Power management system

Abstract

The invention relates to a power management system. A management server performs a process including: a step (S302) of storing first data when the first data is received via a DCM (Yes in S300); a step (S308) of storing second data when the second data is received via the indoor controller (Yes in S304); a step (S314) of performing power control using the second data when the latest transmission times of the two data do not match each other (NO in S308); a step (S316) of determining that an abnormality has occurred on the system when the transmission times match each other (YES in S308) and the plurality of pieces of battery information do not match each other (NO in S310); and a step (S312) of performing power control using the first data and the second data when the plurality of pieces of battery information match each other (Yes in S310).

Description

Technical Field

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

[0002] A power management system that performs energy management in a power grid is known. For example, a vehicle having a power storage device mounted thereon is sometimes connected to the power grid via a building. In order to control the power of the power storage device mounted on the vehicle, communication according to various communication standards is sometimes performed between a server and the vehicle.

[0003] For example, Japanese Unexamined Patent Application Publication No. 2022-184741 (JP 2022-184741 A) discloses a technology of controlling a device to perform communication in a format according to a plurality of communication standards by converting a communication format or the like. Summary of the invention

[0004] Between the server and the vehicle as described above, for example, communication is sometimes performed not only by wireless communication but also by wired communication when the power grid and the vehicle are connected with a cable or the like. When communication is performed through a plurality of communication paths as described above, a shift in reception timing and reception content sometimes occurs depending on the reliability of the individual communication paths. Therefore, it is required to appropriately process the information received in such a case.

[0005] The present disclosure is designed to solve the aforementioned problems, and an object thereof is to provide a power management system that appropriately processes information acquired through different communication paths.

[0006] According to one aspect of the present disclosure, a power management system includes: a vehicle on which a power storage device is mounted; a transmission facility that performs power transmission between a power grid and the power storage device; and a server that communicates with the vehicle. The server includes: a communication device that performs communication through at least any 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; and a control device that performs power control between the vehicle and the transmission facility. The control device receives first data including information about the power storage device on the first communication path, receives second data including the information on the second communication path, and performs power control using the second data when a first time when the first data is sent from the vehicle to the server and a second time when the second data is sent from the transmission facility to the server deviate from each other.

[0007] By doing so, when the first time when the first data is transmitted from the vehicle to the server and the second time when the second data including the equivalent information is transmitted from the transmission facility to the server deviate from each other, the first data transmitted through the first communication path having lower reliability than the second communication path is not used for power control, and therefore, a decrease in control accuracy can be suppressed. Therefore, information acquired through different communication paths can be appropriately processed.

[0008] In one embodiment, when the first time and the second time coincide with each other and the first data and the second data do not coincide with each other in terms of acquired information, the control device may determine that an abnormality occurs on the power management system.

[0009] By doing so, since the system is in a state where the information of the power storage device cannot be appropriately acquired, it is possible to determine with high accuracy that an abnormality has occurred on the power management system.

[0010] Furthermore, in one embodiment, when it is determined that the power management system is abnormal, the control device may perform charging control for charging the power storage device using the transmission facility.

[0011] By doing so, since at least charging of the power storage device is performed, the user can quickly use the vehicle.

[0012] Furthermore, in one embodiment, when charging control is performed due to an abnormality of the power management system, the control device may perform a process of reporting that charging control is to be performed.

[0013] By doing so, the user can be made aware that the power storage device is to be charged. Thus, in the case where the user wants to charge at another time or the like, the charging timing can be adjusted.

[0014] Furthermore, in one embodiment, when the first time and the second time coincide with each other and the first data and the second data coincide with each other in terms of acquired information, the control device may perform power control using the first data and the second data.

[0015] By doing so, since data complementation or the like between the first data and the second data can be performed when the amount of data included in the first data and the amount of data included in the second data are different from each other, power control can be performed with high accuracy.

