Patent ID: 7946365
Filing Date: 2011-05-24
Classification: B60L,H01M,Y02E,Y02T

Abstract:
1. A control method for a fuel cell vehicle including a motor being a driving source of the fuel cell vehicle, a motor controller for controlling an operation status of the motor, and a fuel cell system being a power source for the motor, said fuel cell system including: a fuel cell which receives reaction gasses and performs electrochemical reactions to generate an electrical power, a power storage device which is charged with the generated electrical power from the fuel cell and a regeneration power from the motor; a first DC-DC converter provided between the power storage device and the motor controller; and a second DC-DC converter provided between the fuel cell and the motor controller, the first DC-DC converter and the second DC-DC converter both including switching elements, the switching elements performing switching operations to control voltage, said control method for a fuel cell vehicle comprising: obtaining a target motor output power corresponding to an accelerator opening degree; and controlling operation of the first DC-DC converter and the second DC-DC converter, such that an output voltage of the fuel cell system becomes equal to or larger than a predetermined voltage that is required for securing a desired motor output power, when the target motor output power is larger than a predetermined output power threshold value.