Power management system

Abstract

To appropriately handle information obtained through different communication channels.SOLUTION: A management server executes processes including the steps of: S302 of storing first data when it receives the first data via a DCM (Yes in S300); S308 of storing second data when it receives the second data via an indoor controller (Yes in S304); S314 of executing power control using the second data when latest transmission times of both data do not match (No in S308); S316 of determining that an abnormality has occurred in a system when the transmission times match (Yes in S308) and battery information does not match (No in S310); and S312 of executing power control using the first data and the second data when the battery information matches (Yes in S310).SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a power management system. [Background technology]

[0002] There is known a power management system that manages energy in a power grid. For example, a vehicle equipped with a power storage device may be connected to the power grid via a building. In order to control the power of the power storage device equipped in the vehicle, communication may be performed between a server and the vehicle according to various communication standards.

[0003] JP 2022-184741 A (Patent Document 1) discloses a technology for controlling a device that communicates in a format conforming to multiple communication standards by converting the communication format, for example. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-184741 A Summary of the Invention [Problem to be solved by the invention]

[0005] For example, communication between the server and the vehicle as described above may be performed by wireless communication, or may be performed by wired communication when the power grid and the vehicle are connected by a cable or the like. When communication is performed via multiple communication paths in this way, there may be a discrepancy in the timing of reception or the contents of the received information depending on the reliability of each communication path. Therefore, in such cases, it is necessary to handle the received information appropriately.

[0006] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide a power management system that appropriately handles information acquired via different communication paths. [Means for solving the problem]

[0007] A power management system according to an aspect of the present disclosure includes a vehicle equipped with a power storage device, a transmission facility that transmits power between a power grid and the power storage device, and a server that communicates with the vehicle. The server includes a communication device that communicates through at least one of a first communication path that communicates between the vehicle and the server and a second communication path that communicates between the transmission facility and the server, and a control device that executes power control between the vehicle and the transmission facility. The control device receives first data including information about the power storage device through the first communication path, receives second data including the information through the second communication path, and executes power control using the second data when a first time when the first data is transmitted from the vehicle to the server differs from a second time when the second data is transmitted from the transmission facility to the server.

[0008] In this way, when the first time when the first data is transmitted from the vehicle to the server differs from the second time when the second data including the same information is transmitted from the transmission facility to the server, the first data transmitted through the first communication path, which is less reliable than the second communication path, is not used for power control, so that deterioration of control accuracy can be suppressed. Therefore, information acquired through different communication paths can be appropriately handled.

[0009] In one embodiment, the control device determines that an abnormality has occurred in the power management system when the first time and the second time match and the acquired information does not match the first data and the second data.

[0010] In this way, since the information about the power storage device cannot be appropriately acquired, it is possible to accurately determine that an abnormality has occurred in the power management system.

[0011] In yet another embodiment, when it is determined that the power management system is abnormal, the control device executes charging control to charge the power storage device using a transmission facility.

[0012] In this manner, at least the power storage device is charged, allowing the user to use the vehicle promptly.

[0013] Furthermore, in one embodiment, the control device executes a process of notifying the user that charging control will be executed when charging control is executed due to an abnormality in the power management system.

[0014] In this way, the user can be made aware that charging of the power storage device is to be performed, which makes it possible to adjust the charging timing when, for example, the user wishes to charge the power storage device at a different time period.

[0015] In yet another embodiment, the control device performs power control using the first data and the second data when the first time and the second time coincide and when the acquired information coincides between the first data and the second data.

[0016] In this way, for example, when the amount of data contained in the first data and the amount of data contained in the second data differ, the data can be complemented between the first data and the second data, thereby enabling power control to be performed with high accuracy. Effect of the Invention

[0017] According to the present disclosure, it is possible to provide a power management system that appropriately handles information acquired through different communication paths. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram illustrating an example of a configuration of a power management system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram illustrating an example of a communication configuration of a power management system according to the present embodiment. [Diagram 3] 4 is a flowchart illustrating an example of a process executed in a vehicle. [Figure 4]4 is a flowchart illustrating an example of processing executed by an EVSE. [Diagram 5] 13 is a flowchart illustrating an example of a process executed by a management server. [Figure 6] 13 is a diagram showing an example of an operation corresponding to whether or not a transmission time matches battery information; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and their description will not be repeated.

