JP2010226945A - Power supply system of mobile unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To readily make the driver of a mobile object (vehicle) directly face a power-receiving portion of the side of the vehicle to a power-feeding portion of the side of a road, when the driver moves the vehicle, in a system such that power feeding to the vehicle is performed in a non-contact manner. <P>SOLUTION: In the system, a power-receiving portion 21 for receiving the power feeding of a vehicle 2 from a power-feeding portion 31 embedded in the road surface of a parking space 3 by an electromagnetic induction, is provided in the bottom surface a vehicle. Also, it is required that for efficiently performing the power feeding from the power-feeding portion 31 to the power-receiving portion 21, these respective portions directly face each other; and when doing so, a position-determining marker 18 is disposed in the rear portion of the parking space 3; and when the driver of the vehicle 2 parks the vehicle 2 in the parking space 3, the position-determining marker 18 is photographed by a camera 17, and the vehicle is induced to an optimal position, by indicating the photographed picture in an indicating portion 8 on the side of the vehicle 2. Furthermore, when a reference-position signal is transmitted from a signal transmitting portion 37b and the reference-position signal can be received in a signal-receiving portion 28b, power feeding to the vehicle is initiated by transmitting a charge desiring signal from the side of the vehicle 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power supply system that performs non-contact power supply to a moving body.

  In general, an electric vehicle as a representative example of a moving body is configured such that when charging a battery provided in the electric vehicle, the connector of the charger cable is connected to the electric vehicle in a facility provided with the charger. It was necessary to insert the battery into the connector provided for charging, and the trouble for that was troublesome.

  Therefore, conventionally, a primary coil is provided on a vehicle base that can park an automobile, and a secondary coil that receives power from the primary coil by electromagnetic induction on the automobile side, and a charging means that charges the battery with the received power from the secondary coil. And a non-contact type power supply system configured to automatically start charging the battery when the automobile is parked on the vehicle stand has been proposed (see, for example, Patent Document 1). .

  Further, in this proposed power supply system, in order to be able to automatically start power supply when the automobile is parked at a predetermined position on the vehicle base, weights are provided at four locations corresponding to the tires of the automobile on the vehicle base. When a vehicle is detected by the vehicle detection unit, the vehicle detection unit is configured to perform communication for starting power supply between the vehicle side device and the vehicle side device, and from the vehicle side to the vehicle. The power supply is started.

  Therefore, according to the proposed power supply system, for example, a vehicle stand provided with a primary coil and a weight sensor is installed in a parking space of the vehicle, such as parking, and a car is parked on the vehicle stand. For example, since the battery mounted on the automobile can be automatically charged, there is no need for preparation for the charging and the convenience is good.

JP-A-8-126120

  By the way, since the proposed power supply system is configured to generate power for battery charging on the secondary coil side by electromagnetic induction between the primary coil and the secondary coil, the battery is efficiently charged. Therefore, when the automobile is parked on the vehicle base, it is necessary to make the primary coil provided on the vehicle base and the secondary coil provided on the bottom surface of the automobile face each other.

  However, since the driver of the automobile cannot check the position of each of these coils at the time of parking, it is difficult to stop the automobile so that the primary coil and the secondary coil face each other.

For this reason, in the said prior art, depending on the method of parking of a motor vehicle, the primary coil and the secondary coil did not face each other, and there were cases where the battery could not be charged efficiently.
In order to prevent this problem, by narrowing the detection range of the weight sensor that constitutes the vehicle detection unit, the position detection accuracy of the automobile is increased, and the detection result by each weight sensor is notified to the driver. It is also possible to let the driver correct the parking position of the car.

  However, since the position of the tire of an automobile differs depending on the type of automobile, it is difficult to detect that the primary coil and the secondary coil are facing each other with the four weight sensors provided on the vehicle base.

  In addition, in order to prevent this problem, even if the types of cars parked on the vehicle base are limited, it takes time for the driver to correct the parking position of the car according to the detection result of each weight sensor. It becomes a system that is not easy to use for those who use it.

  The present invention has been made in view of such problems, and in a power supply system that performs power supply to a moving body in a non-contact manner, the driver moves the moving body and places the moving body on a mounting table such as a vehicle base. It is an object of the present invention to make it possible to easily face the power feeding means provided on the mounting table and the power receiving means provided on the moving body when mounting.

The invention according to claim 1, which has been made to achieve the object,
A power supply device provided with a power supply unit that is provided on a mounting table on which the moving body can be mounted and that supplies power to the moving body mounted on the mounting table in a contactless manner;
Provided in the movable body that can be placed on the mounting table, charging means for charging the power storage means mounted on the moving body, and when the moving body is placed on the mounting table, the power supply A power receiving device comprising: a power receiving means for receiving power from the means in a non-contact manner and supplying the received power to the charging means;
In a mobile power supply system comprising:
On the mounting table side, a guiding unit for guiding the moving body to an optimum position optimal for supplying power from the power feeding unit to the power receiving unit is disposed,
Guidance that guides the driver to move the moving body to the optimum position by detecting the guiding means arranged on the mounting table and notifying the driver of the detection result. Means is provided.

The invention described in claim 2 is the mobile power supply system according to claim 1,
The power receiving device is:
Power-receiving-side communication means for performing wireless communication with the power supply device;
When charging to the power storage means is necessary, a power receiving side control means for transmitting a charge request signal from the power receiving side communication means;
With
The power supply device
Power supply side communication means for performing wireless communication with the power receiving device;
When the charging request signal is received by the power supply side communication means, power supply side control means for starting power supply from the power supply means to the power reception means;
It is provided with.

Next, the invention according to claim 3 is the mobile power supply system according to claim 2,
The power supply side control means transmits a reference position signal from the power supply side communication means,
The power receiving side control means permits transmission of the charge request signal when the power receiving side communication means receives the reference position signal, and the power receiving side communication means receives the reference position signal. Otherwise, transmission of the charge request signal is prohibited.

According to a fourth aspect of the present invention, in the mobile power supply system according to the second or third aspect,
The power receiving device is provided with a stop state detecting means for detecting a stop state of movement of the moving body,
The power receiving side control means permits transmission of the charge request signal when the movement stop state of the moving body is detected by the stop state detection means, and the stop state of the moving body is allowed by the stop state detection means. If not detected, transmission of the charge request signal is prohibited.

Still further, the invention according to claim 5 is the power supply system for a mobile body according to claim 3 or 4,
The power supply device
A power feeding side movable means for moving the power feeding means between a first position stored in the mounting table and a second position approaching a bottom surface of the moving body mounted on the mounting table;
The power supply side control means moves the power supply means from the first position to the second position via the power supply side movable means when the charge request signal is received by the power supply side communication means. The power supply from the power feeding unit to the power receiving unit is started.

