JP7648812B1 - Electric vehicle power supply control system, program, and method - Google Patents

Abstract

An electric vehicle power supply control system, program, and method for controlling a maximum supply power that can be supplied by a power supply device for an electric vehicle are provided.
[Solution] An electric vehicle power supply control system 1 includes a control device 11 that transmits information for setting a maximum supply power in an electric vehicle power supply device 21 that supplies power to an electric vehicle, and the control device comprises at least one of a target space power measuring unit 113 that measures target space power consumption supplied to a target space load, which is a load that consumes power within the target space, and a generated power measuring unit that measures the target space generated power generated by a power generation device provided in the target space, and a supply power control unit 115 that transmits at least one of target space power consumption information, target space generated power information, calculated power information and maximum supply power information to the electric vehicle power supply device.
[Selected figure] Figure 5

Description

This disclosure relates to an electric vehicle power supply control system, program, and method.

Efforts have been made to resolve problems that arise when using commercial power sources in the home to charge large-capacity storage batteries in electric vehicles such as electric vehicles (hereinafter referred to as "EVs") and photoelectric hybrid electric vehicles (PHVs) (see Patent Document 1). Patent Document 1 shows a distribution board device that gives top priority to current consumption required in the home, and can charge the PHV/EV with the maximum current within the remaining allowable current while avoiding the inconvenience of having to turn off electrical appliances that are normally used when charging the PHV/EV.

JP 2012-125091 A

The distribution board device disclosed in Patent Document 1 determines whether the current consumption value is smaller than the allowable current value, and if the current consumption value exceeds the allowable current value, opens the electromagnetic switch for the PHV/EV, and the PHV/EV is not charged and power is supplied to the home. If it is determined that the current consumption value does not exceed the allowable current value, it closes the electromagnetic switch and charges the PHV/EV with a current value Ic obtained by subtracting the current consumption value Ia from the allowable current value Ib. However, the controller 16 included in the distribution board device of Patent Document 1 merely determines whether the current consumption value Ia is smaller than the allowable current value Ib, and controls whether or not to supply the current value Ic by opening and closing the electromagnetic switch 61, and it is difficult to say that it is capable of finely controlling the current value Ic for charging electric vehicles such as PHVs/EVs. The controller 16 is also configured to receive the output of the branch breakers for all loads (such as home appliances) and control the current supply to each load, but if the controller 16 were to supply current to the loads such as home appliances in this way, the structure would become complicated and the introduction cost would be high. In recent years, charging via a power supply device dedicated to charging electric vehicles has become common, and there is a demand for a system that can precisely control the maximum supply power according to the power consumption in the target space while being compatible with such power supply devices for electric vehicles.

The present disclosure therefore aims to provide an electric vehicle power supply control system, program, and method that can precisely set the maximum supply power in accordance with the power consumption and power generation within a target space using a control device or an electric vehicle power supply device, in particular by providing a control device that transmits information for setting the maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle.

The electric vehicle power supply control system according to one aspect of the present invention is an electric vehicle power supply control system including a control device that transmits information for setting the maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle, and the control device includes at least one of a target space power measurement unit that measures the target space power consumption supplied to a load in the target space that is a load that consumes power in the target space, or a generated power measurement unit that measures the target space generated power generated by a power generation device provided in the target space, and a supply power control unit that transmits to the electric vehicle power supply device at least one of target space power consumption information indicating the target space power consumption, target space generated power information indicating the target space generated power, calculated power information calculated based on at least one of the target space power consumption or the target space generated power, or maximum supply power information indicating the maximum supply power.

According to one aspect of the present invention, by providing a control device that transmits information for setting the maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle, it is possible to provide an electric vehicle power supply control system, program, and method that allows the control device and electric vehicle power supply device to precisely set the maximum supply power according to the power consumption and power generation within the target space.

1 is a diagram showing a configuration example of an electric vehicle power supply control system according to a first embodiment; FIG. 2 is a diagram illustrating an example of a distribution board according to the first embodiment. 1 is a diagram showing an example of a distribution board having a built-in control device according to a first embodiment; FIG. 1 is a diagram showing an example of an electric wire according to a first embodiment. 1 is a diagram showing an example of an electric vehicle power supply control system according to a first embodiment; FIG. 4 is a diagram showing another example of the electric vehicle power supply control system according to the first embodiment. FIG. 4 is a diagram showing another configuration example of the electric vehicle power supply control system according to the first embodiment. FIG. 11 is a diagram showing a configuration example of an electric vehicle power supply control system including a power generation device according to a second embodiment. FIG. 11 is a diagram illustrating an example of a distribution board according to a second embodiment. FIG. 11 is a diagram showing an example of an electric vehicle power supply control system according to a second embodiment. FIG. 11 is a diagram showing another configuration example of an electric vehicle power supply control system according to the second embodiment. FIG. 11 is a diagram showing a configuration example of an electric vehicle power supply control system including a power generation device according to a third embodiment. FIG. 11 is a diagram showing an example of an electric vehicle power supply control system according to a third embodiment. FIG. 11 is a diagram showing another configuration example of an electric vehicle power supply control system according to the third embodiment.

The following describes an embodiment of the present invention with reference to the drawings.

[Item 1]
An electric vehicle power supply control system including a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
At least one of a target space power measuring unit that measures the target space power consumption supplied to a load in the target space that is a load that consumes power in the target space, and a generated power measuring unit that measures the target space generated power generated by a power generating device provided in the target space;
a supply power control unit that transmits to the electric vehicle power supply device at least one of target space power consumption information indicating the target space power consumption, target space generated power information indicating the target space generated power, calculated power information calculated based on at least one of the target space power consumption or the target space generated power, or maximum supply power information indicating the maximum supply power;
An electric vehicle power supply control system comprising:
[Item 2]
An electric vehicle power supply control system including a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
a target space power measuring unit that measures a target space power consumption supplied to a target space load that is a load that consumes power in the target space;
a supply power control unit that transmits at least one of target space power consumption information indicating the target space power consumption, calculated power information calculated based on the target space power consumption, or maximum supply power information indicating the maximum supply power to the electric vehicle power supply device; and
An electric vehicle power supply control system comprising:
[Item 3]
An electric vehicle power supply control system including a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
a power generation measuring unit for measuring the power generation in the target space generated by a power generation device provided in the target space;
a supply power control unit that transmits at least one of target space generated power information indicating the target space generated power, calculated power information calculated based on the target space generated power, or maximum supply power information indicating the maximum supply power to the electric vehicle power supply device; and
An electric vehicle power supply control system comprising:
[Item 4]
An electric vehicle power supply control system including a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
a target space power measuring unit that measures a target space power consumption supplied to a target space load that is a load that consumes power in the target space;
a power generation measuring unit for measuring the power generation in the target space generated by a power generation device provided in the target space;
a supply power control unit that transmits to the electric vehicle power supply device at least one of target space power consumption information indicating the target space power consumption and target space generated power information indicating the target space generated power, or calculated power information calculated based on the target space power consumption and the target space generated power, or maximum supply power information indicating the maximum supply power;
An electric vehicle power supply control system comprising:
[Item 5]
The electric vehicle power supply device includes:
a maximum supply power information transmission unit that generates maximum supply power information indicating the maximum supply power that can be supplied to the electric vehicle based on at least any one of the power information of the target space power consumption information, the target space power generation information, and the calculated power information, and transmits the maximum supply power information to the electric vehicle;
5. The electric vehicle power supply control system according to claim 1, further comprising:
[Item 6]
The electric vehicle power supply device includes:
a maximum supply power information transmitting unit configured to transmit the received maximum supply power information to the electric vehicle;
6. The electric vehicle power supply control system according to claim 1, further comprising:
[Item 7]
7. The electric vehicle power supply control system according to any one of claims 1 to 6, further comprising an electric vehicle power supply device breaker for wiring for supplying power to the electric vehicle power supply device.
[Item 8]
8. The electric vehicle power supply control system according to item 7, wherein the breaker for the electric vehicle power supply device is provided in a distribution board in the target space.
[Item 9]
8. The electric vehicle power supply control system according to item 7, wherein the breaker for the electric vehicle power supply device is provided in a power meter of the target space.
[Item 10]
10. The electric vehicle power supply control system according to claim 1, wherein the control device is a power meter in a target space.
[Item 11]
A program for controlling a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device
At least one of a step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space, and a step of measuring a target space power generated by a power generation device provided in the target space;
transmitting at least one of target space power consumption information indicating the target space power consumption, target space generated power information indicating the target space generated power, calculated power information calculated based on at least one of the target space power consumption or the target space generated power, or maximum supply power information indicating the maximum supply power to the electric vehicle power supply device;
A program to execute.
[Item 12]
A control method by a control device that transmits information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle, comprising:
The control device
At least one of a step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space, and a step of measuring a target space power generated by a power generation device provided in the target space;
transmitting at least one of target space power consumption information indicating the target space power consumption, target space generated power information indicating the target space generated power, calculated power information calculated based on at least one of the target space power consumption or the target space generated power, or maximum supply power information indicating the maximum supply power to the electric vehicle power supply device;
A method for performing.

