JP2020068558A - Power supply system and power supply method - Google Patents

Abstract

To provide a power supply system that does not make a cable flexible.SOLUTION: A power supply system Z1 includes: a charger main body 11 having a control device 12 for controlling an amount of power supply; a DC power line 21 to which electric power is supplied from the charger main body 11; a power transmission terminal 41A connected to the DC power line 21; a movable charging unit Y1 which is movable; and a connector 111 provided at an end of a cable 121 extended from the movable charging unit Y1 and supplying DC power of the DC power line 21 to a vehicle. The movable charging unit Y1 has a power receiving terminal 101 having a detachable function with respect to the power transmission terminal 41A, and a connector detector for detecting that the connector 111 is in a predetermined position. After checking that the connector detector is set at the predetermined position based on a movement instruction to the movable charging unit Y1 from the control device 12 and releasing connection between the power transmission terminal 41A and the power receiving terminal 101, the movable charging unit Y1 starts moving.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a power supply system and a power supply method.

  The installation of power generators using internal combustion engines (hereinafter referred to as internal combustion engine power generators) is expanding for purposes such as power compensation equipment for the stable supply of renewable energy and private power generation equipment in emergencies. Further, for the purpose of supplying power to a controlled area, it is expected that the need for direct current (DC) power supply devices as well as alternating current (AC) power supply devices such as internal combustion engine power generators will increase. Further, development of a charging station for charging an electric vehicle using a direct current (DC) power supply device is in progress. In addition, mobile chargers are being developed to reduce the operating rate and installation costs of the chargers.

  For example, in Patent Document 1, "a charger main body, a movable connector housing that is supplied with electric power from the charger main body and is movable, and an end portion of a cable extending from the movable connector housing are provided, A connector that supplies the electric power to the vehicle, the movable connector storage portion includes a storage sensor that detects whether or not the connector is returned to a predetermined position, and the connector has the predetermined position. A DC power supply system is disclosed that includes a lock portion that prevents movement of the movable connector storage portion when the storage sensor detects that the storage connector has not been returned to the.

JP, 2014-166003, A

  In Patent Document 1, DC power generated by the charger main body is supplied to the movable connector storage portion via a cable for power supply. Therefore, as the cable, for example, a flexible cable exemplified by a link chain type (special chain type) power supply device is used so as to follow the movement of the movable connector storage portion. The flexibility of the cable with each movement of the movable connector housing poses a reliability problem. In addition, there is a problem that it is necessary to secure a storage space for the cable.

  The present invention is an invention for solving the above-mentioned problems, and an object of the present invention is to provide a power supply system and a power supply method capable of easily charging via a cable.

  To achieve the above object, a power supply system of the present invention is connected to a charger main body having a controller for controlling the amount of power supply, a DC power line supplied with power from the charger main body, and a DC power line. A movable charging unit, a movable charging unit that is movable, and a connector that is provided at an end of a cable that extends from the movable charging unit and that supplies the vehicle with DC power from a DC power line. Has a power receiving terminal having a function of attaching to and detaching from a power transmitting terminal, and a connector detector that detects that the connector is at a predetermined position, and based on a movement command from the control device to the movable charging unit, the connector detector. After confirming that the connector is in the predetermined position and disconnecting the connection between the power transmission terminal and the power reception terminal, the movable charging unit starts moving. Other aspects of the present invention will be described in the embodiments described later.

  According to the present invention, charging via a cable can be easily performed.

