JP2021078294A - Control device, power transmission device, and program - Google Patents

Abstract

To provide a control device, a power transmission device, and a program for properly determining whether to perform non-contact power transmission between a power transmission device installed on a road and a running vehicle.SOLUTION: A control device 32 that controls non-contact power transmission between a power supply device 30 installed on a road and a running vehicle includes an efficiency information acquisition unit 200 that acquires efficiency information indicating the transmission efficiency of power transmission between the vehicle and the power supply device and a determination unit 220 that determines whether to permit the non-contact power transmission between the power supply device and another vehicle based on the efficiency information acquired by the efficiency information acquisition unit.SELECTED DRAWING: Figure 2

Description

The present invention relates to control devices, power transmission devices and programs.

Patent Document 1 discloses a technique for temporarily stopping power transmission because there is a possibility that an obstacle may exist when the transmission efficiency of the power supplied in a non-contact manner is less than a specified value. Patent Documents 2 to 4 disclose techniques related to power supply control and traveling control of a vehicle.
[Prior art literature]
[Patent Document]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2010-119246 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-60807 [Patent Document 3] Japanese Patent Application Laid-Open No. 2018-14782 [Patent Document 4] Japanese Patent Application Laid-Open No. 2007-164280

It is desirable to appropriately determine whether or not non-contact power transmission is performed between the power transmission device provided on the road and the moving vehicle.

In the first aspect of the present invention, a control device is provided. The control device controls non-contact power transmission between the power transmission device provided on the road and the moving vehicle. The control device includes an efficiency information acquisition unit that acquires efficiency information indicating the transmission efficiency of power transmission between the vehicle and the power transmission device. The control device includes a determination unit that determines whether or not non-contact power transmission between the power transmission device and another vehicle is permitted based on the efficiency information acquired by the efficiency information acquisition unit.

The control device may include a control unit that stops the power output from the power transmission device when the determination unit determines that non-contact power transmission between the power transmission device and another vehicle is not permitted.

The efficiency information acquisition unit may acquire information indicating the transmission efficiency of power transmission between each of the plurality of vehicles and the power transmission device. The determination unit determines that non-contact power transmission between the power transmission device and the other vehicle is not permitted when the transmission efficiency between each of the plurality of vehicles and the power transmission device is lower than the reference value. Good.

The determination unit does not allow non-contact power transmission between the power transmission device and other vehicles when the number of vehicles whose transmission efficiency with the power transmission device is lower than the reference value exceeds a predetermined number. May be determined.

The efficiency information acquisition unit transmits power between a plurality of vehicles and each of the plurality of power transmission devices including the first power transmission device and the second power transmission device located along the traveling direction of the plurality of vehicles. Information indicating the transmission efficiency of the above may be acquired. In the determination unit, the transmission efficiency between the first power transmission device and the plurality of vehicles is higher than the predetermined first reference value, and the transmission between the second power transmission device and the plurality of vehicles is performed. When the efficiency is lower than the second reference value, which is lower than the first reference value, it may be determined that the non-contact power transmission between the second power transmission device and the other vehicle is not permitted.

The efficiency information acquisition unit determines the transmission efficiency of power transmission between the vehicle and each of a plurality of power transmission devices including the first power transmission device and the second power transmission device located along the traveling direction of the vehicle. You may get the information to show. In the determination unit, the transmission efficiency between the first power transmission device and the vehicle is higher than the predetermined first reference value, and the transmission efficiency between the second power transmission device and the vehicle is the first reference. If it is lower than the second reference value lower than the value, it may be determined that non-contact power transmission between the second power transmission device and another vehicle is not permitted.

A plurality of power transmission devices include a first power transmission device, a second power transmission device, and a third power transmission device, and a first power transmission device and a second power transmission along the traveling direction of the vehicle. When the device and the third power transmission device are located in this order, the determination unit determines that the transmission efficiency of power transmission between each of the first power transmission device and the third power transmission device and the vehicle is high. When the transmission efficiency of the power transmission between the second power transmission device and the vehicle is lower than the second reference value, which is higher than the first reference value, the second power transmission device and the other vehicle It may be determined that non-contact power transmission between them is not permitted.

The control unit may include a vehicle information acquisition unit that acquires vehicle information including at least one of the vehicle speed and the vehicle type. Based on the vehicle information acquired by the vehicle information acquisition unit and the efficiency information acquired by the efficiency information acquisition unit, the determination unit determines whether or not to allow non-contact power transmission between the power transmission device and another vehicle. You may judge.

The determination unit may determine that non-contact power transmission between the power transmission device and another vehicle is not permitted when the transmission efficiency is lower than the reference value determined based on the vehicle information.

When the control device determines that the determination unit does not allow non-contact power transmission between the power transmission device and the other vehicle, the control device guides the other vehicle to a lane different from the lane in which the power transmission device is provided. It may be provided with a guidance control unit.

In the second aspect of the present invention, a power transmission device is provided. The power transmission device includes the above-mentioned control device.

In a third aspect of the invention, a program is provided. The program causes the computer to function as the control device described above.

The outline of the above invention does not list all the necessary features of the present invention. Sub-combinations of these feature groups can also be inventions.

