FUEL CELL VEHICLE, AND METHOD OF SUPPLYING ELECTRIC POWER
First Claim
Patent Images
1. A fuel cell vehicle, comprising:
- a fuel cell for generating electric power by being supplied with a reactive gas;
an electric storage device;
a first power supply line connected to said fuel cell;
a second power supply line connected to said electric storage device;
a main DC-to-DC converter for performing bidirectional voltage conversion between said first power supply line and said second power supply line;
an electric motor to propel the vehicle and a first electric accessory connected to said first power supply line being supplied with electric power from said first power supply line; and
a second electric accessory having at least a portion connected to said second power supply line through an auxiliary DC-to-DC converter for being supplied with electric power from said second power supply line.
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Abstract
A fuel cell vehicle has a fuel cell for generating electric power by being supplied with a reactive gas, an electric storage device, a first power supply line connected to the fuel cell, a second power supply line connected to the electric storage device, and a main DC-to-DC converter for performing bidirectional voltage conversion between the first power supply line and the second power supply line, an electric motor to propel the vehicle and a first electric accessory connected to the first power supply line, a second electric accessory having at least a portion connected to the second power supply line.
31 Citations
18 Claims
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1. A fuel cell vehicle, comprising:
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a fuel cell for generating electric power by being supplied with a reactive gas; an electric storage device; a first power supply line connected to said fuel cell; a second power supply line connected to said electric storage device; a main DC-to-DC converter for performing bidirectional voltage conversion between said first power supply line and said second power supply line; an electric motor to propel the vehicle and a first electric accessory connected to said first power supply line being supplied with electric power from said first power supply line; and a second electric accessory having at least a portion connected to said second power supply line through an auxiliary DC-to-DC converter for being supplied with electric power from said second power supply line. - View Dependent Claims (2, 3, 4, 5, 6, 15, 16)
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7. A fuel cell vehicle, comprising:
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a fuel cell for generating electric power by being supplied with a reactive gas; a first power supply line connected to said fuel cell; a first electric accessory serving as at least part of a fuel cell accessory for operating said fuel cell, said first electric accessory being connected to said first power supply line for being supplied with electric power from said first power supply line; an electric motor to propel the vehicle; an auxiliary electric system; and a main DC-to-DC converter for performing bidirectional voltage conversion, said main DC-to-DC converter connecting said auxiliary electric system to said first power supply line; said auxiliary electric system comprising; a first electric storage device; a second power supply line connecting said first electric storage device and said main DC-to-DC converter to each other; and a second electric accessory serving as an electric accessory other than said fuel cell accessory, wherein at least a portion of said second electric accessory being connected to said second power supply line through an auxiliary DC-to-DC converter, wherein the second electric accessory is supplied with electric power from said second power supply line.
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8. A method of supplying electric power, comprising the steps of:
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supplying an electric motor and a first electric accessory with electric power through a first power supply line from a fuel cell which generates electric power by being supplied with a reactive gas; supplying electric power by a main DC-to-DC converter capable of performing bidirectional voltage conversion, through a second power supply line to a second electric accessory or to an electric storage device to charge the electric storage device; supplying said second electric accessory with electric power through said second power supply line from said electric storage device, wherein at least a portion of said second electric accessory is connected to said second power supply line through an auxiliary DC-to-DC converter; and supplying electric power having a voltage converted from a voltage on said second power supply line by said main DC-to-DC converter, through said first power supply line to said electric motor or said first electric accessory. - View Dependent Claims (9, 10, 11, 12, 13, 14, 17, 18)
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Specification