[0020] Fig. 1 is a diagram showing an example of the configuration of a power management system 1 according to the present embodiment. As shown in Fig. 1, the power management system 1 includes a vehicle 10, a power system 40, a building 50, a management server 100, a terminal 200, and a DCM (Data Communication Module) server 300.

[0021] The building 50 includes a smart meter 54, a distribution board 56, other loads 58, an indoor controller 60, and an EVSE (Electric Vehicle Supply Equipment) 70.

[0022] The smart meter 54 detects the amount of power transmitted between the power grid 40 and the building 50 (more specifically, the distribution board 56). The smart meter 54 detects, for example, the amount of power supplied from the power grid 40 to the building 50. Furthermore, the smart meter 54 detects, for example, the amount of power supplied from the building 50 to the power grid 40. The smart meter 54 transmits information indicating the detected amount of power to the indoor controller 60.

[0023] The distribution board 56 is capable of supplying the voltage of the power supplied from the power system 40 to various electric devices including the EVSE 70 and other loads 58. The distribution board 56 is provided with a cutoff circuit capable of cutting off the power supply to various electric devices such as a breaker. The other loads 58 are provided, for example, within the building 50, and include various electric devices other than the EVSE 70 (for example, home appliances).

[0024] The indoor controller 60 is a control device for managing power supplied from the power system 40 via the distribution board 56 to various electrical devices in the building 50, and power supplied from any power source in the building 50 to the power system 40 via the distribution board 56. The indoor controller 60 is configured to be capable of acquiring information from the smart meter 54 and various electrical devices connected as control targets (e.g., the EVSE 70 described below), and to be capable of transmitting various control commands (e.g., a command to execute charging control, etc.) to the various electrical devices.

[0025] The EVSE 70 is a transmission facility capable of transmitting power, configured to be connectable to the vehicle 10 using a connector and a cable. The EVSE 70 supplies power supplied from the distribution board 56 to the vehicle 10, and outputs power supplied from the vehicle 10 to the distribution board 56, in response to a control signal from the indoor controller 60. The EVSE 70 may be configured to supply DC power to the power storage device 11 mounted on the vehicle 10, or may be configured to supply AC power to a charging device mounted on the vehicle 10, and convert the AC power to DC power in the charging device and supply the DC power to the power storage device 11.

[0026] The vehicle 10 is an electric vehicle having a power storage device 11 configured by a rechargeable DC power source, a drive device (not shown) configured by an electric motor or the like, and a communication device 16 including a DCM. The power storage device 11 may be, for example, a secondary battery such as a nickel-metal hydride battery or a lithium-ion battery with a liquid or solid electrolyte, or may be a capacitor or the like. The vehicle 10 is configured to be capable of charging the power storage device 11 using power supplied from the EVSE 70. The vehicle 10 is also configured to be capable of supplying power from the power storage device 11 to the EVSE 70. The vehicle 10 is also configured to be capable of communicating (for example, wireless communication) with the DCM server 300 using the communication device 16 (specifically, the DCM). The vehicle 10 is also configured to be capable of communicating (for example, wired communication) with the EVSE 70 via a connector and a cable using the communication device 16 when a connector of the EVSE 70 is connected to an inlet (not shown) of the vehicle 10. Although vehicle 10 is representatively illustrated in FIG. 1, a plurality of vehicles other than vehicle 10 may be connected to an EVSE other than EVSE 70.

[0027] Management server 100 receives a request for power supply and demand from power company 150 and manages the supply and demand of power in a power grid formed in a predetermined area including building 50. For example, when management server 100 is requested by power company 150 to increase the supply of power, management server 100 transmits a control command to control objects in the power grid that can supply power, including building 50, to supply power to power system 40. In the control objects in the power grid, the power supplied to power system 40 increases in response to the control command, making it possible to satisfy the request from power company 150.

[0028] The terminal 200 is a mobile terminal carried by the owner of the vehicle 10. The terminal 200 is configured to be able to communicate with the management server 100 via a communication network (not shown). The terminal 200 is provided with a display device, and displays various information (text information or image information) based on information transmitted from the management server 100.