The basic configuration of the vehicle system 100 is shown schematically. The functional configuration of the power feeding device 30 is shown schematically. An example of transmission efficiency information stored in the storage device 290 is shown in a table format. An example of the reference efficiency information stored in the storage device 290 is shown in a table format. It is a figure which shows an example of the case where the determination unit 220 makes a determination without considering the transmission efficiency to a specific vehicle 40. The case of guiding the traveling lane of the vehicle 40 is shown. It is a flowchart which shows the procedure of the process which power-source device 30 executes. An example of a computer 2000 in which a plurality of embodiments of the present invention can be embodied in whole or in part is shown.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the inventions that fall within the scope of the claims. Also, not all combinations of features described in the embodiments are essential to the means of solving the invention. In the drawings, the same or similar parts may be given the same reference number to omit duplicate explanations.

FIG. 1 schematically shows the basic configuration of the vehicle system 100. The vehicle system 100 includes a vehicle 40a, a vehicle 40b, a vehicle 40c, a server 20, a power supply device 30a, a power supply device 30b, a power supply device 30c, and a power supply device 30d. In the present embodiment, the vehicle 40a, the vehicle 40b, and the vehicle 40c may be collectively referred to as the "vehicle 40". The power feeding device 30a, the power feeding device 30b, the power feeding device 30c, and the power feeding device 30d may be collectively referred to as the "power feeding device 30". The power supply device 30 is an example of a “power transmission device”.

The power feeding device 30 is provided on the road 80. The power feeding device 30 is provided on the road surface of the road 80 or in the vicinity of the road surface. The power feeding device 30 supplies electric power to the moving vehicle 40 in a non-contact manner. The power feeding device 30a, the power feeding device 30b, the power feeding device 30c, and the power feeding device 30d are provided on the road 80 along the lane.

The vehicle 40 is an example of transportation equipment. The vehicle 40 is a vehicle including a power source driven by electric energy, such as an electric vehicle. Electric vehicles include battery-powered electric vehicles (BEVs) and hybrid or plug-in hybrid electric vehicles (PHEVs) equipped with an internal combustion engine that provides at least a portion of the power.

The vehicle 40a includes a battery 42a, a control device 44a, and a power receiving unit 48a. The control device 44a is, for example, an ECU (Electronic Control Unit) or the like. The power receiving unit 48a receives power from the power feeding device 30 in a non-contact manner, for example, via a magnetic field. As a non-contact power transmission method from the power feeding device 30 to the power receiving unit 48a, for example, a magnetic field resonance coupling method can be used. The battery 42a is a secondary battery such as a lithium ion battery or a nickel hydrogen battery. The battery 42a is charged with the electric power received by the power receiving unit 48a. The vehicle 40 travels by the driving force of a power source driven by the electric power stored in the battery 42a.

The vehicle 40b includes a battery 42b, a control device 44b, and a power receiving unit 48b. The vehicle 40c includes a battery 42c, a control device 44c, and a power receiving unit 48c. The battery 42b and the battery 42c have the same functions as the battery 42a. The control device 44b and the control device 44c have the same functions as the control device 44a. The power receiving unit 48b and the power receiving unit 48c have the same functions as the power receiving unit 48a. The battery 42a, the battery 42b, and the battery 42c may be collectively referred to as the "battery 42". The control device 44a, the control device 44b, and the control device 44c may be collectively referred to as the "control device 44". The power receiving unit 48a, the power receiving unit 48b, and the power receiving unit 48c may be collectively referred to as the "power receiving unit 48".

The server 20 can communicate with the power feeding device 30 and the vehicle 40 through the communication network. The communication network may include transmission lines for wired or wireless communication. The communication network may include a communication network including the Internet, a P2P network, a dedicated line, a VPN, a power line communication line, a mobile phone line, and the like. The server 20 communicates with the power supply device 30 to manage the power supply device 30. Further, the server 20 communicates with the vehicle 40 to manage the lane in which the vehicle 40 travels.

In the present embodiment, when the power receiving unit 48 receives power from the power feeding device 30, the control device 44 of the vehicle 40 transmits power receiving amount information indicating the amount of power received from the power feeding device 30 to the power feeding device 30. The power supply device 30 calculates the power transmission efficiency from the power supply device 30 to the vehicle 40 based on the power reception information received from the control device 44. The power supply device 30 determines whether or not the transmission efficiency of electric power from the power supply device 30 to each of the plurality of vehicles 40 is lower than a predetermined reference value. The power feeding device 30 stops the power output to the vehicle 40 when the power transmission efficiency to the plurality of vehicles 40 continuously falls below the reference value.

For example, as shown in FIG. 1, when the power feeding device 30b supplies electric power to the vehicle 40a, the vehicle 40b, and the vehicle 40c in this order, the transmission efficiency to the vehicle 40a, the vehicle 40b, and the vehicle 40c is 80%, respectively. It is assumed that it is 23% and 25%. In this case, the power feeding device 30b determines that the transmission efficiency to the vehicle 40b and the vehicle 40c has continuously fallen below the predetermined reference value, and stops the power output to the subsequent vehicle 40.

