US 11,656,086 B2
Electricity consumption rate predicting device
Kazuya Yokota, Tokyo (JP); and Kosuke Higashitani, Tokyo (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2022, as Appl. No. 17/677,924.
Claims priority of application No. JP2021-040936 (JP), filed on Mar. 15, 2021.
Prior Publication US 2022/0291004 A1, Sep. 15, 2022
Int. Cl. G01C 21/34 (2006.01); B60W 30/14 (2006.01)
CPC G01C 21/3469 (2013.01) [B60W 30/146 (2013.01); G01C 21/3492 (2013.01); B60W 2510/081 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electricity consumption rate predicting device that predicts an electricity consumption rate of a vehicle that travels by a motor, the electricity consumption rate predicting device comprising one or more processors that execute computer-executable instructions stored in a memory, wherein
the one or more processors execute the computer-executable instructions to cause the electricity consumption rate predicting device to:
acquire vehicle speed data of a plurality of vehicles registered for each link in map information, and average vehicle speeds calculated from the vehicle speed data;
divide the links into vehicle speed groups according to a magnitude of each of the average vehicle speeds;
perform statistical processing on the vehicle speed data of the plurality of vehicles for each of the vehicle speed groups, and calculate, based on the statistical processing, a predicted vehicle speed transition simulating a change in vehicle speed for each of the vehicle speed groups; and
apply an electricity consumption rate model of the vehicle determined in advance for each vehicle type to the calculated predicted vehicle speed transition to predict an electricity consumption rate corresponding to the average vehicle speed for each of the vehicle speed groups for each vehicle type,
in calculating the predicted vehicle speed transition, allocate a vehicle speed variation portion and a cruise portion to a distance of each link,
the cruise portion corresponds to a distance over which the vehicle is to travel at the average speed, within the distance of each link,
the vehicle speed variation portion corresponds to a remaining distance other than the distance over which the vehicle is to travel at the average vehicle speed, within the distance of each link, the vehicle speed variation portion being calculated from a number of accelerations, an upper limit vehicle speed obtained by adding a standard deviation to a median value, which is the average vehicle speed, a lower limit vehicle speed obtained by subtracting the standard deviation from the median value, a cruise time when traveling at the upper limit vehicle speed, and a cruise time when traveling at the lower limit vehicle speed, and
the number of accelerations is calculated as a value obtained by dividing, by acceleration energy necessary for one vehicle speed variation, a value obtained by multiplying an acceleration energy equivalent per unit distance calculated for each link by the distance of each link.