US 12,441,294 B2
Electrified vehicle and method for controlling a regenerative braking amount thereof
Min Gyun Jo, Ansan-si (KR); Jae Young Choi, Seoul (KR); Gwang Il Du, Ansan-si (KR); Han Nah Song, Daejeon (KR); Chun Hyuk Lee, Seongnam-si (KR); and Hoon Han, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Dec. 6, 2022, as Appl. No. 18/076,135.
Claims priority of application No. 10-2022-0083286 (KR), filed on Jul. 6, 2022.
Prior Publication US 2024/0010184 A1, Jan. 11, 2024
Int. Cl. B60W 20/14 (2016.01); B60W 10/10 (2012.01); B60W 10/18 (2012.01); B60W 30/18 (2012.01)
CPC B60W 20/14 (2016.01) [B60W 10/10 (2013.01); B60W 10/18 (2013.01); B60W 30/18127 (2013.01); B60W 2552/15 (2020.02); B60W 2554/80 (2020.02)] 16 Claims
OG exemplary drawing
 
1. A method of controlling an electrified vehicle, the method comprising:
determining a traveling environment level;
determining a regenerative braking continuation range and a regenerative braking retention amount based on the traveling environment level when a preset deceleration condition is satisfied;
decreasing the regenerative braking continuation range and the regenerative braking retention amount as the traveling environment level increases; and
determining whether to maintain a regenerative braking amount as the regenerative braking retention amount based on whether a vehicle speed is included in the regenerative braking continuation range when the vehicle speed is lower than or equal to a preset regenerative braking termination vehicle speed,
wherein determining whether to maintain the regenerative braking amount comprises:
decreasing the regenerative braking amount when the vehicle speed is lower than or equal to the preset regenerative braking termination vehicle speed and the vehicle speed is not included in the regenerative braking continuation range,
wherein decreasing the regenerative braking amount comprises:
executing hydraulic braking based on a difference between a braking demand amount according to an operation of a brake pedal and a regenerative braking execution amount, and
wherein the traveling environment level is determined based on at least one of a deceleration of the vehicle, a distance between a front obstacle and the vehicle, a slope of a ground, or a wheel braking amount, or a combination thereof.