JP2007159359A - Power transfer system, power transfer device, and power transfer device mounted on vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power transfer system, a power transfer device and a power transfer device mounted on a vehicle by which positioning of a parking/stopping position is accurately achieved, efficient power transfer is attained, and moreover communication between the vehicle and the power transfer device is performed, when the vehicle is parked at a parking/stopping zone in which the power transfer device is arranged. <P>SOLUTION: When the vehicle 1 is parked and stopped at the parking/stopping zone where the power transfer device 20 is arranged; an electromagnetic wave is transmitted and received between the vehicle 1 and the power transfer device 20 by which a relative position is adjusted between the vehicle 1 and the power transfer device 20, a power transfer mechanism is driven outside the vehicle which is included in the power transfer device 20, and positioning is performed at a positioning portion of such as a pressure switch so that a transformer may be formed by the mechanism outside the vehicle and a power transfer mechanism mounted on the vehicle included in the vehicle 1. The power is transferred at the transformer formed by both of the power transfer mechanisms. Moreover, two-way communication is achieved by transmission and reception of the electromagnetic wave used for positioning, and power line communication is realized at power transfer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  A power transfer system comprising a vehicle and a power transfer device that transfers AC power between the vehicle, a power transfer device used in the power transfer system, and power mounted on the vehicle used in the power transfer system More particularly, the present invention relates to a power transfer system, a power transfer device, and a power transfer vehicle-mounted device that transfer power between a vehicle and a power transfer device that is disposed in a parking area where a vehicle is parked or stopped.

In recent years, vehicles that use electric power as a power source such as electric vehicles and hybrid vehicles have been put into practical use, and various charging devices that transfer electric power to the vehicles have been proposed. For example, a charging device for an electric vehicle described in Patent Document 1 includes a secondary coil unit disposed in an electric vehicle by fitting a primary coil unit disposed on a wall surface of a parking lot into a receiving case of the electric vehicle. Can face the primary coil unit and charge the electric vehicle.
Japanese Patent Laid-Open No. 9-102429

  However, in the charging device for electric vehicles described in Patent Document 1, sufficient examination has not been made on a positioning method for fitting the primary coil unit disposed on the wall surface of the parking lot into the electric vehicle. There's a problem.

  The present invention has been made in view of such circumstances, and a power transfer device is provided in a parking and stopping area where a vehicle is parked and stopped, and the vehicle and the power transfer device are linked to each other between the vehicle and the power transfer device. A power transfer system capable of accurately positioning a parking / stopping position of a vehicle by adjusting a relative position, a power transfer device used in the power transfer system, and used in the power transfer system The main purpose is to provide an on-vehicle power transfer device mounted on a vehicle.

  Another object of the present invention is to provide a power transfer system and the like that realize efficient power transfer by forming a transformer in each of the power transfer units included in the vehicle and the power transfer device.

  Another object of the present invention is to provide a power transfer system or the like that can communicate between a vehicle and a power transfer device.

  A power transfer system according to a first aspect of the present invention includes a vehicle including a power transfer vehicle-mounted device, and a power transfer device disposed in a parking and stopping area where the vehicle is parked and stopped, the power transfer vehicle-mounted device and the power transfer device, In the power transfer system for transferring AC power between the power transfer on-vehicle device, the power transfer on-vehicle device includes an on-vehicle power transfer unit that transfers AC power, and an on-vehicle position adjustment unit that is required for adjusting the relative position of the power transfer device. The power transfer device includes: an outside power transfer unit that transfers AC power; and a vehicle outside position adjustment unit that is required to adjust the relative position of the power transfer on-vehicle device. When the position adjustment unit adjusts the relative positions of the power transfer vehicle-mounted device and the power transfer device, AC power is transferred between the vehicle power transfer unit and the vehicle power transfer unit.

  In the present invention, the power transfer in-vehicle device and the power transfer device cooperate to adjust the relative position between the power transfer in-vehicle device and the power transfer device, thereby accurately positioning the parking / stopping position of the vehicle. Thus, the feasibility and practicality can be improved, and efficient power transfer can be realized.

  The power transfer system according to a second aspect of the present invention is the power transfer system according to the first aspect, wherein the in-vehicle power transfer unit provided in the power transfer in-vehicle device is disposed in a lower part of the vehicle, and the power transfer device includes an out-of-vehicle power transfer unit. It is further characterized by further comprising: a drive unit that moves, and a positioning unit that determines a stop position of the moving external power transfer unit by contacting the vehicle.

  In the present invention, it is possible to adjust the position of the external power transfer unit provided in the power transfer device in the drive unit and the positioning unit, for example, the position in the vertical direction. Power transfer can be realized.

