Patent ID: 11858371
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 7:
8. A power management method of regulating supply and demand of a power grid by issuing to an electrically powered vehicle including a power storage, a request for charging of the power storage with electric power of the power grid or power feed to the power grid, the power management method comprising:
obtaining a temperature and an SOC of the power storage of each electrically powered vehicle included in a vehicle group;
selecting a target number of electrically powered vehicles from the vehicle group in accordance with a priority predetermined based on the temperature of the power storage and the SOC of the power storage;
issuing the request to each selected electrically powered vehicle;
storing first priority information that defines a priority in selecting an electrically powered vehicle to which the request for the charging is to be issued from the request processor,
wherein
the first priority information defines a priority for each of a plurality of categories set based on the temperature of the power storage and the SOC of the power storage such that a category lower in SOC of the power storage is higher in priority and a category lower in temperature of the power storage is higher in priority, and
in selecting the electrically powered vehicle to which the request for the charging is to be issued from the request processor, selecting the electrically powered vehicle in a descending order of priority from the vehicle group in accordance with the priority for each category defined in the first priority information;
each of the plurality of electrically powered vehicles included in the vehicle group includes a cooling apparatus that cools the power storage,
issuing to each electrically powered vehicle that has been selected, a further request to lower the temperature of the power storage to a prescribed temperature or lower with the cooling apparatus, and
the first priority information defines the priority of a first category, a second category, a third category, and a fourth category in the order of the first category, the second category, the third category, and the fourth category,
in the first category, the SOC of the power storage is lower than a first threshold value and the temperature of the power storage is lower than a second threshold value,
in the second category, the SOC of the power storage is lower than the first threshold value and the temperature of the power storage is higher than the second threshold value,
in the third category, the SOC of the power storage is higher than the first threshold value and the temperature of the power storage is lower than the second threshold value, and
in the fourth category, the SOC of the power storage is higher than the first threshold value and the temperature of the power storage is higher than the second threshold value.