JP2016054604A - vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle capable of securing a suitable operation of each driving mechanism while improving convenience at the time of feeding power to an external power feeder.SOLUTION: A vehicle 10 includes two driving mechanisms 100, 200, a power feeding connector 440, and a switching part 420. A first driving mechanism 100 includes a fuel cell device 110 for generating electric power on the basis of fuel gas stored in a fuel tank 111, and a motor generator 150 for generating power necessary for vehicle travelling on the basis of electric power generated by the fuel cell device 110. Also, the first driving mechanism 100 performs a power feed to an external power feeder 20 by using electric power generated by the fuel cell device 110. A second driving mechanism 200 has the same configuration as the first driving mechanism 100. The switching part 420, on the basis of a comparison of residual fuel amount of each driving mechanism 100, 200, selects which of two driving mechanisms 100, 200 is electrically connected to the power feeding connector 440.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle capable of supplying power to an external power feeder.

  As a power generation unit that generates power necessary for vehicle travel, a hybrid vehicle in which an engine and an electric motor are mounted and an electric vehicle in which only the electric motor is mounted are known. In recent years, some vehicles of this type can supply power to an external power supply outside the vehicle (see, for example, Patent Document 1). The vehicle described in Patent Document 1 includes a power feeding connector that can be connected to an external power feeder, and external power feeding from the vehicle to the external power feeder is performed by connecting the external power feeder to the power feeding connector via a cable. Is possible.

JP 2013-123313 A

  By the way, when a hybrid vehicle or an electric vehicle is applied to a large vehicle such as a bus, for example, two sets of drive mechanisms (banks) composed of an engine and an electric motor are mounted because the power required for traveling the vehicle increases. Can be considered. According to such a configuration, since the power transmitted to the drive wheels is increased, it is possible to travel a large vehicle.

  However, when external power supply is performed in a vehicle equipped with two sets of drive mechanisms, if a power supply connector is provided for each drive mechanism, the user must select which of the two sets of drive mechanisms is used for external power supply. Therefore, convenience may be deteriorated. On the other hand, in order to solve this problem, when the power supply paths of the two sets of drive mechanisms are connected to one power supply connector, the two sets of drive mechanisms are electrically connected. In this case, when power is exchanged between the two sets of drive mechanisms, the power control of each drive mechanism is affected, and as a result, the operation of each drive mechanism may be hindered. Further, when an abnormality such as a decrease in insulation resistance or leakage occurs in one of the two sets of drive mechanisms, it is difficult to specify which drive mechanism is abnormal. This also becomes a factor that hinders the operation of each drive mechanism as a result.

  The present invention has been made in view of such circumstances, and its purpose is to improve the convenience of feeding power to an external power feeder even when a plurality of drive mechanisms are mounted, and to improve the convenience of each drive mechanism. An object of the present invention is to provide a vehicle capable of ensuring proper operation.

  In order to solve the above problem, in a vehicle capable of supplying power to the external power feeder (20), power necessary for vehicle travel is generated from a power source, and the power source is used to generate the external power. A plurality of drive mechanisms (100, 200) for supplying power to the power feeder, a power feed connector (440) connectable to the external power feeder, electrical connection between each drive mechanism and the power feed connector, and A switching unit (420) capable of shutting off, wherein the switching unit electrically connects any of the plurality of driving mechanisms to the power feeding connector based on a remaining amount of a power source of each driving mechanism. We decided to choose.

  According to the present invention, when power is supplied to the external power feeder, only one of the plurality of drive mechanisms is electrically connected to the power supply connector, so that the plurality of drive mechanisms are electrically connected to each other. It will not be done. Thereby, since each drive mechanism can operate | move electrically independently, the appropriate operation | movement of each drive mechanism is securable. Further, since the switching unit selects the power supply source drive mechanism based on the remaining amount of the power source of each drive mechanism, the user does not need to select the power supply source drive mechanism. Therefore, user convenience can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the appropriate operation | movement of each drive mechanism can be ensured, improving the convenience at the time of the electric power feeding to an external electric power feeder.

The block diagram which shows the schematic structure about one Embodiment of a vehicle. The circuit diagram which shows the electrical structure of the electrical storage apparatus and electric power feeding part about the vehicle of embodiment. The flowchart which shows a part of procedure of the process performed by the switching part about the vehicle of embodiment. The flowchart which shows a part of procedure of the process performed by the switching part about the vehicle of embodiment.

