Vehicle charging system and electric vehicle

Abstract

To provide a vehicle charging system and an electric vehicle which can reduce congestion of a charging station.SOLUTION: A first processor 111 transmits a charging reservation in which a charging station for performing charging is designated to a server 2 through a first communication unit 14. A second processor 21 receives the charging reservation through a second communication unit 23 and, when a degree of congestion of the charging station designated in the charging reservation is a predetermined value or more, transmits information about a message that an incentive is conferred when driving is performed so as to cause an energy consumption efficiency of an electric vehicle 1 of a criterion value or more, to the electric vehicle 1 through the second communication unit 23. The first processor 111 receives the information about the message that the incentive is conferred when the driving is performed so as to cause the energy consumption efficiency of the electric vehicle 1 of the criterion value or more from the server 2 through the first communication unit 14.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to electric vehicles. [Background technology]

[0002] Conventionally, vehicles that charge batteries at charging stations along a travel route have been known. When it is determined that the vehicle cannot travel along a travel route using only the driving force of the electric motor, the plug-in hybrid vehicle described in Patent Document 1 provides guidance to the user to select whether or not to search for a travel route that passes through a charging station where an external power source is installed. This allows the battery to be charged along the travel route even if the vehicle cannot travel along the travel route using only the driving force of the electric motor, thereby improving user convenience. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-209066 A Summary of the Invention [Problem to be solved by the invention]

[0004] As the number of electric vehicles charging at a charging station increases, the charging station becomes congested, which results in vehicles having to stay at the charging station for a long time, resulting in delays in arriving at their destination.

[0005] Therefore, an object of the present disclosure is to provide a vehicle charging system and an electric vehicle that can reduce congestion at charging stations. [Means for solving the problem]

[0006] A vehicle charging system according to an aspect of the present disclosure includes an electric vehicle and a server. The electric vehicle includes a first processor, a first communication unit that communicates with the server, a power receiving device configured to be able to receive power in a charging station, and a battery for driving that is charged with the power received from the power receiving device. The first processor transmits a charging reservation that specifies a charging station to be used for charging to the server through the first communication unit. The server includes a second processor and a second communication unit that communicates with the electric vehicle. The second processor receives the charging reservation through the second communication unit, and when a congestion degree of the charging station specified in the charging reservation is equal to or higher than a predetermined value, transmits information to the electric vehicle through the second communication unit that an incentive will be given by driving the electric vehicle so that the energy consumption efficiency of the electric vehicle is equal to or higher than a reference value. The first processor receives information from the server through the first communication unit.

[0007] In the above configuration, when the congestion level of the charging station specified in the charging reservation is equal to or higher than a predetermined value, the server transmits information to the electric vehicle indicating that an incentive will be given by driving the electric vehicle so that the energy consumption efficiency of the electric vehicle is equal to or higher than a reference value. Thus, in order to obtain the incentive, the driver of the electric vehicle is expected to drive the electric vehicle so that the energy consumption efficiency of the electric vehicle is equal to or higher than the reference value. By driving the electric vehicle so that the energy consumption efficiency of the electric vehicle is equal to or higher than the reference value, battery consumption can be reduced, thereby shortening the charging time at the charging station. As a result, congestion at the charging station can be reduced. Effect of the Invention

[0008] According to the present disclosure, congestion at charging stations can be reduced. [Brief description of the drawings]

[0009] [Figure 1] 1 is a diagram showing a configuration of a vehicle charging system according to an embodiment; [Diagram 2] 1 is a diagram illustrating an example of the configuration of an electric vehicle 1 and a power transmission device 9. FIG. [Diagram 3] FIG. 13 is a diagram showing an example of charging stations along a travel route. [Figure 4] 4 is a flowchart showing a procedure for notifying an electric vehicle 1 of incentive information in order to reduce congestion at a charging station in the first embodiment. [Diagram 5] 4 is a flowchart showing a processing procedure when an electrically powered vehicle 1 that has received incentive information is charged at a station A in the first embodiment. [Figure 6] 1 is a flowchart showing a processing procedure when an electrically powered vehicle 1 that has received incentive information charges at a station B next to a station A on a travel route in the first embodiment. [Figure 7] 10 is a flowchart showing a procedure for notifying an electric vehicle 1 of incentive information in order to reduce congestion at a charging station in the second embodiment. [Figure 8] 10 is a flowchart showing a processing procedure when an electrically powered vehicle 1 that has received incentive information is charged at station B next to station A on the travel route in the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment will be described with reference to the drawings.

