Patent ID: 8663434
Filing Date: 2014-03-04
Classification: C25B,H01M,Y02E,Y02T

Abstract:
1. A water electrolysis system comprising: a water electrolysis device to electrolyze water to generate oxygen and high-pressure hydrogen having a pressure higher than a pressure of the oxygen; a gas-liquid separator provided in a hydrogen pipeline through which the high-pressure hydrogen is discharged from the water electrolysis device, the gas-liquid separator being provided to separate water from the high-pressure hydrogen; a water-amount detector configured to detect an amount of water in the gas-liquid separator; a hydrogen storage device to store the high-pressure hydrogen discharged from the gas-liquid separator; a decompressing device to decompress and drain the gas-liquid separator when a water electrolysis process performed by the water electrolysis device is terminated; and a control device comprising: