JP2012196067A - Battery charge-discharge system and energy management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide relief to a vehicle connected to a broken controller by appropriately guiding the vehicles connected to the respective controllers when a part of the controllers breaks down in the battery charge-discharge system containing a plurality of controllers which charge and discharge of batteries of electric vehicles.SOLUTION: A factory 10 comprises: an FEMS 13 which monitors and controls a plurality of charge-discharge controllers CR1 to CR5; a storage device 14 which associates vehicles EV1 to EV4 connected to the charge-discharge controllers CR 1 - CR 5 with communication addresses of users U1 - U4 to store them; and a communication server 15. When an abnormality is detected in a part of the charge-discharge controllers CR1 to CR5, the FEMS 13 transmits a notice to urge movement for normal charge-discharge controllers which are not in use to the communication address of the user of the vehicle connected to the charge-discharge controller having the abnormality.

Description

  The present invention relates to a charge / discharge system for a battery of an electric vehicle, and more particularly, to an energy management system for managing charge / discharge of a battery of a plurality of electric vehicles.

  In recent years, the development of a next-generation power network called “smart grid” that incorporates automatic control of power supply and demand in the power network has attracted attention. In the smart grid, power demand and supply can be optimized by controlling the flow of power in the power network not only from the supply side but also from the demand side.

  For example, batteries (storage batteries) of electric vehicles owned by households (for example, electric vehicles (EV) and plug-in hybrid vehicles (PHV)) are smoothed by reducing the peak of power demand. It can be used as a buffer for That is, the power demand peak is reduced by using the electric power of the battery of the electric vehicle charged in the time zone when the power demand is small at the time of the peak power demand. In general, since electricity charges are set cheaply at times such as midnight when electricity demand is low, the electricity charges of each household can be saved. The smart grid automatically controls such a power flow.

  The flow of electric power in the smart grid is managed by an energy management system (EMS) installed in each consumer. EMS puts power generation facilities, load facilities, power storage facilities, and the like of customers under control, and controls them so that power demand is smoothed, thereby reducing the amount of power purchased from the power company.

  The smart grid mechanism is expected to be used not only by ordinary households but also by large-scale consumers such as factories and buildings (for example, Patent Document 1 and Non-Patent Document 1). For example, EMS (Factory Energy Management System; FEMS) for factories optimizes the power supply and demand of factories by quantitatively analyzing changes in the energy amount of production equipment in the factories, focusing on the production amount. Can be achieved.

JP 2008-67418 A

Mitsubishi Corporation-Press Room-"Development of Smart Grid Related System Using Electric Vehicle", [online], December 2, 2010, [Search February 25, 2011], Internet <URL: http: / /www.mitsubishicorp.com/jp/en/pr/archive/2010/html/0000011451.html>

  Even in a large-scale consumer such as a factory or a building, the battery of the electric vehicle can be used as a power storage device (buffer) as in the case of a home. In particular, in factories, since many vehicles such as employee commuting vehicles come and go, it can be expected that batteries of a plurality of electric vehicles are combined to be used as a large-capacity electricity storage device. For this purpose, it is necessary to install a plurality of charge / discharge controllers for charging / discharging the battery in the factory, and the FEMS must monitor and control the plurality of charge / discharge controllers.

  For example, a system in which a plurality of charge / discharge controllers monitored and controlled by FEMS are arranged in a factory, and an employee's commuting vehicle is connected to each of them is conceivable. In this system, the battery of each vehicle can be used as a power storage device in a factory during the working hours of employees. Meanwhile, charging / discharging of the battery of each vehicle is performed under the control of FEMS. On the other hand, since each vehicle is also used for returning to the employee, the FEMS needs to ensure that the remaining battery level of each vehicle exceeds the amount of electric power that the employee can return to when the working hours are over.

  However, it is also conceivable that some charge / discharge controllers fail for some reason and the battery cannot be charged / discharged normally. For example, when a failure occurs in the charge / discharge controller after power is supplied from the battery to the factory under the control of the FEMS, there is a possibility that the vehicle connected to the controller does not have enough battery power to return home. There is a possibility that the user of the vehicle cannot go home.

  The present invention has been made to solve the above problems, and in a charge / discharge system including a plurality of controllers for charging / discharging a battery of an electric vehicle, when some of the controllers fail, each controller is An object is to appropriately guide the connected vehicle and to rescue the vehicle connected to the failed controller.

