JP4953147B1 - Power supply system with anti-theft function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a problem that a power feeding circuit cannot be cut off reliably when a plug is replaced with an unlicensed power consumer instead of an authoritative power consumer during power feeding, or originally a sufficient power theft There was a problem that could not be prevented.
SOLUTION: An electromagnetic relay 27 provided in the middle of a power supply circuit 25 for opening and closing the power supply circuit 25, a circuit switch control means 29 for controlling the electromagnetic relay 27, and a signal for inputting a signal output from the electric vehicle EV. When the connection to the electric vehicle EV is interrupted during power feeding and a signal to be continuously input is not input to the microcomputer 35, the electric circuit switch control means 29 controls the electromagnetic relay 27. Unauthorized power feeding is prevented by blocking the power feeding circuit 25.
[Selection] Figure 2

Description

  The present invention relates to a power supply system with an anti-theft function that prevents electric theft by unauthorized plug replacement using a signal output from any one of an electric vehicle, an electric vehicle battery storage device, and a vending machine.

  With the widespread use of electric vehicles, it is expected that power will be stolen from outlets installed in homes, buildings, etc. or plugs of vending machines will be replaced. In addition, although charging stations have begun to be installed in shopping centers, parking lots, etc., countermeasures against theft are not sufficient, and technology for preventing theft is thought to increase social demand. Therefore, outlets for preventing theft, charging stands for charging electric vehicles, charging devices, and the like have been developed.

  For example, when used in a garage at home, a charging device has been disclosed that is provided with a lock mechanism for preventing falling off during charging and prevents damage to a charging cord or the like due to falling off during charging. In the charging device, a charging cord is connected between the charging connector of the electric vehicle and the charging device. (For example, patent document 1).

  However, the lock mechanism of this reference is originally intended to prevent falling out, and has a problem that it is not possible to prevent power theft due to unauthorized plug replacement. Even if the lock mechanism of this reference is a lock mechanism that can prevent theft, it is effective for an electric vehicle that does not have this configuration because it requires a configuration corresponding to the lock mechanism on the electric vehicle side. Does not function properly and cannot prevent power theft due to unauthorized plug replacement.

  In addition, as a prior art for preventing unauthorized plug replacement, power line carrier communication is performed between the PLC block of the power outlet unit and the PLC block of the power plug unit, and whether power line carrier communication is established or insertion of the power plug is detected. If not, a power supply device that stops energization is disclosed. (For example, Patent Document 2)

  However, in this reference, in the form in which the outlet and the electric device are connected by a single power cable, even if the power cable is replaced with a powerless electric device on the electric device side during power feeding, There is a problem that energization cannot be stopped and theft due to unauthorized plug replacement cannot be prevented.

  In addition, as a conventional technology for preventing unauthorized plug replacement, the power consumption after power supply is greatly reduced from the electricity usage (the electricity usage per hour, maximum value, pattern of change due to time and season, etc.) When deviating, it is determined that theft has occurred via a three-pronged socket or the like, and a theft prevention system is disclosed that allows the monitoring and control device to control the switch to cut off the power. (For example, Patent Document 3)

  However, this reference is not originally intended to prevent unauthorized plug replacement, and in the configuration for detecting the presence or absence of unauthorized plug replacement based on whether or not the amount of electricity used has deviated significantly as described above, is the title. Even if unauthorized power supply is performed from an electrical product to an unlicensed electrical product by unauthorized plug replacement, in general, the amount of electricity used does not significantly deviate from the stored amount of electricity used. Inadequate plug replacement cannot be detected sufficiently.

  In addition, as a conventional technique for preventing unauthorized plug replacement, authentication is performed between an authentication management device provided in a house and a charging destination, and charging that permits charging of the storage battery is permitted on the condition that the authentication has been established. The system is patented. (For example, Patent Document 4)

  However, this reference does not detect unauthorized plug replacement and shuts off the power on the power supply side (outlet side), and has a problem that it is not possible to prevent power theft due to unauthorized plug replacement.

Moreover, when the main body part attachment / detachment detection sensor detects that the main body part has been removed, an outdoor outlet is disclosed in which a control device controls a relay to stop power feeding (for example, Patent Document 5). However, this outdoor outlet is intended to prevent the person trying to steal power from removing the main body of the outlet and stealing power directly from the power line inside the outlet. There is a problem that can not be. In the prior arts of Patent Documents 1 to 5 , it is possible to prevent power theft using a signal output from a power consumer, or to freely supply and stop power using a signal output from the power consumer. Can not be controlled.

Japanese Patent Laid-Open No. 10-262303 JP 2009-284749 A JP 2010-68601 A JP 2008-61432 A JP 2011-8947 A

  In the above-described prior art, when an attempt is made to replace the plug with an unlicensed power consumer instead of the authoritative power consumer during power feeding, the power feeding circuit cannot be shut off reliably, or originally theft power There was a problem that could not be sufficiently prevented. In view of the above points, an object of the present invention is to provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement.

