WO2011104872A1 - 車両 - Google Patents
車両 Download PDFInfo
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- WO2011104872A1 WO2011104872A1 PCT/JP2010/053129 JP2010053129W WO2011104872A1 WO 2011104872 A1 WO2011104872 A1 WO 2011104872A1 JP 2010053129 W JP2010053129 W JP 2010053129W WO 2011104872 A1 WO2011104872 A1 WO 2011104872A1
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- WIPO (PCT)
- Prior art keywords
- relay
- charging
- storage device
- power storage
- power
- Prior art date
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Classifications
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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
- 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
- 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
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/19—Switching between serial connection and parallel connection of battery modules
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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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
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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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
- B60L2220/14—Synchronous machines
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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
- Y02T10/62—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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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a vehicle capable of charging an internal power storage device with an external power source.
- Patent Document 1 discloses a charge of a smoothing capacitor in a vehicle including a capacitor provided between input lines of an inverter that converts battery power and supplies it to a motor for driving a vehicle.
- a technique is disclosed in which a discharge relay and a discharge resistor are provided between the DC input lines and the charge of the smoothing capacitor is consumed by the discharge resistor by turning on the discharge relay.
- plug-in vehicles in which a battery inside the vehicle is charged with electric power from an external power source, is in progress.
- the plug-in vehicle is provided with a charging device that converts AC power from an external power source into DC power that can charge the battery.
- a capacitor is provided on the output side of the charging device.
- electric charge is stored in the capacitor of the charging device. Therefore, when the charging is completed, a charge remains in the capacitor of the charging device.
- providing a new discharge relay or discharge resistor leads to an increase in cost.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to charge the capacitor of the charging device without providing an additional component in a vehicle capable of charging the internal power storage device with an external power source. Is to discharge.
- the vehicle according to the present invention can be connected to an external power source.
- a load that consumes power a first relay, a second relay, and a plurality of battery modules that are divided and arranged in series are connected in series via a second relay.
- the first power storage device configured to be connected to the load and the load include a capacitor connected in parallel to the first power storage device and connected to the load via the first relay, and the power supplied from the external power source
- a charging device that converts electric power that can be charged into the first power storage device, and a control device that controls at least the first relay and the second relay are provided.
- the control device shuts off the first charging path from the charging device to the first power storage device by turning off the second relay and turns on the first relay. By securing a discharge path from the charging device to the load, the charge remaining in the capacitor is discharged through the load.
- the control device shuts off the discharge path by turning off the first relay and secures the first charge path by turning on the second relay.
- the vehicle further includes a third relay.
- the capacitor is connected to the first power storage device via the third relay and is connected to the load via the first relay and the third relay.
- the control device shuts off the discharge path by turning off the first relay, secures the first charging path by turning on the second relay and the third relay, and when charging is completed, The first charging path is cut off by turning off the second relay, and the discharging path is secured by turning on the first relay and the third relay.
- the vehicle is connected in parallel with the first power storage device to the load via the fourth relay, the fifth relay, and the fourth relay, and via the first relay, the third relay, and the fourth relay.
- a second power storage device connected to the capacitor via a fifth relay.
- the control device cuts off the discharge path by turning off the first relay and the fourth relay, and turns on the second relay, the third relay, and the fifth relay to turn on the first charging path and the charging.
- the first charging path and the second charging path are shut off by turning off the second relay, the fourth relay, and the fifth relay.
- the discharge path is secured by turning on the first relay and the third relay.
- the load is a power control device for converting the electric power of the first power storage device into electric power for driving an electric motor that generates driving force of the vehicle.
- the charge of the capacitor of the charging device can be discharged without providing additional components.
- FIG. 1 is an overall block diagram of a vehicle according to an embodiment of the present invention. It is a detailed block diagram of an electrical storage apparatus and a charger. It is a flowchart which shows the control processing procedure which ECU performs at the time of charge mode.
- FIG. 6 is a diagram (No. 1) illustrating a discharge path of electric charge remaining in a capacitor of a charger.
- FIG. 5 is a diagram (part 2) illustrating a discharge path of charges remaining in a capacitor of the charger.
- FIG. 6 is a diagram (No. 3) illustrating a discharge path of electric charge remaining in a capacitor of the charger.
- FIG. 1 is an overall block diagram of a vehicle 1 according to an embodiment of the present invention.
- this vehicle 1 includes an engine 10, a first MG (Motor Generator) 20, a second MG 30, a power split device 40, a speed reducer 50, a PCU (Power Control Unit) 60, and a power storage.