  A battery charge / discharge system according to the present invention includes a plurality of charge / discharge controllers that charge / discharge a battery of an electric vehicle, an EMS (energy management system) that monitors and controls the plurality of charge / discharge controllers, and the plurality of charge / discharges. A storage device that associates and stores a vehicle connected to a controller and a communication address of the user, and a communication server for the EMS to transmit a predetermined notification to the communication address of each user, the EMS The presence / absence of abnormality in the plurality of charge / discharge controllers and the connected vehicle are monitored, and when some abnormality of the plurality of charge / discharge controllers is detected, the communication address of the user of the vehicle connected to the abnormal charge / discharge controller is displayed. , Which sends a notification to move to a normal charge / discharge controller that is not in use

  According to the present invention, when an abnormality occurs in some of the plurality of charge / discharge controllers, the vehicle connected thereto is guided to the normal charge / discharge controller and rescued. Therefore, insufficient charging of the vehicle can be prevented, and the user's use of the vehicle can be prevented from being hindered.

It is a block diagram of the charging / discharging system which concerns on embodiment of this invention. It is a functional block diagram which shows the structure of the vehicle guidance means with which FEMS which concerns on Embodiment 1 of this invention is provided. It is a flowchart which shows operation | movement of the vehicle guidance means of FEMS which concerns on Embodiment 1 of this invention. It is a figure for demonstrating operation | movement of FEMS when a charge / discharge controller has space. It is a figure for demonstrating operation | movement of FEMS when there is no vacancy in a charge / discharge controller.

<Embodiment 1>
FIG. 1 is a configuration diagram of a charge / discharge system according to an embodiment of the present invention. In the figure, a thick line between blocks indicates a power line, and a thin line indicates a communication line.

  The factory 10 includes an in-factory load 11 such as an electric device on the production line, lighting and air conditioning equipment, a photovoltaic power generation system 12 which is a power generation facility, charge / discharge controllers CR1 to CR5 which charge / discharge the battery, and flow of electric power thereof. FEMS 13 is provided. In addition, the FEMS 13 of the present embodiment is connected to a communication server 15 for the FEMS 13 to communicate with the outside, and the communication server 15 is connected to a storage device 14 in which predetermined information is stored. The storage device 14 may be built in the FEMS 13 or the communication server 15.

  The factory 10 is supplied with power from the power company 20. The FEMS 13 supplies the power generated by the solar power generation system 12 and the power stored in the batteries connected to the charge / discharge controllers CR1 to CR5 to the in-plant load 11 or surplus generated by the solar power generation system 12. Power from the power company 20 is stored in a battery connected to the charge / discharge controllers CR1 to CR5 to smooth the power demand of the factory 10 and purchased from the power company 20. Work to reduce power.

  The FEMS 13 can communicate with the in-factory load 11, the photovoltaic power generation system 12, and the charge / discharge controllers CR1 to CR5, and monitors and controls their operations. In FIG. 1, the communication is shown as LAN (Local Area Network) communication using a dedicated communication line. However, for example, PLC (Power Line Communications) using a power line as a communication line may be used.

  In addition, the charge / discharge controllers CR1 to CR5 have a communication function with devices (for example, vehicles such as EVs and PHVs and battery units) connected thereto. When a vehicle such as an EV or a PHV is connected, the charge / discharge controllers CR1 to CR5 receive information on the charge / discharge of the battery (battery remaining amount, etc.) from the vehicle, as well as the travel history and travel plan from the in-vehicle car navigation system. Etc. can also be obtained. The FEMS 13 can obtain these pieces of information through the charge / discharge controllers CR1 to CR5, and controls charge / discharge of the battery of each vehicle based on the information.

  The communication method between the charge / discharge controllers CR1 to CR5 and the devices connected thereto may be arbitrary. For example, LAN communication or CAN (Controller Area Network) communication using a communication line in a connection cable between a charge controller and a device, PLC using a power line in the connection cable as a communication line, or short-range wireless communication may be used.

  Here, among the charge / discharge controllers CR1 to CR5 shown in FIG. 1, CR1 to CR4 are deployed in the parking lot for the purpose of charging and discharging the battery of the commuter vehicle of the employee of the factory 10, and CR5 is Assume that the battery BT provided in the factory 10 is charged and discharged exclusively. That is, the charge / discharge controllers CR1 to CR4 are connected to the vehicle only during the working hours of the employees, but the battery BT is always connected to the charge / discharge controller CR5.