It is a figure which shows the whole structure of the electric power supply system Z1 which concerns on Embodiment 1. It is a diagram showing a system configuration of a power supply system Z1 according to the first embodiment. It is a figure which shows the charge flow F1 of the electric power supply system Z1 which concerns on Embodiment 1. It is a figure which shows the charging flow F2 of the electric power supply system Z1 which concerns on Embodiment 1. It is a figure which shows the movement flow of the electric power supply system Z1 which concerns on Embodiment 1. It is a figure which shows the system configuration of the electric power supply system Z2 which concerns on Embodiment 2. It is a figure which shows the system configuration of the electric power supply system Z3 which concerns on Embodiment 3. It is a figure which shows the system configuration of the electric power supply system Z4 which concerns on Embodiment 4. It is a figure which shows the movement flow of the electric power supply system Z4 which concerns on Embodiment 4. It is a figure which shows the priority of the electric power supply system Z4 which concerns on Embodiment 4.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, the same reference numerals indicate the same constituent elements or constituent elements having similar functions. First, with reference to FIG. 1, a configuration example of a charging station according to the present embodiment will be described.

<< Embodiment 1 >>
[Power supply system Z1]
FIG. 1 is a diagram illustrating a configuration of a power supply system Z1 according to the first embodiment. The power supply system Z1 includes a charger main body 11, a controller 12 (control device) inside the charger main body for controlling the amount of electric power and a movement command, and a DC power line 21 for transmitting electric power from the charger main body 11. A control signal line 31 for transmitting a control signal of the controller 12, and power transmission terminals 41A (see FIG. 2) and 41B connected to the DC power line 21 and the control signal line 31 for transmitting / transmitting DC power and control signals. A mobile charger Y1, moving lines 81 and 82 that are tracks on which the mobile charger Y1 moves, a charging cable 121 connected to the mobile charger Y1 and transmitting electric power of the DC power line 21, and a charging cable. Connector 111 connected to vehicle 121 and connected to vehicle 201, and parking spaces X1 and X2 in which vehicle 201 parks for charging Constructed.

[Mobile charger Y1]
The mobile charger Y1 displays charging information and inputs a movement of the mobile charger Y1, a display input section 51, a connector storage section 61 for storing the connector 111, and a connector 111 inside the connector storage section 61. There is a connector detection unit 62 for detecting whether the battery is stored and a charge button 71 for controlling start and stop of charging.

  FIG. 2 is a diagram showing a system configuration of the power supply system Z1 according to the first embodiment. With reference to FIG. 2, a system configuration example of the mobile charger Y1 according to the present embodiment will be described. The mobile charger Y1 includes a semiconductor element, an electromagnetic switch, and the like and has a function of attaching to and detaching from the power transmission terminal 41A. The DC power of the DC power line 21 and the control signal of the control signal line 31 are input to the power transmission terminal 41A. Power receiving terminal 101 for receiving power, charging cable 121 for transmitting DC power of power receiving terminal 101, connector 111 connected to charging cable 121 for supplying DC power to vehicle 201, and connected to power receiving terminal 101 for storing DC power Power storage device 131, a driving power unit 141 that is connected to the power storage device 131 in parallel to generate driving power for the mobile charger Y1, and drive units 151 to 154 that are connected to the driving power unit 141 and move the mobile charger. And the connection state between the power transmission terminal 41A and the power reception terminal 101, the amount of power applied to the connector 111, the connection state with the vehicle 201, and the power storage device. 31 watt and drive power amount monitoring, a control unit 161 for controlling. The control unit 161 may be connected not only by the control signal line 31 but also by a communication unit 162 that is a unit that does not require a communication cable such as wireless communication in communication with the control controller 12 (control device).

  The mobile charger Y1 can receive a movement command or the like by wire communication when connected to the DC power line 21. The mobile charger Y1 moves to a moving location based on a movement command when the DC power line 21 is disconnected. Therefore, the communication unit 162 is used for the purpose of confirming the state of the charger when moving.

[Charging flow F1]
FIG. 3 is a diagram showing a charging flow F1 of the power supply system Z1 according to the first embodiment. A charging flow when the vehicle 201 is in the parking space X1 will be described with reference to FIG. Refer to FIG. 2 as needed. The controller 12 uses the control unit 161 to check the electrical and mechanical connection state of the power transmission terminal 41A and the power reception terminal 101 (step S301). When there is no connection (step S302, No), the controller 12 issues a command (connection request) to the control unit 161 to connect the power transmission terminal 41A and the power reception terminal 101 to the mobile charger Y1 (step S303).

