JP7497697B2 - Power Supply System - Google Patents

Description

This disclosure relates to a power supply system.

There is a known power supply system that transmits and supplies power to a vehicle equipped with a power receiving device. Patent Document 1 discloses a charger that limits the output power when the temperature of the charger reaches or exceeds a predetermined value. This allows charging to continue while suppressing the charger's temperature rise.

JP 2012-29386 A

However, limiting the output power can result in a longer time required to charge the vehicle's battery. Therefore, technology that can shorten the charging time of a vehicle is desirable.

According to one embodiment of the present disclosure, there is provided a power supply system (100) that supplies power to a power receiving device (210) mounted on a vehicle (200). The power supply system includes a power transmission system (110) having a plurality of power supply devices (111) each capable of supplying power to the power receiving device, and a vehicle control device (290) that performs automatic driving of the vehicle. The power transmission system performs a limit control to limit the supply of power to the power receiving device when a predetermined first condition is satisfied, and the vehicle control device moves the vehicle to a position where the vehicle receives power from another power supply device of the plurality of power supply devices that does not include the part of the power supply device that has been supplying power to the vehicle when a predetermined second condition related to the limit control of the power transmission system is satisfied in a case where two or more power supply devices, including a first power supply device that is a part of the plurality of power supply devices and has been supplying power to the vehicle among the plurality of power supply devices, are simultaneously supplying power to the vehicle .

According to this form of power supply system, for example, by setting the second condition to be that the power supply system is implementing limit control or has the potential to implement limit control, the vehicle control device can suppress the power supply device that is implementing limit control or has the potential to implement limit control from continuing to supply power to the vehicle. This makes it possible to avoid a reduction in the amount of power per unit time supplied to the vehicle. As a result, the charging time for the vehicle can be shortened.

FIG. 1 is an explanatory diagram showing an outline of a configuration of a power supply system. 11 is a flowchart showing an example of a power supply process. 4 is a flowchart showing an example of a charging process. 13 is a flowchart showing an example of a power supply process in the fifth embodiment. FIG. 23 is an explanatory diagram showing an outline of the configuration of a power supply system according to a seventh embodiment. 11 is a flowchart illustrating an example of a power supply device notification process.

A. First embodiment:
1, the power supply system 100 is a system capable of supplying electric power from a power supply device 111 to a vehicle 200 equipped with a power receiving device 210. The vehicle 200 is configured as, for example, an electric vehicle or a hybrid vehicle. The power supply system 100 includes a power transmission system 110 installed on a road RS, and the vehicle 200.

The power transmission system 110 includes a plurality of power supply devices 111, a plurality of transformers 112 that supply AC power to the plurality of power supply devices 111, a power source 113 that supplies DC power to the plurality of transformers 112, batteries 114 connected to each of the plurality of transformers 112, a power transmission control unit 130, and a notification device 140.

The power supply devices 111 are installed on or in the road surface of the road RS along the traveling direction of the vehicle 200 (hereinafter also referred to as the "extension direction of the road RS"). The power supply devices 111 include a power transmission coil and a resonant capacitor. In FIG. 1, five power supply devices are shown as the power supply devices 111: a first power supply device 111a, a second power supply device 111b, a third power supply device 111c, a fourth power supply device 111d, and a fifth power supply device 111e. In the following description, when there is no particular need to distinguish the power supply devices, the symbols for distinguishing the power supply devices, such as the "nth" added at the beginning and the "n" added at the end, may be omitted.

Each of the multiple transformers 112 converts the DC power supplied from the power source 113 into high-frequency AC power and applies it to the power transmission coil of the power supply device 111. In this embodiment, one transformer 112 is connected to one or more power supply devices 111. In FIG. 1, three transformers, a first transformer 112a, a second transformer 112b, and a third transformer 112c, are shown as the transformers 112. The first transformer 112a is connected to the first power supply device 111a and the second power supply device 111b. The second transformer 112b is connected to the third power supply device 111c. The third transformer 112c is connected to the fourth power supply device 111d and the fifth power supply device 111e. In the following explanation, when there is no need to distinguish between transformers, the symbols for distinguishing between transformers, such as the "nth" at the beginning and the "n" at the end, may be omitted.

