US 12,257,913 B2
Method for controlling power transmitting device, method for detecting foreign object, and power transmitting device in wireless power transmission system
Hiroyuki Matsuo, Osaka (JP); and Tetsuro Sawai, Osaka (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on May 24, 2023, as Appl. No. 18/323,305.
Application 18/323,305 is a continuation of application No. 17/494,411, filed on Oct. 5, 2021, granted, now 11,697,351.
Application 17/494,411 is a continuation of application No. 16/424,554, filed on May 29, 2019, granted, now 11,180,038, issued on Nov. 23, 2021.
Application 16/424,554 is a continuation of application No. PCT/JP2016/088837, filed on Dec. 27, 2016.
Prior Publication US 2023/0294529 A1, Sep. 21, 2023
Int. Cl. H02J 7/00 (2006.01); B60L 50/50 (2019.01); B60L 53/124 (2019.01); B60M 7/00 (2006.01); H02J 50/10 (2016.01); H02J 50/12 (2016.01); H02J 50/60 (2016.01); H02J 50/90 (2016.01); H02J 50/80 (2016.01)
CPC B60L 53/124 (2019.02) [B60L 50/50 (2019.02); B60M 7/00 (2013.01); H02J 7/00 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H02J 50/60 (2016.02); H02J 50/90 (2016.02); H02J 50/80 (2016.02); Y02T 10/70 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A power transmitting device comprising:
a power transmitting coil for providing output power to a power receiving coil;
a thermal sensor that detects a temperature around the power transmitting coil; and
a power transmission control circuit that controls the power transmitting device,
wherein the power transmission control circuit performs operations including
causing the power transmitting coil to provide first output power,
causing the power transmitting coil to provide second output power to the power receiving coil for charging a battery connected to the power receiving coil,
and
causing, if the detected temperature is equal to or higher than a threshold due to a presence of a metal foreign object, the power transmitting coil to reduce a level of the output power or stop the output power, and
wherein the level of the first output power is lower than the level of the second output power, and
the first output power is provided before an object including the power receiving coil overlaps the power transmitting coil.