Abstract: A charge support system includes: a manager information acquiring section that acquires manager information as information regarding a manager of a private charge facility; an applicant-for-use information acquiring section that acquires applicant-for-use information as information regarding an applicant for use who wants to use the private charge facility; and a permission-for-charge-facility-use determining section that determines whether or not a predetermined permission-for-use condition is established between the applicant for use and the manager based on the applicant-for-use information and the manager information upon receipt of application-for-charge-facility-use information from a user terminal, the application-for-charge-facility-use information being for applying for use of the private charge facility, and that transmits permission-for-use information to the user terminal when the permission-for-use condition is established, the permission-for-use information being for making notification of permi

Abstract: Provided is a vehicle management system configured to manage a plurality of vehicles used at an office. Each of the vehicles includes a battery. The vehicle management system includes: a first prediction control unit configured to cause a prediction for an amount of surplus power generated at the office on a non-work day of the office; a second prediction control unit configured to cause a prediction for a power capacity that can be accumulated by each of the plurality of vehicles at the office on the non-work day; and a selection control unit configured to cause a to-be-retained vehicle to be retained at the office on the non-work day to be selected from among the plurality of vehicles on the basis of the amount of surplus power generated at the office on the non-work day and the power capacity.

Abstract: A contract management system including a plurality of computers that operate such that each computer holds the same distributed ledger and a plurality of terminal apparatuses includes: a ledger management unit that records a block including received transaction data in the distributed ledger; and an association-information management unit that, when the ledger management unit records in the distributed ledger a block including transaction data including a smart contract for execution of a contract, generates association information that associates a contract address where the smart contract is stored with contract identification information.

Abstract: A power supply management system includes: a charge history information acquisition unit for acquiring charge history information on a charge history of a moving body storage battery; a transmission and distribution network power cost information acquisition unit for acquiring transmission and distribution network power cost information; a stored electric charge value evaluation unit for evaluating a value of an electric charge stored in the moving body storage battery, based on charge history information; and a power supply control unit for determining which of first supply power, discharged from the moving body storage battery, and second supply power, transmitted from a transmission and distribution network, is used by power supply processing, as electric power to be supplied to an electric load, based on a cost of the second supply power and a value of an electric charge, stored in the moving body storage battery.

Abstract: A electric power control system for controlling charge-discharge operation of a battery mounted on a vehicle includes: a plurality of computers, each operating so as to hold a distributed ledger identical to each other; a generation unit for generating transaction data including information related to charge-discharge operation of the battery; a ledger management unit for receiving the transaction data, and for recording the received transaction data in the distributed ledger; and a control unit for controlling charge-discharge operation of the battery, wherein: information related to the charge-discharge operation includes intention information that is information on an intention of a user of the vehicle regarding the charge-discharge operation; and the control unit executes the charge-discharge operation under an operating condition reflecting an intention of the user based on the intention information included in the transaction data recorded in the distributed ledger.

Abstract: A power storage management system includes: a travel plan recognition unit for recognizing a travel plan of a user; a moving body waiting period estimation unit for estimating a waiting period based on the travel plan, the waiting period being a period through which the user is to leave an electric moving body in a predetermined moving body waiting area, the electric moving body being used by the user; and a moving body charge-discharge control unit for charging or discharging a storage battery in the waiting period, the storage battery being provided in the electric moving body left in the moving body waiting area.

Abstract: Provided is a charging system including: a second power transmission unit; a moving mechanism that moves the second power transmission unit within a moving area including prescribed ranges within a plurality of parking spaces; and a power transmission control unit that, when a first electric vehicle is parked in a first parking space as one of a plurality of parking spaces, moves the second power transmission unit into the prescribed range of the first parking space by the moving mechanism to cause the first power transmission unit mounted to a first electric vehicle and the second power transmission unit to face each other so as to transmit power to the first power transmission unit from the second power transmission unit wirelessly to execute vehicle charging processing for charging the first electric vehicle.

Abstract: A hydrogen production apparatus includes a water electrolysis unit, a storage unit, a supply unit, and an electrical equipment unit. A first ventilation flow path causes air to flow through an electrical equipment chamber and a storage chamber, which is formed by at least one of a water electrolysis chamber, a storage chamber, and a supply chamber. A second ventilation flow path causes air to flow through at least one of the water electrolysis chamber, the storage chamber, and the supply chamber that is not the storage chamber. The electrical equipment chamber is positioned farthest upstream in the first ventilation flow path, and the first ventilation flow path and the second ventilation flow path are separated from each other.

Abstract: A hydrogen station includes a state management apparatus that is connected to each of a plurality of systems and manages the states of the plurality of systems, and a safety control apparatus that is formed separately from the main equipment and is connected to the state management apparatus. The state management apparatus performs first watchdog control to check operations of the plurality of systems and the safety control apparatus performs second watchdog control to check an operation of the state management apparatus. The state management apparatus or the safety control apparatus cuts off the power supply from the safety control apparatus to the main equipment if an abnormality is recognized by the second watchdog control, even if the first watchdog control indicates correct operation.