<Configuration of electric vehicle power supply control system 1 according to the present invention>
1 is a diagram showing an example of the configuration of an electric vehicle power supply control system 1 according to the present embodiment 1. The electric vehicle power supply control system 1 in the present invention includes a control device 11, an electric vehicle power supply device 21, and an electric vehicle side power storage system 41.

The electric vehicle power supply control system 1 of the present invention includes a control device 11 that transmits information for setting the maximum supply power in an electric vehicle power supply device 21 that supplies power to an electric vehicle, and the control device 11 is equipped with at least one of a target space power measurement unit 113 that measures target space power consumption information indicating target space power consumption supplied to a target space load 31, which is a load that consumes power in the target space, or a generated power measurement unit 116 that measures the target space generated power generated by a power generation device equipped in the target space, and a supply power control unit 115 that transmits to the electric vehicle power supply device 21 at least one of (1) target space power consumption information indicating the target space power consumption, or (2) target space generated power information indicating the generated power generated by a power generation device equipped in the target space, or (3) calculated power information calculated based on at least one of the target space power consumption or the target space generated power, or (4) maximum supply power information indicating the maximum supply power. The "target space" here refers to a space that has a power supply facility, and may be, for example, a space such as an ordinary household or a small facility that is electrically equivalent to a home, such as a community center, but is not limited to these, and may be any space, such as a building, structure, or management area, as long as the above invention is applicable.

If the electric vehicle power supply control system 1 of the present invention is considered as a program, it would look like this:

A program for controlling a control device 11 that transmits information for setting the maximum supply power in an electric vehicle power supply device 21 that supplies power to an electric vehicle, the program executing at least one of the steps of measuring the target space power consumption supplied to a target space load 31, which is a load that consumes power in the target space, or measuring the target space generated power generated by a power generation device 51 equipped in the target space, and a step of transmitting to the electric vehicle power supply device 21 at least one of target space power consumption information indicating the target space power consumption, target space generated power information indicating the generated power generated by a power generation device equipped in the target space, calculated power information calculated based on at least one of the target space power consumption or the target space generated power, and maximum supply power information indicating the maximum supply power.

The electric vehicle power supply control system 1 of the present invention can be considered as a control method as follows.

A method for controlling an electric vehicle power supply control system 1 including a control device 11 that transmits information for setting the maximum supply power in an electric vehicle power supply device 21 that supplies power to an electric vehicle, the method including at least one of the steps of measuring the target space power consumption supplied to a target space load 31, which is a load that consumes power in the target space, by the control device 11, or measuring the target space power generated by a power generation device equipped in the target space, and transmitting to the electric vehicle power supply device 21 at least one of target space power consumption information indicating the target space power consumption, target space power generation information indicating the power generated by a power generation device equipped in the target space, calculated power information calculated based on at least one of the target space power consumption or the target space power generation, and maximum supply power information indicating the maximum supply power.

In the electric vehicle power supply control system 1 of the present invention, by providing a control device that transmits information for setting the maximum supply power in the electric vehicle power supply device 21 that supplies power to the electric vehicle, it is possible to provide an electric vehicle power supply control system that can precisely set the maximum supply power according to the power consumption and power generation in the target space using the control device 11 and the electric vehicle power supply device 21.

<Embodiment 1>

<Configuration of electric vehicle power supply control system 1 in embodiment 1>
1 is a diagram showing an example of the configuration of an electric vehicle power supply control system 1 according to the present embodiment 1. The electric vehicle power supply control system 1 in the present embodiment 1 includes a control device 11, an electric vehicle power supply device 21, and an electric vehicle side power storage system 41.

As shown in FIG. 1, the commercial power line E is attached to a utility pole EP by a mounting part (not shown). However, the commercial power line E may be buried underground without being attached to the utility pole EP. Commercial power flows through the commercial power line E.

One end of the power cable EC is connected to a commercial power line E so that commercial power can be carried. The other end of the power cable EC is connected to a power meter EM. The power meter EM is an electrical instrument that accumulates and measures the power obtained through the power cable EC.

One end of the first power cable EC1 is connected to the power meter EM. A portion of the first wiring W1 is pulled into the house HU and connected to the distribution board DB.

Figure 2 is a diagram showing an example of a distribution board DB according to the first embodiment. The distribution board DB includes a main breaker MB, an earth leakage circuit breaker ELB, and a branch breaker BB.

The main breaker MB is a commercial power inlet device and protection device. The main breaker MB detects the current throughout the target space and cuts off the circuit if there is an abnormality. The main breaker MB is equipped with a power receiving unit and a power supplying unit. The power receiving unit may be a power receiving terminal. The power supplying unit may be a power supplying terminal. The main breaker MB may be interpreted as a service breaker. Commercial power is the electricity supplied from power plants to consumers (general homes and factories). Commercial power sources supplied in Japan are AC and come in voltages of 100V (mainly single-phase) and 200V (single-phase/three-phase).

The earth leakage circuit breaker ELB is a device that cuts off the circuit when it detects an electric leakage to prevent disasters. The earth leakage circuit breaker ELB has a power receiving unit and a power supplying unit. The power receiving unit may be a power receiving terminal. The power supplying unit may be a power supplying terminal. The earth leakage circuit breaker may be read as an earth leakage circuit breaker or an ELCB (Earth Leakage Circuit Breaker).

The branch breaker BB is a device that prevents power to the entire house from being cut off by shutting off only the circuit (branch circuit) that carries electricity from the distribution board to each room or outlet when the current flow exceeds the capacity of that circuit. The branch breaker BB has a power receiving unit and a power supply unit. The power receiving unit may be a terminal for receiving power. The power supply unit may be a terminal for supplying power. The branch breaker BB may be read as a wiring cutoff safety breaker.

As shown in FIG. 2, the other end of the first wiring W1 is connected to the power receiving section of the main breaker MB so that commercial power can be passed through it. Commercial power can be received by configuring the first wiring W1 with two wires, a 0V electric wire 0EL and a +100V electric wire +EL, as described below, or with two wires, a 0V electric wire 0EL and a -100V electric wire -EL, as described below, to receive approximately 100V, or by configuring it with two wires, a +100V electric wire +EL and a -100V electric wire -EL, as described below, to receive 200V, or by configuring it with three wires, a +100V electric wire +EL, a -100V electric wire -EL, and a 0V electric wire 0EL, as described below, to receive 100V or 200V. Note that other wirings may also be configured in a similar manner.

The second wiring W2 is connected at one end to the power supply section of the main breaker MB so that power can flow, and at the other end to the power receiving section of the earth leakage circuit breaker ELB.

