Abstract: Some embodiments of the disclosure provide a cathode circulation system of a fuel cell connected to a power generation unit of the fuel cell. The cathode circulation system includes a first gas supply tank for providing an inert gas, a second gas supply tank for providing a reaction gas, a mixing tank connected to the first gas supply tank and the second gas supply tank for mixing the inert gas and the reaction gas, a gas-liquid separator connected to the power generation unit, and at least one cathode gas pump provided between the mixing tank and the gas-liquid separator and between the mixing tank and the power generation unit.

Abstract: Some embodiments of the disclosures provide an anode recovery system of a fuel cell. The anode recovery system includes a gas supply unit connected to a power generation unit, a gas-liquid separator connected to the power generation unit and a first anode gas recovery control component; and a storage tank connected to the gas-liquid separator and a cathode recovery system. The gas supply unit is configured to provide anode gas to the power generation unit. A first part of unreacted anode gas from the power generation unit mixes with the anode gas and flows back to the power generation unit sequentially via the gas-liquid separator and the first anode gas recovery control component. A second part of the unreacted anode gas and generated water are discharged from the power generation unit to the storage tank and is further discharged to the cathode recovery system.

Abstract: The present invention relates to a fuel cartridge structure with sensor apparatus, comprising a main fuel solution tank provided with a casing with accommodation space, the accommodation space being used for storing the fuel solution; and a sensor apparatus mainly having two sensor components, the two sensor components being disposed on exterior surface or in the structure of the casing of the main fuel solution tank for achieving the objective of measurement.

Abstract: A fuel cell hybrid power supply apparatus comprises a fuel cell power supply circuit and a secondary battery power supply circuit. Wherein a charger unit of the secondary battery power supply circuit determines the power characteristics for the recharging of a secondary battery unit of the secondary battery power supply circuit, based on the electrical signal outputted by a sensor unit of the fuel cell power supply circuit; the sensor unit regulates the predetermined voltage levels separately at output terminal of the fuel cell power supply circuit and the secondary battery power supply circuit with a differential between said voltage levels based on the power transmitted by the fuel cell power supply circuit, and controls the recharging of the secondary battery unit by the charger unit; and a fuel cell unit of the fuel cell power supply circuit outputs power at a predetermined constant work rate.

Abstract: A hybrid power supply apparatus with fuel cell output control comprises: a first power supply circuit and a second power supply circuit, the first power supply circuit consisting of a first power unit, a first voltage conversion unit, a sensor unit, and a control unit, wherein the voltage conversion unit is connected to the power unit, and contains a DC voltage booster circuit or a DC voltage buck circuit to convert the DC power generated by the power unit into DC power of specific voltage for output; the sensor unit being able to detect the voltage or the current of DC power output by the first power unit that enables the control unit to control the DC power conversion ratio of the first voltage conversion unit or stop the DC power conversion by the first voltage conversion unit based on the electric signal fed from the sensor unit, thereby protecting the first power unit.

Abstract: A fuel cell apparatus with charge circuit comprises a fuel cell, a power output circuit and a charge circuit. The power output circuit transmits the power outputted by the fuel cell and further comprises a sensor unit for detecting the power characteristics outputted by the power output circuit and outputs corresponding electrical signals. The charge circuit transmits power outputted by the fuel cell and comprises a secondary cell and a charging unit. The charging unit controls the charge circuit to perform the charging operation of the secondary cell, wherein the power output circuit is electrically connected in parallel with the charge circuit, while the fuel cell is electrically connected in series with the power output circuit. The charging unit performs the charging control of the charge circuit to the secondary cell according to electrical signals outputted by the sensor unit.

Abstract: The present invention relates to a current-limiting voltage conversion device, comprising a voltage conversion unit, a voltage signal unit, a sensor unit and a DC power loop. The voltage conversion unit and the sensor unit are electrically connected in series in the DC power loop. The voltage signal unit outputs a corresponding voltage signal to the voltage conversion unit based on the electric signal output by the sensor unit, and the voltage conversion unit controls the voltage conversion of the voltage conversion unit based on said voltage signal.

Abstract: The present invention relates to a fuel cell with temperature sensor device, characterized in which the membrane electrode assembly of the fuel cell is installed on a circuit board where the circuit board comprises a temperature sensor module having resistance property. The temperature sensor module is installed on the circuit board or a heat sink where the resistance of the temperature sensor module is used to determine the temperature surrounding the temperature sensor module.

