Charging system, transmitting device and notification device

Abstract

To provide a charging system which prompts a user to charge an in-vehicle charging device in a time zone in which natural energy-derived power is in abundant supply, a charging facility, a transmission apparatus, and a notification apparatus.SOLUTION: A charging system 10 for charging a battery 32 mounted on a vehicle 30 configured as an electric vehicle which uses supply power supplied from a power system notifies a user of a specific time zone, as at least one of the following three time zones: a first time zone in which there is a surplus of natural energy-derived power generated by using natural energy out of the supply power as a power source, with respect to the demand power of the power system; a second time zone in which a ratio of the natural energy-derived power with respect to the demand power is equal to or higher than a predetermined ratio; and a third time zone in which CO2 emission in the process of generating the supply power is less than a predetermined amount.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a charging system, a charging facility, a transmitting device, and a notification device. [Background technology]

[0002] Conventionally, one charging system proposed for this type is one that charges a storage battery with electricity derived from natural energy generated using natural energy, and then charges an on-board power storage device mounted on an electric vehicle using the electricity from the storage battery (see, for example, Patent Document 1). This system encourages users to use electricity derived from natural energy by displaying to the user the remaining power amount in the storage battery and the power amount of the electric vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-195369 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned charging system, renewable energy-derived power is temporarily stored in a storage battery and then used to charge an on-board power storage device, resulting in power loss when the storage battery is charged and discharged. To reduce this power loss, a charging system has been proposed that charges an on-board power storage device without temporarily storing renewable energy-derived power in a storage battery. In this charging system, it is recognized that an important issue is to encourage users to charge the on-board power storage device during times when renewable energy-derived power is abundant in order to reduce carbon dioxide emissions.

[0005] The main purpose of the charging system of the present invention is to encourage a user to charge an in-vehicle power storage device during a time period when there is an abundance of electricity derived from natural energy. [Means for solving the problem]

[0006] The charging system of the present invention employs the following means to achieve the above-mentioned main object.

[0007] The charging system of the present invention comprises: A charging system that charges an on-board power storage device mounted on an electric vehicle using power supplied from a power grid, notifying the user of at least one of the specific time periods: a first time period in which renewable energy-derived electricity generated using renewable energy as a power source among the supplied electricity is in surplus with respect to the demand for electricity in the power grid; a second time period in which the ratio of the renewable energy-derived electricity to the demand for electricity is equal to or greater than a predetermined ratio; and a third time period in which carbon dioxide emissions in the process of generating the supplied electricity are less than a predetermined amount; The gist of this is as follows.

[0008] The charging system of the present invention notifies the user of at least one of the following specific time periods: a first time period during which renewable energy-derived power generated using renewable energy as a power source is in surplus with respect to the power demand of the power grid; a second time period during which the ratio of renewable energy-derived power to power demand is equal to or greater than a predetermined ratio; and a third time period during which carbon dioxide emissions in the process of generating the power supply are less than a predetermined amount. Since the first to third time periods are considered to be times when renewable energy-derived power is abundant, notifying the user of the specific time period encourages the user to charge the on-board power storage device during times when renewable energy-derived power is abundant. Here, "renewable energy" refers to energy derived from natural phenomena other than fossil fuels, and examples of such power sources include sunlight, heat, wind, tidal, and geothermal. The "predetermined ratio" is a threshold value used to determine whether renewable energy-derived power is abundant. The "predetermined amount" is a threshold value used to determine whether carbon dioxide emissions are low due to the abundance of renewable energy-derived power.

[0009] The charging system of the present invention may include a charging facility that charges the on-board power storage device using the supplied power, a transmitting device that transmits the specific time period, and a notification device that receives the specific time period transmitted from the transmitting device and notifies the user. In this way, in a charging system that includes the charging facility, the transmitting device, and the notification device, it is possible to encourage the user to charge the on-board power storage device during a time period when there is an abundance of electricity derived from renewable energy.

[0010] In this case, a control device may be provided that controls at least one of the electric vehicle and the charging facility so that charging of the on-board power storage device by the charging facility is prohibited during a non-specific time period that is different from the specific time period. In this way, charging of the on-board power storage device by the charging facility can be suppressed during time periods when electricity derived from natural energy is not abundant.