The third wiring W3 is connected at one end to the power supply part of the earth leakage circuit breaker ELB so that power can flow, and at the other end to the power receiving part of the branch breaker BB.

Two or more branch breakers BB form a branch breaker group BBG. Therefore, the third wiring W3 is connected to the power receiving parts of all branch breakers BB included in the branch breaker group BBG (for simplicity of illustration, in FIG. 2 etc., it is connected to one branch breaker BB).

One end of the fourth wiring W4 is connected to the power supply unit of the branch breaker BB so that power can flow. The fourth wiring W4 also has a branch point SP at the other end. Two or more branch wirings SW have one end connected to the branch point SP of the fourth wiring W4 so that power can flow, and all or part of the other end is connected to a load 31 in the target space so that power can be supplied. The load 31 in the target space is a load that consumes power in the target space, such as home appliances such as televisions, air conditioners, hot water heaters, lighting fixtures, and cooking appliances, and includes a variety of things.

As shown in FIG. 1, two or more fourth wirings W4 form a fourth wiring group W4G (for simplicity, only one fourth wiring W4 from each branch breaker BB is shown, but this is not limited to this). Therefore, the fourth wiring group W4G includes two or more fourth wirings W4. Note that when the first current sensor CS1 is included in the fourth wiring group W4G, the first current sensor CS1 is connected to all of the fourth wirings W4 included in the fourth wiring group W4G.

The first current sensor CS1 is a sensor that measures the current flowing through the wiring. The first current sensor CS1 may be composed of, for example, one or more clamp current measurement sensors. The first current sensor CS1 has an information output unit for transmitting current data. The information output unit may be an information output terminal. In the figure, the current sensor CS is simply illustrated as being connected to the wiring to be measured, such as the third wiring W3, but it may be connected to a wiring indicating a reference power (which may be 0 V) for measuring the current (more specifically, for example, a configuration in which the reference power wiring is clamped). In addition, as described later, the wiring to be measured is not limited to the third wiring W3, but may be any wiring, such as the first wiring W1, the second wiring W2, the fourth wiring group W4G, the fifth wiring W5, and the seventh wiring W7 (i.e., the wiring for the load 31 in the target space, the wiring for the control device 11, and the wiring for the electric vehicle power supply device 21 may be provided with a common current sensor in all or part, or each may be provided with a current sensor). In addition, FIG. 3 illustrates a configuration in which the first current sensor CS1 (and the first voltage sensor VS1) are built into the distribution board DB, but this is not limited thereto, and each sensor may be provided on the wiring to be measured outside the distribution board DB.

The fifth wiring W5 has one end connected to the seventh wiring W7 (or the power supply section of the breaker EVB for the electric vehicle power supply device 21) so that electric power can be passed, and the other end connected to the power source power receiving section 111 of the control device 11. In addition, without being limited to this, the fifth wiring W5 may have a configuration in which, for example, one end is connected to any one or more fourth wirings W4 of the fourth wiring group W4G, and the other end is connected to the power source power receiving section 111 of the control device 11.

As shown in FIG. 2, the sixth wiring W6 has one end connected to the third wiring W3 so that electric power can be conducted, and the other end connected to the power receiving section of the breaker EVB for the electric vehicle power supply device 21. Note that the connection configuration is not limited to this, and for example, the sixth wiring W6 may have one end connected to the earth leakage circuit breaker ELB in parallel with the third wiring W3. In this case, the first current sensor CS1 and the first voltage sensor VS1 may be provided respectively, or if only the power consumption of the load 31 in the target space is to be grasped, they may be provided only on the third wiring W3.

The seventh wiring W7 is connected at one end to the power supply section of the breaker EVB for the electric vehicle power supply device 21 so that electric power can be passed, and at the other end to the power source power receiving section 211 of the electric vehicle power supply device 21.

The first communication cable CC1 is connected at one end to the target space power measurement unit 113 of the control device 11 so that current data can be transmitted from the first current sensor CS1 to the control device 11, and at the other end to the information output unit of the first current sensor CS1.

The first current sensor CS1 transmits at least one of the current in the second wiring W2, the current in the third wiring W3, or the total current flowing through all of the fourth wiring W4, the fifth wiring W5 and the seventh wiring W7 as power data (which may also be called current data, and is also called power data because the voltage is generally roughly constant (e.g., 100V or 200V); same applies below) to the target space power measuring unit 113 of the control device 11 via the first communication cable CC1 (the illustrated configuration shows the first current sensor CS1 connected to the third wiring W3). The current of the second wiring W2, the current of the third wiring W3, or the total current flowing through all of the fourth wiring W4, the fifth wiring W5, and the seventh wiring W7 is the sum of the current supplied to the load 31 in the target space connected to the branch wiring SW branched from all of the fourth wiring W4, the current supplied from the fifth wiring W5 to the control device 11, and the current supplied from the seventh wiring W7 to the electric vehicle power supply device 21. Therefore, the first current sensor CS1 transmits at least one of the current of the second wiring W2, the current of the third wiring W3, or the total current supplied to the load 31 in the target space connected to the branch wiring SW branched from the fourth wiring W4 as power data to the target space power measurement unit 113 of the control device 11 via the first communication cable CC1.

Furthermore, the first voltage sensor VS1 may be connected to any of the first to eighth wirings W, such as the second wiring W2, the third wiring W3, or the fourth wiring W4. However, the first voltage sensor VS1 is not an essential component of the electric vehicle power supply control system 1. The first voltage sensor VS1 may also be built into the control device 11 and connected to the fifth wiring W5. When the first voltage sensor VS1 is connected to the second wiring W2, the third wiring W3, or the fourth wiring W4, the electric vehicle power supply control system 1 further includes a second communication cable CC2. The second communication cable CC2 has one end connected to the target space power measurement unit 113 of the control device 11 so that voltage data can be transmitted from the first voltage sensor VS1 to the target space power measurement unit 113 of the control device 11, and the other end connected to the voltage data transmission unit of the first voltage sensor VS1. The first voltage sensor VS1 generates voltage data of the measured voltage and transmits it from the voltage data transmission unit to the target space power measurement unit 113 of the control device 11 via the second communication cable CC2. Note that the voltage sensor VS is also shown in the figure as being connected to the wiring of the measurement target, such as the fourth wiring group W4G, in a simplified manner, but it may be connected to a wiring indicating a reference power (which may be 0 V) in addition to the wiring of the measurement target, or connected to these two wires when the measurement target is paired with a positive wiring and a negative wiring.

The first voltage sensor VS1 is connected to any one of the first to eighth wirings W, such as the second wiring W2, the third wiring W3, the fourth wiring W4, or the fifth wiring W5. When the target space power measurement unit 113 of the control device 11 receives voltage data from the voltage data transmission unit of the first voltage sensor VS1, the control device 11 can recognize the voltage of the power flowing through the second wiring W2, the third wiring W3, or the fourth wiring W4.

The eighth wiring W8 is connected at one end to the electric vehicle power supply unit 212 of the electric vehicle power supply device 21, and at the other end to the supply power receiving unit 411 of the electric vehicle side power storage system 41 of the electric vehicle, so that electric power can be passed through.

Figure 3 is a diagram showing an example of a distribution board DB with a built-in control device 11 as a modified example of the first embodiment. That is, the control device 11 may be sized to be able to be built into the distribution board DB and built into the distribution board DB. When the control device 11 is built into the distribution board DB, the fifth wiring W5 may also be built into the distribution board DB, and a part of the first communication cable CC4 may also be built into the distribution board DB. Other points are the same as those described in the first embodiment above, and will not be described here.

Figure 4 shows an example of an electric wire EL in wiring W according to this embodiment. The voltage of the 0V electric wire 0EL is approximately 0V. The voltage of the +100V electric wire +EL is approximately +100V. The voltage of the -100V electric wire -EL is approximately -100V.

