC converter 170 is typically a switching regulator including a power semiconductor switching element (not shown), and any known circuit configuration can be applied.
- AC / DC converter 210 is connected between power lines ACL1, ACL2 and power line PL3. It is preferable to use AC / DC converter 210 provided for the purpose of charging auxiliary battery 180 during external charging.
- the AC / DC converter 210 is controlled by a control signal PWF from the ECU 300 and converts an AC voltage supplied from the external power supply 260 into a DC voltage.
- PWF control signal
- the SMR 115 is kept off and the DC / DC converter 170 is not started, and the external battery 180 is charged and discharged from the AC / DC converter 210 during external charging.
- the auxiliary machine load 190 can be driven.
- the electric power exchanged between power storage device 110 and motor generator 130 during vehicle operation is larger than the electric power supplied from external power supply 260 to power storage device 110 during external charging. Therefore, the current capacity of SMR 115 that operates during vehicle operation is larger than the current capacity of CHR 240 that operates during external charging. For this reason, the power consumption for turning on the SMR 115 (mainly the excitation current of the relay) is larger than the power consumption for turning on the CHR 240.
- ECU 300 outputs control signals for controlling SMR 115, PCU 120, DC / DC converter 170, charging device 200, AC / DC converter 210, CHR 240, and the like.
- the power of the auxiliary battery 180 is usually converted by converting the electric power from the power storage device 110 by the DC / DC converter 170. Charging power is generated.
- the auxiliary battery 180 is charged, it is necessary to turn on the SMR 115 and supply the operating power of the DC / DC converter 170 from the auxiliary battery 180. For this reason, when the output of the auxiliary battery 180 is lowered, there is a possibility that an excessive load is applied to the auxiliary battery 180. In particular, when the output of the auxiliary battery 180 is extremely reduced, there is a possibility that the power for starting up the SMR 115 and the DC / DC converter 170 cannot be secured and charging of the auxiliary battery 180 cannot be started.
- the output state of auxiliary battery 180 is reflected in the charge control.
- FIG. 4 shows a flowchart for explaining auxiliary battery charging control in the power supply system of the electric vehicle according to the present embodiment.
- the flowchart shown in FIG. 4 is executed by the ECU 300 at predetermined intervals including when the operation is stopped in a state where the external power supply 260 is not connected to the electric vehicle 100 (during non-external charging). That is, in a state in which auxiliary battery 180 can be charged by external power supply 260, auxiliary battery 180 is charged by AC / DC converter 210 using the power from external power supply 260 when there is a request for charging the auxiliary battery. It should be a priority.
- ECU 300 determines in step S100 whether there is a request for charging auxiliary battery 180 or not. The determination at S100 is executed based on, for example, the SOC of auxiliary battery 180 or voltage VB2. Once charging of auxiliary battery 180 is started, S100 is maintained at YES until charging is completed.
- ECU 300 advances the process to step S110 when there is a charge request for auxiliary battery 180 (when YES is determined in S100). In step S110, it is determined whether auxiliary battery 180 is being charged. ECU 300 advances the process to step S120 when NO is determined in S110 at the start of charging.
- ECU300 detects the output state value which shows the output state of an auxiliary battery in step S120.
- This state value is, for example, the output power upper limit value Wout2 of the auxiliary battery 180.
- output power upper limit value Wout2 can be calculated based on current IB2, charge amount (SOC), temperature TB2, voltage VB2, and the like of auxiliary battery 180.
- the voltage value VB2 of the auxiliary battery 180 or the temperature TB2 itself, or a parameter value calculated by a combination of both may be detected as the output state value of the auxiliary battery 180. .
- auxiliary battery 180 when the output of auxiliary battery 180 is reduced, without using SMR 115 and DC / DC converter 170 that consume large power, The auxiliary battery 180 can be charged using the CHR 240, the charging device 200, and the AC / DC converter 210 that consume relatively little power. Therefore, even when the output of auxiliary battery 180 is reduced and the output voltage of auxiliary battery 180 cannot be sufficiently secured, the charging path of auxiliary battery 180 by the electric power from power storage device 110 can be reliably formed. .