[0011] Furthermore, in the charging system of the present invention, the user may be notified of the specific time period, a non-specific time period that is different from the specific time period, a first rate that is the electricity rate for the specific time period, and a second rate that is the electricity rate for the non-specific time period. Since the specific time period is a time period when electricity from renewable energy is abundant and the non-specific time period is a time period when electricity from renewable energy is not abundant, notifying the user of the specific time period, the non-specific time, the first rate that is the electricity rate for the specific time period, and the second rate that is the electricity rate for the non-specific time period can make the user more aware of the specific time period and the non-specific time period and can encourage the user to charge the on-board power storage device during a time period when electricity from renewable energy is abundant.

[0012] In this case, the charging system may include a charging facility that charges the on-board power storage device using the supplied power, a transmitting device that transmits the specific time period, the non-specific time period, and the first and second fees, and a notification device that receives the specific time period, the non-specific time period, and the first and second fees transmitted from the transmitting device and notifies the user. In this way, in a charging system that includes the charging facility, the transmitting device, and the notification device, the user can be more strongly made aware of the specific time period and the non-specific time period, and can be encouraged to charge the on-board power storage device during times when there is an abundance of electricity from renewable energy.

[0013] In this case, the first fee may be set to be lower than the second fee. This can more strongly encourage users to charge their on-board power storage devices during times when renewable energy-derived electricity is abundant. Furthermore, in this case, the first fee may be set to a basic fee regardless of the amount of electricity supplied, and the second fee may be set to the sum of the basic fee and an additional fee based on the supplied electricity.

[0014] The charging equipment of the present invention is used in the charging system of the above aspect, i.e., a charging system that charges an on-board power storage device mounted on an electric vehicle using supply power supplied from a power grid, and notifies a user of at least one specific time period out of a first time period in which renewable energy-derived power generated using renewable energy as a power source among the supply power is in surplus to the power demand of the power grid, a second time period in which the ratio of the renewable energy-derived power to the power demand is equal to or greater than a predetermined ratio, and a third time period in which carbon dioxide emissions in the process of generating the supply power are less than a predetermined amount, and the charging system charges the on-board power storage device using the supply power. The gist of this is as follows.

[0015] When used in the charging system of the above-described aspect, the charging equipment of the present invention achieves an effect equivalent to that of the charging system of the above-described aspect, namely, the effect of encouraging users to charge their on-board storage devices during times when there is an abundance of electricity derived from natural energy.

[0016] The transmitter of the present invention is used in the charging system of the above aspect, i.e., a charging system that charges an on-board power storage device mounted on an electric vehicle using supply power supplied from a power grid, and notifies a user of at least one of a first time slot in which renewable energy-derived power generated using renewable energy as a power source among the supply power is in surplus with respect to the power demand of the power grid, a second time slot in which the ratio of the renewable energy-derived power to the power demand is equal to or greater than a predetermined ratio, and a third time slot in which carbon dioxide emissions in the process of generating the supply power are less than a predetermined amount, and transmits the specific time slot. The gist of this is as follows.

[0017] When used in the charging system of the above-described aspect, this transmitting device of the present invention achieves an effect equivalent to that of the charging system of the above-described aspect, namely, the effect of encouraging the user to charge the on-board storage device during times when there is an abundance of electricity derived from natural energy.

[0018] The notification device of the present invention is used in the charging system of the above aspect, i.e., a charging system that charges an on-board power storage device mounted on an electric vehicle using supply power supplied from a power grid, and notifies a user of at least one of a first time period in which renewable energy-derived electricity generated using renewable energy as a power source among the supply power is in surplus to the power demand of the power grid, a second time period in which the ratio of renewable energy-derived electricity to the power demand is equal to or greater than a predetermined ratio, and a third time period in which carbon dioxide emissions in the process of generating the supply power are less than a predetermined amount, and notifies the user of the specific time period. The gist of this is as follows.