[0016] According to the present disclosure, it is possible to provide a power management system that appropriately processes information acquired through different communication paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals represent like elements, and in which:

[0018] Figure 1 is a diagram showing an example of a configuration of a power management system according to an embodiment of this document;

[0019] Figure 2 is a diagram showing an example of a configuration of communication of a power management system according to an embodiment of this document;

[0020] Figure 3 is a flowchart showing an example of a process performed by a vehicle;

[0021] Figure 4 is a flowchart showing an example of a process performed by an EVSE;

[0022] Figure 5 is a flowchart illustrating an example of a process performed by a management server; and

[0023] Figure 6 is a diagram showing an example of an operation corresponding to the presence and absence of coincidence of a transmission time and a plurality of pieces of battery information. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In particular, the same reference numerals are given to equivalent or corresponding parts in the accompanying drawings, and their descriptions are not repeated.

[0025] Figure 1 1 is a diagram showing an example of a configuration of a power management system 1 according to an embodiment of the present invention. Figure 1 As shown in , 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 data communication module (DCM) server 300 .

[0026] The building 50 includes a smart meter 54 , a distribution board 56 , another load 58 , an indoor controller 60 , and electric vehicle supply equipment (EVSE) 70 .

[0027] The smart meter 54 detects the amount of power transmitted between the power system 40 and the building 50 (more specifically, the distribution board 56). For example, the smart meter 54 detects the amount of power supplied from the power system 40 to the building 50. In addition, for example, the smart meter 54 detects the amount of power supplied from the building 50 to the power system 40. The smart meter 54 transmits information indicating the detected amount of power to the indoor controller 60.

[0028] The distribution board 56 enables the voltage of the power supplied from the power system 40 to be supplied to the EVSE 70 and various electrical devices including other loads 58. In the distribution board 56, an interruption circuit such as a circuit breaker is provided, which can interrupt the power supply to the various electrical devices. For example, the other load 58 is provided in the building 50 and includes various electrical devices (e.g., household appliances) other than the EVSE 70.

[0029] The indoor controller 60 is a control device for managing the power supplied from the power system 40 to various electrical devices in the building 50 via the distribution board 56, and the power supplied from any of the power sources in the building 50 to the power system 40 via the distribution board 56. The indoor controller 60 is configured to be able to acquire information from the smart meter 54 and various electrical devices (e.g., such as the EVSE 70 mentioned later) connected as control targets and to be able to send various control commands (e.g., execution commands such as charging control) to the various electrical devices.

[0030] The EVSE 70 is a transmission facility configured to be able to be connected to the vehicle 10 using a connector and a cable and to be able to perform power transmission. In response to a control signal from the indoor controller 60, 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. 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 rechargeable device mounted on the vehicle 10 and allow the rechargeable device to perform conversion to DC power to be supplied to the power storage device 11.

[0031] The vehicle 10 is an electric vehicle having a power storage device 11 constituted by a rechargeable DC power source, a drive line (not shown) constituted by an electric motor or the like, and a communication device 16 including a DCM. For example, the power storage device 11 may be a secondary battery having a liquid or solid electrolyte, such as a nickel-hydrogen battery or a lithium-ion battery, or may be a capacitor or the like. The vehicle 10 is configured to be able to charge the power storage device 11 using power supplied from the EVSE 70. In addition, the vehicle 10 is configured to be able to supply power of the power storage device 11 to the EVSE 70. In addition, the vehicle 10 is configured to be able to perform communication (e.g., wireless communication) with the DCM server 300 using the communication device 16 (specifically, the DCM). In addition, the vehicle 10 is configured to be able to perform communication (e.g., wired communication) with the EVSE 70 using the communication device 16 via a connector and a cable when the connector of the EVSE 70 is connected to an inlet (not shown) of the vehicle 10. In particular, although in Figure 1, the vehicle 10 is representatively illustrated, but a plurality of vehicles other than the vehicle 10 may be connected to a plurality of EVSEs other than the EVSE 70 .

[0032] When receiving a supply and demand request for electric power from the electric power company 150, the management server 100 performs supply and demand management of electric power in the electric grid formed in the predefined area including the building 50. When requesting to increase the supply of electric power by the electric power company 150, the management server 100 transmits a control command to supply electric power to the electric power system 40 to a control target capable of supplying electric power in the electric grid, the control target including the building 50. With respect to the control target in the electric grid, increasing the electric power supplied to the electric power system 40 according to the control command can satisfy the request of the electric power company 150.

