JP2020010468A - Power source cable and charging control method - Google Patents

Abstract

To provide a power cable and a charging control method capable of improving reliability of control for supplying power to a moving body driven using the power and reducing a limit of an amount of use of electricity at a use point.SOLUTION: A power cable includes a plug connected to a power supply side and a connector connectable to a mobile body, and supplies power to the mobile body via the plug and the connector. The power cable includes: a communication unit that receives a signal transmitted by a communication device for monitoring a current flowing in a main body and performs communication with a mobile body electrically connected to a self-power supply cable via a connector by utilizing a communication path; and a control unit that notifies the mobile body of information indicating a charging current value by utilizing the communication path when charging power to the mobile body is suppressed based on a signal received by the communication unit.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a power cable and a charging control method.

In recent years, electric vehicles (EV) and plug-in hybrid vehicles (PHEV) have been increasingly introduced. In order to charge the EV / PHEV, it is necessary to provide equipment such as a charging station, but the number of such equipment has not reached a sufficient level. As an alternative to such equipment, a power cable for charging an EV / PHEV with AC power or the like supplied from an outlet or the like is known (for example, see Patent Document 1). In order to ensure the safety and quality of such a power cable, a standard (such as IEC61851-1) is specified. By identifying and using a power cable that conforms to the standard, the user can safely perform charging for each unit.
Patent Literature 1 describes a charging cable that enables charging of one or a plurality of cascaded EVs / PHEVs from one outlet.

JP 2014140289 A

However, according to Patent Literature 1, although the charging cable communicates using a single communication path such as a power line, communication cannot be performed if the communication path is interrupted. When such an event occurs, it becomes impossible to detect that there is a charging cable that requires charging, and the reliability of control for transmitting and receiving power may be reduced.
In addition, when a charging facility is installed in each home and the EV / PHEV is charged by the charging facility, if the received power increases, the main breaker may trip. For this reason, in a home where the electric water heater is used to heat the battery at midnight, problems such as the inability to charge the EV / PHEV at midnight occur, and this has caused EV / PHEV not to spread.
The present invention has been made in view of the above points, and its object is to improve reliability of control for supplying power to a moving object driven by using power, It is an object of the present invention to provide a power cable and a charging control method that can reduce the amount of electricity used at a use location.

One embodiment of the present invention is a power cable including a plug connected to a power supply side and a connector connectable to a moving body, and supplying power to the moving body via the plug and the connector. Receiving a signal transmitted by a communication device that monitors a current flowing to a main trunk, and performing communication using a communication path between the mobile unit and the mobile unit that is electrically connected to the power cable through the connector. A communication unit, based on the signal received by the communication unit, when suppressing charging power to the mobile unit, information indicating a charging current value is notified to the mobile unit using the communication path. And a control unit that performs the control.
In the power cable according to one embodiment of the present invention, the control unit may reduce the charging power value at a predetermined rate when suppressing the charging power to the moving body.
In the power cable according to one aspect of the present invention, the control unit reduces the charging power value to a predetermined value when suppressing the charging power of the moving object.
In the power cable according to one aspect of the present invention, the control unit determines whether to suppress charging power of the moving body based on a power receiving current value included in the signal and supplied by the master. A management unit, wherein the control unit notifies the mobile unit of information indicating the charging current value by using the communication path when the management unit determines to suppress the charging power of the mobile unit. I do.
In the power cable according to one aspect of the present invention, the communication device is a smart meter, the management unit creates a reception current request that is a signal requesting the reception current value, and the communication unit includes the management unit. Transmits the received current request created by the smart meter to the smart meter, and receives the signal transmitted by the smart meter in response to the received current request.
In the power cable according to one aspect of the present invention, the control unit determines the charging current value based on a statistical value derived based on the charging power value when suppressing the charging power of the moving object.
One embodiment of the present invention includes a plug connected to a power supply side and a connector connectable to a moving body, and a power cable that supplies power to the moving body through the plug and the connector is executed. A charging control method, comprising: a step of receiving a signal transmitted by a communication device that monitors a current flowing to a main trunk; and suppressing charging power to the mobile object based on the signal received in the step of receiving the signal. In the case of, the information indicating the charging current value, via the connector, using a communication path between the mobile unit and the mobile unit that is electrically connected to the own power cable, the step of notifying the mobile unit And a charge control method.

  ADVANTAGE OF THE INVENTION According to embodiment of this invention, the reliability of the control for supplying the electric power with respect to the mobile body driven using electric power can be improved, A power cable and a charge control method that can be reduced can be provided.

It is a figure showing the outline of the charging system of a 1st embodiment. FIG. 2 is a block diagram illustrating an example of a power cable and a communication device included in the charging system according to the first embodiment. 5 is a sequence chart illustrating an example of an operation of the charging system according to the first embodiment. FIG. 3 is a diagram illustrating an example of a charging power suppression process of the charging system according to the first embodiment. FIG. 3 is a diagram illustrating an example of a charging power suppression process of the charging system according to the first embodiment. It is a block diagram showing an example of a power cable and a communication device included in the charging system of the second embodiment. It is a sequence chart which shows an example of operation of the charging system of a 2nd embodiment. It is a figure showing an example of the charge power control processing of the charging system of a 2nd embodiment. It is a figure showing an example of the charge power control processing of the charging system of a 2nd embodiment. FIG. 13 is a block diagram illustrating an example of a power cable included in a charging system according to a third embodiment. 13 is a sequence chart illustrating an example of an operation of the charging system according to the third embodiment. FIG. 13 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment. FIG. 13 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment. FIG. 13 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment. It is a figure showing an example of the breaking characteristic of a breaker.

Next, a power cable and a charging control method according to the present embodiment will be described with reference to the drawings. The embodiment described below is merely an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.
In all the drawings for describing the embodiments, components having the same function are denoted by the same reference numerals, and repeated description is omitted.
Further, “based on XX” in the present application means “based on at least XX”, and includes a case based on another element in addition to XX. Further, “based on XX” is not limited to the case where XX is used directly, but also includes the case where XX is calculated or processed. “XX” is an arbitrary element (for example, arbitrary information).

(1st Embodiment)
(Charging system)
FIG. 1 is a diagram illustrating an outline of the charging system according to the first embodiment.
The charging system according to the first embodiment is installed in a general house H. In the house H, electric power is supplied to appliances such as the dryer D, the eco-cute EC, and the electromagnetic cooker IH via the power pole PP, the distribution line DL, the smart meter SM, and the distribution board PB. In the house H, electric power is supplied to a mobile object such as an electric vehicle EV via the power pole PP, the distribution line DL, the smart meter SM, the distribution board PB, the charging outlet CE, and the power cable 1. Is supplied. The distribution board PB includes a charging facility PS and a communication device 5. Hereinafter, the case where electric power is supplied to the electric vehicle EV will be described as an example.
The electric vehicle EV is, for example, a storage battery type EV (Battery Electric Vehicle: BEV) or a plug-in hybrid vehicle (PHEV). The electric vehicle EV includes a storage battery BT (not shown), and uses the power of the storage battery BT for traveling of the own vehicle. The storage battery BT stores power by charging power from a charging facility PS or the like connected to the electric vehicle EV.

