OUTPUT CONTROLLER FOR FUEL CELL

• US 20100235031A1
• Filed: 09/29/2008
• Published: 09/16/2010
• Est. Priority Date: 10/22/2007
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Imai, Atsushi, Yoshida, Michio
• Granted Patent: US 9,713,964 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2250/26 by pedal actuation
• CPC Class Codes: B60L 58/31 for starting of fuel cells
• CPC Class Codes: B60L 58/33 by cooling
• CPC Class Codes: B60L 58/34 by heating
• CPC Class Codes: H01M 16/006 of fuel cells with rechargeable batteries
• CPC Class Codes: H01M 2250/20 Fuel cells in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 8/04268 Heating of fuel cells during the start-up of the fuel cells
• CPC Class Codes: H01M 8/04544 Voltage
• CPC Class Codes: H01M 8/04559 of fuel cell stacks
• CPC Class Codes: H01M 8/0488 of fuel cell stacks
• CPC Class Codes: H01M 8/0494 of fuel cell stacks
• CPC Class Codes: H01M 8/04992 characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 90/40 Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

In a drive control system for a fuel cell-equipped vehicle including a rotating electrical machine, a control unit includes a rapid warm-up processing module for performing rapid warm-up by the low-efficiency power generation of a fuel cell, a torque command value limiting module 68 for limiting the torque command value in accordance with the change of a system voltage caused by rapid warm-up processing, and an FC output command value calculating module for calculating the output command value of the fuel cell in accordance with the limited torque command value. In a storage device connected to the control unit, a system voltage characteristic map which shows the torque-rotation speed characteristics of the rotating electrical machine corresponding to the system voltage is stored.

Claims

1. An output controller for a fuel cell comprising:

a system voltage setting unit for changing and setting a system voltage value as an input voltage to a driving circuit of a rotating electrical machine connected to the fuel cell from a rated voltage value to a predetermined voltage value lower than the rated voltage value, in a case where the temperature of the fuel cell is not more than a predetermined temperature;

a torque limiting unit for reading, on the basis of the system voltage value, a maximum torque and a minimum torque from a system voltage characteristic map to regulate the characteristics of the rotation speed and the torque of the rotating electrical machine which change in accordance with each system voltage value, to limit the torque command value of the rotating electrical machine; and

a unit for calculating an output command value to the fuel cell in accordance with the power consumption value of the rotating electrical machine obtained on the basis of the limited torque command value and the rotation speed of the rotating electrical machine.

2-3. -3. (canceled)