[0011] [First embodiment] FIG. 1 is a diagram showing a configuration of a vehicle charging system according to an embodiment.

[0012] The vehicle charging system includes a plurality of electric vehicles 1 and a server 2 that controls charging of the plurality of electric vehicles.

[0013] The electric vehicle 1 includes an ECU (Electronic Control Unit) 11, a first communication unit 14, and a navigation system 13. The ECU 11 includes a CPU (first processor) 111 and a first memory 112 such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The navigation system 13 includes a GPS receiver 131, a display 132, and a speaker 133.

[0014] The first memory 112 stores a program executable by the first processor 111. The first memory 112 temporarily stores data generated by the execution of the program in the first processor 111 and data input via the first communication unit 14. The first processor 111 controls each device in the electric vehicle 1 so that the electric vehicle 1 is in a desired state, based on detection values ​​of various sensors (not shown) and the program stored in the first memory 112. The first processor 111 generates various information to be exchanged with the server 2.

[0015] The first communication unit 14 is configured to be able to communicate with the server 2 in both directions.

[0016] The server 2 includes a CPU (second processor) 21, a second memory 22 such as a Read Only Memory (ROM) and a Random Access Memory (RAM), a second communication unit 23, and a charging station information DB 24.

[0017] The charging station information DB 24 manages the degree of congestion at each charging station. The degree of congestion at a certain charging station is, for example, the number of electric vehicles waiting to be charged at that charging station. The number of electric vehicles waiting to be charged at a certain charging station can be calculated based on an image obtained by photographing electric vehicles lined up in front of the charging station with a camera. Alternatively, the number of electric vehicles waiting to be charged at a certain charging station can be the number of electric vehicles that have made a reservation for charging at that charging station.

[0018] The second memory 22 stores a program executable by the second processor 21. The second memory 22 temporarily stores data generated by the execution of the program in the second processor 21 and data input via the second communication unit 23. The second processor 21 updates the congestion degree of the charging station in the charging station information DB based on images from a camera installed in each charging station, etc. The second processor 21 generates various information to be exchanged with the electric vehicle 1.

[0019] The second communication unit 23 is configured to be able to communicate with the electric vehicle 1 in both directions.

[0020] (Example of Incentive Information Transmission) The first processor 111 transmits a charging reservation specifying a charging station for charging to the server via the first communication unit 14.

[0021] The second processor 21 receives a charging reservation through the second communication unit 23, and when the congestion degree of the charging station specified in the charging reservation is equal to or higher than a predetermined value, transmits information to the electric vehicle 1 through the second communication unit 23 that an incentive will be given for driving such that the energy consumption efficiency of the electric vehicle 1 is equal to or higher than a reference value. The first processor 111 receives information from the server 2 through the first communication unit 14 that an incentive will be given for driving such that the energy consumption efficiency of the electric vehicle 1 is equal to or higher than a reference value.

[0022] The incentive is some kind of reward given to the driver of the electric vehicle 1. It may be a discount coupon for the charging fee of the electric vehicle 1 at a charging station, a discount coupon at an affiliated shopping mall, or a coupon for using a priority lane with shorter queues at a charging station.

[0023] The energy consumption efficiency is the electric power consumption of the electric vehicle 1. In the case where the electric vehicle 1 is a plug-in hybrid vehicle, it is the fuel consumption and the electric power consumption.

[0024] The navigation system 13 provides guidance on the travel route of the electric vehicle 1. The navigation system 13 includes a GPS (Global Positioning System) receiver 131, a display 132 with a touch panel, and a speaker 133.

[0025] The GPS receiver 131 identifies the position of the electric vehicle 1 based on radio waves from an artificial satellite (not shown). The navigation system 13 executes various navigation processes (such as searching for a driving route) using position information (GPS information) of the electric vehicle 1 identified by the GPS receiver 131.