Charging facility PS includes a main breaker. As for the charging equipment PS, forms such as normal charging and quick charging are determined according to its specifications, and classification based on current capacity at the time of charging is defined. The normal charging is, for example, a mode of charging with electric power from an AC outlet C. The quick charging is, for example, a form of charging using a dedicated charging stand or the like. In the case of normal charging, one electric vehicle EV is charged with electric power from one outlet C (power supply system), or the electric power is distributed to a plurality of electric vehicles EV and the electric vehicle EV is charged. It is possible to charge the car EV.
The charging device PS is provided with a communication device 5 that detects a receiving current, which is a current flowing to the main breaker, and generates a radio wave (signal) when the detected receiving current is equal to or greater than a threshold.

  The method of charging the electric vehicle EV includes a case where AC is used and a case where DC is used, and there are standards that specify the method. The interface specifications when using the AC are specified in IEC (International Electrotechnical Commission) 61851-1 and the like. The interface specifications when using DC are specified in IEC61851-23 and the like. The power cable 1 shown in the present embodiment conforms to, for example, the above standard. According to IEC61851-1, the minimum current value of the current flowing during the charging operation is specified for each electric vehicle EV. When charging the electric vehicle EV with electric power from an outlet according to IEC61851-1, it is specified that a current flowing through the electric vehicle EV is equal to or more than the minimum current value. In the present embodiment, a case will be described in which the electric vehicle EV is charged using alternating current.

For example, the following are connected as loads to the charging outlet CE of the charging system shown in FIG. The power supply cable 1 is connected to the charging outlet CE. The power cable 1 controls the supply of power supplied from the charging outlet CE, and supplies the power to the electric vehicle EV. The power cable 1 notifies the corresponding electric vehicle EV of the amount of power that can be supplied.
As described above, if the charging outlet CE and the power cable 1 are used, the electric vehicle EV can be charged by the normal charging method described above.

Hereinafter, details of an example of charging using the charging outlet CE and the power cable 1 will be described.
FIG. 2 is a block diagram illustrating an example of a power cable and a communication device included in the charging system according to the first embodiment. In the example shown in FIG. 2, a charging outlet CE is provided from a main breaker included in the charging system PS via a branch breaker BB.
The charging outlet CE on the power supply side is provided with a plurality of terminals to which low-voltage alternating current is applied and a grounded ground terminal. The effective value of the low voltage nominal voltage is, for example, 100V (volt) or 200V. The ground terminal of the power cable 1 may be grounded with this ground terminal.
The power cable 1 includes a plug (first terminal) 11, a mobile object connector (second terminal) 12, and a control box 14 (hereinafter, referred to as "CBOX 14").

The plug 11 is formed, for example, in a shape that can be attached to and detached from the charging outlet CE on the power supply side.
The moving body connection connector 12 is formed in a shape detachable from the electric vehicle EV, and is connected to the electric vehicle EV. For example, the mobile unit connector 12 may be formed in a shape having a grip (not shown) so that it can be easily gripped.
A cable LN1 is connected to the plug 11, and a cable LN2 is connected to the mobile unit connector 12. The plug 11 and the mobile unit connector 12 are connected via the cable LN1, the cable LN2, and the cable LN3. Cable LN1 includes a ground line connected to the ground terminal of each plug 11. The cable LN2 includes a ground line connected to the ground terminal of each mobile unit connector 12.

A CBOX 14 is provided between the plug 11 connected to the cable LN1 and the mobile connector 12 connected to the cable LN2. As shown in FIG. 2, the CBOX 14 is electrically connected to the plug 11 via the cable LN1 and is electrically connected to the mobile connector 12 via the cable LN2. The CBOX 14 is provided with a ground terminal, and the power cable 1 is used with the ground terminal grounded. The ground terminal of the CBOX 14 may be provided independently of the terminals of the plug 11, the mobile unit connector 12, and the like, and may also serve as the ground terminal in the plug 11.
The cable LN1 can be omitted by integrating the plug 11 and the CBOX 14, and the cable LN2 can be omitted by integrating the CBOX 14 and the mobile connector 12.
The plug 11 includes a pair of terminals (first terminals) for electrically connecting the power cable 1 to an AC supply source, and a ground terminal.

The mobile connector 12 includes a pair of terminals (second terminals) for electrically connecting the power cable 1 to the electric vehicle EV, and a ground terminal. The set of terminals may include a terminal for communicating with the electric vehicle EV.
Between the plug 11 (first terminal) and the mobile unit connector 12 (second terminal), a measuring unit 141, a ground fault circuit breaker (RCD (Residual Current Device)) 142, and a switch 143 are provided. ing.
The measuring unit 141 is a measuring device that measures the amount of power, the number of times of charging, and the charging time. In the following description, the case where the measuring unit 141 measures the electric energy will be described, but the present invention is not limited to this. For example, the measuring unit 141 may be a so-called smart meter. The measuring unit 141 according to the embodiment includes a detecting unit that detects the amount of power, a communication control unit that notifies the detected amount of power, and a communication unit that communicates under the control of the communication control unit. For example, the weighing unit 141 communicates with the PLC modulation unit 1441 of the CBOX 14 through the communication unit.

The earth leakage breaker 142 detects an earth leakage occurring on the electric vehicle EV side from the earth leakage breaker 142, and cuts off the circuit when a leakage current equal to or more than a predetermined value is detected. For example, the earth leakage breaker 142 detects a range from the earth leakage breaker 142 in the CBOX 14 to the connection to the electric vehicle EV, for example, an earth leakage generated in the cable LN2 or the mobile unit connector 12, and the user detects the cable LN2 and Electric shock is prevented when the mobile object connector 12 is touched.
The conduction state of the switch 143 is set by the control of the control unit 147. For example, the switch 143 enables the supply of electric power to the electric vehicle EV connected to the mobile unit connector 12 when in the conductive state, and limits the supply of electric power when in the cut-off state. .

[Detailed configuration of power supply system in CBOX 14]
An example of a more specific configuration in the CBOX 14 in the embodiment will be described.
For example, as shown in FIG. 2, the measuring unit 141, the earth leakage breaker 142, and the switch 143 are serially arranged in order from the plug 11 side along the direction from the plug 11 to the mobile unit connector 12. It is connected to the. That is, the measuring unit 141 is provided on the plug 11 side of the earth leakage breaker 142, and measures the power supplied from the power cable 1 to the electric vehicle EV and the power consumed by the power cable 1 for supplying the power. I do.
The cable LN1 drawn into the CBOX 14 is connected to one end of the earth leakage breaker 142, and the other end of the earth leakage breaker 142 is connected to one end of a cable LN3. The other end of the cable LN3 is connected to one end of the switch 143, and the other end of the switch 143 is connected to the cable LN2.
The measuring unit 141 measures the power supplied from the power cable 1 to the electric vehicle EV.
Such a power cable 1 supplies electric power to the electric vehicle EV via the plug 11 and the mobile object connector 12. Electric power supplied to the electric vehicle EV is charged in the electric vehicle EV as power for driving the power storage unit BT of the electric vehicle EV.

