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513 results about "Hydrogen tank" patented technology

A Hydrogen tank (other names- cartridge or canister) is used for hydrogen storage. The first type IV hydrogen tanks for compressed hydrogen at 700 bars (70 MPa; 10,000 psi) were demonstrated in 2001, the first fuel cell vehicles on the road with type IV tanks are the Toyota FCHV, Mercedes-Benz F-Cell and the GM HydroGen4.

Hydrogen station

Provided is a hydrogen station that is used to charge hydrogen to a hydrogen tank mounted on a vehicle, the hydrogen station including: a compressor that compresses hydrogen; a lubricant cooling unit that cools the lubricant of the compressor while circulating the lubricant; a hydrogen cooling unit that is capable of cooling hydrogen which is not charged to the hydrogen tank mounted on the vehicle yet and is compressed by the compressor; a sensor that detects whether the vehicle approaches or reaches the hydrogen station; and a startup unit that starts up at least one of the lubricant cooling unit and the hydrogen cooling unit by a signal from the sensor.
Owner:KOBE STEEL LTD

Safety valve device, valve apparatus, high-pressure gas tank, and vehicle

A safety valve device has a safety valve body configured to include a valve mechanism opened at a temperature of or over a preset reference temperature. The safety valve device also includes a gas flow path arranged to make a flow of hydrogen flowing out of a hydrogen tank via the safety valve body in a valve open position of the valve mechanism, and a discharge pipe configured to have a hydrogen discharge opening and arranged to discharge the hydrogen flowing through the gas flow path to the outside. The hydrogen discharge opening of the discharge pipe is formed to discharge the hydrogen in an oblique direction relative to a direction of an axial center of the gas flow path. The discharge pipe also has a groove formed to apply an input rotational force to the discharge pipe and thereby rotate the discharge pipe around the axial center of the gas flow path. In a typical application of a high-pressure gas tank with such a safety valve device mounted on a vehicle, this arrangement of the safety valve device enables the discharge direction of the high-pressure gas that is discharged from the safety valve device to be readily adjusted.
Owner:TOYOTA JIDOSHA KK +1

Operation control of fuel cell system

InactiveUS20060110640A1Reducing pressure of hydrogenPotent effectFuel cells groupingFuel cell auxillariesElectric forceEngineering
In a fuel cell system of the invention, a pressure regulator is provided in the pathway of a hydrogen supply conduit that connects a hydrogen tank to a fuel cell stack. An anode off gas discharged from the fuel cell stack is recirculated through a recirculation pipe into the hydrogen supply conduit. A hydrogen pump is provided in the pathway of the recirculation pipe to increase the pressure of the anode off gas. A control unit of the fuel cell system includes a hydrogen pump control module, an abnormality diagnosis module, and an atmospheric pressure-based correction module. The hydrogen pump control module regulates the rotation speed of the hydrogen pump corresponding to a power demand to be output from the fuel cell system. The abnormality diagnosis module detects an abnormal state, based on a result of determination of whether the pressure of the hydrogen supply measured by a pressure sensor is within a certain range defined by two preset threshold values. The atmospheric pressure-based correction module corrects the rotation speed of the hydrogen pump and the threshold values used for abnormality diagnosis according to the atmospheric pressure measured by an atmospheric pressure sensor. Even in the state of unstable output of the pressure regulator with a variation of the atmospheric pressure, such correction compensates for the varying flow rate of the hydrogen supply to the fuel cell stack and thus effectively prevents misjudgment of abnormality diagnosis. Namely the technique of the invention reduces the potential effect of the varying pressure of the hydrogen supply to the fuel cell system with a variation of the atmospheric pressure.
Owner:TOYOTA JIDOSHA KK

Hydrogen closed circulation system used for fuel cell

The invention relates to a hydrogen closed circulation system used for a fuel cell. The system comprises a hydrogen tank, a pressure-reducing valve, a ratio switch solenoid valve, an ejector pump, a fuel cell stack, a hydrogen discharging solenoid valve, a hydrogen circulation pump and voltage-regulation tanks (A,B), wherein the hydrogen tank is connected to the hydrogen inlet of the fuel cell stack through the pressure-reducing valve, the ratio switch solenoid valve and the ejector pump sequentially; the hydrogen outlet of the fuel cell stack is connected with the hydrogen discharging solenoid valve; the voltage-regulation tank A is arranged between the ejector pump and the hydrogen inlet of the fuel cell stack; the voltage-regulation tank B is connected with the hydrogen discharging solenoid valve; the hydrogen circulation pump is connected with the voltage-regulation tanks (A,B) respectively; hydrogen enters the voltage-regulation tank A for water vapor separation and then enters the fuel cell stack for reaction; excessive hydrogen is discharged to the voltage-regulation tank B by the hydrogen discharging solenoid valve; and the hydrogen in the voltage-regulation tank B is returned to the voltage-regulation tank A by the hydrogen circulation pump. Compared with the prior art, the hydrogen closed circulation system has the advantages of small self-consuming power, high hydrogen utilization ratio and the like.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1

New energy automobile fuel cell system, working method, hydrogen inlet flow calculation method and efficiency evaluation method

ActiveCN111244506AIncrease net powerIncrease profitFuel cellsAir filterNew energy
The invention discloses a new energy automobile fuel cell system, a working method, a hydrogen inlet flow calculation method and an efficiency evaluation method, Belongs to the technical field of newenergy. Keys points of the new energy automobile fuel cell system are that the new energy automobile fuel cell system comprises an air supply system, a hydrogen supply system and a fuel cell stack, wherein the air supply system provides fresh air for the fuel cell stack, and the system comprises an air filter, a centrifugal air compressor, a gas heat exchanger, a humidifying and intercooling assembly, a throttle valve, a water segregator, a drain valve, a turbine and a back pressure valve; the hydrogen supply system provides fresh hydrogen for the fuel cell stack and comprises a hydrogen tank,a pressure reducing valve, an ejector, a water distributor, a water distribution valve, a nitrogen discharger, a nitrogen discharge valve, a first one-way valve, a circulating pump and a second one-way valve; and the fuel cell stack is a place where hydrogen and air react, and chemical energy is converted into electric energy to provide kinetic energy for accessory mechanisms and loads. The invention aims to provide the new energy automobile fuel cell system, the working method, the hydrogen inlet flow calculation method and the efficiency evaluation method, the stability of the fuel cell isimproved, and the efficiency of the fuel cell is conveniently calculated and evaluated.
Owner:擎能动力科技(苏州)有限公司
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