US 12,463,467 B2
Contactless electric power transmission system that corrects a request frequency of electric power transmission
Jin Katsuya, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2024, as Appl. No. 18/583,909.
Claims priority of application No. 2023-044194 (JP), filed on Mar. 20, 2023.
Prior Publication US 2024/0322600 A1, Sep. 26, 2024
Int. Cl. H02J 50/12 (2016.01); H02J 7/00 (2006.01); H02J 50/05 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/12 (2016.02) [H02J 7/007194 (2020.01); H02J 50/05 (2016.02); H02J 50/80 (2016.02); H02J 2310/48 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A contactless electric power transmission system, comprising:
an electric power reception portion having
a coil that receives AC electric power transmitted in a contactless manner from an electric power transmission side coil of an electric power transmission device,
a resonant capacitor connected in series to the coil, and
a magnetic member provided for the coil;
an electric power conversion portion that converts the AC electric power received by the electric power reception portion into DC electric power; and
a control device that controls an operation of the electric power conversion portion,
wherein the control device comprises:
a first temperature acquisition portion that acquires a temperature of the coil;
a second temperature acquisition portion that acquires a temperature of the capacitor;
a third temperature acquisition portion that acquires a temperature of the magnetic member; and
a correction portion that corrects a request frequency of electric power transmission by the electric power transmission device based on the temperatures acquired by the first temperature acquisition portion, the second temperature acquisition portion, and the third temperature acquisition portion,
wherein the correction portion corrects at least one of a self-inductance of the coil, a resistance value of the electric power reception portion, a capacitance of the capacitor, and a mutual inductance between the electric power transmission side coil and the coil based on the temperatures.