US 12,405,120 B2
Device and method for improving fuel efficiency of fuel cell vehicle in uphill and downhill driving
Ki Chang Kim, Seoul (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 Apr. 28, 2022, as Appl. No. 17/731,602.
Claims priority of application No. 10-2021-0101561 (KR), filed on Aug. 2, 2021.
Prior Publication US 2023/0036318 A1, Feb. 2, 2023
Int. Cl. G01C 21/34 (2006.01); B60L 58/12 (2019.01); B60L 58/30 (2019.01); B60W 40/105 (2012.01); B60W 40/13 (2012.01)
CPC G01C 21/3469 (2013.01) [B60L 58/12 (2019.02); B60L 58/30 (2019.02); B60W 40/105 (2013.01); B60W 40/13 (2013.01); B60W 2510/081 (2013.01); B60W 2510/085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for improving a fuel efficiency of a fuel cell vehicle in uphill and downhill driving, the device comprising:
a driving altitude determination device configured to estimate an uphill altitude at which a vehicle is to travel up to a highest altitude based on a current driving altitude on an uphill road on which the vehicle travels; and
a final stack output determination device configured to determine a stack output to be generated in a fuel cell stack in order for the vehicle to travel to the highest altitude based on a remaining state of charge, SOC, of a battery and the uphill altitude.
 
12. A method of improving a fuel efficiency of a fuel cell vehicle in uphill and downhill driving, the method comprising:
estimating, by a driving altitude determination device, an uphill altitude at which the vehicle is to travel up to a highest altitude based on a current driving altitude on an uphill road on which the vehicle travels; and
determining, by a final stack output determination device, a stack output to be generated in a fuel cell stack in order for the vehicle to travel to the highest altitude based on a remaining state of charge, SOC, of a battery and the uphill altitude.