JP2013133042A - Vehicle and control method of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle which can be externally charged, in which deterioration in a relay provided in an electric power transmission path is suppressed when the vehicle is charged in a parking lot including charging equipment of which the charging electric power is limited due to other vehicles entering and leaving the parking lot.SOLUTION: In the vehicle 100, an electric storage device 110 can be charged by using electric power transmitted from an electric power transmission device 200 via a charging cable 400. The vehicle 100 includes: the relays 115, 180 provided in an electric power transmission path from an inlet 175 to the electric storage device 110, and an ECU 300 which controls the relays 115, 180. The ECU 300 includes an electric power transmission device 200 capable of supplying charging electric power, and maintains the relays 115, 180 in a connected state while the charging electric power is limited due to entering/leaving of other vehicles when performing external charging during parking in a parking lot where the charging electric power is limited when other vehicles enter/leave the parking lot.

Description

  The present invention relates to a vehicle and a vehicle control method, and more particularly to charge control of a vehicle that can be charged using electric power from an external power source.

  2. Description of the Related Art In recent years, attention has been paid to a vehicle that is mounted with a power storage device (for example, a secondary battery or a capacitor) and travels using driving force generated from electric power stored in the power storage device as an environment-friendly vehicle. Such vehicles include, for example, electric vehicles, hybrid vehicles, fuel cell vehicles, and the like. And the technique which charges the electrical storage apparatus mounted in these vehicles with a commercial power source with high electric power generation efficiency is proposed.

  In a hybrid vehicle as well as an electric vehicle, charging of an in-vehicle power storage device (hereinafter also simply referred to as “external charging”) using electric power from a power source outside the vehicle (hereinafter also simply referred to as “external power source”). ) Is possible. For example, a so-called “plug-in hybrid vehicle” is known in which a power supply outlet provided in a house and a charging port provided in a vehicle are connected by a charging cable so that the power storage device can be charged from a general household power source. ing. This can be expected to increase the fuel consumption efficiency of the hybrid vehicle.

  In addition, corresponding to such vehicles that can be externally charged, parking lots where power transmission devices for enabling external charging during parking have appeared.

  Japanese Patent Application Laid-Open No. 2011-188657 (Patent Document 1) discloses a power supply for supplying power to a driving facility for driving a multi-story parking lot and a charging facility for a vehicle in a multi-story parking lot having a charging facility for an electric vehicle. Charging operation to the vehicle when it is necessary to move in or out of another vehicle while charging at least one parked vehicle so that the total power supplied to the vehicle does not exceed the contracted power Is temporarily interrupted or suppressed to supply power to the drive power system, and the vehicle charging operation is resumed when the loading / unloading operation is completed.

  Moreover, in Unexamined-Japanese-Patent No. 2011-117157 (patent document 2), in the multistory parking lot which can charge an electric vehicle, when the vehicle storage mechanism of a multistory parking lot has stopped, the power supply capacity of a multistory parking lot is set. When the vehicle storage function is operating to charge the vehicle to the maximum possible use, and to enter and exit another vehicle, charge the vehicle with a small amount of power that does not interfere with the operation of the vehicle storage mechanism. A configuration for switching to is disclosed.

  According to the configuration of the above Japanese Patent Application Laid-Open No. 2011-188657 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2011-117157 (Patent Document 2), the increase in contract power and the installation of new electrical equipment can be achieved without a three-dimensional structure. In a parking lot, the vehicle can be charged efficiently using existing electrical equipment.

JP 2011-188657 A JP 2011-117157 A JP 2011-099260 A JP 2009-071900 A JP 2000-1101616 A

  In a vehicle capable of external charging, if the supplied power falls below a predetermined level during charging, it may be determined that a power failure has occurred and the charging operation is stopped. When the charging operation is stopped, driving of the power conversion device for converting the supplied power into the charging power of the power storage device is stopped, and a switch such as a relay provided in the power transmission path is opened to be non-conductive. Is done.

  When charging a vehicle in a multi-story parking lot such as Japanese Patent Application Laid-Open No. 2011-188657 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2011-117157 (Patent Document 2), charging is performed along with loading / unloading of other vehicles. Charging power is limited or stopped during the operation. Then, as described above, in the vehicle in which the charging operation is stopped as the supply power is reduced, the opening and connection of the relay are repeated each time another vehicle enters and exits. As described above, when the number of relay operations increases, the deterioration of the relay is promoted, the life of the relay is shortened, and the occurrence of failures and abnormalities may increase.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a charging facility in which charging power is limited in accordance with entering / exiting other vehicles in a vehicle capable of external charging. When charging is performed in a parking lot having, the deterioration of the relay provided in the power transmission path is suppressed.