The first wiring W1 to the eighth wiring W8 may be configured with two wires, 0V electric wire 0EL and +100V electric wire +EL, or two wires, 0V electric wire 0EL and -100V electric wire -EL, or two wires, +100V electric wire +EL and -100V electric wire -EL, or three wires, 0V electric wire 0EL, +100V electric wire +EL and -100V electric wire -EL. It is not necessary that all wirings W have the same electric wire EL configuration, and the upstream wirings W such as the first wiring W1 may have the above three-wire configuration, and the seventh wiring W7 and the eighth wiring W8 may have any of the above two-wire configurations (particularly, a two-wire configuration of +100V electric wire +EL and -100V electric wire -EL). In addition, a separate earth wire may be provided, for example, it may be drawn from the first wiring W1, or a ground rod (ground rod) may be provided on the electric vehicle power supply device 21 side to wire the earth wire. In particular, the eighth wiring W8 may include a ground line, a communication line, and a connection confirmation line in addition to the power line, and may be configured to transmit and receive information such as maximum power supply information via the communication line.
<Configuration of control device 11>

Figure 5 is a diagram showing an example of an electric vehicle power supply control system 1 according to this embodiment. As described above, the electric vehicle power supply control system 1 includes a control device 11, an electric vehicle power supply device 21, and an electric vehicle side storage system 41.

As described above, the control device 11 includes a power source power receiving unit 111, an allowable power storage unit 112, a target space power measuring unit 113, a power difference setting unit 114, a supply power control unit 115, and an information processing unit 119.

The power source power receiving unit 111 receives the power source necessary for the operation of the control device 11. The power source power may be received, for example, from any of the wiring W (any of the third wiring W3 to the seventh wiring W7 or a dedicated wiring W (not shown)) under the earth leakage circuit breaker ELB, or from a dedicated battery (not shown), a dedicated power generation device (for example, solar power), a power generation device described below, or the like, but is not limited to these.

The allowable power storage unit 112 stores allowable power information that indicates the allowable power, which is the upper limit of power that can be consumed in a target space that receives commercial power from a commercial power grid.

Electricity is

Power = Voltage x Current

The unit of power is W, the unit of voltage is V, and the unit of current is A.

The commercial power received by each target space is generally a fixed value of approximately 100 V or approximately 200 V, so the allowable power storage unit 112 may store only the allowable current value (A) for the allowable power. However, the allowable power storage unit 112 may store both the commercial power voltage value (V) and the allowable current value (A), or may store the allowable power value (W).

The allowable power storage unit 112 may store allowable power information in advance, or may store allowable power information indicated by a physical switch for setting the allowable power provided in the control device 11, or may store the allowable power information by receiving the allowable power information via the information processing unit 119 described below. The allowable power information stored in the allowable power storage unit 112 may be, for example, 30 (A) as a breaker capacity, or may be a value that is a predetermined value lower than the breaker capacity. In addition, when the allowable power storage unit 112 stores both the voltage value (V) of the commercial power and the allowable current value (A), the commercial power value may be, for example, 100 (V) or 200 (V), and the allowable current value may be, for example, 30 (A).

The information processing unit 119 is a functional unit that manages information processing such as receiving or transmitting predetermined information in the control device 11, reading information from a predetermined storage unit, and storing information in a predetermined storage unit. The information processing unit 119 accepts input of allowable power information to be stored in the allowable power storage unit 112. The information processing unit 119 accepts input of allowable power information to be stored in the allowable power storage unit 112, whether the allowable power is stored in advance in the allowable power storage unit 112 or not. When the allowable power information is stored in the allowable power storage unit 112, and new allowable power information is input to the information processing unit 119, the allowable power storage unit 112 erases the stored allowable power information, or stores the new allowable power information received by the information processing unit 119 by linking it to storage time information (e.g., information on the date of storage or information on the date and time) so that the latest allowable power information can be grasped. When the allowable power information is not stored in the allowable power storage unit 112, and the allowable power information is input, the allowable power storage unit 112 stores the allowable power information received by the information processing unit 119.

The information processing unit 119 may receive the allowable power information via an input/output port. The input/output ports include RS-232, RS485, RS422, USB (Universal Serial Bus), i.LINK, FireWire, PS/2 connector, VGA terminal, DVI port, etc.

When the information processing unit 119 is connected to a terminal device (e.g., a personal computer or a mobile terminal device such as a smartphone) or an input/output port of a server via a communication cable, the personal computer or server may transmit allowable power information to the information processing unit 119.

The information processing unit 119 may also receive the allowable power via a wireless receiving device possessed by the control device 11. In this case, the allowable power information may be transmitted from a personal computer, a server, a smartphone, or a mobile phone via a predetermined wireless network by wireless communication. The wireless network may be a short-range communication interface such as Bluetooth (registered trademark), BLE (Bluetooth Low Energy), or Wi-Fi. As a more specific example, a predetermined application (for example, a dedicated application or a browser application for using a web service) may be started on a terminal such as a smartphone, and the allowable power input by an input operation on the application may be transmitted as the allowable power information. Various information may be transmitted from the terminal by communicating directly with the control device 11 or the electric vehicle power supply device 21 via a network, and/or may be transmitted from the terminal to a server via a network, and then transmitted from the server to the control device 11 or the electric vehicle power supply device 21 via the network.

In the allowable power memory unit 112, allowable power information is stored in advance, and if the allowable power information stored in the allowable power memory unit 112 cannot be changed, the control device 11 does not need to have a function for accepting the allowable power information in the information processing unit 119.

The target space power measurement unit 113 measures the target space power consumption supplied to the target space load 31, which is a load that consumes power in the target space. The target space power measurement unit 113 receives the power data transmitted by the first current sensor CS1 as the target space power consumption. Alternatively, or in addition, the target space power measurement unit 113 receives the power data (voltage data) transmitted by the first voltage sensor VS1 as the target space power consumption. Note that the above-mentioned "receiving power data as the target space power consumption" may include, for example, calculating power based on the power data (current data) and reference voltage data transmitted by the first current sensor CS1, or based on the voltage data and reference current data transmitted by the first voltage sensor VS1, or based on the power data (current data) transmitted by the first current sensor CS1 and the voltage data transmitted by the first voltage sensor VS1, and calculating the power as the target space power consumption. In addition, when each sensor is connected to the second wiring W2 or the third wiring W3, the target space power consumption may also include the power consumption of the control device 11 and the power supply device 21 for the electric vehicle.

The power difference setting unit 114 sets the power difference, which is the difference between the above-mentioned allowable power and the target space power consumption, as power difference information.

The supply power control unit 115 transmits at least one of the target space power consumption information indicating the target space power consumption described above or the maximum supply power information indicating the maximum supply power to the electric vehicle power supply device.

Here, the information transmitted by the power supply control unit 115 may differ depending on whether the control unit 11 has a function for calculating the maximum supply power. That is, first, when the control unit 11 has a function for calculating the maximum supply power, the power supply control unit 115 generates maximum supply power information indicating the maximum supply power that can be supplied by the electric vehicle power supply device 21, for example, based on the above-mentioned power difference. Note that the maximum supply power information indicating the maximum supply power may be information indicating a duty ratio corresponding to the maximum supply power, for example, when the supply power described below is adjusted by setting a duty ratio.

The supply power control unit 115 may set all of the power values of the power difference as the maximum supply power.

Alternatively, if the entire power value of the power difference is set as the maximum supply power, when the electric vehicle power supply device 21 supplies the maximum supply power to the electric vehicle, if the target space power consumption increases suddenly, it is possible that the target space power consumption will exceed the allowable power. Therefore, the supply power control unit 115 may set the margin power difference, which is obtained by further subtracting the margin power from the power difference, as the maximum supply power.

Alternatively, the supply power control unit 115 may set the power value of the maximum supply power by multiplying the power value of the power difference by a coefficient greater than or equal to 0 and less than or equal to 1.