  If there is a connection (step S302, Yes), the controller 12 confirms the connection state between the connector 111 and the vehicle 201 (step S304). When there is no connection (step S305, No), the control controller 12 uses the display input unit 51 of the mobile charger Y1 to request the owner of the vehicle 201 to connect using characters, images, or voice (step S305). S306).

  When there is a connection (step S305, Yes), the controller 12 locks the connection state of the connector 111 and the vehicle 201 using a lock part (not shown) so that the connection cannot be removed (step S307). After the connector 111 and the vehicle 201 are locked, the controller 12 confirms the ON state of the charging button 71 of the mobile charger Y1 (step S308). When the charge button 71 is in the OFF state (step S309, No), the controller 12 uses the display input unit 51 of the mobile charger Y1 and the blinking / lighting of the charge button 71 to notify the owner of the vehicle 201 of the charge button. A request is made to shift 71 to the ON state, and the process returns to step S308. When the charging button 71 is in the ON state (step S309, Yes), the controller 12 determines the charging power amount of the charger main body based on the charging amount command value sent from the vehicle 201 via the connector of the mobile charger Y1. Is controlled to start the charging operation (step S310).

[Charging flow F2]
FIG. 4 is a diagram showing a charging flow F2 of the power supply system Z1 according to the first embodiment. The flow during charging will be described with reference to FIG. Refer to FIG. 2 as needed. The controller 12 monitors (confirms) the ON state of the charging button 71 during the charging operation (step S401). When the charging button 71 is OFF (step S402, No), the controller 12 stops the supply of charging power to the charger main body, stops the charging operation (step S408), and proceeds to step S406.

  When the charge button 71 is ON (step S402, Yes), the controller 12 confirms the charge amount command value (charge state) sent from the vehicle 201 via the connector 111 (step S403). If the charging power command value is not zero (full charge) (step S404, No), the process returns to step S403 and power supply is continued. When the battery is fully charged (step S404, Yes), the controller 12 stops the charging operation (step S405). After the charging operation is stopped, the controller 12 releases the connection lock state between the connector 111 and the vehicle 201 (step S406). After the connection is released, the controller 12 requests the owner of the vehicle 201 to return the connector 111 to the connector storage section by using the display input section 51 of the mobile charger Y1 by characters, images, voices, or the like. (Instruct) (step S407).

[Movement flow]
FIG. 5 is a diagram showing a movement flow of the power supply system Z1 according to the first embodiment. A flow in which the mobile charger Y1 moves from the parking space X1 to the parking space X2 will be described with reference to FIG. When the owner of the vehicle 201 inputs the destination of the parking space X2 via the display input unit 51, the controller 12 issues a command to move the mobile charger Y1 in the parking space X1 to the parking space X2. It is received (step S501). After confirming the movement destination, the controller 12 confirms whether the mobile charger Y1 is movable (step S502).

  When the mobile charger Y1 is not movable (step S502, No), that is, when the mobile charger Y1 is in use or the power storage device 131 lacks the amount of electric power, the drive power is insufficient, or the drive units 151 to 154 are out of order. When the mobile charger Y1 is not in the movable state, the mobile charger Y1 transmits the information (status report) indicating that the mobile charger Y1 cannot be moved to the controller 12 via the control unit 161, and also the display input unit. A message indicating that the vehicle cannot be moved is displayed on 51 (step S508), and the process ends.

  When the mobile charger Y1 is in a movable state (step S502, Yes), the controller 12 confirms (detects) whether or not the connector 111 is housed in the connector housing 61 by using the connector detector (step S503). ). When the connector 111 is not housed in the connector housing 61 (step S504, No), the controller 12 uses the display input unit 51 of the mobile charger Y1 to identify the vehicle 201 by characters, images, sounds, or the like. Requesting (instructing) the person who has confirmed the display input unit 51 to return the connector 111 to the connector storage unit 61 (step S505), and the process returns to step S503.