In order to achieve the above object, the present invention provides an anti-theft function that prevents unauthorized power supply to an unlicensed power consumer in place of the authoritative power consumer. In the power supply system;
An electric circuit switch that is provided in the middle of the power supply circuit and opens and closes the power supply circuit;
An electric circuit switch control means for controlling the electric circuit switch;
Wiring provided with both a transmission line for transmitting power supplied from the power supply circuit to the authoritative power consumer and a signal line for transmitting a continuous signal output from the authoritative power consumer to a predetermined signal input unit Instruments,
A predetermined signal input unit for inputting a continuous signal transmitted from a power consumer having authority over a wiring device;
With
When the connection of the plug provided on the connection device is interrupted and a continuous signal to be input during connection is not input to the signal input section, the circuit switch control means controls the circuit switch to shut off the power supply circuit. By doing so, it is configured to prevent unauthorized power supply due to plug replacement.

In the second aspect of the present invention, after the continuous signal is not input to the signal input unit and the electric circuit switch control means cuts off the power supply circuit in the first aspect, the next power consumer is connected. Until the power supply circuit is cut off.

  According to this, when an unauthorized user attempts to steal power during connection and interrupts the connection of the plug, transmission of a continuous signal is interrupted. When no continuous signal is input to the signal input unit, the electric circuit switch control means controls the electric circuit switch to cut off the power supply circuit. That is, since the invention according to claim 1 is configured to reliably stop the power supply when the connection of the plug is interrupted, it replaces the trouble of the prior art, that is, the power consumer that is the authoritative during the power supply. Thus, it is possible to solve the problem that the power feeding circuit cannot be surely interrupted when the plug replacement to the powerless power consumer is attempted, or the problem that theft power cannot be prevented sufficiently.

  As a result, it is possible to provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement.

  In addition, according to the said structure, the electric power feeding system with an anti-theft function which controls an electric circuit switch based on the continuous signal transmitted from the authoritative power consumer can be provided.

According to a third aspect of the present invention, in the first or second aspect , the plug connected to the authoritative power consumer is connected to the power supply side coil for transmitting the power transmitted by the transmission line and the signal line. And a receiving unit for receiving a predetermined optical signal,
The authoritative power consumer has a power receiving coil that is magnetically connected to the power supply coil, and a transmitter that converts a continuous signal into a predetermined optical signal and transmits it.
It is configured to perform non-contact power transmission between the power supply side coil and the power receiving side coil, and further, the transmission of the continuous signal is configured so that the transmission unit and the reception unit are partly signal transmission paths. To do.

  According to this, at the time of power feeding, it is possible to avoid the risk of electric shock due to the connection part of the wiring device getting wet with rain water in rainy weather. In addition, since the optical signal is used, when using the PLC, that is, when there is a concern about the influence of leaked radio waves, it is possible to solve the problem that cannot be used near medical devices and wireless communication devices. .

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, power transmission is performed by a power source side coil provided in a plug connected to the authoritative power consumer, and a power source provided in the authoritative power consumer. It is configured to be performed by non-contact power transmission means for performing non-contact power transmission between the side coil and the power receiving side coil that is magnetically connected,
The transmission of the continuous signal is characterized in that the power supply side coil and the power receiving side coil are partially used as a signal transmission path .

  According to this, at the time of power feeding, it is possible to avoid the risk of electric shock due to the connection part of the wiring device getting wet with rain water in rainy weather. In addition, since power line communication is used, the configuration of the connection portion is not complicated.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the continuous signal is a power supply control signal that controls disconnection and connection of the electric circuit switch in a state where the power transmission line is connected. Yes,
The electric circuit switch control means controls the disconnection and connection of the electric circuit switch based on the power supply control signal.

  According to this, it is possible to provide a highly functional power supply system with an anti-theft function that can perform power supply and power supply stop based on a power supply control signal from the power consumer that has the title.

As in the sixth aspect of the invention, in the power supply system with an anti-theft function according to any one of the first to fifth aspects, a predetermined intermittent signal may be used instead of the continuous signal.

The power supply system with an anti-theft function according to any one of claims 1 to 6 , as in the invention described in claim 7 , supplies power to the charging station and the electric vehicle for charging by charging the electric vehicle. Any one of the power feeding systems to be used may be used.

  In the invention described in claim 8, in any one of claims 1 to 7, when power is supplied, the encryption key stored in the authoritative power consumer is collated, and when the encryption key matches, It is characterized by authenticating that the power consumer is the authoritative power consumer.

  According to this, an authorized power consumer can be automatically authenticated, and an unauthorized power consumer can be reliably excluded. As a result, it is possible to provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement.

  According to a ninth aspect of the present invention, in any one of the first to seventh aspects, when the power supply is performed, the encryption key of a predetermined RFID tag is collated, and if the encryption key matches, the power consumer is It is characterized by authenticating that it is a power consumer with the title.

  According to this, it is possible to provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement without automatically authenticating the power consumer.

It is a front view of the electric power feeding system with a theft prevention function by 1st Embodiment. It is a block diagram of the electric power feeding system with a theft prevention function by 1st Embodiment. It is a control flowchart of the electric power feeding system with a theft prevention function by 1st Embodiment. It is an action | operation figure of the electric power feeding system with a theft prevention function by 1st Embodiment. It is a block diagram of the electric power feeding system with a theft prevention function by 2nd Embodiment. It is a control flowchart of the electric power feeding system with a theft prevention function by 2nd Embodiment. It is a block diagram of the electric power feeding system with a theft prevention function by 3rd Embodiment. It is a control flowchart of the electric power feeding system with a theft prevention function by 3rd Embodiment. FIG. 10 is a first operation diagram of a charging ECU, a microcomputer, and an electromagnetic relay in a power supply system with an anti-theft function according to a fourth embodiment. FIG. 10 is a second operation diagram of the charging ECU, the microcomputer, and the electromagnetic relay in the power supply system with an anti-theft function according to the fourth embodiment. It is a block diagram of the electric power feeding system with a theft prevention function by 5th Embodiment. It is a block diagram of the electric power feeding system with a theft prevention function by 6th Embodiment.