  Since the present invention takes measures when an abnormality (failure) occurs in the charge / discharge controller to which the vehicle is connected, in the following description, the charge / discharge controller CR5 to which the battery BT is always connected will be described. exclude.

  In the present embodiment, any of the vehicles EV1 to EV4 used by the employees of the factory 10 for commuting is connected to the charge / discharge controllers CR1 to CR4. In FIG. 1, the vehicles EV1, EV2, EV3, EV4 are connected to the charge / discharge controllers CR1, CR2, CR3, CR4, respectively, but any vehicle may be connected to which charge / discharge controller. The users (employees) of the vehicles EV1, EV2, EV3, EV4 are defined as users U1, U2, U3, U4, respectively.

  The FEMS 13 can use the batteries of the vehicles EV1 to EV4 as power storage devices during the working hours of the users U1 to U4, and during that time, charging and discharging of the batteries of the vehicles EV1 to EV4 are performed under the control of the FEMS13. Further, the FEMS 13 determines the remaining battery levels of the vehicles EV1 to EV4 at the time when the work hours of the users U1 to U4 end (when leaving the office), and the remaining battery levels (required remaining battery capacity) required by the users U1 to U4 when leaving the office. That's it.

  Each of the charge / discharge controllers CR1 to CR4 can identify a vehicle connected to itself from an identifier (ID) such as a chassis number. In the storage device 14, the IDs of the vehicles EV <b> 1 to EV <b> 4 and the information on the necessary battery remaining amount are registered in association with the IDs (employee numbers, etc.) of the users U <b> 1 to U <b> 4. The FEMS 13 can secure the necessary battery remaining amount of the vehicles EV1 to EV4 by controlling the charge / discharge controllers CR1 to CR4 based on these pieces of information.

  As an example of the necessary battery remaining amount, it is typical that the amount of power required for traveling from the factory 10 to the homes of the users U1 to U4 is set. Further, the required battery remaining amount may be an electric energy [kWh] or a ratio [%] to the battery capacity.

  Further, in the present embodiment, the communication addresses (email addresses, IP addresses, telephone numbers, etc.) of the users U1 to U4 are also registered in the storage device 14 in association with the IDs of the users U1 to U4. The communication addresses of the users U1 to U4 are addresses that the FEMS 13 can transmit a predetermined notification through the communication server 15 and are addresses of portable terminals (mobile phones and PDAs (Personal Digital Assistants)) possessed by the users U1 to U4. It is desirable.

  The registered contents of the storage device 14 can be changed by the users U1 to U4 through communication through the charge / discharge controllers CR1 to CR4 or the communication server 15.

  FEMS13 which concerns on this Embodiment is normal, when the abnormality (failure) of charging / discharging controller CR1-CR4 generate | occur | produces and the normal charging / discharging controller is no longer performed, the vehicle connected to the charging / discharging controller with abnormality is normal. Vehicle guidance means for guiding to a discharge controller not connected to another vehicle is provided.

  FIG. 2 is a functional block diagram of vehicle guidance means included in the FEMS 13. Usually, since the FEMS 13 is a computer, the vehicle guiding means can be realized by a program, and each block thereof can be realized by a subroutine of the program.

  As shown in FIG. 2, the vehicle guiding unit 130 includes an abnormal state detection unit 131, a vehicle connection state detection unit 132, a necessary amount arrival determination unit 133, a difference calculation unit 134, a notification target determination unit 135, a charge instruction unit 136, and a notification instruction unit. 137.

  The abnormal state detection unit 131 monitors whether the charge / discharge controllers CR1 to CR4 are abnormal by communicating with the charge / discharge controllers CR1 to CR4 through the LAN. Each of the charge / discharge controllers CR1 to CR4 has a built-in measuring instrument such as an ammeter or a voltmeter, and can determine whether or not its own charge / discharge operation is normally performed. For example, the charge / discharge controllers CR1 to CR4 may transmit an error signal when an abnormality occurs, and the abnormal state detection unit 131 may detect the error, or the charge / discharge controllers CR1 to CR4 always transmit a signal indicating normality. It may be configured that the abnormal state detection unit 131 recognizes the occurrence of an abnormality when the interruption occurs.