  When the connector 111 is stored in the connector storage 61 (step S504, Yes), the controller 12 electrically and mechanically releases the connection state between the power transmission terminal 41A and the power reception terminal 101 (step S506). After the connection is released, the controller 12 uses the control unit 161 to drive the driving power unit 141 to start moving the mobile charger Y1 to the parking space X2 (step S507).

  As described above, according to the present invention, since the mobile charger can be moved after disconnecting mechanically and electrically from the DC power line, it is not necessary to further extend the power supply cable on the DC power line, It is possible to provide a highly reliable mobile charger. Further, according to the present invention, the cable is not flexible.

<< Embodiment 2 >>
[Power supply system Z2]
FIG. 6 is a diagram showing the configuration of the power supply system Z2 according to the second embodiment. The mobile charger Y2 of FIG. 6 has a power conversion unit 171 added as compared with the mobile charger Y1 of FIG. The same functions as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.

[Mobile charger Y2]
The mobile charger Y2 has a function of attaching to and detaching from the power transmission terminal 41A, which is configured by a semiconductor element, an electromagnetic switch, or the like, and has a DC power of the DC power line 21 and a control signal of the control signal line 31 input to the power transmission terminal 41A. A power receiving terminal 101 for receiving power, a charging cable 121 for transmitting DC power of the power receiving terminal 101, a connector 111 connected to the charging cable 121 for supplying DC power to the vehicle 201, and a charging cable 121 on the charging cable 121 A power conversion unit 171 that converts DC power according to the load mounted on the vehicle 201 that is connected to the connector 111, a power storage device 131 that is connected to the power receiving terminal 101 and stores DC power, and is parallel to the power storage device 131. Connected to the driving power unit 141 for generating driving power for the mobile charger Y2, and a mobile charging unit 141 connected to the driving power unit 141. Drive units 151 to 154 that move the device, the connection state of the power transmission terminal 41A and the power reception terminal 101, the amount of power applied to the connector 111, the connection state with the vehicle 201, the amount of power of the power storage device 131, the amount of driving power, and the power. The control unit 161 monitors and controls the output power of the conversion unit 171. The control unit 161 may be connected not only by the control signal line 31 but also by a communication unit 162 that is a unit that does not require a communication cable such as wireless communication in communication with the control controller.

[Power conversion unit 171]
The power converter 171 performs power conversion of the DC power of the power receiving terminal 101 according to the load mounted on the vehicle 201 connected to the connector 111. Specifically, when the load mounted on the vehicle 201 requires AC power, the power conversion unit 171 uses a power conversion device that converts the DC power of the power receiving terminal 101 into AC power. Further, when the loads mounted on the vehicle 201 request DC power of different voltage levels, the power conversion unit 171 converts the DC power of the power receiving terminal 101 into DC power that matches the load of the vehicle 201. use. Moreover, the power converter 171 may use a power converter capable of outputting DC power and AC power, or may use a plurality of power converters.

  As described above, according to the present invention, since the mobile charger can be moved after disconnecting mechanically and electrically from the DC power line, it is not necessary to further extend the power supply cable on the DC power line, It is possible to provide a highly reliable mobile charger. Further, it becomes possible to supply DC power or AC power having different voltage levels according to the load on the vehicle side. Further, according to the present invention, the cable is not flexible.

<< Embodiment 3 >>
[Power supply system Z3]
FIG. 7 is a diagram showing the configuration of the power supply system Z3 according to the third embodiment. In FIG. 2, the power transmission terminal 41 and the power reception terminal 101 have a detachable function, but in FIG. 7, the power transmission terminal 41 and the power reception terminal 101 have a non-contact power transmission function. That is, it has the power transmission coils 91A and 91B connected to the power transmission terminals 41A and 41B, and the mobile charger Y3 electrically connected to the power transmission coils 91A and 91B. The same functions as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.

