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CN-122000963-A - Charge and discharge management system

CN122000963ACN 122000963 ACN122000963 ACN 122000963ACN-122000963-A

Abstract

The charge/discharge management system compares the number of transmission commands scheduled to be transmitted at each time with the upper limit transmission number, and when it is determined that the number of transmission commands is equal to or less than the upper limit transmission number, the charge/discharge management system maintains the transmission time as planned, and when it is determined that the number of transmission commands is greater than the upper limit transmission number, adjusts the transmission time of the command using the command priority information so that the transmission time of the command having a lower command priority is shifted from the scheduled time to the previous time or the later time.

Inventors

  • YAMAUCHI YUYA

Assignees

  • 丰田自动车株式会社

Dates

Publication Date
20260508
Application Date
20251022
Priority Date
20241107

Claims (5)

  1. 1. A charge and discharge management system for respectively transmitting commands to a plurality of pure electric vehicles and respectively charging and discharging the plurality of pure electric vehicles corresponding to the received commands, the charge and discharge management system is characterized in that, The charge/discharge management system is provided with: Processing circuit The storage device is provided with a storage device, The processing circuit performs the following processing: According to a plan respectively formulated for the plurality of pure electric vehicles, comparing the number of commands scheduled to be transmitted to the plurality of pure electric vehicles at each time, namely, the number of transmitted commands, with the upper limit transmission number which can be transmitted to ensure that no processing delay is generated at the same time, and judging whether the number of transmitted commands is less than or equal to the upper limit transmission number; When it is determined that the number of transmission commands is equal to or less than the upper limit transmission number, the transmission time is held according to the schedule, and when it is determined that the number of transmission commands is greater than the upper limit transmission number, the transmission time of the command is adjusted so that the transmission time of the command with a low command priority is shifted from a predetermined time to a time before or a time after the schedule, using command priority information stored in the storage device, and And sending the corresponding command to each of the plurality of pure electric vehicles according to the adjusted plan.
  2. 2. The charge and discharge management system according to claim 1, wherein, The command priority information includes the content of an event that the command causes the electric vehicle to execute, The event content includes a stop indicating an end of charge or discharge, an end indicating a start of charge or discharge, and a control indicating suspension of charge or discharge during charge or discharge, The command priority related to the event content is set to be lower in order of end, start, and stop.
  3. 3. The charge and discharge management system according to claim 2, wherein, The command priority information includes a required charge amount up to a target state of charge set in each of the plurality of pure electric vehicles, The command priority of the required charge amount is set higher than the event content, and the command priority is set higher the smaller the required charge amount is.
  4. 4. The charge and discharge management system according to claim 3, wherein, In the adjustment process of the transmission time between the commands of the pure electric vehicles of which the required charge amounts are the same level, it is determined which of the command transmission time is moved according to the event content, When the event content of the moving command is a start, the command transmission time is moved from a predetermined time in the schedule to a previous time, and when the event content of the moving command is a stop, the command transmission time is adjusted so as to move the command transmission time from the predetermined time in the schedule to a subsequent time.
  5. 5. The charge and discharge management system according to claim 1, wherein, The command priority information includes information indicating the number of times of adjustment of the transmission timing of the command according to the command priority information for each of the commands, The greater the number of adjustments the higher the command priority is set, The command priority related to the adjustment times is set so that the command transmission time is not adjusted when the adjustment times are equal to or greater than a predetermined value.

Description

Charge and discharge management system Technical Field The present invention relates to a charge/discharge management system. Background Japanese patent laying-open No. 2023-169556 discloses a management apparatus for managing electric power of a micro grid using a plurality of electric power sources (stationary storage battery or electric vehicle (battery ELECTRIC VEHICLE) or the like). The management device stores the information. The information is information that associates a blade electric vehicle (battery ELECTRIC VEHICLE) that receives a power outage during execution of a power outage plan for the micro grid among a plurality of blade electric vehicles (battery ELECTRIC VEHICLE) selected as power resources with a time of the power outage. The management device identifies a battery electric vehicle (battery ELECTRIC VEHICLE) that is powered off at a time during execution of the new power reception plan, based on the stored information. The management device excludes the identified electric vehicle (battery ELECTRIC VEHICLE) from the power resources. Thus, based on past actual records, pure electric vehicles (batteries ELECTRIC VEHICLE) capable of responding to virtual power plants (Virtual Power Plant:VPP) are screened. Disclosure of Invention In japanese patent application laid-open No. 2023-169556, it is determined whether or not desired charge-discharge control can be performed on the power resource, but it is not mentioned whether or not an instruction command can be transmitted to the power resource at an appropriate timing. When large-scale power control such as VPP is performed, command transmission times to a plurality of power resources constituting the micro grid may be repeated. If the command transmission timing is repeated, a processing delay may occur, and the command may not be transmitted at the scheduled timing. As a result, there is a possibility that proper power control matching the demand cannot be achieved from the power market or the like. Hereinafter, means for solving the above-described problems and their operational effects will be described. The charge/discharge management system for solving the above problems includes a processing circuit and a storage device. In the charge/discharge management system, a processing circuit compares the number of commands to be transmitted to a plurality of electric vehicles (battery ELECTRIC VEHICLE) at each time, that is, the number of transmission commands, with the upper limit transmission number that can be transmitted to ensure that no processing delay occurs at the same time, based on a schedule created for each of the plurality of electric vehicles (battery ELECTRIC VEHICLE), and determines whether or not the number of transmission commands is equal to or less than the upper limit transmission number. In the charge/discharge management system, the processing circuit performs processing to maintain the transmission time in a schedule when it is determined that the number of transmission commands is equal to or less than the upper limit transmission number, and to adjust the transmission time of the command so that the transmission time of the command having a lower command priority is shifted from a scheduled time to a previous time or a later time when it is determined that the number of transmission commands is greater than the upper limit transmission number, using command priority information stored in advance in the storage device. In the charge/discharge management system, a processing circuit transmits a corresponding command to each of a plurality of electric vehicles (battery ELECTRIC VEHICLE) according to an adjusted schedule. According to the charge/discharge management system, it is possible to suppress a processing delay caused by repetition of command transmission timings. Drawings 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 denote like elements, and in which: fig. 1 is a diagram showing functional units constituting a charge/discharge management system according to embodiment 1. Fig. 2 is a diagram showing a configuration of a schedule adjustment unit included in the charge/discharge management system of fig. 1. Fig. 3 is an example of a timing chart for explaining an energy management plan created for one electric vehicle (battery ELECTRIC VEHICLE). Fig. 4A is a table collectively representing energy management plans formulated for a plurality of electric vehicles (battery ELECTRIC VEHICLE), showing the energy management plan of each electric vehicle (battery ELECTRIC VEHICLE). Fig. 4B shows a command transmission request at each time. Fig. 5 is a flowchart for explaining a process flow of determining a timing of transmitting a command to each of a plurality of electric vehicles (battery ELECTRIC VEHICLE) in the charge/discharge management system o