[0029] The DCM server 300 is configured to be able to communicate with a plurality of vehicles (including vehicle 10) equipped with DCMs. For example, the DCM server 300 receives information about the installed power storage devices from the plurality of vehicles equipped with DCMs, or transmits update information of various control programs and the like to the plurality of vehicles equipped with DCMs. The information about the power storage devices received by the DCM server 300 includes information about the SOC (State Of Charge) of the power storage devices, information about the amount of power that can be charged, information about the amount of power that can be discharged, and the like.

[0030] The vehicle 10, the indoor controller 60, the EVSE 70, the management server 100, the terminal 200, and the DCM server 300 are configured to transmit and receive various types of information through communication.

[0031] FIG. 2 is a diagram showing an example of a communication configuration of the power management system 1 according to the present embodiment. As shown in FIG. 2, the vehicle 10 includes an ECU (Electronic Control Unit) 12, a storage device 14, and a communication device 16. The ECU 12 has a CPU (Central Control Unit) and memory (such as a ROM (Read Only Memory) and a RAM (Random Access Memory)) not shown, and performs a power supply process of supplying power from the power storage device 11 to the EVSE 70 based on various information stored in the memory and various information acquired through communication, or a charging process of charging the power storage device 11 using power from the EVSE 70. The various information includes a charging command and a discharging command from the EVSE 70. The storage device 14 stores various information received using the communication device 16 and predetermined information. The communication device 16 includes a DCM capable of wireless communication with the DCM server 300 via a communication network (not shown, such as a mobile phone line) and a communication unit (not shown) capable of wired communication (for example, PLC (Power Line Communication) communication or CAN (Controller Area Network) communication) with the EVSE 70.

[0032] The indoor controller 60 has a CPU and memory (not shown), and executes processing related to power supply and demand management in the building 50 based on various information stored in the memory and various information acquired by communication with the EVSE 70 and the management server 100. The processing related to power supply and demand management in the building 50 includes, for example, a process of transmitting a command to execute a charging process (a charging command) to the EVSE 70, and a process of transmitting a command to execute a discharging process (a discharging command). In response to a request from the management server 100, the indoor controller 60 transmits to the management server 100 information about the power storage device 11 mounted on the vehicle 10 that is the target of power management controlled by the management server 100 in the power network. Alternatively, when the indoor controller 60 receives information about the power storage device 11 from the vehicle 10, the indoor controller 60 may transmit the information to the management server 100 regardless of whether or not a request from the management server 100 is received.

[0033] The EVSE 70 includes a control device 72, a storage device 74, and a communication device 76. The control device 72 has a CPU and memory (not shown), and transmits a charging command to the vehicle 10 based on various information stored in the memory or various information acquired through communication, or transmits a discharging command to the vehicle 10. The storage device 74 stores various information received using the communication device 76 and predetermined information. The communication device 76 is configured to be capable of communicating with the indoor controller 60 or with the vehicle 10 via a communication network, wirelessly or wired.

[0034] The management server 100 includes a control device 102, a storage device 104, and a communication device 106. The control device 102 has a CPU and memory (not shown), and executes processing related to supply and demand management in the power network based on various information stored in the memory and various information acquired through communication. The processing related to supply and demand management in the power network includes, for example, a process of transmitting a charge command to the indoor controller 60 and a process of transmitting a discharge command. In addition, the management server 100 acquires information for implementing supply and demand management (for example, information related to the power storage device 11 mounted on the vehicle 10) from the indoor controller 60 and the DCM server 300.

[0035] The storage device 104 stores various information received using the communication device 106 and predetermined information. The storage device 104 stores, for example, information for identifying a vehicle to be controlled in the supply and demand management in the power grid (for example, a vehicle number, a chassis number, etc.). This information is used by the management server 100 to obtain information about the vehicle 10 from the DCM server 300.

[0036] The communication device 106 is configured to be able to communicate with the terminal 200, the DCM server 300, or the indoor controller 60 wirelessly or wired via a communication network (not shown) (for example, the Internet or a dedicated line).

