Design of inlet and outlet piping of integrated fuel cell stack

Abstract

The invention relates to an integrated fuel battery stack entrance tube, comprising a hydrogen entrance tube, an air entrance tube, and a cooling fluid entrance tube to form a pipeline with three inlets and three outlets, wherein the three-inlet three-outlet pipeline is square which is leaded out from the front and back ends of electric stack from a middle collecting plate of fuel battery stack, to be leaded out at same or different directions, contacted with the fuel battery stack, to be butted with the square tube via round-square interfaces of round tubes to be respectively connected with a hydrogen supply system, an air supply system and a cooling fluid supply system. Compared with prior art, the invention can save space, with easy package, waterproof and dustproof.

Description

technical field [0001] The invention relates to a fuel cell, in particular to the design of an integrated fuel cell stack inlet and outlet pipeline. Background technique [0002] An electrochemical fuel cell is a device that converts hydrogen fuel and oxidant into electrical energy and reaction products. The internal core component of the device is the membrane electrode (Membrane Electrode Assembly, referred to as MEA). The membrane electrode (MEA) is composed of a proton exchange membrane and two porous conductive materials, such as carbon paper, sandwiched between the two sides of the membrane. On the two boundary surfaces of the membrane and the carbon paper, there are even and finely dispersed catalysts for initiating electrochemical reactions, such as metal platinum catalysts. Conductive objects can be used on both sides of the membrane electrode to draw the electrons generated during the electrochemical reaction through an external circuit to form a current loop. ...

AI Technical Summary

Problems solved by technology

[0012] At present, in the proton exchange membrane fuel cell power generation system, the hydrogen supply, air supply, cooling and heat dissipation pipelines are all three-in and three-out circular pipelines, which occupy a lot of space. When these pipelines are combined with the fuel cell stack, especially When performing waterproof and dustproof packaging, since the battery stack is square, there will inevitably be space that is not fully utilized, resulting in waste, and packaging is more difficult

[0013] The patent of Shanghai Shenli Technology Co., Ltd. (invention patent number: 200410015888.2, utility model number 200420019588.7) "encapsulation of an integrated fuel cell stack" or the three-inlet and three-outlet pipelines of other integrated fuel cell stacks (as shown in Figure 1) occupies too much space

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