  Hereinafter, an embodiment of the vehicle will be described.

  As illustrated in FIG. 1, the vehicle 10 according to the present embodiment includes, for example, a large bus, and includes a first drive mechanism 100, a second drive mechanism 200, a power transmission mechanism 300, and a power feeding unit 400. The power transmission mechanism 300 transmits the power generated by the first drive mechanism 100 and the second drive mechanism 200 to the left and right drive wheels 11 and 12 of the vehicle. That is, the vehicle 10 travels based on the power generated by the first drive mechanism 100 and the second drive mechanism 200.

  The first drive mechanism 100 includes a fuel cell device 110, a power storage device 120, a fuel gauge 130, an inverter 140, a motor generator 150, and a drive ECU (electronic control device) 160.

  The fuel cell device 110 includes a fuel tank 111, a fuel cell stack 112, and a converter 113. The fuel tank 111 stores gas fuel as a power source such as hydrogen in a high pressure state. The fuel tank 111 depressurizes the stored gas fuel and supplies it to the fuel cell stack 112. The fuel cell stack 112 generates power by a chemical reaction between gas fuel supplied from the fuel tank 111 and air supplied from a blower (not shown). The converter 113 boosts the DC power generated by the fuel cell stack 112 to a voltage suitable for the supply of the inverter 140 and applies it to the inverter 140.

  The fuel gauge 130 detects the remaining amount Fr1 of the gas fuel stored in the fuel tank 111, and outputs the detected remaining amount Fr1 of the gas fuel to the drive ECU 160.

  Power storage device 120 includes a battery 121, an intermittent circuit 122, and a converter 123.

  As shown in FIG. 2, a high potential side wiring 124 and a low potential side wiring 125 are connected to the high potential side terminal and the low potential side terminal of the battery 121, respectively. The high potential side wiring 124 and the low potential side wiring 125 are connected to the converter 123 via the intermittent circuit 122. A precharge resistor R is connected in parallel to the low potential side wiring 125. A smoothing capacitor C is connected between the high potential side wiring 124 and the low potential side wiring 125.

  The intermittent circuit 122 includes a first relay 122a for intermittently connecting the high potential side wiring 124, a second relay 122b for intermittently connecting the low potential side wiring 125, and a precharge relay 122c connected in series to the precharge resistor R. The The intermittent circuit 122 intermittently connects the power supply path between the battery 121 and the converter 123 by switching on / off states of the relays 122a, 122b, and 122c.

  The converter 123 boosts the voltage of the battery 121 to a voltage suitable for the supply of the inverter 140 and applies it to the inverter 140.

  As shown in FIG. 1, inverter 140 drives motor generator 150 by converting DC power supplied from fuel cell device 110 or power storage device 120 into three-phase AC power and supplying it to motor generator 150. Inverter 140 also converts regenerative power (three-phase AC power) from motor generator 150 into DC power and supplies it to converter 123. At this time, converter 123 steps down the DC power supplied from inverter 140 to a voltage suitable for supply to battery 121 and supplies the voltage to battery 121. Thereby, the battery 121 is charged.

  The drive ECU 160 controls the DC power supplied from the fuel cell device 110 to the inverter 140 by controlling the drive of the fuel cell stack 112 and the converter 113. In addition, drive ECU 160 controls DC power supplied from power storage device 120 to inverter 140 by controlling driving of intermittent circuit 122 and converter 123. Further, drive ECU 160 controls the drive of inverter 140 to control the voltage supplied to motor generator 150 by PWM (pulse width modulation). Drive ECU 160 controls drive of motor generator 150 through this PWM control.

  The second drive mechanism 200 has the same configuration as the first drive mechanism 100. That is, the second drive mechanism 200 includes a fuel cell device 210, a power storage device 220, a fuel gauge 230, an inverter 240, a motor generator 250, and a drive ECU 260, similarly to the first drive mechanism 100. The fuel cell device 210 includes a fuel tank 211, a fuel cell stack 212, and a converter 213. In addition, the power storage device 220 includes a battery 221, an intermittent circuit 222, and a converter 223. Since the structure and operation of these elements of the second drive mechanism 200 are the same as the structure and operation of each element of the first drive mechanism 100, their description is omitted.