  In the power transfer system according to a third aspect of the present invention, in the first or second aspect of the invention, each of the in-vehicle power transfer unit and the out-of-vehicle power transfer unit has a coil, and the two power transfer units are brought close to or in contact with each other. It is configured to form a transformer.

  In the present invention, it is possible to realize efficient power transfer by forming a transformer in the on-vehicle power transfer unit and the off-vehicle power transfer unit.

  A power transfer system according to a fourth invention is the power transfer system according to the third invention, wherein one of the power transfer vehicle-mounted device and the power transfer device includes a superimposing unit that superimposes communication data having a frequency higher than the AC power to be transferred on the AC power to be transferred. Further, the other of the power transfer in-vehicle device and the power transfer device further includes a separation unit that separates communication data from AC power.

  In the present invention, by superimposing communication data on power, it is possible to realize power line communication in which data communication is performed using a power line between the power transfer in-vehicle device and the power transfer device.

  A power transfer system according to a fifth invention is the power transfer system according to any one of the first to fourth inventions, wherein one of the in-vehicle position adjusting unit and the out-of-vehicle position adjusting unit includes a transmitting unit that transmits electromagnetic waves, and the in-vehicle position adjusting unit. The other of the vehicle outside position adjustment unit includes a receiving unit that receives an electromagnetic wave transmitted from one side, and a detection unit that detects a position based on the received electromagnetic wave.

  In the present invention, an electromagnetic wave transmitted from a transmitter included in one of the power transfer in-vehicle device and the power transfer device is received by a receiver included in the other, and a relative positional relationship is detected based on the received electromagnetic wave. Can detect and adjust the relative positions of each other, so that the parking / stopping position of the vehicle can be determined with high accuracy, and the feasibility and practicality can be improved. It is possible to realize power transfer.

  The power transfer system according to a sixth aspect of the present invention is the power transfer system according to the fifth aspect, further comprising a plurality of receiving units, wherein the detecting means is configured to detect a position based on the electromagnetic waves received by the plurality of receiving units, respectively. It is characterized by.

  In the present invention, since the electromagnetic wave received by the receiving unit is attenuated according to the distance from the transmitting unit, the ratio of the distance from each receiving unit to the transmitting unit is determined based on the intensity of the electromagnetic wave received by each receiving unit. Since it is possible to detect and adjust the relative position of each other with high accuracy based on the ratio of the derived distance, it is possible to position the parking / stopping position of the vehicle with high accuracy, Feasibility and practicality can be improved, and efficient power transfer can be realized. And, for example, it is possible to adjust the relative position in the horizontal direction between the vehicle and the power transfer device by disposing the transmitter so as to transmit the electromagnetic wave upward and the receiver on the lower surface of the vehicle. It is.

  A power transfer system according to a seventh aspect of the present invention is the power transmission system according to the fifth or sixth aspect, wherein the transmitting unit includes means for converting communication data into electromagnetic waves, and the receiving unit converts the received electromagnetic waves into communication data. It is characterized by providing.

  In the present invention, it is possible to realize data communication between the power transfer in-vehicle device and the power transfer device.

  The power transfer system according to an eighth aspect of the present invention is characterized in that, in any one of the fifth to seventh aspects, the in-vehicle position adjustment unit and the out-of-vehicle position adjustment unit each include a transmission unit and a reception unit.

  In the present invention, it is possible to detect a positional relationship with high accuracy by providing a transmitter and a receiver in both the power transfer on-vehicle device and the power transfer device, and further, for example, modulate electromagnetic waves with communication data. Thus, bidirectional communication between the power transfer in-vehicle device and the power transfer device can be realized.

  A power transfer device according to a ninth aspect of the present invention is a power transfer device that is disposed in a parking / stopping zone where a vehicle parks and stops and transfers AC power to / from the vehicle. A vehicle exterior position adjustment unit, and a vehicle exterior power transfer unit that forms a transformer that transmits AC power to and from the vehicle when the vehicle position adjustment unit adjusts the relative position with the vehicle. It is characterized by that.

  In this invention, it arrange | positions in the parking stop area where a vehicle is parked and stopped, and coordinates the parking / stopping position of the vehicle accurately by adjusting the relative position with the vehicle in cooperation with the vehicle. This can increase the feasibility and practicality, and can realize efficient power transfer.

  A power transfer in-vehicle device according to a tenth aspect of the present invention is an electric power transfer in-vehicle device that is mounted on a vehicle and transfers AC power to and from the power transfer device outside the vehicle. Adjustment of the relative position with the power transfer device Vehicle-mounted position adjustment unit required for the vehicle-mounted, and when the vehicle-mounted position adjustment unit adjusts the relative position of the power transfer device, the vehicle-mounted power that forms a transformer that transfers AC power to and from the power transfer device And a transfer unit.