The invention described in claim 6 is the mobile power supply system according to claim 5,
The power receiving device includes a received power detection unit that detects a magnitude of received power output from the power receiving unit to the charging unit,
The power receiving side control means is configured to transmit the detection result of the received power by the received power detection means in addition to the charge request signal via the power receiving side communication means,
The power feeding side movable means is configured to be able to move the power feeding means in a surface direction along a surface facing the power receiving means,
When the power feeding side control unit starts feeding power from the power feeding unit to the power receiving unit, the power feeding side control unit receives the power feeding side communication unit while moving the power feeding unit in the surface direction via the movable unit. A position where the received power is maximized is detected based on a detection result of the received power, and the movement of the power supply unit is stopped at the detected position.

On the other hand, the invention according to claim 7 is the power supply system of the mobile body according to claim 3 or 4,
The power receiving device is:
A power receiving side movable means for moving the power receiving means between a first position housed in the moving body and a second position protruding from the bottom surface of the moving body toward the mounting table;
When the transmission of the desired charging signal is permitted, the power receiving side control unit starts transmission of the charging desired signal and moves the power receiving unit from the first position to the second position via the power receiving side movable unit. It is moved to a position.

The invention according to claim 8 is the power supply system for a mobile body according to claim 7,
The power receiving device includes a received power detection unit that detects a magnitude of received power output from the power receiving unit to the charging unit,
The power receiving side movable means is configured to be able to move the power receiving means also in a surface direction along a surface facing the power feeding means,
The power receiving side control means moves the power receiving means from the first position to the second position via the power receiving side movable means, and then moves the power receiving means in the surface direction via the power receiving side movable means. While moving, the position where the received power detected by the received power detection means becomes maximum is detected, and the movement of the power receiving means is stopped at the detected position.

  In the power supply system according to claim 1, the mobile unit on which the power supply device is provided is moved to a mounting base side to an optimum position optimal for supplying power from the power supply unit of the mounting base to the power receiving unit of the mobile unit. Guiding means for guiding the body is arranged.

  The power receiving apparatus of the moving body is provided with a guiding means for guiding the driver to move the moving body to the optimum position by detecting the guiding means and notifying the driver of the detection result. It has been.

  For this reason, according to the power supply system of the first aspect, when the driver moves the moving body and stops it on the mounting table, the power feeding means and the power receiving means face each other and are optimal for supplying power. The moving body can be guided through the guide means so as to be in the optimum position.

  Therefore, the driver can stop the moving body at the optimum position on the mounting table even if the relative position between the power feeding means and the power receiving means cannot be confirmed, and then when power supply is started, It becomes possible to efficiently supply power from the power feeding means to the power receiving means.

  In addition, since the efficiency of power supply can be increased, energy saving of the power supply system can be achieved. In addition, variations in time required for charging the power storage means can be eliminated, and the charging time can be shortened.

  By the way, for the start of power supply from the power supply means to the power reception means, for example, an operation switch for instructing the start of power supply is provided on the mounting table side (in other words, the power supply device side). The driver may stop the moving body on the mounting table, and then operate the operation switch to start the power supply from the power supply means to the power reception means.

However, this makes it impossible to start charging the power storage means while the driver is on the moving body, which is inconvenient.
Therefore, as described in claim 2, the power receiving device on the moving body side is provided with power receiving side communication means and power receiving side control means, and the power supply device on the mounting table side is provided with power feeding side communication means and power feeding side control means. It is good to provide.

  That is, in the power supply system according to claim 2, when the power receiving device needs to charge the power storage unit, the power receiving side control unit causes the power receiving side communication unit to transmit a charge request signal, On the power supply device side, when the charge request signal is received by the power supply side communication means, the power supply side control means starts to supply power from the power supply means to the power reception means.

  Therefore, according to the power supply system of the second aspect, when the moving body is mounted on the mounting table and the power supply side communication means receives the power reception request signal from the power reception side communication means, the power supply means to the power reception means. Therefore, the driver of the moving body can charge the power storage means only by moving the moving body onto the mounting table.

  On the other hand, when the power supply is automatically started by transmission / reception of the power reception desired signal as described above, the mobile body is not stopped at the optimum position if the charge desired signal is always transmitted from the power receiving side communication means. Thus, it is conceivable that power supply from the power supply means to the power reception means is started.

  Therefore, as in the power supply system according to claim 3, the power supply side control means causes the reference position signal to be transmitted from the power supply side communication means, and on the power reception side control means side, the reference position signal is received by the power reception side communication means. When the signal is normally received, the transmission of the charge request signal is permitted, and if the reference position signal is not received by the power receiving side communication means, the transmission of the charge request signal may be prohibited.

  That is, in this way, only when the reference position signal can be normally received by the power receiving side communication means, the power receiving side signal is transmitted from the power receiving side communication means to the power feeding side communication means, and the power feeding means receives the power. When the mobile body is deviated from the optimal position and the reference signal cannot be normally obtained by the power receiving side communication means, a charge request signal is transmitted from the power receiving side communication means, It is possible to prevent the power supply from starting.

In order to efficiently supply power, it is desirable to prohibit power supply when the moving body is moving.
For this reason, as described in claim 4, the power receiving device on the mobile body side is provided with stop state detection means for detecting the movement stop state of the mobile body, and the power reception side control means is the stop state detection means. When the movement stop state of the moving body is detected, the transmission of the charge request signal is permitted. When the stop state of the moving body is not detected by the stop state detecting means, the transmission of the charge request signal is prohibited. Good.

  In this way, only when the moving body is stopped at the optimum position, a power reception request signal is transmitted from the power reception side communication means to the power supply side communication means, and the power supply means supplies power to the power reception means. Thus, the power supply can be performed more efficiently. According to the power supply system of the fourth aspect, since the power is supplied from the power supply means to the power reception means only when the moving body is stopped, safety can be improved.

  By the way, according to the power feeding system of the present invention (Claims 1 to 4), the mobile body can be moved to the optimum position as described above, and power can be supplied from the power feeding means to the power receiving means. Since there is a space between the power supply means provided on the mounting table and the power reception means provided on the moving body, the efficiency of power supply may be reduced due to the space.

  For this reason, when supplying electric power from the power supply means to the power reception means, it is desirable to narrow these intervals. For this purpose, as in the power supply system according to claim 5 or 7, The apparatus or the power receiving apparatus may be provided with a movable means for moving the power feeding means or the power receiving means, and when supplying power from the power feeding means to the power receiving means, these intervals may be configured to be narrow.

