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CN-122003795-A - Method for controlling charge and discharge of charge and discharge element and charge and discharge control device for charge and discharge element

CN122003795ACN 122003795 ACN122003795 ACN 122003795ACN-122003795-A

Abstract

The charge/discharge control method of the charge/discharge elements is a charge/discharge control method of a plurality of charge/discharge elements (50, 90) included in a group of power consumption elements (40-70, 90). Each of the 1 st electric vehicles 50 included in the plurality of charge/discharge elements stores the priority level βev selected from the 1 st numerical range A1 as a priority level indicating a degree of priority of charging itself over charging of other charge/discharge elements. Each of the 1 or more storage battery cells 90 included in the plurality of charge/discharge elements stores a priority βst selected from the 2 nd numerical range A2 which is not repeated from the 1 st numerical range A1 but is separated from the 1 st numerical range A1. Each of the plurality of charge and discharge elements receives a command value Δp that is a value based on a difference electric quantity obtained by subtracting the actual electric quantity from a target electric quantity of consumed electric power of the entire group consumed by the electric power consumption element. Each of the plurality of charge/discharge elements autonomously controls the charge/discharge power of its own by the charge/discharge power value Pi, n determined based on the received command value Δp and the priorities βev, βst stored in its own right.

Inventors

  • Wooden interior width allowance
  • MURAI KOSUKE

Assignees

  • 日产自动车株式会社

Dates

Publication Date
20260508
Application Date
20231013

Claims (8)

  1. 1. A charge/discharge control method for a plurality of charge/discharge elements included in a group of power consumption elements, In the charge-discharge control method of the charge-discharge element, The priority level of each of the 1 st electric vehicles included in the plurality of charge/discharge elements is stored as the priority level indicating a degree to which charging of the electric vehicle itself is prioritized over charging of other charge/discharge elements, Each of the plurality of storage battery cells having 1 or more storage battery cells stores the priority selected from the 2 nd numerical range which is not repeated from the 1 st numerical range but is separated from the 1 st numerical range, Each of the plurality of charge/discharge elements autonomously controls its own charge/discharge power by a charge/discharge power value determined based on a command value obtained by subtracting an actual power amount from a target power amount of power consumption consumed by the power consumption elements of the entire group and the priority stored by itself.
  2. 2. The charge-discharge control method of a charge-discharge element according to claim 1, wherein, The 2 nd numerical range is set to a numerical range lower than the 1 st numerical range.
  3. 3. The charge-discharge control method of a charge-discharge element according to claim 2, wherein, The command value for which the charge/discharge power value determined in the electric vehicle stored with the minimum value of the 1 st numerical range as the priority is smaller than the maximum charge power value is determined such that the charge/discharge power value determined in the battery cell stored with the maximum value of the 2 nd numerical range as the priority is 0 or the discharge power value, the minimum value of the 1 st numerical range and the maximum value of the 2 nd numerical range being determined.
  4. 4. The charge-discharge control method of a charge-discharge element according to claim 2, wherein, As a determination formula for determining the charge/discharge power value of each of the plurality of charge/discharge elements based on the received command value and the priority stored in each of the plurality of charge/discharge elements, the following determination formula is used, When the command value is a value obtained by setting the charge/discharge power value of the electric vehicle stored with the minimum value of the 1 st numerical range as the priority to the discharge power value, the charge/discharge power value of the electric vehicle stored with the maximum value of the 1 st numerical range as the priority is set to 0 or the discharge power value, When the command value is a value obtained by setting the charge/discharge power value of the electric vehicle stored with the maximum value of the 1 st numerical range as the priority to a charge power value, the charge/discharge power value of the electric vehicle stored with the minimum value of the 1 st numerical range as the priority is set to 0 or a charge power value.
  5. 5. The charge-discharge control method of a charge-discharge element according to any one of claims 1 to 4, wherein, When the plurality of charge/discharge elements each receive the command value for each control cycle from the start time, the value calculated using control power proportional to the integrated value of the command value received in the past, adjustment power subtracted from the control power for adjusting charge/discharge control corresponding to the priority of the plurality of charge/discharge elements, and adjustment power adjusted from the adjustment power corresponding to the priority stored in the control power and added to the control power is set as the charge/discharge power value of the charge/discharge element.
  6. 6. The charge/discharge control method of a charge/discharge element according to claim 5, wherein, The plurality of charge/discharge elements calculate an average priority of the plurality of charge/discharge elements based on the change in the command value received in the preceding and following control cycles, and calculate a charge/discharge power value of the charge/discharge element by using the adjusted power obtained by multiplying the average priority.
  7. 7. The charge-discharge control method of a charge-discharge element according to any one of claims 1 to 6, wherein, When an exceptional pattern different from a normal pattern in which the priority selected from the 1 st numerical range is stored is selected, each of the electric vehicles having a value equal to or greater than 1 st numerical range autonomously controls the charge/discharge electric power of the electric vehicle based on the priority selected from a3 rd numerical range smaller than the 1 st numerical range and the 2 nd numerical range and the command value received.
  8. 8. A charge/discharge control device for charge/discharge elements, which is provided in correspondence with each of a plurality of charge/discharge elements included in a group of power consumption elements, controls charge/discharge of the charge/discharge elements, The charge/discharge control device comprises: A storage unit that stores a priority indicating a degree of charging of the storage unit itself over charging of the other charge/discharge elements; a receiving unit that receives a command value that is a value based on a difference power amount obtained by subtracting an actual power amount from a target power amount of power consumption consumed by the power consumption elements of the group as a whole, and A control unit that autonomously controls the charge/discharge power of the battery by a charge/discharge power value determined based on the received command value and the priority of the storage unit, The storage unit stores the priority selected from the 1 st numerical range as the priority when the charge/discharge element is an electric vehicle, When the charge/discharge element is a battery cell, the priority selected from the 2 nd numerical range, which is not repeated but separated from the 1 st numerical range, is stored as the priority.