  In the present invention, the positioning of the vehicle parking / stopping position is accurately determined by adjusting the relative position between the power transfer devices in cooperation with the power transfer device mounted on the vehicle and disposed in the parking / stopping area. Therefore, the feasibility and practicality can be improved, and efficient power transfer can be realized.

  The power transfer system, the power transfer device, and the power transfer vehicle-mounted device according to the present invention are linked with a vehicle equipped with the power transfer vehicle-mounted device and a power transfer device disposed in a parking and stopping area where the vehicle is parked and stopped. By adjusting the relative position between the power transfer in-vehicle device and the power transfer device, the power transfer in-vehicle device provided in the vehicle and the power transfer device form a transformer and are wound around one side forming the transformer By passing an alternating current through the coil, an electromotive force is induced in the coil wound around the other side.

  With this configuration, since the vehicle parking / stopping position is accurately determined, it is possible to improve the feasibility and practicality, and since the transformer is formed, it is possible to realize efficient power transfer. Etc. have excellent effects.

  In the present invention, by transferring AC power from the vehicle to the power transfer device, the vehicle can be used as a generator, and the power generated by the vehicle can be taken out from the power transfer device side. By transferring AC power to the vehicle, it is possible to charge a vehicle such as an electric vehicle by using the power transfer device, and thus an excellent effect can be obtained.

  Furthermore, the power transfer system and the like according to the present invention are configured such that, for example, a transmitter is disposed in a parking / parking area so that an electromagnetic wave such as light is transmitted upward, and a plurality of receivers are disposed on the lower surface of the vehicle. The position is detected based on the electromagnetic waves received by the receiving unit.

  With this configuration, the intensity of the electromagnetic wave received by the receiving unit is attenuated according to the distance from the transmitting unit, so that the ratio of the respective distances from each receiving unit to the transmitting unit can be derived. In addition, it is possible to detect the relative positions of each other and position the vehicle in the horizontal direction.

  In the present invention, it is possible to realize data communication between the vehicle and the power transfer device by converting communication data into electromagnetic waves and transmitting the electromagnetic waves by a method such as modulation, and converting the received electromagnetic waves into communication data. In addition, by providing a transmitter and a receiver in both the vehicle and the power transfer device, it is possible not only to further improve the position detection accuracy, but also to realize bidirectional communication between the vehicle and the power transfer device. There are excellent effects.

  Further, in the power transfer system and the like according to the present invention, after positioning the vehicle in the horizontal direction, the power transfer device moves the outside power transfer unit by the drive unit, for example, drives it up and down, and positions the positioning unit such as a pressure switch. Therefore, by positioning the vehicle power transfer unit in the vertical direction, the vehicle power transfer unit can be accurately positioned, so that it is possible to improve the feasibility and practicality. Play.

  In the present invention, one coil side superimposes communication data having a frequency higher than the AC power to be transferred on the AC power to be transferred, and on the other coil side, the communication data is separated from the AC power. There are excellent effects such as that it is possible to realize power line communication in which data communication is performed using power lines between transfer devices.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is an explanatory diagram showing an example of an outline of the power transfer system of the present invention. Reference numeral 1 in FIG. 1 denotes a vehicle such as an electric vehicle using an electric engine, a gasoline vehicle using a gasoline engine, a hybrid vehicle using both an electric engine and a gasoline engine, and the vehicle 1 has a power transfer according to the present invention. An in-vehicle device 10 is mounted. The vehicle 1 can be parked and parked in a parking area 2 such as a public or private parking lot or a parking area of an energy replenishment station, and the power transfer device 20 of the present invention is arranged in the parking area 2. It is installed. When the vehicle 1 parks in the parking / stopping zone 2, AC power can be transferred between the vehicle 1 and the power transfer device 20.

  FIG. 2 is an explanatory diagram showing an example of an outline during power transfer of the power transfer system of the present invention. FIG. 2 conceptually shows a state in which the vehicle 1 parks and parks in a parked and parked area and transfers AC power. When the vehicle 1 parks in the parking area, the power transfer in-vehicle device 10 mounted on the vehicle 1 and the power transfer device 20 disposed in the parking area 2 form a transformer, and power can be transferred. Become. In the example illustrated in FIG. 2, the power transfer device 20 is connected to the power management device 3 disposed in a house through a power line. The power management device 3 receives supply of AC power from an AC power source such as a household power source or a commercial power source, and transfers AC power to the vehicle 1 via the power transfer device 20, that is, charges. In addition to transferring AC power from the power transfer device 20 to the vehicle 1, it is also possible to transfer the vehicle 1 to the power transfer device 20 using the vehicle 1 as an AC generator.

