Vehicular control device, control method, non-temporary storage medium, and vehicle

A control method executed by a computer of a vehicular control device used in a vehicle on which a lithium-ion battery is installed, the control method comprising:

• determining whether an absolute value of a steering angle as a rotation angle of a steering wheel exceeds a first threshold value;
• estimating a lithium deposition amount as an amount of lithium metal deposited on the lithium-ion battery by regenerative current flowing into the lithium-ion battery, based on vehicle information obtained from the vehicle, when the absolute value of the steering angle exceeds the first threshold value;
• and
• giving a command to report that the vehicle is in a first state, based on the lithium deposition amount.

A non-temporary storage medium storing commands executable by one processor or a plurality of processors of a vehicular control device used in a vehicle on which a lithium-ion battery is installed, the commands causing the one processor or the plurality of processors to execute steps of:

• determining whether an absolute value of a steering angle as a rotation angle of a steering wheel exceeds a first threshold value;
• estimating a lithium deposition amount as an amount of lithium metal deposited on the lithium-ion battery by regenerative current flowing into the lithium-ion battery, based on vehicle information obtained from the vehicle, when the absolute value of the steering angle exceeds the first threshold value;
• and
• giving a command to report that the vehicle is in a first state, based on the lithium deposition amount.

A vehicle on which a lithium-ion battery is installed, the vehicle comprising a vehicular control device including:

• a determining unit configured to determine whether an absolute value of a steering angle as a rotation angle of a steering wheel exceeds a first threshold value;
• an estimating unit configured to estimate a lithium deposition amount as an amount of lithium metal deposited on the lithium-ion battery by regenerative current flowing into the lithium-ion battery, based on vehicle information obtained from the vehicle, when the determining unit determines that the absolute value of the steering angle exceeds the first threshold value;
• and
• a reporting command unit configured to give a command to report that the vehicle is in a first state, based on the lithium deposition amount estimated by the estimating unit.