Water electrolysis device

The utility model provides a water electrolysis device which has a good and uniform heat dissipation effect. The water electrolysis device includes: a plurality of battery cells stacked on each other, each of the plurality of battery cells including a first separator, a second separator, and an electrolyte membrane, the first separator and the second separator being disposed on both sides of the electrolyte membrane, respectively; a power source that electrolyzes water supplied to the first separator by causing an electric current to flow between the first separator and the second separator; and a water passage for supplying water to the first separator and discharging water from the first separator, in which a thickness of one of the plurality of battery cells located at a central position is greater than a thickness of other of the plurality of battery cells in a stacking direction of the plurality of battery cells. 本实用新型提供一种水电解装置，具有良好且均匀的散热效果。水电解装置包括：相互层叠的多个电池单元，每一所述多个电池单元包括第一隔板、第二隔板及电解质膜，所述第一隔板及所述第二隔板分别配置