[0019] When used in the charging system of the above-described aspect, this notification device of the present invention achieves an effect equivalent to that of the charging system of the above-described aspect, namely, the effect of encouraging the user to charge the on-board storage device during times when there is an abundance of electricity derived from natural energy. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a block diagram of a charging system 10 according to an embodiment of the present invention. [Figure 2] 4 is a flowchart showing an example of a charging permission time period setting routine executed by a vehicle ECU 34. [Figure 3] 10 is a flowchart showing an example of a specific time period setting routine executed by the grid management server 18. [Figure 4] 10 is a flowchart showing an example of a modified charging permission time period setting routine executed by a vehicle ECU 34. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, a mode for carrying out the present invention will be described using examples. [Example]

[0022] 1 is a block diagram of a charging system 10 according to one embodiment of the present invention. As shown in the figure, the charging system 10 according to the embodiment is configured as a system for charging a power storage device (on-board power storage device) 34 mounted on a vehicle 30, and includes a power grid 12, a grid management server 18, a charging stand 20, a station management server 28, a display 33, a vehicle electronic control unit (hereinafter referred to as "vehicle ECU") 34, a vehicle management server 38, and a user's mobile terminal 40.

[0023] The power grid 12 is a power grid that includes power plants, offices, factories, homes, etc. The power grid management server 18 is a server used by, for example, a power company to manage the power grid 12. The power grid management server 18 includes a CPU, ROM, RAM, flash memory, a storage device (such as an SSD or hard disk), input / output ports, and communication ports. The power grid management server 18 is capable of wireless communication with the station management server 28 and the vehicle management server 38. The power grid management server 18 stores, in a storage device, information on the power supply and demand situation in the power grid 12 and the power source of the power supplied to the power grid 12 for each time period (such as the proportion of non-renewable energy-derived power generated using fossil fuels and renewable energy-derived power generated using renewable energy, relative to the supplied power). Here, "renewable energy" refers to energy derived from natural phenomena other than fossil fuels. Examples of renewable energy sources include solar, thermal, wind, tidal, and geothermal energy.

[0024] The charging stand 20 is connected to the power system 12 and includes a power adjustment unit 22 and a stand electronic control unit (hereinafter referred to as a "stand ECU (Electronic Control Unit)") 24 that controls the power adjustment unit 22. The power adjustment unit 22 is connected to a vehicle-side connector of the vehicle 30 and a stand-side connector of the charging stand 20, and is capable of adjusting the power when supplying power from the power system 12 to a battery 32 of the vehicle 30 via the charging stand 20 to charge the battery 32. The stand ECU 24 includes a CPU, ROM, RAM, flash memory, input / output ports, communication ports, etc. The stand ECU 24 is capable of wireless communication with a stand management server 28 and is also capable of wired or wireless communication with a vehicle electronic control unit (hereinafter referred to as a "vehicle ECU (Electronic Control Unit)") 34 of the vehicle 30.

[0025] The station management server 28 is a server used by the owner of the charging station 20 (for example, a management company of the charging station 20) to manage the charging station 20. The station management server 28 includes a CPU, ROM, RAM, flash memory, a storage device (such as an SSD or a hard disk), input / output ports, and communication ports. The station management server 28 is capable of wireless communication with the grid management server 18, the station ECU 24 of the charging station 20, and the vehicle management server 38.

[0026] The vehicle 30 is configured as an electric vehicle and includes a driving motor, a battery 32 that exchanges power with the motor, a display 33 configured as a touch panel that displays various information inside the vehicle cabin, and a vehicle ECU 34 that drives the motor, manages the battery 32, and controls the display 33. The vehicle ECU 34 includes a CPU, ROM, RAM, flash memory, input / output ports, communication ports, etc. The vehicle ECU 34 is capable of wireless communication with a vehicle management server 38 and is also capable of wired or wireless communication with the stand ECU 24 of the charging stand 20. The vehicle 30 is capable of performing the above-mentioned battery charging when the vehicle-side connector of the vehicle 30 and the stand-side connector of the charging stand 20 are connected.

[0027] The vehicle 30 is not limited to an electric vehicle, but may be configured as a hybrid vehicle equipped with an engine in addition to a motor, a battery 32, a display 33, and a vehicle ECU .