  The power transmission mechanism 300 includes a gear 301, a propeller shaft 302, and a differential gear 303. The gear 301 is connected to the output shaft 151 of the motor generator 150 of the first drive mechanism 100 and the output shaft 251 of the motor generator 250 of the second drive mechanism 200. The gear 301 rotates the propeller shaft 302 by transmitting the rotation of the output shafts 151 and 251 of the motor generators 150 and 250 to the propeller shaft 302. The differential gear 303 rotates the drive shafts 13 and 14 by transmitting the rotation of the propeller shaft 302 to the left and right drive shafts 13 and 14 of the vehicle. Due to the rotation of the drive shafts 13 and 14, the drive wheels 11 and 12 connected to their tips are rotated, and the vehicle 10 travels.

  The power feeding unit 400 supplies power generated by the fuel cell devices 110 and 210 of the drive mechanisms 100 and 200 to the external power feeder 20. The power supply unit 400 includes a power supply switch 410, a switching unit 420, a current sensor 430, and a power supply connector 440.

  The power supply switch 410 is a switch operated by a user when permitting power supply from the vehicle 10 to the external power supply 20. When the power supply switch 410 detects the ON operation, the power supply switch 410 outputs that fact to the switching unit 420.

  As shown in FIG. 2, the high potential side wiring 441 of the power feeding connector 440 is connected to the connection point P <b> 1 of the first wiring 461. The first wiring 461 is electrically connected to the high potential side wiring 124 of the battery 121 of the first drive mechanism 100 and the high potential side wiring (not shown) of the battery 221 of the second drive mechanism 200. Further, the low potential side wiring 442 of the power supply connector 440 is connected to the connection point P <b> 2 of the second wiring 462. The second wiring 462 is electrically connected to the low potential side wiring 125 of the battery 121 of the first drive mechanism 100 and the low potential side wiring (not shown) of the battery 221 of the second drive mechanism 200.

  The external power feeder 20 includes a power feeding cable 21 that can be connected to the power feeding connector 440 of the vehicle 10 and a power feeding switch 22 that is operated by a user. When the power feeding switch 22 is turned on with the power feeding cable 21 connected to the power feeding connector 440, the external power feeder 20 captures power from the vehicle 10 and supplies the captured power to a power supply target 23 such as a general house. To do. In addition, when the power feeding cable 21 is connected to the power feeding connector 440 of the vehicle 10, communication is possible between the external power feeder 20 and the switching unit 420 via a communication line (not shown). For example, when the external power supply 20 detects an ON operation of the power supply switch 22, the external power supply 20 transmits a message to that effect to the switching unit 420.

  In the vehicle 10, power is supplied to the external power feeder 20 by driving the fuel cell devices 110 and 210 of the drive mechanisms 100 and 200. For example, when the fuel cell device 110 of the first drive mechanism 100 is driven, the power generated by the fuel cell device 110 is stepped down by the converter 123 of the power storage device 120, and then the first wiring 461 and the second wiring The power is transmitted to the power feeding connector 440 via the 462 and supplied to the external power feeder 20. In addition, when the fuel cell device 210 of the second drive mechanism 200 is driven, the power generated by the fuel cell device 210 is stepped down by the converter 223 of the power storage device 220, and then the first wiring 461 and the second wiring 261. The electric power is transmitted to the power supply connector 440 through the wiring 462 and supplied to the external power supply 20.

  As shown in FIG. 2, the current sensor 430 is disposed on the high potential side wiring 441 of the power supply connector 440. The current sensor 430 detects a current flowing from the connection point P1 of the first wiring 461 to the power feeding connector 440, in other words, an external supply current I flowing from the power feeding connector 440 to the external power feeder 20. The current sensor 430 outputs the detected external supply current I to the switching unit 420.