The power supply 113 supplies DC power to the transformer 112. For example, the power supply 113 is configured as an AC/DC converter circuit that rectifies the AC voltage of an external power transmission system, which is a commercial power source, and outputs a DC voltage.

The transformers 112 step up or step down the voltage applied to the power supply device 111 using DC power supplied from the batteries 114 connected to them. Note that multiple transformers 112 may share a single battery 114, or the battery 114 may be omitted. The transformer 112 may also be a combination of the transformer 112, the power source 113, and the battery 114. The transformer 112 converts AC power from the external power transmission system into DC power, and further converts it into high-frequency AC power.

The power transmission control unit 130 performs limit control to limit the supply of power to the power receiving device 210 when a first predetermined condition related to the power transmission system 110 is satisfied. The first condition will be described in detail later. As the limit control, for example, the power transmission control unit 130 reduces the amount of power per unit time that the power supply device 111 transmits to the power receiving device 210, or stops the power transmission of the power supply device 111. In this embodiment, the power transmission control unit 130 reduces the current per unit time that the power supply device 111 transmits to the power receiving device 210. In addition, the power transmission control unit 130 stops the power transmission by controlling the power transmission unit switching circuit that each of the multiple power supply devices 111 has. The power transmission switching circuit is a circuit that switches whether or not to transmit a signal sent from the transformer 112 to the power supply device 111. The power transmission control unit 130 can control the notification device 140 to notify information related to the limit control. For example, when limit control is to be performed, the power transmission control unit 130 notifies the vehicle that limit control will be performed.

The vehicle 200 includes a power receiving device 210, a main battery 230, a motor generator 240, an inverter circuit 250, a DC/DC converter circuit 260, an auxiliary battery 270, an auxiliary device 280, and a vehicle control device 290.

The power receiving device 210 includes a power receiving coil and a resonant capacitor, and is a device that obtains AC power induced in the power receiving coil by the electromagnetic induction phenomenon between the power receiving device 210 and the power supply device 111 in the power transmission system 110 described below. The converter 220 converts the AC power output from the power receiving device 210 into DC power. A specific configuration example of the converter 220 will be described later. The DC power output from the converter 220 can be used to charge the main battery 230 as a load, and can also be used to charge the auxiliary battery 270, drive the motor generator 240, and drive the auxiliary device 280.

The main battery 230 is a secondary battery that outputs DC power to drive the motor generator 240. The motor generator 240 operates as a three-phase AC motor and generates driving force for driving the vehicle 200. The motor generator 240 operates as a generator when the vehicle 200 decelerates and generates three-phase AC power. When the motor generator 240 operates as a motor, the inverter circuit 250 converts the DC power of the main battery 230 into three-phase AC power to drive the motor generator 240. When the motor generator 240 operates as a generator, the inverter circuit 250 converts the three-phase AC power output by the motor generator 240 into DC power and supplies it to the main battery 230.

The DC/DC converter circuit 260 converts the DC voltage of the main battery 230 into a lower DC voltage and supplies it to the auxiliary battery 270 and the auxiliary device 280. The auxiliary battery 270 is a secondary battery that outputs DC power to drive the auxiliary device 280. The auxiliary device 280 is a peripheral device such as an air conditioner or an electric power steering device.

The vehicle control device 290 controls each part in the vehicle 200 to perform automatic driving of the vehicle 200. When receiving power, the vehicle control device 290 controls the converter 220 to receive power. When a second predetermined condition related to the limit control of the power transmission system 110 is satisfied, the vehicle control device 290 can move the vehicle 200 to a position where it will not receive power from the power supply device that has been supplying power to the vehicle 200, but will receive power from another power supply device. The second condition will be described in detail later.

The power supply process shown in FIG. 2 is a process in which the power transmission system 110 transmits power to the power receiving device 210 via the power supply device 111. This process is performed when the power transmission system 110 supplies power to the vehicle 200.