- a device 70 and a drive wheel 80 are provided.
- the vehicle 1 further includes a charging port 110, a charger 120, and an ECU (Electronic Control Unit) 150.
- first MG 20 and second MG 30 are connected to power split device 40.
- the vehicle 1 travels with driving force output from at least one of the engine 10 and the second MG 30.
- the power generated by the engine 10 is divided into two paths by the power split device 40. That is, one is a path that is transmitted to the drive wheels 80 via the speed reducer 50, and the other is a path that is transmitted to the first MG 20.
- the first MG 20 and the second MG 30 are AC motors, for example, three-phase AC synchronous motors.
- First MG 20 and second MG 30 are driven by PCU 60.
- First MG 20 generates power using the power of engine 10 divided by power split device 40.
- the electric power generated by first MG 20 is converted from AC to DC by PCU 60 and stored in power storage device 70.
- Second MG 30 generates driving force using at least one of the electric power stored in power storage device 70 and the electric power generated by first MG 20. Then, the driving force of the second MG 30 is transmitted to the driving wheels 80 via the speed reducer 50.
- the driving wheel 80 is shown as a front wheel, but the rear wheel may be driven by the second MG 30 instead of or together with the front wheel.
- the second MG 30 When the vehicle is braked, the second MG 30 is driven by the drive wheels 80 via the speed reducer 50, and the second MG 30 operates as a generator. Thereby, 2nd MG30 functions also as a regenerative brake which converts kinetic energy of vehicles into electric power.
- the electric power generated by second MG 30 is stored in power storage device 70.
- the power split device 40 includes a planetary gear including a sun gear, a pinion gear, a carrier, and a ring gear.
- the pinion gear engages with the sun gear and the ring gear.
- the carrier supports the pinion gear so as to be capable of rotating, and is connected to the crankshaft of the engine 10.
- the sun gear is connected to the rotation shaft of the first MG 20.
- the ring gear is connected to the rotation shaft of second MG 30 and speed reducer 50.
- PCU 60 converts the DC power stored in power storage device 70 into AC power for driving first MG 20 and second MG 30.
- PCU 60 includes a converter and an inverter that are controlled based on a control signal from ECU 150.
- the converter boosts the voltage of the DC power received from power storage device 70 and outputs the boosted voltage to the inverter.
- the inverter converts the DC power output from the converter into AC power and outputs the AC power to first MG 20 and / or second MG 30. Thereby, first MG 20 and / or second MG 30 are driven by the electric power stored in power storage device 70.
- the inverter converts AC power generated by the first MG 20 and / or the second MG 30 into DC power and outputs the DC power to the converter.
- the converter steps down the voltage of the DC power output from the inverter and outputs the voltage to power storage device 70. Thereby, power storage device 70 is charged with the electric power generated by first MG 20 and / or second MG 30.
- the PCU 60 also functions as a discharge circuit for the capacitor 122 of the charger 120. This point will be described in detail later.
- the power storage device 70 is a rechargeable DC power source, and is composed of, for example, a secondary battery such as nickel metal hydride or lithium ion.
- the voltage of power storage device 70 is, for example, about 200V.
- the power storage device 70 is charged with the electric power generated by the first MG 20 and / or the second MG 30 as described above, and is also charged with electric power supplied from the external power supply 210 as will be described later.
- a large-capacity capacitor can also be used as the power storage device 70.
- the charging port 110 is a power interface for receiving power from the external power source 210.
- the charging port 110 is connected to a charging cable connector 200 for supplying power from the external power source 210 to the vehicle.
- Charger 120 is electrically connected to charging port 110 and power storage device 70. In the charging mode in which charging of power storage device 70 from external power supply 210 is performed, charger 120 supplies the power supplied from external power supply 210 to the voltage level of power storage device 70 based on a control signal from ECU 150. The power storage device 70 is charged after conversion.
- ECU 150 generates a control signal for driving PCU 60 and charger 120, and outputs the generated control signal to PCU 60 and charger 120.
- FIG. 2 is a detailed configuration diagram of power storage device 70 and charger 120 shown in FIG.
- the power storage device 70 includes a first power storage device 71 and a second power storage device 72.
- First power storage device 71 and second power storage device 72 are connected to PCU 60 in parallel with each other.
- Each of the first power storage device 71 and the second power storage device 72 is an assembled battery in which a plurality of battery cells are connected in series.