  The switching unit 420 includes two relays 421 and 423 arranged in series across the connection point P1 in the first wiring 461, and two relays 422 arranged in series across the connection point P2 in the second wiring 462. 424 and power supply ECU 425 as a control unit. Hereinafter, for convenience, the pair of relays 421 and 422 are referred to as “first relays”, and the pair of relays 423 and 424 are referred to as “second relays”. For example, the switching unit 420 turns on both the first relays 421 and 422 and turns off both the second relays 423 and 424 to electrically connect the first drive mechanism 100 to the power supply connector 440, and The electrical connection between the drive mechanism 200 and the power feeding connector 440 is cut off. That is, only external power feeding by the first drive mechanism 100 is permitted. Further, the switching unit 420 turns off both the first relays 421 and 422 and turns off the second relays 423 and 424 to electrically connect the second drive mechanism 200 to the power supply connector 440 and The electrical connection between the drive mechanism 100 and the power supply connector 440 is cut off. That is, only external power feeding by the second drive mechanism 200 is permitted.

  The power feeding ECU 425 performs various communications with the drive ECUs 160 and 260 of the drive mechanisms 100 and 200 and the external power feeder 20. For example, the power feeding ECU 425 transmits a power feeding start command and a power feeding stop command to each of the drive ECUs 160 and 260 and the external power feeder 20. When the drive ECU 160 of the first drive mechanism 100 receives the power supply start command, the drive ECU 160 drives the fuel cell device 110 to generate electric power for external power supply. Further, when the drive ECU 160 receives the power supply stop command, the drive ECU 160 stops the fuel cell device 110. This operation is the same in the drive ECU 260 of the second drive mechanism 200. On the other hand, the external power feeder 20 starts power feeding to the power feeding target 23 when receiving a power feeding start command. Further, the external power feeder 20 stops power feeding to the power feeding target 23 when receiving a power feeding stop command.

  Further, the power feeding ECU 425 acquires information on the remaining fuel amounts Fr1 and Fr2 of the fuel tanks 111 and 211 of the drive mechanisms 100 and 200 based on communication with the drive ECUs 160 and 260. Hereinafter, for the sake of convenience, the remaining fuel amount Fr1 of the fuel tank 111 of the first drive mechanism 100 is referred to as “first fuel remaining amount”, and the remaining fuel amount Fr2 of the fuel tank 211 of the second drive mechanism 200 is referred to as “second fuel”. This is referred to as “remaining amount”. The power supply ECU 425 determines the amount of power that can be supplied by the first drive mechanism 100 based on the first remaining fuel amount Fr1, and determines the amount of power that can be supplied by the second drive mechanism 200 based on the second remaining fuel amount Fr2. . Then, the power feeding ECU 425 turns on / off the relays 421, 422, 423, and 424 based on the comparison between the first fuel remaining amount Fr1 and the second fuel remaining amount Fr2, and thereby the two driving mechanisms 100 and 200 Either one is electrically connected to the power supply connector 440. Next, with reference to FIGS. 3 and 4, processing executed by the power feeding ECU 425 will be described together with an operation example of the power feeding ECU 425. The power feeding ECU 425 repeatedly executes the processes shown in FIGS. 3 and 4 at a predetermined cycle. Further, when the power supply ECU 425 starts this process, all the relays 421 to 424 are in an off state.

  As shown in FIG. 3, the power supply ECU 425 first determines whether or not there is a power supply start request to the external power supply 20 (step S1). The power supply ECU 425 determines that there is a power supply start request to the external power supply 20 when the external power supply 20 is notified of the operation of turning on the power supply switch 22 and detects the operation of the power supply switch 410 of the vehicle 10. (Step S1: YES). In this case, the power supply ECU 425 determines whether or not the first fuel remaining amount Fr1 is greater than or equal to the second fuel remaining amount Fr2 (step S2). Here, when the first fuel remaining amount Fr1 is equal to or greater than the second fuel remaining amount Fr2 (step S2: YES), the power supply ECU 425 turns on both the first relays 421 and 422 (step S3). As a result, power can be supplied from the first drive mechanism 100 to the external power feeder 20. Then, the power supply ECU 425 starts power supply from the first drive mechanism 100 to the external power supply 20 by transmitting a power supply start command to the drive ECU 160 of the first drive mechanism 100 and the external power supply 20, respectively (step S4). .