[Detailed Configuration of Control System in CBOX 14]
The CBOX 14 includes a communication unit 144, a setting unit 145, an input unit 146, a control unit 147, and a power supply unit 148.
The communication unit 144 includes a PLC modulation unit 1441 and a communication IF unit 1444.
Under the control of the control unit 147, the PLC modulation unit 1441 uses the cable LN1 or the like as a medium, and communicates with a device such as the measuring unit 141 connected to the cable LN1 or the like via a power line carrier communication (PLC communication) system. Communicate by As the PLC communication method, a known general method may be selected.
The PLC modulator 1441 communicates with the electric vehicle EV that is electrically connected to the power cable 1 via the mobile connector 12 using PLC communication.
The communication IF unit 1444 performs communication using wireless communication. The communication IF unit 1444 is connected to an external device of the power cable 1 such as the communication device 5 and communicates with the external device. The connection between the communication IF unit 1444 and the external device may use wireless communication such as a wireless LAN, close proximity wireless communication, or a mobile communication network, or may use wired communication. In the present embodiment, the case where the communication IF unit 1444 and the communication device 5 perform wireless communication will be continued. Communication IF 1444 receives the signal transmitted by communication device 5 and outputs the received signal to management unit 1475.
In the following description, a communication path based on PLC communication may be referred to as a first communication path, and a communication path based on wireless communication may be referred to as a second communication path.

The setting unit 145 includes an LCD (liquid crystal display) or the like, displays information to be set on the control unit 147, and sets according to an operation performed on the displayed information. For example, the information displayed on the setting unit 145 includes a status display indicating the control status of the power cable 1 and the like.
The input unit 146 detects a user operation on the setting unit 145 and provides information on the detected operation to the control unit 147. The input unit 146 may be configured as, for example, a touch panel provided on the display surface of the setting unit 145. The information acquired by the input unit 146 from the user's operation includes information on the amount of charging power to be suppressed when the charging power to the electric vehicle EV is suppressed.

The control unit 147 includes, for example, a computer including a CPU (not shown), a storage unit, and the like, and performs various processes by the CPU executing a program.
The control unit 147 includes a SW control unit 1471, a CPLT (Control Pilot) unit 1472, a power amount control unit 1474, and a management unit 1475.
The SW control unit 1471 controls the conduction state of the switch 143. For example, the SW control unit 1471 enables supply of electric power to the electric vehicle EV by turning on the switch 143.
CPLT section 1472 communicates with electric vehicle EV. The communication interface specification by the CPLT unit 1472 may be based on, for example, IEC61851-24. In this case, communication between the CPLT unit 1472 and the electric vehicle EV is performed via terminals provided on the mobile unit connector 12. For example, the CPLT unit 1472 transmits information for controlling the state of the electric vehicle EV, which is the communication partner of the CPLT unit 1472, to the electric vehicle EV by communication using the CPLT signal. Specifically, CPLT section 1472 transmits information indicating the charging current value to electric vehicle EV.

  The power control unit 1474 controls the storage battery BT of the electric vehicle EV based on a command from the management unit 1475 so that the storage battery BT can be charged with a desired power. The electric energy control unit 1474 performs main control for charging the storage battery BT of the electric vehicle EV. The electric energy control unit 1474 acquires information (hereinafter referred to as “charging power suppression information”) indicating that charging power output by the management unit 1475 to be described later is suppressed, and based on the acquired charging power suppression information, the electric vehicle The EV charging power is suppressed. When suppressing the charging power of the electric vehicle EV, the power control unit 1474 may control the charging power based on a predetermined ratio, such as 、 or の of the current charging power, or 6A. , 0A, etc., the charging power may be suppressed to a predetermined value. The setting regarding the charging power such as the charging power value may be performed by the user operating the input unit 146. Power amount control section 1474 derives a charging current value based on the charging power value, and outputs information indicating the derived charging current value to CPLT section 1472. In the following description, the processing performed by the power control unit 1474 may be described as the processing of the control unit 147.

The management unit 1475 receives a notification that power is supplied to the power supply unit 148 and the power supply unit 148 has detected the power supply, and detects a state in which power is supplied to the power cable 1. The management unit 1475 collects the result measured by the measuring unit 141. The management unit 1475 detects whether or not the electric vehicle EV is being charged from the result of measurement by the measurement unit 141. For example, when the weighing result (power or current) is equal to or less than a predetermined value, it is determined that the battery is not in a charged state.
Management unit 1475 includes a storage area for storing information on the control state of power cable 1. For example, the information on the control state of the power cable 1 includes the identification number of the power cable itself, the identification number of the power cable obtained by communication (for example, the identification number of the CBOX 14), the information specifying the power cable to be allowed to charge, and the charging. Includes the number of power cables used. The management unit 1475 causes the setting unit 145 to display the collected various information. The management unit 1475 obtains a signal transmitted by the communication device 5 by communicating with the communication device 5. Specifically, the management unit 1475 obtains the signal output by the communication IF unit 1444, creates charging power suppression information based on the acquired signal, and transmits the created charging power suppression information to the power control unit 1474. Output to

[Communication device 5]
The communication device 5 will be described.
The communication device 5 includes a resistor 6, a regulator 7, a transmission circuit 8, and a current detector 9. The current detector 9 detects a current flowing through the main breaker PS. When the current detector 9 detects a current equal to or more than a specific current value, the regulator 7 converts a voltage generated by the current flowing through the resistor 6 into a constant voltage, and supplies the constant voltage to the transmission circuit 8. The transmission circuit 8 generates a radio wave (signal) by the voltage supplied by the regulator 7 and transmits the generated signal.

Here, a specific example of the process of the control unit 147 will be described.
[Determination of Electric Vehicle EV to be Charged]
The control unit 147 is, for example, electrically connected to the electric vehicle EV via the mobile unit connector 12 of the power cable 1 and uses a first communication path using wired communication with the electric vehicle EV. When the communication is established and the communication via the second communication path is established, an electric vehicle EV that is allowed to exchange power with the electric vehicle EV may be determined. For example, the above-described wired communication is a PLC communication using the cable LN1 or the like. As described above, the charging system has a plurality of communication paths with the communication partner, so that each communication path can be used according to the purpose.

Note that the control unit 147 is connected to the own power cable 1 even when there is an electric vehicle EV that is electrically connected via the mobile unit connector 12 of another power cable different from the own power cable 1. The same processing as in the case of the electric vehicle EV may be performed. That is, the control unit 147 includes the electric vehicle EV that is electrically connected via the mobile unit connector 12 of another power cable, communication by the first communication path using wired communication is established, and the second communication When communication by the path is established, transmission and reception of electric power to and from the electric vehicle EV may be permitted. As described above, whether or not electric power is transmitted / received to / from the electric vehicle EV in the charging system is determined based on the information collected using the communication via the plurality of communication paths between the plurality of power cables 1 based on the control unit 147. Is determined.
In the above case, the control unit 147 collects identification information of another power cable using the first communication path, and can exchange power with another power cable based on the collected identification information. May be detected using the second communication path.

  The control unit 147 causes the communication unit 144 to establish a second communication path using a wireless communication line and establish a first communication path using a wired communication line. For example, the control unit 147 may cause the communication unit 144 to establish a first communication path using power line carrier in a wired communication line. For example, in the process of establishing the communication path, predetermined information (message) is obtained from a communication partner, and the information includes identification information for specifying the communication partner. And processing until the acquisition of information based on the identification information is continued.