  That is, in the power supply system according to claim 5, in the power supply device, the power supply means includes a first position stored in the mounting table and a second position approaching the bottom surface of the moving body mounted on the mounting table. Power supply side movable means for moving between the two is provided.

  When the charging request signal is received by the power supply side communication means, the power supply side control means moves the power supply means from the first position to the second position via the power supply side movable means, and then from the power supply means. Power supply to the power receiving means is started.

For this reason, when power is supplied from the power supply means to the power reception means, the power supply means is moved to the moving body side, the interval between the power supply means and the power reception means is narrowed, and the efficiency of power supply can be improved.
In the power supply system according to claim 7, in the power receiving device, the power receiving unit includes a first position where the power receiving unit is housed in the moving body, and a second position which protrudes from the bottom surface of the moving body toward the mounting table. Power-receiving-side movable means for moving between the two is provided.

  Then, when transmission of the charge request signal is permitted, the power reception side control means starts transmission of the charge request signal and moves the power reception means from the first position to the second position via the power reception side movable means. .

For this reason, when power is supplied from the power supply means to the power reception means, the power reception means is moved to the mounting table side, and the interval between the power supply means and the power reception means is narrowed, so that the efficiency of power supply can be improved.
Next, as described in claim 5 or claim 7, when power is supplied from the power feeding means to the power receiving means, the power feeding means or the power receiving means is moved from the first position to the second position, and the power feeding means and the power receiving power are received. Even if the interval with the means is narrowed, they do not always face each other at the optimum position where power can be supplied most efficiently. Deviation from the optimum position is also conceivable due to variations in the installation position of the power receiving means.

  Therefore, in order to make the power feeding unit and the power receiving unit face each other at the optimum position where the power efficiency is maximum, the power supply system according to claim 5 or 7 is further provided according to claim 6 or claim 8. It is good to constitute like this.

  That is, in the power supply system according to claim 6, the power receiving device is provided with received power detection means for detecting the magnitude of the received power output from the power receiving means to the charging means, and the power receiving side control means. Is configured to transmit the detection result of the received power by the received power detection means in addition to the charge request signal via the power receiving side communication means.

Further, the power supply side movable means provided in the power supply device is configured to be able to move the power supply means also in the surface direction along the surface facing the power receiving means.
Then, when the power feeding side control means starts feeding power from the power feeding means to the power receiving means, the detection result of the received power received by the power feeding side communication means while moving the power feeding means in the surface direction via the movable means The position where the received power is maximized is detected based on the above, and the movement of the power feeding means is stopped at the detected position.

  For this reason, according to the power feeding system of the sixth aspect, not only can the power feeding means be moved from the first position to the second position to narrow the interval between the power feeding means and the power receiving means, By detecting the optimum position of the power feeding means that can supply power most efficiently to the power receiving means by moving along the surface facing the power receiving means, the power feeding means can be stopped at the optimum position. it can.

  Therefore, according to the power feeding system of the sixth aspect, the relative position between the power feeding means and the power receiving means is controlled to the optimum position where the power can be supplied most efficiently, thereby further improving the power feeding efficiency. Can do.

  Further, in the power supply system according to claim 8, similarly to the power supply system according to claim 6, the received power detection means for detecting the magnitude of the received power output from the power receiving means to the charging means in the power receiving device. Is provided.

  The power receiving side movable means is configured to be able to move the power receiving means also in the surface direction along the surface facing the power feeding means, and the power receiving side control means connects the power receiving means to the first via the power receiving side movable means. When the position is moved from the second position to the second position, the position where the received power detected by the received power detection means is maximized while the power receiving means is moved in the plane direction via the power receiving side movable means, The movement of the power receiving means is stopped at the detection position.

  For this reason, according to the power feeding system described in claim 8, not only can the power receiving means be moved from the first position to the second position to narrow the interval between the power feeding means and the power receiving means, By moving along the surface facing the power feeding means, it is possible to detect the optimum position of the power receiving means that can receive the power supply most efficiently from the power feeding means, and to stop the power receiving means at the optimum position. .

  Therefore, according to the power supply system of the eighth aspect, as in the case of the sixth aspect, the relative position between the power supply unit and the power reception unit is controlled to the optimum position where power can be supplied most efficiently. Thus, the power supply efficiency can be further improved.

1 is a perspective view illustrating a schematic configuration of a power supply system according to a first embodiment. It is a block diagram showing the structure of the electric power supply system of 1st Embodiment. It is explanatory drawing showing the structural example of a positioning marker. It is explanatory drawing explaining the guidance method of the motor vehicle to a parking space. It is a block diagram showing the structure of a receiving side communication part. It is explanatory drawing showing the structure at the time of using a power feeding side transmission part and a power receiving side receiving part for optical communications. It is a flowchart showing the control processing performed with the control apparatus of a receiving side and electric power feeding side. It is a block diagram showing the structure of the electric power supply system of 2nd Embodiment. It is a block diagram showing the structure of the electric power supply system of 3rd Embodiment. It is a flowchart showing the control processing performed with the control apparatus of the power receiving side and electric power feeding side of 3rd Embodiment. It is a block diagram showing the structure of the electric power supply system of 4th Embodiment. It is a block diagram explaining operation | movement of the electric power supply system of 4th Embodiment. It is a block diagram showing the modification of 4th Embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, the power supply system of the present embodiment uses a parking space 3 for parking a car as a mounting table, and an electric vehicle 2 (hereinafter simply referred to as a vehicle) parked in the parking space 3. It is for automatically supplying electric power, and includes an electric power receiving device 20 mounted on the vehicle 2 and an electric power supply device 30 provided in the parking space 3.

  And the electric power receiving apparatus 20 is provided with the electric power receiving part 21 arrange | positioned at the bottom face of the vehicle 2, and when the electric power feeder 30 stops the vehicle 2 in the predetermined position of the parking space 3, the electric power receiving part 21 of the vehicle 2 and A power feeding unit 31 embedded in the road surface 1 of the parking space 3 is provided so as to face each other.

  In addition, the parking space 3 is configured so that the driver of the vehicle can be identified by the left and right partition lines 5a and 5b formed on the road surface 1. On the road surface 1 behind the parking space 3, a car stop 6a, 6b is fixed.

  Further, behind the parking stops 6a and 6b of the parking space 3, when the driver parks the vehicle 2 in the parking space 3, the vehicle 2 is parked so that the power feeding unit 31 and the power receiving unit 21 are substantially facing each other. A positioning marker 18 for guiding to a predetermined position 3 is arranged.

Next, the configuration of the power receiving device 20 and the power supply device 30 will be described with reference to FIG.
As shown in FIG. 2, the power receiving device 20 mounted on the vehicle 2 is mounted on the vehicle 2 with the power received by the power receiving unit 21 in addition to the power receiving unit 21 provided on the bottom surface of the vehicle 2. A charging circuit 22 for charging the main battery 23 is provided.

