System and method for generating high pressure hydrogen

System for generating high pressure hydrogen by direct electrolysis of pure water using an electrolysis cell comprising polyelectrolyte membranes,

• wherein an electrolysis cell disposed in hydrogen gas generated and stored in a high pressure vessel that serves as a storage tank of hydrogen generated and electrolysis pure water stored in another high pressure vessel that communicates with the electrolysis cell and serves as a storage tank of oxygen generated,
• wherein the system has pressure control means for controlling a differential pressure between the inner pressure of the high pressure vessel for storing hydrogen and the inner pressure of the high pressure vessel for storing oxygen to a pressure below the pressure resistance of the electrolysis cell,
• wherein the pressure control means is provided in the pipe line communicating with pure water in respective high pressure vessels and adjusts the pressure of the vessels with a pressure controller containing a slider sliding in response to the differential pressure of pure water in respective high pressure vessels, and
• wherein the pressure controller has a main unit and a position sensor for sensing the position of an external slider, and adjusts the pressure of high pressure vessels by allowing pure water in the respective high pressure vessels to move, and the main unit comprising:
• a hollow cylinder made of a non-magnetic material with one end communicating with the pure water in the high pressure vessel for storing hydrogen and the other end communicating with the pure water in the high pressure vessel for storing oxygen;
• an internal slider made of a magnetic material for blocking the pure water and sliding in close contact with an inner surface of the hollow cylinder;
• and
• an external slider made of a magnetic material and sliding in close contact with the outer surface of the hollow cylinder.