Pipe-line design for fully using space of integrated fuel cell pile

Abstract

This invention relates to the layout of full use of the space of integrated fuel cell group. The layout comprises: air inlet tube (AIT), hydrogen inlet tube (HIT), cooling fluide inlet tube (CFIT), air outlet tube (AOT), hydrogen outlet tube (HOT), cooling fluide outlet tube (CFOT), battery group containing four or more than four batteries, terminal plate, integrated packaged central collection plate placed among the fuel cells, and forming clearance being vertical to said plate. The AIT, HIT and CFIT are distributed at one side or two sides of the plate and being connected with the same; AOT is lead-out from the two ends of the plate. A collecting plate is equipped in front of the terminal plate, the HOT and CFOT are led out from the collecting plate or one end (or two ends) of the central plate. Advantages are compact structure, full use of space.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a compact and easy-to-install integrated fuel cell collector plate design. 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

[0017] (1) If the six diversion channels are directly collected on the same panel at the front end of the fuel cell stack, the diversion channels in the fuel cell stack will be relatively long, which will easily generate fluid resistance, resulting in a large pressure loss, which in turn will cause fluid Uneven distribution in each single cell in the battery stack, causing differences in the performance of individual single cells

[0018] (2) Collect the six diversion channels in the fuel cell stack to the two panels at the front and rear ends of the fuel cell stack respectively. For example, each panel at the front and rear ends collects three channels respectively, which also has technical defects. The inlet and outlet of the channel are located at the front and rear ends, forcing the pipeline connections to be scattered at the two ends instead of being centralized. When the fuel cell is used as a vehicle-mounted or ship-borne power system, the dispersion of pipelines is not conducive to the installation of the battery

[0019] (3) All the inlets and outlets of air, hydrogen, and cooling water on several fuel cell stacks are integrated and connected into six fluid channels, and then several uniform thin branch tubes are branched out to connect with the fluid in each fuel cell stack. The method of connecting in and out, its technical defect is because there are too many pipes, it is easy to leak, and the problem of congestion is very prominent, so it is very difficult to design and install

[0021] When four or more sets of fuel cells are installed in an integrated manner, end plates need to be used for fixed packaging, and there will be a large gap in the middle of the stack, resulting in waste

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