For example, if the power feeding device 30 tries to supply electric power to the vehicle 40 in a state where there is a metallic or permeable magnetic foreign substance such as a falling object around the power feeding device 30, the magnetism may leak through the foreign substance. In this case, not only the transmission efficiency from the power feeding device 30 is lowered, but also the foreign matter itself is burned by the energy output from the power feeding device 30, and the energy output from the power feeding device 30 is transmitted to another place via the foreign matter. There is a risk of In the present embodiment, the power supply device 30 stops the power output when the transmission efficiency to the plurality of vehicles 40 falls below the reference value, so that the safety can be improved.

FIG. 2 schematically shows the functional configuration of the power feeding device 30. The power feeding device 30 includes a control device 32, a storage device 290, and a power output device 38.

The control device 32 is realized by a processing device including a processor. The storage device 290 is realized by including a non-volatile storage medium. The control device 32 performs processing using the information stored in the storage device 290.

The power output device 38 includes, for example, a power transmission coil and a primary circuit. The primary side circuit of the power output device 38 supplies the power supplied from the external power source to the power transmission coil and converts it into magnetic energy. The power receiving unit 48 of the vehicle 40 includes a power receiving coil and a secondary circuit. The power transmission coil and the power reception coil of the power output device 38 are magnetically coupled to form a resonance circuit between the primary side circuit and the secondary side circuit, and power is transmitted from the power supply device 30 to the vehicle 40 in a non-contact manner. ..

The control device 32 controls non-contact power transmission between the power supply device 30 provided on the road 80 and the moving vehicle 40. The control device 32 includes an efficiency information acquisition unit 200, a vehicle information acquisition unit 210, a determination unit 220, a control unit 230, and a notification unit 270.

The efficiency information acquisition unit 200 acquires efficiency information indicating the transmission efficiency of power transmission between the vehicle 40 and the power supply device 30. Specifically, the efficiency information acquisition unit 200 acquires information indicating the transmission efficiency of electric power from the power supply device 30 to the vehicle 40. More specifically, the efficiency information acquisition unit 200 communicates with the vehicle 40 that has finished receiving power from the power supply device 30 or the vehicle 40 that is receiving power from the power supply device 30, so that the power received by the vehicle 40 from the power supply device 30. Acquires power receiving information indicating the amount. The efficiency information acquisition unit 200 calculates the transmission efficiency of power from the power supply device 30 to the vehicle 40 based on the amount of power input to the power output device 38 and the amount of power received by the vehicle 40 from the power supply device 30. ..

The determination unit 220 determines whether or not to allow non-contact power transmission between the power supply device 30 and the other vehicle 40 based on the efficiency information acquired by the efficiency information acquisition unit 200. The control unit 230 stops the power output from the power output device 38 when the determination unit 220 determines that the non-contact power transmission between the power supply device 30 and the other vehicle 40 is not permitted. For example, the control unit 230 stops the primary side circuit included in the power output device 38.

The efficiency information acquisition unit 200 acquires information indicating the transmission efficiency of power transmission between each of the plurality of vehicles 40 and the power supply device 30. The determination unit 220 must allow non-contact power transmission between the power supply device 30 and the other vehicle 40 when the transmission efficiency between each of the plurality of vehicles 40 and the power supply device 30 is lower than the reference value. judge. When the number of vehicles 40 whose transmission efficiency between the power feeding device 30 and the power feeding device 30 is lower than the reference value exceeds a predetermined number, the determination unit 220 makes a non-contact between the power feeding device 30 and the other vehicle 40. Judge that power transmission is not permitted.

The efficiency information acquisition unit 200 is between the plurality of vehicles 40 and each of the plurality of power supply devices 30 including the first power supply device 30 and the second power supply device 30 located along the traveling direction of the plurality of vehicles 40. Acquires information indicating the transmission efficiency of power transmission in. In the determination unit 220, the transmission efficiency between the first power feeding device 30 and the plurality of vehicles 40 is higher than the predetermined first reference value, and the second power feeding device 30 and the plurality of vehicles 40 are used. When the transmission efficiency between the two is lower than the second reference value lower than the first reference value, it is determined that the non-contact power transmission between the second power feeding device 30 and the other vehicle 40 is not permitted.

For example, referring to FIG. 1, the power feeding device 30a is a power feeding device 30 behind the power feeding device 30b in the traveling direction of the vehicle 40. The power feeding device 30c is a power feeding device 30 in front of the direct power feeding device 30b in the traveling direction of the vehicle 40. In the determination unit 220, the transmission efficiency between each of the vehicle 40b and the vehicle 40c and the power feeding device 30a is higher than the first reference value, and the transmission efficiency between each of the vehicle 40b and the vehicle 40c and the power feeding device 30b is the first. The first condition is that the value is lower than the reference value of 2, and it may be determined that the power supply between the other vehicle 40 and the power supply device 30b is not permitted. Further, the determination unit 220 has a transmission efficiency between each of the vehicle 40b and the vehicle 40c and the power feeding device 30c higher than the first reference value, and the transmission efficiency between each of the vehicle 40b and the vehicle 40c and the power feeding device 30c. Is lower than the second reference value as the second condition, and it may be determined that the power supply between the other vehicle 40 and the power supply device 30b is not permitted. Further, the determination unit 220 may determine that the power supply between the other vehicle 40 and the power supply device 30b is not permitted when the above-mentioned first condition and the second condition are satisfied.