[0028] The vehicle management server 38 is a server used by the user of the vehicle 30 to manage the vehicle 30. The vehicle management server 38 includes a CPU, ROM, RAM, flash memory, a storage device (such as an SSD or hard disk), an input / output port, and a communication port. The vehicle management server 38 is capable of wireless communication with the grid management server 18, the station management server 28, the vehicle ECU 34 of the vehicle 30, and the mobile terminal 40.

[0029] The mobile terminal 40 is configured as a smartphone, a tablet terminal, etc. The mobile terminal 40 is capable of wirelessly communicating with the vehicle management server 38.

[0030] Next, the operation of the charging system 10 of the embodiment configured as described above will be described, in particular the operation when permitting or prohibiting battery charging in the vehicle 30. Figure 2 is a flowchart showing an example of a charging permission time period setting routine executed by the vehicle ECU 34. This routine is executed once a day when the vehicle 30 is started up.

[0031] When the charging permission time period setting routine is executed, the CPU of the vehicle ECU 34 executes a process of inputting a specific time period (step S100). The specific time period is set in the grid management server 18 and input via the vehicle management server 38. Here, the description of the charging permission time period setting routine will be interrupted and the setting of the specific time period in the grid management server 18 will be described.

[0032] 3 is a flowchart showing an example of a specific time period setting routine executed by the grid management server 18. The specific time period setting routine is executed by the CPU of the grid management server 18 once a day.

[0033] When the specific time period setting routine is executed, the CPU of the grid management server 18 compares, for each time period, the renewable energy-derived power in the power grid 12 with the power demand of the power grid 12. The CPU sets a time period (first time period) in which the renewable energy-derived power is in excess of the power demand as the specific time period (step S200). The set specific time period is then transmitted to the vehicle management server 38 (step S210), and the specific time period setting routine ends. The renewable energy-derived power and the power demand of the power grid 12 for each time period are estimated based on data from a predetermined past period (e.g., one week to one month). For example, the estimated data may be estimated as an average value over a past required period, or may further take into account temperature, weather, wind, and the like. The specific time period is, for example, a time period during which solar power generation is high on a clear day, or a time period during which wind power generation is high, and is a time period in which renewable energy-derived power is abundant. The setting of the specific time period by the grid management server 18 has been described above.

[0034] Returning to the explanation of the charging permission time period setting routine in Figure 2, when the CPU of the vehicle ECU 34 inputs the specific time period, the CPU displays the input specific time period as a recommended charging time period on the display 33 (S110). By displaying the recommended charging time period on the display 33 in this manner, the user can be encouraged to connect the vehicle-side connector of the vehicle 30 to the stand-side connector of the charging stand 20 and charge the battery 32 during the recommended charging time period, i.e., during the specific time period when renewable energy-derived electricity is abundant.

[0035] Next, it is determined whether the user wishes to reflect the recommended time slot in the permitted charging time slot (step S120). In step S120, the message "Do you want to permit charging during the recommended charging time slot and prohibit charging during other time slots?" is displayed on the display 33 with the words "Yes" and "No." If contact with "Yes" is detected, it is determined that the user wishes to reflect the recommended time slot in the permitted charging time slot, and if contact with "No," it is determined that the user does not wish to reflect the recommended time slot in the permitted charging time slot.

[0036] If it is determined in step S120 that the user does not wish to reflect the recommended time slot in the permitted charging time slot, the vehicle ECU 34 ends the permitted charging time slot setting routine. In this case, the vehicle ECU 34 performs battery charging when the vehicle-side connector of the vehicle 30 and the station-side connector of the charging station 20 are connected.