  Or the structure which the abnormality condition detection part 131 monitors the measuring device of charging / discharging controller CR1-CR4, and detects abnormality itself may be sufficient. Further, the abnormality of the charge / discharge controllers CR1 to CR4 detected by the abnormal state detection unit 131 may include a communication abnormality in addition to the abnormality of the charge / discharge operation.

  The vehicle connection status detection unit 132 monitors the connection status of the charge / discharge controllers CR1 to CR4 through communication with the charge / discharge controllers CR1 to CR4. That is, it is detected whether or not each of the charge / discharge controllers CR1 to CR4 is in use (connected), which vehicle or device is connected, and the like.

  The necessary amount arrival determination unit 133 acquires the battery remaining amount of each vehicle connected to the charge / discharge controllers CR1 to CR4 through communication with the charge / discharge controllers CR1 to CR4, and from the storage device 14 via the communication server 15, The required amount of battery remaining amount (required battery remaining amount) of each vehicle is acquired. Then, the two are compared to determine whether or not the remaining battery capacity of each vehicle has reached the required amount.

  The difference calculation unit 134 acquires the current battery remaining amount and the necessary battery remaining amount of each vehicle connected to the charge / discharge controllers CR <b> 1 to CR <b> 4 similarly to the necessary amount arrival determination unit 133, and calculates the difference between the two. Based on the calculated difference, it is determined which of the vehicles whose remaining battery level does not reach the required amount, which vehicle's remaining battery level is close to the required amount (whether the required amount is reached in a short time).

  The vehicle guidance unit 130 transmits a predetermined notification to a communication address of a predetermined vehicle user when any abnormality of the charge / discharge controllers CR1 to CR4 occurs by the abnormal state detection unit 131, but the notification target determination unit 135 determines the notification target (transmission destination) and the notification content based on the output results of the vehicle connection status detection unit 132 and the necessary amount arrival determination unit 133. Further, the notification instruction unit 137 controls the communication server 15 to transmit the notification content determined by the notification target determination unit 135 to the notification target.

  If an abnormality occurs in any of the charge / discharge controllers CR1 to CR4, and there is a vacancy in the normal charge / discharge controller, the notification target determination unit 135 and the notification instruction unit 137 are connected to the abnormal charge / discharge controller. The user is notified of a notification (movement instruction) for instructing movement to an available normal charge / discharge controller. Also, if there is no vacant charge / discharge controller, a notification (delivery) is given to the vehicle user who has connected to the normal charge / discharge controller and the remaining battery level has reached the required amount (moving to another location). Send instructions).

  However, there are cases where there is no vacant normal charge / discharge controller and no vehicle has reached the required amount. In this case, based on the determination result of the difference calculation unit 134, the charging instruction unit 136 is connected to a normal charge / discharge controller and preferentially charges the battery of the vehicle whose battery remaining is relatively close to the required amount. As a result, if there is a vehicle that has reached the required battery level, the user of the vehicle is included in the target for transmitting the surrender instruction.

  FIG. 3 is a flowchart showing the operation of the vehicle guidance means 130 provided in the FEMS 13. Hereinafter, the operation of the battery charge / discharge system according to the present embodiment will be described with reference to FIG.

  First, as shown in FIG. 4, it is assumed that the vehicles EV1, EV2, EV3 are connected to the charge / discharge controllers CR1, CR2, CR3, respectively, and the charge / discharge controller CR4 is vacant (not used). Assume that an abnormality has occurred in the charge / discharge controller CR1 in this state (the charge / discharge controllers CR2 to CR4 are normal).

  When abnormality of charge / discharge controller CR1 is detected by abnormal state detection unit 131 of vehicle guiding means 130 (Yes in step S1), vehicle connection state detection unit 132 has a free space in normal charge / discharge controllers CR2 to CR4. (Step S2). Here, since the charge / discharge controller CR4 is vacant (Yes in step S2), the charge instruction unit 136 controls the communication server 15 via the notification instruction unit 137, and the vehicle EV1 connected to the abnormal charge / discharge controller CR1. A notification (movement instruction) for instructing movement of the vehicle EV1 to the charge / discharge controller CR4 is transmitted to the communication address of the user U1 (step S3).

