Abstract: A gas supply apparatus including: a tank unit that includes a tank storing a gas and a discharge mechanism discharging the stored gas to the outside of the tank at a reduced pressure of the stored gas; a temperature detector that detects a temperature of the tank; and a supply regulator that regulates supply of the gas from the tank according to the detected tank temperature.

Abstract: A movable body includes a fuel cell, a fuel supply means which supplies fuel containing hydrogen to the fuel cell, a limit means which limits the amount of the supplied fuel, a body which includes a space in which an occupant is housed, a conversion means which converts the supplied electric power from the fuel cell to driving force for driving the body, a control portion which controls the operation of the conversion means, and an operating member. The operating member is disposed at a position where the operating member can be operated by the occupant housed in the body, and provides an instruction to execute a control that limits the amount of the supplied fuel using the limit means, without stopping the operation of the control portion.

Abstract: A fuel cell system of the present invention comprises a fuel cell which is supplied with a fuel gas and an oxidizing gas to generate electricity, a fuel gas supply interrupting device for interrupting the fuel gas supply to an anode inlet of the fuel cell, and an anode-off gas interrupting device for interrupting the discharge of anode-off gas from an anode outlet of the fuel cell. When a problem occurs in the system, the fuel gas supply interrupting device cuts off the fuel gas supply to the anode inlet, while the anode-off gas interrupting device opens the anode outlet when the problem in the system occurs, and cuts off the anode-off gas once a predetermined condition has been satisfied.

Abstract: A fuel cell system FC replenishes a fuel cell stack with air or hydrogen by temporarily driving a compressor or a low-pressure valve even during an intermittent operation mode. If air is supplied for replenishment, the amount of air remaining in an air supply system is kept substantially constant, so that the voltage fall during a stop of the fuel cell system can be curbed. If hydrogen is supplied for replenishment, the amount of hydrogen moving to the air supply system is offset, so that a delay in supplying hydrogen can be curbed. Furthermore, the fuel cell system FC inputs signals from a sensor, such as, a brake sensor, a shift selector, or other suitable means and anticipates acceleration of a vehicle equipped with the system FC. On the basis of the anticipation of acceleration, the system FC replenishes the fuel cell stack with air or hydrogen in advance.

Abstract: A fuel cell system that generates electricity using an electrochemical reaction of fuel gas and oxidizing gas, having: a pressure adjustment valve which is provided on a fuel gas supply path for conducting the fuel gas from a fuel gas supply source to a fuel cell and which adjusts the supply gas pressure of the fuel gas; a degree of opening adjustment valve provided downstream of the pressure adjustment valve on the fuel gas supply path, the degree of opening thereof being set in stages or continuously in accordance with a degree of opening signal; and control means that adjusts the degree of opening adjustment signal in accordance with the operating condition of the fuel cell system and controls the state quantity of fuel gas supplied to the fuel cell to a target quantity.

Abstract: The present invention provides a fuel cell system that controls a pressure for a fuel gas supplied to a fuel cell so that the anode-cathode differential pressure between an anode and a cathode of a fuel cell is maintained within a predetermined range, in order to provide a desired generation amount while reducing the amount of fuel gas discharged to the exterior of the system even if it is difficult to provide an appropriate fuel gas supply amount for a fuel cell load (the generation requirement on the cell). If the system determines that the amount of fuel gas supplied to the fuel cell is less than an appropriate required gas amount for the load (generation requirement) (step S9: NO), for example, if the concentration of nitrogen in the fuel gas reaches a predetermined value or greater, the open and close state of shut-off valves H3, H3A is switched to increase the pressure for the fuel gas supplied to the fuel cell 20 (step S11).