  Here, the power receiving unit 21 includes a secondary coil 21a formed by winding a conductive wire made of a metal or the like, and a base 21b serving as a support member for the secondary coil 21a. Is mounted on the vehicle 2 by fixing it to the bottom surface of the vehicle 2. In addition, the base 21 is comprised with the insulating member (for example, synthetic resin).

  Moreover, the main battery 23 is comprised by the lithium ion battery etc. which can be charged repeatedly, for example. The main battery 23 is for supplying electric power to a motor 25 that is a power source of the vehicle 2, and is connected to the motor 25 via a driver circuit 24 that is controlled by a motor control device (not shown). .

  The charging circuit 22 converts the AC power output from the secondary coil 21a into DC, and supplies the converted AC power to the main battery 23 to charge the main battery 23, so-called AC. -It is composed of a DC converter.

  The main battery 23 has a built-in sensor (not shown) for detecting voltage, current, temperature, and the like. The detection signal from this sensor is input to the processing unit 7 together with the detection signal from the vehicle state and surrounding environment detection sensors provided in each part of the vehicle 2 and the reception signal input from the communication unit 28a described later. Is done.

  The processing unit 7 performs signal processing on each of these input signals and outputs the processed signal to the power receiving side control device 26. For preset information (for example, the power capacity of the main battery 23), display data By converting the data into the data and outputting it to the display unit 8, various data are displayed on the display unit 8. In addition, the display part 8 is comprised with the liquid crystal display etc., is provided in the front of the driver's seat of the vehicle 2, and is utilized in order to alert | report various information to a driver | operator.

  The power receiving side control device 26 is constituted by a microcomputer, and executes control processing for charging the main battery 23 from the power receiving unit 21 via the charging circuit 22 based on the input data from the processing unit 7. To do. This control process will be described later.

  The power receiving side control device 26 and the display unit 8 are supplied with power from the sub battery 9 mounted on the vehicle 2 so that the power receiving side control device 26 and the display unit 8 can operate even when the power supply from the main battery 23 is cut off when the vehicle 2 is stopped. To work. The sub battery 9 is appropriately charged with regenerative electric power or the like generated when the vehicle 2 is braked.

  Next, the power receiving device 20 is provided at the rear of the vehicle 2 and is provided at the rear of the vehicle 17 for capturing a rear image including the positioning marker 18 described above. In addition, a transmission unit 27b and a reception unit 28b for performing wireless communication with the reception unit 38b and the transmission unit 37b disposed behind the parking space 3 are provided.

  The camera 17 is configured by a so-called CCD camera or the like, and is connected to the display unit 8. And the display part 8 operates the camera 17 at the time of back travel of the vehicle 2, and displays the back image obtained from the camera 17 on a display screen.

  The transmitting unit 27b is connected to the power receiving side control device 26 via the communication unit 27a, and the signal output from the power receiving side control device 26 and modulated by the communication unit 27a for wireless communication is parked. The data is transmitted toward the receiving unit 38b installed behind the space 3.

  Moreover, the receiving part 28b is connected to the process part 7 via the communication part 28a, receives the transmission signal from the transmission part 37b installed behind the parking space 3, and outputs it to the communication part 28a. Then, the communication unit 28 a demodulates the reception signal from the reception unit 28 b and outputs the demodulated signal to the processing unit 7.

  On the other hand, the power feeding device 30 provided on the parking space 3 side demodulates received signals from the power feeding side control device 36 and the receiving unit 38b in addition to the power feeding unit 31, the receiving unit 38b and the transmitting unit 37b described above. A communication unit 38a that inputs to the power supply side control device 36, and a communication unit 37a that modulates transmission data output from the power supply side control device 36 into a transmission signal and outputs the transmission signal to the transmission unit 37b.

  The power feeding unit 31 includes a primary coil 31a formed by winding a conductive wire made of a conductor such as metal, and an insulating base 31b serving as a support member for the primary coil 31a. The primary coil 31a is connected to a drive circuit 32 that receives AC power taken from a commercial power supply via the AC outlet 12 and generates a pulse signal having a predetermined cycle. For this reason, an alternating current flows through the primary coil 31a by this pulse signal, and electric power is supplied to the secondary coil 31a on the vehicle 2 side by an electromagnetic induction effect generated by the alternating current.

  In addition, a switch 33 is provided between the AC outlet 12 and the drive circuit 32, and the power supply side control device 36 parks the vehicle 2 in which the power receiving device 20 is mounted in the parking space 3, and receives it. When the charging request signal transmitted from the vehicle 2 side is received by the unit 38, the switch 33 is closed and the drive circuit 32 is operated.

  The power supply side control device 36 is configured by a microcomputer, like the power reception side control device 26. The AC outlet 12 is also connected to a power supply unit that generates a power supply voltage (direct current) for driving an internal circuit using AC power input through the AC outlet 12.

  Next, the positioning marker 18 is made in a size that can be imaged by the camera 17, and the pattern of the marker is displayed when the captured image is displayed on the display unit 8 as illustrated in FIG. 3. In addition, at least one specific point of the pattern (the intersection 18a in the example of (a) and the black circle 18a in the example of (b)) is designed to be clear.

  By the way, in the electric power supply system of this embodiment, in order to charge the main battery 23 mounted in the vehicle 2, it is necessary to stop the vehicle 2 in the predetermined position of the parking space 3 in which the electric power feeder 30 was installed. .

  In general, when the vehicle 2 is parked in the parking space 3, as shown in FIG. 1, the position where the vehicle 2 is stopped is substantially determined by the vehicle stops 6a and 6b on the rear side, but the left and right sides are within the partition lines 5a and 5b. Is determined at an arbitrary position. Therefore, in the parking space 3, the position in the front-rear direction is substantially determined by the car stops 6a and 6b, but the position in the left-right direction varies.

  However, in the present embodiment, when the driver backs the vehicle 2 and stops in the parking space 3, the display unit 8 displays a rear image captured by the camera 17. While confirming the position of the positioning marker 18 displayed on the vehicle 2, the vehicle 2 can be moved backward, and the vehicle 2 can enter the parking space 3 while appropriately adjusting the position of the vehicle 2 in the left-right direction. become.

  More specifically, as shown in FIGS. 4B to 4D, the reference cursor 8 a is displayed on the screen 8 b of the display unit 8, and the vehicle 2 is moved to a predetermined position (with the power feeding unit 31) in the parking space 3. When the power receiving unit 21 is stopped at a position where the power receiving unit 21 is substantially directly opposed, the images of the reference cursor 8a and the specific point 18a of the positioning marker 18 overlap each other.