- the first power storage device 71 is divided into a first module 71A and a second module 71B.
- the first module 71A and the second module 71B are connected in series via system main relays SMRA and SMRB. More specifically, the negative electrode of first module 71A and the positive electrode of second module 71B are connected via system main relays SMRA and SMRB.
- the first power storage device 71 is connected to the PCU 60 via the system main relays SMR1, SMR2. More specifically, the positive electrode of first power storage device 71 (the positive electrode of first module 71A) is connected to power line PL extending from PCU 60 via system main relay SMR1. The negative electrode of first power storage device 71 (the negative electrode of second module 71B) is connected to ground line GL extending from PCU 60 via system main relay SMR2.
- the second power storage device 72 is connected to the PCU 60 in parallel with the first power storage device 71 via the system main relays SMR3 and SMR4. More specifically, the positive electrode of second power storage device 72 is connected to power line PL via system main relay SMR3. The negative electrode of second power storage device 72 is connected to ground line GL via system main relay SMR4.
- the charger 120 includes a power converter 121, a capacitor 122, and a voltage sensor 123.
- power conversion unit 121 Based on a control signal from ECU 150, power conversion unit 121 converts AC power input from external power supply 210 via charging port 110 into DC power that can be charged in power storage device 70 and outputs the power to power storage device 70. To do.
- the capacitor 122 is provided on the output side of the charger 120. More specifically, the positive electrode of capacitor 122 is connected to a power line that connects power conversion unit 121 and power storage device 70. The negative electrode of capacitor 122 is connected to a ground line that connects power conversion unit 121 and power storage device 70. When the capacitor 122 stores or discharges electric charge, the electric power output from the power conversion unit 121 to the power storage device 70 is smoothed. Voltage sensor 123 detects inter-terminal voltage Vc of capacitor 122 and outputs the detection result to ECU 150.
- the capacitor 122 of the charger 120 is connected to the first power storage device 71 via charging relays CR1 and CR2, and is connected to the second power storage device 72 via charging relays CR3 and CR4. More specifically, the positive electrode of capacitor 122 is connected to point P1 between positive electrode of first power storage device 71 (positive electrode of first module 71A) and system main relay SMR1 via charging relay CR1. The negative electrode of capacitor 122 is connected to point G1 between negative electrode of first power storage device 71 (negative electrode of second module 71B) and system main relay SMR2 via charging relay CR2. Further, the positive electrode of capacitor 122 is connected to point P2 between the positive electrode of second power storage device 72 and system main relay SMR3 via charging relay CR3.
- capacitor 122 is connected to point G2 between negative electrode of second power storage device 72 and system main relay SMR4 via charging relay CR4. Therefore, capacitor 122 is connected to PCU 60 via charging relays CR1 and CR2 and system main relays SMR1 and SMR2, and is connected to PCU 60 via charging relays CR3 and CR4 and system main relays SMR3 and SMR4. .
- ON / OFF of the system main relays SMR1 to SMR4, SMRA, SMRB and charging relays CR1 to CR4 are controlled by control signals S1 to S4, SA, SB, C1 to C4 from the ECU 150, respectively.
- FIG. 3 is a flowchart showing a control processing procedure performed by the ECU 150 in the charging mode. This flowchart is started when the user connects the connector 200 to the charging port 110, for example.
- Each step of the flowchart (hereinafter abbreviated as “S”) is basically realized by software processing by the ECU 150, but may be realized by hardware processing by an electronic circuit or the like provided in the ECU 150. .
- ECU 150 turns on charging relays CR1 to CR4 and system main relays SMRA and SMRB, and turns off system main relays SMR1 to SMR4.
- ECU 150 charges power storage device 70 using the electric power of external power supply 210. That is, ECU 150 controls charger 120 so that AC power input from external power supply 210 via charging port 110 is converted into DC power that can be charged in power storage device 70 and output to power storage device 70. .
- ECU 150 determines whether or not charging of power storage device 70 from external power supply 210 has been completed. This determination is made based on, for example, whether or not the amount of electric power stored in first power storage device 71 and second power storage device 72 has reached a target value.
- ECU 150 turns on charging relays CR1, CR2 and system main relays SMR1, SMR2 in S40, and system main relays SMRA, SMRB, charging relay CR3, CR4 and system main relays SMR3 and SMR4 are turned off.