[0033] 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). On the terminal 200, a display device is provided, and various information (character information or image information) is displayed based on information sent from the management server 100.

[0034] The DCM server 300 is configured to be able to communicate with a plurality of vehicles (including the vehicle 10) on which the DCM is mounted. For example, the DCM server 300 receives information about the installed power storage device from the plurality of vehicles on which the DCM is mounted, or transmits update information of various control programs and the like to the plurality of vehicles on which the DCM is mounted. The information about the power storage device received by the DCM server 300 includes information about the state of charge (SOC) of the power storage device, information about the chargeable amount of electric power, information about the dischargeable amount of electric power, and the like.

[0035] 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 information through communication.

[0036] Figure 2 1 is a diagram showing an example of a configuration of communication of the power management system 1 according to the embodiment of this invention. Figure 2As shown in FIG. 1 , the vehicle 10 includes an electronic control unit (ECU) 12, a storage device 14, and a communication device 16. The ECU 12 has a central control unit (CPU) and a memory (such as a read-only memory (ROM) and a random access memory (RAM)) not shown, and performs a power supply process of supplying power of the power storage device 11 to the EVSE 70 or a charging process of charging the power storage device 11 using power from the EVSE 70 based on various information stored in the memory and various information acquired through communication. The various information includes a charging command and a discharging command from the EVSE 70. The storage device 14 stores various information and predefined information received using the communication device 16. The communication device 16 includes a DCM capable of performing wireless communication with the DCM server 300 via a communication network not shown (such as a mobile phone line, for example), and a communication unit (not shown) capable of performing wired communication (such as power line communication (PLC) communication and controller area network (CAN) communication) with the EVSE 70.

[0037] The indoor controller 60 has a CPU and a memory, not shown, and performs processing on supply and demand management of electric power in the building 50 based on various information stored in the memory and various information acquired through communication with the EVSE 70 and the management server 100. For example, the processing on supply and demand management of electric power in the building 50 includes processing of sending an execution command (charge command) of a charging process to the EVSE 70, and processing of sending an execution command (discharge command) of a discharging process. In response to a request from the management server 100, the indoor controller 60 sends information on the power storage device 11 mounted on the vehicle 10, which is a control target of power management by the management server 100 in the power grid, to the management server 100. Otherwise, when receiving the relevant information from the vehicle 10, the indoor controller 60 may send the information on the power storage device 11 to the management server 100, regardless of the presence or absence of a request from the management server 100.

[0038] 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 a memory, which are not shown, and sends a charge command to the vehicle 10 or sends a discharge command to the vehicle 10 based on various information stored in the memory and various information acquired through communication. The storage device 74 stores various information and predefined information received using the communication device 76. The communication device 76 is configured to be able to perform communication with the indoor controller 60 or with the vehicle 10 in a wireless or wired manner via a communication network.

[0039] 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 a memory, which are not shown, and performs processing related to supply and demand management in the power grid based on various information stored in the memory and various information acquired through communication. For example, the processing related to supply and demand management in the power grid includes processing for sending a charging command and processing for sending a discharging command to the indoor controller 60. In addition, the management server 100 acquires information for performing supply and demand management (for example, information about the power storage device 11 installed on the vehicle 10) from the indoor controller 60 and the DCM server 300.

[0040] The storage device 104 stores various information and predefined information received using the communication device 106. For example, the storage device 104 stores information (such as a vehicle number and a frame number, for example) for specifying a vehicle that is a control target in supply and demand management in a power grid. The plurality of pieces of information are used for the management server 100 to acquire information about the vehicle 10 from the DCM server 300.

[0041] The communication device 106 is configured to be able to perform communication with the terminal 200 , with the DCM server 300 , or with the indoor controller 60 in a wireless or wired manner via a communication network (eg, the Internet, a dedicated line, etc.) not shown.

