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

Claim 3:
4. A vehicle control system configured such that a battery pack including a secondary battery and a battery sensor that detects a state of the secondary battery is attached to the vehicle control system, the vehicle control system comprising:
a vehicle control device configured to control an input power of the secondary battery such that the input power of the secondary battery does not exceed a power upper limit value when the battery pack is attached to the vehicle control system; and
a conversion device configured to:
recognize, in response to the battery pack being connected to the conversion device, whether the battery pack outputs the power upper limit value or a current upper limit value indicating an upper limit value of an input current of the secondary battery,
output, to the vehicle control device, the power upper limit value output from the battery pack in a case where the battery pack outputs the power upper limit value, and
output, 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:
when the current upper limit value and a detection value of the battery sensor are input from the battery pack, using the detection value of the battery sensor and the current upper limit value to obtain an estimated voltage 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, and
converting the current upper limit value into the power upper limit value by multiplying of the current upper limit value by the estimated voltage value.