[0037] The terminal 200 includes a control device 202, a storage device 204, a communication device 206, and a display device 208. The control device 202 has a CPU and memory (not shown), and executes display processing based on various information stored in the memory and various information acquired through communication. The storage device 104 stores various information received using the communication device 206 and predetermined information. The communication device 206 is configured to be able to wirelessly communicate with the management server 100 via a communication network (not shown, for example, a mobile phone line or the Internet). The display device 208 displays text information, images, and the like in response to a control signal from the control device 202.

[0038] The DCM server 300 has a CPU and memory (not shown), and executes processing for transmitting and receiving information about each of the multiple vehicles and the power storage device based on various information stored in the memory and various information acquired by communication with the multiple vehicles and the management server 100. In response to a request from the management server 100, the DCM server 300 transmits to the management server 100 information about the power storage device 11 mounted on the vehicle 10 that is subject to power management control by the management server 100 in the power network. Alternatively, when the DCM server 300 receives information about the power storage device 11 from the vehicle 10, it may transmit the information to the management server 100 regardless of whether or not a request from the management server 100 has been received.

[0039] In the power management system 1 having the above-described communication configuration, devices capable of communicating with each other communicate with each other in accordance with various communication standards.

[0040] Management server 100 acquires information about the power storage devices (such as information about SOC (State Of Charge)) from a plurality of vehicles including vehicle 10 in order to estimate the chargeable and dischargeable amounts of the plurality of vehicles in the power network.

[0041] Information about the power storage device is transmitted via at least one of a first communication path (dashed line arrow in Figure 1) that passes through the DCM server 300 to the management server 100 without passing through the EVSE 70, and a second communication path (solid line arrow in Figure 1) that passes through the EVSE 70 and the indoor controller 60 to the management server 100.

[0042] For example, when ECU 12 of vehicle 10 is not connected to EVSE 70, it transmits information about the power storage device 11 to management server 100 via the first communication path. On the other hand, when ECU 12 of vehicle 10 is connected to EVSE 70, it transmits information about the power storage device 11 to management server 100 via each of the first and second communication paths.

[0043] When data including the same information is transmitted through both paths, data with different contents or at different times may be received depending on the reliability of each communication path. When a path for wireless communication such as a mobile phone line is included between the communication device 16 and the DCM server 300, if the radio wave conditions become worse than normal when the vehicle 10 is traveling or stopped in a tunnel or underground, a delay or interruption may occur in communication from the communication device 16 to the DCM server 300. As a result, when information is transmitted through the first communication path, data with different timing or different contents may be received in the management server 100 compared to when information is transmitted through the second communication path. In this case, it is required to handle the received data appropriately.

[0044] Therefore, in this embodiment, when there is a discrepancy between a first time when first data including information on the power storage device 11 is transmitted from the vehicle 10 to the management server 100 via the first communication path and a second time when second data including the information is transmitted from the EVSE 70 to the management server 100, the management server 100 performs power control related to supply and demand management using the second data.

[0045] In this way, when there is a discrepancy between the first time when the first data is transmitted from the vehicle 10 to the management server 100 and the second time when the second data including the same information is transmitted from the EVSE 70 to the management server 100, the first data, which is less reliable than the second communication path, is not used for power control, so that it is possible to suppress a decrease in the control accuracy of power control in supply and demand management. Therefore, it is possible to appropriately handle information acquired through different communication paths.

[0046] Hereinafter, the processing executed by the vehicle 10 (ECU 12 thereof) will be described with reference to Fig. 3. Fig. 3 is a flow chart showing an example of the processing executed by the vehicle 10. Note that the series of processing shown in the flow charts of Figs. 3 to 5 is repeatedly executed at predetermined intervals.

[0047] In step (hereinafter, step will be abbreviated as S) 100, ECU 12 determines whether or not the plug is connected. For example, ECU 12 may determine that the plug is connected when the connector of EVSE 70 is connected to an inlet of vehicle 10. For example, ECU 12 may determine that the connector is connected when receiving an on signal from a circuit (not shown) that outputs an on signal when the connector is connected to the inlet. If it is determined that the plug is connected (YES in S100), the process proceeds to S102.

[0048] In S102, ECU 12 determines whether or not a transmission condition is satisfied. The transmission condition includes, for example, a first condition that a transmission request has been received from management server 100. Alternatively, the transmission condition may include a second condition that a predetermined time has elapsed since the previous transmission timing. Alternatively, the transmission condition may include at least one of the first condition and the second condition. If it is determined that the transmission condition is satisfied (YES in S102), the process proceeds to S104.