Abstract: A hydrogen station includes a state management apparatus that is connected to each of a plurality of systems and manages the states of the plurality of systems, and a safety control apparatus that is formed separately from the main equipment and is connected to the state management apparatus. The state management apparatus performs first watchdog control to check operations of the plurality of systems and the safety control apparatus performs second watchdog control to check an operation of the state management apparatus. The state management apparatus or the safety control apparatus cuts off the power supply from the safety control apparatus to the main equipment if an abnormality is recognized by the second watchdog control, even if the first watchdog control indicates correct operation.

Abstract: A hydrogen production apparatus includes a water electrolysis unit, a storage unit, a supply unit, and an electrical equipment unit. A first ventilation flow path causes air to flow through an electrical equipment chamber and a storage chamber, which is formed by at least one of a water electrolysis chamber, a storage chamber, and a supply chamber. A second ventilation flow path causes air to flow through at least one of the water electrolysis chamber, the storage chamber, and the supply chamber that is not the storage chamber. The electrical equipment chamber is positioned farthest upstream in the first ventilation flow path, and the first ventilation flow path and the second ventilation flow path are separated from each other.

Abstract: A water electrolysis system includes a water electrolysis apparatus, an electric component, and a casing. The electric component is to operate the water electrolysis apparatus. The casing includes a housing chamber, an electric component chamber, and a buffering chamber. The housing chamber has a first ventilation air inlet to introduce external air into the housing chamber and houses the water electrolysis apparatus. The electric component chamber has a second ventilation air inlet to introduce the external air into the electric component chamber and houses the electric component. The first ventilation air inlet and the second ventilation air inlet are separate from each other. The buffering chamber is in communication with the first ventilation air inlet and the second ventilation air inlet. An air pressure in the buffering chamber is to be maintained at atmospheric pressure.

Abstract: A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit.

Abstract: A water electrolysis system includes a water electrolysis apparatus, an electric component, and a casing. The electric component is to operate the water electrolysis apparatus. The casing includes a housing chamber, an electric component chamber, and a buffering chamber. The housing chamber has a first ventilation air inlet to introduce external air into the housing chamber and houses the water electrolysis apparatus. The electric component chamber has a second ventilation air inlet to introduce the external air into the electric component chamber and houses the electric component. The first ventilation air inlet and the second ventilation air inlet are separate from each other. The buffering chamber is in communication with the first ventilation air inlet and the second ventilation air inlet. An air pressure in the buffering chamber is to be maintained at atmospheric pressure.

Abstract: A high pressure water electrolysis system includes a high pressure water electrolysis device, a hydrogen storage device, a high pressure hydrogen pipe, a branch pipe, a non-return valve, a pressure detector, and a controller. The controller includes a threshold storage device, a threshold determination device, and a solenoid valve opening/closing operation device. The threshold storage device is configured to store a first threshold of a pressure value detected by the pressure detector and a second threshold lower than the first threshold. The threshold determination device is configured to determine whether or not the pressure value detected by the pressure detector has reached the second threshold. The solenoid valve opening/closing operation device is configured to open and close a solenoid valve if it is determined that the pressure value detected by the pressure detector has reached the second threshold.

Abstract: A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit.

Abstract: A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit.

Abstract: A water electrolysis system includes a water electrolysis apparatus for electrically decomposing water to generate oxygen and high-pressure hydrogen having a pressure higher than the oxygen, a gas-liquid separator connected to a hydrogen pipe which discharges the high-pressure hydrogen from the water electrolysis apparatus, for separating water contained in the high-pressure hydrogen, a high-pressure hydrogen outlet pipe for delivering the high-pressure hydrogen separated from water from the gas-liquid separator, a water drainage line for discharging the water from the gas-liquid separator, and a gas depressurizing line connected to the gas-liquid separator, for degassing the gas-liquid separator before the water is discharged from the water drainage line into the water drainage line.

Abstract: A water electrolysis system includes a water electrolysis apparatus including an electrolyte membrane. The electrolyte membrane is provided between an anode and a cathode. The water electrolysis apparatus is configured to generate oxygen on a side of the anode and hydrogen on a side of the cathode at a pressure higher than a pressure of the oxygen through electrolysis of water. A gas-liquid separation apparatus separates unreacted water and produced gas discharged from a water outlet of the water electrolysis apparatus. A water circulation apparatus circulates the water between the water electrolysis apparatus and the gas-liquid separation apparatus. The water circulation apparatus includes a return pipe having an on-off valve and connecting the water outlet and the gas-liquid separation apparatus. A hydrogen exhaust pipe is connected to the return pipe between the water outlet and the on-off value and extends upward from the water electrolysis apparatus.

Abstract: A high pressure water electrolysis system includes a high pressure water electrolysis device, a hydrogen storage device, a high pressure hydrogen pipe, a branch pipe, a non-return valve, a pressure detector, and a controller. The controller includes a threshold storage device, a threshold determination device, and a solenoid valve opening/closing operation device. The threshold storage device is configured to store a first threshold of a pressure value detected by the pressure detector and a second threshold lower than the first threshold. The threshold determination device is configured to determine whether or not the pressure value detected by the pressure detector has reached the second threshold. The solenoid valve opening/closing operation device is configured to open and close a solenoid valve if it is determined that the pressure value detected by the pressure detector has reached the second threshold.