  The vehicle according to the present invention is capable of external charging that charges the power storage device mounted using the power from the external power source. The vehicle includes a power receiving unit that receives power from the external power source, and from the power receiving unit to the power storage device. And a relay for switching between supply and interruption of power to the power storage device, and a control device for controlling the relay. The control device can supply power for external charging during parking, and when performing external charging in a parking lot where power for external charging is restricted when entering and leaving other vehicles. The relay is maintained in the connected state when the supplied electric power is limited with the entry / exit of other vehicles.

  Preferably, the control device maintains the relay in a connected state until a predetermined first period elapses after electric power supplied from the parking lot is limited.

  Preferably, when the external charging is performed outside the parking lot, the control device has a function of maintaining the relay in the connected state for the second period in response to the stop of the power supply during the external charging. Have. The first period is set longer than the second period.

  Preferably, the first period is determined based on the time required for the entering / exiting operation in the parking lot.

  Preferably, the control device receives information indicating that another vehicle is entering / exiting from the parking lot. The control device does not count the elapsed time of the first period when the information is received.

  Preferably, the control device receives information indicating that another vehicle is entering / exiting from the parking lot. The control device maintains the relay in a connected state while another vehicle is entering / exiting according to the information.

  Preferably, the control device responds that, when external charging is performed in a parking lot in a state set by the user in a predetermined mode, the supplied power is limited in accordance with entry / exit of another vehicle. To maintain the relay in the connected state.

  Preferably, the vehicle receives power from an external power source via a charging cable connected to the power receiving unit. The charging cable is provided in a power transmission path from the external power source to the power receiving unit, and includes another relay that switches between supply and interruption of power to the vehicle. The control device can switch other relays. When external charging is performed in the parking lot, the control device maintains the other relays in the connected state when the supplied power is restricted with the entry / exit of other vehicles.

  Preferably, the parking lot is a three-dimensional parking lot capable of accommodating a plurality of vehicles, and the driving power for driving the parking lot and the supply power for external charging are supplied from the same power source.

  Preferably, the parking lot is configured so that when the other vehicles are continuously loaded and unloaded, after the loading and unloading operation is completed and the electric power for external charging is supplied for a predetermined period, the next loading and unloading is performed. Start operation.

  The vehicle control method according to the present invention is a control method for a vehicle capable of external charging in which a power storage device mounted using electric power from an external power source is charged. The vehicle includes a power receiving unit that receives power from an external power source, and a relay that is provided in a power transmission path from the power receiving unit to the power storage device and switches between supply and interruption of power to the power storage device. When the external charging is performed in a parking lot where electric power for external charging is possible during parking and power for external charging is restricted when entering / exiting other vehicles, A step of detecting that the power supplied from the parking lot is restricted as a result of entering and leaving other vehicles; and a step of maintaining the relay in a connected state when the power supplied is restricted.

  The vehicle according to the present invention can be externally charged by charging a power storage device mounted using electric power from an external power source. The vehicle includes a power receiving unit that receives power from an external power source, a relay that is provided in a power transmission path from the power receiving unit to the power storage device, and switches between supply and interruption of power to the power storage device, and for controlling the relay And a control device. When the power supplied from the external power source is limited, the control device maintains the relay in a connected state for a predetermined period after the power is limited. The control device can supply power for external charging during parking, and when performing external charging in a parking lot where power for external charging is restricted when entering and leaving other vehicles, The predetermined period is set longer than when external charging is performed outside the parking lot.

  According to the present invention, in a vehicle capable of external charging, a relay provided in a power transmission path when charging is performed in a parking lot having a charging facility in which charging power is restricted as a result of entering and leaving other vehicles. Can be prevented.