  As a result, when the driver of the vehicle 2 stops the vehicle 2 in the parking space 3 in the back, as shown in FIG. 4C, the specific point 18a of the positioning marker 18 displayed on the display unit 8 is the reference cursor. By overlapping the vehicle 8a, the vehicle 2 can be quickly and easily parked at a predetermined position while suppressing variations in the range of the parking space 3 in the left-right direction.

  Further, when the parking position of the vehicle 2 is shifted to the left side (the state indicated by (b) -2 in FIG. 4A), as shown in the display example of the display unit 8 in FIG. When 18 is visible on the left side of the reference cursor 8a and the parking position of the vehicle 2 is shifted to the right side (the state indicated by (d) -2 in FIG. 4A), the display unit in FIG. As in the display example of FIG. 8, the positioning marker 18 is visible on the right side of the reference cursor 8a.

  For this reason, the driver can easily determine whether it is shifted to the left or right simply by looking at the display screen of the display unit 8. For example, even if the presence of the power supply unit 31 and the power reception unit 21 is not visible, the correction of the shift Can be easily performed.

  In the present embodiment, the camera 17 and the positioning marker 18 are described as facing each other behind the vehicle 2. For example, the camera 17 is mounted on the bottom surface of the vehicle 2, and the positioning marker 18 is parked as a mounting table. It may be formed on the road surface of the space 3. Further, when the positioning marker 18 is formed on the road surface of the parking space 3, a vehicle guiding line (white line or the like) may be formed as the positioning marker 18.

  In the present embodiment, the power supply side control device 36 transmits the reference position signal from the transmission unit 37b, and the power reception side control device 36 receives the reference position signal normally at the reception unit 28b. The transmission of a charge request signal is permitted. This is to prevent a positioning error that occurs when the driver stops the vehicle 2 in the parking space 3.

  In other words, in the present embodiment, in the power receiving device 20, when the receiving unit 28 b receives a reference position signal equal to or higher than a predetermined level, the power receiving side control device 26 indicates that the power feeding unit 31 and the power receiving unit 21 of the vehicle 2 are substantially aligned. When the vehicle 2 is not stopped at the predetermined position, the power supply from the power supply unit 31 to the power reception unit 21 is performed by determining that the vehicle has stopped at the predetermined position and transmitting the charge request signal. Is prevented.

For this purpose, in the present embodiment, the communication unit 28a is configured as shown in FIG.
That is, in the communication unit 28a, the reference position signal is input to the input terminal 28a-1 via the receiving unit 28b. The input reference position signal is appropriately amplified in the amplifier circuit 28a-2, and then the branch circuit 28a. -3, and input to the demodulation circuit 28a-5 via the switching circuit 28a-4.

Then, the demodulation circuit 28a-5 demodulates the reference position information from the reference position signal, and the reference position information is sent from the output terminal 28a-8 to the power receiving side control device 26.
The communication unit 28a includes a level detection circuit 28a-6 that detects a signal level of an output signal (a reference position signal or the like) from the branch output terminal of the branch circuit 28a-3, and the level detection circuit 28a-6. The detected signal level is compared with a predetermined determination level. When the signal level is equal to or higher than the determination level, the switching circuit 28a-4 is switched to the through side, and the reference position signal is output to the demodulation circuit 28a-5. When the signal level is lower than the determination level, a control circuit 28a-7 is provided that shuts off the output path of the reference position signal by opening the switching circuit 28a-4.

  For this reason, according to the present embodiment, if the positional deviation between the power feeding unit 31 and the power receiving unit 21 exceeds the allowable range, and the relative position between the receiving unit 28b and the transmitting unit 37b deviates accordingly, the receiving unit 28b This makes it impossible to receive a reference position signal that is higher than the judgment level.

  Therefore, when the positional deviation between the power feeding unit 31 and the power receiving unit 21 exceeds the allowable range, the reference position signal is input to the power receiving side control device 26 via the demodulation circuit 28a-5, and the power receiving side control device 26 is received. Can prevent the transmitter 27b from transmitting a charge request signal.

  As described above, when the positional deviation between the power feeding unit 31 and the power receiving unit 21 exceeds the allowable range, the receiving unit 28b cannot receive the reference position signal that is equal to or higher than the determination level. What is necessary is just to adjust suitably the gain, directivity, etc. of the antenna for transmission / reception which comprises the receiving part 28b.

  Note that the transmission unit 37b and the reception unit 28b do not necessarily have to be configured to transmit and receive radio waves. For example, as illustrated in FIG. 6, the transmission unit 37b is configured by a light emitting element, and the reception unit 28b is configured of the vehicle 2. An optical signal may be transmitted and received by configuring with two photosensors arranged in the left-right direction.

  That is, with this configuration, the optical signal output from the transmission unit 37b is received by the two photosensors included in the reception unit 28b, and the reception signals (detection currents) from the two photosensors are communication. This is input to the unit 28a.

  For this reason, the communication unit 28a compares the magnitudes of the reception signals (detection currents) from the two photosensors, and outputs the reference position information when the magnitudes of the reception signals are substantially equal. The reference position information may not be output when there is a variation in the size that is greater than or equal to the determination value.

  In this case, when the deviation between the power feeding unit 31 and the power receiving unit 21 exceeds the allowable range, the magnitude of the received signal from the two photosensors is determined by the deviation of the optical axes of the transmission unit 37 and the reception unit 28. What is necessary is just to determine the positional relationship between the optical axes on the transmission side and the reception side, the type of lens, the aperture, and the like so that variations greater than the value occur.

Next, control processing executed by the power supply side control device 36 and the power reception side control device 26 will be described with reference to the flowchart shown in FIG.
7A is a flowchart for explaining the control process executed by the power receiving side control device 26, and FIG. 7B is a flowchart for explaining the control process executed by the power supply side control device 36. (C) is a flowchart showing the drive procedure of the primary coil 31a (in other words, the drive circuit 32).

First, the control process of the power receiving side control device 26 will be described with reference to FIG.
In the present embodiment, the power receiving side control device 26 monitors the power capacity of the main battery 23 via the processing unit 7, and if the power capacity of the main battery 23 is equal to or greater than a predetermined value (S08: Yes), the system No startup is performed.

Further, when the power capacity of the main battery 23 has not reached the predetermined value (S08: No), the process proceeds to the next step.
In this state, the vehicle 2 is parked at a predetermined position in the parking space 3 where the power feeding device 30 is provided, and the power receiving side control device 26 is sent from the power feeding device 30 side. When receiving the power (S10: Yes), the power receiving side information is output from the power receiving side control device 26 (S14), and the charging power information is transmitted as a charging request signal via the communication unit 27a and the transmitting unit 27b. 30 is sent out.