[Determination of electric energy exchanged with electric vehicle EV]
The control unit 147 controls the number of power cables 1 that permit transmission and reception of electric power to and from the electric vehicle EV, including the number of other power cables that can transmit and receive power to and from the own power cable 1. To determine. The control unit 147 may determine a specified value of the amount of power that can be supplied from another power cable to the electric vehicle EV corresponding to the power cable based on the determined number. For example, if the number of other power cables that are in a state where power can be transmitted and received is one and the power supply cable 1 is not in a state where power can be transmitted and received, the control unit 147 determines the power supply target. Assume that the total number of power cables 1 is one. Instead, when the own power cable 1 is in a state capable of transmitting and receiving power, the total number of power cables 1 to be supplied with power is two.

When the determined number is plural based on the current value at that time, the control unit 147 reduces the current supplied by each power cable 1 using the coefficient. For example, when the determined number is two, the control unit 147 allocates power to the two power cables 1.
In this case, the coefficient is set to 0.5, which is a half of the case of one. When the number determined by the control unit 147 is N, the power is distributed to the N power cables 1 so that the value is 1 / N of the case of one (1). / N).
The control unit 147 determines a specified value of the amount of power that can be supplied to the electric vehicle EV electrically connected to the power cable 1 based on the determined number. By determining the coefficient in this manner, the control unit 147 determines, based on the coefficient corresponding to the determined number, the specified value of the amount of power that can be supplied to the electric vehicle EV electrically connected to the own power cable 1. Can be evenly distributed.
Note that the control unit 147 may adjust the current value supplied to the electric vehicle EV so as not to fall below the lower limit value of the current set for the electric vehicle EV.

[Procedure for ending charging of electric vehicle EV]
In the charging system of the embodiment, the value of the current for charging the electric vehicle EV from each power cable 1 is determined based on the number of power cables 1 to be charged as described above. The electric vehicles EV that have been able to accumulate a predetermined charge amount are charged one by one and disconnected from the corresponding power cable 1.
For example, when the number of electric vehicles EV to be charged using the power cable 1 changes, the charging system temporarily stops the charging by the control unit 147 and resets the current value to be distributed. The procedure for resetting the current value may follow the same procedure as the procedure for setting the current value described above. Thus, even if the number of electric vehicles EV connected to the system of the power cable 1, that is, the number of power cables to be charged increases or decreases, the target electric vehicle EV is reviewed, , The electric vehicle EV can be charged with appropriate power.

[Operation of charging system]
FIG. 3 is a sequence chart showing an example of the operation of the charging system according to the first embodiment. In the example illustrated in FIG. 3, an operation after the electric vehicle EV is connected to the charging outlet CE and charging is started will be described.
(Step S1)
The current detector 9 of the communication device 5 detects a current equal to or more than a specific current value. When the current detector 9 detects a current equal to or more than a specific current value, the regulator 7 converts a voltage generated by the current flowing through the resistor 6 into a constant voltage, and supplies the constant voltage to the transmission circuit 8.
(Step S2)
The transmission circuit 8 of the communication device 5 generates a signal based on the voltage supplied by the regulator 7 and transmits the generated radio wave.
(Step S3)
The communication IF unit 1444 of the power cable 1 receives the signal transmitted by the communication device 5 and outputs the received signal to the management unit 1475. The management unit 1475 acquires the signal output by the communication IF unit 1444, creates charging power suppression information based on the acquired signal, and outputs the created charging power suppression information to the power control unit 1474.
(Step S4)
The power control unit 1474 of the power cable 1 acquires the charging power suppression information output by the management unit 1475, and starts suppressing the charging power based on the acquired charging power suppression information.
(Step S5)
The power control unit 1474 of the power cable 1 creates information indicating the charging current value based on the charging power suppression information, and outputs the information indicating the created charging current value to the CPLT unit 1472. CPLT unit 1472 acquires information indicating the charging current value output from power amount control unit 1474, and transmits the information indicating the acquired charging current value to electric vehicle EV.

[Charging power suppression processing in charging system]
FIG. 4 is a diagram illustrating an example of a charging power suppression process of the charging system according to the first embodiment.
(1) of FIG. 4 shows a state where the EC, IH, and dryer are not used in the house H and the electric vehicle EV is being charged.
FIG. 4B illustrates a state in which the received power, which is the power used in the house H, has increased due to the use of the EC in the house H in the state of FIG. 4A. Due to the charging of the electric vehicle EV and the use of the EC, the received power exceeds the starting power of the communication device 5. The communication device 5 transmits a signal when the received power exceeds the activation power of the communication device 5.
FIG. 4C illustrates a state in which the received power is further increased due to the use of the IH in the house H in the state of FIG. 4B. Due to the charging of the electric vehicle EV, and the use of the EC and the IH, the state where the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.
FIG. 4 (4) shows the state of FIG. 4 (3) in which the power cable 1 reduces the charging power of the electric vehicle EV to １ ／. Even if the charging power of the electric vehicle EV is suppressed to １ ／, the state where the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.
FIG. 4 (5) shows a state in which the received power has increased due to the use of the dryer in the house H in the state of FIG. 4 (4). Due to the charging of the electric vehicle EV, the use of the EC, the IH, and the dryer, the state in which the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.
(6) of FIG. 4 illustrates a state in which the charging power of the electric vehicle EV is further reduced by half to zero in the state of (5) of FIG. Even if the charging power of the electric vehicle EV is further reduced to 1/2 and set to zero, the state where the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.

FIG. 5 is a diagram illustrating an example of a charging power suppression process of the charging system according to the first embodiment.
5 (1) to FIG. 5 (5) can be applied from FIG. 4 (1) to FIG. 4 (5).
(6) of FIG. 5 illustrates a state in which the charging power of the electric vehicle EV is suppressed by suppressing the current to the lower limit value of the electric vehicle EV in the state of (5) of FIG. ing. An example of the lower limit of the current is 6A. Even if the charging power of the electric vehicle EV is suppressed, the state where the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.
(7) of FIG. 5 illustrates a state in which the charging power of the electric vehicle EV is further reduced to zero in the state of (6) of FIG. Even if the charging power of the electric vehicle EV is further suppressed, the state where the received power exceeds the starting power of the communication device 5 continues. The communication device 5 continues to transmit a signal because the received power has continued to exceed the activation power of the communication device 5.

In the above-described embodiment, a case has been described where the communication device 5 and the CBOX 14 are wirelessly connected. However, the present invention is not limited to this example. For example, the communication device 5 and the CBOX 14 may be connected by wire. Specifically, the communication device 5 and the PLC modulator 1441 may be connected via the cable LN1. In this case, the transmission circuit 8 of the communication device 5 and the PLC modulation section 1441 communicate with each other by the PLC communication method. The PLC modulation section 1441 acquires the signal output by the transmission circuit 8 and outputs the acquired signal to the management section 1475.
According to the charging system of the first embodiment, the power cable 1 includes the plug 11 connected to the power supply side, and the moving object connector 12 capable of connecting the moving object. The power cable 1 supplies power to the moving object via the plug 11 and the moving object connector 12. The power supply cable 1 is connected to the communication IF unit 1444 or the PLC modulation unit 1441 that receives a signal transmitted by the communication device 5 that monitors the current flowing through the main trunk, and is electrically connected to the power supply cable 1 via the connector 12. When the charge current of the mobile object is suppressed based on the signals received by the CPLT unit 1472 that communicates with the body using the communication path and the communication IF unit 1444 or the PLC modulation unit 1441, the charge current value And a power control unit 1474 for notifying the mobile body of information indicating the above by using a communication path. With this configuration, when the charging power of the mobile unit is suppressed based on the signal transmitted by the communication device 5, information indicating the charging current value can be notified to the mobile unit. The reliability of control for supplying power to the driven moving body can be improved.