It is a system schematic diagram of a multistory parking lot capable of external charging. FIG. 2 is a block diagram when charging a vehicle according to the present embodiment in the multi-story parking lot of FIG. 1. It is a whole block diagram of the charge system using the charge cable installed in the power transmission apparatus of a parking lot. In this Embodiment, it is a functional block diagram for demonstrating the charge control performed by ECU. In this Embodiment, it is a flowchart for demonstrating the charge control process performed by ECU.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  FIG. 1 is a schematic view of a system of a multilevel parking lot 10 capable of external charging. Referring to FIG. 1, multilevel parking lot 10 includes a power supply unit 20, a drive unit 30, and a plurality of pallets 50 for storing a plurality of vehicles 100. In addition, although the number of pallets is arbitrary and each pallet is displayed like 50-1 and 50-2 in FIG. 1, these shall be collectively described as the pallet 50. Similarly, the vehicle, the power transmission device, and the charging cable are collectively described as the vehicle 100, the power transmission device 200, and the charging cable 400.

  The pallet 50 is provided with a power transmission device 200 for supplying charging power to the vehicle 100 stored in the pallet 50. The power transmission device 200 and the vehicle 100 are coupled by a charging cable 400, and power from the power transmission device 200 is supplied to the vehicle 100.

  The power supply unit 20 receives power from a power source 40 such as a commercial power supply, and supplies the received power to the drive unit 30 and the power transmission device 200 in each pallet 50. The power supply unit 20 can individually control the supply and stop of power to the drive unit 30 and each power transmission device 200 and the magnitude of the supplied power.

  The drive unit 30 uses the power from the power supply unit 20 to move the pallet 50 or drive an opening / closing door, turntable, etc. (not shown) when the vehicle enters and leaves the multistory parking lot 10. To do.

  In addition, the three-dimensional parking lot in this specification shall mean the parking lot which has a structure where a pallet is moved using electric power, and is limited to the type of parking lot in which the pallet is moved in a direction perpendicular to the ground. It includes those that are moved in a plane, and combinations thereof.

  FIG. 2 is a block diagram when each pallet 50 in FIG. 1 charges vehicle 100 according to the present embodiment.

  Referring to FIG. 2, vehicle 100 includes a power storage device 110, a system main relay (hereinafter also referred to as SMR (System Main Relay)) 115, a PCU (Power Control Unit) 120 as a driving device, a motor generator. 130, 135, power transmission gear 140, drive wheel 150, engine 160, and control device (hereinafter also referred to as ECU (Electronic Control Unit)) 300.

  The power storage device 110 is a power storage element configured to be chargeable / dischargeable. The power storage device 110 includes, for example, a secondary battery such as a lithium ion battery, a nickel metal hydride battery, or a lead storage battery, or a cell of a power storage element such as an electric double layer capacitor.

  Power storage device 110 is connected to PCU 120 for driving motor generators 130 and 135 via SMR 115. Then, power storage device 110 supplies power for generating driving force of vehicle 100 to PCU 120. The power storage device 110 stores the electric power generated by the motor generator 130. The output of power storage device 110 is, for example, 200V.

  SMR 115 includes a relay connected between a positive electrode terminal of power storage device 110 and power line PL1, and a relay connected between a negative electrode terminal of power storage device and power line NL1. SMR 115 is controlled by control signal SE <b> 1 from ECU 300, and switches between power supply and cutoff between power storage device 110 and PCU 120.

  PCU 120 includes a converter 121, inverters 122 and 123, and capacitors C1 and C2.

  Converter 121 performs voltage conversion between power lines PL1, NL1 and power lines PL2, NL1 based on control signal PWC from ECU 300.

  Inverters 122 and 123 are connected in parallel to power lines PL2 and NL1. Inverters 122 and 123 convert DC power supplied from converter 121 to AC power based on control signals PWI1 and PWI2 from ECU 300, and drive motor generators 130 and 135, respectively.

  Capacitor C1 is provided between power lines PL1 and NL1, and reduces voltage fluctuation between power lines PL1 and NL1. Capacitor C2 is provided between power lines PL2 and NL1, and reduces voltage fluctuation between power lines PL2 and NL1.

  Motor generators 130 and 135 are AC rotating electric machines, for example, permanent magnet type synchronous motors having a rotor in which permanent magnets are embedded.

  The output torque of motor generators 130 and 135 is transmitted to drive wheels 150 and engine 160 via power transmission gear 140 constituted by a speed reducer and a power split mechanism, and causes vehicle 100 to travel. The motor generator 130 can generate electric power by the rotational force of the drive wheels 150 during the regenerative braking operation of the vehicle 100. Then, the generated power is converted into charging power for power storage device 110 by PCU 120.