Abstract: A solution metering apparatus having temperature sensing function comprises a substrate; a sensor layer consisting of a first sensing member, a second sensing member, and a temperature sensing member, where the first sensing member and the second sensing member respectively have in horizontal direction a plurality of sidewardly extended parallel strip lines that are alternately arranged, and the temperature sensing member is made of equivalent resistor material and disposed on one side surface of the substrate; and a protective layer overlying the sensor layer. The solution metering apparatus makes use of the physical characteristics of fluid as measured by the sensor layer, particularly its temperature sensing member to determine temperature change based on change in resistance value.

Abstract: The present invention relates to a fuel cell having moisture sensor device. The fuel cell comprises a power generation structure that consists of a circuit board; a membrane electrode assembly arranged on the circuit board; and a moisture sensor unit comprising a first sensing member and a second sensing member. The first sensing member and the second sensing member are electrically connected to the circuit board and disposed on the circuit board such that they produce capacitance effect.

Abstract: A power supply device with voltage converter circuit comprises a power supply device, a boost loop, a buck loop, and a control unit. The power supply device supplies power by any means. The boost loop is used to step up the voltage of power output by the power supply device. The buck loop is used to step down the voltage of power output by the power supply device. The boost loop and the buck loop are electrically connected in parallel. The control unit selects the use of boost loop or buck loop for the voltage conversion of the power supply device. The control unit monitors the power output of the power supply device and controls the action of the boost loop or the buck loop such that the power supply device would output voltage desired by the system via voltage conversion.

Abstract: The present invention relates to a fuel cell system with series-parallel circuit, comprising a plurality of fuel cell stacks and a series-parallel circuit unit. Each fuel cell stack contains. DC power output terminals, and the series-parallel circuit unit consists of a plurality of parallel mode selection units and DC power output terminals. The DC power output terminal of respective fuel cell stack is electrically connected to the corresponding parallel mode selection unit in the series-parallel circuit unit. The parallel mode selection units are electrically parallel-connected to the DC power output terminal of the series-parallel circuit unit. The parallel mode selection unit selects whether the DC power output terminal of the corresponding fuel cell stack and the DC power output terminal of the series-parallel circuit unit are electrically connected or disconnected.

Abstract: A fuel cell power supply system integrated with rechargeable batteries comprises a fuel cell unit, a rechargeable battery device and a loop switching device. The fuel cell unit outputs DC power; the rechargeable battery device comprises a plurality of rechargeable batteries which are secondary cells and able to output or input DC power; and the loop switching device comprises a DC power output terminal and an electrical connect/disconnect selection means. The fuel cell unit and the rechargeable batteries are respectively electrically connected to the loop switching device, and the loop switching device selects electrical contact between the fuel cell unit and any rechargeable battery in the rechargeable battery device, and selects electrical connection between any other rechargeable battery in the rechargeable battery device and DC power output terminal of the loop switching device.

Abstract: The present invention relates to a fuel cell system with series-parallel circuit, comprising a plurality of fuel cell stacks, each fuel cell stack consisting of a fuel cell member and a DC voltage conversion unit; and a series-parallel circuit unit. The fuel cell member in respective fuel cell stack is electrically series-connected to the corresponding DC voltage conversion unit. The DC voltage conversion unit in each fuel cell stack includes a positive terminal and a negative terminal. The series-parallel circuit unit is electrically connected to the positive terminals and the negative terminals of the fuel cell stacks to form a specific electrical series-parallel connection relationship. The series-parallel circuit unit outputs the integrated power from the fuel cell stacks.

Abstract: The present invention relates to a fuel cell with protective device, comprising a plurality of fuel cell stacks, a fuel cell protection circuit unit and a switch control device. The fuel cell protective circuit unit consists of a plurality of channel selection devices and a series-parallel circuit unit. The channel selection devices respectively correspond to one of the fuel cell stacks. The series-parallel circuit unit is electrically connected to the channel selection devices and has an electric output terminal. The fuel cell stacks are respectively electrically connected to the corresponding channel selection devices in the fuel cell protection circuit unit, and the switch control device controls the selection by the corresponding channel selection devices of an electrically open state or an electrically closed state between respective fuel cell stack and the series-parallel circuit unit.