In addition, when the supply power control unit 115 sets the power obtained by multiplying the power value of the power difference by a coefficient that is 0 or more and 1 or less as the maximum supply power, the supply power control unit 115 may change the coefficient according to the ratio of the power value of the power difference to the power value of the allowable power. That is, the supply power control unit 115 may increase the coefficient when the power value of the power difference is large compared to the power value of the allowable power, and may decrease the coefficient when the power value of the power difference is small compared to the power value of the allowable power. In this way, when the power value of the power difference is large compared to the power value of the allowable power, the coefficient is increased to increase the maximum supply power that can be supplied by the electric vehicle power supply device 21, and the supply power supplied to the electric vehicle side storage system 41 provided in the electric vehicle can be set to be large. In addition, when the power value of the power difference is small compared to the power value of the allowable power, the coefficient is decreased to decrease the maximum supply power, and the possibility that power will not be supplied from the main breaker MB to the load 31 in the target space due to the target space power consumption exceeding the allowable power can be reduced.

表１ When supply power control section 115 changes the coefficient according to the power value of the power difference with respect to the power value of the allowable power, the coefficient may be changed as shown in Table 1, for example.

Table 1

Therefore, by setting the maximum supply power so that the maximum supply power is equal to or smaller than the power difference (i.e., equal to or less than the power difference), the supply power control unit 115 can set the maximum supply power so as not to exceed the allowable power.

The power multiplied by the coefficient and the margin power difference obtained by subtracting the margin power are also called "calculated power."

The coefficient or margin power may be arbitrarily set by a user (user or installer, etc.). More specifically, a user may start a predetermined application (for example, a dedicated application or a browser application for using a web service) on a terminal such as a smartphone, and the coefficient or margin power input by an input operation on the application may be transmitted as coefficient information or margin power information to the control device 11 or the electric vehicle power supply device 21 via a network. The coefficient or margin power may be repeatedly set on a predetermined schedule. That is, the coefficient or margin power may be set by a user for a predetermined time unit of a day (for example, 0.5 hour unit, 1 hour unit, etc.) or for a period unit (for example, a unit preset on the system such as a day of the week, a week, a month, morning, afternoon, evening, etc.), and after the user sets it, the coefficient or margin power may be set as set for the corresponding time period or period (day of the week, week, month, etc.). Alternatively, two or more settings with different coefficients or margin power settings may be prepared in advance on the system and selected according to user operation (for example, a first setting with a coefficient of 1 or margin power of 0 during the nighttime hours and a second setting with a coefficient of less than 1 or margin power greater than 0 during other hours may be selected). Furthermore, instead of the coefficient or margin power, the user may be able to directly set the maximum supply power. As described above, various information may be transmitted from the terminal by directly communicating with the control device 11 or the electric vehicle power supply device 21 via a network, and/or may be transmitted from the terminal to a server via a network and then transmitted from the server to the control device 11 or the electric vehicle power supply device 21 via a network.

Next, when the control device 11 does not have a function for calculating the maximum supply power and the electric vehicle power supply device 21 has a function for calculating the maximum supply power, the supply power control unit 115 transmits, for example, target space power consumption information used to calculate the maximum supply power to the electric vehicle power supply device 21 via, for example, the fourth communication cable CC4. On the other hand, the electric vehicle power supply device 21 may have part of the functions of the supply power control unit 115 described above as a functional unit (for example, the supply power control unit 213 in FIG. 6), and may set the maximum supply power similarly to the supply power control unit 115 based on the target space power consumption information received from the control device 11. In this case, the allowable power storage unit 112 and the power difference setting unit 114 may be provided in the electric vehicle power supply device 21, or the allowable power information and the power difference information may be transmitted to the electric vehicle power supply device 21.

Therefore, by setting the maximum supply power so that the electric vehicle power supply device 21 is equal to or smaller than the power difference (i.e., equal to or less than the power difference), the electric vehicle power supply device 21 can set the maximum supply power so as not to exceed the allowable power.

<Configuration of electric vehicle power supply device 21>
5, the electric vehicle power supply device 21 includes a power source power receiving unit 211 that receives power from a power source, and an electric vehicle power supply unit 212 that supplies supply power to the electric vehicle side power storage system 41. Note that it is preferable that the electric vehicle power supply device 21 conforms to predetermined standards such as SAEJ1772 and IEC61851/62196.

As described above, the electric vehicle power supply unit 212 supplies the supply power (mainly charging power, so it can also be called charging power) to the electric vehicle side storage system 41. The supply power is controlled in the electric vehicle side storage system 41 based on the maximum supply power information of the received power. However, without being limited to this, the supply power may be controlled in the electric vehicle power supply unit 212 based on the maximum supply power information and electric vehicle related information (for example, information on the mounted storage battery (current amount of stored power, temperature, voltage, etc.) and information on the state of the electric vehicle (temperature, equipment in operation, etc.)), or may be controlled based on the supply power instruction information received from the electric vehicle side storage system 41. The supply power instruction information may be, for example, information that instructs the supply power for a predetermined period. More specifically, for example, in a configuration in which power supply with a predetermined duty ratio is performed from the electric vehicle power supply device 21, the supply power instruction information may be instruction information that specifies the duty ratio.

The information processing unit 219 is a functional unit that manages information processing such as receiving or transmitting specific information in the electric vehicle power supply device 21, reading information from a specific memory unit, and storing information in a specific memory unit, and for example, transmits maximum supply power information received from the control device 11 via the communication line of the eighth wiring W8.

<Configuration of electric vehicle side power storage system 41>
The electric vehicle power supply control system 1 includes an electric vehicle side power storage system 41 provided in the electric vehicle. The electric vehicle side power storage system 41 includes a supplied power receiving unit 411 that receives supplied power from the electric vehicle power supply unit 212 of the electric vehicle power supply device 21, a storage battery 412 in which the received power is stored, a received power control unit 413 that controls the received power, and an information processing unit 419. In this manner, the received power received from the electric vehicle power supply unit 212 of the electric vehicle power supply device 21 can be stored in the storage battery 412.

The electric vehicle side power storage system 41 is generally provided inside the body of the electric vehicle. However, the electric vehicle side power storage system 41 may also be provided outside the body of the electric vehicle.

The supply power receiving unit 411 receives supply power from the electric vehicle power supply unit 212 of the electric vehicle power supply device 21. When the supply power is alternating current (AC), the supply power receiving unit 411 preferably has an alternating current/direct current (AC/DC) conversion function. In addition, the supply power receiving unit 411 controls the received supply power to a specified received power based on the control of the received power control unit 413 described later.

As shown in FIG. 1, one end of the eighth wiring W8 is connected to the electric vehicle power supply unit 212 of the electric vehicle power supply device 21 so that the supply power can be conducted, and the other end is connected to the supply power receiving unit 411 of the electric vehicle side power storage system 41.

The storage battery 412 may be any existing storage battery that can store the received power. As an example, the supply power receiving unit 411 and the storage battery 412 may be connected by a wire (not shown), or a known wireless charging method may be used.

When, for example, there is no power stored in the storage battery 412, or when the power stored in the storage battery 412 is not sufficient to operate the storage system 41, the electric vehicle side power storage system 41 operates by consuming at least a portion of the received power received by the supply power receiving unit 411 to charge the storage battery 412. However, when the amount of power stored in the storage battery 412 is sufficient to operate the electric vehicle side power storage system 41, the electric vehicle side power storage system 41 receives the power necessary for the electric vehicle side power storage system 41 to operate from the power charged in the storage battery 412.

The received power control unit 413 controls the received power (charging power) to be the optimum power (current) equal to or less than the maximum available power, based on the maximum supply power information received from the electric vehicle power supply device 21 (e.g., information indicating the duty ratio corresponding to the maximum supply power. Note that when the control device 11 generates the maximum supply power information, this information is received by the electric vehicle power supply device 21 and transmitted from the electric vehicle power supply device 21) and electric vehicle-related information (e.g., information on the installed storage battery (current amount of stored power, temperature, voltage, etc.) and information on the state of the electric vehicle (temperature, devices in operation, etc.)).