  Engine 160 is controlled by control signal DRV from ECU 300. In the present embodiment, motor generator 130 is exclusively driven by engine 160 to operate as a generator for generating electric power, and motor generator 135 exclusively drives drive wheels 150 to run vehicle 100. It shall operate as an electric motor.

  In the present embodiment, a configuration in which two pairs of motor generators and inverters are provided is shown as an example. However, the number of pairs of motor generators and inverters may be one or more than two. Also good.

  In the present embodiment, vehicle 100 will be described as an example of a hybrid vehicle as described above. However, the configuration of vehicle 100 is a vehicle equipped with an electric motor for generating vehicle driving force. The configuration is not limited. That is, the vehicle 100 includes, in addition to a hybrid vehicle that generates vehicle driving force by an engine and an electric motor as shown in FIG.

  Vehicle 100 further includes power conversion device 170, charging relay CHR 180, and inlet 175 that is a power receiving unit, as a configuration for charging power storage device 110 using power from power transmission device 200.

  Inlet 175 is provided in the body of vehicle 100 to receive power from power transmission device 200. The charging connector 410 of the charging cable 400 is connected to the inlet 175. Then, the plug 420 of the charging cable 400 is connected to the outlet 210 of the power transmission device 200, whereby the power from the power transmission device 200 is transmitted to the vehicle 100 via the electric wire portion 430 of the charging cable 400. The power source 220 in FIG. 2 represents the power supplied from the power supply unit 20 in FIG.

  A charging circuit interrupting device (hereinafter also referred to as “CCID (Charging Circuit Interrupt Device)”) 440 for switching between power supply from the power transmission device 200 to the vehicle 100 and interruption is provided in the electric wire portion 430 of the charging cable 400. Is inserted.

  Power conversion device 170 is connected to inlet 175 via power lines ACL1 and ACL2. In addition, power conversion device 170 is connected to power lines PL1 and NL1 through power lines PL3 and NL3 via CHR180. Then, power conversion device 170 converts AC power supplied from power transmission device 200 into DC power that power storage device 110 can charge based on control signal PWD from ECU 300.

  CHR 180 includes a relay connected to power line PL1 and power line PL3, and a relay connected to power line NL1 and power line NL3. CHR 180 switches between supply and interruption of power from power conversion device 170 to power storage device 110 based on control signal SE2 from ECU 300. In FIG. 2, a configuration in which CHR 180 is connected to power lines PL <b> 1 and NL <b> 1 is shown as an example, but CHR 180 may be connected to power storage device 110 without going through SMR 115.

  A communication device 190 for performing power line communication (PLC) is connected to power lines ACL1 and ACL2. The communication device 190 can exchange information with the communication device 230 of the power transmission device 200 via the power lines ACL1 and ACL2 and the charging cable 400. The communication device 190 transmits information transmitted from the ECU 300 to the communication device 230 on the power transmission device 200 side. Communication device 190 receives information transmitted from communication device 230 and transmits it to ECU 300.

  In the present invention, this PLC communication device is not essential, and there may be cases where these communication devices are not provided. Further, the communication method is not limited to the one based on the PLC. For example, wireless communication may be used, and when a signal line for communication is provided on the charging cable, wired communication using the signal line is performed. You may make it perform.

  ECU 300 includes a CPU (Central Processing Unit), a storage device, and an input / output buffer, all of which are not shown in FIG. 2, and inputs signals from sensors and the like and outputs control signals to each device. 100 and each device are controlled. Note that these controls are not limited to processing by software, and can be processed by dedicated hardware (electronic circuit).

  ECU 300 receives detected values of voltage VB and current IB of power storage device 110 detected by a voltage sensor and a current sensor (not shown) included in power storage device 110, respectively. ECU 300 calculates a state of charge (SOC) of power storage device 110 based on voltage VB and current IB.

  When charging connector 410 of charging cable 400 is connected to inlet 175 of vehicle 100, ECU 300 receives signal PISW indicating connection of charging connector 410 from inlet 175. ECU 300 receives pilot signal CPLT from CCID 440 when charging connector 410 is connected to inlet 175.