[Mobile charger Y3]
The mobile charger Y3 includes a power receiving coil 181, which receives electric power from the power transmitting coil 91A, a power receiving terminal 101 connected to the power receiving coil 181, a charging cable 121 which transmits DC power from the power receiving terminal 101, and a charging cable 121. Connected to the vehicle 201 to supply DC power to the vehicle 201, a power storage device 131 connected to the power receiving terminal 101 to store DC power, and connected in parallel to the power storage device 131 to generate driving power for the mobile charger Y2. The drive power unit 141, the drive units 151 to 154 connected to the drive power unit 141 and moving the mobile charger, the connection state of the power transmission terminal 41A and the power reception terminal 101, the amount of power applied to the connector 111, and the vehicle 201. The control unit 161 monitors and controls the connection state of the power storage device, the amount of electric power of the power storage device 131, and the amount of driving power. The control unit 161 may be connected not only by the control signal line 31 but also by a communication unit 162 that is a unit that does not require a communication cable such as wireless communication in communication with the control controller.

[Power transmission terminal 41A and power reception terminal 101]
The power transmission terminal 41A has a function of converting DC power of the DC power line 21 into AC power so that power can be transmitted from the power transmission coil 91A to the power reception coil 181. The AC power generated by the power transmission terminal 41A is transmitted to the power reception coil 181 via the power transmission coil 91A. The power receiving terminal 101 has a function of converting the AC power transmitted to the power receiving coil 181 into DC power.

  That is, in the power supply system Z3, the power transmission coil 91A (91B) connected to the power transmission terminal 41A (41B) and the power reception coil 181 connected to the power reception terminal 101 are provided, and the power transmission terminal 41A is connected to the DC power line. Has a function of converting the first DC power into the first AC power, the power transmission terminal 41A transmits the first AC power to the power transmission coil 91A, and the power reception coil 181 receives the first AC power transmitted from the power transmission coil 91A. The power receiving terminal 101 has a function of converting the first AC power transmitted to the power receiving coil 181 into the second DC power, and the power receiving terminal 101 supplies the second DC power to the vehicle 201 via the connector 111.

  As described above, according to the present invention, the power from the DC power line can be supplied to the mobile charger by using the power transmission / reception coil, and it is not necessary to further extend the cable for power supply on the DC power line, and the reliability can be improved. It is possible to provide a mobile charger with high cost.

<< Embodiment 4 >>
[Power supply system Z4]
FIG. 8 is a diagram showing the configuration of the power supply system Z4 according to the fourth embodiment. In the first to third embodiments, the case where the number of mobile chargers is one is shown, but in the fourth embodiment, the case where there are a plurality of (for example, two) chargers will be described. The same functions as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.

  The power supply system Z4 includes power transmission terminals 41A, 41C, 41B connected to the DC power line 21 and the control signal line 31 for transmitting DC power, and mobile chargers Y4A, Y4B connected to the power transmission terminals 41A, 41C, 41B. Composed of. The vehicle 201 includes parking spaces X1, X3, X2 for parking for charging.

[Mobile charger Y4A]
The mobile charger Y4A has a function of attaching to and detaching from the power transmission terminal 41A, and a power receiving terminal 101A that receives the DC power of the DC power line 21 and the control signal of the control signal line 31 input to the power transmitting terminal 41A, and a power receiving terminal. A charging cable 121A for transmitting DC power of 101A, a connector 111A connected to the charging cable 121A for supplying DC power to the vehicle 201, a power storage device 131A connected to the power receiving terminal 101A for storing DC power, and a power storage device 131A. A driving power unit 141A connected in parallel to generate driving power for the mobile charger Y4A, driving units 151A to 154A connected to the driving power unit 141A for moving the mobile charger, a power transmission terminal 41A, and a power receiving terminal 101A. The connection state, the amount of electric power applied to the connector 111A, the connection state with the vehicle 201, and the power storage device 131A Monitoring the amount of power and drive power amount, a control unit 161A for controlling. The control unit 161A is connected by not only the control signal line 31 but also a communication unit (not shown) that is a unit that does not require a communication cable such as wireless communication in communication with the control controller 12 (control device). Good.