[0049] In S104, ECU 12 uses communication device 16 to transmit first data including a transmission time (hereinafter referred to as a first time) and information on the SOC of power storage device 11 (hereinafter referred to as first battery information) to management server 100 via DCM server 300. ECU 12 sets the transmission time at which the first data is transmitted to DCM server 300 as the first time. Thereafter, the process proceeds to S106.

[0050] In S106, ECU 12 transmits information on the SOC of power storage device 11 (hereinafter, referred to as second battery information) to EVSE 70 using communication device 16. Then, the process ends. If it is determined that the transmission condition is not satisfied (NO in S102), the process proceeds to S108.

[0051] In S108, the ECU 12 uses the communication device 16 to transmit the first data to the management server 100 via the DCM server 300. Then, the process ends. If it is determined that the plug is not connected (NO in S100), the process ends.

[0052] Next, processing executed by the EVSE 70 (controller 72 thereof) will be described with reference to Fig. 4. Fig. 4 is a flowchart showing an example of processing executed by the EVSE 70.

[0053] In S200, the control device 72 determines whether or not the plug is connected. For example, the control device 72 may determine that the plug is connected when a connector is connected to an inlet of the vehicle 10. For example, the control device 72 may determine that the connector is connected when a signal indicating that the connector is connected to the inlet is received from the vehicle 10 by wired communication via a cable or by wireless communication. If it is determined that the plug is connected (YES in S200), the process proceeds to S202.

[0054] In S202, control device 72 determines whether or not to receive second battery information from vehicle 10. If it is determined that the second battery information has been received from vehicle 10 (YES in S202), the process proceeds to S204.

[0055] In S204, the control device 72 transmits second data including a transmission time (hereinafter referred to as the second time) and the second battery information to the management server 100 via the indoor controller 60. The control device 72 sets the transmission time to be transmitted to the indoor controller 60 as the second time. The process then ends. Note that if it is determined that the vehicle is not plugged in (NO in S200) or if it is determined that the second battery information has not been received from the vehicle 10 (NO in S202), the process ends.

[0056] Next, a process executed by the control device 102 of the management server 100 will be described with reference to Fig. 5. Fig. 5 is a flow chart showing an example of a process executed by the management server 100.

[0057] In S300, the control device 102 determines whether or not the first data has been received from the vehicle 10 via the DCM server 300. If it is determined that the first data has been received from the vehicle 10 via the DCM server 300 (YES in S300), the process proceeds to S302.

[0058] In S302, the control device 102 stores the received first data in the storage device 104. Thereafter, the process proceeds to S304.

[0059] In S304, the control device 102 determines whether or not the second data has been received from the EVSE 70 via the indoor controller 60. If it is determined that the second data has been received via the indoor controller 60 (YES in S304), the process proceeds to S306.

[0060] In S306, the control device 102 stores the received second data in the storage device 104. Thereafter, the process proceeds to S308.

[0061] In S308, the control device 102 determines whether the most recent transmission times of both data received on both paths (the first communication path and the second communication path) match. The control device 102 determines that the most recent transmission times match, for example, when the magnitude of the difference between the first time in the most recent first data and the second time in the most recent second data is equal to or less than a threshold value. The threshold value is, for example, a predetermined value, for example, a value of about several minutes. If it is determined that the most recent transmission times match (YES in S308), the process proceeds to S310.

[0062] In S310, the control device 102 determines whether the battery information of both data received via both paths matches. For example, the control device 102 determines that the battery information matches when the SOC value included in the most recent first battery information and the SOC value included in the most recent second battery information are the same. If it is determined that the battery information of both data received via both paths matches (YES in S310), the process proceeds to S312.

[0063] In S312, the control device 102 executes power control using the first data and the second data. The power control includes power control related to supply and demand management. When the first data is acquired from the DCM server 300 so as to include more detailed information than the second data, the control device 102 uses the first data to complement the second data, or uses the first data and the second data to accurately estimate the SOC and changes in SOC. This enables supply and demand management of power in the power network in accordance with a supply and demand request from the power company 150. The process then ends. On the other hand, if it is determined that the most recent transmission time diverges (NO in S308), the process proceeds to S314.