  ECU 300 is activated based on the reception of pilot signal CPLT. Further, ECU 300 can control the voltage of pilot signal CPLT, and by setting the voltage of pilot signal CPLT to a predetermined voltage, a relay provided in CCID 440 (hereinafter referred to as “CCID relay”). Can be controlled.

  ECU 300 also receives a mode signal MOD indicating that the charging operation is performed in a multi-story parking lot as shown in FIG. The mode signal MOD is input by a user operation from an input unit (not shown) such as a switch or a touch panel. Or when the communication apparatus which can communicate with the power transmission apparatus 200 as mentioned above is provided, you may make it receive the said mode signal MOD with the information transmitted from the communication apparatus 230 by the side of the power transmission apparatus 200. .

  In FIG. 2, ECU 300 is described as one control device, but a separate control device may be provided for each device or function.

  2 is an individual cable that can be separated from the vehicle 100 and the power transmission device 200, and the charging cable 400 is provided with the CCID 440. As shown in FIG. The charging cable 400A may be installed in advance in the power transmission device 200A. In this case, the function of CCID 440 in FIG. 2 is provided in power transmission device 200A (CCID 240).

  As described above, when external charging is performed in a multi-story parking lot where charging power is limited when entering and leaving other vehicles, when charging power is limited (especially stopped), The vehicle side recognizes that a power failure has occurred and controls to stop the charging operation. As a result, relays such as SMR and CHR provided in the power transmission path are switched from the connected state to the disconnected state.

  However, in a multi-story parking lot, since vehicles are frequently loaded and unloaded, switching the relays for each loading and unloading operation may promote the deterioration of the relays and lead to a shortened life.

  In order to prevent unintentional charging stop by the user when the load on the power system becomes excessive and the voltage drops, or when an instantaneous power failure (instantaneous power failure) occurs due to lightning strike, the power supply is stopped. There are cases where measures are taken to keep the relay connected for several seconds later. However, since the time required for the entry / exit operation of the vehicle is sufficiently longer than that, even if the configuration has such a function, as a result, the relay operates every time the entry / exit operation is performed.

  Therefore, in the present embodiment, when external charging is performed during parking in such a multilevel parking lot, while the charging power is limited, the charging operation is performed while maintaining the relay of the power transmission path in the connected state. By temporarily interrupting the relay, it prevents frequent activation of the relay. Thereby, deterioration of these relays is suppressed.

  FIG. 4 is a functional block diagram for illustrating charge control executed by ECU 300 in the present embodiment. Each functional block described in the functional block diagram illustrated in FIG. 4 is realized by hardware or software processing by ECU 300.

  2 and 4, ECU 300 includes a mode selection unit 310, a determination unit 320, a relay control unit 330, and a charge control unit 340.

  The mode selection unit 310 receives a mode signal MOD that is set based on settings by the user or information from the power transmission device 200. Based on the received mode signal MOD, the mode selection unit 310 determines whether or not it is external charging in the multilevel parking lot. Mode selection section 310 then outputs the determined selection signal SEL to determination section 320. For example, the selection signal SEL is set to ON in the case of external charging in a multilevel parking lot, and is set to OFF in the case of external charging outside a multilevel parking lot.

  Determination unit 320 receives selection signal SEL from mode selection unit 310 and pilot signal CPLT from CCID 440. When PLC communication with power transmission device 200 is possible, determination unit 320 further receives information INFO transmitted from power transmission device 200.

  Based on these pieces of information, the determination unit 320 determines whether or not the charging power from the power transmission device 200 is restricted with the loading / unloading of another vehicle during execution of the charging operation. Then, determination unit 320 outputs determination flag FLG, which is the determination result, to relay control unit 330 and charge control unit 340.

  The contents of the determination flag FLG include, for example, that charging power is limited during charging in a multilevel parking lot, charging power is limited during charging outside a multilevel parking lot, and charging power. Is not limited. Here, “charging power is limited” includes a case where charging power is set low and a case where charging power is stopped.

  Relay control unit 330 receives determination flag FLG from determination unit 320. The relay control unit 330 generates control signals SE1 and SE2 that make the SMR 115 and the CHR 180 conductive when charging is performed without limiting the charging power, and outputs the control signals SE1 and SE2 to the SMR 115 and CHR 180.

  The relay control unit 330 maintains the state in which the SMR 115 and the CHR 180 are connected for a predetermined period when charging power is limited while executing external charging outside the multilevel parking lot, If the charging power does not recover during the predetermined period, SMR 115 and CHR 180 are disconnected.