[0026] The display 132 displays various information and accepts various operations by the driver. More specifically, the display 132 displays the current location of the electric vehicle 1 and the locations of charging stations superimposed on a road map around the electric vehicle 1. The display 132 accepts an operation by the driver to select a travel route for the electric vehicle 1. The display 132 can display information received from the server 2 indicating that an incentive will be given if the electric vehicle 1 is driven in such a way that the energy consumption efficiency of the electric vehicle 1 is equal to or greater than a reference value. The display 132 can display the incentive received from the server 2. The speaker 133 may output an audio message received from the server 2 indicating that an incentive will be given if the electric vehicle 1 is driven in such a way that the energy consumption efficiency of the electric vehicle 1 is equal to or greater than a reference value. The speaker 133 may output an audio message indicating the incentive received from the server 2.

[0027] Fig. 2 is a diagram illustrating an example of the configuration of electric vehicle 1 and power transmission device 9. Electric vehicle 1 further includes an inlet 161, a power conversion device 162, a battery 163, an inverter 164, a motor generator 165, and a power receiving device 166 in addition to the configuration illustrated in Fig. 1.

[0028] The inlet 161 is disposed inside a charging lid (not shown) provided on the exterior of the electric vehicle 1. The inlet 161 is configured so that a charging connector provided at the end of a charging cable extending from the charging equipment 8 (see FIG. 3) can be inserted into the inlet 161. When the charging connector is inserted into the inlet 161, the inlet 161 and the charging equipment 8 are electrically connected, enabling power transmission (contact charging) from the charging equipment 8 to the electric vehicle 1. The inlet 161 corresponds to a "first power receiving device" according to the present disclosure.

[0029] When AC power is supplied from the inlet 161 , the power conversion device 162 converts the AC power into DC power and supplies it to the battery 163 .

[0030] The battery 163 is an assembled battery including a plurality of cells. Each cell is a secondary battery such as a lithium ion battery or a nickel metal hydride battery. The battery 163 supplies electric power to the motor generator 165 for generating a driving force for the electric vehicle 1. The battery 163 also stores the electric power generated by the motor generator 165. The battery 163 is provided with a voltage sensor and a current sensor (neither shown) for the ECU 11 to calculate the SOC of the battery 163.

[0031] The inverter 164 converts the DC power stored in the battery 163 into AC power and supplies the AC power to the motor generator 165. The inverter 164 also converts the AC power (regenerative power) from the motor generator 165 into DC power and charges the battery 163 with the DC power.

[0032] The motor generator 165 receives electric power from the inverter 164 and applies a rotational force to the drive wheels, thereby causing the electric vehicle 1 to travel.

[0033] 2, the power receiving device 166 is disposed on the lower surface of a floor panel that forms the bottom surface of the electric vehicle 1. A power receiving coil is housed inside the power receiving device 166. The power receiving coil receives power transmitted from the power transmitting device 9 in a wireless manner. The AC power received by the power receiving device 166 is converted to DC power by an inverter (not shown) and charged into the battery 163. The AC power received by the power receiving device 166 can also be used to drive the motor generator 165.

[0034] The power transmitting device 9 includes a plurality of power transmitting units 91 to 96 and a controller 90. Although an example in which the number of power transmitting units is six is ​​shown in Fig. 2, the number of power transmitting units is not particularly limited and may be more than that.

[0035] The multiple power transmitting units 91-96 are arranged in a row on the travel lane (which may be the road surface or a side wall) of the electric vehicle 1. The multiple power transmitting units 91-96 each include a power transmitting coil 911-961. Each of the power transmitting coils 911-961 is electrically connected to an AC power source (not shown). Although not shown, each of the multiple power transmitting units 91-96 is provided with a sensor (optical sensor, weight sensor, etc.) for detecting the passage of the electric vehicle 1.

[0036] The controller 90 identifies the traveling position of the electric vehicle 1 based on the detection signals from each sensor. Then, the controller 90 supplies AC power from the AC power source to the power transmission coil in the power transmission unit above which the electric vehicle 1 is located, among the power transmission units 91-96.

[0037] More specifically, for example, when an electric vehicle 1 is detected above the power transmitting unit 91, the controller 90 supplies AC power to the power transmitting coil 911. Then, an AC current flows through the power transmitting coil 911, forming an electromagnetic field around the power transmitting coil 911. The power receiving coil in the power receiving device 166 receives power contactlessly through the electromagnetic field. Thereafter, when the electric vehicle 1 is no longer detected above the power transmitting unit 91, the controller 90 stops the supply of AC power to the power transmitting coil 911. This series of controls is performed for each of the power transmitting units 91-96, making it possible to transmit power contactlessly to the traveling electric vehicle 1 (contactless charging).

