APPARATUS FOR PORTABLE FUEL CELLS AND OPERATING METHOD THEREOF
First Claim
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1. An apparatus for portable fuel cell comprising:
- a fuel cell comprising a unit cell or a stack of the unit cells;
a secondary battery which is chargeable and dischargeable; and
a power management system (PMS) having a DC-DC converter, the PMS receiving power produced from the fuel cell and supplying the power to an appliance, being connected with the secondary battery to receive or supply power, supplying power for operating the fuel cell, measuring voltage of the fuel cell and regulating power supply based on the measurement,wherein the PMS is supplied with power from the fuel cell at a stabilization state that voltage measured from the fuel cell reaches a constant state after initial operation of the fuel cell.
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Abstract
Disclosed are an apparatus for portable fuel cell and an operation method thereof, wherein stabilization state after initial operation can be determined using OCV.
10 Citations
17 Claims
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1. An apparatus for portable fuel cell comprising:
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a fuel cell comprising a unit cell or a stack of the unit cells; a secondary battery which is chargeable and dischargeable; and a power management system (PMS) having a DC-DC converter, the PMS receiving power produced from the fuel cell and supplying the power to an appliance, being connected with the secondary battery to receive or supply power, supplying power for operating the fuel cell, measuring voltage of the fuel cell and regulating power supply based on the measurement, wherein the PMS is supplied with power from the fuel cell at a stabilization state that voltage measured from the fuel cell reaches a constant state after initial operation of the fuel cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating an apparatus for portable fuel cell, wherein the apparatus for portable fuel cell comprises a fuel cell comprising a unit cell or a stack of the unit cells;
- a secondary battery which is chargeable and dischargeable; and
a power management system (PMS) having a DC-DC converter, the PMS receiving power produced from the fuel cell and supplying the power to an appliance, being connected with the secondary battery to receive or supply power, supplying power for operating the fuel cell, measuring voltage of the fuel cell and regulating power supply based on the measurement,the method comprising the steps of; supplying initial operation power from the secondary battery to the fuel cell (S1); supplying power from the fuel cell to the PMS at a stabilization stage that voltage measured from the fuel cell reaches a constant state after initial operating of the fuel cell (S2); supplying power from the PMS, which is supplied with power, to an appliance, the fuel cell, and the secondary battery (S3); and stopping power supplying from the secondary battery to the fuel cell when the power is supplied from the PMS to the fuel cell (S4). - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
- a secondary battery which is chargeable and dischargeable; and
Specification