In step S100, the power transmission control unit 130 determines whether a predetermined first condition is satisfied. The power transmission control unit 130 can adopt, for example, one or more of the following conditions as the first condition:

<First condition 1>
The temperature of the power supply device 111 supplying power to the power receiving device 210 is equal to or higher than a predetermined temperature (First Condition 2)
The voltage of the power supply device 111 supplying power to the power receiving device 210 is equal to or lower than a predetermined voltage (first condition 3).
The power supply device 111 that supplies power to the power receiving device 210 has a malfunction. (First condition 4)
The temperature of the transformer 112 connected to the power supply device 111 that supplies power to the power receiving device 210 is equal to or higher than a predetermined temperature (First Condition 5)
The remaining capacity of the battery connected to the transformer 112 connected to the power supply device 111 that supplies power to the power receiving device 210 is equal to or less than a threshold value <First condition 6>
The temperature of the power supply 113 is equal to or higher than a predetermined temperature.

The first condition can also be an appropriate combination of the above first conditions 1 to 6 or other conditions. In this embodiment, the power transmission control unit 130 employs the above first condition 1 and first condition 4, and determines that the first condition is met when either first condition 1 or first condition 4 is met.

If the first condition is met, the power transmission control unit 130 proceeds to step S110 and performs limit control to limit the supply of power to the power receiving device 210. On the other hand, if the first condition is not met, the power transmission control unit 130 proceeds to processing in step S120.

In step S120, the power transmission control unit 130 determines whether or not power supply is complete. Completion of power supply can be determined, for example, by whether or not the amount of power supplied by the power transmission system 110 to the power receiving device 210 has reached a predetermined target amount of power. If power supply is complete, the power supply process ends. On the other hand, if power supply is not complete, the power transmission control unit 130 returns to the process of step S100. In other words, the processes of steps S100 to S120 are repeatedly executed until power supply is complete.

The charging process shown in FIG. 3 is a process in which the vehicle control device 290 moves the vehicle 200 depending on the power supply status of the power transmission system 110. This process is repeated when the power receiving device 210 is supplied with power by the power transmission system 110 and the main battery 230 is charged. In the following, an example will be described in which the first power supply device 111a supplies power.

In step S200, the vehicle control device 290 acquires power supply information. The power supply information is information used to determine the second condition described below, such as the received power of the power receiving device 210 and the time it takes to supply power.

In step S210, the vehicle control device 290 determines whether a predetermined second condition regarding the limit control of the power transmission system 110 is satisfied. The power transmission control unit 130 can adopt, for example, one or more of the following conditions as the second condition:

<Second Condition 1>
The power transmission system 110 is performing limit control <Second condition 2>
There is a sign that the power transmission system 110 will implement limit control <Second condition 3>
A predetermined time or more has passed since the power transmission system 110 implemented limit control.

An example of a case where the second condition 3 is satisfied is when the power transmission system 110 performs limit control and continuously supplies power to the power receiving device 210 for a period of time that is equal to or longer than a predetermined period of time.

The second condition can also be an appropriate combination of the above second conditions 1 to 3 or other conditions. In this embodiment, the vehicle control device 290 employs the above-mentioned second condition 1 and second condition 2, and determines that the second condition is met when either second condition 1 or second condition 2 is met.

In this embodiment, the vehicle control device 290 determines that the above-mentioned second condition 1 is satisfied when the received power of the power receiving device 210 is equal to or less than the threshold power. In other words, the vehicle control device 290 determines that the second condition is satisfied when the received power of the power receiving device 210 is equal to or less than the threshold power.

If the second condition is not satisfied, more specifically, if the received power of the power receiving device 210 is greater than the threshold power, the vehicle control device 290 ends the charging process. On the other hand, if the second condition is satisfied, more specifically, if the received power of the power receiving device 210 is equal to or less than the threshold power, the process proceeds to step S220 and determines the destination of the vehicle 200. The vehicle control device 290 determines, as the destination, a power supply device 111 other than the first power supply device that has been supplying power to the vehicle 200, among the multiple power supply devices 111 of the power transmission system 110. For example, the vehicle control device 290 determines, as the destination, a power supply device 111 other than the first power supply device 111a that is closest to the vehicle 200 in the traveling direction of the vehicle 200. In this embodiment, the vehicle control device 290 determines, as the destination, the second power supply device 111b.