- DC / DC converter 210 # is configured to convert DC power on power line PL4 and ground line NL4 into charging power for auxiliary battery 180 based on control signal PWF from ECU 300. Since DC / DC converter 210 # is provided in the path for external charging, the rated power and operation are compared with DC / DC converter 170 provided in the path between power storage device 110 and the running motor (motor generator 130). Power consumption is small.
- AC / DC converter 202 only needs to have a unidirectional power conversion function that converts AC power from external power supply 260 into DC power and outputs it to power line PL4. Therefore, for the AC / DC converter 202, in the circuit configuration shown in FIG. 2, the bridge circuit 116 can be configured as a simple diode bridge without using a power semiconductor switching element.
- ECU 300 executes step S150 # instead of step S150 (FIG. 4) at the time of YES determination in step S130. . Since the processing in other steps is the same as in FIG. 4, detailed description will not be repeated.
- FIG. 3 illustrates an insulating charging device using the transformer 117, but a non-insulating charging device can also be used.
Abstract
Description
図2を参照して、PCU120は、コンバータ121と、インバータ122と、平滑コンデンサC1,C2とを含む。
外部充電時には、CHR240をオンすることによって、外部電源260からの電力によって主蓄電装置110および補機バッテリ180を充電するための通電経路が形成される。一方、外部充電時以外(非外部充電時)においては、CHR240をオフすることによって、外部充電系の機器群に対して、蓄電装置110の出力電圧が印加されることを回避できる。これにより、外部充電系機器群の寿命を延ばすことができる。同様に、外部充電時には、SMR115をオフすることによって、外部充電のための電力が、SMR115よりも下流側の車両走行系の機器群に印加されないようにすることができる。これにより、車両走行系の機器群の寿命が外部充電の影響によって低下することを防止できる。
図3を参照して、AC/DC変換器202は、リアクトルL1,L2と、平滑コンデンサC3と、ブリッジ回路112とを含む。
図5は、本発明の実施の形態の変形例による電動車両およびその電源システムの構成を示すブロック図である。
DC/DCコンバータ210♯は、ECU300からの制御信号PWFに基づいて、電力線PL4および接地線NL4上の直流電力を、補機バッテリ180の充電電力に変換するように構成される。DC/DCコンバータ210♯は、外部充電の経路に設けられるため、蓄電装置110および走行用電動機(モータジェネレータ130)の間の経路に設けられるDC/DCコンバータ170と比較して、定格電力および作動時の消費電力は小さい。
Claims (14)
- 車両駆動パワーを発生する電動機(130)に対して入出力される電力を蓄積するための主蓄電装置(110)と、
外部電源(260)からの電力を前記主蓄電装置の充電電力に変換する第1の電力変換と、前記第1の電力変換とは逆方向の電力変換のうちの少なくとも一部である第2の電力変換とを選択的に実行するための充電装置(200)と、