[0042] 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 a memory, which are not shown, and performs display processing based on various information stored in the memory and various information acquired through communication. The storage device 104 stores various information and predefined information received using the communication device 206. The communication device 206 is configured to be able to perform communication with the management server 100 in a wireless manner via a communication network, which is not shown (e.g., a mobile phone line, the Internet, etc.). The display device 208 displays character information, images, etc. according to a control signal from the control device 202.

[0043] The DCM server 300 has a CPU and a memory, not shown, and performs processing for transmitting and receiving information about the power storage device to / from each of a plurality of vehicles based on various information stored in the memory and various information acquired through communication with the plurality of vehicles and the management server 100. In response to a request from the management server 100, the DCM server 300 transmits information about the power storage device 11 mounted on the vehicle 10 that is a control target of power management by the management server 100 in the power grid to the management server 100. Otherwise, when receiving the relevant information from the vehicle 10, the DCM server 300 may transmit the information about the power storage device 11 to the management server 100 regardless of the presence or absence of a request from the management server 100.

[0044] In the power management system 1 having the configuration for communication as described above, the communicable devices perform communication with each other according to various communication standards.

[0045] In order to estimate the chargeable amount and the dischargeable amount for a plurality of vehicles in the grid, the management server 100 acquires information on the power storage devices (eg, information on the state of charge (SOC) etc.) from a plurality of vehicles including the vehicle 10 .

[0046] The first communication path ( Figure 1 The dot-dash arrow in the figure) and the second communication path ( Figure 1 The information about the power storage device is sent by at least one of the solid arrows in the figure.

[0047] For example, when not connected to the EVSE 70, the ECU 12 of the vehicle 10 transmits information about the power storage device 11 to the management server 100 through the first communication path. On the other hand, for example, when connected to the EVSE 70, the ECU 12 of the vehicle 10 transmits information about the power storage device 11 to the management server 100 through the first communication path and the second communication path alone.

[0048] When data including equivalent information is sent through two paths, data with different timing or different contents may sometimes be received depending on the reliability of the individual communication paths. When a path such as a mobile phone line is included between the communication device 16 and the DCM server 300 through which wireless communication is performed, delays, interruptions, etc. may occur in the communication from the communication device 16 to the DCM server 300 when the radio wave conditions are deteriorated compared to normal conditions when the vehicle 10 is traveling or stopped in a tunnel or underground. As a result, when information is sent through the first communication path, the management server 100 can receive data with different timing or different contents than when the information is sent through the second communication path. In this case, appropriate processing of the received data is required.

[0049] Therefore, in the embodiment of the present invention, the management server 100 is configured to: when a first time when first data including information about the power storage device 11 is sent from the vehicle 10 to the management server 100 via the first communication path and a second time when second data including relevant information is sent from the EVSE 70 to the management server 100 deviate from each other, use the second data to perform power control regarding supply and demand management.

[0050] By doing so, when 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 equivalent information is transmitted from the EVSE 70 to the management server 100 deviate from each other, the first data having lower reliability than the second data through the second communication path is not used for power control, and thus a decrease in control accuracy of power control in supply and demand management can be suppressed. Therefore, information acquired through different communication paths can be appropriately processed.

[0051] In the following, reference Figure 3 Processing executed by (the ECU 12 of) the vehicle 10 is described. Figure 3 is a flowchart showing an example of processing performed by the vehicle 10. In particular, Figure 3 A series of processes shown in the flowchart is repeatedly executed in a predetermined cycle.

[0052] In step (“step” is hereinafter expressed as “S”) 100, the ECU 12 determines whether the plug is in a connected state. For example, in a case where the connector of the EVSE 70 is connected to the inlet of the vehicle 10, the ECU 12 may determine that the plug is in a connected state. For example, when an ON signal is received from a circuit (not shown) that outputs an ON signal when the connector is connected to the inlet, the ECU 12 may determine that the connector is connected. When it is determined that the plug is in a connected state (Yes in S100), the process is moved to S102.

[0053] In S102, the ECU 12 determines whether the transmission condition is established. For example, the transmission condition may include a first condition that a transmission request is received from the management server 100. Otherwise, the transmission condition includes a second condition that a predefined time has elapsed from a previous transmission timing. Otherwise, the transmission condition may include at least any one of the first condition and the second condition. When it is determined that the transmission condition is established (Yes in S102), the process is moved to S104.

