Patent application number | Description | Published |
20120090989 | WATER ELECTROLYSIS SYSTEM - A water electrolysis system includes a water electrolysis apparatus, a low-pressure gas-liquid separator, a high-pressure gas-liquid separator, water pipe, and a decompression water supply device. The high-pressure gas-liquid separator separates the hydrogen received from a cathode of the water electrolysis apparatus and permeation water that has permeated from the anode. The water pipe connects the high-pressure gas-liquid separator and the low-pressure gas-liquid separator and is used for returning the water from the high-pressure gas-liquid separator to the low-pressure gas-liquid separator. The decompression water supply device is arranged at the water pipe and is to decompress the water discharged from the high-pressure gas-liquid separator. | 04-19-2012 |
20120255867 | WATER ELECTROLYSIS SYSTEM AND METHOD OF OPERATING WATER ELECTROLYSIS SYSTEM - A water electrolysis system includes a water electrolysis apparatus, a gas-liquid separating apparatus, a hydrogen supply line, a water level detector, and a current regulator. The water electrolysis apparatus is to electrolyze water to generate oxygen and high-pressure hydrogen having a higher pressure than a pressure of the oxygen. The gas-liquid separating apparatus is disposed upstream of the water electrolysis apparatus in a gravitational direction to separate moisture contained in the high-pressure hydrogen. The hydrogen supply line is to supply the high-pressure hydrogen discharged from the water electrolysis apparatus to the gas-liquid separating apparatus. The water level detector is configured to detect a water level in the gas-liquid separating apparatus. The current regulator is configured to regulate a current to be applied to the water electrolysis apparatus based on the water level detected by the water level detector in the gas-liquid separating apparatus. | 10-11-2012 |
20150122637 | DIFFERENTIAL PRESSURE WATER ELECTROLYSIS APPARATUS - A differential pressure water electrolysis apparatus includes a cell unit, a first end plate, a second end plate, and a pressing mechanism. The pressing mechanism is provided between the first end plate and a first end of the cell unit to press the cell unit in a stacking direction and includes a first corrosion-resistant member, a second corrosion-resistant member, a third corrosion-resistant member, and a pressure-resistant member. The first corrosion-resistant member is connected to the first end plate. The second corrosion-resistant member is engaged with the first end of the cell unit and is movable in the stacking direction. The third corrosion-resistant member is connected to the first corrosion-resistant member or the second corrosion-resistant member and covers an outer peripheral part of the first corrosion-resistant member and an outer peripheral part of the second corrosion-resistant member to provide a fluid introduction chamber communicating with a cathode side. | 05-07-2015 |
20160060771 | DIFFERENTIAL PRESSURE WATER ELECTROLYSIS SYSTEM - A differential pressure water electrolysis system includes high pressure water electrolysis cells stacked and fastened in a stacking direction. Each of the high pressure water electrolysis cells includes an electrolyte membrane, an anode feed conductor, a cathode feed conductor, an anode separator, a cathode separator, an elastic member, a hydrogen manifold, a conductive member, a sealing member, a conductive sheet, and an insulation member. The conductive member is disposed between the cathode separator and the electrolyte membrane to provide the hydrogen manifold. The conductive sheet is disposed so as to extend from a first portion between the conductive member and the electrolyte membrane to a second portion between the cathode feed conductor and the elastic member. The insulation member is disposed in a center portion of the cathode feed conductor and between the conductive sheet and the electrolyte membrane. | 03-03-2016 |
20160083854 | DIFFERENTIAL PRESSURE WATER ELECTROLYSIS APPARATUS - A differential pressure water electrolysis apparatus includes high-pressure water electrolysis cells and a pressing mechanism. The high-pressure water electrolysis cells are stacked in a stacking direction. Each of the high-pressure water electrolysis cells includes an electrolyte membrane, a member, an anode current collector, a cathode current collector, an anode separator, and a cathode separator. The electrolyte membrane has a first side and a second side opposite to the first side in the stacking direction. The member has a surface which has an opening and which is in contact with the electrolyte membrane. The anode current collector is disposed on the first side of the electrolyte membrane. The cathode current collector is disposed on the second side of the electrolyte membrane. The anode separator has an anode chamber in which the anode current collector is accommodated. The pressing mechanism is to press the high-pressure water electrolysis cells in the stacking direction. | 03-24-2016 |
20160122885 | DIFFERENTIAL PRESSURE WATER ELECTROLYSIS SYSTEM - A differential pressure water electrolysis system includes high-pressure water electrolysis cells, first and second end plates, and a high pressure hydrogen manifold. The high pressure hydrogen manifold is provided to distribute hydrogen in a stacking direction. Each of the high-pressure water electrolysis cells includes an electrolyte membrane, an anode current collector, a cathode current collector, an anode separator, a cathode separator, an elastic member, a manifold member, and a cylindrical porous member. The manifold member is disposed between the anode separator and the electrolyte membrane to surround the high pressure hydrogen manifold and includes a seal chamber in which a sealing member is disposed to encircle and seal the high pressure hydrogen manifold. The cylindrical porous member is disposed in the manifold member between the seal chamber and the high pressure hydrogen manifold. | 05-05-2016 |
20160130708 | DIFFERENTIAL PRESSURE WATER ELECTROLYSIS SYSTEM - A differential pressure water electrolysis system includes high-pressure water electrolysis cells and a high pressure hydrogen manifold. The high-pressure water electrolysis cells are stacked in a stacking direction. Each of the high-pressure water electrolysis cells includes an electrolyte membrane, an anode current collector, a cathode current collector, a tabular anode separator, a tabular cathode separator, a sealing member, and a resin frame member. The resin frame member is disposed between the tabular anode separator and the tabular cathode separator so as to surround the sealing member and the anode current collector. The resin frame member includes a water supply port to introduce water for electrolysis and a water discharge port to discharge a surplus of the water after electrolysis. The high pressure hydrogen manifold is provided so as to distribute hydrogen in the stacking direction and so as to be encircled by the sealing member. | 05-12-2016 |