[0038] FIG. 3 is a diagram showing an example of charging stations along a driving route.

[0039] Charging stations are installed at rest points (for example, service areas on expressways) along the driving route. The charging station closest to the current value on the driving route is charging station A, and the next charging station after charging station A on the driving route is charging station B. Some charging stations are equipped with contact-type charging equipment 8, while others are equipped with contactless power transmission equipment 9.

[0040] The flowchart shown below is executed by being called from a main routine (not shown), for example, when a predetermined condition is satisfied. In the figure, the process executed by the server 2 is shown on the right side, and the process executed by the electric vehicle 1 (ECU 11) is shown on the left side. Each step is realized by software processing by the server 2 or the ECU 11, but may also be realized by hardware such as an LSI (Large Scale Integration) arranged in the server 2 or the ECU 11.

[0041] FIG. 4 is a flowchart showing a procedure for notifying the electric vehicle 1 of incentive information in order to reduce congestion at a charging station in the first embodiment.

[0042] In step S101, the first processor 111 of the electric vehicle 1 creates charging reservation information for reserving charging at the charging station A.

[0043] In step S102, the first processor 111 of the electric vehicle 1 transmits the charging reservation information to the server 2 through the first communication unit 14.

[0044] In step S103, the second processor 21 of the server 2 receives the charging reservation information through the second communication unit .

[0045] In step S104, the second processor 21 of the server 2 reads out the congestion degree of the charging station A from the charging station information DB 24. When the congestion degree of the charging station A is equal to or greater than a predetermined value TH1, the process proceeds to step S105. When the congestion degree of the charging station A is less than the predetermined value TH1, the process proceeds to step S106.

[0046] In step S105, the second processor 21 of the server 2 transmits, via the second communication unit 23 to the electric vehicle 1, incentive information indicating that an incentive will be given for driving in such a way that the energy consumption efficiency is equal to or greater than a reference value.

[0047] In step S106, the second processor 21 of the server 2 transmits, to the electric vehicle 1 through the second communication unit 23, reservation acceptance information indicating that the reservation has been accepted.

[0048] In step S107, the first processor 111 of the electric vehicle 1 receives, via the first communication unit 14, the incentive information or the reservation acceptance information.

[0049] In step S108, the first processor 111 of the electric vehicle 1 displays on the display 132 the incentive information or the reservation acceptance information.

[0050] (Example 1 of incentive provision) The first processor 111 calculates the energy consumption efficiency of the electric vehicle 1 and transmits the energy consumption efficiency to the server 2 via the first communication unit 14. For example, the energy consumption efficiency may be the electricity consumption from when the incentive information is received to when the vehicle arrives at the charging station. Alternatively, the energy consumption efficiency may be the electricity consumption from when the vehicle sets a destination and departs from the vehicle 1 to when the vehicle arrives at the charging station.

[0051] The second processor 21 receives the energy consumption efficiency through the second communication unit 23, and when the energy consumption efficiency of the electric vehicle 1 is equal to or greater than a reference value, transmits an incentive to the electric vehicle 1 through the second communication unit 23. The first processor 111 receives the incentive from the server 2 through the first communication unit 14.

[0052] When operation with high energy efficiency is performed, the charging time at a charging station can be shortened, thereby reducing congestion at the charging station.

[0053] FIG. 5 is a flowchart showing a processing procedure when the electrically powered vehicle 1 that has received incentive information is charged at the station A in the first embodiment.

[0054] In step S201, the first processor 111 of the electric vehicle 1, for example, when arriving at the charging station A, calculates the energy consumption efficiency from when the incentive information is received to when the electric vehicle 1 arrives at the charging station A.

[0055] In step S202, the first processor 111 of the electric vehicle 1 transmits the energy consumption efficiency information to the server 2 through the first communication unit .

[0056] In step S203, the second processor 21 of the server 2 receives the energy consumption efficiency information through the second communication unit .

[0057] In step S204, if the energy consumption efficiency is equal to or greater than the reference value, the process proceeds to step S205.

