US 12,249,849 B2
Wireless power transfer system and method of controlling a wireless power transfer system
Antoine Hombert, Croisilles (FR); Patrick Dehem, Vitry en Artois (FR); Paul-Antoine Gori, Arras (FR); and Nicolas Métivet, Doullens (FR)
Assigned to EnerSys Delaware Inc., Reading, PA (US)
Filed by EnerSys Delaware Inc., Reading, PA (US)
Filed on Sep. 16, 2021, as Appl. No. 17/476,812.
Claims priority of application No. 20306053 (EP), filed on Sep. 18, 2020.
Prior Publication US 2022/0094209 A1, Mar. 24, 2022
Int. Cl. H02J 50/60 (2016.01); B60L 53/124 (2019.01); H02J 7/00 (2006.01); H02J 50/10 (2016.01); B60L 53/36 (2019.01); B60L 53/38 (2019.01); G01S 13/56 (2006.01); H02J 50/90 (2016.01)
CPC H02J 50/60 (2016.02) [B60L 53/124 (2019.02); H02J 7/0029 (2013.01); H02J 50/10 (2016.02); B60L 53/36 (2019.02); B60L 53/38 (2019.02); G01S 13/56 (2013.01); H02J 50/90 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power transfer (WPT) system, comprising:
an electromagnetic induction charger operable to emit electromagnetic radiation into an environment of the charger;
motion sensor equipment operable to generate an output indicating whether or not a moving object is present in the environment; and
a controller configured to:
receive the output from the motion sensor equipment;
determine whether the received output indicates that a moving object is present in a predefined region of the environment; and
in response to a positive determination, prevent the charger from emitting the electromagnetic radiation,
wherein the predefined region extends in a given direction from the charger to an outer boundary that is set at a predefined distance from the charger, and
wherein the controller is configured to modify the predefined distance to thereby modify the predefined region based on an intensity of the electromagnetic radiation emitted by the charger and/or based on a power output of the charger.