Abstract: A fuel cell system includes a fuel cell stack, an air supply system including a blower for driving the air to the fuel cell stack and an air humidifier for humidifying the air supplied to the fuel cell stack, a hydrogen supply system including a hydrogen storage and a pressure regulating device, and a hydrogen recirculator for receiving excessive hydrogen from the fuel cell stack and forcing the hydrogen back into the fuel cell stack in order to induce a hydrogen flow inside the fuel cell stack. A control circuit electrically controls the flow and pressure regulating device for regulating the hydrogen flow to the fuel cell stack and electrically controls the blower to regulate the air flows to the fuel cell stack and the air humidifier.

Abstract: An anode stream recirculation system for a fuel cell, the fuel cell including an anode gas input and an anode gas output, the anode stream recirculation system comprising: an anode gas supply; a switch connected with the anode gas supply; a pressure regulating device connected between the switch and the anode gas input of the fuel cell; a diaphragm pump connected between the anode gas output and the anode gas input of the fuel cell thereby forming an anode gas recirculation; wherein the diaphragm pump has at least a sensor electrically connected with the switch.

Abstract: A device for regulating temperature and humidity of a reaction gas to be supplied to a fuel cell stack includes a temperature regulation section provided with a first gas guide board through which the reaction gas flows, a coolant guide board through which a coolant from the fuel cell stack flows and a first partition interposed between the first gas guide board and the coolant guide board for exchange of heat between the reaction gas and the coolant and a humidity regulation section coupled to the temperature regulation section with a second partition therebetween and comprised of a second gas guide board through which the temperature-regulated gas flows and a fluid guide board through which a fluid from the fuel cell stack and rich of water contents flows and a humidity exchange film interposed between the second gas guide board and fluid guide board to allow for exchange of water contents between the temperature-regulated gas and the fluid.

Abstract: A heating device for a container in which a hydrogen storage canister is disposed. The hydrogen storage canister supplies hydrogen to a fuel cell including a discharge port, and the heating device includes a water jacket and a seal member. The water jacket is disposed on the container, and communicates with the discharge port of the fuel cell. When the hydrogen storage canister is disposed on the container, the hydrogen storage canister is surrounded by the water jacket and is heated by via water from the discharge exit. The seal member is disposed between the water jacket and the container so that the hydrogen storage canister is closely abutted by the water jacket.

Abstract: An anode stream recirculation system for a fuel cell, the fuel cell including an anode gas input and an anode gas output, the anode stream recirculation system comprising: an anode gas supply; a switch connected with the anode gas supply; a pressure regulating device connected between the switch and the anode gas input of the fuel cell; a diaphragm pump connected between the anode gas output and the anode gas input of the fuel cell thereby forming an anode gas recirculation; wherein the diaphragm pump has at least a sensor electrically connected with the switch.

Abstract: This invention is related to a metal hydride storage canister, comprising a storage canister body, a wafer baffle stacked on the body for containing metal hydride of a pre-determined amount, and a tubing having a porous surface for securing the wafer baffle in the body and for guiding hydrogen discharged from the metal hydride to an outlet of the body. This invention further discloses the manufacture of the storage canister.

Abstract: An anode stream recirculation system for a fuel cell, the fuel cell including an anode gas input and an anode gas output, the anode stream recirculation system comprising: an anode gas supply; a switch connected with the anode gas supply; a pressure regulating device connected between the switch and the anode gas input of the fuel cell; a diaphragm pump connected between the anode gas output and the anode gas input of the fuel cell thereby forming an anode gas recirculation; wherein the diaphragm pump has at least a sensor electrically connected with the switch.

Abstract: A control device for controlling hydrogen flow of a hydrogen storage canister accommodated in a canister containing chamber includes a heating device which is connected to a heating fuel storage tank via a heating fuel supplying pipeline for conveying a heating fuel to a catalyst bed in the canister containing chamber and generating heat by combustion of the heating fuel at the catalyst bed. A blowing device provides an air flow to the canister containing chamber. A controller controls the operation of the heating device and the blowing device in correspondence to a temperature signal detected from an internal space of the canister containing chamber. The controller is coupled with a setting unit for setting various parameters which are stored in a parameter storage unit for controlling the controller.

Abstract: A device for heating hydrogen storage canister includes a canister containing chamber for accommodation of at least one hydrogen storage canister, a catalyst bed arranged in the canister containing chamber for catalysis. A blowing device provides an air flow through an air flow leading pipe to a nozzle section which is connected with a heating gas drawing pipe to the catalyst bed. A heating fuel storage tank supplies heating fuel which is conveyed to the nozzle section through a heating fuel supplying pipeline, a coiled pipe and a heating fuel conveying pipe in sequence. When the air flow flows through the nozzle section, the heating fuel is drawn into the nozzle section to mix with the air flow, forming a heating gas. The heating gas is atomized by the nozzle section and flows to the catalyst bed where the heating gas is catalyzed to burn to generate a hot gas to heat the hydrogen storage canister.

Abstract: A gasket assembly for gas channels of a fuel cell stack is disclosed. A central part of a bipolar plate of the fuel cell stack is formed with a plurality of channels which is connected to a gas passage via a collective channel and a plurality of communication channels. A reception region is formed across a middle section of the communication channels and a pressure resistant packing is mounted in the reception region, forming a smooth and flat plane with the ridges of the partitions outside the reception region. A gasket is mounted between the bipolar plate and the membrane electrode assembly and acts with the packing to form a gastight gasket assembly in the form of a dual gasket structure.