[0037] If it is determined in step S120 that the user wishes to reflect the recommended time period in the permitted charging time period, the specific time period is set as the permitted charging time period (step S130), and the permitted charging time period setting routine ends. Once the permitted charging time period is set, the vehicle ECU 34 permits and executes the above-described battery charging when the connection between the vehicle connector of the vehicle 30 and the stand connector of the charging stand 20 falls within the permitted charging time period, i.e., when the connection falls within the specific time period. However, when the connection between the vehicle connector of the vehicle 30 and the stand connector of the charging stand 20 does not fall within the permitted charging time period, i.e., when the connection falls within a non-specific time period different from the specific time period, the vehicle ECU 34 prohibits and does not execute the above-described battery charging. This prevents battery charging from being executed during a non-specific time period, i.e., a time period when renewable energy-derived power is not abundant, and thus reduces the increase in carbon dioxide emissions from the time of power generation in the power grid 12 to the time of battery charging. Even if the time when the vehicle-side connector of the vehicle 30 and the stand-side connector of the charging stand 20 are connected is not within the permitted charging time period, if the connection between the vehicle-side connector and the stand-side connector is maintained thereafter and the permitted charging time period arrives, battery charging is permitted and executed.

[0038] According to the charging system 10 of the embodiment described above, by notifying the user of a specific time period as a first time period in which the amount of renewable energy-derived electricity generated using renewable energy as a power source among the supplied electricity is in surplus to the demand for electricity in the power grid 12, the user can be encouraged to charge the battery 32 during a time period in which there is an abundance of renewable energy-derived electricity.

[0039] Furthermore, the charging stand 20 charges the battery 32 using the supplied power, the grid management server 18 transmits the specific time period, and the vehicle management server 38, the vehicle ECU 34, and the display 33 receive the specific time period transmitted from the grid management server 18 and notify the user. Therefore, in a charging system comprising the charging stand 20, the grid management server 18, the vehicle management server 38, the vehicle ECU 34, and the display 33, the user can be encouraged to charge the battery 32 during times when there is an abundance of electricity derived from natural energy.

[0040] Furthermore, since battery charging is prohibited during non-specific time periods, it is possible to prevent battery charging from being performed during time periods when electricity derived from natural energy sources is not abundant.

[0041] In the charging system 10 of the embodiment, step S200 of the specific time period setting routine illustrated in FIG. 3 sets the specific time period to a time period (first time period) in which renewable energy-derived electricity is in surplus with respect to power demand. However, when the ratio of renewable energy-derived electricity to power demand is equal to or greater than a predetermined ratio, it can be determined that renewable energy-derived electricity is abundant. When renewable energy-derived electricity is abundant, the amount of carbon dioxide emitted in the process of generating the supplied power is less than a predetermined amount. Therefore, instead of the first time period, a time period (second time period) in which the ratio of renewable energy-derived electricity to power demand is equal to or greater than a predetermined ratio, or a time period (third time period) in which the amount of carbon dioxide emitted in the process of generating the supplied power is less than a predetermined amount, may be set as the specific time period. Also, more than one of the first to third time periods may be set as the specific time period. Here, the "predetermined ratio" is a threshold value for determining whether renewable energy-derived electricity is abundant. The "predetermined amount" is a threshold value for determining whether carbon dioxide emissions are low due to an abundance of renewable energy-derived electricity.

[0042] In the charging system 10 of the embodiment, in steps S120 and S130 of the charging permission time slot setting routine illustrated in Fig. 2, it is determined whether the user wishes to reflect the recommended charging time slot in the charging permission time slot, and a specific time slot is set as the charging permission time slot. However, steps S120 and S130 do not have to be executed.

[0043] In the charging system 10 of the embodiment, step S200 of the specific time period setting routine illustrated in FIG. 3 transmits a specific time period as a time period in which renewable energy-derived electricity is in excess of the power demand. However, instead of the specific time period setting routine illustrated in FIG. 3, an electricity rate system may be set that includes a specific time period, a non-specific time period different from the specific time period, a first rate that is the electricity rate for the specific time period, and a second rate that is the electricity rate for the non-specific time period, and the set electricity rate system may be transmitted to the vehicle management server 38. In the electricity rate system, the first rate is set to be cheaper than the second rate. For example, the first rate may be set to a basic rate that is independent of the amount of power supplied, and the second rate may be set to the sum of the basic rate and an additional rate. The additional rate may be a flat rate or a variable rate based on the amount of power supplied.