The efficiency information acquisition unit 200 includes at least one vehicle 40 and a plurality of power supply devices 30 including a first power supply device 30 and a second power supply device 30 located along the traveling direction of the vehicle 40. Information indicating the transmission efficiency of the power transmission between the two may be acquired. The plurality of power feeding devices 30 may be able to directly transmit and receive transmission efficiencies to each other by wired communication or wireless communication. The plurality of power feeding devices 30 may be able to mutually acquire information indicating transmission efficiency through the server 20. In the determination unit 220, the transmission efficiency between the first power feeding device 30 and the vehicle 40 is higher than the predetermined first reference value, and the transmission efficiency between the second power feeding device 30 and the vehicle 40 is second. When it is lower than the second reference value, which is lower than the reference value of 1, it is determined that the non-contact power transmission between the second power feeding device 30 and the other vehicle 40 is not permitted.

For example, referring to FIG. 1, in the determination unit 220, the transmission efficiency between the vehicle 40b and the power feeding device 30a is higher than the first reference value, and the transmission efficiency between the vehicle 40b and the power feeding device 30b is second. The first condition is that the value is lower than the reference value of, and it may be determined that the power supply between the other vehicle 40 and the power supply device 30b is not permitted. Further, the determination unit 220 indicates that the transmission efficiency between the vehicle 40b and the power feeding device 30c is higher than the first reference value, and the transmission efficiency between the vehicle 40b and the power feeding device 30c is lower than the second reference value. As the second condition, it may be determined that the power supply between the other vehicle 40 and the power supply device 30b is not permitted.

The plurality of power supply devices 30 include the first power supply device 30, the second power supply device 30, and the third power supply device 30, and the first power supply device 30, the second power supply device 30 along the traveling direction of the vehicle 40. When the device 30 and the third power supply device 30 are located in this order, the determination unit 220 transmits power between each of the first power supply device 30 and the third power supply device 30 and the vehicle 40. When the transmission efficiency is higher than the first reference value and the transmission efficiency of power transmission between the second power supply device 30 and the vehicle 40 is lower than the second reference value, the second power supply device 30 and the other It is determined that non-contact power transmission with the vehicle 40 is not permitted. For example, the determination unit 220 may determine that the power supply between the other vehicle 40 and the power supply device 30b is not permitted when the above-mentioned first condition and the second condition are satisfied.

The vehicle information acquisition unit 210 acquires vehicle information including at least one of the vehicle speed and the vehicle type of the vehicle 40. The vehicle information may be transmitted from the vehicle 40 to the power feeding device 30, for example, together with the power receiving information. The determination unit 220 permits non-contact power transmission between the power supply device 30 and the other vehicle 40 based on the vehicle 40 information acquired by the vehicle information acquisition unit 210 and the efficiency information acquired by the efficiency information acquisition unit 200. Determine whether or not to do so. For example, the determination unit 220 determines that non-contact power transmission between the power feeding device 30 and the other vehicle 40 is not permitted when the transmission efficiency is lower than the reference value determined based on the vehicle information. As a result, the determination unit 220 can determine whether or not to allow non-contact power transmission in consideration of the change in transmission efficiency depending on the vehicle speed and the difference in transmission efficiency depending on the vehicle type.

When the determination unit 220 determines that the non-contact power transmission between the power supply device 30 and the other vehicle 40 is not permitted, the notification unit 270 notifies the server 20. When the server 20 receives the notification from the power supply device 30, the server 20 guides the other vehicle 40 so that the other vehicle 40 does not travel in the lane provided with the power supply device 30 that has transmitted the notification. As a result, the notification unit 270 guides another vehicle to a lane different from the lane in which the power feeding device 30 is provided through the server 20. The notification unit 270 is an example of a "guidance control unit" that guides another vehicle to a lane different from the lane in which the power transmission device is provided.

FIG. 3 shows an example of transmission efficiency information stored in the storage device 290 in a table format. The transmission efficiency information associates the time, vehicle ID, vehicle type ID, vehicle speed, vehicle height, and transmission efficiency.

The "time" is the time when the power feeding device 30 supplies power to the vehicle 40. The "vehicle ID" is identification information of the vehicle 40 fed by the power feeding device 30. The "vehicle type ID" is information indicating the vehicle type of the vehicle 40 supplied by the power supply device 30. The "vehicle height ID" is information indicating the vehicle height of the vehicle 40 supplied by the power supply device 30. The "transmission efficiency" is the transmission efficiency of electric power from the power feeding device 30 to the vehicle 40. As described above, the transmission efficiency is calculated based on the power receiving information received from the vehicle 40 by the power feeding device 30 and the electric power input to the power output device 38. The vehicle ID, the vehicle height ID, and the information indicating the vehicle speed are included in the vehicle information transmitted from the vehicle 40 to the power supply device 30 and transmitted to the power supply device 30. The determination unit 220 determines whether or not to allow non-contact power transmission based on the transmission efficiency history stored in the storage device 290.