  First, terms used in the present invention will be described. Some power consumers have a power cable integrally provided, and some have a power cable detachable. A power supply cable provided integrally is referred to as a power consumer including the power supply cable. Those provided with a detachable power cable are referred to as power consumers except for the power cable. The power consumer means any one of an electric vehicle, an electric vehicle battery storage device, and a vending machine.

  The authoritative power consumer refers to a power consumer identified as a power consumer used by a legitimate user. The plug refers to a connecting portion formed at the end of the power cable, and examples thereof include a power plug and a connector described later. As will be described later, this plug may include a coil that performs non-contact power transmission. Moreover, the plug replacement to the power consumer is a concept including plug replacement at each connection portion of the power cable including the plug of the connection portion with the power consumer. When the above-mentioned authorized power consumer is an electric vehicle, the power supply system with an anti-theft function of the present invention functions as a charging system that charges the electric vehicle.

(First embodiment)
This is an embodiment in which the power supply system with a theft prevention function 11 is applied to an outlet of a home, an apartment house or the like. As shown in FIG. 1, an outlet 13, a power theft prevention unit 15, and an input device 17 are provided, and theft is prevented based on a continuous signal output from the electric vehicle EV side via the power cable 19.

  As shown in FIG. 2, the outlet 13 includes a terminal block 21. The terminal block 21 is provided with a plug receptacle 23 for connecting and holding a power plug 53 described later. Connected to the plug receiver 23 is a power supply circuit 25 for supplying power.

  The theft prevention unit 15 includes an electromagnetic relay 27, an electric circuit switch control unit 29, a DC power supply 31, and a setting change unit 33.

  The electromagnetic relay 27 turns on / off the power supply, and is disposed in the middle of the power supply circuit 25. When DC power is supplied to the coil 27a and the coil 27a is excited, the mechanical contact 27b is closed and relaying is performed. The electromagnetic relay 27 constitutes an example of an electric circuit switch according to the present invention. The electromagnetic relay 27 may be provided on the upstream side of the theft prevention unit 15. In addition, the electric circuit switch of this invention is not limited to an electromagnetic relay. For example, an SSR (solid state relay) or a switch may be used.

  The electric circuit switch control means 29 includes a microcomputer 35, an interface 37, a driver 39, and a timer circuit 41. The memory 43 in the microcomputer 35 controls the electromagnetic relay 27 from the input state of a continuous signal transmitted from the charging ECU 55 of the electric vehicle EV described later, the verification result of the encryption key transmitted from the charging ECU 55, and the like. The program and encryption key are written. By operating according to this control program, theft is prevented by unauthorized plug replacement. In the first embodiment, the microcomputer 35 also serves as the signal input unit of the present invention. The continuous signal may be input to the microcomputer 35 after being received by a predetermined input / output interface.

  The interface 37 is a signal transmission circuit for operating the coil 27 a of the electromagnetic relay 27. The driver 39 excites the coil 27 a of the electromagnetic relay 27 based on the excitation signal of the interface 37. The setting change means 33 has a function of changing a plug set allowable time T1 and a power supply allowable time T2 described later.

  The power supply system with anti-theft function 11 described above is supplied with predetermined power from a commercial power source, solar power generation, or the like. The predetermined power is supplied to the plug receiver 23 via the electromagnetic relay 27 and the terminal block 21. The predetermined power is branched upstream of the electromagnetic relay 27 and supplied to the DC power supply 31.

  Further, the input device 17 includes an operation unit 45. The operation unit 45 includes a start button, a setting completion button, a stop button, a power supply lamp, a power supply stop lamp, and an authentication completion lamp, and can perform various operations and displays such as control start, setting, and stop.

  Next, the plug set allowable time T1 and the power supply allowable time T2 will be described. The plug set allowable time T1 is an allowable time until the anti-theft control is performed. The allowable power supply time T2 is an allowable time for supplying power. The plug set allowable time T1 is set to a time short enough to complete the setting of the power plug.

  The power cable 19 is, for example, one cable component in which a power line 47 and a signal line 49 are housed in a covering material such as carbon, and a connector 51 and a power plug 53 are provided at the end. In order to cope with a noise environment, the signal line 49 is a twisted pair (twisted pair wire), and further has a covering structure having an electromagnetic seal function, thereby providing a predetermined shielding effect. The power cable 19, the power line 47, and the signal line 49 constitute an example of the wiring device of the present invention, an example of the power transmission line, and an example of the signal line of the present invention, respectively.

  In addition, the electric vehicle EV is provided with a charging connector EV1, a charging ECU (Electronic Control Unit) 55, and a CAN (Controller Area Network) 57. A control program for charging monitoring is written in the memory 59 in the charging ECU 55. The charging ECU 55 operates according to the charging monitoring control program to perform processing such as charging monitoring state (whether charging is in progress) of a battery (not shown), charging amount monitoring (remaining battery amount confirmation), and the like. .