[Mobile charger Y4B]
Like the mobile charger Y4A, the mobile charger Y4B has a function of attaching to and detaching from the power transmission terminal 41B, and outputs the DC power of the DC power line 21 input to the power transmission terminal 41B and the control signal of the control signal line 31. A power receiving terminal 101B that receives power, a charging cable 121B that transmits DC power from the power receiving terminal 101B, a connector 111B that is connected to the charging cable 121B and that supplies DC power to the vehicle 201, and a power receiving terminal 101B that stores DC power. A power storage device 131B, a drive power unit 141B connected in parallel to the power storage device 131B to generate drive power for the mobile charger Y4B, and drive units 151B to 154B connected to the drive power unit 141B to move the mobile charger. , The connection state between the power transmission terminal 41B and the power reception terminal 101B, the amount of power applied to the connector 111A, and the vehicle 201. Monitoring the amount of power or driving force of the connection state and power storage unit 131A, a control unit 161B for controlling. The control unit 161B is connected to not only the control signal line 31 but also a communication unit (not shown) that is a unit that does not require a communication cable such as wireless communication in communication with the control controller 12 (control device). Good.

[Flow of moving two or more units]
FIG. 9 is a diagram illustrating a movement flow of the power supply system Z4 according to the fourth embodiment. A process in which the controller 12 moves the mobile charger Y4A in the parking space X1 or the mobile charger Y4B in the parking space X2 to the parking space X3 will be described with reference to FIG. 9. Refer to FIG. 8 as appropriate.

  The controller 12 confirms beforehand the priority order of the mobile chargers Y4A and Y4B in the storage unit in the controller 12 (step S901), and if the mobile charger is not priority 1 (step S901, No). Returning to step S901, if the priority of the mobile charger is 1 (step S901, Yes), the process proceeds to step S902.

[When moving the mobile charger Y4A]
When the charger having the highest priority (denoted as priority 1 in FIG. 9) is the mobile charger Y4A, the controller 12 causes the owner of the vehicle 201 to move to the destination via the display input unit 51. When the parking space X3 is input, the command to move to the parking space X3 is received (step S902). After confirming the movement destination, the controller 12 confirms whether or not the mobile charger Y4A can be moved (step S903). When the mobile charger Y4A is not in a movable state, such as when the mobile charger Y4A is in use or when the power storage device 131A has insufficient electric power or the drive units 151A to 154A have a failure (step S903, No). The mobile charger Y4A transmits information (status report) indicating that the mobile charger Y4A cannot be moved to the controller 12 via the control unit 161A, and informs the display input unit 51A (not shown) that the mobile charger cannot move. Display (step S909), and the process ends.

  When the mobile charger Y4A is in a movable state (step S903, Yes), the controller 12 uses the connector detection unit 62A (not shown) to determine whether the connector 111A is stored in the connector storage 61A (not shown). To confirm (step S904). When the connector 111A is not housed in the connector housing 61A (step S905, No), the controller 12 uses the display input unit 51A of the mobile charger Y4A to display the owner of the vehicle 201 or the display input unit 51A. The confirmed person is requested (instructed) to return the connector 111A to the connector storage portion 61A (step S906), and the process returns to step S904.

  When the connector 111A is housed in the connector housing 61A (step S905, Yes), the controller 12 electrically and mechanically releases the connection state between the power transmission terminal 41A and the power receiving terminal 101A (step S907). After disconnecting the connection, the controller 12 uses the control unit 161A to drive the driving power unit 141A to start moving the mobile charger Y4A to the parking space X3 (not shown) (step S908).

