Fuel cell system and power management method thereof
First Claim
1. A fuel cell system comprising:
- a fuel cell power generation part;
a switch circuit having an input terminal and an output terminal, wherein the input terminal is electrically coupled to the fuel cell power generation part;
a load supply circuit electrically coupled to the output terminal of the switch circuit and for supplying a load with electrical power;
a status detector electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for detecting electrical power provided from the fuel cell power generation part so as to obtain an output voltage of the fuel cell power generation part;
an electronic load circuit electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for performing a current-sinking operation applied to the fuel cell power generation part; and
a control circuit electrically coupled to the status detector and for generating a first control signal and a second control signal according to the value of the output voltage of the fuel cell power generation part, wherein the first control signal is for switching the on-off states of the switch circuit and the second control signal is for controlling a current-sinking value of the electronic load circuit from the fuel cell power generation part.
1 Assignment
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Accused Products
Abstract
A fuel cell system and a power management method thereof are provided. The fuel cell system includes a fuel cell power generation part, a switch circuit, a load supply circuit, a status detector, an electronic load circuit, and a control circuit. An input terminal and an output terminal of the switch circuit are respectively coupled to the power generation part and the load supply circuit. The status detector is coupled to a node between the power generation part and the input terminal to detect an output voltage of the power generation part. The electronic load circuit is coupled to a node between the power generation part and the input terminal to perform a current-sinking operation. The control circuit is for generating a first and a second control signals respectively for switching the on-off states of the switch circuit and controlling the current-sinking value of the electronic load circuit.
6 Citations
14 Claims
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1. A fuel cell system comprising:
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a fuel cell power generation part; a switch circuit having an input terminal and an output terminal, wherein the input terminal is electrically coupled to the fuel cell power generation part; a load supply circuit electrically coupled to the output terminal of the switch circuit and for supplying a load with electrical power; a status detector electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for detecting electrical power provided from the fuel cell power generation part so as to obtain an output voltage of the fuel cell power generation part; an electronic load circuit electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for performing a current-sinking operation applied to the fuel cell power generation part; and a control circuit electrically coupled to the status detector and for generating a first control signal and a second control signal according to the value of the output voltage of the fuel cell power generation part, wherein the first control signal is for switching the on-off states of the switch circuit and the second control signal is for controlling a current-sinking value of the electronic load circuit from the fuel cell power generation part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power management method of a fuel cell system, the fuel cell system comprising a fuel cell power generation part, and the power management method comprising:
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(a) detecting an output voltage of the fuel cell power generation part, comparing the output voltage with a specific voltage, and generating a first control signal according to the comparison result so as to determine the fuel cell power generation part whether to supply a load with electrical power; and (b) detecting the output voltage of the fuel cell power generation part, comparing the output voltage with an operating voltage, and generating a second control signal according to the comparison result so as to control a current-sinking value from the fuel cell power generation part. - View Dependent Claims (11, 12, 13, 14)
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Specification