[0058] In step S205, the second processor 21 of the server 2 transmits the incentive X through the second communication unit 23.

[0059] In step S206, the first processor 111 of the electric vehicle 1 receives the incentive X through the first communication unit 14.

[0060] In step S207, the first processor 111 of the electric vehicle 1 stores the incentive X in the first memory 112 and displays it on the display 132.

[0061] (Example 2 of incentive provision) When the electric vehicle 1 can travel to the next charging station on the travel route, the first processor 111 transmits a charging reservation specifying the next charging station to the server 2 via the first communication unit 14. The first processor 111 calculates the energy consumption efficiency of the electric vehicle 1 and transmits the energy consumption efficiency to the server 2 via the first communication unit 14.

[0062] The second processor 21 receives the energy consumption efficiency through the second communication unit 23. When the energy consumption efficiency of the electric vehicle 1 is equal to or higher than a reference value and a charging reservation specifying the next charging station is received through the second communication unit 23, the second processor 21 transmits a first incentive to the electric vehicle 1 through the second communication unit 23. When the energy consumption efficiency of the electric vehicle 1 is equal to or higher than a reference value and a charging reservation specifying the next charging station is not received through the second communication unit 23, the second processor 21 transmits a second incentive to the electric vehicle 1 through the second communication unit 23.

[0063] The first incentive may have, for example, a higher monetary value (such as a discount rate) or a higher time value (such as waiting time) than the second incentive.

[0064] When operation with high energy consumption efficiency is performed and charging is performed at the next charging station, the charging time at the charging station can be shortened and the number of charging times can be reduced, so a first incentive is given.

[0065] When energy-efficient driving is performed and charging is not performed at the next charging station, the number of charging times cannot be reduced, but the charging time at the charging station is shortened, so a second incentive is given.

[0066] The first processor 111 receives the first incentive or the second incentive from the server 2 through the first communication unit 14.

[0067] FIG. 6 is a flowchart showing a processing procedure when the electric vehicle 1 that has received incentive information charges at station B next to station A on the travel route in the first embodiment.

[0068] In step S301, the first processor 111 of the electric vehicle 1 determines whether or not the electric vehicle 1 can travel to the next station B before arriving at the charging station A. If the electric vehicle 1 can travel to the next station B, the process proceeds to step S302. If the electric vehicle 1 cannot travel to the next station B, the process proceeds to step S305.

[0069] In step S302, the first processor 111 of the electric vehicle 1 creates charging reservation information for reserving charging at the charging station B.

[0070] In step S303, the first processor 111 of the electric vehicle 1 transmits charging reservation information for reserving charging at the charging station B to the server 2 via the first communication unit 14.

[0071] In step S304, when the electric vehicle 1 transmits charging reservation information to reserve charging at the charging station B, the second processor 21 of the server 2 receives the charging reservation information to reserve charging at the charging station B via the second communication unit 23.

[0072] In step S305, when the first processor 111 of the electric vehicle 1 arrives at the charging station B, the first processor 111 calculates the energy consumption efficiency from when the incentive information is received to when the electric vehicle 1 arrives at the charging station B.

[0073] In step S306, the first processor 111 of the electric vehicle 1 transmits the energy consumption efficiency information to the server 2 through the first communication unit .

[0074] In step S307, the second processor 21 of the server 2 receives the energy consumption efficiency information through the second communication unit .

[0075] In step S308, when the energy consumption efficiency is equal to or greater than the reference value and charging reservation information for reserving charging at the charging station B has been received, the process proceeds to step S309.

[0076] In step S309, the second processor 21 of the server 2 transmits the first incentive Y through the second communication unit 23.

[0077] In step S310, when the energy consumption efficiency is equal to or greater than the reference value and charging reservation information for reserving charging at the charging station B has not been received, the process proceeds to step S311.

[0078] In step S311, the second processor 21 of the server 2 transmits the second incentive Z through the second communication unit 23.

[0079] In step S312, the first processor 111 of the electric vehicle 1 receives the incentive Y or Z through the first communication unit 14.

[0080] In step S313, the first processor 111 of the electric vehicle 1 stores the incentive Y or Z in the first memory 112 and displays it on the display 132.