[0044] In this case, the CPU of the vehicle ECU 34 may execute a charging permission time zone setting routine illustrated in Fig. 4 instead of the charging permission time zone setting routine illustrated in Fig. 2. In the charging permission time zone setting routine of Fig. 4, the CPU of the vehicle ECU 34 executes a process of inputting an electricity rate system (step S300) and displays the input electricity rate system, i.e., a specific time zone, a non-specific time zone different from the specific time zone, a first rate which is the electricity rate for the specific time zone, and a second rate which is the electricity rate for the non-specific time zone, on the display 33 (step S310). The specific time zone is a time zone when electricity from renewable energy is abundant, and the non-specific time zone is a time zone when electricity from renewable energy is not abundant. Therefore, by notifying the user of the specific time zone, the non-specific time, the first rate which is the electricity rate for the specific time zone, and the second rate which is the electricity rate for the non-specific time zone, the user can be made more aware of the specific time zone and the non-specific time zone and can be encouraged to charge the on-board power storage device during a time zone when electricity from renewable energy is abundant.

[0045] After the electricity rate is displayed on the display 33 in this way, it is determined whether the user wishes to reflect the electricity rate system in the permitted charging time slots (step S320). In step S320, the message "Do you want to permit charging when the electricity rate is the basic rate and prohibit charging at other times?" is displayed on the display 33 along with the words "Yes" and "No." If contact with "Yes" is detected, it is determined that the user wishes to reflect the electricity rate system in the permitted charging time slots, and if contact with "No," it is determined that the user does not wish to reflect the recommended time slots in the permitted charging time slots.

[0046] If it is determined in step S320 that the user does not want the electricity rate system to be reflected in the charging permission time slot, the charging permission time slot setting routine ends. In this case, the vehicle ECU 34 performs battery charging when the vehicle-side connector of the vehicle 30 and the station-side connector of the charging station 20 are connected.

[0047] If it is determined in step S320 that the user desires to reflect the electricity rate system in the permitted charging time slot, the specific time slot is set as the permitted charging time slot (step S330), and the permitted charging time slot setting routine ends. Once the permitted charging time slot is set, the vehicle ECU 34 permits and executes the above-described battery charging when the connection between the vehicle connector of the vehicle 30 and the stand connector of the charging stand 20 falls within the permitted charging time slot, i.e., when the connection falls within the specific time slot. However, when the connection between the vehicle connector of the vehicle 30 and the stand connector of the charging stand 20 does not fall within the permitted charging time slot, i.e., when the connection falls within the non-specific time slot, the vehicle ECU 34 prohibits and does not execute the above-described battery charging. This prevents battery charging from being executed during the non-specific time slot, i.e., when renewable energy-derived electricity is not abundant, thereby suppressing an increase in carbon dioxide emissions.

[0048] In this case, in steps S320 and S330, it is determined whether the user wants the electricity rate system to be reflected in the charging permission time slot, and the specific time slot is set as the charging permission time slot. However, steps S320 and S330 do not have to be executed.

[0049] In the charging system 10 of the embodiment and the modified example, the permitted charging time period setting routine illustrated in Fig. 2 and Fig. 4 is executed by the vehicle ECU 34. However, the permitted charging time period setting routine illustrated in Fig. 2 and Fig. 4 may also be executed by the mobile terminal 40. In this case, the vehicle 30 receives the set permitted charging time period via the vehicle management server 38 in steps S130 and S330, and the vehicle 30 performs battery charging based on the permitted charging time period received.

[0050] In the charging system 10 of the embodiment and the modified example, when a specific time period is set as the permitted charging time period in steps S130 and S330 of the permitted charging time period setting routine illustrated in Figures 2 and 4, the vehicle ECU 34 permits the above-mentioned battery charging if the time when the vehicle-side connector of the vehicle 30 and the stand-side connector of the charging stand 20 are connected falls within the permitted charging time period, and prohibits the above-mentioned battery charging if the time when the vehicle-side connector of the vehicle 30 and the stand-side connector of the charging stand 20 are connected does not fall within the permitted charging time period, i.e., falls within a non-specific time period different from the specific time period. However, when a specific time period is set as the permitted charging time period in steps S130 and S330, the permitted charging time period may be transmitted to the stand ECU 24, and the stand ECU 24 may control the power adjustment unit 22 to permit the supply of power from the charging stand 20 to the vehicle 30 to charge the battery, or may control the power adjustment unit 22 to prohibit the supply of power from the charging stand 20 to the vehicle 30 to prevent battery charging.