(Second embodiment)
(Charging system)
FIG. 1 can be applied to the outline of the charging system of the second embodiment. However, a communication device 5a is provided instead of the communication device 5, and a power cable 1a is provided instead of the power cable 1.
FIG. 6 is a block diagram illustrating an example of a power cable and a communication device included in the charging system according to the second embodiment.
It differs from the power cable 1 of the first embodiment in that a management unit 1475a is provided instead of the management unit 1475.
The management unit 1475a receives a notification that power is supplied to the power supply unit 148 and the power supply unit 148 has detected the power supply, and detects a state in which power is supplied to the power cable 1a. The management unit 1475a collects the results measured by the measurement unit 141. The management unit 1475a detects whether or not the electric vehicle EV is being charged from the result measured by the measurement unit 141. For example, when the weighing result (power or current) is equal to or less than a predetermined value, it is determined that the battery is not in a charged state. The management unit 1475a includes a storage area for storing information on the control state of the power cable 1a. For example, the information on the control state of the power cable 1a includes the identification number of the own power cable, the identification number of the power cable obtained by communication, the information specifying the power cable to be allowed to charge, the number of power cables to be charged, and the like. .

  The management unit 1475a causes the setting unit 145 to display the collected various information. The management unit 1475a acquires a signal transmitted by the communication device 5a by communicating with the communication device 5a. Specifically, the management unit 1475a acquires the signal output by the communication IF unit 1444, and based on the information indicating the received current that is included in the acquired signal and flows through the trunk, the received current value is set to the received current value. It is determined whether the value is equal to or larger than the threshold. When the management unit 1475a determines that the received current value is equal to or greater than the received current threshold value, the management unit 1475a creates charging power suppression information and outputs the created charging power suppression information to the power control unit 1474. When the management unit 1475a determines that the received current value is smaller than the received current threshold value, the management unit 1475a ends the process of suppressing the charging power.

[Communication device 5a]
The communication device 5a will be described.
The communication device 5a according to the second embodiment is different from the communication device 5 according to the first embodiment in that a current value detection unit 4 is provided. The current value detection unit 4 detects the power reception current, and outputs information indicating the detected power reception current to the transmission circuit 8. The transmission circuit 8 generates a radio wave (signal) based on the voltage supplied by the regulator 7, and transmits the generated signal including information indicating the received current output by the current value detection unit 4.

[Operation of charging system]
FIG. 7 is a sequence chart illustrating an example of the operation of the charging system according to the second embodiment. In the example illustrated in FIG. 7, an operation after the electric vehicle EV is connected to the charging outlet CE and charging is started will be described.
(Step S11)
The current detector 9 of the communication device 5a detects a current equal to or more than a specific current value. When the current detector 9 detects a current equal to or more than a specific current value, the regulator 7 converts a voltage generated by the current flowing through the resistor 6 into a constant voltage, and supplies the constant voltage to the transmission circuit 8.
(Step S12)
The transmission circuit 8 of the communication device 5a generates a signal based on the voltage supplied by the regulator 7, and transmits the generated signal including information indicating the received current output by the current value detection unit 4.
(Step S13)
The communication IF unit 1444 of the power cable 1a receives the signal transmitted by the communication device 5a, and outputs the received signal to the management unit 1475a.
(Step S14)
The management unit 1475a of the power cable 1a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on the information indicating the received current included in the acquired signal. Is determined. When the management unit 1475a determines that the received current value is smaller than the received current threshold value, the management unit 1475a ends the process of suppressing the charging power. In this case, the process proceeds to step S11.
(Step S15)
If the management unit 1475a of the power cable 1a determines that the received current value is equal to or greater than the received current threshold, the management unit 1475a creates charging power suppression information and outputs the created charging power suppression information to the power amount control unit 1474. I do.
(Step S16)
The power control unit 1474 of the power cable 1a creates information indicating the charging current value based on the charging power suppression information, and outputs the information indicating the created charging current value to the CPLT unit 1472. CPLT unit 1472 acquires information indicating the charging current value output from power amount control unit 1474, and transmits the information indicating the acquired charging current value to electric vehicle EV.

[Charging power suppression processing in charging system]
FIG. 8 is a diagram illustrating an example of a charging power suppression process of the charging system according to the second embodiment.
(1) of FIG. 8 illustrates a state in which the EC, IH, and dryer are not used in the house H and the electric vehicle EV is being charged.
FIG. 8B shows a state in which the received power has increased due to the use of the EC in the house H in the state of FIG. 8A. Due to the charging of the electric vehicle EV and the use of the EC, the received power exceeds the starting power of the communication device 5a. When the received power exceeds the activation power of the communication device 5a, the communication device 5a creates a signal including information indicating the received current, and transmits the created signal. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or less than the suppression threshold power, management unit 1475a determines that the received current value is less than the received current threshold. In this case, the power control unit 1474 does not suppress the charging power of the electric vehicle EV.
FIG. 8C shows a state in which the received power has increased due to the further use of the IH in the house H in the state of FIG. 8B. Due to the charging of the electric vehicle EV, and the use of the EC and the IH, the state where the received power exceeds the starting power of the communication device 5a continues. The communication device 5a creates a signal including information indicating the received current, and transmits the created signal, because the state in which the received power has exceeded the activation power of the communication device 5a continues. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475a determines that the received current value is equal to or greater than the received current threshold.

(4) of FIG. 8 illustrates a state in which the power control unit 1474 suppresses the charging power of the electric vehicle EV to １ ／ in the state of (3) of FIG. Even if the charging power of the electric vehicle EV is suppressed to ２, the state where the received power exceeds the starting power of the communication device 5a continues. The communication device 5a creates a signal including information indicating the received current, and transmits the created signal, because the state in which the received power has exceeded the activation power of the communication device 5a continues. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or less than the suppression threshold power, management unit 1475a determines that the received current value is less than the received current threshold. In this case, the power control unit 1474 does not suppress the charging power of the electric vehicle EV.
FIG. 8 (5) shows a state in which the received power has increased due to the use of the dryer in the house H in the state of FIG. 8 (4). Due to the charging of the electric vehicle EV, and the use of the EC, the IH, and the dryer, the state in which the received power exceeds the starting power of the communication device 5a continues. The communication device 5a creates a signal including information indicating the received current, and transmits the created signal, because the state in which the received power has exceeded the activation power of the communication device 5a continues. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475a determines that the received current value is equal to or greater than the received current threshold.
(6) of FIG. 8 illustrates a state in which the charging power of the electric vehicle EV is further reduced by half and set to zero in the state of (5) of FIG. Even if the charging power of the electric vehicle EV is further reduced to 1/2 and set to zero, the state where the received power exceeds the starting power of the communication device 5a continues. Since the received power continues to exceed the activation power of the communication device 5a, the communication device 5a creates a signal including information indicating the received current, and transmits the created signal. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or less than the suppression threshold power, management unit 1475a determines that the received current value is less than the received current threshold. In this case, the power control unit 1474 does not suppress the charging power of the electric vehicle EV.