  This is because the charging operation is reset and relayed when a momentary power outage or voltage fluctuation occurs due to the start of other electrical equipment, lightning, etc., or when the user accidentally disconnects the charging cable. This is to suppress the frequent opening and closing of the. Therefore, the first period is relatively short, for example, set to about 1 to 5 seconds.

  The relay control unit 330 maintains the state where the SMR 115 and the CHR 180 are connected for a period longer than the predetermined period when the charging power is limited while executing external charging in the multi-story parking lot.

  This is because, as described above, in a multi-story parking garage, the charging power may be limited with the entry / exit of other vehicles, so the relay is kept connected until the entry / exit operation is completed. The purpose of this is to temporarily interrupt the charging operation as it is, and to suppress frequent opening and closing of the relays associated with loading and unloading of other vehicles. Therefore, in this case, the period during which the relay is maintained in the connected state is set based on the time required for entry / exit of the vehicle in the multilevel parking lot.

  Charging control unit 340 receives the SOC of power storage device 110 and determination flag FLG from determination unit 320. When the charging power is not limited, charging control unit 340 generates control signal PWD based on the SOC and controls power conversion device 170.

  In addition, when the determination flag FLG indicates that the charging power is limited, the charging control unit 340 generates the control signal PWD so as to temporarily interrupt the charging operation. In the state where the charging power is set low without being stopped, the charging operation may be continued without stopping the charging operation if the charging operation is possible.

  In the above description, the charging operation is interrupted by a preset timer. However, when communication with the power transmission device 200 is possible, the charging operation is replaced with the timer setting as described above. The charging operation may be interrupted while the relay is in the connected state in accordance with a signal indicating that the entry / exit is included in the reception information INFO. Alternatively, the timer may be stopped while receiving a signal indicating that the entry / exit is included in the reception information INFO.

  FIG. 5 is a flowchart for illustrating a charging control process executed by ECU 300 in the present embodiment. In the flowchart shown in FIG. 5, the process is realized by a program stored in advance in ECU 300 being called from the main routine and executed in a predetermined cycle. Alternatively, for some steps, it is also possible to construct dedicated hardware (electronic circuit) and realize processing.

  Referring to FIGS. 2 and 5, ECU 300 determines whether or not external charging is being performed in the multilevel parking lot when vehicle 100 is being charged at step (hereinafter, step is abbreviated as S) 100. Determine whether. This determination is performed based on the mode setting by the user or information received from the power transmission device 200 through communication as described above.

  When external charging is being performed in the multi-story parking lot (YES in S100), the process proceeds to S110, and the ECU 300 limits the charging power supplied from the power transmission device 200 as other vehicles enter and exit. It is determined whether or not. This determination is based on the fact that the pilot signal CPLT from the CCID 440 is stopped due to the stop of the charging power, or when the communication with the power transmission device 200 is possible, the instruction of the supplied charging power sets the predetermined threshold value Pth. This is done by a signal indicating that the number has fallen below or that the store is in / out.

  If charging power is not limited (NO in S110), ECU 300 advances the process to S115 and continues the charging operation. Thereafter, ECU 300 returns the process to S100.

  If charging power is limited (YES in S110), ECU 300 then interrupts the charging operation and advances the process to S120, and charging connector 410 is connected to inlet 175 based on signal PISW. It is determined whether or not.

  If charging connector 410 is being connected (YES in S120), the process proceeds to S130, and ECU 300 determines whether or not the state where the charging power is limited continues for a predetermined period (α seconds). . As described above, the predetermined period is determined based on the time required for the vehicle to enter and exit, and is set to about 500 seconds, for example.

  If the charging power limit period has not reached α seconds (NO in S130), the process returns to S100, and ECU 300 interrupts the charging operation while keeping SMR115, CHR180, and the CCID relay connected. Continue state.

  In this state, when the restriction on charging power is released (NO in S110), the charging operation is restarted in S115.

  If the charging power limit period continues for α seconds (YES in S130), ECU 300 determines that there is a possibility of a long-time power failure, etc., and shuts off the CCID relay (not connected) to stop the system. The pilot signal CPLT is controlled so as to control the voltage (S140), and the SMR 115 and CHR 180 are shut off to stop the charging operation (S170).