Abstract: An hybrid system (10) of the invention includes a fuel cell unit (20) that generates electricity upon being supplied with reaction gases, a secondary battery (40) that stores electric power generated by the fuel cell unit (20), and an electric power control device (30) that controls distribution of electric power supplied to electric power loads (M1, M2) from the fuel cell unit (20) and the secondary battery (40). The secondary battery (40) has a capacity characteristic of being able to supply the requested amounts of electric power of the electric power loads (M1, M2) at least during an early stage following restart of operation of the fuel cell unit (20) from a state of pause of operation.

Abstract: It is an object to provide a simple fuel cell system and to provide a fuel cell system capable of reducing the amount of consumption of fuel gas at the time of completion of operation. A fuel cell system includes a supply piping from a fuel gas supply source storing fuel gas to a gas inlet of a fuel cell and a circulation piping from a gas outlet of the fuel cell to a junction at which the circulation piping joins the supply piping. A regulating valve and a shut-off valve are disposed on the upstream side of the junction in the supply piping. A portion on the downstream side of the junction in the supply piping and the circulation piping are in constant communicated.

Abstract: Disclosed is a fuel tank system capable of suppressing stagnation of fuel between check valves arranged in a fuel filling path. The fuel tank system has the fuel filling path which supplies fuel to a fuel tank through a filling port, and at least two check valves arranged in series in the fuel filling pat. The valve opening pressure of one check valve arranged on the fuel tank side is set to be smaller than that of the other check valve arranged on the filling port side.

Abstract: The fuel cell system is provided which detects a freeze among specific components and portions thereof by evaluating various conditions upon starting operation of the fuel cell system. If a freeze is detected through those evaluations, the start of the system is prohibited in order to prevent some deterioration in the fuel cell system.

Abstract: Water electrolysis device determining stable isotopic composition of water and a water electrolysis method for stable isotopic composition of water capable of analyzing many samples easily, safely and at low cost in very short time, and rapidly analyzing 17O are provided. The water electrolysis device performing mass spectrometry of hydrogen or oxygen stable isotopic composition includes a proton exchange membrane of fluorocarbon polymer plated non-electrolytically with platinum, iridium, rhodium or iridium-rhodium alloy, and a cathode and an anode of porous titanium plated with platinum and sandwiching the proton exchange membrane, wherein water electrolyzes by introduction into the anode side chamber and supplying DC current between the anode and the cathode, and oxygen gas generated at the anode and hydrogen gas generated at the cathode respectively flows into an isotope ratio mass spectrometer.

Abstract: The fuel cell system is provided which detects a freeze among specific components and portions thereof by evaluating various conditions upon starting operation of the fuel cell system. If a freeze is detected through those evaluations, the start of the system is prohibited in order to prevent some deterioration in the fuel cell system.

Abstract: The present invention provides a fuel cell system capable of accurately controlling the pressure of fuel gas supplied to the fuel cell, the fuel cell system comprising: a fuel gas supply line (SL) which supplies the fuel gas from a fuel gas supply source (11) to the fuel cell (10); pressure-regulating means (RG) provided on the fuel gas supply line (SL) and for regulating the pressure of the fuel gas supplied from the fuel gas supply source (11); and a circulation route (R) which returns the fuel gas discharged from the fuel cell (10) to the fuel gas supply line (SL), wherein the circulation route (R) is connected to the fuel gas supply line (SL) such that the fuel gas is returned thereto in the upstream of the pressure-regulating means (RG).

Abstract: A fuel system with a high power generation efficiency in which drive means can be reduced in size. The fuel cell system of the present invention is equipped with a fuel cell (FC) for generating power by circulating a fuel gas and comprises a circulation route (R) for circulating the fuel gas, drive means (PM) provided in the circulation route (R) and serving to circulate the fuel gas, and pressure regulating means (RG) for regulating the pressure of the fuel gas in the circulatory route (R). A drive characteristic of the drive means (PM) is determined based on the generated power required for the fuel cell, and the pressure regulation quantity of the pressure regulating means (RG) is determined to make up the deficiency of the drive quantity based on the determined drive characteristic of the drive means (PM).