A connector 51 and a power plug 53 are respectively connected to a charging connector EV1 of the electric vehicle EV,
When connected to the outlet 13, a continuous signal is output from the communication circuit 61 of the charging ECU 55 through a predetermined procedure. The output continuous signal is input to the microcomputer 35 via the CAN 57, the signal line 49, and the signal line 63. The microcomputer 35 determines whether there is a continuous signal input. When a continuous signal is input to the microcomputer 35, the microcomputer 35 receives this and outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27, and the coil 27 a via the interface 37 and the driver 39. To the excited state. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started. When power supply to the plug receiver 23 is started, electric power is transmitted to the electric vehicle EV via the power line 47 of the power cable 19 and is supplied to an in-vehicle charger or battery (not shown) of the electric vehicle EV.

  Next, the control procedure of the first embodiment will be described. FIG. 3 shows an example of a control procedure of the power supply system 11 with an anti-theft function in the first embodiment.

  In step S10, the start button of the operation unit 45 is pressed. When the start button is pressed, the power supply stop lamp lights up.

  In step S20, the plug set allowable time T1 and the power supply allowable time T2 are initialized, and the electromagnetic relay 27 is controlled to be turned off. The timer circuit 41 starts timing.

  In step S30, it is determined whether the plug set allowable time T1 has elapsed. When the plug set allowable time T1 has elapsed, the process proceeds to step S40. If the plug set allowable time T1 has not elapsed, the system waits. The authorized user connects the connector 51 and the power plug 53 of the power cable 19 to the charging connector EV1 and the outlet 13 of the electric vehicle EV, respectively, within the plug set allowable time T1.

  In step S40, it is determined whether or not the encryption keys match. The encryption key is transmitted via the signal line 49 and the signal line 63 and verified by the microcomputer 35 of the electric circuit switch control means 29. As a result of the collation, if the encryption keys match, the process proceeds to step S50. If the encryption keys do not match, the process proceeds to step S100.

  In step S50, the authentication lamp is turned on. It progresses to step S60 after control.

  In step S60, the electromagnetic relay 27 is controlled to be turned on. The microcomputer 35 outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27 and activates the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started. After processing, the process proceeds to step S70.

  In step S70, the power supply stop lamp is turned off and the power supply lamp is turned on. After processing, the process proceeds to step S80.

  In step S80, it is determined whether or not the allowable power supply time T2 has elapsed. When the power supply allowable time T2 has elapsed, the process proceeds to step S100. If the power supply allowable time T2 has not elapsed, the process proceeds to step S90.

In step S90, it is determined whether or not the microcomputer 35 is inputting a continuous signal. When the microcomputer 35 is inputting a continuous signal, it is assumed that the power plug 53 and the outlet 13 are connected, and power supply is maintained. If the continuous signal is not input to the microcomputer 35, it is determined that there is a possibility that unauthorized power supply to an unlicensed power consumer by replacing the power plug 53 is attempted instead of the proprietary electric vehicle EV. The process proceeds to step S100.

  In step S100, the electromagnetic relay 27 is controlled to be turned off. The microcomputer 35 outputs a command signal for deactivating the coil 27 a of the electromagnetic relay 27, and de-energizes the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is opened and the power supply to the plug receiver 23 is stopped. After processing, the process proceeds to step S110.

  In step SS110, control is stopped.

  Here, the operation of the charging ECU 55, the microcomputer 35, and the electromagnetic relay 27 will be described with reference to FIG.

(1) When a continuous signal is output at point A, the continuous signal is input to the electric circuit switch control means 29. In response to this, the microcomputer 35 outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27, and brings the coil 27 a into the energized state via the interface 37 and the driver 39. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started.
(2) At point B, if at least one of the connector 51 and the power plug 53 is removed during power feeding, no continuous signal is input to the electric circuit switch control means 29. In response to this, the microcomputer 35 outputs a command signal for deactivating the coil 27 a of the electromagnetic relay 27, and de-energizes the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is opened and the power supply to the plug receiver 23 is stopped. This prevents power theft due to unauthorized plug replacement.

  According to the above-described configuration, when a non-authorized user attempts to steal power during connection and the connection between the connector 51 and the charging connector EV1 and the power plug 53 and the plug receiver 23 is interrupted, the power is output from the electric vehicle EV having the authority. Transmission of continuous signals is blocked. When the continuous signal is not input to the microcomputer 33, the electric circuit switch control means 29 can receive this and control the electromagnetic relay 27 to cut off the power supply electric circuit 25. In other words, when the connection of the plug is interrupted, the power supply is surely stopped, so that the malfunction of the prior art, that is, the plug to the unlicensed power consumer instead of the authoritative electric vehicle during power feeding When the replacement is attempted, it is possible to solve the problem that the power feeding circuit cannot be cut off reliably, or the problem that theft power cannot be prevented sufficiently.

  As a result, in view of the above points, the present invention can provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement.

  In the first embodiment, the connector 51 and the power plug 53 of the power cable 19 are connected to the charging connector EV1 and the outlet 13 of the electric vehicle EV, respectively, and then between the charging ECU 55 and the microcomputer 35. Since automatic authentication is performed in this way, it is possible to reliably eliminate unauthorized power consumers.