[0051] The charging system 10 of the embodiment and the modified example includes a grid management server 18, a charging stand 20, a station management server 28, a display 33, a vehicle ECU 34, and a vehicle management server 38. However, at least two of these may be configured as an integrated unit. For example, the grid management server 18, the charging stand 20, and the station management server 28 may be configured as an integrated unit, and the display 33, the vehicle ECU 34, and the vehicle management server 38 may be configured as an integrated unit.

[0052] In the charging system 10 of the embodiment and the modified example, the vehicle 30 includes a battery 32 as a power storage device. However, the vehicle 30 may include a capacitor instead of the battery 32.

[0053] In the embodiment, the present invention has been described in the form of the charging system 10. However, the present invention may also be in the form of a charging facility used in the charging system that charges the battery 32 using supplied power, a transmitting device used in the charging system that transmits information about a specific time period, or a notification device used in the charging system that notifies a user of a specific time period.

[0054] The correspondence between the main elements of the embodiment and the main elements of the invention described in the "Means for Solving the Problem" section will be explained below. In the embodiment, the charging stand 20, the grid management server 18, the vehicle management server 38, the vehicle ECU 34, and the display 33 correspond to a "charging system." The charging stand 20 corresponds to a "charging facility." The grid management server 18 corresponds to a "transmitting device." The display 33, the vehicle ECU 34, and the vehicle management server 38 correspond to a "notifying device."

[0055] The correspondence between the main elements of the Examples and the main elements of the invention described in the "Means for Solving the Problem" section does not limit the elements of the invention described in the "Means for Solving the Problem" section, since the Examples are examples for specifically explaining the mode for implementing the invention described in the "Means for Solving the Problem" section. In other words, the interpretation of the invention described in the "Means for Solving the Problem" section should be based on the description in that section, and the Examples are merely specific examples of the invention described in the "Means for Solving the Problem" section.

[0056] The above describes the form for carrying out the present invention using examples, but the present invention is not limited to these examples in any way, and it goes without saying that the present invention can be carried out in various forms within the scope that does not deviate from the gist of the present invention. [Industrial Applicability]

[0057] The present invention can be used in the charging system manufacturing industry and the like. [Explanation of symbols]

[0058] 10 charging system, 12 power system, 18 system management server, 20 charging stand, 22 power adjustment unit, 24 stand ECU, 28 stand management server, 30 vehicle, 32 battery, 33 display, 34 vehicle ECU, 38 vehicle management server, 40 mobile terminal.

Claims

1. A charging system that charges an on-board power storage device mounted on an electric vehicle using power supplied from a power grid, notifying a user of an electricity rate system including: a specific time period as a time period in which renewable energy-derived electricity generated using renewable energy as a power source among the supplied electricity is in surplus to the demand for electricity in the power grid; a non-specific time period different from the specific time period; a first charge as an electricity rate during the specific time period, which is set to a basic charge regardless of the amount of electricity of the supplied electricity; and a second charge as an electricity rate during the non-specific time period, which is set to the sum of the basic charge and an additional charge based on the supplied electricity; determining whether the user desires to reflect the electricity rate system in the charging permission time slot; When the user desires that the power rate system be reflected in the charging permission time period, the specific time period is set as the charging permission time period, and charging of the vehicle-mounted power storage device using the supplied power is permitted during the specific time period, and charging of the vehicle-mounted power storage device using the supplied power is prohibited during the non-specific time period. Charging system.

2. 2. The charging system according to claim 1, a charging facility that charges the vehicle-mounted power storage device using the supplied power; a transmitting device that transmits the specific time period, the non-specific time period, and the first and second fees; a notification device that receives the specific time period, the non-specific time period, and the first and second fees transmitted from the transmission device and notifies the user of the received fees. Charging system.

3. A transmitting device used in the charging system described in claim 1, which transmits the specific time period, the non-specific time period, and the first and second fees.

4. A notification device used in the charging system described in claim 1, which notifies the user of the specific time period, the non-specific time period, and the first and second fees.

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