  Receiving the movement instruction, the user U1 moves the vehicle EV1 to the charge / discharge controller CR4 and connects the vehicle EV1 to the charge / discharge controller CR4. Thus, the vehicle EV1 is relieved from the abnormality of the charge / discharge controller CR1, and the battery is normally charged / discharged under the control of the FEMS 13. Therefore, when the user U1 leaves the company, the vehicle EV1 reaches the necessary remaining battery level, and a situation in which the user U1 cannot return home due to insufficient charging of the vehicle EV1 is avoided.

  Next, as shown in FIG. 1, it is assumed that the vehicles EV1, EV2, EV3, EV4 are connected to the charge / discharge controllers CR1, CR2, CR3, and CR4, respectively, and the charge / discharge controllers CR1 to CR4 have no vacancy. To do. Assume that an abnormality has occurred in the charge / discharge controller CR1 in this state (the charge / discharge controllers CR2 to CR4 are normal).

  Further, here, as shown in the table of FIG. 5, it is assumed that the necessary battery remaining amount of each of the vehicles EV1 to EV4 is 8 kWh, and the vehicles EV1, EV2, EV3, EV4 when the abnormality occurs in the charge / discharge controller CR1. Are assumed to be 3 kWh, 10 kWh, 5 kWh, and 7 kWh, respectively. In addition, the normal charge / discharge controllers CR2 to CR4 are assumed to discharge the batteries of the vehicles EV2 to EV4.

  When abnormality of charge / discharge controller CR1 is detected by abnormal state detection unit 131 of vehicle guiding means 130 (Yes in step S1), whether or not charge / discharge controllers CR1 to CR4 are free by vehicle connection state detection unit 132 is determined. Is determined (step S2). Here, there is no space in the charge / discharge controllers CR1 to CR4 (No in step S2). In that case, the required amount arrival determination unit 133 determines whether any of the vehicles EV2 to EV4 connected to the normal charge / discharge controllers CR2 to CR4 has reached the required battery level (step S4).

  Here, as shown in FIG. 5, the vehicle EV2 connected to the charge / discharge controller CR2 has reached the required remaining battery level. That is, even if charging / discharging of the vehicle EV2 is interrupted at this time, the user U2 is not in trouble when returning home. Accordingly, the charging instruction unit 136 controls the communication server 15 via the notification instruction unit 137, and transmits a notification (an instruction to deliver) of an instruction to move the vehicle EV2 to another location and give up the charge / discharge controller CR2 to the user U2. To do. However, this surrender instruction is transmitted only to those who have not been notified among the users of the vehicle that have reached the necessary battery level so as not to be repeatedly transmitted to the users of the same vehicle (steps S5 and S6).

  After that, the process returns to step S1 and the above operations are repeated. However, when the user U2 who has received the surrender instruction moves the vehicle EV2 and the charge / discharge controller CR2 becomes empty (Yes in step S2), the abnormal charging is performed. A movement instruction for moving the vehicle EV1 to the charge / discharge controller CR2 is notified to the communication address of the user U1 of the vehicle EV1 connected to the discharge controller CR1 (step S3). Receiving the movement instruction, the user U1 is rescued by moving the vehicle EV1 to the charge / discharge controller CR2 and connecting the vehicle EV1 to the vehicle EV1, thereby avoiding insufficient charging of the vehicle EV1.

  However, if the user U2 does not move the vehicle EV2 (Yes in step S5) or no vehicle has reached the required battery amount (No in step S4) even if the delivery instruction is notified, the notification target determination unit 135 attempts to create a new object that can be notified of a surrender instruction. That is, the vehicle battery that has not reached the required battery level is charged to reach the required battery level.

  In this case, the difference calculation unit 134 calculates the difference between the current battery remaining amount and the necessary battery remaining amount for each vehicle that is connected to a normal charge / discharge controller and has not reached the necessary battery remaining amount. The charge instructing unit 136 preferentially determines the one with the smallest difference (the one that can reach the required remaining battery level first) as a charge target (step S7), and controls the charge / discharge controller to perform the charge. (Step S8).

  In the example of FIG. 5, when the vehicle EV2 does not respond to the surrender instruction, the difference between the current battery remaining amount and the necessary battery remaining amount is calculated for the vehicle EV3 and the vehicle EV4, and the difference in the vehicle EV3 is 3 kWh. Since the difference is 1 kWh, the charging instruction unit 136 determines the vehicle EV4 to be charged. The charge / discharge controller CR4 is discharging the battery of the vehicle EV4, but is switched to a charging operation by the control of the charge instruction unit 136, and charging of the battery of the vehicle EV4 is started.