  Further, in order to form a transformer between the vehicle 1 and the power transfer device 20, it is necessary to adjust the parking / stopping position of the vehicle 1 with high accuracy. A position adjustment mechanism that detects a general positional relationship and adjusts the position based on the detected relative position is provided.

  FIG. 3 is an external view schematically showing an example of the power transfer vehicle-mounted device 10 and the power transfer device 20 of the vehicle 1 in the power transfer system of the present invention. FIG. 3A is an external view schematically showing the lower surface of the vehicle 1, and the upper part of FIG. 3 corresponds to the front of the vehicle 1. A power transfer vehicle-mounted device 10 is mounted on the rear part of the vehicle 1, and the power transfer vehicle-mounted device 10 is arranged in the left-right direction of the vehicle-mounted power transfer mechanism 11 that forms a transformer with the power transfer device 20. An on-vehicle position adjustment mechanism 12 is provided.

  FIG. 3B is an external view schematically showing the upper surface of the power transfer device 20. The power transfer device 20 includes an on-board power transfer mechanism 11 of the vehicle 1 and an off-vehicle power transfer mechanism 21 that forms a transformer, and an off-vehicle position adjustment mechanism 22 disposed in the left-right direction of the off-vehicle power transfer mechanism 21 in the drawing. . The in-vehicle power transfer mechanism 11 and the power transfer device 20 provided in the vehicle 1 are arranged by stopping the vehicle 1 so that the in-vehicle position adjustment mechanism 12 provided in the vehicle 1 and the out-of-vehicle position adjustment mechanism 22 provided in the power transfer device 20 are opposed to each other. The positions in the horizontal direction of the external power transfer mechanism 21 provided are opposite to each other.

  FIG. 4 is an explanatory diagram schematically illustrating an example of sensors of the in-vehicle position adjusting mechanism 12 included in the vehicle 1 and the out-of-vehicle position adjusting mechanism 22 included in the power transfer device 20 in the power transfer system of the present invention. FIG. 4A shows an in-vehicle position adjusting mechanism 12 disposed in a power transfer in-vehicle device 10 provided in the vehicle 1, and an LED (Light Emitting) that emits light as an electromagnetic wave is on the left side in the figure. A transmitter 121 such as a diode is disposed, and a plurality of receivers 122 such as a PD (photo diode) that receives light as an electromagnetic wave is disposed on the right side.

  FIG. 4B shows a vehicle exterior position adjusting mechanism 22 disposed in the power transfer device 20, and a plurality of receiving units 221 such as PDs for receiving electromagnetic waves are disposed on the left side in the drawing. On the right side, a transmitter 222 such as an LED that transmits electromagnetic waves is disposed.

  The electromagnetic wave transmitted from the transmission unit 121 on the vehicle 1 side is received by the plurality of reception units 221 on the power transfer device 20 side, and based on the intensity of the electromagnetic wave received by each reception unit 221, the vehicle exterior position adjustment mechanism 22. Detects the relative positional relationship between the vehicle 1 and the power transfer device 20. As shown in FIG. 4B, the receiving units 221 are arranged in a 3 × 3 matrix. Since the electromagnetic wave received by the receiving unit 221 is attenuated according to the distance from the transmitting unit 121, the distance from each receiving unit 221 to the transmitting unit 121 based on the intensity of the electromagnetic wave received by each receiving unit 221. The relative positional relationship between the transmitting unit 121 and the receiving unit 221 can be detected with high accuracy based on the derived distance ratio. Based on the detected positional relationship, the mutual position is adjusted so that the receiving unit 221 disposed at the center of the matrix faces the transmitting unit 121.

  The electromagnetic waves transmitted from the transmission unit 222 on the power transfer device 20 side are received by the plurality of reception units 122 on the vehicle 1 side, and the in-vehicle position adjustment mechanism 12 is based on the intensity of the electromagnetic waves received by the respective reception units 122. Detects the relative positional relationship between the vehicle and the power transfer device 20. As shown in FIG. 4A, the receiving units 122 are arranged in a 3 × 3 matrix, and the relative relationship between the transmitting unit 222 and the receiving unit 122 is based on the intensity of electromagnetic waves received by each receiving unit 122. It is possible to detect a simple positional relationship. Based on the detected positional relationship, the mutual position is adjusted so that the receiving unit 122 arranged in the center of the matrix faces the transmitting unit 222.