In step S230, the vehicle control device 290 moves the vehicle 200 to the destination determined in step S220. More specifically, the vehicle control device 290 moves the vehicle 200 to a position where the vehicle 200 will not receive power from the first power supply device 111a that was supplying power to the vehicle 200, but will receive power from the second power supply device 111b determined by the converter 220.

According to the power supply system 100 of the present embodiment described above, when the second condition is satisfied, the vehicle control device 290 can move the vehicle 200 to a position where the vehicle 200 does not receive power from the first power supply device 111a that has been supplying power to the vehicle 200, and can receive power from the second power supply device 111b. The second condition is that the power supply system 100 is performing limit control or has the possibility of performing limit control. In other words, the vehicle control device 290 can suppress the first power supply device 111a that is performing limit control or has the possibility of performing limit control from continuing to supply power to the vehicle 200. Therefore, it is possible to avoid a reduction in the amount of power per unit time supplied to the vehicle 200. As a result, the charging time of the vehicle 200 can be shortened.

In addition, in this embodiment, the vehicle control device 290 determines that the second condition is satisfied when the received power of the power receiving device 210 is equal to or less than the threshold power. Therefore, it is possible for the vehicle 200 alone to determine whether the second condition is satisfied without acquiring information from the power transmission system 110.

B. Second embodiment:
The second embodiment differs from the first embodiment in that the vehicle control device 290 determines that the second condition is satisfied when the time during which the power supply device 111 supplies power to the power receiving device 210 has exceeded a first threshold time. The configuration of the power supply system of the second embodiment is the same as that of the power supply system of the first embodiment, and therefore the description of the configuration of the power supply system will be omitted. The second embodiment also has substantially the same effects as the first embodiment.

C. Third embodiment:
The third embodiment differs from the first embodiment in that the vehicle control device 290 determines that the second condition is satisfied when the power transmission system 110 is performing intermittent operation. Since the configuration of the power supply system of the third embodiment is the same as the configuration of the power supply system of the first embodiment, a description of the configuration of the power supply system will be omitted.

In the third embodiment, the power transmission system 110 performs intermittent operation as limit control, in which power supply to the power receiving device 210 is alternately started and stopped. The start and stop of power supply is repeated, for example, every 10 seconds.

This third embodiment has almost the same effect as the first embodiment.

D. Fourth embodiment:
The fourth embodiment differs from the first embodiment in that the vehicle control device 290 determines that the second condition is satisfied when a notification regarding limit control is received from the power transmission system 110. The "notification regarding limit control" is a notification that is sent when the power transmission system 110 is implementing limit control or there is a sign that limit control will be implemented. The configuration of the power supply system of the fourth embodiment is the same as the configuration of the power supply system of the first embodiment, and therefore a description of the configuration of the power supply system will be omitted.

The power supply process in the fourth embodiment shown in FIG. 4 differs from the first embodiment in that the power transmission control unit 130 determines in step S100 that the first condition is satisfied, executes limit control in step S110, and then notifies the vehicle 200. The other steps are the same as those in the first embodiment.

In step S115, the power transmission control unit 130 notifies the vehicle 200 of the execution of limit control via the notification device 140. Note that steps S110 and S115 are not limited to this order and can be performed in any order, or may be performed in parallel.

According to the power supply system 100 of this embodiment described above, when the vehicle control device 290 receives a notification regarding limit control from the power transmission system 110, it determines that the second condition is satisfied. Therefore, when the power transmission system 110 is executing limit control, the vehicle control device 290 can reliably move the vehicle 200.

E. Fifth embodiment:
The fifth embodiment differs from the first embodiment in that the power receiving device 210 is simultaneously fed with power from two or more power feeding devices 111. The configuration of the power feeding system of the fifth embodiment is the same as the configuration of the power feeding system of the first embodiment, and therefore a description of the configuration of the power feeding system will be omitted.

In the fifth embodiment, the multiple power supply devices that simultaneously supply power to the power receiving device 210 are referred to as the "partial power supply devices." The following description will be given by taking as an example a case in which the partial power supply devices are the first power supply device 111a and the second power supply device 111b. In step S220 (FIG. 3) of the charging process, the vehicle control device 290 determines the destination of the vehicle 200 to be another power supply device among the multiple power supply devices 111 that does not include the partial power supply device that was supplying power to the vehicle 200. More specifically, the vehicle control device 290 determines the third power supply device 111c.

