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Water electrolysis system

A water electrolysis and water electrolysis technology, applied in the field of water electrolysis systems, can solve the problems of inability to withstand high-pressure hydrogen pressure, and the detection accuracy of optical sensors is reduced, and achieves the effects of good gas-liquid separation, improved strength and rigidity, and correct water level measurement.

Inactive Publication Date: 2014-02-26
HONDA MOTOR CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

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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PUM

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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 Patents(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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