  The horizontal direction of the vehicle 1 relative to the power transfer device 20 is adjusted by adjusting the position of the vehicle 1 and / or the power transfer device 20 in order to adjust the positional relationship between the transmission unit 121 and the reception unit 221, and the transmission unit 222 and the reception unit 122. The position of is fixed. As a procedure for adjusting the position, for example, the vehicle 1 and / or the power transfer device 20 is configured such that the electromagnetic wave transmitted from the transmission unit 121 has the maximum intensity at the reception unit 221 disposed in the center of the matrix. 4 is moved in parallel in the X-axis direction and the Y-axis direction, and thereafter, the position of the transmitting unit 222 and the receiving unit 122 is adjusted by performing a rotational movement with a line connecting the receiving unit 221 and the transmitting unit 121 as a rotation axis. .

  FIG. 5 is a block diagram illustrating a configuration example of the in-vehicle position adjusting mechanism 12 included in the vehicle 1 in the power transfer system of the present invention. The in-vehicle position adjustment mechanism 12 includes a transmission unit 121 and a reception unit 122, and further includes a detection unit 123 that detects the relative position of the power transfer device 20 based on the intensity of electromagnetic waves received by the reception unit 122, and a detection unit 123. An adjustment unit 124 that adjusts the position of the vehicle 1 based on the detected position and a data communication circuit 125 are provided. The adjusting unit 124 calculates, for example, the steering direction and the driving direction of the vehicle 1, generates a control signal for controlling the steering system and the driving system based on the calculated result, and outputs information that prompts the driver to adjust the position. Perform the process.

  Furthermore, the transmission unit 121 included in the in-vehicle position adjustment mechanism 12 includes an encoding circuit 121a that converts communication data to be transmitted to the power transfer device 20 into electromagnetic waves, and the reception unit 122 receives the electromagnetic waves received from the power transfer device 20 as communication data. There is provided a decoding circuit 122a for converting into The encoding circuit 121a has a function of opening / closing a circuit for transmitting electromagnetic waves and adjusting the intensity of the transmitted electromagnetic waves based on communication data that is digital data, and processes such as adjustment and modulation of the transmission timing of the electromagnetic waves Therefore, it has a function to superimpose communication data substantially on the electromagnetic wave to be transmitted. The decode circuit 122a has a function of decoding communication data from changes in the reception interval and strength of electromagnetic waves, and has a function of substantially extracting communication data from received electromagnetic waves. That is, it is possible to perform bidirectional communication in which communication data is transmitted from the data communication circuit 125 via the transmitter 121 and the data communication circuit 125 receives the communication data received by the receiver 122.

  FIG. 6 is a block diagram illustrating a configuration example of the outside-vehicle position adjusting mechanism 22 included in the power transfer device 20 in the power transfer system of the present invention. The outside position adjustment mechanism 22 includes a receiving unit 221 and a transmitting unit 222, and further includes a detecting unit 223 that detects the relative position of the power transfer device 20 based on the intensity of electromagnetic waves received by the receiving unit 221, and a detecting unit 223 includes An adjustment unit 224 that adjusts the position of the external power transfer mechanism 21 based on the detected position, and a data communication circuit 225 are provided. The adjustment unit 224 performs processing such as transmission of a control signal for controlling a mechanism that translates and rotates the external power transfer mechanism 21 in the horizontal direction, for example.

  Furthermore, the receiving unit 221 included in the outside position adjustment mechanism 22 includes a decoding circuit 221a that converts electromagnetic waves received from the vehicle 1 into communication data, and the transmitting unit 222 encodes communication data to be transmitted to the vehicle 1 into electromagnetic waves. A circuit 222a is provided. Then, it is possible to realize bidirectional communication in which the data communication circuit 225 receives the communication data received by the reception unit 221 and transmits the communication data from the data communication circuit 225 via the transmission unit 222.

  Note that both the vehicle 1 and the power transfer device 20 do not perform the process of adjusting the position, but only one of them may perform the adjustment, or the adjustment is performed based on the information or position indicating the detected position. For this purpose, the information may be transmitted and received as communication data.

  FIG. 7 is an explanatory diagram schematically showing an example of a position adjustment mechanism of the power transfer device 20 in the power transfer system of the present invention. The power transfer device 20 includes a drive mechanism 23 that adjusts the position of the external power transfer mechanism 21. The drive mechanism 23 is a parallel drive unit 231 that translates the external power transfer mechanism 21 in the horizontal direction, and rotates in the horizontal direction. And a vertical drive unit 233 that moves in the vertical direction. A positioning unit 211 such as a pressure switch that stops the ascending operation by the vertical drive unit 233 by contacting the vehicle 1 is disposed on the vehicle 1 side of the external power transfer mechanism 21.