Abstract: This invention provides a moving object having a fuel cell system, which is capable of preventing the entry of fuel gas into a cabin even if the leakage of the fuel gas occurs. The moving object, having the fuel cell system (1), has an air introduction mechanism (5) for introducing air from the outside of the moving object into a cabin space inside the moving object, wherein an air introduction port (50) for the air introduction mechanism (5) is formed a given distance apart from the fuel cell system (1), so that gas leaking from the fuel cell system (1) does not reach the air introduction port (50).

Abstract: A fuel cell system (10) of the present invention comprises determination means (50) for consuming a fuel gas present at a gas leak detection portion of a fuel gas supply system (31, 32) through the power generation of a fuel cell (20), and performing a gas leak determination on the basis of a pressure decrease margin of the fuel gas present at the gas leak detection portion, and comprises discharge means (H51) for reducing the pressure at the gas leak detection portion by purging the fuel gas present at the gas leak detection portion to the outside of the fuel gas supply system (31, 32). By not only consuming the fuel gas present at the gas leak detection portion through power generation, but also purging the fuel gas to the outside of the fuel gas supply system, the pressure at the gas leak detection portion can be brought close to a target pressure within a short time period, and the gas leak determination can be performed in a short period of time and with a high level of precision.

Abstract: A fuel cell system is provided with a judgment unit which makes a gas leak judgment based on a pressure drop of fuel gas in a gas leak detection portion by consuming the fuel gas in the gas leak detection portion of the fuel gas supply system by electric power generation of a fuel cell and causing auxiliary devices to consume the electric power generated by the fuel cell, and comprises a control unit which increases consumption of the fuel gas in the gas leak detection portion by increasing the electric power consumption of the auxiliary devices. With this arrangement, where the electric power generation of the fuel cell and the electric power consumption of the auxiliary devices result in an insufficient consumption of the fuel gas, the consumption of the fuel gas can be accelerated by increasing the electric power consumption of the auxiliary devices. Thereby, a rapid gas leak judgment can be achieved.

Abstract: A gas leak detection device for a fuel cell system equipped with a main valve (SV1) in a fuel gas supply source (11), comprising a shutdown valve (SV2) provided in a fuel gas supply channel downstream of the main valve (SV1), pressure monitoring devices (p1, p2, 20) for monitoring a pressure in the fuel gas supply channel between the main valve and the shutdown valve, a depressurization treatment devices (10, 15, SV5) for depressurizing the inside of the fuel gas supply channel, and a determination device (20) for monitoring a variation of pressure in a sealed space of the fuel gas supply channel formed between the main valve and the shutdown valve after the main valve and the shutdown valve have been closed and determining the operation state of the main valve based on the variation of pressure in the sealed space. In the depressurization treatment, the fuel gas supply channel is depressurized until the pressure enters a pressure range in which the pressure can be monitored in the pressure monitoring device.

Abstract: A fuel cell system is provided with a fuel cell (20) which generates electricity by a chemical reaction between a fuel gas supplied to an anode side of the fuel cell and an oxidization gas supplied to a cathode side of the fuel cell; estimating means (50) for estimating whether there is a possibility that a chemical short is occurring in the fuel cell when supply of the fuel gas and the oxidization gas to the fuel cell is stopped; and scavenging means (12) for supplying a scavenging gas to the cathode side when it has been estimated that there is a possibility that the chemical short is occurring.

Abstract: An hybrid system (10) of the invention includes a fuel cell unit (20) that generates electricity upon being supplied with reaction gases, a secondary battery (40) that stores electric power generated by the fuel cell unit (20), and an electric power control device (30) that controls distribution of electric power supplied to electric power loads (M1, M2) from the fuel cell unit (20) and the secondary battery (40). The secondary battery (40) has a capacity characteristic of being able to supply the requested amounts of electric power of the electric power loads (M1, M2) at least during an early stage following restart of operation of the fuel cell unit (20) from a state of pause of operation.