FIG. 4 shows an example of the reference efficiency information stored in the storage device 290 in a table format. The reference efficiency information associates the vehicle ID, the vehicle speed, the vehicle height, and the reference efficiency. The "reference efficiency" is information indicating a transmission efficiency that serves as a reference for non-contact power feeding from the power feeding device 30 to the vehicle. The reference efficiency may be a "reference value" for determining whether or not the determination unit 220 permits non-contact power transmission with another vehicle 40.

Specifically, the determination unit 220 refers to the reference efficiency information and specifies the reference efficiency corresponding to the combination of the vehicle ID, the vehicle speed, and the vehicle height received from the vehicle 40. Then, the determination unit 220 compares the specified reference efficiency with the transmission efficiency from the power feeding device 30 to the vehicle 40, and determines whether or not non-contact power transmission with the other vehicle 40 is permitted. To do. The reference efficiency may include the above-mentioned "first reference value" and "second reference value". As shown in FIG. 4, the determination unit 220 determines the reference efficiency based on the vehicle type, vehicle speed, and vehicle height, and considers the influence of the vehicle type, vehicle speed, and vehicle height on the power transmission efficiency. It is possible to appropriately determine whether or not to stop the power supply to the vehicle 40.

FIG. 5 is a diagram showing an example of a case where the determination unit 220 determines without considering the transmission efficiency to the specific vehicle 40. In the example of FIG. 5, the power transmission efficiency from the power supply device 30a, the power supply device 30b, the power supply device 30c, and the power supply device 30d to the vehicle 40c changes at 19%, 25%, 15%, and 20%, which are lower than the reference values. doing. If the transmission efficiency of the plurality of power feeding devices 30 to the specific vehicle 40 is lower than the reference value, the cause may be on the vehicle 40 side. In such a case, the determination unit 220 of the power feeding device 30c makes a determination without using the transmission efficiency to the vehicle 40c.

Specifically, the determination unit 220 of the power feeding device 30c acquires the transmission efficiency from the other power feeding device 30 to the vehicle 40c when the transmission efficiency to the vehicle 40c is lower than the reference value. Then, the determination unit 220 determines that the transmission efficiency to the vehicle 40c is not used when the transmission efficiency from the other power feeding device 30 to the vehicle 40c is lower than the reference value. This makes it possible to reduce the possibility that the power feeding device 30 is stopped unnecessarily.

FIG. 6 shows a situation in which the server 20 guides the vehicle 40. In the chargeable section 600 during traveling, the power feeding device 30 is provided in one lane 610 of the two lanes on each side, and the power feeding device 30 is not provided in the other lane 620. When a part of the power supply device 30 of the power supply device 30 stops the power supply, the server 20 prohibits the traveling of a part of the section in which the power supply device 30 is provided in the lane 610, and the vehicle 40 Guide the vehicle to stay in lane 620.

Specifically, when the power supply is stopped, the power supply device 30 transmits a stop notification indicating that the power supply is stopped to the server 20. The server 20 sets a section in a predetermined range including the position of the power feeding device 30 that has transmitted the stop notification to the non-travelable section 650. The server 20 transmits a lane change instruction to the vehicle 40 traveling in front of the section 650 in the lane 610 to change the traveling lane from the lane 610 to the lane 620. In this way, the server 20 guides the vehicle 40 to a lane 620 different from the lane 610 provided with the power feeding device 30 that has transmitted the stop notification. As a result, the vehicle 40 can be prevented from traveling on the road 80 in which the power feeding device 30 cannot supply power due to the presence of foreign matter or the like.

When the server 20 receives the stop notification from the power feeding device 30, the server 20 may collect information indicating the condition of the road 80 and determine whether or not a foreign substance exists in the vicinity of the power feeding device 30. The server 20 may transmit a lane change instruction to the vehicle 40 on condition that it determines that a foreign object is present. As a result, it is possible to prevent unnecessary prohibition of traveling in the lane 610. The "information indicating the condition of the road 80" may be image information captured by an in-vehicle camera mounted on the vehicle 40. The server 20 may detect the presence of a foreign substance by acquiring image information from the vehicle 40 traveling in the vicinity of the power feeding device 30 and analyzing the acquired image information. Further, after transmitting the lane change instruction, the server 20 collects information indicating the condition of the road 80 and determines whether or not the foreign matter has been removed. When the server 20 determines that the foreign matter has been removed, the server 20 may stop the transmission of the lane change instruction to release the traveling prohibition state of the lane 610.

The server 20 may instruct the vehicle 40 to travel on a road other than the road 80 provided with the power feeding device 30 that has transmitted the stop notification. Further, the server 20 may allow the vehicle to travel in the lane 610 without transmitting the lane change instruction to the vehicle that does not have the function of performing non-contact charging while traveling.

FIG. 7 is a flowchart showing a procedure of processing executed by the power feeding device 30. The flowchart of FIG. 7 is mainly executed by the control device 32. The flowchart of FIG. 7 starts when the power receiving information and the vehicle information are received from the vehicle 40.

