摘要:
The hydrogen production apparatus according to an embodiment includes: a rectifier supplied with first electrical power from outside, and that outputs direct-current second electrical power; an electrolyzer supplied with the second electrical power and that carries out electrolysis of an alkaline aqueous solution; an electrolyte tank that retains the alkaline aqueous solution; a pump that circulates the alkaline aqueous solution between the electrolyzer and the electrolyte tank; a pure water tank that retains a pure water; a pure water pipe connected between the pure water tank and the electrolyte tank, allowing the pure water to be distributed from the pure water tank to the electrolyte tank; an inert gas cylinder that contains an inert gas; and a first valve connected between the inert gas cylinder and the pure water pipe, is the first valve being closed when the first electrical power is supplied, and being open when the first electrical power is not supplied. The inert gas is introduced into the pure water pipe by opening the first valve.
摘要:
A reversible fuel cell includes a positive electrode containing manganese dioxide, a negative electrode containing a hydrogen storage material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte. Each of the negative electrode and the positive electrode is an electrode for power generation and is also an electrode that applies electrolysis to the electrolyte using electric current to be fed from the outside. This cell is capable of storing electric energy to be supplied at the time of overcharge by converting the electric energy into gas, and is also capable of reconverting the gas into electric energy in order to utilize the electric energy. Accordingly, there are provided a reversible fuel cell and a reversible fuel cell system each of which is excellent in energy utilization efficiency, energy density and load following capability.
摘要:
An energy network is provided. An embodiment includes a network having a plurality of power stations and a plurality of loads interconnected by an electricity grid. The loads include electrolysers. The network also includes a controller that is connected to both the stations and the loads. The controller is operable to vary the available power from the power stations and/or adjust the demand from the electrolysers to provide a desired match of availability with demand and produce hydrogen as a transportation fuel with specific verifiable emission characteristics.
摘要:
There are provided: a solid polymer power generation or electrolysis method that does not require injection of energy from the outside and maintenance of a high temperature, and is capable of converting carbon dioxide to a useful hydrocarbon while producing energy, controlling the production amounts of the hydrocarbons or the like and a ratio sorted by kind of the hydrocarbons, improving utilization efficiency of a product, and simplifying equipment for separation and recovery; and a system for implementing the solid polymer power generation or electrolysis method. Carbon dioxide is supplied to the side of one electrode 111 of a reactor 110 having a membrane electrode assembly 113, hydrogen is supplied to the side of the other electrode 112, and the amounts of the hydrocarbons produced per unit time and the ratio sorted by kind of the hydrocarbons are changed by controlling a power generation voltage of the reactor 110.
摘要:
An energy unit in accordance with an embodiment of the present application stores at least water and hydrogen. The energy unit includes an electrolysis component operable to provide hydrogen from the water, a hydrogen storage component operable to safely and stably store hydrogen in solid form and a fuel cell component operable to produce electricity from the hydrogen. The energy unit may be grouped with other like energy units to provide constant power for desired applications.
摘要:
Disclosed herein are a battery pack system to supply current necessary to operate an external device, the battery pack system including a battery module including a plurality of battery cells which can be charged and discharged, the battery module to supply power to the external device, a temperature sensor to detect the temperature of the battery module, an auxiliary power unit to supply a charge and discharge pulse current to the battery module, and a controller to connect the auxiliary power unit to the battery module so that the charge and discharge pulse current is supplied to the battery module when a measured temperature (T bat ) of the battery module is less than a set temperature (T crit ) based on information detected by the temperature sensor before the battery module is electrically connected to the external device and to interrupt the supply of the charge and discharge pulse current to the battery module when the temperature of the battery module becomes equal to or greater than the set temperature (T crit ) and an operating method of the same.
摘要:
During power reduction transitions of a fuel cell power plant, the excess electric energy generated by consumption of reactants is extracted, during one or more periods of time, by a voltage limiting device control (200) in response to a controller (185) as i) energy dissipated in a resistive auxiliary load or ii) as energy applied to an energy storage system (201 ) (a battery), in boost and buck embodiments. The controller operates the voltage limiting device control in response to the positive time derivative of the voltage of one or more of the fuel cells exceeding a predetermined limiting value.