[0054] In S104, the ECU 12 transmits first data including a transmission time (hereinafter expressed as a first time) and information about the SOC of the power storage device 11 (hereinafter expressed as first battery information) to the management server 100 via the DCM server 300 using the communication device 16. The ECU 12 sets the transmission time at which the first data is transmitted to the DCM server 300 to the first time. Thereafter, the process is moved to S106.

[0055] In S106, the ECU 12 transmits information about the SOC of the power storage device 11 (hereinafter expressed as second battery information) to the EVSE 70 using the communication device 16. Thereafter, the process ends. In particular, when it is determined that the transmission condition is not established (No in S102), the process is moved to S108.

[0056] In S108, the ECU 12 transmits the first data to the management server 100 via the DCM server 300 using the communication device 16. After that, the process ends. In particular, when it is determined that the plug is not in the connected state (No in S100), this process ends.

[0057] Next, refer to Figure 4 The processing performed by (the control device 72 of) the EVSE 70 is described. Figure 4 is a flowchart showing an example of processing performed by the EVSE 70 .

[0058] In S200, the control device 72 determines whether the plug is in a connected state. For example, when the connector is connected to the inlet of the vehicle 10, the control device 72 may determine that the plug is in a connected state. For example, 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, the control device 72 may determine that the connector is connected. When it is determined that the plug is in a connected state (Yes in S200), the process is moved to S202.

[0059] In S202, the control device 72 determines whether the second battery information is to be received from the vehicle 10. When it is determined that the second battery information is received from the vehicle 10 (YES in S202), the process is moved to S204.

[0060] In S204, the control device 72 transmits the second data including the transmission time (hereinafter expressed 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 transmitted to the indoor controller 60 to the second time. Thereafter, the process ends. In particular, when it is determined that the plug is not in the connected state (No in S200) or when it is determined that the second battery information is not received from the vehicle 10 (No in S202), the process ends.

[0061] Next, refer to Figure 5 A process executed by the control device 102 of the management server 100 is described. Figure 5 is a flowchart illustrating an example of processing performed by the management server 100 .

[0062] In S300, the control device 102 determines whether the first data is received from the vehicle 10 via the DCM server 300. When it is determined that the first data is received from the vehicle 10 via the DCM server 300 (YES in S300), the process is moved to S302.

[0063] In S302, the control device 102 stores the received first data in the storage device 104. Thereafter, the process moves to S304.

[0064] In S304, the control device 102 determines whether the second data is received from the EVSE 70 via the indoor controller 60. When it is determined that the second data is received via the indoor controller 60 (YES in S304), the process is moved to S306.

[0065] In S306, the control device 102 stores the received second data in the storage device 104. Thereafter, the process moves to S308.

[0066] In S308, the control device 102 determines whether the latest transmission times of the two data received through the two paths (the first communication path and the second communication path) coincide with each other. For example, when the size of the difference between the first time regarding the latest first data and the second time regarding the latest second data does not exceed a threshold value, the control device 102 determines that the latest transmission times coincide with each other. An example of the threshold value is a predefined value, for example, a value such as about several minutes. When it is determined that the latest transmission times coincide with each other (Yes in S308), the process is moved to S310.

[0067] In S310, the control device 102 determines whether the multiple pieces of battery information of the two data received through the two paths are consistent with each other. For example, when the value of the SOC included in the latest first battery information and the value of the SOC included in the latest second battery information are equal values, the control device 102 determines that the multiple pieces of battery information are consistent with each other. When it is determined that the multiple pieces of battery information of the two data received through the two paths are consistent with each other (Yes in S310), the process is moved to S312.

[0068] In S312, the control device 102 performs power control using the first data and the second data. The power control includes power control regarding supply and demand management. When the first data is acquired from the DCM server 300 and thus includes more detailed information than the second data, the control device 102 uses the first data to supplement the second data and uses the first data and the second data to estimate the SOC and the change in SOC with high accuracy. Thus, it is possible to perform supply and demand management of electricity in the power grid according to the supply and demand request from the power company 150. Thereafter, the process ends. On the other hand, when it is determined that the latest transmission times deviate from each other (No in S308), the process is moved to S314.