For example, when some of the power transmission systems 110 are simultaneously supplying power, even if only the first power supply device 111a is performing limit control, the second power supply device 111b that is not performing limit control may also perform limit control before power supply to the vehicle 200 is completed. In this case, it is necessary to move the vehicle 200 again. In other words, if the second power supply device 111b that is not performing limit control continues to supply power, it may be necessary to move the vehicle 200 multiple times until power supply is completed. However, according to this embodiment, the vehicle control device 290 moves the vehicle 200 to a position where it receives power supply from the third power supply device 111c, which is another power supply device that does not include any of the power supply devices that were supplying power among the multiple power supply devices 111, so that it is possible to reduce the number of moves required until power supply is completed.

F. Sixth embodiment:
The sixth embodiment differs from the fourth embodiment in that the vehicle control device 290 determines the destination of the vehicle 200 depending on the factor that causes the power transmission system 110 to satisfy the first condition. Since the configuration of the power supply system of the sixth embodiment is the same as the configuration of the power supply system of the fourth embodiment, a description of the configuration of the power supply system will be omitted.

In the sixth embodiment, in step S115 (FIG. 4), the power transmission control unit 130 notifies the vehicle 200 via the notification device 140 which of the power supply device 111 and the transformer 112 is the cause of satisfying the first condition. The power supply device 111 is the cause of satisfying the first condition when, for example, the temperature of the power supply device 111 supplying power to the power receiving device 210 is equal to or higher than a predetermined temperature. The transformer 112 is the cause of satisfying the first condition when, for example, the temperature of the transformer 112 connected to the power supply device 111 supplying power to the power receiving device 210 is equal to or higher than a predetermined temperature.

If the transformer 112 is the cause of satisfying the first condition in step S220 (FIG. 3) of the charging process, the vehicle control device 290 determines the destination of the vehicle 200 to be a power supply device 111 connected to another transformer 112 different from the transformer 112 to which the power supply device 111 that was supplying power to the vehicle 200 was connected. More specifically, the vehicle control device 290 determines the destination to be the third power supply device 111c connected to the second transformer 112b, which is a transformer different from the first transformer 112a to which the first power supply device 111a that was supplying power to the vehicle 200 is connected.

According to the power supply system 100 of the present embodiment described above, when limit control is to be implemented or there is a high possibility that limit control will be implemented due to a transformer, the vehicle control device 290 can suppress the movement of the vehicle 200 to a power supply device connected to the same transformer, thereby preventing limit control from being implemented at the destination. In addition, when limit control is to be implemented or there is a high possibility that limit control will be implemented due to a transformer, there is no need to move to a power supply device 111 connected to another transformer 112, which can suppress a long movement time.

G. Seventh embodiment:
5, the power supply system 100B in the seventh embodiment is different from the power supply system 100 in the first embodiment in that it includes a storage device 300. The storage device 300 stores the power supply device 111 that has been supplying power to the vehicle 200 when a second condition is satisfied.

In this embodiment, the storage device 300 is mounted on the vehicle 200. The storage device 300 does not have to be mounted on the vehicle 200, and instead, the power supply system 100 may include the storage device 300. The storage device 300 may also be an external server. The storage device 300 stores the power supply device 111 that was supplying power to the vehicle 200 when the second condition is satisfied.

In step S220 (FIG. 3), the vehicle control device 290 excludes the power supply device 111 stored in the storage device 300 from the candidate destinations for the vehicle 200.

The power supply device 111 for which the second condition was satisfied in the past may again implement the limit control before the power supply to the vehicle 200 is completed. However, according to the power supply system 100B of this embodiment, the vehicle control device 290 can suppress the movement of the vehicle 200 to the power supply device 111 for which the second condition is satisfied. Therefore, it may be possible to reduce the number of movements required until the power supply is completed.