  Thereafter, the process returns to step S1, but when the vehicle EV4 reaches the required remaining battery level, the user U4 becomes a target for sending a surrender instruction (No in step S5), and a surrender instruction is sent to the user U4 (step S6).

  When the user U4 who has received the surrender instruction moves the vehicle EV4 and the charge / discharge controller CR4 becomes empty (Yes in step S2), the communication address of the user U1 of the vehicle EV1 connected to the abnormal charge / discharge controller CR1 is set. Then, a movement instruction for moving the vehicle EV1 to the charge / discharge controller CR2 is notified (step S3). Receiving the movement instruction, the user U1 is rescued by moving the vehicle EV1 to the charge / discharge controller CR4 and connecting the vehicle EV1 to the vehicle EV1, thereby avoiding insufficient charging of the vehicle EV1.

  As described above, according to the present embodiment, even if an abnormality occurs in some of the plurality of charge / discharge controllers, the vehicle connected to the abnormal charge / discharge controller is guided to the normal charge / discharge controller. Can be saved, and it is possible to avoid insufficient charging of the battery of the vehicle. In addition, when there is no vacancy in the normal charge / discharge controller, the user of the vehicle connected thereto is notified of the surrender instruction of the charge / discharge controller, but the notification target is limited to the vehicle user who has reached the required remaining battery level. Is done. Therefore, it is possible to avoid a vehicle that has received a surrender instruction from being insufficiently charged.

<Embodiment 2>
In the first embodiment, when the user who receives the surrender instruction does not respond to it, or when there is no vacant charge / discharge controller and no vehicle has reached the required battery amount, the remaining battery level is relatively close to the required amount. The vehicle is preferentially charged, and a notification target for a surrender instruction is newly created. However, there may be a case where the battery level of all the vehicles is low. In this case, it takes a long time until the vehicle to be charged reaches the required battery level.

  In the first embodiment, the difference in the working hours of the users of each vehicle is not taken into consideration, but the working hours are different for each user in a factory where shift work or overnight work is introduced, for example. In such a case, the user of the vehicle having a relatively long time until the next use time (leaving time) (that is, the user of the vehicle who does not have to rush to charge the battery) is notified of the surrendering instruction, and the battery charging of the vehicle is performed. It is also effective to postpone.

  That is, the use schedule of the vehicles EV1 to EV4 is also stored in the storage device 14, and the notification target determination unit 135 of the vehicle guiding means 130 is connected to a normal charge / discharge controller in parallel with steps S4 to S8 in FIG. In addition, a user who has a relatively long time until the next use time may be notified of a surrender instruction.

  If the user who has received this surrender instruction moves the vehicle and the charge / discharge controller is free, in step S3 in FIG. 3, the user of the vehicle connected to the charge / discharge controller in which an abnormality has occurred is connected to the normal charge / discharge controller. A travel instruction is sent and the vehicle is rescued.

  It should be noted that the vehicle that has left the charge / discharge controller according to this delivery instruction (the vehicle that has been charged later) has not reached the required remaining battery level. Therefore, after that, it is preferable that the vehicle guiding unit 130 continues to execute the operation of FIG. 3 in order to rescue the vehicle that has been charged later. In that case, the notification destination of the movement instruction in step S3 is changed to the user of the vehicle who has postponed charging.

  In the above description, the FEMS has been described as an example of the EMS. However, the present invention is applicable to any EMS that monitors and controls a plurality of charge / discharge controllers. For example, a home EMS (Home Energy Management System; It can also be applied to HEMS) and building EMS (Building Energy Management System; BEMS).

  10 factory, 11 factory load, 12 photovoltaic power generation system, 13 FEMS, 14 storage device, 15 communication server, BT battery, CR1 to CR5 charge / discharge controller, 130 vehicle guidance means, 131 abnormal state detection unit, 132 vehicle connection status Detection unit, 133 necessary amount arrival determination unit, 134 difference calculation unit.