[0069] In S314, the control device 102 performs power control using the second data. Since this power control is as described above except that the first data is not used, the detailed description is not repeated. After that, the process ends. When it is determined that the plurality of battery information of the two data are inconsistent with each other (No in S310), the process is moved to S316.

[0070] In S316, the control device 102 determines that an abnormality occurs on the power management system 1. The control device 102 determines that an abnormality occurs when the power storage device 11 mounted on the vehicle 10 cannot be used for supply and demand management of power. Thereafter, the process is moved to S318.

[0071] In S318, the control device 102 performs a fault operation. Specifically, the control device 102 sends an execution instruction of a charging process of charging the power storage device 11 mounted on the vehicle 10 as the determination target of the abnormality to a predetermined charging state (e.g., a fully charged state) to the vehicle 10 via the indoor controller 60 and the EVSE 70. Thereafter, the process is moved to S320.

[0072] In S320, the control device 102 performs a reporting process. Specifically, the control device 102 transmits a control command for displaying that the power storage device 11 is to be charged due to an abnormality occurring in the power management system 1 to the terminal 200. Thereafter, the process is ended.

[0073] The operation of the power management system 1 according to the embodiment of the present invention based on the configuration and flowchart as described above is described. For example, when the vehicle 10 is in a state where the plug is in a connected state (Yes in S100) and the transmission condition is established due to reaching a predefined time or the like (Yes in S102), the first data including the first time and the first battery information is transmitted to the management server 100 via the DCM server 300 (S104). In addition, the second battery information is transmitted to the EVSE 70 via the connector and the cable (S106).

[0074] At the EVSE 70 , when the second battery information is received from the vehicle 10 while the plug is in the connected state (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 ).

[0075] In the case where each of the two transmission times and the two battery information is consistent

[0076] When 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). Meanwhile, when 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).

[0077] Then, it is determined whether the first time included in the latest first data and the second time included in the latest second data are consistent with each other (S308). When it is determined that the size of the difference between the first time and the second time does not exceed the threshold value (Yes in S308), it is determined whether the first battery information and the second battery information are consistent with each other (S310). For example, when the value of the SOC included in the first battery information and the value of the SOC included in the second battery information are equal values, it is determined that the first battery information and the second battery information are consistent with each other (Yes in S310). Therefore, power control is performed using the first data and the second data (S312).

[0078] In the case where only two transmission times coincide

[0079] When it is determined that the first time and the second time are consistent with each other because the size of the difference between the first time and the second time does not exceed the threshold value (Yes in S308), it is determined whether the first battery information and the second battery information are consistent with each other (S310). For example, when the value of the SOC included in the first battery information and the value of the SOC included in the second battery information are not equal values, it is determined that the first battery information and the second battery information are inconsistent with each other (No in S310). Then, it is determined that an abnormality occurs on the system (S316), and a fault operation is performed (S318). In this stage, an execution command of a charging process for charging the power storage device 11 of the vehicle 10 is sent to the vehicle 10. Upon receiving the execution command of the charging process, the ECU 12 of the vehicle 10 performs a charging process to charge the power storage device 11. A report process is performed (S320), and character information and / or image information that the power storage device 11 is charged due to an abnormality on the system is displayed on the display device 208 of the terminal 200.

[0080] In case of inconsistency between the two transmission times

[0081] When the first data is not received from the vehicle 10 via the DCM server 300 (No in S300 ) and 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 ).

[0082] Therefore, the size of the difference between the first time of the latest first data and the second time of the latest second data exceeds the threshold, and it is determined that the first time and the second time are deviated from each other (No in S308). As a result, power control is performed using only the second data (S314).