前記主蓄電装置よりも出力電圧が低い副蓄電装置(180)と、
前記主蓄電装置および前記電動機の間の経路に接続されて、前記主蓄電装置からの電力を前記副蓄電装置の充電電力に変換するための第1の電力変換器(170)と、
前記外部電源と接続するための接続部(250)および前記主蓄電装置の間の経路に接続されて、前記充電装置による前記第2の電力変換によって得られた電力を前記副蓄電装置の充電電力に変換するための、前記第1の電力変換器よりも定格出力が小さい第2の電力変換器(210,210♯)と、
前記副蓄電装置を充電する場合に、前記副蓄電装置の出力状態に応じて、前記充電装置および前記第2の電力変換器を停止する一方で前記第1の電力変換器によって前記副蓄電装置を充電する第1の充電と、前記第1の電力変換器を停止する一方で前記充電装置および前記第2の電力変換器によって前記副蓄電装置を充電する第2の充電とを選択的に実行するための制御装置(300)とを備える、電動車両の電源システム。 - 前記制御装置(300)は、前記副蓄電装置の出力状態を示す状態値が、所定の判定値よりも低いときに前記第2の充電を選択して前記副蓄電装置を充電する、請求の範囲第1項記載の電動車両の電源システム。
- 前記状態値は、前記副蓄電装置の出力可能電力上限値(Wout2)、出力電圧(VB2)または、温度(TB2)である、請求の範囲第2項記載の電動車両の電源システム。
- 前記外部電源(260)は交流電力を供給し、
前記充電装置(200)は、
外部充電時に前記外部電源と接続される第1の電力線(ACL1,ACL2)と、直流電圧を伝達するための第2の電力線(PL4)との間で双方向の交流/直流電力変換を行なうための第3の電力変換器(202)と、
前記第2の電力線と前記主蓄電装置との間で双方向の直流/直流電力変換を行なうための第4の電力変換器(204)とを含み、
前記第2の電力変換において、前記第3の電力変換器および前記第4の電力変換器は、前記主蓄電装置からの電力を交流電力に変換して前記第1の電力線に出力し、
前記第2の電力変換器(210)は、前記第2の電力変換によって得られた前記第1の電力線の交流電力を、前記副蓄電装置(180)を充電するための直流電力に変換する、請求の範囲第1項記載の電動車両の電源システム。 - [規則91に基づく訂正 28.07.2011]
前記外部電源(260)は交流電力を供給し、
前記充電装置(200)は、
外部充電時に前記外部電源と接続される第1の電力線(ACL1,ACL2)の交流電力を直流電力に変換して、直流電圧を伝達するための第2の電力線(PL4)に出力するための第3の電力変換器(202)と、
前記第2の電力線と前記主蓄電装置との間で双方向の直流/直流電力変換を行なうための第4の電力変換器(204)とを含み、
前記第2の電力変換において、前記第4の電力変換器は、前記主蓄電装置からの電力を直流電圧変換して前記第2の電力線に出力し、
前記第2の電力変換器(210♯)は、前記第2の電力変換によって得られた前記第2の電力線の直流電力を、前記副蓄電装置(180)を充電するための直流電力に変換する、請求の範囲第1項記載の電動車両の電源システム。 - [規則91に基づく訂正 28.07.2011]
前記第1の電力変換器(170)の消費電力は、前記第2の電力変換器(210,210♯)の消費電力および前記充電装置(200)の前記第2の電力変換による消費電力の和よりも大きい、請求の範囲第1項~第5項のいずれか1項に記載の電動車両の電源システム。 - 前記第2の電力変換器(210,210♯)は、外部充電時には、前記外部電源からの電力を源に前記副蓄電装置の充電電力を発生するように構成され、
前記制御装置(300)は、前記外部充電時には、前記第1の電力変換器(170)を停止する一方で前記第2の電力変換器によって前記副蓄電装置(180)を充電する第3の充電を実行する、請求の範囲第1項~第5項のいずれか1項に記載の電動車両の電源システム。 - 外部電源(260)によって充電可能な電動車両(100)であって、
車両駆動パワーを発生する電動機(130)と、
前記電動機に対して入出力される電力を蓄積するための主蓄電装置(110)と、
前記主蓄電装置よりも出力電圧が低い副蓄電装置(180)と、
前記外部電源からの電力を前記主蓄電装置の充電電力に変換する第1の電力変換と、前記第1の電力変換とは逆方向の電力変換のうちの少なくとも一部である第2の電力変換とを選択的に実行するための充電装置(200)と、
前記主蓄電装置および前記電動機の間の経路に接続されて、前記主蓄電装置からの電力を前記副蓄電装置の充電電力に変換するための第1の電力変換器(170)と、