  The power receiving side control device 26 continues to monitor the power capacity of the main battery 23 based on the information from the processing unit 7 (S16), and when the power capacity becomes a predetermined value during charging (S16: Yes), The output of the charge request signal is stopped (S18), and a charge completion signal is sent to the power feeding apparatus 30 side via the power receiving side transmission means 27 (S19).

  On the other hand, when the vehicle 2 cannot be parked at a predetermined position of the parking space 3 provided with the power feeding device 30 or can be parked at the predetermined position, the power receiving side control device 26 cannot receive the reference position signal. When (S10: No), the charge request signal for starting the system is not output.

Next, the control process of the power feeding side control device 36 will be described with reference to FIG. Note that this process is repeatedly executed as in the control process of the power receiving side control device 26.
The power supply side control device 36 continuously outputs the reference position signal to the communication unit 37a from the time of system standby (S20), thereby causing the transmission unit 37b to transmit the reference position signal.

  Further, the power supply side control device 36 monitors whether or not the charge request signal transmitted from the power receiving device 20 side is received by the reception unit 38b, and the charge request signal is received by the reception unit 38b. Then (S24: Yes), by outputting a “closed” drive signal to the switch 33 (S27), the drive circuit 32 is operated to supply power from the primary coil 31a to the secondary coil 21a. Let it begin.

When the power supply side control device 36 outputs the “closed” drive signal, the power supply side control device 36 proceeds to determination of the power capacity of the main battery 23 (S30).
That is, the power supply side control device 36 not only monitors the charge request signal sent from the power power receiving device 20 side, but also monitors the charge completion signal from the power power receiving device 20 side. When the charging completion signal is not received in 38b (S30: No), the drive signal of “closed” is output, the power supply from the primary coil 31a to the secondary coil 21a is continued, and the receiving unit 38b When the charging completion signal is received (S30: Yes), by outputting a drive signal of “open” to the switch 33 (S32), the power supply from the primary coil 31a to the secondary coil 21a is stopped. Let

  On the other hand, when the charging request signal is not received by the receiving unit 38b (S24: No. That is, when the vehicle 2 is not stopped at the predetermined position), the vehicle 2 is stopped while transmitting the reference position signal. Wait for the system to enter the system standby state.

Next, the procedure for driving the temporary coil 31a will be described in detail with reference to FIG.
As shown in FIG. 7C, the switch 33 receives a drive signal output from the power supply side control device 36 in response to the charge request signal (S37), becomes conductive (S39), and enters the drive circuit 32. When the AC power is supplied (S41), the primary coil 31a is driven, and power supply to the secondary coil 21a starts (S43).

  As described above, according to the power supply system of the present embodiment, the positioning marker 18 as the guiding means is installed in the parking space 3 as the mounting table of the vehicle 2, and this image is displayed on the vehicle 2 side. A camera 17 and a display unit 8 are provided for capturing and displaying the image.

  For this reason, the driver of the vehicle 2 moves the vehicle 2 to the parking space 3 while looking at the display image on the display unit 8, so that the power receiving unit 21 faces the power feeding unit 31 of the parking space 3. The vehicle can be stopped at a predetermined position.

  In addition, when the power supply device 30 receives the charge request signal at the reception unit 38b, the power supply device 30 closes the switch 33 and starts supplying power from the power supply unit 31 to the power reception unit 21. On the 20th side, when the reference position signal received by the receiving unit 28b is equal to or higher than the determination level, the charging request signal can be transmitted. Therefore, in the state where the vehicle 2 is not stopped at the optimum position, It is possible to prevent power from being supplied from 31 to the power receiving unit 21.

  As described above, according to the present embodiment, the vehicle 2 receives power from the power supply unit 31 in a state where the vehicle 2 is stopped at the optimum position (in other words, the power supply unit 31 and the power reception unit 21 face each other). Since the power supply to the unit 21 can be performed, the power supply can be efficiently performed, and energy saving of the power supply system can be achieved. In addition, variations in time required for charging the main battery 23 as the power storage means can be eliminated, and the charging time can be shortened.

In the present embodiment, the power receiving unit 21 corresponds to a power receiving unit of the present invention, the power feeding unit 31 corresponds to a power feeding unit of the present invention, and the power receiving side control device 26 corresponds to a power receiving side control unit. The side control device 36 corresponds to power supply side control means. In addition, the communication units 27a and 28a, the transmission unit 27b, and the reception unit 28b mounted on the vehicle 2 correspond to the power reception side communication unit of the present invention, and the communication units 37a and 38a installed on the parking space 3 side, the transmission The unit 37b and the receiving unit 38b correspond to power supply side communication means of the present invention. The positioning marker 18 corresponds to the guiding means of the present invention, and the camera 17 and the display unit 8 correspond to the guiding means of the present invention.
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.

  The power supply system of the present embodiment has substantially the same configuration as that of the first embodiment, except that a configuration for transmitting and receiving a reference position signal from the power supply system of the first embodiment (that is, a communication unit). 37a, transmitter 37b, receiver 28b and communication unit 28a) are deleted, and the switch 33 is closed when the power supply side control device 36 has successfully received the charge request signal received by the receiver 38b. Thus, power supply from the power feeding unit 31 to the power receiving unit 21 is started.

  Note that the determination as to whether or not the power reception request signal has been normally received is the same as the determination of the reference position signal in the first embodiment, for example, by configuring the communication unit 38a as shown in FIG. May be determined depending on whether or not is equal to or higher than the determination level, or determination may be made from the reception state of the optical signal by configuring the transmission unit 27b and the reception unit 38b as shown in FIG.

When the power supply system is configured in this way, the processing of S10 in the control processing shown in FIG. 7A and the processing of S20 in the control processing shown in FIG. 7B are not executed (in other words, If you want to pass through).
[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.

The difference between this embodiment and 1st Embodiment exists in the difference in the conditions in which the electric power receiving apparatus 20 sends out a charge wish signal.
In other words, in the present embodiment, when the parking brake of the vehicle 2 is applied and the vehicle 2 is reliably stopped, a charge request signal can be transmitted from the power receiving device 20 side, and the parking brake of the vehicle 2 is applied. When there is not, it is made to improve safety | security and energy saving property by making it impossible to transmit a charge request signal from the electric power receiving apparatus 20 side.

  Therefore, as shown in FIG. 9, the power receiving device 20 acquires data on the operation state of the parking brake via the processing unit 7, and the setting state of the parking brake of the vehicle 2 is “ON” (during braking). If it is determined that it is “ON”, the power receiving side control device 26 is provided with an activation determination unit 26 that outputs a stop information signal corresponding thereto.