In S700, the efficiency information acquisition unit 200 calculates the power transmission efficiency from the power output device 38 to the vehicle 40 based on the power reception information and the amount of power input to the power output device 38.

In S702, the determination unit 220 determines whether or not the number of vehicles 40 having a transmission efficiency lower than the reference value continues to be equal to or greater than the reference number. The reference number may be two or more predetermined arbitrary values.

In S704, when the number of vehicles whose transmission efficiency is lower than the reference value continues to be equal to or greater than the reference value, in S704, the determination unit 220 transfers the vehicle from another power feeding device 30 located in the front-rear direction along the traveling direction of the vehicle 40 to the vehicle 40. Acquire information indicating transmission efficiency. In the determination of S706, when it is determined that the transmission efficiency from the other power supply device 30 to the vehicle 40 is equal to or higher than the reference value, the power output device 38 is stopped (S708), and the power supply stop notification is sent to the server 20. Transmit (S710).

In the determination of S706, when the transmission efficiency from the other power supply device 30 to the vehicle 40 is less than the reference value, the determination unit 220 excludes the information on the transmission efficiency of the vehicle 40 so as not to be used for the determination. (S712), the processing of this flowchart is processed. Further, in the determination of S702, when the number of vehicles 40 whose transmission efficiency is lower than the reference value does not continue for the reference number or more, the processing of this flowchart is processed.

In S702 of the above flowchart, when the ratio of the number of vehicles 40 whose transmission efficiency is less than the reference value to the number of vehicles 40 to which the power supply device 30 has supplied power exceeds a predetermined threshold value, the process proceeds to S704. It may be. For example, the determination unit 220 may proceed to S704 when the number of vehicles 40 whose transmission efficiency is less than the reference value is 7 or more among the 10 vehicles to which the power feeding device 30 has recently supplied electric power.

In the vehicle system 100 described above, a mode in which the server 20 includes at least a part of the functions executed by the control device 32 may be adopted. For example, the server 20 may calculate the power transmission efficiency from the power supply device 30 to the vehicle 40. Specifically, the control device 44 of the vehicle 40 may transmit the power receiving information and the vehicle information to the server 20. The control device 32 may transmit information indicating the amount of electric power input to the electric power output device 38 during the period in which the electric power is supplied to the vehicle 40 to the server 20. The server 20 may calculate the transmission efficiency based on the information received from the control device 44 and the control device 32.

Further, the server 20 may have at least a part of the functions of the determination unit 220. For example, the server 20 may determine whether or not to stop the power transmission from the power supply device 30 to the other vehicle 40 based on the power transmission efficiency from the power supply device 30 to the vehicle 40. When the server 20 determines that the power transmission from the power supply device 30 to the other vehicle 40 is stopped, the server 20 may instruct the power supply device 30 to stop the power transmission to the other vehicle 40.

Further, the control device 44 of the vehicle 40 receives from the power supply device 30 information indicating the amount of electric power input to the power output device 38 during the period when the power supply device 30 supplies power to the vehicle 40, and together with the power reception information and the vehicle information. , Information indicating the amount of electric power may be transmitted to the server 20. In this embodiment, the control device 44 of the vehicle 40 may calculate the transmission efficiency of electric power from the power supply device 30 to the vehicle 40.

The vehicle system 100 described above is a system for transmitting electric power from the power supply device 30 to the vehicle 40. Such "non-contact power transmission from the power supply device 30 to the running vehicle 40" is an example of "non-contact power transmission between the power transmission device and the running vehicle". As a modification of this embodiment, the power feeding device 30 may have a function of receiving electric power from a moving vehicle 40 in a non-contact manner. Such "non-contact power transmission from the running vehicle 40 to the power supply device 30" is also an example of "non-contact power transmission between the power transmission device and the running vehicle".

FIG. 8 shows an example of a computer 2000 in which a plurality of embodiments of the present invention can be embodied in whole or in part. The program installed in the computer 2000 causes the computer 2000 to perform an operation associated with the device or each part of the device, which causes the computer 2000 to function as a device such as the control device 32 and the storage device 290 according to the embodiment or each part of the device. , And / or the process according to the embodiment or the stage of the process can be executed. Such a program may be executed by the CPU 2012 to cause the computer 2000 to perform specific operations associated with some or all of the processing procedures and blocks of the block diagram described herein.

The computer 2000 according to this embodiment includes a CPU 2012 and a RAM 2014, which are connected to each other by a host controller 2010. The computer 2000 also includes a ROM 2026, a flash memory 2024, a communication interface 2022, and an input / output chip 2040. The ROM 2026, the flash memory 2024, the communication interface 2022, and the input / output chip 2040 are connected to the host controller 2010 via the input / output controller 2020.

The CPU 2012 operates according to the programs stored in the ROM 2026 and the RAM 2014, thereby controlling each unit.

The communication interface 2022 communicates with other electronic devices via the network. The flash memory 2024 stores programs and data used by the CPU 2012 in the computer 2000. The ROM 2026 stores a boot program or the like executed by the computer 2000 at the time of activation, and / or a program depending on the hardware of the computer 2000. The input / output chip 2040 also allows various input / output units such as keyboards, mice and monitors to input / output units such as serial ports, parallel ports, keyboard ports, mouse ports, monitor ports, USB ports, HDMI® ports, etc. It may be connected to the input / output controller 2020 via the output port.

