US 12,249,853 B2
Charge-discharge loss reduction method and device utilizing power receiver priority
Kensuke Murai, Kanagawa (JP); Keigo Ikezoe, Kanagawa (JP); and Kenta Suzuki, Kanagawa (JP)
Assigned to NISSAN MOTOR CO., LTD., Yokohama (JP); and RENAULT S.A.S., Boulogne-Billancourt (FR)
Appl. No. 18/276,614
Filed by NISSAN MOTOR CO., LTD., Yokohama (JP); and RENAULT s.a.s., Boulogne-Billancourt (FR)
PCT Filed Feb. 10, 2021, PCT No. PCT/IB2021/000081
§ 371(c)(1), (2) Date Aug. 9, 2023,
PCT Pub. No. WO2022/172043, PCT Pub. Date Aug. 18, 2022.
Prior Publication US 2024/0088677 A1, Mar. 14, 2024
Int. Cl. H02J 7/00 (2006.01); B60L 53/14 (2019.01); B60L 58/12 (2019.01)
CPC H02J 7/0013 (2013.01) [B60L 53/14 (2019.02); B60L 58/12 (2019.02); H02J 2310/48 (2020.01)] 3 Claims
OG exemplary drawing
 
1. A charge-discharge loss reduction method of controlling power received or discharged by power receivers included in a load group, in a power system that supplies electric energy to the load group including the power receivers via a power supply base point, the charge-discharge loss reduction method comprising:
changing a priority of a power receiver based on whether the power receiver is performing charging or discharging, the priority indicating a degree to which power reception of the power receiver takes priority over power reception of another power receiver;
charging or discharging the power receiver with an amount of power, the amount of power determined based on an equation that includes a value of the priority;
acquiring information indicating differential power obtained by subtracting a current value of total transmission power transmitted to an entirety of the load group via the power supply base point, from a maximum value of the total transmission power transmittable to the entirety of the load group via the power supply base point;
upon the information indicating the differential power being a positive value, reducing the priority in a case where the power receiver is performing charging, compared to a case where the power receiver is performing discharging; and
upon the information indicating the differential power being a negative value, reducing the priority in a case where the power receiver is performing discharging, compared to a case where the power receiver is performing charging.