Hydrogen fuel cell power generation device and hydrogen fuel cell heat exchanger

Abstract

The invention discloses a hydrogen fuel cell power generation device and a hydrogen fuel cell heat exchanger. The hydrogen fuel cell heat exchanger comprises a heat exchange container, a first heat exchange pipeline, a second heat exchange pipeline, a first valve body and a second valve body, main bodies of the first heat exchange pipeline and the second heat exchange pipeline are arranged in theheat exchange container; the first heat exchange pipeline is provided with a first heat exchange pipeline inlet and a first heat exchange pipeline low-temperature outlet, and a first valve body is arranged in the first heat exchange pipeline; the second heat exchange pipeline is provided with a second heat exchange pipeline inlet and a second heat exchange pipeline high-temperature outlet, and a second valve body is arranged in the second heat exchange pipeline; the contact area of the second heat exchange pipeline and the medium in the heat exchange container is smaller than that of the firstheat exchange pipeline and the medium in the heat exchange container; or / and the heat exchange efficiency of the material of the second heat exchange pipeline is smaller than that of the material ofthe first heat exchange pipeline. According to the hydrogen fuel cell power generation device and the hydrogen fuel cell heat exchanger, the working stability of the hydrogen fuel cell can be improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen fuel cells, and relates to a hydrogen fuel cell power generation device, in particular to a hydrogen fuel cell heat exchanger. Background technique [0002] As governments and people of various countries pay more and more attention to the sustainable development of energy, clean energy has received great attention in recent years, and hydrogen energy is one of them. [0003] The use of hydrogen energy is not yet mature. The market-oriented products mainly include Toyota's Mirai hydrogen fuel cell vehicle; the current hydrogen supply method for hydrogen fuel cell vehicles is to provide hydrogen through hydrogen tanks. Its disadvantage is high cost. Hydrogen is delivered from the factory, compressed into a large hydrogen tank, transported to a hydrogen refueling station, decompressed and transported to the user's hydrogen tank, and then pressurized in the user's hydrogen tank. This makes this hydro...

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Problems solved by technology

[0008] In addition, hydrogen fuel cells are generally suitable for power generation at -5°C to 20°C. When used in winter, due to the low temperature, the temperature of hydrogen drops during the process of transporting hydrogen from the hydrogen production device to the hydrogen fuel cell. The optimum operating temperature cannot be reached, causing the hydrogen fuel cell to fail to work properly

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