Abstract: This invention is related to a metal hydride storage canister, comprising a storage canister body, a wafer baffle stacked on the body for containing metal hydride of a pre-determined amount, and a tubing having a porous surface for securing the wafer baffle in the body and for guiding hydrogen discharged from the metal hydride to an outlet of the body. This invention further discloses the manufacture of the storage canister.

Abstract: An electric scooter includes a scooter frame having a rear cover inside which a fuel cell stack is mounted in an inclined manner and a center cover connected to the rear cover by a footstep section. A front cover is mounted to a front side of the scooter frame and forms an interior space with the center cover. A hydrogen canister holder is mounted in the interior space for retaining a number of hydrogen storage canisters in an inclined manner for supply of hydrogen to the fuel cell stack. The canisters are arranged in pair on opposite sides of a centerline of the scooter frame. A heat dissipation system including a coolant container, a heat exchanger, and a pump is further provided in the interior space to maintain the hydrogen storage canisters at a proper operation temperature.

Abstract: This invention is related to an anode stream recirculation system for a fuel cell comprising an anode gas supply, a switch and a regulating device to properly control the amount of anode gas supply; a sensor connected with the switch to detect the pressure of the anode gas discharged from the fuel cell and to control the open/close of the switch; and a humidifier to adjust the humidity of the anode gas discharged from the fuel cell. The discharged anode gas after the adjustment of the humidity thereof is redirected to anode gas input of the fuel cell to form an anode gas recirculation.

Abstract: This invention is related to a generating system for a fuel cell, and heat waste recirculating and cooling system of said generating system, comprising: a water tank for temporarily storing hot water generated by the fuel cell, a heat exchanger in thermal conductive communication with an anode gas supply, and a pump for pumping the hot water to the heat exchanger, whereby heat energy of the hot water is used to heat the anode gas supply for releasing anode gas, wherein water upon releasing the heat energy is transported back to the fuel cell to reduce the temperature of the fuel cell, thereby forming a heat waste recirculation.

Abstract: A control device for controlling the operation of a fuel cell system is disclosed, including a microprocessor, a voltage detection circuit, a current detection circuit, a hydrogen pressure detection circuit, a temperature detection circuit, an air flow rate control circuit that is controlled in a pulse width modulation manner, and a pulse signal generation circuit. The air flow rate control circuit is controlled by the microprocessor for regulating the air flow rate through an air supply conduit in a pulse width modulation manner in accordance with output current of a fuel cell stack. The pulse signal generation circuit is controlled by the microprocessor to generate pulse signals for controlling hydrogen flow through a hydrogen supply conduit. The control device monitors the operation conditions of the fuel cell system and performs a preset control process to control the operation of the fuel cell stack so as to optimize the efficiency and overall performance of the fuel cell system.

Abstract: A fuel cell assembly having a self-recycling humidifier. The fuel cell assembly includes a humidifier and a fuel cell module communicating with an external hydrogen source. The fuel cell module chemically combines hydrogen from the hydrogen source and oxygen from introduced air to produce electricity and water. The produced water is removed by an airflow. The moisture is recycled by the humidifier to humidify the introduced air.

Abstract: This invention is related to a bipolar plate for a fuel cell, the bipolar plate comprises a central area and a surrounding area, wherein the central area has a first side surface and a second side surface opposed to the first side surface, the central area is in a form of continuous corrugation which defines a plurality of grooves that are substantially parallel with and complementary to each other on each of the first side surface and the second side surface. The thickness of the bipolar plate of this invention can be very thin so as to decrease the dimension and weight of the fuel cell. The grooves are connected to enlongated holes in the surrounding area by channels which are formed in a longitudinal direction on a first side and in a direction transverse to a longitudinal direction on a second side. The cost for manufacturing the fuel cell is also reduced by the simplified process of this invention.

Abstract: A module for humidifying a fuel cell and a unit cell therein. The unit cell includes a first guiding plate, a second guiding plate, and an intermediate layer. The first guiding plate, communicating with the fuel cell, includes a plurality of first grooves so that air flows to the fuel cell via the first grooves. The second guiding plate, communicating with the fuel cell, includes a plurality of second grooves so that gas from the fuel cell flows out of the unit cell via the second grooves. The second grooves face the first grooves. The intermediate layer is disposed between the first guiding plate and the second guiding plate, and prevents the air flowing in the first grooves from mixing with the gas flowing in the second grooves. Water content in the gas flowing in the second grooves is transmitted to the first grooves.

Abstract: A fuel cell stack includes a number of modularized plate structures including an anode plate, a cathode plate, water coolant plates and air coolant plates. The anode and cathode plates are designed to form hydrogen and air channels that allow for uniform distribution and even flow of hydrogen and air through the channels with the channels of each particular plate having substantially identical length in order to enhance electrochemical reaction between hydrogen and oxygen contained in the air with respective catalysts in the fuel cell stack. Also a sufficient amount of air is allowed to flow through the cathode plate to enhance output power of the fuel cell stack. The coolant plates adapt a split design, which introduces turbulence in the coolant channels to enhance heat removal.

Abstract: A water draining structure for gas reaction plate of a fuel cell stack includes a gas inlet, a gas outlet, a plurality of wide gas channels parallelly arranged to communicate with the gas inlet, and a plurality of narrow gas channel parallelly arranged to communicate with the gas outlet, all provided on the gas reaction plate. Each of the wide gas channels is communicable with a corresponding one of the narrow gas channels. When an amount of reacting gas is guided into the gas reaction plate, it encounters a significant change in cross-section area from the wide gas channels to the narrow gas channels. A substantial pressure difference between the wide and narrow gas channels is generated, providing a force to blow off moisture in the wide and narrow gas channels.