The information processing unit 419 is a functional unit that manages information processing such as receiving or transmitting specific information in the electric vehicle side energy storage system 41, reading information from a specific memory unit, and storing information in a specific memory unit.

<Modification of the First Embodiment>
Fig. 7 is a diagram showing a modification of the present embodiment 1. Regarding the electric vehicle power supply control system 1 of this modification, only the parts different from the electric vehicle power supply control system 1 of the present embodiment 1 will be described. In this modification shown in Fig. 7, the breaker EVB (e.g., a ground fault breaker) for the electric vehicle power supply device 21 provided in the distribution board DB in the first embodiment is connected to the power meter EM.

That is, one end of the sixth wiring W6 is connected to the power meter EM so that power can be passed through it, and the other end is connected to the power receiving section of the breaker EVB for the electric vehicle power supply device 21.

The seventh wiring W7 is connected at one end to the power supply section of the breaker EVB for the electric vehicle power supply device 21 so that electric power can be passed, and at the other end to the power source power receiving section 211 of the electric vehicle power supply device 21.

This configuration makes it possible to install a breaker EVB by only working on the power meter EM outside the target space, without having to install a separate breaker EVB on the distribution board DM inside the target space.

In particular, when the sensors are provided on the second wiring W2 and the third wiring W3, unlike in the first embodiment, the power consumption of the electric vehicle power supply device 21 is not included in the target space power consumption, and the control device 11 cannot detect the power consumption of the electric vehicle power supply device 21. Therefore, the power supply control unit 115 may acquire power consumption information of the electric vehicle power supply device 21 via, for example, the fourth communication cable CC4, and further set the power obtained by subtracting the power consumption of the electric vehicle power supply device 21 from the power indicated by the power difference as the maximum supply power. This can be similarly processed by the power supply control unit 213 when setting the maximum supply power in the electric vehicle power supply device 21 as exemplified in FIG. 6. That is, the electric vehicle power supply device 21 receives the target space power consumption information via the fourth communication cable CC4, and acquires the power consumption information of the electric vehicle power supply device 21 within the electric vehicle power supply device 21, and the supply power control unit 213 can similarly process the power consumption information based on both power consumption information.

<Embodiment 2>
The electric vehicle power supply control system 1 of the second embodiment is a different embodiment from the electric vehicle power supply control system 1 of the first embodiment. Regarding the electric vehicle power supply control system 1 of the second embodiment, only the parts that are different from the electric vehicle power supply control system 1 of the first embodiment will be described.

Figure 8 is a diagram showing an example of an electric vehicle power supply control system 1 including a power generation device 51 according to the second embodiment. The electric vehicle power supply control system 1 of the second embodiment differs from the electric vehicle power supply control system 1 of the first embodiment in that it further includes a power generation device 51.

Figure 10 is a diagram showing an example of an electric vehicle power supply control system 1 according to the second embodiment. The electric vehicle power supply control system 1 of the second embodiment differs from the electric vehicle power supply control system 1 of the first embodiment in that the control device 11 includes a generated power measurement unit 116 that measures the generated power of the power generation device 51 instead of the target space power measurement unit 113.

The electric vehicle power supply control system 1 of the second embodiment also differs from the electric vehicle power supply control system 1 of the first embodiment in that it further includes a second current sensor CS2.

The power generation device 51 is a power generation device (including so-called renewable energy power generation devices or natural energy power generation devices) that generates electricity using at least one of sunlight, wind power, hydroelectric power, geothermal power, solar heat, heat in the atmosphere or other heat present in nature, or biomass (organic matter derived from plants and animals). The power generation device 51 is a power generation device installed in the target space, and if it is, for example, a solar power generation device or a wind power generation device, the power generation device 51 may be installed on the roof R of the house HU or in the garden (not shown).

If the power generation device 51 outputs DC power, a DC/AC converter 61 may be provided. The DC/AC converter 61 is a device that converts the DC power generated by the power generation device 51 into AC power. However, if the power generation device 51 outputs AC power, the DC/AC converter 61 does not need to be provided.

The ninth wiring W9 has one end connected to the power generation device 51 so that electric power can be passed, and the other end connected to the power receiving section of the DC/AC converter 61. As described above, when the power generation device 51 outputs AC power, the DC/AC converter 61 does not need to be provided, and the other end of the ninth wiring W9 may be connected to the distribution board DB.

The tenth wiring W10 has one end connected to the output of the DC/AC converter 61 so that power can flow, and the other end connected to the power receiving part of the main breaker MB built into the distribution board DB.

Figure 9 is a diagram showing an example of a distribution board DB according to the second embodiment. The electric vehicle power supply control system 1 of the second embodiment is also different from the electric vehicle power supply control system 1 of the second embodiment in that the power receiving unit of the main breaker MB is connected not only to the first wiring W1 through which commercial power flows, but also to the tenth wiring W10 through which generated power flows. If the power receiving unit of the main breaker MB is connected not only to the first wiring W1 through which commercial power flows, but also to the tenth wiring W10 through which generated power flows, the power receiving unit of the main breaker MB can receive not only commercial power, but also generated power (also called "target space generated power"). Note that when the received power is supplied to the target space load 31 or the electric vehicle power supply device 21, the target space generated power is configured to have priority over commercial power. This is because, generally, when the target space power consumption is equal to or less than the target space power generation, there is no need to take in power from commercial power, and it is possible to cover the power consumption with only the target space power generation, and when the target space power consumption is greater than the target space power generation, only the difference is taken in from commercial power. However, this is not limited to the above, and for example, when the second current sensor CS2 or the second voltage sensor CV2 detects that the target space power generation is being output, the connection destination may be switched by a switching device or the like, so that the target space power generation is given priority.

The second current sensor CS2 measures the current of the ninth wiring W9 or the tenth wiring W10 and generates second power data (current data) based on the measured current.

The third communication cable CC3 is connected at one end to the second current sensor CS2 and at the other end to the control device 11 so that second power data can be transmitted from the second current sensor CS2 to the control device 11.

As in the first embodiment, instead of or in addition to the second current sensor CS2 and the third communication cable CC3, a second voltage sensor VS2 may be provided to measure the voltage of the ninth wiring W9 or the tenth wiring W10 and generate second power data (voltage data) based on the measured voltage. Also, while FIG. 8 illustrates a configuration in which the sensor is provided outside the distribution board DB, the present invention is not limited to this and the sensor may be built into the distribution board DB and provided on the target wiring.

Here, similarly to the first embodiment, the information transmitted by the power supply control unit 115 may differ depending on whether the control unit 11 has a function for calculating the maximum supply power. That is, first, if the control unit 11 has a function for calculating the maximum supply power, the power supply control unit 115 generates maximum supply power information indicating the maximum supply power, which is the power that can be supplied by the electric vehicle power supply device 21, based on, for example, the above-mentioned target space power generation power.

The supply power control unit 115 may compare the allowable power with the target space power generation, and if it determines that the target space power generation is equal to or less than the allowable power value, set all of the power values of the target space power generation as the maximum supply power.

The allowable power in the configuration of the present invention is the same as in embodiment 1, since the allowable power that can be consumed in the target space is derived from the allowable current (allowable power) of the main breaker MB. Even if the target space generated power is equal to or less than the allowable power value, if the supply power control unit 115 sets all of the power values of the target space generated power as the maximum supply power, when the electric vehicle power supply device 21 supplies the maximum supply power to the electric vehicle, if the target space power consumption increases, the sum of the supply power by the electric vehicle power supply device 21 (in this case, the target space generated power) and the target space power consumption may exceed the allowable power, so the margin target space generated power, which is the target space generated power minus the margin power, may be set as the maximum supply power.