(Second Embodiment)
This is an embodiment in which the power supply system with a theft prevention function 11 is applied to a charging stand (charging station). The second embodiment is a configuration in which the connection portion of the power cable 19 described in the first embodiment is changed and further changed from automatic authentication to manual authentication. Similar parts are denoted by the same reference numerals. Detailed description will be omitted.

As shown in FIG. 5, the charging stand JS is integrally provided with a power cable 19, and a connector 51 is provided at one end of the power cable 19. The charging station JS includes an electromagnetic relay 27 that opens and closes the power supply circuit 25, an electric circuit switch control unit 29 that controls the electromagnetic relay 27, a DC power supply 31, a setting change unit 33, and an RFID (Radio Frequency IDentification) read / write device 65. Is provided.

  Further, in the electric circuit switch control means 29, the memory 43 in the microcomputer 35 stores the identification information of the RFID tag 67 read by the RFID read / write device 65 and the continuous signal transmitted from the charging ECU 55. A control program for controlling the electromagnetic relay 27 is written according to the input status and the like. Theft is prevented by operating according to this control program.

  The RFID tag 67 is a passive tag that operates using radio waves from the RFID read / write device 65 as an energy source by an electromagnetic induction method. The RFID tag 67 is disposed on the mobile phone T, for example. In addition to the mobile phone T, the RFID tag 67 may be arranged on a movable structure such as a car key, a card, a portable information terminal, a watch, and a stuffed toy. The RFID read / write device 65 can read identification information, write data, and the like with respect to the RFID tag 67. The RFID tag 67 described above may be an active tag or a semi-active tag. Authentication of identification information may be mutual authentication from the viewpoint of security.

  When the connector 51 is connected to the charging connector EV1 of the electric vehicle EV, a continuous signal is transmitted from the communication circuit 61 of the charging ECU 55 through a predetermined procedure. The transmitted continuous signal is transmitted to the microcomputer 35 via the CAN 57, the signal line 49, and the signal line 63 in addition to the motor control ECU that controls the drive motor. The microcomputer 35 determines whether there is a continuous signal input. When a continuous signal is input to the microcomputer 35, the microcomputer 35 receives this and outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27, and the coil 27 a via the interface 37 and the driver 39. To the excited state. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started. When power supply to the plug receiver 23 is started, electric power is transmitted to the electric vehicle EV via the power line 47 of the power cable 19 and is supplied to an in-vehicle charger or battery (not shown) of the electric vehicle EV.

  If the connector 51 is removed during power feeding, no continuous signal is input to the microcomputer 35. Then, when the continuous signal is not input to the microcomputer 35, it is determined that there is a possibility that unauthorized power supply to an unlicensed power consumer by replacing the connector 51 is attempted instead of the proprietary electric vehicle EV. The electric circuit switch control means 29 controls the electromagnetic relay 27 to stop the power supply to the plug receiver 23. As a result, it is possible to prevent power theft due to unauthorized plug replacement.

  Next, the control procedure of the second embodiment will be described. In FIG. 6, an example of the control procedure of the electric power feeding system 11 with an anti-theft function in 2nd Embodiment is shown.

  In step S10, the start button of the operation unit 45 is pressed. When the start button is pressed, the power supply stop lamp lights up. After control, the process proceeds to step S20.

  In step S20, the identification information input allowable time T3, the plug set allowable time T1, and the power supply allowable time T2 are initialized, and the electromagnetic relay 27 is controlled to be turned off. The timer circuit 41 starts timing. After control, the process proceeds to step S30.

In step S30, it is determined whether the identification information input allowable time T3 has elapsed. The authorized user brings the mobile phone T in which the RFID tag 67 is built close to the RFID read / write device 65 before the identification information input allowable time T3 ends, and performs an authentication operation. If the identification information input allowable time T3 has elapsed, the process proceeds to step S110. If the identification information input allowable time T3 has not elapsed, the process proceeds to step S40.

  In step S40, the identification information is collated. If the identification information is authenticated as a result of the collation, the process proceeds to step S50. If the identification information is not authenticated, the process proceeds to step S110.

  In step S50, the authentication completion lamp is turned on. It progresses to step S60 after control.

  In step S60, it is determined whether the plug set allowable time T1 has elapsed. If it is within the plug set allowable time T1, it waits. If the plug set allowable time T1 has elapsed, the process proceeds to step S70. The authorized user inserts the battery into the charging connector EV1 of the connector 51 electric vehicle EV within the plug set allowable time T1. Even if the plug set allowable time T1 has not elapsed after the end of step S50, when the plug set is completed and the setting completion button of the operation unit 45 is pressed, an interrupt process is immediately performed, and the process goes to step 70. move on.

  In step S70, the power supply stop lamp is turned off and the power supply lamp is turned on. After processing, the process proceeds to step S80.

  In step S80, it is determined whether or not the allowable power supply time T2 has elapsed. When the power supply allowable time T2 has elapsed, the process proceeds to step S110. If the power supply allowable time T2 has not elapsed, the process proceeds to step S90.

  In step S90, it is determined whether or not the connector 51 and the charging connector EV1 are connected. If a continuous signal is input to the microcomputer 35, it is determined that the connector 51 and the charging connector EV1 are connected, and the process proceeds to step S100. If the microcomputer 35 cannot detect the continuous signal, it is determined that there is a possibility that unauthorized power supply to the unlicensed power consumer by replacing the connector 51 is attempted instead of the proprietary electric vehicle EV. Proceed to step S110.