[0081] [Second embodiment] (Example of Incentive Information Transmission) The first processor 111 transmits a charging reservation specifying a charging station for charging to the server 2 via the first communication unit 14. The second processor 21 receives the charging reservation via the second communication unit 23, and when the congestion degree of the charging station specified in the charging reservation is equal to or greater than a predetermined value, transmits information to the electric vehicle 1 via the second communication unit 23 that an incentive will be given for charging at the next charging station on the travel route instead of charging at the charging station specified in the reservation. The first processor 111 receives information from the server 2 via the first communication unit 14 that an incentive will be given for charging at the next charging station on the travel route.

[0082] FIG. 7 is a flowchart showing a procedure for notifying the electric vehicle 1 of incentive information in order to reduce congestion at a charging station in the second embodiment.

[0083] In step S401, the first processor 111 of the electric vehicle 1 creates charging reservation information for reserving charging at the charging station A.

[0084] In step S402 , the first processor 111 of the electric vehicle 1 transmits the charging reservation information to the server 2 through the first communication unit 14 .

[0085] In step S403, the second processor 21 of the server 2 receives the charging reservation information through the second communication unit .

[0086] In step S404, the second processor 21 of the server 2 reads out the congestion degree of the charging station A from the charging station information DB 24. When the congestion degree of the charging station A is equal to or greater than a predetermined value TH1, the process proceeds to step S405. When the congestion degree of the charging station A is less than the predetermined value TH1, the process proceeds to step S406.

[0087] In step S405, the second processor 21 of the server 2 transmits, via the second communication unit 23 to the electric vehicle 1, incentive information indicating that an incentive will be provided for charging not at the charging station A but at the next charging station B.

[0088] In step S406, the second processor 21 of the server 2 transmits, via the second communication unit 23 to the electric vehicle 1, reservation acceptance information indicating that the reservation has been accepted.

[0089] In step S407, the first processor 111 of the electric vehicle 1 receives, via the first communication unit 14, the incentive information or the reservation acceptance information.

[0090] In step S408, the first processor 111 of the electric vehicle 1 displays on the display 132 the incentive information or the reservation acceptance information.

[0091] (Examples of incentives) When the electric vehicle 1 can travel to the next charging station on the travel route of the reserved charging station, the first processor 111 transmits a charging reservation specifying the next charging station to the server 2 through the first communication unit 14. The second processor 21 receives the charging reservation specifying the next charging station through the second communication unit 23, and transmits an incentive to the electric vehicle 1 through the second communication unit 23. The first processor 111 receives the incentive from the server 2 through the first communication unit 14.

[0092] There are cases where the number of charging times to reach the destination can be reduced by charging the electric vehicle 1 at the next station. For example, if there are four charging stations A, B, C, and D on the way to the destination, and charging is performed at charging station A, charging is also required at charging station D. However, if charging is performed at the next charging station B instead of charging station A, it may be possible to reach the destination without subsequent charging. In such cases, the number of charging times to reach the destination can be reduced, and therefore congestion at the charging stations can be reduced.

[0093] FIG. 8 is a flowchart showing a processing procedure when the electric vehicle 1 that has received incentive information charges at station B next to station A on the travel route in the second embodiment.

[0094] In step S501, the first processor 111 of the electric vehicle 1 determines whether or not the electric vehicle 1 can travel to the next station B during the period from when the electric vehicle 1 receives the incentive information until when the electric vehicle 1 arrives at the charging station A. If the electric vehicle 1 can travel to the next station B, the process proceeds to step S302.

[0095] In step S502, the first processor 111 of the electric vehicle 1 creates charging reservation information for reserving charging at the charging station B.

[0096] In step S503, the first processor 111 of the electric vehicle 1 transmits the charging reservation information to the server 2 through the first communication unit 14.

[0097] In step S504, the second processor 21 of the server 2 receives the charging reservation information through the second communication unit .

[0098] In step S505, the second processor 21 of the server 2 transmits the incentive W through the second communication unit 23.

[0099] In step S506, the first processor 111 of the electric vehicle 1 receives the incentive W through the first communication unit 14.

[0100] In step S507, the first processor 111 of the electric vehicle 1 stores the incentive W in the first memory 112 and displays it on the display 132.

