Patent ID: 11858366
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 4:
5. A vehicle control method performed by a vehicle control system to which a battery pack is attached, the battery pack including a secondary battery and a battery sensor that detects a state of the secondary battery, the vehicle control method comprising:
recognizing, in response to the battery pack being connected to the vehicle control system, whether the battery pack outputs a power upper limit value or a current upper limit value, the power upper limit value indicating an upper limit value of an input power of the secondary battery, and the current upper limit value indicating an upper limit value of an input current of the secondary battery;
outputting, to a vehicle control device configured to control an input power of the secondary battery based on the power upper limit value, the power upper limit value output from the battery pack in a case where the battery pack outputs the power upper limit value; and
outputting, to the vehicle control device, the power upper limit value obtained by performing a conversion process in a case where the battery pack outputs the current upper limit value, wherein
the conversion process includes:
obtaining the current upper limit value and a detection value of the battery sensor, from the battery pack;

obtaining an estimated voltage value using the detection value of the battery sensor and the current upper limit value, the estimated voltage value being a voltage value of the secondary battery in a state where a current corresponding to the current upper limit value is flowing;
converting the current upper limit value into the power upper limit value by multiplying the current upper limit value by the estimated voltage value; and
controlling the input power of the secondary battery using the power upper limit value.