  In step S100, the electromagnetic relay 27 is controlled to be turned on. The microcomputer 35 outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27 and activates the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27 b is closed and power is supplied to the plug receiver 23. After processing, the process proceeds to step S80.

  In step S110, the electromagnetic relay 27 is controlled to be turned off. The microcomputer 35 outputs a command signal for deactivating the coil 27 a of the electromagnetic relay 27, and de-energizes the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is opened and the power supply to the plug receiver 23 is stopped. After processing, the process proceeds to step S120.

  In step S120, control is stopped.

  According to the above configuration, it is possible to provide a power supply system with an anti-theft function that can sufficiently prevent unauthorized power supply due to plug replacement in a charging stand for an electric vehicle.

  In addition, there exists an advantage which does not need to provide an automatic authentication means for every electric vehicle by setting it as the manual authentication using an RFID tag.

(Third embodiment)
This is an embodiment when the power consumer is a vending machine. In the third embodiment, automatic authentication is performed as in the first embodiment. The same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, a power cable 19 is integrally provided in the vending machine VM. The power cable 19 is provided with a power line 47 and a signal line 49, and a power plug 53 is disposed at the end. The vending machine VM is provided with a direct current power source 69 and a control device 71, and the control device 71 is provided with a memory 73 and a communication circuit 75.

  When the power cable 19 is connected to the outlet 13, the DC power source 69 of the vending machine VM is supplied with power, and the control device 71 can be driven. In the memory 73, a control program for controlling various operations of the vending machine VM and an encryption key are written.

  On the other hand, the outlet 13 is provided with a blade detection sensor 77 for detecting the plug blade of the power plug 53 when the power plug 53 is inserted into the outlet 13. When the power plug 53 is inserted into the outlet 13, the blade detection sensor 77 detects the plug blade of the power plug 53.

  Next, the control procedure of the third embodiment will be described. In FIG. 8, an example of the control procedure of the electric power feeding system 11 with an anti-theft function in 3rd Embodiment is shown.

  In step S10, the start button of the operation unit 45 is pressed. When the start button is pressed, the power supply lamp lights up.

  In step S20, the plug set allowable time T1, the power supply allowable time T2, and the identification information input allowable time T3 are initialized, and the electromagnetic relay 27 is controlled to be turned off. The timer circuit 41 starts timing.

  In step S30, it is determined whether the plug set allowable time T1 has elapsed. When the plug set allowable time T1 has elapsed, the process proceeds to step S40. If the plug set allowable time T1 has not elapsed, the system waits. The authorized user connects the connector 51 and the power plug 53 of the power cable 19 to the connector VM1 and the outlet 13 of the vending machine VM, respectively, within the plug set allowable time T1.

  In step S <b> 40, it is determined whether or not the plug blade of the power plug 53 has been inserted into the plug receiver 23. When the blade detection sensor 77 detects the plug blade of the power plug 53, the process proceeds to step S50. If the blade detection sensor 77 cannot detect the plug blade of the power plug 53, the process proceeds to step S100.

  In step S50, power supply is started. The microcomputer 35 outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27 and activates the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started. After processing, the process proceeds to step S60.

  In step S60, the power supply stop lamp is turned off and the power supply lamp is turned on. After processing, the process proceeds to step S70.

In step S70, it is determined whether the identification information matches. When power is supplied to the vending machine VM, power is supplied to the control device 71. At this time, the identification information is read from the memory 73 and the identification information is transmitted from the communication circuit 75. The identification information is transmitted via the signal line 49 and the signal line 63 and collated by the microcomputer 33 of the electric circuit switch control means 29. If the identification information matches as a result of the collation, the process proceeds to step S80. If the identification information does not match, the process proceeds to step S100.

  In step S80, the authentication completion lamp is turned on. It progresses to step S90 after control.

  In step S90, it is determined whether or not the microcomputer 35 is inputting a continuous signal. When the microcomputer 35 is inputting a continuous signal, it is assumed that the power plug 53 and the outlet 13 are connected, and power supply is maintained. If no continuous signal is input to the microcomputer 35, it is determined that there is a possibility that unauthorized power supply to an unlicensed power consumer by replacing the power plug 53 is attempted instead of the proprietary vending machine VM. Then, the process proceeds to step S100.

  In step S100, the electromagnetic relay 27 is controlled to be turned off. The microcomputer 35 outputs a command signal for deactivating the coil 27 a of the electromagnetic relay 27, and de-energizes the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is opened and the power supply to the plug receiver 23 is stopped. After processing, the process proceeds to step S110.

  In step SS110, control is stopped.

(Fourth embodiment)
In the first embodiment described above, the continuous signal is used as the connection detection unit. However, the continuous signal may be used as a power supply control signal for controlling power supply and power supply stop in a state where the power transmission line is connected. The apparatus configuration in the fourth embodiment is the same as that in FIG. 2 described in the first embodiment, and the operation of the charging ECU 55, the microcomputer 35, and the electromagnetic relay 27 will be described with reference to FIG.

