JP2013073385A - Power supply system of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately grasp power consumption actually consumed by individual vehicles with respect to power supplied to a travelling vehicle.SOLUTION: When a vehicle enters a power supply section, with a signal of section entrance transmitted by a charge calculation device on an infrastructure side as a trigger, a power integrated value recorded in a power calculation device of the vehicle is reset, and an ID code of the vehicle is transmitted to the charge calculation device on the infrastructure side. The power calculation device of the vehicle calculates and integrates received power on the basis of a current detection value and a voltage detection value, stops the power integration when a signal of section exit transmitted by a charge calculation device 60 is received when a terminal point of the power supply section is reached, and transmits the power integrated value of the section to the charge calculation device together with the ID code of the vehicle. Thus, charge processing on individual vehicles can be highly accurately performed by the charge calculation device.

Description

  The present invention relates to a vehicle power supply system that supplies power to a vehicle traveling on a road.

  In recent years, attempts have been made to increase the cruising range of a vehicle by providing a device for supplying electric energy to a traveling vehicle as an infrastructure facility. For example, Patent Document 1 discloses a system that converts microwaves into electric energy while a vehicle is running, integrates the amount of power received by an energy management device, and enables section charging when an ETC in-vehicle device is installed. Has been. Patent Document 2 discloses a system that receives electric power by electromagnetic induction using a coil, stores the electric power in a capacitor, and charges a usage fee based on the charged amount of the capacitor.

JP 2004-246518 A JP 2005-73313 A

  However, in the prior art, knowing how much electric energy an individual vehicle actually used is not technically clarified, and the user of the vehicle who has received the electric energy from the infrastructure side device. When it is charged, it is difficult to count the consumption amount for each individual vehicle. Therefore, there are many systems that charge a uniform fee for a predetermined travel section. In this case, since the amount of consumption varies according to individual differences of vehicles and driving conditions, charging with a uniform charge becomes unequal.

  The present invention has been made in view of the above circumstances, and provides a vehicle power supply system capable of accurately grasping the amount of power actually consumed by each vehicle with respect to the power supplied to the traveling vehicle. It is intended to provide.

  A power supply system for a vehicle according to the present invention includes a power supply device that supplies power to a vehicle that travels in a power supply section that is provided over a predetermined section of a road, and is mounted on the vehicle and receives power from the power supply device. A power receiving device, a power calculating device mounted on the vehicle and calculating the power received by the power receiving device and integrating the power over the power feeding section; an integrated power amount transmitted from the power calculating device; and identification of the vehicle And a billing calculation device that performs billing processing for the user of the vehicle based on the received integrated power amount and the identification code.

  According to the present invention, it is possible to accurately grasp the amount actually consumed by each vehicle with respect to the electric power supplied to the running vehicle, and thereby it is possible to construct a highly accurate charging system. It becomes.

Overall configuration diagram of the power supply system Explanatory diagram showing the feed start point and feed end point Flow chart showing system operation flow

Embodiments of the present invention will be described below with reference to the drawings.
A power supply system 100 shown in FIG. 1 includes a vehicle 10 traveling on a road 1, a road-side power supply device 50 that supplies power to the vehicle 10, and a billing calculation device that performs billing processing according to the amount of power supplied. 60 and basic. Characteristically, the power supply system 100 has a function of measuring and integrating the electric power received from the road-side power supply device 50 for each vehicle 10 by itself, and the amount of energy actually received by the individual vehicle 10 is the same. It is possible to realize a system capable of charging and paying.

  For example, power supply to the vehicle 10 can be realized by using a wireless power feeding method such as electromagnetic induction or electromagnetic resonance, and depending on conditions, a wired power supply method such as a railway overhead wire can be used. is there. In the present embodiment, an example in which power is supplied by an electromagnetic induction method is shown, and the power feeding device 50 controls a power transmission coil unit 50 a embedded in the road 1 and power feeding from the power transmission coil unit 50 a to the vehicle 10. And a control unit 50b.

  The power transmission coil unit 50a is provided by embedding a loop-shaped power transmission coil formed in a flat plate shape in the road surface of the road 1, and is provided over a preset power feeding section. A high voltage AC controlled by the control unit 50b is applied to the power transmission coil unit 50a, and electric power can be supplied to the outside of the road 1 by electromagnetic induction of the AC voltage.

  In the present embodiment, the vehicle 10 is an electric vehicle that travels using the power of the motor 11, and is equipped with a battery 12 that serves as an electric supply source to the motor 11 and an inverter 13 that drives the motor 11. Further, the vehicle 10 includes a power receiving device 14 for receiving power from the power feeding device 50, and a rectifier 15 for converting the power (AC power) received by the power receiving device 14 into DC power and supplying it to the battery 12. I have.

  The power receiving device 14 is a power receiving coil that is formed in a flat plate shape along the bottom surface of the vehicle body. When the vehicle 10 passes over the power transmitting coil unit 50a embedded in the road 1, the power receiving device 14 is applied to the power transmitting coil unit 50a. Inductive power is received by the power receiving device 14 by the electromagnetic induction of the alternating voltage. The AC power received by the power receiving device 14 is converted to DC power by the rectifier 15 and charged to the battery 12. As will be described later, in this embodiment, the power receiving device 14 also serves as an antenna for performing wireless communication with a device outside the vehicle 10, and when entering the power feeding section of the road 1, the vehicle 10 An identification code (ID code) for identifying is transmitted to the outside.

