Water electrolysis system

A technology of water electrolysis and electrolysis of water, which is applied in the field of water electrolysis systems, can solve the problems of being unable to withstand high pressure hydrogen pressure and the reduction of detection accuracy of optical sensors, and achieve good gas-liquid separation, increase strength and rigidity, and accurately measure water levels.

Inactive Publication Date: 2012-05-23
HONDA MOTOR CO LTD
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Problems solved by technology

Therefore, there is a problem that the detection accuracy of the liquid level by the optical sensors 4a and 4b is greatly reduced.
Moreover, in Patent Document 1, the first gas-liquid separation tank 1a and the second gas-liquid separation tank 1b may not be able to withstand the pressure generated by high-pressure hydrogen

Method used

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Examples

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Embodiment Construction

[0070] Such as figure 1 As shown, the water electrolysis system 10 according to the first embodiment of the present invention includes a high-pressure water electrolysis device 14 supplied with pure water generated from municipal water via a pure water supply device 12, and electrolyzes the pure water And produce high-pressure hydrogen (higher pressure than oxygen pressure, for example, 1MPa~70MPa).

[0071] The water electrolysis system 10 is further equipped with: a gas-liquid separation device 18, which removes moisture contained in hydrogen derived from the high-pressure water electrolysis device 14 to the hydrogen lead-out path 16; a hydrogen dehumidification device (for example, a water adsorption device) 22, which removes moisture from The gas-liquid separation device 18 is led out to the hydrogen pipe 20 to absorb and remove the moisture contained in the hydrogen; the back pressure valve 24 is arranged downstream of the hydrogen dehumidification device 22, and the hig...

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Abstract

A water electrolysis system includes a high-pressure water electrolysis apparatus and a gas-liquid separation device. The gas-liquid separation device includes a block member which includes a gas-liquid separation opening and a water-level detection opening. The gas-liquid separation opening and the water-level detection opening extend substantially vertically and includes respective bottom portions which integrally communicate with a discharge pipe. The discharge pipe is disposed at a lower side portion of the block member. The water-level detection opening includes a top portion and a top water-level detection section. The block member further includes an inlet hole in which the hydrogen is introduced from the high-pressure water electrolysis device. The inlet hole is disposed at an upper side portion of the block member. The inlet hole is positioned above the top water-level detection section of the water-level detection opening.

Description

technical field [0001] The present invention relates to a water electrolysis system, which comprises: a high-pressure water electrolysis device that electrolyzes water to generate oxygen and hydrogen at a higher pressure than the oxygen; a gas-liquid separation device that discharges water from the high-pressure water electrolysis device and contains water The hydrogen is subjected to gas-liquid separation, and the hydrogen from which the moisture has been removed is supplied to a hydrogen pipe connected to the hydrogen filling unit, and the separated water is discharged to a drain pipe. Background technique [0002] For example, in order to generate electricity in a solid polymer fuel cell, hydrogen gas is used as a fuel gas. Usually, when producing hydrogen, a water electrolysis device is used. This water electrolysis device uses a solid polymer electrolyte membrane (ion exchange membrane) in order to decompose water to generate hydrogen (and oxygen). An electrode cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B9/00C25B15/08
CPCC25B1/12Y02E60/366C25B1/04C25B9/05Y02E60/36
Inventor 樽家宪司中泽孝治长冈久史仓品大辅
Owner HONDA MOTOR CO LTD
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