US 12,005,901 B2
Vehicle including electric motor and method of controlling brake lamp for the same
Hui Un Son, Suwon-si (KR); Seong Wook Moon, Seoul (KR); Song Il Park, Seongnam-si (KR); Sung Bae Jeon, Ansan-si (KR); Sung Hoon Yu, Hwaseong-si (KR); Joon Young Park, Seoul (KR); and Chan Ho Lee, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed on Nov. 20, 2020, as Appl. No. 16/953,582.
Claims priority of application No. 10-2019-0163384 (KR), filed on Dec. 10, 2019.
Prior Publication US 2021/0171041 A1, Jun. 10, 2021
Int. Cl. B60W 30/18 (2012.01); B60L 7/26 (2006.01); B60W 10/08 (2006.01); B60W 10/30 (2006.01)
CPC B60W 30/18127 (2013.01) [B60L 7/26 (2013.01); B60W 10/08 (2013.01); B60W 10/30 (2013.01); B60L 2240/12 (2013.01); B60L 2240/423 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of controlling a brake lamp of a vehicle having an electric motor as a power source, the method comprising:
determining whether gear shifting is required and whether there is a forward section with a slope that is greater than a preset threshold value when regenerative braking is performed through the electric motor without manipulation of an accelerator pedal or a brake pedal;
delaying the gear shifting until a gear-shifting limit is exceeded when the gear shifting is required, and when there is the forward section with the slope;
calculating acceleration based on regenerative braking torque while the gear shifting is delayed; and
controlling the brake lamp based on the calculated acceleration;
wherein whether the gear shifting limit is exceeded is determined based on a vehicle speed, a gear ratio of a current gear stage, and a maximum number of revolutions per minute of a motor.