A Simplified Fuel Cell Structure

Abstract

A simplified fuel cell structure comprises integrated end plates and a multi-section monocell; a collector plate and a fake cell are arranged between the multi-section monocell and the two integrated end plates; the integrated end plates are made of a conductive material; one surface, which is not in contact with the multi-section monocell, of each end plate made of the conductive material is subjected to insulation treatment, and a hydrogen flow passage, an air flow passage and a cooling liquid flow passage are processed on one surface, in contact with the multi-section monocell, of each end plate and are isolated through sealant lines; a connector for line outgoing of a positive / negative pole outgoing line of a galvanic pile is processed on a side surface of each end plate. The simplified fuel cell structure has the benefits that the integrated end plates integrate the functions of the end plates, the collector plate and the fake cell, the size and the weight of the galvanic pile are reduced, and the volume ratio power density and the weight ratio power density of the galvanic pile are improved helpfully; the number of galvanic pile components is reduced, the galvanic pile structure is simplified, the reliability is improved, and the assembly and maintenance efficiency of the galvanic pile is improved; the function of edge effect of the 'fake cell' of the galvanic pile can be adjusted only by changing the structure of a fluid field of the end plate, so that structural improvement is facilitated.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a stack structure of a proton exchange membrane fuel cell. Background technique [0002] In the prior art, when the number of single cells of the fuel cell stack is large, in order to ensure the consistency of the performance of each single cell, one to several dummy cells are usually arranged between the collector plate and the end plate to avoid gas Allocation of marginal effects. Its disadvantages are: fake batteries occupy a certain volume and have a certain weight, which affects the effective improvement of the volume specific power and weight specific power of the stack, and also increases the complexity of the system and reduces reliability. Contents of the invention [0003] The purpose of the present invention is to provide an integrated fuel cell end plate, which integrates the end plate, current collecting plate and dummy battery into one. [0004] The technical...

AI Technical Summary

Problems solved by technology

Its shortcomings are: fake batteries occupy a certain volume and have a certain weight, which affects the effective improvement of the volume specific power and weight specific power of the stack, and also increases the complexity of the system and reduces reliability.

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