US 11,697,359 B2
Distance-to-empty presentation apparatus and presentation method of distance to empty
Shinichi Shimakami, Nagoya (JP)
Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jan. 14, 2021, as Appl. No. 17/148,713.
Claims priority of application No. 2020-012298 (JP), filed on Jan. 29, 2020.
Prior Publication US 2021/0229571 A1, Jul. 29, 2021
Int. Cl. B60L 58/30 (2019.01); B60W 20/20 (2016.01); B60W 20/40 (2016.01); G01C 21/34 (2006.01)
CPC B60L 58/30 (2019.02) [B60W 20/20 (2013.01); B60W 20/40 (2013.01); G01C 21/3469 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A distance-to-empty presentation apparatus of a fuel cell vehicle, the distance-to-empty presentation apparatus comprising:
a traveling speed acquisition unit configured to acquire a traveling speed of the fuel cell vehicle;
a traveling distance acquisition unit configured to acquire a traveling distance of the fuel cell vehicle in a fuel filling period, the fuel filling period is a period running from a previous time when the fuel is filled in the fuel cell vehicle to a current time when the fuel is filled in the fuel cell vehicle;
a fuel residual amount acquisition unit configured to acquire a fuel residual amount of the fuel cell vehicle;
a fuel consumption amount acquisition unit configured to acquire a traveling period fuel consumption amount of the fuel cell vehicle, the traveling period fuel consumption amount being a fuel consumption amount during travel preparation and during traveling in the fuel filling period, wherein the fuel consumption amount acquisition unit stops integration of the traveling period fuel consumption amount during a stop of the fuel cell vehicle for a period of time equal to or greater than a predetermined period;
a fuel efficiency calculation unit configured to calculate a fuel filling period fuel efficiency by using the traveling distance in the fuel filling period and the traveling period fuel consumption amount, wherein the fuel filling period fuel efficiency is a fuel efficiency in the fuel filling period;
a distance-to-empty calculation unit configured to calculate a distance to empty of the fuel cell vehicle by using the fuel filling period fuel efficiency and the fuel residual amount;
a presentation device configured to present the distance to empty that has been calculated; and
a learning fuel efficiency calculation unit configured to calculate a learning fuel efficiency by using the fuel filling period fuel efficiency that has been calculated in the fuel filling period and a fuel filling period fuel efficiency that has been calculated previously,
wherein the learning fuel efficiency calculation unit calculates the learning fuel efficiency by using Equation (1) below,
Cg(n)=k1·Cg(n−1)+(1−k1)Cr  Equation (1):
wherein
k1 is a predetermined coefficient,
Cg(n) is the learning fuel efficiency calculated in the fuel filling period,
Cg(n−1) is a learning fuel efficiency calculated previously, and
Cr is the fuel filling period fuel efficiency calculated in the fuel filling period.