  And after external electric power feeding by the 1st drive mechanism 100 is started, electric power feeding ECU425 performs the process shown in FIG. That is, the power supply ECU 425 monitors whether or not the first fuel remaining amount Fr1 is equal to or greater than the second fuel remaining amount Fr2 (step S7). In addition, when the first fuel remaining amount Fr1 is greater than or equal to the second fuel remaining amount Fr2 (step S7: YES), the power supply ECU 425 determines whether both of the second relays 423 and 424 are on (step S8). . That is, the power supply ECU 425 determines whether or not the external power supply by the second drive mechanism 200 is performed. Here, immediately after the external power supply by the first drive mechanism 100 is started, the first remaining fuel amount Fr1 is equal to or greater than the second remaining fuel amount Fr2 (step S7: YES), and the second relays 423 and 424 are turned on. Since both are off (step S8: NO), the power supply ECU 425 next determines whether or not an external power supply termination request has been made (step S14). Specifically, the power supply ECU 425 has received an external power supply termination request when an off operation of the power supply switch 22 is notified from the external power supply 20 or when an off operation of the power supply switch 410 of the vehicle 10 is detected. Judgment is made (step S14: YES). If there is no external power supply termination request (step S14: NO), the power supply ECU 425 continues monitoring whether the first fuel remaining amount Fr1 is equal to or greater than the second fuel remaining amount Fr2 (step S7).

  Thereafter, when the external power supply by the first drive mechanism 100 is continued, the first remaining fuel amount Fr1 decreases. When the first remaining fuel amount Fr1 becomes less than the second remaining fuel amount Fr2 (step S7: NO), the power supply ECU 425 determines whether or not both of the first relays 421 and 422 are on (step S15). . That is, the power supply ECU 425 determines whether or not external power supply is being performed by the first drive mechanism 100. At this time, since both the first relays 421 and 422 are on (step S15: YES), the power supply ECU 425 next determines whether or not the external supply current I detected by the current sensor 430 is zero. (Step S16). The power supply ECU 425 determines whether the external supply current I is zero when the external supply current I is not zero (step S16: NO), that is, when the power supply to the power supply target 23 by the external power supply 20 is continued. Monitoring of whether or not is continued (step S16). Then, when the external supply current I becomes zero (step S16: YES), that is, when the power supply to the power supply target 23 by the external power supply 20 is stopped, the power supply ECU 425 and the drive ECU 160 of the first drive mechanism 100 and By notifying the external power supply 20 of a power supply stop command, external power supply by the first drive mechanism 100 is interrupted (step S17). Subsequently, the power feeding ECU 425 turns off both the first relays 421 and 422 (step S18) and turns on both the second relays 423 and 424 (step S19). As a result, power can be supplied from the second drive mechanism 200 to the external power feeder 20. Then, the power feeding ECU 425 starts power feeding from the second drive mechanism 200 to the external power feeder 20 by transmitting a power feeding start command to the drive ECU 260 of the second drive mechanism 200 and the external power feeder 20 (step S20).

  Thereafter, when there is no external power supply termination request (step S14: NO) and the external power supply by the second drive mechanism 200 is continued, the second remaining fuel amount Fr2 decreases. When the first fuel remaining amount Fr1 becomes equal to or greater than the second fuel remaining amount Fr2 (step S7: YES), the power supply ECU 425 determines whether or not both of the second relays 423 and 424 are on (step S8). . That is, the power supply ECU 425 determines whether or not the external power supply by the second drive mechanism 200 is performed. At this time, since the second relays 423 and 424 are both on (step S8: YES), the power supply ECU 425 determines whether or not the external supply current I detected by the current sensor 430 is zero (step S8). S9). The power supply ECU 425 determines whether the external supply current I is zero when the external supply current I is not zero (step S9: NO), that is, when the power supply to the power supply target 23 by the external power supply 20 is continued. Monitoring of whether or not is continued (step S9). When the external supply current I becomes zero (step S9: YES), that is, when the power supply from the external power supply 20 to the power supply target 23 is stopped, the power supply ECU 425 drives the second drive mechanism 200. By notifying the ECU 260 and the external power supply 20 of a power supply stop command, external power supply by the second drive mechanism 200 is interrupted (step S10). Next, the power supply ECU 425 turns off both the second relays 423 and 424 (step S11) and turns on both the first relays 421 and 422 (step S12). As a result, power can be supplied from the first drive mechanism 100 to the external power feeder 20. Then, the power supply ECU 425 starts power supply from the first drive mechanism 100 to the external power supply 20 by transmitting a power supply start command to the drive ECU 160 of the first drive mechanism 100 and the external power supply 20 (step S13).