The program is provided via a computer-readable medium or network such as a CD-ROM, DVD-ROM, or memory card. RAM 2014, ROM 2026, or flash memory 2024 are examples of computer-readable media. The program is installed in flash memory 2024, RAM 2014, or ROM 2026 and is executed by CPU 2012. The information processing described in these programs is read by the computer 2000 and provides a link between the program and the various types of hardware resources described above. The device or method may be configured to implement the operation or processing of information in accordance with the use of computer 2000.

For example, when communication is executed between the computer 2000 and the external device, the CPU 2012 executes the communication program loaded in the RAM 2014, and performs communication processing on the communication interface 2022 based on the processing described in the communication program. You may order. Under the control of the CPU 2012, the communication interface 2022 reads the transmission data stored in the transmission buffer processing area provided in the recording medium such as the RAM 2014 and the flash memory 2024, transmits the read transmission data to the network, and transmits the read transmission data from the network. The received received data is written to the reception buffer processing area or the like provided on the recording medium.

Further, the CPU 2012 makes the RAM 2014 read all or necessary parts of the file or the database stored in the recording medium such as the flash memory 2024, and executes various kinds of processing on the data on the RAM 2014. Good. The CPU 2012 then writes back the processed data to the recording medium.

Various types of information such as various types of programs, data, tables, and databases may be stored in recording media and processed for information processing. The CPU 2012 refers to the data read from the RAM 2014 in various types of operations, information processing, conditional determination, conditional branching, unconditional branching, information retrieval / described in the present specification and specified by the instruction sequence of the program. Various types of processing, including replacement, may be performed and the results are written back to RAM 2014. Further, the CPU 2012 may search for information in a file, a database, or the like in the recording medium. For example, when a plurality of entries each having an attribute value of the first attribute associated with the attribute value of the second attribute are stored in the recording medium, the CPU 2012 specifies the attribute value of the first attribute. The entry that matches the condition is searched from the plurality of entries, the attribute value of the second attribute stored in the entry is read, and the first attribute satisfying the predetermined condition is selected. You may get the attribute value of the associated second attribute.

The program or software module described above may be stored on or near a computer 2000 on a computer-readable medium. A recording medium such as a hard disk or RAM provided in a dedicated communication network or a server system connected to the Internet can be used as a computer-readable medium. A program stored on a computer-readable medium may be provided to the computer 2000 via a network.

A program installed in the computer 2000 that causes the computer 2000 to function as the control device 32 may act on the CPU 2012 or the like to cause the computer 2000 to function as each part of the control device 32. When the information processing described in these programs is read into the computer 2000, the efficiency information acquisition unit 200 and the vehicle information acquisition unit, which are specific means in which the software and the various hardware resources described above cooperate with each other, are used. It functions as 210, a determination unit 220, a control unit 230, and a notification unit 270. Then, by realizing the calculation or processing of information according to the purpose of use of the computer 2000 in the present embodiment by these specific means, a specific control device 32 according to the purpose of use is constructed.

Various embodiments have been described with reference to block diagrams and the like. In the block diagram, each block may represent (1) the stage of the process in which the operation is performed or (2) each part of the device responsible for performing the operation. Specific stages and parts are implemented by dedicated circuits, programmable circuits supplied with computer-readable instructions stored on a computer-readable medium, and / or processors supplied with computer-readable instructions stored on a computer-readable medium. You can. Dedicated circuits may include digital and / or analog hardware circuits, and may include integrated circuits (ICs) and / or discrete circuits. Programmable circuits are memory elements such as logical AND, logical OR, logical XOR, logical NAND, logical NOR, and other logical operations, flip-flops, registers, field programmable gate arrays (FPGA), programmable logic arrays (PLA), etc. May include reconfigurable hardware circuits, including, etc.

The computer-readable medium may include any tangible device capable of storing instructions executed by the appropriate device, so that the computer-readable medium having the instructions stored therein is specified in the processing procedure or block diagram. Consists of at least a portion of a product that contains instructions that can be executed to provide a means to perform the performed operation. Examples of computer-readable media may include electronic storage media, magnetic storage media, optical storage media, electromagnetic storage media, semiconductor storage media, and the like. More specific examples of computer-readable media include floppy (registered trademark) disks, diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), Electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disk read-only memory (CD-ROM), digital versatile disk (DVD), Blu-ray (RTM) disk, memory stick, integrated A circuit card or the like may be included.

Computer-readable instructions are assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or object-oriented programming such as Smalltalk, JAVA®, C ++, etc. Includes either source code or object code written in any combination of one or more programming languages, including languages and traditional procedural programming languages such as the "C" programming language or similar programming languages. Good.

Computer-readable instructions are applied locally to a general purpose computer, a special purpose computer, or the processor or programmable circuit of another programmable data processor, or a wide area network (WAN) such as a local area network (LAN), the Internet, etc. A computer-readable instruction may be executed to provide a means for performing the processing procedure or operation specified in the block diagram provided via). Examples of processors include computer processors, processing units, microprocessors, digital signal processors, controllers, microcontrollers and the like.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. Further, to the extent that there is no technical contradiction, the matters described for the specific embodiment can be applied to other embodiments. It is clear from the description of the claims that such modified or improved forms may also be included in the technical scope of the present invention.