Description

Method for controlling charge and discharge of charge and discharge element and charge and discharge control device for charge and discharge element Technical Field The present invention relates to a charge/discharge control method of a charge/discharge element and a charge/discharge control device of a charge/discharge element. Background Patent document 1 describes a power control system that controls the total power consumption consumed by a plurality of power consumption elements in a group. In this technique, the broadcast transmission element transmits information indicating a value to each power consumption element in the group for each control period of the total power consumption in the group. The indication value is a function of the difference between the current value and the reference value of the total power consumption within the group. Each power consumption element obtains a target value of power consumption corresponding to its own priority on the basis of the received instruction value each time the instruction value is received. The power consumption element that has obtained the target value controls its own power consumption to the obtained target value. Patent document 1 Japanese patent No. 6168528 Disclosure of Invention In the technique of patent document 1, for example, a scenario in which the power consumption element at the time of charging and the power consumption element at the time of discharging coexist is not envisaged. The present invention has been made in view of the above-described circumstances, and an object of the present invention is to control each charge/discharge element to an appropriate charge/discharge state corresponding to a scene based on priority even when there are a charge/discharge element to be charged and a charge/discharge element to be discharged in the same scene. In order to solve the above-described problems, a charge/discharge control method for a charge/discharge element according to one embodiment of the present invention provides a charge/discharge control method for a plurality of charge/discharge elements included in a group of power consumption elements. In this charge/discharge control method, the priority level selected from the 1 st numerical range is stored as the priority level indicating the degree to which the charge of the electric vehicle itself is prioritized over the charge of the other charge/discharge elements, for each of the electric vehicles having 1 or more of the plurality of charge/discharge elements. In addition, the priority level selected from the 2 nd numerical range, which is not repeated from the 1 st numerical range but is separated from the 1 st numerical range, is stored in each of the 1 st or more battery cells included in the plurality of charge/discharge elements. Each of the plurality of charge/discharge elements autonomously controls its own charge/discharge power amount by a charge/discharge power value determined based on a command value obtained by subtracting an actual power amount from a target power amount of power consumption consumed by the power consumption elements of the entire group and a priority stored in the charge/discharge element. ADVANTAGEOUS EFFECTS OF INVENTION According to the present invention, even when there are a charge-discharge element to be charged and a charge-discharge element to be discharged in the same scene, each charge-discharge element can be controlled to an appropriate charge-discharge state corresponding to the scene based on the priority. Drawings Fig. 1 is a diagram showing an example of the overall configuration of a power management system to which a charge/discharge control method of a charge/discharge element according to embodiment 1 of the present invention is applied. Fig. 2 is a graph showing an example of charge/discharge characteristics corresponding to priorities of an electric vehicle battery and a storage battery. Fig. 3 is a graph showing charge/discharge characteristics corresponding to the priority of the electric vehicle battery. Fig. 4 is a graph showing charge/discharge characteristics corresponding to the priority of the battery. Fig. 5 is a flowchart showing an example of a flow of charge/discharge control of an electric vehicle battery and a storage battery in the power management system. Fig. 6 is a graph showing an example of transition of the target electric power and the actual electric power of the electric power consumption system and the charge/discharge electric power of the electric vehicle battery and the storage battery. Fig. 7 is a graph showing an example of transition of the target electric power amount and the actual electric power amount of the electric power consumption of the electric power supply/demand system according to modification 1 of embodiment 1 of the present invention and the charge/discharge electric power of the electric vehicle battery and the storage battery. Fig. 8 is a graph showing an example of transition be