A collector plate for a hydrogen fuel cell stack

Abstract

The invention relates to a current collector plate for a hydrogen fuel cell stack. The current collector plate comprises a current collector plate body. The current collector plate body is in a metalplate shape. The current collector plate body is composed of a current collector surface and a terminal. The current collector surface is used for contacting with a graphite polar plate of an electricpile to collect a current of the electric pile. The terminal is used for connecting with a test lead, the current collector surface adopts a non-planar structure and is in contact with the graphite polar plate through a convex part of the non-planar structure, the terminal is provided with a screw hole and a quick plug structure, and the quick plug structure is matched with a quick plug connectoron the test lead so as to realize quick plug during testing. Compared with the prior art, large-area suspension caused by defects or sundries can be avoided to a great extent, an effective contact area is increased, requirements of the structure for materials, machining precision and cleanliness of an assembly workshop are greatly reduced, production cost is saved, meanwhile, rapid insertion andextraction during testing are achieved, and testing efficiency is improved.

Description

[technical field] [0001] The invention relates to the technical field of fuel cells, in particular to a collector plate for hydrogen fuel cell stacks. [Background technique] [0002] In the hydrogen fuel cell stack (referred to as the stack), the current collector plate is generally made of metal copper plate, which is processed into the desired shape. The structure of the current collector plate is divided into two parts: the current collector surface and the terminal. The graphite plate contacts to collect the current of the stack, and the terminals are used to connect with external wires to supply power to the load. In order to reduce the contact resistance, the current collecting part of the existing current collector plate in contact with the graphite pole plate generally requires high flatness for both the graphite pole plate and the current collector plate. If the graphite pole plate or the current collector plate is processed There are surface defects, or dust and o...

AI Technical Summary

Problems solved by technology

This method of wiring is reliable, but since the stack production process will go through multiple tests, screws need to be installed and removed many times, the operation is complicated, which is not conducive to the testing process, especially in low-power stacks, the current is not large, and it is necessary to install and remove screws. Sex is not big, it seems a bit cumbersome

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