  Thereafter, the power supply ECU 425 continues the processing of steps S7 to S20 during a period when there is no external power supply termination request (step S14: NO). When there is an external power supply termination request (step S14: YES), the power supply ECU 425 transmits a power supply start command to the drive ECUs 160 and 260 of the drive mechanisms 100 and 200, whereby the first drive mechanism 100 and External power feeding by the second drive mechanism 200 is stopped (step S21). In addition, the power supply ECU 425 turns off all the relays 421 to 424 (step S22), and ends a series of processes.

  As shown in FIG. 3, when there is a power supply start request to the external power feeder 20 (step S1: YES), the power supply ECU 425 has the first remaining fuel amount Fr1 less than the second remaining fuel amount Fr2. In that case (step S2: NO), both the second relays 423 and 424 are turned on (step S5). Then, the power feeding ECU 425 starts power feeding from the second drive mechanism 200 to the external power feeder 20 by transmitting a power feeding start command to the drive ECU 260 of the second drive mechanism 200 and the external power feeder 20 (step S6). The processes after step S7 shown in FIG.

  As shown in FIG. 3, when there is no power supply start request to the external power feeder 20 (step S1: NO), the power supply ECU 425 turns off all the relays 421 to 424 as shown in FIG. After (step S22), a series of processing is terminated.

  According to such a structure, the effect | action and effect shown to the following (1)-(4) can be acquired.

  (1) When power is supplied to the external power feeder 20, only one of the two drive mechanisms 100 and 200 is electrically connected to the power supply connector 440 by the switching unit 420. The two drive mechanisms 200 are not electrically connected to each other. Thereby, since each drive mechanism 100,200 can operate | move electrically independently, the appropriate operation | movement of each drive mechanism 100,200 is securable. Further, since the switching unit 420 selects which of the two drive mechanisms 100 and 200 is connected to the power supply connector 440 based on the comparison between the first fuel remaining amount Fr1 and the second fuel remaining amount Fr2, the user can select the power supply source. There is no need to select a drive mechanism. Therefore, user convenience can be improved.

  (2) When the power supply to the external power feeder 20 is started, the switching unit 420 compares the first remaining fuel amount Fr1 and the second remaining fuel amount Fr2, and electrically connects the drive mechanism having a large remaining fuel amount to the feeding connector 440. Connect. As a result, the time during which power can be supplied to the external power feeder 20 can be maximized without switching the drive mechanism of the power supply source, so that stable power supply to the external power feeder 20 can be realized.

  (3) When external power feeding is continued with only one of the two drive mechanisms 100, 200, gas fuel may be reduced only with that drive mechanism, and there is a possibility that the power required for vehicle travel cannot be generated. is there. In this case, since the vehicle has to be traveled by only one drive mechanism capable of generating power, the power for traveling the vehicle is insufficient, which may hinder vehicle travel. In this regard, in the vehicle 10 of the present embodiment, the switching unit 420 switches the connection destination of the power supply connector 440 to a drive mechanism with a large amount of remaining fuel, so that a drive mechanism with a large amount of remaining fuel preferentially supplies external power. As a result, it is possible to balance the remaining amount of fuel in each of the drive mechanisms 100 and 200, so that it becomes easy to maintain a state in which power can be generated by all the drive mechanisms, and better vehicle travel can be ensured. it can. Moreover, since the power supply source drive mechanism is switched on condition that the power supply from the external power supply 20 to the power supply target 23 is stopped, the burnout of the relays 421 to 424 of the switching unit 420 can be suppressed.

  (4) The switching unit 420 detects the external supply current I flowing from the power supply connector 440 to the external power supply 20 by the current sensor 430, and the external power supply 20 is supplied with power 23 when the external supply current I becomes zero. It was decided that the power supply to was stopped. Thereby, it is possible to easily determine whether or not the external power feeder 20 has stopped power feeding to the power feeding target 23.

  In addition, the said embodiment can also be implemented with the following forms.

  The structure of the switching unit 420 can be changed as appropriate. For example, instead of the relays 421 to 424, a bipolar transistor, a field effect transistor (FET), or the like may be used.