  The parallel drive unit 231 and the rotation drive unit 232 drive the external power transfer mechanism 21 based on, for example, a control signal transmitted from the adjustment unit 214 and perform horizontal positioning. After the positioning in the horizontal direction is completed, the external power transfer mechanism 21 is raised by the vertical drive unit 233, and when the positioning unit 211 comes into contact with the vehicle 1, the ascent of the external power transfer mechanism 21 is stopped and the vertical positioning is performed. Done.

  FIG. 8 is a block diagram schematically showing a configuration example relating to power transfer of the power transfer system of the present invention. By the positioning of the external power transfer mechanism 21 included in the power transfer device 20 by the above-described method, the in-vehicle power transfer mechanism 11 included in the vehicle 1 and the external power transfer mechanism 21 included in the power transfer device 2 approach or come into contact with each other. To form a trans. The in-vehicle power transfer mechanism 11 provided in the vehicle 1 and the external power transfer mechanism 21 provided in the power transfer device 2 each have a U shape, and a transformer formed by adjoining or abutting the core has an O shape. Form. Coils 111 and 212 are wound around an in-vehicle power transfer mechanism 11 provided in the vehicle 1 and an external power transfer mechanism 21 provided in the power transfer device 2, respectively, one being a primary coil and the other being a secondary coil. . For example, when an alternating current is passed through the coil 212 wound around the external power transfer mechanism 21 included in the power transfer device 2, the coil 212 becomes a primary coil, and the coil wound around the in-vehicle power transfer mechanism 11 that is a secondary coil. An electromotive force is induced in 111.

  Furthermore, the in-vehicle power transfer mechanism 11 provided in the vehicle 1 is connected to a converter 13 having a rectifier 131 that converts alternating current to direct current and an inverter 132 that converts direct current to alternating current. It is connected to a secondary battery 14 such as a lead storage battery. When the in-vehicle power transfer mechanism 11 receives AC power transfer by electromagnetic induction, the rectifier 131 of the converter 13 converts the transferred AC power into DC power, and the converted DC power is used for the secondary battery 14. Charge the battery. Further, the DC power discharged from the secondary battery 14 is converted into AC power by the inverter 132 of the converter 13 and supplied to the in-vehicle power transfer mechanism 11.

  A generator 15 is connected to the converter 13 via a rectifier 151. The AC power generated by the generator 15 is converted into DC power by the rectifier 151 and supplied to the converter 13. Note that AC power may be supplied from the generator 15 to the in-vehicle power transfer mechanism 11.

  Furthermore, the power transfer device 2 provided in the power transfer device 2 is connected to the power management device 3, transfers AC power to the power management device 3, and receives AC power transferred from the power management device 3. Note that a converter having a rectifier and an inverter may be connected to the external power transfer mechanism 21 to transfer DC power between the power transfer device 2 and the power management device 3.

  FIG. 9 is a block diagram showing a configuration example relating to the power line communication mechanism of the vehicle 1 in the power transfer system of the present invention. The vehicle 1 includes a power line communication mechanism 16 that is connected to a power line PL that connects the in-vehicle power transfer mechanism 11 and the conversion unit 13 and performs power line communication (PLC). The power line communication mechanism 16 includes a coupling circuit 161 that is connected to the power line PL via a branch line, a transceiver 162, and a data communication circuit 163. In the power line communication PL, a low-pass filter LPF that transmits low-frequency AC power such as 50 Hz and 60 Hz and blocks high-frequency communication data is disposed on the conversion unit 13 side from the branch point where the branch line branches. Yes.

  The coupling circuit 161 is a high-pass filter that cuts off low-frequency AC power and passes a high-frequency signal in a signal band (2 to 30 MHz) of communication data to be transmitted and received between the power line PL and the power line PL. In addition to passing high-frequency communication data, coupling such as impedance matching with the power line PL is performed. The transceiver 162 is a circuit that modulates and demodulates communication data at a frequency in the signal band of communication data, and has a communication data relay function between the coupling circuit 161 and the data communication circuit 163. The data communication circuit 163 transmits and receives communication data via the transceiver 162.

  When the AC power is transferred from the vehicle 1 to the power transfer device 20, the power line communication mechanism 16 configured as described above superimposes communication data having a frequency higher than the AC power to be transferred on the AC power to be transferred. When transferring AC power from the power transfer device 20 to the vehicle 1, the power line communication mechanism 16 separates communication data from the transferred AC power.