H. Eighth embodiment:
The eighth embodiment differs from the first embodiment in that the vehicle control device 290 determines the destination of the vehicle 200 from the power supply device notified by the power transmission system 110. Since the configuration of the power supply system of the eighth embodiment is the same as the configuration of the power supply system of the first embodiment, a description of the configuration of the power supply system will be omitted.

The power supply device notification process shown in FIG. 6 is a process in which the power transmission system 110 notifies the vehicle 200 of one or more power supply devices 111 that satisfy a third predetermined condition. This process is performed by the power transmission system 110 for each power supply device 111. In addition, it is preferable that this process be performed for all power supply devices 111.

In step S300, the power transmission control unit 130 determines whether the target power supply device 111 satisfies a predetermined third condition, which includes not being subject to limit control. The power transmission control unit 130 can adopt, for example, one or more of the following conditions as the third condition:

<Third Condition 1>
The temperature of the power supply device 111 is less than a predetermined temperature. (Third condition 2)
The distance to the vehicle 200 is equal to or less than a predetermined distance. (Third condition 3)
The power supply device 111 is not broken. (Third condition 4)
The temperature of the connected transformer 112 is below a predetermined temperature.

The predetermined temperature in the above third condition 1 is preferably lower than the temperature in the first condition 1 adopted as the above-mentioned first condition. This makes it possible to determine power supply devices 111 that not only do not satisfy the first condition, but are unlikely to satisfy the first condition in the future. In other words, it is possible to determine power supply devices 111 that are unlikely to implement limit control.

The predetermined temperature in the above third condition 4 is preferably lower than the temperature in the first condition 4 adopted as the above-mentioned first condition. This makes it possible to determine power supply devices 111 connected to transformers 112 that not only do not satisfy the first condition, but are unlikely to satisfy the first condition in the future. In other words, it is possible to determine power supply devices 111 that are unlikely to implement limit control.

The third condition can also be determined by appropriately combining the above third conditions 1 to 4 or other conditions. In this embodiment, the power transmission control unit 130 employs the above third condition 1.

If the target power supply device 111 satisfies the third condition, i.e., if the target power supply device 111 is below a predetermined temperature, the power transmission control unit 130 proceeds to step S310 and notifies the vehicle 200 of the target power supply device 111 via the notification device 140. On the other hand, if the target power supply device 111 does not satisfy the third condition, i.e., if the target power supply device 111 is at or above a predetermined temperature, the power transmission control unit 130 ends the power supply device notification process.

In step S220 (FIG. 3) of the charging process, the vehicle control device 290 determines the destination of the vehicle 200 from among the power supply devices notified by the power transmission system 110.

According to the power supply system 100 of the present embodiment described above, the vehicle control device 290 determines, as the destination of the vehicle 200, a power supply device that satisfies a third condition, including not being subject to limit control. Therefore, the vehicle control device 290 can suppress the movement of the vehicle 200 to a power supply device 111 that is implementing output limiting.

I. Other embodiments:
(I1) In the above-described embodiment, the power transmission system 110 has a plurality of power supply devices 111 connected to one transformer 112. Alternatively, the power transmission system 110 may have a configuration in which a transformer 112 is connected to each of the power supply devices 111. Furthermore, the power transmission system 110 may include only one transformer 112.

(I2) In the above-described embodiment, the power transmission system 110 is configured to supply power without contact. Alternatively, the power transmission system 110 may be configured to supply power through contact. Specifically, the power transmission system 110 includes, as the power supply device 111, a power supply rail on the road surface of the road RS, for example. The power receiving device 210 mounted on the vehicle 200 may include, for example, a power receiving pad as the power receiving device 210, and includes a movable arm that moves the device under the vehicle and an arm drive unit that moves the arm, and the power receiving pad is brought into contact with the power supply rail to supply direct current. The power receiving device 210 does not need to include an arm, and for example, the power supply device 111 and the power receiving device 210 may always be in contact with each other.

(I3) In the above-described embodiment, the multiple power supply devices 111 are installed on or in the road surface of the road RS along the traveling direction of the vehicle 200. However, the multiple power supply devices 111 may be installed two-dimensionally. Furthermore, the power supply devices 111 may be installed in a parking lot or a charging space, rather than on the road RS on which the vehicle 200 travels.

