US 12,227,104 B2
Computing systems and methods for controlling current in vehicle motors
Moshe Miller, Rehovot (IL); and Jonathan Drori, Kibbutz Zikim (IL)
Assigned to Tomcar Holding Company LLC, Phoenix, AZ (US)
Filed by Tomcar Holding Company LLC, Phoenix, AZ (US)
Filed on May 22, 2023, as Appl. No. 18/321,760.
Application 18/321,760 is a continuation of application No. 17/510,029, filed on Oct. 25, 2021, granted, now 11,654,790.
Application 17/510,029 is a continuation of application No. 16/277,640, filed on Feb. 15, 2019, granted, now 11,155,182, issued on Oct. 26, 2021.
Prior Publication US 2024/0131961 A1, Apr. 25, 2024
Prior Publication US 2024/0227621 A9, Jul. 11, 2024
Int. Cl. B60L 58/14 (2019.01); B60L 15/20 (2006.01); B60W 10/08 (2006.01); B60W 20/13 (2016.01)
CPC B60L 58/14 (2019.02) [B60L 15/2045 (2013.01); B60W 10/08 (2013.01); B60W 20/13 (2016.01); B60L 2240/429 (2013.01); B60L 2240/549 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a drive motor;
a battery pack;
at least one processor;
a non-transitory computer-readable storage medium; and
program instructions stored on the non-transitory computer-readable storage medium that are executable by the at least one processor to cause the vehicle to:
generate a first curve that defines, for a first range of rotational velocities of the drive motor, a first relationship between a charge level of the battery pack and a first drive current limit of the vehicle;
generate a second curve that defines, for a second range of rotational velocities of the drive motor, a second relationship between the charge level of the battery pack and a second drive current limit of the vehicle, wherein the second range of rotational velocities does not overlap with, and is higher than, the first range of rotational velocities;
determine, at a given time, a rotational velocity of the drive motor that is within the first range of rotational velocities;
determine a charge level of the battery pack at the given time;
based on (i) the determined rotational velocity of the drive motor within the first range of rotational velocities and (ii) the charge level of the battery pack at the given time, determine a first drive current limit of the vehicle using the first curve;
convert a discharge current from the battery pack to a drive current subject to the determined first drive current limit; and
supply the drive current to the drive motor.