CN204289606U - A kind of low platinum carrying capacity fuel cell membrane electrode stream plate - Google Patents

Abstract

The utility model relates to a kind of low platinum carrying capacity fuel cell membrane electrode stream plate, the flow path channel comprising stream plate plate body and be distributed on plate body; Described flow path channel has some row, is disposed in parallel in the upper end of stream plate plate body, is followed successively by first flow path passage, second paths ... N flow path channel, wherein N is the integer of >=2, and one end of flow path channel is inlet end, and the other end is outlet side; Described flow path channel is baffling passage, and its first time baffling before be dry passage section, thereafter passage is wet channel section, the side of the dry passage section of described first flow path passage is wet channel section, opposite side is the sidewall of stream plate plate body, and the both sides of the dry passage section of remaining flow path channel are wet channel section.The utility model has the advantage of: by the design of baffling passage, be respectively arranged with wet channel at the two ends of dry passage, thus moistening to dry passage, improve the reaction utilance of gas.

Description

A kind of low platinum carrying capacity fuel cell membrane electrode stream plate

Technical field

The utility model relates to a kind of fuel cell, particularly one low platinum carrying capacity fuel cell membrane electrode stream plate.

Background technology

Fuel cell (Fuel Cell) is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) chemical energy be present in fuel and oxidant being converted into electric energy.Fuel and air send fuel cell to respectively, and electricity is just produced rumly.It exteriorly has both positive and negative polarity and electrolyte etc., and as a storage battery, but it can not " accumulate " but one " power plant " in fact.

The main composition assembly of fuel cell is: electrode (Electrode), electrolyte membrance (Electrolyte Membrane) and current-collector (Current Collector) etc.Membrane electrode assembly is the proton exchange membrane (PEMs) of fuel cell, the combination of catalyst and electrode.This proton exchange membrane is pressed from both sides between electrodes, and catalyst embeds between them.The relative proton exchange membrane of electrode is insulation.

In membrane electrode assembly, hydrogen and oxygen pass into from the flow path channel the stream plate of base part, and more easily react under hydrogen and oxygen are in moistening environment, and the flow path channel used on existing market is some straight-through pipelines be set up in parallel usually, such gas is when by these straight-through pipelines, the pipeline being positioned at rear end can react generation water gradually due to hydrogen and oxygen, therefore wet channel can be gradually become, more contribute to the reaction of hydrogen and oxygen, and the pipeline being positioned at front end produces little steam owing to reacting or does not have water vapour to produce less at all, it is still dry passage, the utilance of gas is not high.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of can be good at and carries out moistening low platinum carrying capacity fuel cell membrane electrode stream plate to gas.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of low platinum carrying capacity fuel cell membrane electrode stream plate, and its innovative point is: the flow path channel comprising stream plate plate body and be distributed on plate body;

Described flow path channel has some row, is disposed in parallel in the upper end of stream plate plate body, is followed successively by first flow path passage, second paths ... N flow path channel, wherein N is the integer of >=2, and one end of flow path channel is inlet end, and the other end is outlet side;

Described flow path channel is baffling passage, and its first time baffling before be dry passage section, thereafter passage is wet channel section, the side of the dry passage section of described first flow path passage is wet channel section, opposite side is the sidewall of stream plate plate body, and the both sides of the dry passage section of remaining flow path channel are wet channel section.

Further, described flow path channel can take the shape of the letter U shape, also can be S-shaped.

The utility model has the advantage of: by the design of baffling passage, wet channel is respectively arranged with at the two ends of dry passage, utilize the permeability of membrane electrode itself, humidification is carried out to adjacent dry passage by the vapor permeation in wet channel, thus reach the effect moistening to dry passage, improve the reaction utilance of gas.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of low platinum carrying capacity fuel cell membrane electrode stream plate of the present utility model.

Embodiment

Schematic diagram is as shown in Figure 1 known, the flow path channel 4 that low platinum carrying capacity fuel cell membrane electrode stream plate of the present utility model comprises stream plate plate body 3 and is distributed on plate body.

Flow path channel 4 has some row, be disposed in parallel in the upper end of stream plate plate body 3, be followed successively by first flow path passage, second paths ... N flow path channel, wherein N is the integer of >=2, one end of flow path channel 4 is inlet end, and the other end of flow path channel 4 is outlet side.

Flow path channel 4 is baffling passage, and its first time baffling before be dry passage section 1, thereafter passage is wet channel section 2, the side of the dry passage section 1 of first flow path passage is wet channel section 2, opposite side is the sidewall of stream plate plate body 3, and the both sides of the dry passage section 1 of remaining flow path channel are wet channel section 2.

In the present embodiment, flow path channel 4 takes the shape of the letter U shape, and certainly, runner channel 4 has gone out can for outside U-shape, also can be S-shaped, or remaining similar shape.

When hydrogen and oxygen carry out in the process of reacting in membrane electrode, the hydrogen of reaction and oxygen is needed all to pass in flow path channel 4, and react in flow path channel 4, and the steam that hydrogen and oxygen reaction generate can due to the permeability of membrane electrode itself, penetrate in other flow path channel 4, and utilize these steam to carry out humidification to other flow path channel 4, like this when oxygen and hydrogen react in the passage that these are moistening, utilance and the reaction rate of gas are obtained for lifting.

More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (2)

1. a low platinum carrying capacity fuel cell membrane electrode stream plate, is characterized in that: the flow path channel comprising stream plate plate body and be distributed on plate body;

Described flow path channel has some row, is disposed in parallel in the upper end of stream plate plate body, is followed successively by first flow path passage, second paths ... N flow path channel, wherein N is the integer of >=2, and one end of flow path channel is inlet end, and the other end is outlet side;

Described flow path channel is baffling passage, and its first time baffling before be dry passage section, thereafter passage is wet channel section, the side of the dry passage section of described first flow path passage is wet channel section, opposite side is the sidewall of stream plate plate body, and the both sides of the dry passage section of remaining flow path channel are wet channel section.

2. low platinum carrying capacity fuel cell membrane electrode stream plate according to claim 1, is characterized in that: described flow path channel can take the shape of the letter U shape, also can be S-shaped.