  If charging connector 410 is not connected in S120 (NO in S120), the process proceeds to S120, and ECU 300 controls the voltage of pilot signal CPLT so as to cut off the CCID relay. At this time, SMR 115 and CHR 180 are maintained in the connected state. However, in this case, since the charging cable 400 is disconnected from the vehicle 100, the CCID relay is not actually controlled by the ECU 300.

  Thereafter, in S160, ECU 300 determines whether or not the state where charge connector 410 is disconnected continues for γ seconds (α> γ).

  If continuation time in the state where charge connector 410 is disconnected has not reached γ seconds (NO in S160), the process returns to S100 to maintain SMR 115 and CHR 180 connected. For example, when the user accidentally disconnects the charging cable 400 and then the charging cable 400 is reconnected in a short time, the charging operation can be automatically resumed after the reconnection. Because.

  On the other hand, when charging connector 410 is disconnected for γ seconds (YES in S160), ECU 300 determines that charging connector 410 is likely to be disconnected to stop charging, and SMR 115 and The CHR 180 is shut off and the charging operation is stopped (S170).

  If charging cable 400 is reconnected for γ seconds and the restriction on charging power is released (NO in S110), the charging operation in which the CCID relay is connected is resumed in S115. Here, time γ for maintaining SMR 115 and CHR 180 in the connected state at this time is set to about 1 second, for example.

  In S100, when external charging is being performed at a place other than the multilevel parking lot (NO in S100), the process proceeds to S180, and ECU 300 determines whether or not the supplied charging power is limited. judge. The determination method in S180 can use the same method as in S110 described above.

  If charging power is not restricted (NO in S180), the process proceeds to S185, and ECU 300 continues the charging operation. Thereafter, the process returns to S100.

  If charging power is restricted (YES in S180), the process proceeds to S190, and ECU 300 shuts off the CCID relay. Then, in S200, ECU 300 determines whether or not charging connector 410 is connected to inlet 175.

  If charging connector 410 is being connected (YES in S200), the process proceeds to S210, and ECU 300 determines whether or not the state where charging power is limited continues for β seconds (α> β> γ). Determine. This is to prevent charging from being stopped without the user's knowledge when a temporary voltage fluctuation on the power source side or an instantaneous power failure occurs, and the period β used for determination is, for example, It is set to about 8 to 10 seconds.

  If the duration of the state where charging power is limited has not reached β seconds (NO in S210), the process returns to S100, and ECU 300 keeps SMR 115, CHR 180, and the CCID relay in a connected state. The charging operation is interrupted. In this state, when the restriction on charging power is released (NO in S180), the charging operation is restarted in S185.

  On the other hand, when the state where the charging power is limited continues for β seconds (YES in S210), the process proceeds to S170, and ECU 300 shuts off SMR 115 and CHR 180 and stops the charging operation.

  By controlling according to the above processing, in a multi-story parking lot that can be externally charged during parking, when charging power is limited with the entering and exiting operation of other vehicles during charging, While the loading / unloading operation of another vehicle is being performed, the relay provided in the power transmission path from the power transmission device to the power storage device can be maintained in the connected state. As a result, the deterioration of the relay is promoted due to frequent operation of the relay, thereby suppressing the life of the relay from being shortened.

  In addition, in the above, when entering / exiting a plurality of vehicles is performed continuously, the state where the charging operation is interrupted may be continued for a long period of time. In such a case, the system remains in the activated state, and the respective relays and other auxiliary machines remain driven. If it does so, there exists a possibility that the electric power of the auxiliary battery for supplying electric power to these apparatuses may continue to be consumed.

  Therefore, in the case where a plurality of vehicles are continuously loaded and unloaded in this way, in the system on the multistory parking lot side, the restriction on the charging power is temporarily canceled during the loading and unloading of the continuous vehicles. It is preferable that power consumption by the auxiliary machine can be compensated.