The order of execution of operations, procedures, steps, steps, etc. in the devices, systems, programs, and methods shown in the claims, specification, and drawings is particularly "before" and "prior to". It should be noted that it can be realized in any order unless the output of the previous process is used in the subsequent process. Even if the scope of claims, the specification, and the operation flow in the drawings are explained using "first", "next", etc. for convenience, it means that it is essential to carry out in this order. It's not a thing.

20 Server 30 Power supply device 32 Control device 38 Power output device 40 Vehicle 42 Battery 44 Control device 48 Power receiving unit 80 Road 100 Vehicle system 200 Efficiency information acquisition unit 210 Vehicle information acquisition unit 220 Judgment unit 230 Control unit 270 Notification unit 290 Storage device 600 Rechargeable section while driving 610 lane 620 lane 650 section 2000 Computer 2010 Host controller 2012 CPU
2014 RAM
2020 Input / Output Controller 2022 Communication Interface 2024 Flash Memory 2026 ROM
2040 Input / Output Chip

Claims (12)

A control device that controls non-contact power transmission between a power transmission device installed on a road and a moving vehicle.
An efficiency information acquisition unit that acquires efficiency information indicating the transmission efficiency of the power transmission between the vehicle and the power transmission device, and an efficiency information acquisition unit.
A control device including a determination unit for determining whether or not to allow non-contact power transmission between the power transmission device and another vehicle based on the efficiency information acquired by the efficiency information acquisition unit. Further provided is a control unit that stops the power output from the power transmission device to the other vehicle when the determination unit determines that non-contact power transmission between the power transmission device and the other vehicle is not permitted. The control device according to claim 1. The efficiency information acquisition unit acquires information indicating the transmission efficiency of the power transmission between each of the plurality of vehicles and the power transmission device.
The determination unit permits non-contact power transmission between the power transmission device and the other vehicle when the transmission efficiency between each of the plurality of vehicles and the power transmission device is lower than the reference value. The control device according to claim 1 or 2, which is determined not to be used. The determination unit is a non-contact between the power transmission device and another vehicle when the transmission efficiency between the power transmission device and the vehicle exceeds a predetermined number of vehicles having a lower than the reference value. The control device according to claim 3, wherein it is determined that power transmission is not permitted. The efficiency information acquisition unit is between the plurality of vehicles and each of the plurality of power transmission devices including the first power transmission device and the second power transmission device located along the traveling direction of the plurality of vehicles. The information indicating the transmission efficiency of the power transmission of the above is acquired, and
In the determination unit, the transmission efficiency between the first power transmission device and the plurality of vehicles is higher than a predetermined first reference value, and the second power transmission device and each of the plurality of vehicles When the transmission efficiency between the two is lower than the second reference value lower than the first reference value, it is determined that non-contact power transmission between the second power transmission device and another vehicle is not permitted. The control device according to claim 4. The efficiency information acquisition unit transmits power between the vehicle and each of a plurality of power transmission devices including a first power transmission device and a second power transmission device located along the traveling direction of the vehicle. Obtain information indicating the transmission efficiency of
In the determination unit, the transmission efficiency between the first power transmission device and the vehicle is higher than a predetermined first reference value, and the transmission efficiency between the second power transmission device and the vehicle is higher. 1 or 2 for determining that non-contact power transmission between the second power transmission device and another vehicle is not permitted when is lower than the second reference value, which is lower than the first reference value. The control device described in. The plurality of power transmission devices include the first power transmission device, the second power transmission device, and the third power transmission device, and the first power transmission device along the traveling direction of the vehicle. When the second power transmission device and the third power transmission device are located in this order, the determination unit determines each of the first power transmission device, the third power transmission device, and the vehicle. The transmission efficiency of the power transmission between the two is higher than the first reference value, and the transmission efficiency of the power transmission between the second power transmission device and the vehicle is higher than the second reference value. The control device according to claim 6, wherein when it is low, it is determined that non-contact power transmission between the second power transmission device and another vehicle is not permitted. A vehicle information acquisition unit for acquiring vehicle information including at least one of the vehicle speed and the vehicle type is further provided.
The determination unit performs non-contact power transmission between the power transmission device and another vehicle based on the vehicle information acquired by the vehicle information acquisition unit and the efficiency information acquired by the efficiency information acquisition unit. The control device according to any one of claims 1 to 7, which determines whether or not to permit. 8. The determination unit determines that non-contact power transmission between the power transmission device and another vehicle is not permitted when the transmission efficiency is lower than the reference value determined based on the vehicle information. The control device described in. When the determination unit determines that non-contact power transmission between the power transmission device and the other vehicle is not permitted, the other vehicle is guided to a lane different from the lane in which the power transmission device is provided. The control device according to any one of claims 1 to 9, further comprising an induction control unit. A power transmission device including the control device according to any one of claims 1 to 10. A program for causing a computer to function as the control device according to any one of claims 1 to 10.

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