Also, as in the first embodiment, the supply power control unit 115 may set the power value of the maximum supply power by multiplying the power value of the power generated in the target space by a coefficient that is equal to or greater than 0 and equal to or less than 1. Details will be omitted as this may be the same as in the first embodiment where the power difference is multiplied by a coefficient (i.e., the "power difference" in the first embodiment is replaced with "power generated in the target space").

Therefore, by setting the maximum supply power so that the maximum supply power is equal to or smaller than the target space power generation power (i.e., equal to or less than the target space power generation power), the supply power control unit 115 can set the maximum supply power so as not to exceed the allowable power.

Also, as in the first embodiment, the coefficient and margin power may be arbitrarily set by the user (user or installer, etc.). In the second embodiment, instead of or in addition to the configuration of the first embodiment, for example, the user may be able to select a mode in which the coefficient is set relatively higher or the margin power is set relatively lower during daytime hours, including daytime, than during other time periods. This makes it possible to charge by using a lot of generated power in a power generation device that generates a lot of power during the day, such as solar power generation, and to reduce the amount of power purchased from the power company. Alternatively, the user may be able to select a mode in which the coefficient is set relatively higher or the margin power is set relatively lower during nighttime hours, including night, than during other time periods. This makes it possible to sell surplus power during the day, for example, and to focus on charging during the nighttime hours when electricity rates are cheaper.

Next, when the control device 11 does not have the function of calculating the maximum supply power, and the electric vehicle power supply device 21 has the function of calculating the maximum supply power, the supply power control unit 115 transmits, for example, target space power generation information used to calculate the maximum supply power to the electric vehicle power supply device 21. On the other hand, in the electric vehicle power supply device 21, as in the first embodiment, part of the function of the supply power control unit 115 described above may be provided as a functional unit (supply power control unit 213), and the maximum supply power may be set in the same way as the supply power control unit 115, based on the target space power generation information received from the control device 11.

<Modification of the second embodiment>
Fig. 11 is a diagram showing a modification of the present embodiment 2. Regarding the electric vehicle power supply control system 1 of this modification, only the parts different from the electric vehicle power supply control system 1 of the present embodiment 2 will be described. In this modification shown in Fig. 11, the breaker EVB for the electric vehicle power supply device 21 provided in the distribution board DB in the present embodiment 2 is connected to an electric power meter EM.

That is, one end of the sixth wiring W6 is connected to the power meter EM so that power can be passed through it, and the other end is connected to the power receiving section of the breaker EVB for the electric vehicle power supply device 21.

The seventh wiring W7 is connected at one end to the power supply section of the breaker EVB for the electric vehicle power supply device 21 so that electric power can be passed, and at the other end to the power source power receiving section 211 of the electric vehicle power supply device 21.

This configuration makes it possible to install a breaker EVB by only working on the power meter EM outside the target space, without having to install a separate breaker EVB on the distribution board DB inside the target space.

<Third embodiment>
The electric vehicle power supply control system 1 of the third embodiment can be said to have a configuration that combines the electric vehicle power supply control system 1 of the first embodiment and the electric vehicle power supply control system 1 of the second embodiment. Only the parts that differ from the electric vehicle power supply control systems 1 of the first and second embodiments will be described.

Figure 12 is a diagram showing an example of an electric vehicle power supply control system 1 including a power generation device 51 according to the third embodiment. The electric vehicle power supply control system 1 of the third embodiment differs from the electric vehicle power supply control system 1 of the first embodiment in that it has a first current sensor CS1 like the electric vehicle power supply control system 1 of the first embodiment, and has a second current sensor CS2 like the electric vehicle power supply control system 1 of the second embodiment. The configuration of the distribution board DB may be the same as in the second embodiment. Also, as in the first embodiment, the control device 11 may be provided inside the distribution board.

Figure 13 is a diagram showing an example of an electric vehicle power supply control system 1 according to the third embodiment. The electric vehicle power supply control system 1 of the third embodiment differs from the electric vehicle power supply control systems 1 of the first and second embodiments in that the control device 11 has the target space power measurement unit 113 of the first embodiment, and also has a generated power measurement unit 116 that measures the target space generated power of the power generation device 51.

As described above, in the third embodiment, the target space power measurement unit 113 and the generated power measurement unit 116 are provided, so that the supply power control unit 115 in the third embodiment can perform control that takes into account both the target space power consumption and the target space generated power in addition to or instead of the processing of the supply power control unit 115 in the first and second embodiments.

Here, similarly to the first and second embodiments, the information transmitted by the power supply control unit 115 may differ depending on whether the control unit 11 has a function for calculating the maximum supply power. That is, first, if the control unit 11 has a function for calculating the maximum supply power, the power supply control unit 115 generates maximum supply power information indicating the maximum supply power, which is the power that can be supplied by the electric vehicle power supply device 21, based on, for example, the above-mentioned target space power consumption and target space power generation power.

More specifically, in the configuration of the second embodiment, it is assumed that the target space power generation is not necessarily large, and there is no effect even if all of the target space power generation is set as the maximum supply power, or even if not, it is assumed that the total of the power supply by the electric vehicle power supply device 21 (in this case, the target space power generation power) and the target space power consumption exceeds the allowable power due to the margin power or coefficient. However, the supply power control unit 115 may, for example, compare the power difference, which is the difference between the allowable power and the target space power consumption, with the target space power generation power, and if the target space power generation power is smaller than the power difference, set the target space power generation power as the maximum supply power. And, for example, if the target space power generation power is larger than the power difference, the supply power control unit 115 may set the power difference as the maximum supply power. By setting the maximum supply power in this way, it is possible to operate without the total of the power supply by the electric vehicle power supply device 21 (in this case, the target space power generation power) and the target space power consumption exceeding the allowable power.

In addition, in this third embodiment, the above-mentioned margin power and coefficients may also be used when setting the maximum supply power.

Furthermore, as in the first and second embodiments, the above-mentioned coefficients and margin power may be arbitrarily set by the user (the user or the installer, etc.).

Next, when the control device 11 does not have a function for calculating the maximum supply power and the electric vehicle power supply device 21 has a function for calculating the maximum supply power, the supply power control unit 115 transmits, for example, the target space power consumption information and the target space generated power information used to calculate the maximum supply power to the electric vehicle power supply device 21. On the other hand, in the electric vehicle power supply device 21, as in the first and second embodiments, part of the function of the supply power control unit 115 described above may be provided as a functional unit (supply power control unit 213), and the maximum supply power may be set in the same manner as the supply power control unit 115 based on the target space power consumption information and the target space generated power information received from the control device 11. In this case, the allowable power storage unit 112 and the power difference setting unit 114 may be provided in the electric vehicle power supply device 21, and the allowable power information and the power difference information may be transmitted to the electric vehicle power supply device 21.

<Modification of the Third Embodiment>
Fig. 14 is a diagram showing a modification of the present embodiment 3. Regarding the electric vehicle power supply control system 1 of this modification, only the parts different from the electric vehicle power supply control system 1 of the present embodiment 3 will be described. In this modification shown in Fig. 14, the breaker EVB for the electric vehicle power supply device 21 provided in the distribution board DB in the present embodiment 3 is connected to an electric power meter EM.

That is, one end of the sixth wiring W6 is connected to the power meter EM so that power can be passed through it, and the other end is connected to the power receiving section of the breaker EVB for the electric vehicle power supply device 21.

The seventh wiring W7 is connected at one end to the power supply section of the breaker EVB for the electric vehicle power supply device 21 so that electric power can be passed, and at the other end to the power source power receiving section 211 of the electric vehicle power supply device 21.

This configuration makes it possible to install a breaker EVB by only working on the power meter EM outside the target space, without having to install a separate breaker EVB on the distribution board DB inside the target space.