  FIG. 10 is a block diagram illustrating a configuration example relating to the power line communication mechanism of the power transfer device 20 in the power transfer system of the present invention. The power transfer device 20 includes a power line communication mechanism 24 that is connected to a power line PL that connects the external power transfer mechanism 21 and the power management device 3 and performs power line communication. The power line communication mechanism 24 includes a coupling circuit 241 that is connected to the power line PL via a branch line, a transceiver 242, and a data communication circuit 243. In the power line communication PL, a low-pass filter LPF that transmits low-frequency AC power such as 50 Hz and 60 Hz and blocks high-frequency communication data is disposed on the power management device 3 side from the branch point where the branch line branches. ing.

  The coupling circuit 241 is a high-pass filter that cuts off low-frequency AC power and passes a high-frequency signal in the signal band (2 to 30 MHz) of communication data to be transmitted and received between the power line PL and the power line PL. In addition to passing high-frequency communication data, coupling such as impedance matching with the power line PL is performed. The transceiver 242 is a circuit that modulates and demodulates communication data at the frequency of the communication data signal band, and has a communication data relay function between the coupling circuit 241 and the data communication circuit 243. The data communication circuit 243 transmits / receives communication data via the transceiver 242.

  When the AC power is transferred from the power transfer device 20 to the vehicle 1, the power line communication mechanism 24 configured as described above superimposes the AC power to be transferred with communication data having a frequency higher than the AC power to be transferred. When AC power is transferred from the vehicle 1 to the power transfer device 2, the power line communication mechanism 24 separates communication data from the transferred AC power. The power line communication mechanism 24 may be incorporated in the power management apparatus 3.

  As described above in detail, in the power transfer system of the present invention, when the vehicle 1 is parked in the parking / stopping zone 2, the power transfer in-vehicle device 10 provided in the vehicle 1 and the power transfer device 20 form a transformer, Efficient power transfer such as charging of the vehicle 1 can be performed. As a positioning method for forming the transformer, the horizontal direction is performed by the in-vehicle position adjusting mechanism 12 and the outside position adjusting mechanism 22 that transmit and receive electromagnetic waves such as light, and the vertical direction is determined by the power transfer device 20. This is performed by a positioning part 211 such as a pressure switch provided. Moreover, the vehicle-mounted position adjustment mechanism 12 provided in the vehicle 1 and the vehicle-outside position adjustment mechanism 22 provided in the power transfer apparatus 20 have not only positioning but also a bidirectional communication function, and the vehicle-mounted power transfer mechanism 11 provided in the vehicle 1 and When the external power transfer mechanism 21 included in the power transfer device 2 forms a transformer, communication by power line communication can be performed.

  In such a power transfer system of the present invention, for example, when the power transfer device 20 is disposed in the parking / parking area 2 such as a parking lot for general households, when the parking is performed in the parking / parking area 2, only charging of the vehicle 1 is performed. Not only various ECUs (Electric Control Units) that constitute in-vehicle LANs such as navigation systems and audio-visual systems mounted in the vehicle 1, and various electronic devices such as personal computers and audio-visual systems that constitute home networks in the house. Can be connected to transmit and receive various types of information such as navigation data, music data, and video data.

  In addition, for example, when the power transfer device 20 is disposed in the parking / stopping area 2 such as the stoppage location of the energy supply station, when the vehicle is stopped in the parking / stopping area 2, not only charging the vehicle 1 but also the energy supply station is provided. Various information such as service information, traffic information, and regional information can be transmitted and received.

  In the above-described embodiment, the on-vehicle position adjusting mechanism is disposed on the lower surface of the rear portion of the vehicle. However, the present invention is not limited to this, and may be disposed at other positions such as the lower surface of the front portion of the vehicle. Alternatively, it may be arranged at a position other than the lower surface such as the side portion of the vehicle. Also, the on-vehicle power transfer mechanism can be developed in various forms, such as being arranged at a position other than the lower surface such as the side of the vehicle.