[0064] In S314, the control device 102 executes power control using the second data. The power control is as described above except that the first data is not used, and detailed description thereof will not be repeated. The process then ends. If it is determined that the battery information of both data does not match (NO in S310), the process proceeds to S316.

[0065] In S316, the control device 102 determines that an abnormality has occurred in the power management system 1. The control device 102 determines that an abnormality has occurred such that the power storage device 11 mounted on the vehicle 10 cannot be used for power supply and demand management. Then, the process proceeds to S318.

[0066] In S318, the control device 102 executes a failure operation. Specifically, the control device 102 transmits, to the vehicle 10 via the indoor controller 60 and the EVSE 70, a command to execute a charging process for charging the power storage device 11 mounted on the vehicle 10 that is to be determined to have an abnormality to a predetermined charging state (for example, a fully charged state). Thereafter, the process proceeds to S320.

[0067] In S320, the control device 102 executes a notification process. Specifically, the control device 102 transmits to the terminal 200 a control command for displaying that the power storage device 11 is being charged due to the occurrence of an abnormality in the power management system 1. Thereafter, the process ends.

[0068] The operation of the power management system 1 according to the present embodiment based on the above configuration and flowchart will be described. For example, when the vehicle 10 is plugged in (YES in S100) and a transmission condition is met such as by reaching a predetermined time (YES in S102), first data including a first time and first battery information is transmitted to the management server 100 via the DCM server 300 (S104). Furthermore, second battery information is transmitted to the EVSE 70 via the connector and cable (S106).

[0069] In the EVSE 70, when the second battery information is received from the vehicle 10 during plug connection (YES in S200), second data including the second time and the second battery information is transmitted to the management server 100 via the indoor controller 60 (S204).

[0070] <When both transmission times and both battery information match> When the first data is received from the vehicle 10 via the DCM server 300 (YES in S300), the received first data is stored in the storage device 104 (S302). On the other hand, when the second data is received from the EVSE 70 via the indoor controller 60 (YES in S304), the received second data is stored in the storage device 104 (S306).

[0071] Then, it is determined whether the first time included in the most recent first data and the second time included in the most recent second data match (S308). If it is determined that the magnitude of the difference between the first time and the second time is equal to or less than the threshold value (YES in S308), it is determined whether the first battery information and the second battery information match (S310). For example, if the SOC value included in the first battery information and the SOC value included in the second battery information are the same, it is determined that the first battery information and the second battery information match (YES in S310). Therefore, power control is performed using the first data and the second data (S312).

[0072] <When only the sending times match> When it is determined that the first time and the second time match because the magnitude of the difference between the first time and the second time is equal to or less than the threshold value (YES in S308), it is determined whether the first battery information and the second battery information match (S310). For example, when the SOC value included in the first battery information and the SOC value included in the second battery information are not the same value, it is determined that the first battery information and the second battery information do not match (NO in S310). Then, it is determined that an abnormality has occurred in the system (S316), and a fail-time operation is executed (S318). At this time, a command to execute a charging process to charge the power storage device 11 of the vehicle 10 is transmitted to the vehicle 10. When the ECU 12 of the vehicle 10 receives the command to execute the charging process, it executes the charging process and charges the power storage device 11. A notification process is executed (S320), and text information or image information to the effect that the power storage device 11 is being charged due to a system abnormality is displayed on the display device 208 of the terminal 200.

[0073] <If the two transmission times do not match> If the first data is not received from the vehicle 10 via the DCM server 300 (NO at S300) and the second data is received from the EVSE 70 via the indoor controller 60 (YES at S304), the received second data is stored in the memory device 104 (S306).

[0074] Therefore, the magnitude of the difference between the first time of the most recent first data and the second time of the most recent second data exceeds the threshold, and it is determined that the first time and the second time are separated from each other (NO in S308). As a result, power control is executed using only the second data (S314).

[0075] Fig. 6 is a diagram showing an example of an operation corresponding to whether or not the transmission time and the battery information match. As shown in Fig. 6, when the most recent transmission times do not match, power control using the second data is executed regardless of whether or not the values ​​of the battery information (SOC) match. On the other hand, when the most recent transmission times match and the most recent battery information values ​​match, power control using the first data and the second data is executed. Also, when the most recent transmission times match and the most recent battery information values ​​do not match, it is determined that an abnormality has occurred in the power management system 1.