[When moving the mobile charger Y4B]
When the charger having the highest priority (denoted as priority 1 in FIG. 9) is the mobile charger Y4B, the controller 12 confirms whether the mobile charger Y4B is movable ( Step S903). When the mobile charger Y4B is not in a movable state, such as when the mobile charger Y4B is in use or the electric power of the power storage device 131B is insufficient, the drive power is insufficient, or the driving units 151B to 154B are out of order (step S903, No). The mobile charger Y4B transmits the information indicating that it cannot be moved to the control controller 12 via the control unit 161B, and also displays the fact that it cannot be moved on the display input unit 51B (not shown) (step S909), and the process ends.

  When the mobile charger Y4B is in a movable state (step S903, Yes), the controller 12 uses the connector detection unit 62B (not shown) to determine whether the connector 111B is stored in the connector storage 61B (not shown). To confirm (step S904). When the connector 111B is not stored (returned) in the connector storage 61B (step S905, No), the controller 12 uses the display input unit 51B of the mobile charger Y4B to display the owner or display input of the vehicle 201. The person who confirms the portion 51B is requested (instructed) to return the connector 111B to the connector storage portion 61B (step S906), and the process returns to step S904. When the connector 111B is housed in the connector housing 61B (step S905, Yes), the controller 12 electrically and mechanically releases the connection state between the power transmission terminal 41B and the power reception terminal 101B (step S907). After disconnecting the connection, the controller 12 drives the driving power unit 141B by using the control unit 161B to start moving the mobile charger Y4B to the parking space X3 (step S908).

[Priority]
FIG. 10 is a diagram showing a priority order of the power supply system Z4 according to the fourth embodiment. The priority order for determining the moving order of the mobile chargers Y4A and Y4B will be described with reference to the priority order table 900 of FIG. The priority of the mobile chargers Y4A and Y4B is determined based on the information of the mobile chargers Y4A and Y4B stored in the storage unit in the controller 12. Specific information of the mobile chargers Y4A and Y4B is the distance between the positions of the mobile chargers Y4A and Y4B and the parking space X3, and the drive power units 141A and 141B mounted on the mobile chargers Y4A and Y4B. It is determined by the remaining amount of power storage devices 131A and 131B.

  For example, referring to FIG. 8, the distance between the parking space X1 and the parking space X3 on the DC power line 21 is d1, and the distance between the parking space X2 and the parking space X3 on the DC power line 21 is d2. When d1 <d2, the priority of the mobile charger Y4A is 1, and the priority of the mobile charger Y4B is 2. When d1> d2, the priority of the mobile charger Y4A is 2, and the priority of the mobile charger 4B is 1. If the equation d1 = d2, then the priorities are mutually 1 In this case, another priority order is used.

  In FIG. 10, the mobile charger Y4A closer to the parking space X3 has a priority of 1, and the mobile charger Y4B next next to the parking space X3 has a priority of 2. Further, based on the remaining amount information of the power storage device 131, the mobile charger Y4A with the largest remaining amount has the priority level 1, and the mobile charger Y4B with the second largest remaining amount has the priority level 2. Based on the above two pieces of information, the priority of the mobile charger Y4A to be moved to the parking space X3 is 1 and then the priority of the mobile charger Y4B is 2. The information used for determining the priority order of the mobile chargers Y4A and Y4B may be information other than the above, and if a command to move either the mobile charger Y4A or Y4B is finally generated. Good. Further, although the present embodiment describes the case where the number of mobile chargers is two, it is needless to say that the present embodiment is applicable even when a plurality of mobile chargers are used.

  As described above, according to the present invention, the mobile charger can be moved after mechanically and electrically disconnecting it from the DC power line, and the priority of the moving order of the mobile charger is determined. It is possible to provide a plurality of highly reliable mobile chargers without having to further extend a power supply cable on the line.