It is explanatory drawing which shows an example of the outline | summary of the power transmission system of this invention. It is explanatory drawing which shows an example of the outline | summary at the time of the power transfer of the power transfer system of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows typically an example of the electric power transmission vehicle-mounted apparatus and electric power transfer apparatus of the vehicle in the electric power transfer system of this invention. It is explanatory drawing which shows typically an example of the sensor of the vehicle-mounted position adjustment mechanism with which the vehicle in the electric power transfer system of this invention is equipped, and the vehicle outside position adjustment mechanism with which an electric power transmission apparatus is provided. It is a block diagram which shows the structural example of the vehicle-mounted position adjustment mechanism with which the vehicle in the electric power transfer system of this invention is provided. It is a block diagram which shows the structural example of the vehicle outside position adjustment mechanism with which the power transmission apparatus in the power transmission system of this invention is provided. It is explanatory drawing which shows typically an example of the position adjustment mechanism of the power transfer apparatus in the power transfer system of this invention. It is a block diagram which shows typically the structural example regarding the power transfer of the power transfer system of this invention. It is a block diagram which shows the structural example regarding the power line communication mechanism of the vehicle in the electric power transmission system of this invention. It is a block diagram which shows the structural example regarding the power line communication mechanism of the power transfer apparatus in the power transfer system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 10 Power transfer vehicle-mounted apparatus 11 Vehicle power transfer mechanism 111 Coil 12 Vehicle-mounted position adjustment mechanism 121 Transmission part 121a Encoding circuit 122 Reception part 122a Decoding circuit 123 Detection part 124 Adjustment part 125 Data communication circuit 13 Conversion part 131 Rectifier 132 Inverter 14 Two Secondary battery 15 Generator 151 Rectifier 2 Parking / stopping zone 20 Power transfer device 21 Outside vehicle power transfer mechanism 22 Outside vehicle position adjustment mechanism 212 Coil 221 Reception unit 221a Decoding circuit 222 Transmission unit 222a Encoding circuit 223 Detection unit 224 Adjustment unit 225 Data communication circuit 23 Drive mechanism 231 Parallel drive unit 232 Rotation drive unit 233 Vertical drive unit 3 Power management device

Claims (10)

A power transfer that includes a vehicle including a power transfer vehicle-mounted device and a power transfer device disposed in a parking and stopping area where the vehicle is parked and stopped, and transfers AC power between the power transfer vehicle-mounted device and the power transfer device. In the system,
The power transfer in-vehicle device is:
An in-vehicle power transfer unit for transferring AC power;
An in-vehicle position adjustment unit required for adjusting the relative position with the power transfer device,
The power transfer device
An external power transfer unit that transfers AC power;
A vehicle exterior position adjustment unit required for adjusting the relative position with the power transfer vehicle-mounted device,
When the in-vehicle position adjustment unit and the out-of-vehicle position adjustment unit adjust the relative positions of the power transfer in-vehicle device and the power transfer device,
AC power is transferred between the in-vehicle power transfer unit and the out-of-vehicle power transfer unit. The in-vehicle power transfer unit included in the power transfer in-vehicle device is disposed in the lower part of the vehicle,
The power transfer device
A drive unit for moving the external power transfer unit;
The power transfer system according to claim 1, further comprising: a positioning unit that determines a stop position of the moving external power transfer unit by contacting the vehicle.   The in-vehicle power transfer unit and the off-vehicle power transfer unit each have a coil, and are configured to form a transformer by bringing both power transfer units close to or in contact with each other. The power transfer system according to claim 2. One of the power transfer in-vehicle device and the power transfer device further includes a superimposition unit that superimposes communication data having a frequency higher than the AC power to be transferred on the AC power to be transferred,
4. The power transfer system according to claim 3, wherein the other of the power transfer in-vehicle device and the power transfer device further includes a separation unit that separates communication data from AC power. One of the in-vehicle position adjustment unit and the outside position adjustment unit is
It has a transmitter that transmits electromagnetic waves,
The other of the in-vehicle position adjusting unit and the outside position adjusting unit is
A receiving unit that receives electromagnetic waves transmitted from one side;
The power transfer system according to claim 1, further comprising: a detecting unit that detects a position based on the received electromagnetic wave. With multiple receivers,
The power transfer system according to claim 5, wherein the detection unit is configured to detect a position based on electromagnetic waves received by a plurality of reception units. The transmitting unit includes means for converting communication data into electromagnetic waves,
The power transfer system according to claim 5 or 6, wherein the reception unit includes means for converting received electromagnetic waves into communication data.   The power transfer system according to any one of claims 5 to 7, wherein the in-vehicle position adjustment unit and the outside vehicle position adjustment unit each include a transmission unit and a reception unit. In a power transfer device that is disposed in a parking and stopping area where a vehicle parks and transfers AC power to and from the vehicle,
An outside position adjustment unit required for adjusting the relative position with the vehicle;
When the outside position adjustment unit adjusts the position relative to the vehicle,
A power transfer device comprising: an off-vehicle power transfer unit that forms a transformer that transfers AC power to and from the vehicle. In a power transfer vehicle-mounted device mounted on a vehicle and transferring AC power to and from a power transfer device outside the vehicle,
An on-vehicle position adjustment unit required for adjustment of the relative position with the power transfer device;
When the on-vehicle position adjustment unit adjusts the relative position with the power transfer device,
An on-vehicle power transfer unit that forms a transformer that transfers AC power to and from the power transfer device.

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