Claims (8)

A plurality of charge / discharge controllers for charging / discharging the battery of the electric vehicle;
EMS (energy management system) for monitoring and controlling the plurality of charge / discharge controllers;
A storage device that associates and stores a vehicle connected to the plurality of charge / discharge controllers and a communication address of the user;
The EMS comprises a communication server for transmitting a predetermined notification to the communication address of each user,
The EMS is
Monitoring the presence or absence of abnormality in the plurality of charge / discharge controllers and the connected vehicle;
When some abnormality of the plurality of charge / discharge controllers is detected, a notification that prompts the user to move to a normal charge / discharge controller that is not in use is transmitted to the communication address of the user of the vehicle connected to the abnormal charge / discharge controller A battery charge / discharge system. The battery charge / discharge system according to claim 1,
The storage device further stores a required amount of battery remaining for each vehicle,
The EMS is
Further monitoring the remaining battery power of each vehicle connected to the plurality of charge / discharge controllers,
When some abnormalities of the plurality of charge / discharge controllers are detected and there is no normal charge / discharge controller that is not in use, communication of a vehicle user who has connected to the normal charge / discharge controller and the remaining battery level has reached the required amount A battery charging / discharging system, wherein a notification prompting the surrender of a charge / discharge controller is transmitted to an address. The battery charge / discharge system according to claim 2,
The EMS is
If there is no normal charge / discharge controller that is not in use and a normal charge / discharge controller is connected to the normal charge / discharge controller and the remaining battery level has reached the required amount, there is no abnormality. A battery charge / discharge system which is connected to a charge / discharge controller and preferentially charges a vehicle battery whose remaining battery capacity is relatively close to a required amount. The battery charge / discharge system according to claim 1,
The storage device further stores a use schedule of each vehicle,
The EMS is
When some abnormality of the plurality of charge / discharge controllers is detected and there is no normal charge / discharge controller that is not in use, a vehicle user who is connected to the normal charge / discharge controller and takes a relatively long time until the next use time In addition, a battery charge / discharge system is characterized by transmitting a notification prompting the surrender of the charge / discharge controller. An energy management system that monitors and controls a plurality of charge / discharge controllers that charge and discharge a battery of an electric vehicle,
An abnormal state detector for monitoring the presence or absence of an abnormality in the plurality of charge / discharge controllers;
A vehicle connection status detection unit for identifying a vehicle connected to the plurality of charge / discharge controllers;
A storage device that associates and stores a vehicle connected to the plurality of charge / discharge controllers and a communication address of the user;
A notification instruction unit that transmits a predetermined notification to the communication address of each user,
When some abnormality of the plurality of charge / discharge controllers is detected by the abnormal state detection unit, the notification instruction unit is connected to an abnormal charge / discharge controller based on the identification result of the vehicle connection state detection unit. The energy management system characterized by transmitting the notification which prompts the movement to the normal charge / discharge controller which is not in use to the communication address of the user of the vehicle. An energy management system according to claim 5,
The storage device further stores a required amount of battery remaining for each vehicle,
The energy management system
A required amount arrival determination unit for determining whether or not the remaining battery capacity of each vehicle connected to the plurality of charge / discharge controllers has reached a required amount;
When the abnormal state detection unit detects some abnormality of the plurality of charge / discharge controllers and there is no normal charge / discharge controller that is not in use, the notification instruction unit displays the determination result of the necessary amount arrival determination unit. Based on this, the energy management system is characterized by transmitting a notification prompting the surrender of the charge / discharge controller to the communication address of the user of the vehicle connected to a normal charge / discharge controller and having a remaining battery level. An energy management system according to claim 6,
A difference calculation unit for calculating a difference between a remaining battery level of each vehicle connected to the plurality of charge / discharge controllers and a required remaining battery level;
A charge instructing unit for instructing charging of a vehicle battery connected to a predetermined charge / discharge controller;
Some abnormalities of the plurality of charge / discharge controllers are detected by the abnormal state detection unit, and a normal charge / discharge controller that is not in use is connected to a normal charge / discharge controller, and a vehicle in which the remaining battery level reaches a required amount When not present, the charging instruction unit preferentially charges a battery of a vehicle that is connected to a normal charge / discharge controller and whose battery remaining amount is relatively close to a required amount based on a calculation result of the difference calculation unit. Energy management system. An energy management system according to claim 5,
The storage device further stores a use schedule of each vehicle,
When the abnormal state detection unit detects some abnormality of the plurality of charge / discharge controllers and there is no normal charge / discharge controller that is not in use, the notification instruction unit connects to the normal charge / discharge controller and An energy management system characterized by transmitting a notification prompting the surrender of a charge / discharge controller to a user of a vehicle having a relatively long time until use.

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