[0083] Figure 6 is a diagram showing an example of an operation corresponding to the presence or absence of coincidence of a transmission time and a plurality of pieces of battery information. Figure 6As shown in , when the latest transmission times are inconsistent with each other, power control using the second data is performed regardless of whether the value of the battery information (SOC) is consistent or inconsistent. On the other hand, when the latest transmission times are consistent with each other and the latest values ​​of the battery information are consistent with each other, power control using the first data and the second data is performed. In addition, when the latest transmission times are consistent with each other and the latest values ​​of the battery information are inconsistent with each other, it is determined that an abnormality has occurred on the power management system 1.

[0084] As described above, according to the power management system 1 of the embodiment of the present invention, when 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 equivalent information is transmitted from the EVSE 70 to the management server 100 deviate from each other, the first data through the first communication path having lower reliability than the second communication path is not used for power control, and therefore, 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 processes information acquired through different communication paths.

[0085] Furthermore, since the system is in a state where information of the power storage device 11 cannot be appropriately acquired when the first time and the second time coincide with each other and the first battery information and the second battery information do not coincide with each other, it is possible to determine with high accuracy that an abnormality has occurred on the power management system 1 .

[0086] Furthermore, since the power storage device 11 is charged when it is determined that an abnormality has occurred on the power management system 1 , the user can quickly use the vehicle 10 .

[0087] In addition, since the charging control is performed due to the abnormality of the power management system, the user of the terminal can recognize that the power storage device is charged. Thus, when the user wants to charge at another time or the like, the charging timing can be adjusted.

[0088] In addition, because when the first time and the second time are consistent with each other and the first battery information and the second battery information are consistent with each other, power control regarding supply and demand management is performed using the first data and the second data, and power control can be performed with high precision by using the first data to supplement the second data, etc.

[0089] Hereinafter, modifications are described.

[0090] Although in the aforementioned embodiment, the following situation has been described as an example, wherein, when an abnormality occurs on the power management system 1, a report is made on the terminal 200 that the power storage device 11 is being charged due to the abnormality of the power management system 1, instead of or in addition to the terminal 200 as the destination of the report, the report may be performed using a display device in the cabin of the vehicle 10.

[0091] In addition, although in the aforementioned embodiment, for example, a case has been described in which the battery information includes the SOC of the power storage device 11 as an example, it may include at least any one of the dischargeable capacity, the chargeable capacity, the current dischargeable electric power, and the current chargeable electric power instead of or in addition to the SOC.

[0092] Furthermore, although the vehicle 10 has been described as an example of a control target of the management server 100 in the aforementioned embodiment, in a case where a plurality of vehicles are control targets, whether the transmission time and a plurality of pieces of battery information are consistent with each other may be determined for each vehicle, and the following operations may be performed according to the determination result. Figure 6 The operations shown in .

[0093] In particular, all or one or some of the aforementioned modifications may be appropriately combined and implemented.

[0094] It should be understood that the embodiments disclosed herein are illustrative in all aspects and not restrictive. The scope of the present invention is shown by the claims rather than the foregoing description, and includes all changes within the spirit and scope of the claims and their equivalents.

Claims

1. A power management system, comprising: A vehicle having an electric storage device mounted on the vehicle; a transmission facility that performs power transmission between a power grid and the power storage device; as well as A server is in communication with the vehicle, wherein The server includes a communication device that performs communication through at least any 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, and a control device that performs power control between the vehicle and the transmission facility, and The control device receiving first data including information about the power storage device over the first communication path, receiving second data including the information over the second communication path, and When a first time at which the first data is transmitted from the vehicle to the server and a second time at which the second data is transmitted from the transmission facility to the server deviate from each other, the power control is performed using the second data.

2. The power management system according to claim 1, wherein: When the first time and the second time coincide with each other and the first data and the second data do not coincide with each other in terms of acquired information, the control device determines that an abnormality has occurred on the power management system.

3. The power management system according to claim 2, wherein: When it is determined that the power management system is abnormal, the control device performs charging control for charging the power storage device using the transmission facility.

4. The power management system according to claim 3, wherein: When the charging control is executed due to an abnormality in the power management system, the control device performs a process of reporting that the charging control is to be executed.

5. The power management system according to claim 1, wherein: When the first time and the second time coincide with each other and the first data and the second data coincide with each other in terms of acquired information, the control device performs the power control using the first data and the second data.

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