  Then, in the power receiving side control device 26, as shown in FIG. 10, when it is determined that the reference position signal is received in S10, it is determined whether or not the stop information signal is input from the activation determination unit 29 in S12. Thus, the process waits for the parking brake to be applied, and when it is determined in S12 that the parking brake is applied, the processes after S14 are performed.

  As a result, according to the present embodiment, the power supply from the power feeding unit 31 to the power receiving unit 21 can be performed only when the vehicle 2 is reliably stopped. Can be improved.

The flowchart shown in FIG. 10 represents the control process executed by the power receiving side control device 26, but is the same as the flowchart of the first embodiment shown in FIG. 7 except that the process of S12 is added. Therefore, detailed description is omitted. Moreover, in this embodiment, the starting determination part 26 is corresponded to the stop state detection means of this invention.
[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS.

  The difference between the present embodiment and the first embodiment is that the power feeding unit 31 protrudes from the first position (see FIG. 12) embedded in the road surface of the parking space 3 and the road surface of the parking space 3, and receives power from the vehicle 2. It is provided so as to be movable between a second position approaching the section 21 (see FIG. 13), and the power supply device 30 supports the power feeding section 31 and places the power feeding section 31 in the first position or The movable portion 35 is provided at the second position.

  The movable portion 35 corresponds to the power supply side movable means of the present invention. For example, the hydraulic oil is supplied to the hydraulic cylinder in accordance with a command from the power supply side control device 36 and a hydraulic cylinder that expands and contracts by supply / discharge of the hydraulic oil. The hydraulic circuit is configured to expand and contract the hydraulic cylinder by supplying / discharging, and a limit switch that generates a limit signal when the power feeding unit 31 reaches the second position.

  And the movable part 35 is normally made to arrange | position the electric power feeding part 31 in a 1st position, When a drive command is input from the electric power feeding side control apparatus 36, the electric power feeding part 31 will be moved to a 2nd position, When a drive stop command is input from the power supply side control device 36, the power supply unit 31 is returned to the first position.

  Further, when the power supply side control device 36 outputs a drive signal in S27 of FIG. 7B, it outputs a drive command to the movable portion 35, thereby moving the power supply portion 31 to the second position. When power supply to the vehicle 2 is stopped in S32 of (b), the power supply unit 31 is moved to the first position by outputting a drive stop command to the movable unit 35.

As a result, according to the present embodiment, when power is supplied from the power feeding unit 31 to the power receiving unit 21, the power feeding unit 31 is moved to the vehicle 2 side, and the interval between the power feeding unit 31 and the power receiving unit 21 is reduced. The power supply efficiency to 2 can be improved.
(Modification)
Note that in the power supply system of the fourth embodiment, as shown by a dotted line in FIG. 13, when the power feeding unit 31 is in the second position, the power feeding unit 31 is opposed to the power receiving unit 21 (in other words, For example, a table 35 a for moving along the road surface of the parking space 3 may be provided in the movable portion 35.

  In this case, the power feeding side control device 36 moves the power feeding unit 31 from the first position to the second position by outputting a drive command to the movable unit 35 in S27 of FIG. The amount of power supplied from the power receiving device 20 to the main battery 23 from the power receiving device 20 until it is determined in S30 that a power reception completion signal has been received after starting the power supply from 31 to the power receiving unit 21. The power supply unit 31 is moved along the surface facing the power receiving unit 21 (in other words, the road surface of the parking space 3) so that the power amount becomes the maximum value, and the power amount reaches the maximum value. The power feeding unit 31 is configured to be positioned at a certain position.

That is, in this way, the power feeding unit 31 can be arranged at a position where power can be supplied more efficiently to the power receiving unit 21.
In this modification, the current and voltage detection sensors provided in the main battery 23 function as the received power detection means of the present invention.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in 4th Embodiment and its modification, it demonstrated that the electric power supply apparatus 30 provided in the parking space 3 was provided with the movable part 35 which moves the electric power feeding part 31 between a 1st position and a 2nd position. However, the power receiving device 20 mounted on the vehicle 2 is provided with a movable portion 35, and the movable portion 35 causes the power receiving portion 21 to protrude from the first position housed inside the vehicle 2 and the bottom surface of the vehicle 2. Then, it may be moved between the second position approaching the power feeding unit 31 of the parking space 3.

  In this case, when the power receiving side control device 26 outputs the charge request signal in S14 of FIG. 7A, the power receiving unit 21 is moved to the second position by outputting a drive command to the movable unit 35. If the power reception unit 21 is moved to the first position by outputting a drive stop command to the movable unit 35 when the charging completion signal is output in S19 of FIG. The same effects as in the fourth embodiment can be obtained.

  In this case, the same table 35a as that of the modification of the fourth embodiment is provided in the movable portion 35, and the power receiving portion 21 is moved along the surface facing the power feeding portion 31 (in other words, the road surface of the parking space 3). By making it possible, the power supply efficiency can be further increased.

  That is, in this case, after the power receiving side control device 26 moves the power receiving unit 21 from the first position to the second position by outputting a drive command to the movable unit 35 in S14 of FIG. The power reception unit 21 is opposed to the power supply unit 31 while monitoring the amount of power supplied from the charging circuit 22 to the main battery 23 until it is determined in S16 that the charging of the main battery 23 is completed. It moves along the surface (in other words, the road surface of the parking space 3), and the power reception unit 21 is positioned at a position where the amount of electric power reaches the maximum value.

And if it does in this way, it will become possible to arrange | position the power receiving part 21 in the position which can receive the electric power supplied from the electric power feeding part 31 more efficiently.
In the above embodiment, the power receiving device 20 has been described as being provided with the communication units 27a and 28a, the transmission unit 27b, and the reception unit 28b as power receiving side communication means. You may comprise integrally as a part. Similarly, the power supply device 30 has been described as including the communication units 37a and 38a, the transmission unit 37b, and the reception unit 38b as power supply side communication means. However, these units are configured integrally as one communication unit. May be.

  Moreover, in the said embodiment, the transmission part 37b and the receiving part 38b by the side of the electric power supply apparatus 30 are arrange | positioned behind the parking space 3, and the transmission part 27b and the receiving part 28b by the side of the power receiving apparatus 20 are the rear part of the vehicle 2. However, the transmission unit 37b and the reception unit 38b on the power supply device 30 side are arranged on the road surface of the parking space 3, and the transmission unit 27b and the reception unit 28b on the power reception device 20 side are arranged on the vehicle 2. May be provided at a position facing the receiving unit 38b and the transmitting unit 37b on the power supply device 30 side when the vehicle 2 is stopped at the optimal position. Each of these units may be configured to transmit and receive optical signals as illustrated in FIG.