(1) In the state where the power plug 19 is connected, if a continuous signal (power supply control signal) is output at point A, a continuous signal (power supply control signal) is input to the microcomputer 35. In response to this, the microcomputer 35 outputs a command signal for energizing the coil 27 a of the electromagnetic relay 27, and brings the coil 27 a into the energized state via the interface 37 and the driver 39. At that time, the mechanical contact 27b is closed and power supply to the plug receiver 23 is started.
(2) When the output of the continuous signal (power feeding control signal) is stopped at point B, the continuous signal (power feeding control signal) is not input to the microcomputer 35. In response to this, the microcomputer 35 outputs a command signal for deactivating the coil 27 a of the electromagnetic relay 27, and de-energizes the coil 27 a via the interface 37 and the driver 39. At that time, the mechanical contact 27b is opened and the power supply to the plug receiver 23 is stopped.
(3) When a continuous signal (power feeding control signal) is output at point C, the microcomputer 35 receives this and resumes power feeding in the same procedure as in the above-mentioned item (1).
(4) During power feeding, when the connector 51 is disconnected from the charging connector EV1 of the electric vehicle EV or when the power plug 53 is disconnected from the outlet 13, a continuous signal (power feeding control signal) is sent to the microcomputer 35. Is no longer entered. In response to this, the microcomputer 35 stops the power supply by the same procedure as the above-mentioned item (2). As a result, it is possible to prevent power theft due to unauthorized plug replacement.

According to the above-described configuration, it is possible to provide a highly functional power supply system with an anti-theft function that can control power supply from the right electric vehicle EV side. In addition, since the electromagnetic relay 27 can be controlled to be disconnected and connected freely from the electric vehicle EV with the power plug 19 connected, a continuous signal (power supply) can be immediately provided when there is a problem such as leakage. Control signal) can be cut off to prevent electric shock, and damage to the electric vehicle EV can be minimized.

  Note that a plurality of continuous signals (power feeding control signals) may be used as the continuous signal. For example, either a power supply signal that is output during power supply or a stop signal that stops power supply (both are assumed to be continuous signals) is output, and either of these signals is output Nevertheless, the power supply may be stopped when the microcomputer 35 cannot confirm the input. FIG. 10 shows operations of the charging ECU 55, the microcomputer 35, and the electromagnetic relay 27.

(Fifth embodiment)
In the first to fourth embodiments, the continuous signal is transmitted by wire. However, the continuous signal is converted into an optical signal and transmitted at the connection portion between the electric vehicle EV and the power cable. May be.

  As illustrated in FIG. 11, a transmission unit 79 that converts a continuous signal into an optical signal and transmits the signal is provided in the charging connector EV <b> 1 of the electric vehicle EV, and a reception unit 81 that receives the optical signal is provided in the connector 51. The transmission unit 79 is provided with a modulation unit that modulates a continuous signal into an optical signal, an infrared LED that transmits the optical signal, and the reception unit 81 is a light receiving unit that receives the optical signal transmitted from the infrared LED, A demodulator for demodulating the received optical signal is provided. The continuous signal output from the charging ECU 55 is modulated by the modulation unit of the transmission unit 79 and transmitted from the infrared LED to the reception unit 81 as infrared rays. Infrared light transmitted from the infrared LED is received by the light receiving unit, demodulated into an electrical signal by the demodulation unit, and transmitted to the microcomputer 35 via the signal line 49.

  Note that the light source of the optical signal is not limited to infrared rays, and electromagnetic waves in a region used for so-called optical wireless transmission may be used, and specifically, a laser or visible light may be used. Moreover, a light projecting unit may be provided in the charging connector EV1 of the electric vehicle EV, and a light receiving sensor may be provided in the connector to transmit and receive a continuous signal.

(Sixth embodiment)
In the fifth embodiment described above, power transmission is performed by wire, but may be performed by non-contact power transmission. As shown in FIG. 12, the connector 51 is provided with a power supply side coil (primary coil) 83, the electric vehicle EV is provided with a power receiving side coil (secondary coil) 85, and is magnetically connected between the two. You may carry out by electric power transmission.

  According to the above configuration, the connector 51 can be easily attached and detached, so that troublesome connection work such as wired connection and wear of the connection part can be avoided. The risk of electric shock can be avoided.

(Seventh embodiment)
In the sixth embodiment, a continuous signal is converted into an optical signal and transmitted / received between the power consumer and the plug, which are the authoritative power, but the continuous signal is transmitted without using the optical signal. and (primary coil) 83, the power receiving side coil (secondary coil) 85 and may be a signal transmission path. The continuous signal output from the charging ECU 55 is superimposed and transmitted from the power receiving side coil (secondary coil) 85 to the power source side coil (primary coil) 83, and then the continuous signal is extracted.

In the fifth embodiment, an optical signal is used. In the seventh embodiment, power line communication is used.
The continuous signal is transmitted wirelessly. However, the present invention is not limited to this, and the continuous signal may be transmitted wirelessly between the authorized power consumer and the plug.

(Eighth embodiment)
In the first to seventh embodiments, the signal output from the authoritative power consumer is a continuous signal, but the present invention is not limited to this. For example, when the pulse signal to turn on the circuit switch or the pulse signal to turn off (intermittent signal) is output from the power consumer that has the title, and the pulse signal to be input during power feeding is not input to the signal input unit, The electric circuit switch control means may control the electric circuit switch to cut off the power supply electric circuit. The pulse signals described above do not necessarily have to be at regular intervals. The output interval of the pulse signal is set to a time shorter than the plug replacement time TS when an unauthorized person performs plug replacement.

