US 12,483,070 B2
Non-contact power transmission system
Jin Katsuya, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jun. 13, 2024, as Appl. No. 18/741,832.
Claims priority of application No. 2023-104429 (JP), filed on Jun. 26, 2023.
Prior Publication US 2024/0429748 A1, Dec. 26, 2024
Int. Cl. H02J 50/12 (2016.01)
CPC H02J 50/12 (2016.02) 2 Claims
OG exemplary drawing
 
1. A non-contact power transmission system comprising:
a power reception unit that has a coil for receiving AC power transmitted in a non-contact manner from a power transmission device;
a power conversion unit that has a plurality of switching elements and a plurality of rectification elements connected to the coil and converts the AC power received by the power reception unit into DC power;
a current sensor that detects a current flowing between the power reception unit and the power conversion unit; and
a control device that controls switching operations of the plurality of switching elements on the basis of a detection value of the current output from the current sensor,
wherein the control device causes the power conversion unit to execute a synchronous rectification operation of rectifying the AC power by synchronously driving the plurality of switching elements in accordance with a phase of the current when the detection value of the current is equal to or larger than a predetermined threshold; and
wherein the control device prohibits the synchronous rectification operation and permits an operation of rectifying the AC power using the plurality of rectification elements when the detection value of the current is smaller than the predetermined threshold.