FIG. 9 is a diagram illustrating an example of a charging power suppression process of the charging system according to the second embodiment.
9 (1) to FIG. 9 (5) can be applied from FIG. 8 (1) to FIG. 8 (5).
(6) of FIG. 9 illustrates a state in which the charging power of the electric vehicle EV is suppressed to the minimum current of the electric vehicle EV in the state of (5) of FIG. An example of the minimum current is 6A. Even if the charging power of the electric vehicle EV is suppressed until it reaches the minimum current of the electric vehicle EV, the state where the received power exceeds the starting power of the communication device 5a continues. Since the received power continues to exceed the activation power of the communication device 5a, the communication device 5a creates a signal including information indicating the received current, and transmits the created signal. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475a determines that the received current value is equal to or greater than the received current threshold.
(7) of FIG. 9 illustrates a state in which the charging power of the electric vehicle EV is further reduced to zero in the state of (6) of FIG. Even if the charging power of the electric vehicle EV is further suppressed, the state where the received power exceeds the starting power of the communication device 5a continues. Since the received power continues to exceed the activation power of the communication device 5a, the communication device 5a creates a signal including information indicating the received current, and transmits the created signal. Communication IF 1444 receives the signal transmitted by communication device 5a, and outputs the received signal to management unit 1475a. The management unit 1475a acquires the signal output by the communication IF unit 1444, and determines whether or not the received current value is equal to or greater than the received current threshold based on information indicating the received current included in the acquired signal. Here, since the received power is equal to or less than the suppression threshold power, management unit 1475a determines that the received current value is less than the received current threshold. In this case, the power control unit 1474 does not suppress the charging power of the electric vehicle EV.

In the above-described embodiment, the case where the communication device 5a and the CBOX 14 are wirelessly connected has been described. However, the present invention is not limited to this example. For example, the communication device 5a and the CBOX 14 may be connected by wire. Specifically, the communication device 5a and the PLC modulator 1441 may be connected via the cable LN1. In this case, the transmission circuit 8 of the communication device 5a communicates with the PLC modulation section 1441 using the PLC communication method. The PLC modulation section 1441 acquires the signal output by the transmission circuit 8, and outputs the acquired signal to the management section 1475a.
According to the charging system of the second embodiment, the power cable 1a includes the plug 11 connected to the power supply side, and the moving object connector 12 capable of connecting the moving object. The power cable 1a supplies power to the moving object via the plug 11 and the moving object connector 12. The power supply cable 1a is connected to a communication IF unit 1444 or a PLC modulation unit 1441 that receives a signal transmitted by the communication device 5a that monitors a current flowing through the main trunk, and a mobile unit that is electrically connected to the power supply cable 1a via the connector 12. When the power receiving current of the mobile object is suppressed based on the signals received by the CPLT unit 1472 that communicates with the body using the communication path and the communication IF unit 1444 or the PLC modulation unit 1441, the charging current value Using the communication path to notify the mobile unit of the information indicating the power consumption, and determining whether to suppress the power reception current of the mobile object based on the power reception current value included in the signal. A part 1475a. With this configuration, the power cable 1a can determine whether or not to suppress the charging power of the moving object based on the received current value included in the signal transmitted by the communication device 5a. Information indicating the charging current value can be notified to the moving object. For this reason, the reliability of the control for supplying the power to the moving object driven by using the power can be improved.

(Third embodiment)
(Charging system)
FIG. 1 can be applied to the outline of the charging system of the third embodiment. However, a smart meter SM is used instead of the communication device 5, an earth leakage breaker (ELB) is used instead of the main breaker, and a power cable 1b is provided instead of the power cable 1.
FIG. 10 is a block diagram illustrating an example of a power cable included in the charging system according to the third embodiment.
The difference from the power cable 1 of the first embodiment is that a management unit 1475b is provided instead of the management unit 1475.
The management unit 1475b receives a notification that power is supplied to the power supply unit 148 and the power supply unit 148 has detected the power supply, and detects a state in which power is supplied to the power cable 1b. The management unit 1475b collects the result measured by the measurement unit 141. The management unit 1475b detects whether or not the electric vehicle EV is being charged from the result measured by the measurement unit 141. For example, when the weighing result (power or current) is equal to or less than a predetermined value, it is determined that the battery is not in a charged state. The management unit 1475b includes a storage area for storing information on the control state of the power cable 1b. For example, the information on the control state of the power cable 1b includes the identification number of the own power cable, the identification number of the power cable obtained by communication, the information specifying the power cable to be allowed to charge, the number of power cables to be charged, and the like. . The management unit 1475b causes the setting unit 145 to display the collected various information.

The management unit 1475b acquires information from the smart meter SM by communicating with the smart meter SM. Specifically, management unit 1475b creates a receiving current request, which is a signal requesting a receiving current, and transmits the created receiving current request from communication IF unit 1444 to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received power response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b obtains the receiving current response output by the communication IF unit 1444, and determines whether or not the receiving current value is equal to or greater than the receiving current threshold based on the information indicating the receiving current included in the obtained receiving current response. Is determined. When determining that the received current value is equal to or greater than the received current threshold, the management unit 1475b creates charging power suppression information and outputs the created charging power suppression information to the power control unit 1474. When the management unit 1475b determines that the power reception current value is smaller than the power reception current threshold, the management unit 1475b ends the process of suppressing the charging power.

[Operation of charging system]
FIG. 11 is a sequence chart illustrating an example of the operation of the charging system according to the third embodiment.
(Step S21)
The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM. For example, the communication IF unit 1444 accesses the smart meter SM using an ID and a password according to a Wi-SUN (Wireless Smart Utility Network).
(Step S22)
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request.
(Step S23)
The smart meter SM transmits the generated received current response to the power cable 1b.
(Step S24)
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b.
(Step S25)
The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. When the management unit 1475b determines that the power reception current value is smaller than the power reception current threshold, the management unit 1475b ends the process of suppressing the charging power. In this case, the process proceeds to step S21.
(Step S26)
If the management unit 1475b of the power cable 1b determines that the received current value is equal to or larger than the received current threshold value, the management unit 1475b creates charging power suppression information and outputs the created charging power suppression information to the power control unit 1474. I do.
(Step S27)
The power control unit 1474 of the power cable 1b creates information indicating the charging current value based on the charging power suppression information, and outputs the information indicating the created charging current value to the CPLT unit 1472. CPLT unit 1472 acquires information indicating the charging current value output from power amount control unit 1474, and transmits the information indicating the acquired charging current value to electric vehicle EV.