  Further, the vehicle 10 is equipped with a power calculation device 20 for calculating the power received from the power supply device 50. The power calculation device 20 is configured around a microcomputer, and includes a voltage detection value detected between the rectifier 15 and the battery 12 as an electric load, and a current sensor 16 interposed between the rectifier 15 and the battery 12. Based on the detected current value, the amount of power received by the vehicle 10 is calculated, and this amount of power is integrated in the power feeding section of the power feeding device 50.

  The amount of power integrated by the power calculation device 20 of the vehicle 10 is transmitted to a billing calculation device 60 provided as a facility on the infrastructure side of the power supply system 100. In this embodiment, charging calculation device 60 performs wireless communication with vehicle 10 by sharing power transmission coil unit 50a embedded in road 1 as a communication antenna, and enters and exits vehicle 10 from the power feeding section. Is monitored, and the approaching vehicle is identified and billed.

  For example, as shown in FIG. 2, gates 60a and 60b that detect a vehicle by a camera, a photoelectric tube, or the like at the start point and end point of the power supply section of the road 1 are used for entering and exiting the power supply section of the vehicle. It is possible to monitor by providing. Alternatively, the vehicle side may periodically transmit a vehicle ID to notify the billing calculation device 60 of the vehicle position, and determine entry / exit from the vehicle position to the power feeding section.

In addition, the control part 50b and the charge calculation apparatus 60 of the electric power feeder 50 can also be embed | buried underground, without setting it as a ground installation. Further, the communication between the billing calculation device 60 and the vehicle 10 may be a method such as ETC (Electronic Toll Collection System).
Next, the flow of operation in the above power supply system 100 will be described using the flowchart of FIG.

  When the vehicle 10 enters the power supply section, first, as a process of step S1, a signal indicating a section entry signal is transmitted from the infrastructure-side billing calculation device 60 to the vehicle 10. The vehicle 10 resets the integrated power value recorded in the power calculation device 20 from the start signal of this section as the starting point as the process of step S2, and the ID for managing the approaching vehicle as the process of step S3. The code is transmitted to the billing calculation device 60.

  Subsequent step S4 is a process of the power calculation device 20 of the vehicle 10. The power calculation device 20 detects the current and voltage received by the power receiving device 14 and transmitted to the battery 12, and the current detection value and the voltage detection value are obtained. Originally, the received power is calculated and integrated. Then, when the vehicle 10 reaches the end point of the power feeding section, a signal indicating a signal for leaving the section is transmitted from the billing calculation device 60 to the vehicle 10 as processing in step S5.

  When the vehicle 10 receives this exit signal, the vehicle 10 stops the power integration at the time when the exit signal is received and records it as a history as a process of step S6, and records the power integration value of the section as the vehicle ID. It is transmitted to the billing calculation device 60 together with the code. Thereby, the billing calculation device 60 detects the total power consumption of the section and performs billing processing for each vehicle. This billing process is, for example, a process of automatically debiting a charge from the account of the financial institution of the user of each vehicle for each individual vehicle identified from the vehicle ID.

  As described above, in the present embodiment, it is possible to accurately grasp the amount actually consumed by each vehicle with respect to the electric power supplied from the infrastructure side to the traveling vehicle, and a highly accurate charging system. Can be built. In other words, it becomes possible to collect the amount of electric energy supplied from the infrastructure side as much as each vehicle actually consumed, and it is possible to build a framework without unfairness as a highly public infrastructure . For example, it is possible to construct a business model that leads to improvement of environmental awareness as a public facility and suppression of energy consumption, such as giving incentives such as lowering the fare for vehicles that drive economically.

DESCRIPTION OF SYMBOLS 1 Road 10 Vehicle 14 Power receiving apparatus 20 Power calculation apparatus 50 Power supply apparatus 50a Power transmission coil part 50b Control part 60 Charge calculation apparatus 100 Power supply system

Claims (4)

A power supply device that supplies power to a vehicle traveling in a power supply section provided over a predetermined section of the road;
A power receiving device mounted on the vehicle for receiving power from the power supply device;
A power calculator mounted on the vehicle and calculating the power received by the power receiver and integrating the power over the power feeding section;
A charging calculation device that receives the integrated power amount transmitted from the power calculation device and the identification code of the vehicle, and performs a charging process for the user of the vehicle based on the received integrated power amount and the identification code; A vehicle power supply system comprising the vehicle.   The vehicle power supply system according to claim 1, wherein the power calculation device calculates power based on a current value and a voltage value from the power receiving device to an electric load of the vehicle.   The power calculation device receives a signal to start power supply from the charging calculation device when the vehicle enters the power supply section, and resets the previous power integration amount starting from the signal to start integration of received power. After that, when the vehicle leaves the feeding section, a signal indicating the end of power supply is received from the billing calculation device, and the power summation is stopped at the sign and the power summation value is transmitted to the billing calculation device. The vehicle power supply system according to claim 1 or 2.   The power feeding device and the power receiving device transmit and receive electric power by electromagnetic induction via a power transmission coil and a power receiving coil, and also use the power transmission coil and the power receiving coil as a communication antenna. The vehicle power supply system according to any one of 1 to 3.

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