前記外部電源と接続するための接続部(250)および前記主蓄電装置の間の経路に接続されて、前記充電装置による前記第2の電力変換によって得られた電力を前記副蓄電装置の充電電力に変換するための、前記第1の電力変換器よりも定格出力が小さい第2の電力変換器(210,210♯)と、
前記副蓄電装置を充電する場合に、前記副蓄電装置の出力状態に応じて、前記充電装置および前記第2の電力変換器を停止する一方で前記第1の電力変換器によって前記副蓄電装置を充電する第1の充電と、前記第1の電力変換器を停止する一方で前記充電装置および前記第2の電力変換器によって前記副蓄電装置を充電する第2の充電とを選択的に実行するための制御装置(300)とを備える、電動車両。 - 前記制御装置(300)は、前記副蓄電装置の出力状態を示す状態値が、所定の判定値よりも低いときに前記第2の充電を選択して前記副蓄電装置を充電する、請求の範囲第8項記載の電動車両。
- [規則91に基づく訂正 28.07.2011]
前記第1の電力変換器(170)の消費電力は、前記第2の電力変換器(210,210♯)の消費電力および前記充電装置(200)の前記第2の電力変換による消費電力の和よりも大きい、請求の範囲第8項または第9項に記載の電動車両。 - 前記第2の電力変換器(210,210♯)は、外部充電時には、前記外部電源からの電力を源に前記副蓄電装置の充電電力を発生するように構成され、
前記制御装置(300)は、前記外部充電時には、前記第1の電力変換器(170)を停止する一方で前記第2の電力変換器によって前記副蓄電装置(180)を充電する第3の充電を実行する、請求の範囲第8項または第9項に記載の電動車両。 - 車両駆動パワーを発生する電動機(130)を搭載した電動車両の電源システムの制御方法であって、
前記電源システムは、
前記電動機対して入出力される電力を蓄積するための主蓄電装置(110)と、
前記主蓄電装置よりも出力電圧が低い副蓄電装置(180)と
外部電源(260)からの電力を前記主蓄電装置の充電電力に変換する第1の電力変換と、前記第1の電力変換とは逆方向の電力変換のうちの少なくとも一部である第2の電力変換とを選択的に実行するための充電装置(200)と、
前記主蓄電装置および前記電動機の間の経路に接続されて、前記主蓄電装置からの電力を前記副蓄電装置の充電電力に変換するための第1の電力変換器(170)と、
前記外部電源と接続するための接続部(250)および前記主蓄電装置の間の経路に接続されて、前記充電装置による前記第2の電力変換によって得られた電力を前記副蓄電装置の充電電力に変換するための、前記第1の電力変換器よりも定格出力が小さい第2の電力変換器(210,210♯)とを備え、
前記制御方法は、
前記副蓄電装置の充電要求を検知するステップ(S100)と、
前記充電要求に応答した充電開始時に前記副蓄電装置の出力状態を検出するステップ(S120)と、
検出した前記出力状態に応じて、前記充電装置および前記第2の電力変換器を停止する一方で前記第1の電力変換器によって前記副蓄電装置を充電する第1の充電と、前記第1の電力変換器を停止する一方で前記充電装置および前記第2の電力変換器によって前記副蓄電装置を充電する第2の充電とを選択するステップ(S130-S150,S150♯)とを備える、電動車両の電源システムの制御方法。 - 前記選択するステップ(S130-S150,S150♯)は、前記副蓄電装置(180)の出力状態を示す状態値が、所定の判定値よりも低いときに前記第2の充電を選択して前記副蓄電装置を充電する、請求の範囲第12項記載の電動車両の電源システムの制御方法。
- 前記状態値は、前記副蓄電装置の出力可能電力上限値(Wout2)、出力電圧(VB2)または、温度(Tb2)である、請求の範囲第13項記載の電動車両の電源システムの制御方法。
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CN103209855A (zh) | 2013-07-17 |
EP2631105A1 (en) | 2013-08-28 |
US8860363B2 (en) | 2014-10-14 |
US20130200846A1 (en) | 2013-08-08 |
EP2631105B1 (en) | 2017-03-22 |
EP2631105A4 (en) | 2015-07-29 |
CN103209855B (zh) | 2014-08-06 |
JP5459408B2 (ja) | 2014-04-02 |
JPWO2012053084A1 (ja) | 2014-02-24 |
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