[Charging power suppression processing in charging system]
FIG. 12 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment.
(1) of FIG. 12 illustrates a state in which the EC, IH, and dryer are not used in the house H and the electric vehicle EV is being charged.
(2) of FIG. 12 illustrates a state in which the received power has increased due to the use of the EC in the house H in the state of (1) of FIG. Due to the charging of the electric vehicle EV and the use of the EC, the received power has increased. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b obtains the receiving current response output by the communication IF unit 1444, and determines whether or not the receiving current value is equal to or greater than the receiving current threshold based on the information indicating the receiving current included in the obtained receiving current response. Is determined. Here, since the received power is less than the suppression threshold power, management unit 1475b determines that the received current value is less than the received current threshold, and ends the charging power suppression process.

(3) in FIG. 12 illustrates a state in which the received power has increased due to the further use of the IH in the house H in the state of (2) in FIG. Due to the charging of the electric vehicle EV and the use of the EC and the IH, the received power has increased. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b obtains the receiving current response output by the communication IF unit 1444, and determines whether or not the receiving current value is equal to or greater than the receiving current threshold based on the information indicating the receiving current included in the obtained receiving current response. Is determined. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.

(4) in FIG. 12 illustrates a state in which the power control unit 1474 suppresses the charging power of the electric vehicle EV to １ ／ in the state of (3) in FIG. Even if the charging power of the electric vehicle EV is suppressed to １ ／, the state where the received power exceeds the suppression threshold power continues. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.
In (5) of FIG. 12, in the state of (4) of FIG. 12, the charging power of the electric vehicle EV is further reduced to 1/2 and set to zero. This shows a state in which the power has increased. Even if the charging power of the electric vehicle EV is further reduced to 1/2 and set to zero, the received power has increased due to the use of the dryer, and the state in which the received power has exceeded the suppression threshold power continues. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b. Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.

FIG. 13 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment.
13 (1) to FIG. 13 (4) can be applied from FIG. 12 (1) to FIG. 12 (4).
(5) of FIG. 13 illustrates a state in which the charging power of the electric vehicle EV is suppressed to the minimum current of the electric vehicle EV in the state of (4) of FIG. An example of the minimum current is 6A. This shows a state in which the received power is equal to or less than the suppression threshold power by suppressing the charging power of the electric vehicle EV to the minimum current of the electric vehicle EV. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is less than the suppression threshold power, management unit 1475b determines that the received current value is less than the received current threshold, and ends the charging power suppression process.
(6) in FIG. 13 illustrates a state in which the received power has increased due to the use of the dryer in the house H in the state of (5) in FIG. 13. Since the received power has increased due to the use of the dryer, the state where the received power has exceeded the suppression threshold power continues. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output by the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, determines whether the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.
(7) of FIG. 13 illustrates a state in which the charging power of the electric vehicle EV is further reduced to zero in the state of (6) of FIG. Even if the charging power of the electric vehicle EV is further suppressed, the state where the received power exceeds the suppression threshold power continues.

FIG. 14 is a diagram illustrating an example of a charging power suppression process of the charging system according to the third embodiment.
14 (1) to FIG. 14 (3) can be applied from FIG. 12 (1) to FIG. 12 (3).
(4) of FIG. 14 illustrates a state in which the charging power of the electric vehicle EV is suppressed to zero in the state of (3) of FIG. This shows a state in which the received power is equal to or less than the suppression threshold power by suppressing the charging power of the electric vehicle EV to zero. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is less than the suppression threshold power, management unit 1475b determines that the received current value is less than the received current threshold, and ends the charging power suppression process.
FIG. 14 (5) shows a state in which the charging power of the electric vehicle EV is increased in the state of FIG. 14 (4). The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.

(6) of FIG. 14 illustrates a state in which the charging power of the electric vehicle EV is suppressed to zero in the state of (5) of FIG. Further, in (6) of FIG. 14, the received power of the IH is reduced. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is less than the suppression threshold power, management unit 1475b determines that the received current value is less than the received current threshold, and ends the charging power suppression process.

(7) of FIG. 14 shows a state in which the charging power of the electric vehicle EV is increased in the state of (6) of FIG. This shows a state where the received power is equal to or less than the suppression threshold power even when the charging power of the electric vehicle EV is increased. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is less than the suppression threshold power, management unit 1475b determines that the received current value is less than the received current threshold.
(8) of FIG. 14 illustrates a state in which the charging power of the electric vehicle EV is increased in the state of (7) of FIG. This shows a state in which the received power is equal to or higher than the suppression threshold power by increasing the charging power of the electric vehicle EV. The management unit 1475b of the power cable 1b creates a received current request, and outputs the created received current request to the communication IF 1444. Communication IF section 1444 acquires the received power request output from management section 1475b, and transmits the obtained received current request to smart meter SM.
The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b.
Communication IF section 1444 of power cable 1b receives the received current response transmitted by smart meter SM, and outputs the received received current response to management section 1475b. The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. Here, since the received power is equal to or greater than the suppression threshold power, management unit 1475b determines that the received current value is equal to or greater than the received current threshold.

In the charging system of the third embodiment described above, the power control unit 1474 may switch the charging current value to be notified to the electric vehicle EV according to the contract ampere set in the smart meter SM.
The charging current value to be notified to the electric vehicle EV may be switched depending on whether the charging outlet CE is connected to the earth leakage breaker or the branch breaker BB. Specifically, the value is set to a large value when the charging outlet CE is connected to the earth leakage breaker, and is set to a small value when the charging outlet CE is connected to the branch breaker BB.
In the embodiment described above, the case where the smart meter SM and the CBOX 14 are wirelessly connected has been described, but the present invention is not limited to this example. For example, the smart meter SM and the CBOX 14 may be connected by wire. Specifically, the smart meter SM and the PLC modulator 1441 may be connected via the cable LN1. In this case, the smart meter SM and the PLC modulator 1441 communicate using the PLC communication method. The management unit 1475b of the power cable 1b creates a receiving current request, and outputs the created receiving current request to the PLC modulation unit 1441. The PLC modulating unit 1441 acquires the received power request output from the management unit 1475b, and transmits the acquired received current request to the smart meter SM. For example, the PLC modulation section 1441 transmits a power reception current request to the smart meter SM by the PLC communication method. The smart meter SM receives the received current request transmitted by the power cable 1b, and creates a received current response including information indicating the received current based on the received received current request. The smart meter SM transmits the generated received current response to the power cable 1b. The PLC modulation section 1441 of the power cable 1b receives the received power response transmitted by the smart meter SM, and outputs the received power response to the management section 1475b.
According to the charging system of the third embodiment, the power cable 1b includes the plug 11 connected to the power supply side, and the moving object connector 12 capable of connecting the moving object. The power cable 1b supplies electric power to the moving object via the plug 11 and the moving object connector 12. The power cable 1a is connected to the communication IF unit 1444 or the PLC modulation unit 1441 that receives a signal transmitted by the smart meter SM that monitors the current flowing through the main trunk, and is connected to the mobile power cable 1 via the connector 12 to be electrically connected. When the charging power to the mobile unit is suppressed based on the signal received by the CPLT unit 1472 that communicates with the body using the communication path and the communication IF unit 1444 or the PLC modulation unit 1441, the charging current A power control unit 1474 for notifying the mobile unit of the information indicating the value by using the communication path, and creating a receiving current request; transmitting the created receiving current request to the smart meter SM; The mobile communication device includes a management unit that determines whether to suppress the charging voltage of the moving object based on the received current value included in the transmitted received current response. With this configuration, the receiving current request can be transmitted to the smart meter SM, and based on the receiving current value included in the receiving current response transmitted by the smart meter SM, the power cable 1b suppresses the charging power of the moving object. It is possible to determine whether or not to perform the control, and in the case of suppression, information indicating the charging current value can be notified to the moving object. For this reason, it is possible to increase the reliability of control for supplying power to a moving object driven by using power.

