US 11,813,944 B2
Electrified tractor and computer-readable medium
Yuki Sugo, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Apr. 7, 2022, as Appl. No. 17/715,039.
Claims priority of application No. 2021-077739 (JP), filed on Apr. 30, 2021.
Prior Publication US 2022/0348089 A1, Nov. 3, 2022
Int. Cl. B60L 15/20 (2006.01); B60L 58/12 (2019.01); B60K 17/28 (2006.01); B62D 49/06 (2006.01); B60C 27/02 (2006.01)
CPC B60L 15/20 (2013.01) [B60C 27/02 (2013.01); B60K 17/28 (2013.01); B62D 49/0692 (2013.01); B60L 2200/40 (2013.01); B60L 2210/40 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electrified tractor, comprising:
a vehicle body connectable to a work machine;
an electric motor;
a battery in which electric power to be supplied to the electric motor is stored;
an inverter configured to control input-output electric power of the battery;
a wheel for traveling, the wheel being configured to rotate by a driving force from the electric motor; and
a control device configured to control the inverter as a target to be controlled, wherein the control device executes the following processes:
a restriction process of, on condition that the electrified tractor travels inside a restriction area determined in advance as one condition, controlling the inverter such that the input-output electric power of the battery falls within a specific electric power range determined in advance;
a determination process of determining whether or not there is a possibility that the electrified tractor moves from the restriction area to outside the restriction area; and
a relaxation process of, in a case where an affirmative determination is made in the determination process during the restriction process, expanding the specific electric power range as compared with a case where a negative determination is made in the determination process, wherein
in a case where the number of times the affirmative determination is made in the determination process exceeds a specific number of times determined in advance after the restriction process is started but before the restriction process is ended, the control device prohibits execution of the relaxation process.