  In the above description, the case where power is transmitted from the external power source to the vehicle using the charging cable has been described as an example. However, the present embodiment also applies to the case where power is transmitted from the external power source to the vehicle without contact. It is possible to apply the method shown in.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10 parking structures, 20 power supply units, 30 drive units, 40, 220 power sources, 50 pallets, 100, 100-1, 100-2, 100-3 vehicles, 110 power storage devices, 115 SMR, 120 PCUs, 121 converters 122 123 Inverter, 130, 135 Motor generator, 140 Power transmission gear, 150 Drive wheel, 160 Engine, 170 Power converter, 175 Inlet, 180 CHR, 190, 230 Communication device, 200, 200-1, 200-2, 200-3, 200A power transmission device, 210 outlet, 240, 440 CCID, 300 ECU, 310 mode selection unit, 320 determination unit, 330 relay control unit, 340 charge control unit, 400, 400-1, 400-2, 400- 3,400A charging cable, 410 charging connector, 420 plug, 430 electric wire part, ACL1, ACL2, PL1-PL3, NL1, NL3 power line, C1, C2 capacitor.

Claims (12)

A vehicle capable of external charging for charging a power storage device mounted using electric power from an external power source,
A power receiving unit that receives power from the external power source;
A relay that is provided in a power transmission path from the power reception unit to the power storage device, and switches between supply and interruption of power to the power storage device;
A control device for controlling the relay,
The control device is capable of supplying power for external charging during parking, and performing external charging in a parking lot where power for external charging is restricted when entering or leaving other vehicles. A vehicle that maintains the relay in a connected state when the supplied power is restricted in accordance with entry / exit of another vehicle.   The vehicle according to claim 1, wherein the control device maintains the relay in a connected state until a predetermined first period elapses after electric power supplied from the parking lot is limited. The control device has a function of maintaining the relay in a connected state for a second period in response to a stop of power supply during external charging when external charging is performed outside the parking lot. Have
The vehicle according to claim 2, wherein the first period is set longer than the second period.   The vehicle according to claim 2, wherein the first period is determined based on a time required for an entry / exit operation in the parking lot. The control device receives information indicating that another vehicle is entering and leaving the parking lot,
The vehicle according to claim 2, wherein the control device does not count the elapsed time of the first period when the information is received. The control device receives information indicating that another vehicle is entering and leaving the parking lot,
The vehicle according to claim 1, wherein the control device maintains the relay in a connected state while another vehicle is entering / exiting based on the information.   The control device responds to the fact that, when external charging is performed in the parking lot in a state set by the user in a predetermined mode, the supplied power is limited with the entry / exit of other vehicles. The vehicle according to claim 1, wherein the relay is maintained in a connected state. The vehicle receives power from the external power source via a charging cable connected to the power receiving unit,
The charging cable is provided in a power transmission path from the external power source to the power receiving unit, and includes another relay that switches between supply and interruption of power to the vehicle,
The control device is capable of switching the other relay,
The control device, when external charging is performed in the parking lot, maintains the other relays in a connected state when the supplied power is limited in accordance with entry / exit of other vehicles. Item 4. The vehicle according to Item 1.   The parking lot is a three-dimensional parking lot capable of accommodating a plurality of vehicles, and driving power for driving the parking lot and supply power for external charging are supplied from the same power source. Vehicle described in.   In the parking lot, when entering and exiting other vehicles is performed continuously, after the entrance and exit operation is completed and supplying electric power for external charging for a predetermined period, the next entrance and exit operation is performed. The vehicle according to claim 1, which starts. A vehicle control method capable of external charging that charges an electric storage device mounted using electric power from an external power source,
The vehicle is
A power receiving unit that receives power from the external power source;
Provided in a power transmission path from the power reception unit to the power storage device, including a relay that switches between supply and interruption of power to the power storage device,
The control method is:
When external charging is performed in a parking lot where power can be supplied for external charging during parking and power for external charging is restricted when entering and leaving other vehicles. Detecting that the supplied power of the vehicle is limited as a result of entering and leaving other vehicles;
And maintaining the relay in a connected state when the supplied power is limited. A vehicle capable of external charging for charging a power storage device mounted using electric power from an external power source,
A power receiving unit that receives power from the external power source;
A relay that is provided in a power transmission path from the power reception unit to the power storage device, and switches between supply and interruption of power to the power storage device;
A control device for controlling the relay,
When the power supplied from the external power source is limited, the control device maintains the relay in a connected state for a predetermined period after the power is limited,
The control device is capable of supplying electric power for external charging during parking, and when performing external charging in a parking lot where electric power for external charging is restricted when entering and leaving other vehicles. A vehicle in which the predetermined period is set longer than when external charging is performed outside the parking lot.

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