(Modification of Third Embodiment)
In the charging system of the modification, the charging power value to be suppressed is adjusted according to the magnitude of the overcurrent in the above-described charging system.
FIG. 15 is a diagram illustrating an example of the breaking characteristic of the breaker. FIG. 15 shows the relationship between the magnitude of the overcurrent and the operation time. For example, when an overcurrent of 200% with respect to the rated current flows, it can be seen that the smart meter SM is automatically shut off within a few minutes after the overcurrent flows. It can be seen that as the overcurrent increases with respect to the rated current, the time from when the overcurrent flows to when the smart meter SM is automatically cut off becomes shorter.
The management unit 1475b of the power cable 1b acquires the received current response output from the communication IF unit 1444, and based on the information indicating the received current included in the acquired received current response, when the received current value is equal to or greater than the received current threshold. It is determined whether or not there is. When the receiving current value is equal to or greater than the receiving current threshold, the management unit 1475b creates charging power suppression information including information indicating the receiving current, and outputs the created charging power suppression information to the power control unit 1474. The power control unit 1474 obtains the charging power suppression information output by the management unit 1475b, and derives a statistical value such as dividing the charging power value by the suppression threshold power based on the obtained charging power suppression information, A charging current value is derived based on the derived statistical value. Specifically, as the value obtained by dividing the charging power by the suppression threshold power increases, the time from when the overcurrent flows to the time when the overcurrent is automatically cut off decreases. Increase the amount of suppression. That is, the charging power is reduced. In addition, the power control unit 1474 may set the charging power to zero when the value obtained by dividing the charging power by the suppression threshold power is equal to or greater than a predetermined statistical threshold. With this configuration, the interruption of the smart meter SM can be reduced.

<Example of configuration>
As an example of the configuration, a power supply that includes a plug connected to the power supply side and a connector connectable to a moving body (in the embodiment, the electric vehicle EV) and supplies power to the moving body via the plug and the connector A cable that receives a signal transmitted by a communication device that monitors the current flowing to the main trunk, and that uses a communication path between a self-powered cable and a mobile object that is electrically connected to the mobile device via a connector. The communication unit (in the embodiment, the communication IF unit 1444 and the PLC modulation unit 1441) that communicates with the communication unit, and when the charging power to the mobile unit is suppressed based on the signal received by the communication unit, information indicating the charging current value is transmitted. A power cable including a control unit (in the embodiment, a CPLT unit 1472) that notifies a mobile unit using a communication path.
As an example of a configuration, the control unit reduces the charging power value at a predetermined rate when suppressing the charging power to the moving body.
As one configuration example, the control unit reduces the charging power value to a predetermined value when suppressing the charging power of the moving object.
As an example of the configuration, the control unit determines whether or not to suppress the charging power of the mobile object based on the received current value that is the power supplied by the master included in the signal. 1475a and 1475b), and the control unit notifies the mobile unit of information indicating the charging current value using the communication path when the management unit determines to suppress the charging power of the mobile unit.
As one configuration example, the communication device is a smart meter, the management unit creates a reception current request that is a signal requesting a reception current value, and the communication unit transmits the reception current request created by the management unit to the smart meter. And receives the signal transmitted by the smart meter in response to the received current request.
As one configuration example, when suppressing the charging power of the moving object, the control unit determines the charging current value based on a statistical value derived based on the charging power value.

  Note that the control unit 147 according to the embodiment includes a computer system. The control unit 147 records a program for realizing the above-described processing on a computer-readable recording medium, causes the computer system to read the program recorded on the recording medium, and executes the program. Processing may be performed. Here, the “computer system” may include an OS and hardware such as peripheral devices. The “computer-readable recording medium” is a writable nonvolatile memory such as a flexible disk, a magneto-optical disk, a ROM, a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, or the like. Storage device.

  Further, a “computer-readable recording medium” refers to a volatile memory (for example, a DRAM (Dynamic Random Access Memory), which holds programs for a certain period of time. Further, the above program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  As described above, the embodiments for carrying out the present invention have been described using the embodiments. However, the present invention is not limited to such embodiments at all, and various modifications and substitutions may be made without departing from the gist of the present invention. Can be added. For example, the modifications and the like shown in the present embodiment can be applied to other embodiments. Further, in the embodiment, the storage battery BT mounted on the electric vehicle EV has been described as an example of the storage battery. May be targeted.

1, 1a, 1b power cable, 11 plug, 12 mobile connector, 14 CBOX, 141 measuring unit, 142 earth leakage breaker, 143 switch, 144 communication unit, 147 control unit PS: power supply equipment, ELB: earth leakage breaker, CE: charging outlet, LN1, LN2, LN3: cable, EV: electric vehicle

Claims (7)

A power cable that includes a plug connected to a power supply side and a connector connectable to a moving body, and supplies power to the moving body via the plug and the connector.
A communication that receives a signal transmitted by a communication device that monitors a current flowing through a main trunk and that communicates with the mobile object that is electrically connected to a power supply cable through the connector using a communication path. Department and
Based on the signal received by the communication unit, when suppressing the charging power to the mobile, information indicating a charging current value, using the communication path, a control unit that notifies the mobile body. Power cable.   The power cable according to claim 1, wherein the control unit reduces the charging power value at a predetermined rate when suppressing the charging power to the moving body.   The power cable according to claim 1, wherein the control unit reduces the charging power value to a predetermined value when suppressing the charging power of the moving body. The control unit includes a management unit that determines whether to suppress charging power of the moving object based on a received current value that is power supplied by the master included in the signal,
The control unit notifies the mobile unit of information indicating the charging current value by using the communication path when the management unit determines that the charging power of the mobile unit is to be suppressed, using the communication path. A power cable according to any one of claims 1 to 3. The communication device is a smart meter,
The management unit creates a receiving current request that is a signal requesting the receiving current value,
5. The communication unit according to claim 4, wherein the communication unit transmits the received current request created by the management unit to the smart meter, and receives the signal transmitted by the smart meter in response to the received current request. 6. power cable.   The control unit according to claim 4, wherein the control unit determines the charging current value based on a statistical value derived based on a charging power value when suppressing the charging power of the moving body. The power cable according to one paragraph. A charging control method, comprising: a plug connected to a power supply side; and a connector connectable to a moving object, wherein a power cable that supplies electric power to the moving object through the plug and the connector is executed.
Receiving a signal transmitted by the communication device that monitors the current flowing to the master;
Based on the signal received in the step of receiving the signal, when suppressing charging power to the moving body, information indicating a charging current value is electrically connected to the own power cable via the connector. Using the communication path between the mobile device and the mobile device to be notified.

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