[0076] As described above, according to the power management system 1 of the present embodiment, when there is a discrepancy between the first time when the first data is transmitted from the vehicle 10 to the management server 100 and the second time when the second data including the same information is transmitted from the EVSE 70 to the management server 100, the first data of the first communication path, which is less reliable than the second communication path, is not used for power control, so that it is possible to suppress a decrease in the control accuracy of power control in supply and demand management. Therefore, it is possible to provide a power management system that appropriately handles information acquired through different communication paths.

[0077] Furthermore, when the first time and the second time match, and the first battery information and the second battery information do not match, it is impossible to properly acquire information about the power storage device 11, and therefore it is possible to accurately determine that an abnormality has occurred in the power management system 1.

[0078] Furthermore, when it is determined that an abnormality has occurred in the power management system 1, the power storage device 11 is charged, so that the user can use the vehicle 10 promptly.

[0079] Furthermore, since the terminal 200 is notified that charging control will be executed due to an abnormality in the power management system, the user of the terminal can be made aware that charging of the power storage device will be performed. This makes it possible to adjust the charging timing when the user wishes to charge at a different time period, for example.

[0080] Furthermore, when the first time and the second time match, the first battery information and the second battery information match, and the first battery information and the second battery information match, power control related to supply and demand management is performed using the first data and the second data, so that power control can be performed with high accuracy by complementing the second data with the first data.

[0081] Modifications will be described below.

[0082] In the above-described embodiment, an example has been described in which, when it is determined that an abnormality has occurred in the power management system 1, a notification is sent to the terminal 200 to inform the user that the power storage device 11 is being charged due to the abnormality in the power management system 1. However, instead of or in addition to the terminal 200, the notification may be sent using a display device inside the vehicle 10.

[0083] Furthermore, in the above-described embodiment, the battery information includes the SOC of the power storage device 11 as an example. However, for example, instead of or in addition to the SOC, the battery information may include at least one of the dischargeable capacity, the chargeable capacity, the current amount of power that can be discharged, and the current amount of power that can be charged.

[0084] Furthermore, in the above-described embodiment, vehicle 10 has been described as an example of a control target of management server 100, but when multiple vehicles are controlled, it is also possible to determine whether the transmission time and battery information match for each vehicle, and perform operations such as those shown in FIG. 6 depending on the determination result.

[0085] The above-described modified examples may be implemented in whole or in part in appropriate combination.

[0086] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0087] 1 Power management system, 10 Vehicle, 11 Power storage device, 12 ECU, 14, 74, 104, 204 Storage device, 16, 76, 106, 206 Communication device, 40 Power system, 50 Building, 54 Smart meter, 56 Distribution board, 58 Load, 60 Indoor controller, 70 EVSE, 72, 102, 202 Control device, 100 Management server, 150 Power company, 200 Terminal, 208 Display device, 300 DCM server.

Claims

1. A vehicle equipped with a power storage device; a transmission facility that transmits power between a power grid and the power storage device; a server that communicates with the vehicle; The server, a communication device that communicates via at least one of a first communication path for communication between the vehicle and the server and a second communication path for communication between the transmission facility and the server; a control device that performs power control between the vehicle and the transmission facility, The control device includes: receiving first data including information about the power storage device over the first communication path; receiving second data including the information on the second communication path; a power management system that performs the power control using the second data when a first time at which the first data is transmitted from the vehicle to the server differs from a second time at which the second data is transmitted from the transmission facility to the server.

2. The power management system of claim 1, wherein the control device determines that an abnormality has occurred in the power management system when the first time and the second time match and the acquired information does not match the first data and the second data.

3. The power management system according to claim 2 , wherein the control device, when it is determined that the power management system is abnormal, executes charging control to charge the power storage device using the transmission facility.

4. The power management system according to claim 3 , wherein the control device executes a process of notifying the user that the charging control is to be executed when the charging control is to be executed due to an abnormality in the power management system.

5. 2. The power management system of claim 1, wherein when the first time and the second time match and the acquired information matches the first data and the second data, the control device performs the power control using the first data and the second data.

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