- ECU 150 determines whether or not voltage Vc between terminals of capacitor 122 is smaller than predetermined value V0. If terminal voltage Vc of capacitor 122 is greater than predetermined value V0 (NO in S50), the process returns to S40. When terminal voltage Vc of capacitor 122 is smaller than predetermined value V0 (YES in S40), ECU 150 ends the charging mode. Note that each relay is turned off after the end of the charging mode. Thereafter, when the user operates a start switch (not shown) in order to drive vehicle 1, system main relays SMR1-SMR4, SMRA, SMRB are turned on, and power storage device 70 and PCU 60 are connected.
- charging relays CR1 to CR4 and system main relays SMRA and SMRB are turned on until charging of power storage device 70 from external power supply 210 is completed (S10).
- power storage device 70 and charger 120 are connected, and a charging path from external power supply 210 to power storage device 70 (a charging path from external power supply 210 to first power storage device 71 and a second power storage device 72 from external power supply 210). Charging path) is secured.
- system main relays SMR1 to SMR4 are turned off, and the connection between power storage device 70 and PCU 60 and the connection between charger 120 and PCU 60 are cut off. Therefore, the discharge path from power storage device 70 and charger 120 to PCU 60 is blocked.
- the charging relays CR1 to CR4 are not immediately turned off, but the charging relays CR1 and CR2 and the system main relays SMR1 and SMR2 are turned on, so that the charger 120 is turned on. And PCU 60 are connected. Thereby, a discharge path from the capacitor 122 of the charger 120 to the PCU 60 is secured.
- FIG. 4 shows a discharge path from the capacitor 122 of the charger 120 to the PCU 60.
- the capacitor 122 and the PCU 60 are connected by turning on the charging relays CR1 and CR2 and the system main relays SMR1 and SMR2, the charge remaining in the capacitor 122 is discharged through the PCU 60 when the charging is completed. Will be.
- the PCU 60 functions as a discharge circuit for the capacitor 122, the charge remaining in the capacitor 122 can be discharged without providing a new dedicated discharge circuit.
- the system main relays SMRA and SMRB are turned off, and the energization path inside the first power storage device 71 is cut off.
- the charging path from capacitor 122 to first power storage device 71 is interrupted.
- Charging relays CR3 and CR4 and system main relays SMR3 and SMR4 are turned off, and the charging path from capacitor 122 to second power storage device 72 is also cut off. Therefore, it is possible to prevent the charge remaining in the capacitor 122 after the completion of charging from being charged in the first power storage device 71 and the second power storage device 72 and becoming overcharged.
- vehicle 1 cuts off the charging path from charger 120 to power storage device 70 by controlling each relay when charging from power source 210 to power storage device 70 is completed.
- a discharge path from the charger 120 to the PCU 60 is secured.
- the charge remaining at the completion of charging in the capacitor 122 provided on the output side of the charger 120 can be discharged through the PCU 60 without being supplied to the power storage device 70 after the charging is completed. Therefore, the charge remaining in the capacitor 122 can be discharged while preventing overcharging of the power storage device 70 and without newly providing a dedicated discharge circuit.
- the present embodiment can be modified as follows, for example.
- the present invention is applied to the vehicle 1 including the first power storage device 71 and the second power storage device 72, but the present invention may be applied to a vehicle including only the first power storage device 71.
- the electric charge remaining in the capacitor 122 is discharged through the PCU 60, but it may be discharged through another existing device.
- the charging relays CR1 and CR2 in the process of S40 in FIG. 3, the charging relays CR1 and CR2, the system main relays SMR1 and SMR2 are turned on, the system main relays SMRA and SMRB, the charging relays CR3 and CR4, and the system main relays SMR3 and SMR4. Turned off.
- the ON / OFF combination of each relay in the process of S40 in FIG. 3 is a combination that can cut off the charging path from charger 120 to power storage device 70 and secure the discharging path from charger 120 to PCU 60. I just need it. Therefore, the combination of ON / OFF of each relay can be changed as follows, for example.
- the charging relays CR2 and CR3 and the system main relays SMR2 and SMR3 are turned on, and the charging relays CR1 and CR4 and the system main relays SMR1, SMR4, SMRA and SMRB are turned on. Turn off. Even with such a combination, the electric charge remaining in the capacitor 122 can be discharged through the PCU 60 while preventing the power storage device 70 from being overcharged.