  It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are included. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those including all the configurations described. Further, it is possible to add / delete / replace other configurations with respect to a part of the configurations of the respective embodiments.

11 charger main body 12 control controller (control device)
21 DC power line (DC power line)
31 control signal lines 41A, 41B power transmission terminal 51 display input section 61 connector housing section 62 connector detection section (connector detector)
71 charging button 81A, 81B moving line 91A, 91B power transmission coil 101, 101A, 101B power receiving terminal 111 connector 121 charging cable (cable)
131 power storage device 141 drive power unit 151,152,153,154 drive unit 161 control unit 162 communication unit 171 power conversion unit 181 power receiving coil 201 vehicle X1, X2, X3 parking space Y1, Y2, Y3, Y4A, Y4B mobile charging Vessel (movable charging part)
Z1, Z2, Z3, Z4 power supply system

Claims (8)

A charger main body having a control device for controlling the amount of power supply,
A DC power line supplied with power from the charger body,
A power transmission terminal connected to the DC power line,
Movable movable charging part,
A connector that is provided at an end of a cable extending from the movable charging unit and that supplies the DC power of the DC power line to a vehicle;
The movable charging unit,
A power receiving terminal having a detachable function with the power transmitting terminal,
A connector detector for detecting that the connector is in a predetermined position,
Based on a movement command from the control device to the movable charging unit, the connector detector confirms that the connector is in a predetermined position, after disconnecting the power transmission terminal and the power receiving terminal, Power supply system characterized in that the movable charging unit starts moving. The power supply system according to claim 1, wherein
The power supply system, wherein the movable charging unit includes a power storage device that stores power of a drive unit that drives the movable charging unit. The power supply system according to claim 2, wherein
There are a plurality of movable charging parts,
The control device determines the movement priority order of the plurality of movable charging units by using at least one of a distance between the movable charging unit and a parking space of a movement destination and an amount of electricity stored in the power storage device. The characteristic power supply system. The power supply system according to any one of claims 1 to 3,
A power transmission coil connected to the power transmission terminal,
A power receiving coil connected to the power receiving terminal,
The power transmission terminal has a function of converting first DC power from the DC power line into first AC power,
The power transmission terminal transmits the first AC power to the power transmission coil, the power reception coil receives the first AC power transmitted from the power transmission coil, and the power reception terminal transmits the first AC power to the power reception coil. 1 has a function of converting AC power into second DC power,
The power receiving system, wherein the power receiving terminal supplies the second DC power to the vehicle via the connector. The power supply system according to any one of claims 1 to 3,
The movable charging unit has a power conversion device between the power receiving terminal and the connector, and the power conversion device outputs DC power that is the output of the power receiving terminal according to the load of the vehicle. A power supply system, which converts DC power or AC power of different voltages and outputs the power to the connector. A charger main body having a control device that controls the amount of power supply, a DC power line supplied with power from the charger main body, a power transmission terminal connected to the DC power line, and a movable movable charging unit. A connector provided at an end of a cable extending from the movable charging unit and supplying DC power of the DC power line to a vehicle,
The movable charging unit is a power supply method for a power supply system having a power receiving terminal having a function of attaching to and detaching from the power transmitting terminal, and a connector detector that detects that the connector is at a predetermined position,
The control device is
Check the connection between the power transmission terminal and the power receiving terminal,
Check the connection of the connector to the vehicle,
A method of supplying power, wherein charging of the vehicle is started after confirming that the charging button of the movable charging unit is pressed. The power supply method according to claim 6, wherein
The control device is
While charging the vehicle, check the state of charge to the vehicle,
When charging to the vehicle is completed, unlock the lock function of the connector,
An electric power supply method comprising instructing the movable charging unit to return the connector. The power supply method according to claim 6, wherein
The control device is
When a move command is received from the movable charging unit,
Make sure the connector is in place,
Disconnecting the power transmission terminal and the power receiving terminal,
A power supply method comprising: issuing a movement command to the movable charging unit.