In particular, when the first current sensor CS1 or the first voltage sensor CV1 is provided on the second wiring W2 or the third wiring W3 (not shown), unlike in the third embodiment, the power consumption of the electric vehicle power supply device 21 is not included in the target space power consumption, and the control device 11 cannot detect the power consumption of the electric vehicle power supply device 21. Therefore, the supply power control unit 115 may acquire power consumption information of the electric vehicle power supply device 21 via, for example, the fourth communication cable CC4, and further set the power obtained by subtracting the power consumption of the electric vehicle power supply device 21 from the power indicated by the power difference as the power difference information to be used by the supply power control unit 115. This may also be processed in the supply power control unit 213 when setting the maximum supply power in the electric vehicle power supply device 21. That is, the electric vehicle power supply device 21 receives the target space power consumption information via the fourth communication cable CC4, and acquires the power consumption information of the electric vehicle power supply device 21 within the electric vehicle power supply device 21, so that the supply power control unit 213 can process both pieces of power consumption information in the same way.

<Other Modification 1>
In the first to third embodiments, examples have been shown in which the control device 11 and at least one of the first current sensor CS1, the first voltage sensor CV1, the second current sensor CS2, the second voltage sensor CV2, and the electric vehicle power supply device 21, or the electric vehicle power supply device 21 and the electric vehicle side power storage system 41, or the power meter EM, and the control device 11 or the electric vehicle power supply device 21, etc., transmit and receive various information to each other via wiring or communication cables. However, instead of or in addition to this, a wireless communication unit (not shown) may be provided to transmit and receive various information via a network.

The network performs communication according to communication rules such as TCP/IP (Transmission Control Protocol/Internet Protocol). The network NW may also be a virtual line. The virtual line may be, for example, a VPN (Virtual Private Network), an Internet VPN (Virtual Private Network), an entry VPN (Virtual Private Network), an IP (Internet Protocol)-VPN (Virtual Private Network), a wide area Ethernet, etc.

When transmitting and receiving various information via a network, the information may first be transmitted to a server via the network, and then transmitted from the server via the network.

The network may also be a wireless network. The wireless network WNW referred to here may be a short-range communication interface such as Bluetooth (registered trademark), BLE (Bluetooth Low Energy), or Wi-Fi. Various pieces of information may be directly transmitted and received between the control device 11 and the first current sensor CS1 described above via the wireless network.

<Other Modification 2>
In the first to third embodiments, the control device 11, the first current sensor CS1, the first voltage sensor CV1, and the like are provided for the distribution board DB, but instead of or in addition to this, the power meter EM may have at least some of the functions of the control device 11 and the various sensors. That is, when the power meter EM is a so-called smart meter, the power meter EM itself may acquire the target space power consumption information. In this case, for example, (1) instead of the various sensors, the power meter EM may be capable of transmitting the target space power consumption information to the control device 11, (2) instead of the control device 11 and the various sensors, the power meter EM may be capable of transmitting the target space power consumption information directly to the electric vehicle power supply device 21 (in this case, the maximum supply power is set by the electric vehicle power supply device 21), or (3) instead of the control device 11 and the various sensors, the power meter EM may be capable of setting the maximum supply power from the target space power consumption information and transmitting the maximum supply power information to the electric vehicle power supply device 21. Furthermore, in the case where the power generation device 51 is provided, the power generation information for the target space may be obtained by the power meter EM, and the maximum supply power may be set as in the third embodiment.

<Other Modification 3>
It is not precluded from having devices not explicitly stated in the first to third embodiments, and for example, a lightning arrester (SPD) may be provided for the electric vehicle power supply device 21. Alternatively, in the second or third embodiment, a functional distribution board (for example, a device for switching the connection of the distribution board to the power generation device 51 or the power storage device (not shown) when a power outage occurs) may be provided between the DC/AC converter 61 and the distribution board DB.

The above-described embodiment is merely an example to facilitate understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified and improved without departing from the spirit of the invention, and it goes without saying that the present invention includes equivalents.

REFERENCE SIGNS LIST 1 Electric vehicle power supply control system 11 Control device 111 Source power receiving unit 112 Allowable power storage unit 113 Target space power measurement unit 114 Power difference measurement unit 115 Supply power control unit 116 Generated power measurement unit 119 Information processing unit 21 Electric vehicle power supply device 211 Source power receiving unit 212 Electric vehicle power supply unit 213 Supply power control unit 219 Information processing unit 31 Load in target space 31G Load group in target space 41 Power storage system 411 Supply power receiving unit 412 Storage battery 413 Instruction information generation unit 419 Information processing unit 51 Power generation device 61 DC/AC converter EV Electric vehicle DB Distribution board MB Main breaker ELB Earth leakage circuit breaker BB Branch breaker BBG Branch breaker group VR Variable resistor CS1 First current sensor CS2 Second current sensor VS1 First voltage sensor VS2 Second voltage sensor HU House R Roof E Commercial power line EP Utility pole W1 First wire W2 Second wire W3 Third wire W4 Fourth wire W4G Fourth wire group SP Branch point SW Branch wire SWG Branch wire group W5 Fifth wire W6 Sixth wire W7 Seventh wire W8 Eighth wire W9 Ninth wire W10 Tenth wire EL Electric wire +EL +100V electric wire 0EL 0V electric wire -EL -100V electric wire CC1 First communication cable CC2 Second communication cable CC3 Third communication cable CC4 Fourth communication cable

Claims (7)

An electric vehicle power supply control system including a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
a target space power measuring unit that measures a target space power consumption supplied to a target space load that is a load that consumes power in the target space;
a supply power control unit that transmits, as the transmission information, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient that is equal to or greater than 0 and equal to or less than 1, to the electric vehicle power supply device; and
Equipped with
an electric vehicle power supply control system , wherein the coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller; An electric vehicle power supply control system including a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device includes:
a target space power measuring unit that measures a target space power consumption supplied to a target space load that is a load that consumes power in the target space;
a power generation measuring unit for measuring the power generation in the target space generated by a power generation device provided in the target space;
a supply power control unit that transmits, as the transmission information, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient that is equal to or greater than 0 and equal to or less than 1, to the electric vehicle power supply device; and
Equipped with
The allowable power is a power indicated by a breaker capacity in the target space or a power that is a predetermined value lower than the breaker capacity,
an electric vehicle power supply control system , wherein the coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller; Further, a common breaker is provided for wiring that supplies power to the electric vehicle power supply device and wiring that supplies power to the control device.
3. The electric vehicle power supply control system according to claim 1 or 2. A program for controlling a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device
A step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space;
transmitting, as the transmission information to the electric vehicle power supply device, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient that is equal to or greater than 0 and equal to or less than 1;
Run the command,
The coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller . A program for controlling a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle,
The control device
A step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space;
A step of measuring the power generated in the target space by a power generation device provided in the target space;
transmitting, as the transmission information to the electric vehicle power supply device, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient of 0 or more and 1 or less;
Run the command,
The allowable power is a power indicated by a breaker capacity in the target space or a power that is a predetermined value lower than the breaker capacity,
The coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller . A control method by a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle, comprising:
The control device
A step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space;
transmitting, as the transmission information to the electric vehicle power supply device, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient that is equal to or greater than 0 and equal to or less than 1;
Run
A method according to claim 1, wherein the coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller . A control method by a control device that transmits transmission information for setting a maximum supply power in an electric vehicle power supply device that supplies power to an electric vehicle, comprising:
The control device
A step of measuring a target space power consumption supplied to a load in the target space that is a load that consumes power in the target space;
A step of measuring the power generated in the target space by a power generation device provided in the target space;
transmitting, as the transmission information to the electric vehicle power supply device, calculated power information indicating a calculated power obtained by multiplying a power difference obtained by subtracting the target space power consumption from an allowable power that is an upper limit of power that can be consumed in the target space by a coefficient of 0 or more and 1 or less;
Run
The allowable power is a power indicated by a breaker capacity in the target space or a power that is a predetermined value lower than the breaker capacity,
A method according to claim 1, wherein the coefficient is set to be smaller as a power value of a power difference with respect to a power value of the allowable power becomes smaller .

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