(I4) In the above-described embodiment, the vehicle 200 may be an AGV (Automatic Guided Vehicle).

(I5) In the above-described embodiment, the vehicle control device 290 moves the vehicle 200 when the second condition is satisfied. However, the present invention is not limited to this. If the charge level of the main battery 230 or the auxiliary battery 270 is equal to or lower than a threshold, the vehicle control device 290 may continue charging without moving the vehicle. In this case, the vehicle control device 290 moves the vehicle 200 when the charge level of the main battery 230 or the auxiliary battery 270 becomes greater than the threshold. Furthermore, if there is another vehicle or an obstacle at the determined destination of the vehicle 200, the vehicle control device 290 may continue charging without moving the vehicle. The vehicle control device 290 can determine whether there is another vehicle at the destination by using, for example, a sensor such as a camera or laser mounted on the vehicle 200.

(I6) In the above-described embodiment, the power transmission control unit 130 determines whether the power supply is completed based on whether the amount of power supplied by the power transmission system 110 to the power receiving device 210 has reached a predetermined target amount of power. Without being limited to this, the power transmission control unit 130 may determine that the power supply is completed, for example, when the vehicle 200 is no longer present.

(I7) In the above-described embodiment, the vehicle control device 290 determines a power supply device 111 other than the first power supply device 111a that is closest to the vehicle 200 in the traveling direction of the vehicle 200 as the destination. Alternatively, the power transmission control unit 130 may select a power supply device 111 other than the first power supply device 111a that is closest to the vehicle 200. In this case, the vehicle control device 290 determines the power supply device 111 selected by the power transmission control unit 130 as the destination of the vehicle 200.

(I8) In the first embodiment described above, the vehicle control device 290 determines the second power supply device 111b connected to the first transformer 112a to which the first power supply device 111a that was supplying power to the vehicle 200 is connected as the destination. Without being limited to this, the vehicle control device 290 may determine the power supply device 111 to which another transformer 112 is connected as the destination. More specifically, the vehicle control device 290 can determine the third power supply device 111c to which the second transformer 112b is connected as the destination.

(I9) In the fourth embodiment described above, the power transmission system 110 notifies the vehicle 200 about the limit control when the first condition is satisfied. Not limited to this, the power transmission system 110 may notify the vehicle 200 about the limit control when there are signs that the limit control will be implemented even when the first condition is not satisfied.

(I10) In the seventh embodiment described above, the vehicle control device 290 may return the power supply device 111 that has been stored in the storage device 300 for more than the second threshold time to the list of candidate destinations. The second threshold time is, for example, the time required for the temperature of the power supply device 111 to become equal to or lower than the temperature in the first condition 1 adopted as the first condition described above. This allows the vehicle control device 290 to increase the number of candidate destinations for the vehicle 200.

(I11) In the seventh embodiment described above, the power transmission system 110 may notify the vehicle control device 290 of the power supply device 111 that no longer satisfies the second condition. In this case, the vehicle control device 290 returns the power supply device 111 notified by the power transmission system 110 to the candidate destinations. This allows the vehicle control device 290 to increase the number of candidate destinations for the vehicle 200.

The present disclosure is not limited to the above-described embodiments, and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in the embodiments corresponding to the technical features in each form described in the Summary of the Invention column can be replaced or combined as appropriate to solve the above-described problems or to achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate.

100, 100B...power supply system, 110...power transmission system, 111...power supply device, 111a...first power supply device, 111b...second power supply device, 111c...third power supply device, 111d...fourth power supply device, 111e...fifth power supply device, 112...transformer, 112a...first transformer, 112b...second transformer, 112c...third transformer, 113...power source, 114...battery, 130...power transmission control unit, 140...notification device, 200...vehicle, 210...power receiving device, 220...converter, 230...main battery, 240...motor generator, 250...inverter circuit, 260...DC/DC converter circuit, 270...auxiliary battery, 280...auxiliary device, 290...vehicle control device, 300...storage device, RS...road

Claims (10)