  Furthermore, in the above embodiment, the power feeding unit 31 and the power receiving unit 21 have been described as configured by coils (a primary coil 31a and a secondary coil 21a) formed by winding a metal wire. Any device that can supply power without contact may be used. For example, a wireless power transmission method using microwaves may be used.

  In this case, a waveguide slot antenna may be used as the power feeding unit 31, and a microwave antenna made of a microstrip line may be used as the power receiving unit 21. In this case, the drive circuit 32 of the power feeding unit 31 is a microwave source, and the charging circuit of the power receiving unit 21 may be configured by a diode or the like that detects microwaves.

  Moreover, although the electric power feeding part 31 of the electric power feeder 30 was arrange | positioned along the road surface of the parking space 3, and the electric power receiving part 21 of the electric power receiving apparatus 20 was provided in the bottom face of the vehicle 2, it demonstrated that the electric power feeding part 31 and electric power reception were received. When the vehicle 2 is stopped in the parking space 3, the unit 21 may be arranged so as to face each other, and is not necessarily arranged as in the above embodiment.

Moreover, although the electric power supply system which used the vehicle 2, ie, the electric vehicle, was demonstrated in the said embodiment as a moving body, a motorcycle etc. may be sufficient as a moving body.
In addition, the mounting table on which the moving body is mounted is described as the parking space 3 using the road surface 1, but instead of the road surface 1, a lift parking system configured to be able to mount the entire moving body. It may be a vehicle stand or a self-propelled parking floor.

  DESCRIPTION OF SYMBOLS 1 ... Road surface, 2 ... Vehicle (electric vehicle), 3 ... Parking space, 5a, 5b ... Partition line, 6a, 6b ... Car stop, 7 ... Processing part, 8 ... Display part, 8a ... Reference cursor, 8b ... Screen, 9 DESCRIPTION OF SYMBOLS ... Secondary battery, 12 ... AC outlet, 17 ... Camera, 18 ... Positioning marker, 20 ... Power receiving device, 21 ... Power feeding part, 21a ... Secondary coil, 21b ... Base, 22 ... Charging circuit, 23 ... Main battery, 24 ... Driver, 25 ... Motor, 26 ... Power-receiving-side control device, 27a ... Communication unit, 27b ... Transmission unit, 28a ... Communication unit, 28b ... Reception unit, 29 ... Startup determination unit, 30 ... Power feeding device, 31 ... Power feeding 31a ... primary coil, 31b ... base, 32 ... drive circuit, 33 ... switch, 36 ... power supply side control device, 37a ... communication unit, 37b ... transmission unit, 38a ... communication unit, 38b ... reception unit.

Claims (8)

A power supply device provided with a power supply unit that is provided on a mounting table on which the moving body can be mounted and that supplies power to the moving body mounted on the mounting table in a contactless manner;
Provided in the movable body that can be placed on the mounting table, charging means for charging the power storage means mounted on the moving body, and when the moving body is placed on the mounting table, the power supply A power receiving device comprising: a power receiving means for receiving power from the means in a non-contact manner and supplying the received power to the charging means;
In a mobile power supply system comprising:
On the mounting table side, a guiding unit for guiding the moving body to an optimum position optimal for supplying power from the power feeding unit to the power receiving unit is disposed,
Guidance that guides the driver to move the moving body to the optimum position by detecting the guiding means arranged on the mounting table and notifying the driver of the detection result. A power supply system for a moving body, characterized in that means is provided. The power receiving device is:
Power-receiving-side communication means for performing wireless communication with the power supply device;
When charging to the power storage means is necessary, a power receiving side control means for transmitting a charge request signal from the power receiving side communication means;
With
The power supply device
Power supply side communication means for performing wireless communication with the power receiving device;
When the charging request signal is received by the power supply side communication means, power supply side control means for starting power supply from the power supply means to the power reception means;
The power supply system for a mobile body according to claim 1, comprising: The power supply side control means transmits a reference position signal from the power supply side communication means,
The power receiving side control unit permits transmission of the charge request signal when the power receiving side communication unit normally receives the reference position signal, and the power receiving side communication unit receives the reference position signal. If not, transmission of the charging request signal is prohibited. The mobile power supply system according to claim 2, wherein transmission of the charging request signal is prohibited. The power receiving device is provided with a stop state detecting means for detecting a stop state of movement of the moving body,
The power receiving side control means permits transmission of the charge request signal when the movement stop state of the moving body is detected by the stop state detection means, and the stop state of the moving body is allowed by the stop state detection means. 4. The mobile power supply system according to claim 2 or 3, wherein transmission of the charge request signal is prohibited if it is not detected. The power supply device
A power feeding side movable means for moving the power feeding means between a first position stored in the mounting table and a second position approaching a bottom surface of the moving body mounted on the mounting table;
The power supply side control means moves the power supply means from the first position to the second position via the power supply side movable means when the charge request signal is received by the power supply side communication means. The power supply system for a moving body according to claim 3 or 4, wherein power supply from the power supply unit to the power reception unit is started. The power receiving device includes a received power detection unit that detects a magnitude of received power output from the power receiving unit to the charging unit,
The power receiving side control means is configured to transmit the detection result of the received power by the received power detection means in addition to the charge request signal via the power receiving side communication means,
The power feeding side movable means is configured to be able to move the power feeding means in a surface direction along a surface facing the power receiving means,
When the power feeding side control unit starts feeding power from the power feeding unit to the power receiving unit, the power feeding side control unit receives the power feeding side communication unit while moving the power feeding unit in the surface direction via the movable unit. 6. The mobile power supply system according to claim 5, wherein a position where the received power is maximized is detected based on a detection result of the received power, and movement of the power feeding unit is stopped at the detected position. The power receiving device is:
A power receiving side movable means for moving the power receiving means between a first position housed in the moving body and a second position protruding from the bottom surface of the moving body toward the mounting table;
When the transmission of the desired charging signal is permitted, the power receiving side control unit starts transmission of the charging desired signal and moves the power receiving unit from the first position to the second position via the power receiving side movable unit. The power supply system for a moving body according to claim 3 or 4, wherein the power supply system is moved to a position. The power receiving device includes a received power detection unit that detects a magnitude of received power output from the power receiving unit to the charging unit,
The power receiving side movable means is configured to be able to move the power receiving means also in a surface direction along a surface facing the power feeding means,
The power receiving side control means moves the power receiving means from the first position to the second position via the power receiving side movable means, and then moves the power receiving means in the surface direction via the power receiving side movable means. The position of the received power detected by the received power detection means is detected while being moved, and the movement of the power receiving means is stopped at the detected position. Mobile power supply system.

Images