- the charging relays CR1 and CR4 and the system main relays SMR1 and SMR4 are turned on, and the charging relays CR2 and CR3 and the system main relays SMR2, SMR3, SMRA and SMRB are turned on. Turn off. Even with such a combination, the charge remaining in the capacitor 122 can be discharged through the PCU 60 while preventing the power storage device 70 from being overcharged.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
本実施例では、蓄電装置70は、第1蓄電装置71と、第2蓄電装置72とを含む。第1蓄電装置71および第2蓄電装置72は、互いに並列にPCU60に接続される。第1蓄電装置71および第2蓄電装置72は、いずれも複数の電池セルを直列に接続した組電池である。
本実施例では、第1蓄電装置71および第2蓄電装置72を備える車両1に本発明を適用したが、第1蓄電装置71のみを備える車両に本発明を適用してもよい。
Claims (5)
- 外部電源(210)との接続が可能な車両であって、
電力を消費する負荷(60)と、
第1リレー(SMR1、SMR2)と、
第2リレー(SMRA、SMRB)と、
前記第1リレーを介して前記負荷に接続され、分割して配置された複数の電池モジュール(71A、71B)が前記第2リレーを介して直列に接続されて構成される第1蓄電装置(71)と、
前記負荷とは並列に前記第1蓄電装置に接続されるとともに前記第1リレーを介して前記負荷に接続されるコンデンサ(122)を含み、前記外部電源から供給される電力を前記第1蓄電装置に充電可能な電力に変換する充電装置(120)と、
少なくとも前記第1リレーおよび前記第2リレーを制御する制御装置(150)とを備え、
前記制御装置は、前記外部電源から前記第1蓄電装置への充電が完了した場合、前記第2リレーをオフすることで前記充電装置から前記第1蓄電装置への第1充電経路を遮断するとともに前記第1リレーをオンすることで前記充電装置から前記負荷への放電経路を確保することによって、前記コンデンサに残った電荷を前記負荷を通じて放電させる、車両。 - 前記制御装置は、前記充電を行なう場合、前記第1リレーをオフすることで前記放電経路を遮断するとともに、前記第2リレーをオンすることで前記第1充電経路を確保する、請求の範囲第1項に記載の車両。
- 前記車両は、第3リレー(CR1、CR2)をさらに備え、
前記コンデンサは、前記第3リレーを介して前記第1蓄電装置に接続されるとともに前記第1リレーおよび前記第3リレーを介して前記負荷に接続され、
前記制御装置は、
前記充電を行なう場合、前記第1リレーをオフすることで前記放電経路を遮断するとともに、前記第2リレーおよび前記第3リレーをオンすることで前記第1充電経路を確保し、
前記充電が完了した場合、前記第2リレーをオフすることで前記第1充電経路を遮断するとともに、前記第1リレーおよび前記第3リレーをオンすることで前記放電経路を確保する、請求の範囲第2項に記載の車両。 - 前記車両は、
第4リレー(SMR3、SMR4)と、
第5リレー(CR3、CR4)と、
前記第4リレーを介して前記負荷に前記第1蓄電装置とは並列に接続されるとともに、前記第1リレー、前記第3リレーおよび前記第4リレーを介して前記コンデンサに接続され、かつ前記第5リレーを介して前記コンデンサに接続される第2蓄電装置(72)とをさらに備え、
前記制御装置は、
前記充電を行なう場合、前記第1リレーおよび前記第4リレーをオフすることで前記放電経路を遮断するとともに、前記第2リレー、前記第3リレーおよび前記第5リレーをオンすることで前記第1充電経路および前記充電装置から前記第2蓄電装置への第2充電経路を確保し、
前記充電が完了した場合、前記第2リレー、前記第4リレーおよび前記第5リレーをオフすることで前記第1充電経路および前記第2充電経路を遮断するとともに、前記第1リレーおよび前記第3リレーをオンすることで前記放電経路を確保する、請求の範囲第3項に記載の車両。 - 前記負荷は、前記第1蓄電装置の電力を前記車両の駆動力を発生する電動機(20、30)を駆動するための電力に変換するための電力制御装置である、請求の範囲第1項に記載の車両。
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EP2541724A4 (en) | 2015-11-25 |
JP5348312B2 (ja) | 2013-11-20 |
US20120313584A1 (en) | 2012-12-13 |
EP2541724A1 (en) | 2013-01-02 |
JPWO2011104872A1 (ja) | 2013-06-17 |
CN102771029B (zh) | 2014-08-06 |
CN102771029A (zh) | 2012-11-07 |
US8836272B2 (en) | 2014-09-16 |
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