  If there is a possibility that the output interval of the pulse signal is longer than the plug replacement time TS, it is detected by a sensor or the like that the connection part such as the power plug or connector has been removed during the power supply. The addition of a function for interrupting the electric circuit can surely prevent theft.

(Other embodiments)
In the above-described embodiment, the electric vehicle and the vending machine have been described as examples. However, the electric vehicle battery storage device may be used. Further, the charging station described in the second embodiment may be a charging station of a type corresponding to so-called rapid charging.

  In the above-described embodiment, the RFID tag and the RFID read / write device are used as the authentication method. However, the personal identification number may be key-input. Further, a predetermined signal (a predetermined encryption, encryption key, control signal for starting anti-theft power control, etc.) may be transmitted by either infrared rays or radio waves. Also, a fingerprint may be read. Moreover, you may make it read the magnetic information of a magnetic card and a magnetic card.

  A plurality of power supply systems with an anti-theft function may be provided so that the host computer can grasp the anti-theft situation.

  Further, the shape of the outlet may be a retaining type, a hooking type, an exposed type, or an embedded type, or may be a type having a shielding door at the power plug insertion port.

  Further, the above-described outlet may be provided with a cover for the purpose of preventing rain, drip-proof, electric shock, and the like.

  Each embodiment described in this specification is one embodiment of the present invention, and is not limited to this as long as the claims are satisfied.

DESCRIPTION OF SYMBOLS 11 ... Power feeding system 13 with an anti-theft function 13 ... Outlet 15 ... Anti-theft device 17 ... Input device 19 ... Power cable 23 ... Plug receptacle 25 ... Electric power supply path 27 ...・ Electromagnetic relay (electric circuit switch)
27a ... Coil 27b ... Mechanical contact 29 ... Electric circuit switch control means 31 ... DC power supply 35 ... Microcomputer 43 ... Memory 47 ... Power line (power carrying means)
49 ... Signal line (control signal line)
51 ... Connector 53 ... Power plug 55 ... ECU for charging
59 ... Memory 61 ... Communication circuit EV ... Electric vehicle EV1 ... Connector for charging

Claims (9)

In a power supply system with an anti-theft function that prevents unauthorized power supply to an unlicensed power consumer instead of a power consumer that has the title;
An electric circuit switch provided in the middle of the power supply circuit for opening and closing the power supply circuit;
An electric circuit switch control means for controlling the electric circuit switch;
There are provided both a transmission line for transmitting the power supplied from the power supply circuit to the authoritative power consumer, and a signal line for transmitting a continuous signal output from the authoritative power consumer to a predetermined signal input unit. Wired equipment,
The predetermined signal input unit for inputting a continuous signal transmitted from the authoritative power consumer via the wiring device;
With
When the connection of the plug provided in the connecting device is interrupted and a continuous signal to be input during connection is not input to the signal input unit, the electric circuit switch control means controls the electric circuit switch to control the electric circuit switch. A power feeding system with an anti-theft function, which is configured to prevent unauthorized power feeding due to replacement of the plug by interrupting a power feeding circuit.   After the continuous signal is not input to the signal input unit and the circuit switch control means shuts off the power feeding circuit, the power feeding circuit is shut off until the next power consumer is connected. The power feeding system with an anti-theft function according to claim 1. A plug connected to the authoritative power consumer has a power supply side coil that transmits power transmitted by the power transmission line, and a receiving unit that is connected to the signal line and receives a predetermined optical signal. And
The authoritative power consumer includes a power receiving coil that is magnetically connected to the power supply coil, and a transmission unit that converts the continuous signal into the predetermined optical signal and transmits it.
The power supply side coil and the power receiving side coil are configured to perform non-contact power transmission, and further, the continuous signal transmission is configured to partially use the transmission unit and the reception unit as a signal transmission path. The power feeding system with an anti-theft function according to claim 1 or 2 . The power transmission includes a power supply side coil provided in a plug connected to the authoritative power consumer, and a power receiver coil provided in the authoritative power consumer and magnetically connected to the power supply coil. It is configured to be performed by contactless power transmission means for performing contactless power transmission,
3. The power feeding system with an anti-theft function according to claim 1, wherein the continuous signal transmission uses the power supply side coil and the power receiving side coil as a partial signal transmission path . 4. The continuous signal is a control signal for power supply that controls the disconnection and connection of the electric circuit switch in a state where the power transmission line is connected,
The anti-theft function according to any one of claims 1 to 4 , wherein the electric circuit switch control means controls the disconnection and connection of the electric circuit switch based on the control signal for power supply. Power supply system. The power supply system with an anti-theft function according to any one of claims 1 to 5 , wherein the power supply system with an anti-theft function is a predetermined intermittent signal instead of the continuous signal. The power supply system with an anti-theft function according to any one of claims 1 to 6 is any one of a charging stand that supplies power to an electric vehicle and charges the electric vehicle and a power supply system that supplies power to the electric vehicle. A power supply system with an anti-theft function characterized by that.   When the power supply is performed, the encryption key stored in the authoritative power consumer is collated, and if the encryption key matches, the power consumer is authenticated as the authoritative power consumer. The power supply system with an anti-theft function according to any one of claims 1 to 7.   The power supply is verified that the power consumer is the authoritative power consumer if the encryption key of the predetermined RFID tag is matched at the time of the power supply and the encryption keys match. The power feeding system with an anti-theft function according to claim 7.

Images