[0101] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not by the description of the embodiments described above, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0102] 1 Electric vehicle, 2 Server, 8 Charging equipment, 9 Power transmission device, 13 Navigation system, 14 First communication unit, 21 Second processor, 22 Second memory, 23 Second communication unit, 90 Controller, 91-96 Power transmission unit, 111 First processor, 112 First memory, 131 GPS receiver, 132 Display, 133 Speaker, 161 Inlet, 162 Power conversion device, 163 Battery, 164 Inverter, 165 Motor generator, 166 Power receiving device, 911-961 Power transmission coil.

Claims

1. A vehicle charging system including an electric vehicle and a server, The electric vehicle includes: A first processor; A first communication unit that communicates with the server; a power receiving device configured to be able to receive power in a charging station; a battery for driving the vehicle that is charged by the power received from the power receiving device, The first processor transmits a charging reservation specifying a charging station for charging to the server via the first communication unit; The server, A second processor; and a second communication unit that communicates with the electric vehicle; the second processor receives the charging reservation through the second communication unit, and when a congestion degree of a charging station specified in the charging reservation is equal to or greater than a predetermined value, transmits information to the electric vehicle through the second communication unit, the information indicating that an incentive will be provided by driving the electric vehicle in such a way that an energy consumption efficiency of the electric vehicle is equal to or greater than a reference value; The first processor receives the information from the server through the first communication unit.

2. The first processor calculates an energy consumption efficiency of the electric vehicle and transmits the energy consumption efficiency to the server via the first communication unit; the second processor receives the energy consumption efficiency through the second communication unit, and when the energy consumption efficiency of the electric vehicle is equal to or greater than a reference value, transmits the incentive to the electric vehicle through the second communication unit; The vehicle charging system of claim 1 , wherein the first processor receives the incentive from the server through the first communication unit.

3. the first processor, when the electric vehicle can travel to a charging station next to the charging station on a travel route, transmits a charging reservation specifying the next charging station to the server via the first communication unit; The first processor calculates an energy consumption efficiency of the electric vehicle and transmits the energy consumption efficiency to the server via the first communication unit; The second processor receives the energy consumption efficiency through the second communication unit; when the energy consumption efficiency of the electric vehicle is equal to or greater than a reference value and a charging reservation designating the next charging station is received via the second communication unit, the second processor transmits a first incentive to the electric vehicle via the second communication unit; the second processor, when the energy consumption efficiency of the electric vehicle is equal to or greater than the reference value and a charging reservation designating the next charging station is not received through the second communication unit, transmits a second incentive to the electric vehicle through the second communication unit; The vehicle charging system of claim 1 , wherein the first processor receives the first incentive or the second incentive from the server through the first communication unit.

4. The vehicle charging system of claim 3 , wherein the first incentive has a higher monetary or time value than the second incentive.

5. An electric vehicle, A first processor; A first communication unit that communicates with the server; a power receiving device configured to be able to receive power in a charging station; a battery for driving the vehicle that is charged by the power received from the power receiving device, the first processor transmits a charging reservation specifying a charging station to be used for charging to the server via the first communication unit, and when a congestion level of the charging station specified in the charging reservation is equal to or higher than a predetermined value, receives information from the server via the first communication unit that an incentive will be provided for driving the electric vehicle in such a way that the energy consumption efficiency of the electric vehicle is equal to or higher than a reference value.

6. 6. The electric vehicle according to claim 5, wherein the first processor calculates an energy consumption efficiency of the electric vehicle, transmits the energy consumption efficiency to the server via the first communication unit, and receives the incentive from the server via the first communication unit when the energy consumption efficiency of the electric vehicle is equal to or greater than a reference value.

7. the first processor, when the electric vehicle can travel to a charging station next to the charging station on a travel route, transmits a charging reservation specifying the next charging station to the server via the first communication unit; The first processor calculates an energy consumption efficiency of the electric vehicle and transmits the energy consumption efficiency to the server via the first communication unit; the first processor receives a first incentive from the server via the first communication unit when the energy consumption efficiency of the electric vehicle is equal to or greater than a reference value and a charging reservation specifying the next charging station has been transmitted; 6. The electric vehicle according to claim 5, wherein the first processor receives a second incentive from the server via the first communication unit when an energy consumption efficiency of the electric vehicle is equal to or greater than the reference value and a charging reservation specifying the next charging station is not transmitted.

8. The electric vehicle according to claim 7 , wherein the first incentive has a higher monetary or time value than the second incentive.

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