  In the processing shown in FIGS. 3 and 4, the processing in steps S7 to S20 may be excluded. That is, the power supply ECU 425 may perform only the process of electrically connecting the drive mechanism having a large amount of remaining fuel to the power supply connector 440 when starting the power supply to the external power supply 20. Even with this configuration, it is possible to obtain the effect shown in (2) above.

  The first drive mechanism 100 includes, for example, an internal combustion engine that generates power necessary for vehicle travel using gasoline as a power source, and a generator that generates electric power that can be supplied to the external power feeder 20 using the power of the internal combustion engine. It may have. In this case, the first drive mechanism 100 is provided with a fuel gauge that detects the remaining amount of gasoline. Further, the second drive mechanism 200 may adopt the same configuration. In this case, the switching unit 420 may perform the processes shown in FIGS. 3 and 4 based on the remaining amount of gasoline that can be supplied to the internal combustion engines of the drive mechanisms 100 and 200.

  The first drive mechanism 100 has, for example, a motor that generates power necessary for vehicle travel using power supplied from a battery as a power source, and supplies power to the external power supply 20 based on the power charged in the battery. It may be a thing. Further, the second drive mechanism 200 may adopt the same configuration. In this case, the switching unit 420 may perform the processes shown in FIGS. 3 and 4 based on the remaining battery levels of the batteries 121 and 221 of the drive mechanisms 100 and 200.

  The vehicle 10 is not limited to a structure including the two drive mechanisms 100 and 200, and may have a structure including three or more drive mechanisms. In this case, the switching unit 420 compares the remaining amount of fuel in each drive mechanism when starting to supply power to the external power feeder 20, and electrically connects the drive mechanism having the largest remaining fuel amount to the power supply connector 440. Good. In addition, the switching unit 420 stops the power supply to the power supply target 23 when there is another drive mechanism that has more fuel than the drive mechanism that is currently supplying power to the external power supply 20. On the condition that this is done, the connection destination of the power supply connector 440 may be switched to a drive mechanism having the largest amount of remaining fuel.

  The switching unit 420 is not limited to one that electrically connects a drive mechanism with a large amount of remaining fuel to the power supply connector 440. In short, the switching unit 420 only needs to select which of the two drive mechanisms 100 and 200 is connected to the power supply connector 440 based on the remaining fuel amounts Fr1 and Fr2 of the drive mechanisms 100 and 200.

  -This invention is not limited to said specific example. That is, the above-described specific examples that are appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, and can be changed as appropriate. Moreover, each element with which embodiment mentioned above is provided can be combined as long as it is technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

10: Vehicle 20: External power supply 23: Power supply target 100, 200: Drive mechanism 420: Switching unit 421, 422, 423, 424: Relay 425: Power supply ECU (control unit)
430: Current sensor 440: Power supply connector

Claims (5)

A vehicle capable of supplying power to an external power supply (20),
A plurality of drive mechanisms (100, 200) for generating power necessary for vehicle travel from a power source and supplying power to the external power feeder using the power source;
A power supply connector (440) connectable to the external power supply;
A switching unit (420) capable of performing electrical connection between each drive mechanism and the power feeding connector and blocking the connection;
The vehicle, wherein the switching unit selects which of the plurality of drive mechanisms is electrically connected to the power supply connector based on a remaining amount of a power source of each drive mechanism.   The switching unit compares the power source remaining amount of each drive mechanism when starting to supply power to the external power supply, and electrically connects the drive mechanism having the largest power source remaining amount to the power supply connector. The vehicle according to claim 1.   The switching unit stops the power supply to the power supply target when there is another drive mechanism with a larger amount of remaining power source than the drive mechanism that is currently supplying power to the external power supply. The vehicle according to claim 2, wherein the connection destination of the power supply connector is switched to a drive mechanism with a large remaining amount of the power source on the condition. A current sensor (430) for detecting an external supply current flowing from the power supply connector to the external power supply;
The vehicle according to claim 3, wherein the switching unit determines that the external power feeder has stopped feeding power to the power supply target when the external supply current becomes zero. The switching unit is
Relays (421, 422, 423, 424) for interrupting electrical connection between each drive mechanism and the power supply connector;
The vehicle according to claim 1, further comprising: a control unit (425) configured to drive the relay on / off.

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