A power supply system (100) that supplies power to a power receiving device (210) mounted on a vehicle (200),
A power transmission system (110) having a plurality of power supply devices (111) each capable of supplying power to the power receiving device;
A vehicle control device (290) that executes automatic driving of the vehicle,
the power transmission system performs a limiting control to limit a supply of power to the power receiving device when a predetermined first condition is satisfied;
the vehicle control device, when a second predetermined condition related to the limit control of the power transmission system is satisfied in a case where two or more power supply devices, including a first power supply device that is part of the plurality of power supply devices and that has been supplying power to the vehicle, are simultaneously supplying power to the vehicle, moves the vehicle to a position where the vehicle can be supplied with power from another power supply device among the plurality of power supply devices that does not include the first power supply device that has been supplying power to the vehicle . A power supply system that supplies power to a power receiving device mounted on a vehicle,
a power transmission system including a plurality of power supply devices each capable of supplying power to the power receiving device;
A vehicle control device that executes automatic driving of the vehicle,
The power transmission system includes :
performing a limiting control to limit a supply of power to the power receiving device when a predetermined first condition is satisfied;
notifying the vehicle of one or more power supply devices that satisfy a predetermined third condition including at least being not a target of the limit control;
The vehicle control device includes :
When a second predetermined condition related to the limit control of the power transmission system is satisfied, the vehicle is moved to a position where it does not receive power from a first power supply device among the plurality of power supply devices that has been supplying power to the vehicle, and receives power from another power supply device included in the plurality of power supply devices ,
The power supply system determines a destination to which the vehicle is to be moved from one or more power supply devices notified by the power transmission system . A power supply system that supplies power to a power receiving device mounted on a vehicle,
a power transmission system including a plurality of power supply devices each capable of supplying power to the power receiving device;
A vehicle control device that executes automatic driving of the vehicle ;
A storage device (300),
the power transmission system performs a limiting control to limit a supply of power to the power receiving device when a predetermined first condition is satisfied;
the storage device stores a power supply device that supplies power to the vehicle when a second predetermined condition related to the limit control of the power transmission system is satisfied; and
a power supply system in which, when the second condition is satisfied, the vehicle control device determines a destination to a position where the vehicle will not receive power from a first power supply device among the multiple power supply devices that has been supplying power to the vehicle, but will receive power from another power supply device included in the multiple power supply devices , and moves the vehicle to the destination , and excludes the power supply devices stored in the storage device from candidates for the destination . The power supply system according to claim 3 ,
The vehicle control device returns the power supply device that has been stored in the storage device for a second threshold time or more to the candidates for the movement destination. The power supply system according to claim 3 or 4 ,
The power transmission system notifies the vehicle control device of a power supply device that no longer satisfies the second condition;
The vehicle control device returns the power supply device notified by the power transmission system to the candidate destinations. The power supply system according to any one of claims 1 to 5 ,
The second condition includes a condition that a received power of the power receiving device is equal to or less than a threshold power. The power supply system according to any one of claims 1 to 6 ,
The second condition includes a condition that a time period during which power is supplied from the first power supply device to the power receiving device has elapsed to be equal to or longer than a first threshold time. The power supply system according to any one of claims 1 to 7 ,
The power transmission system performs an intermittent operation as the limit control in which power supply to the power receiving device is alternately started and stopped,
The second condition includes execution of the intermittent operation. The power supply system according to any one of claims 1 to 8 ,
The power supply system, wherein the second condition includes receiving a notification regarding the limit control from the power transmission system. A power supply system that supplies power to a power receiving device mounted on a vehicle,
a power transmission system including a plurality of power supply devices each capable of supplying power to the power receiving device;
A vehicle control device that executes automatic driving of the vehicle,
The power transmission system includes :
a plurality of transformers (112) including a first transformer and other transformers;
performing a limiting control to limit a supply of power to the power receiving device when a predetermined first condition is satisfied;
notifying whether a first power supply device that has been supplying power to the vehicle or the first transformer among the plurality of power supply devices is a factor that satisfies the first condition;
Each of the plurality of transformers is connected to one or more of the power supply devices and supplies AC power to the power supply devices;
The vehicle control device, when the first transformer is a factor that satisfies the first condition, moves the vehicle to a position where it receives power from a power supply device connected to another transformer .

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