Fuel cell stack manifold structure

Abstract

The invention discloses a fuel cell stack manifold structure, which comprises a stack end plate, a left box body and a right box body, the left box body and the right box body are arranged on the front wall surface of the stack end plate, the left box body is provided with three left channels, the three left channels comprise an air inlet channel, a cooling liquid inflow channel and a hydrogen discharge channel, and the right box body is provided with three right channels, the three right channels comprise a hydrogen inlet channel, a cooling liquid outflow channel and an air exhaust channel, the pile end plate is provided with a plurality of end plate ports communicated with all the channels, the left channel and the right channels each comprise a straight-through drainage basin section and a transition drainage basin section which are communicated front and back, and the straight-through drainage basin sections are of a straight-flow type channel structure with the same inner diameter. The transition drainage basin section is of a horn type channel structure with the inner diameter gradually increased from front to back. Therefore, the pressure drop between the front port of each channel and the port of the end plate can be reduced, that is, the power consumption of the system caused by the pressure drop of the manifold part is effectively reduced, the power of the system is further improved, and the pressure loss is reduced.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell stack manifold structure. Background technique [0002] Proton exchange membrane fuel cells have attracted much attention in the past two decades due to their advantages of low operating temperature and high power density. Among them, the fuel cell manifold is mainly used as the interface between gas and coolant, located on the end plate of the stack, and used for the import and export of hydrogen, air, and coolant. The existing manifold structure is low in integration, complex in structure, and takes up a lot of space. Large pressure loss. Contents of the invention [0003] The purpose of the present invention is to provide a fuel cell stack manifold structure to solve one or more technical problems in the prior art, and at least provide a beneficial option or create conditions. [0004] The technical solution adopted for solving the above-mentioned technical ...

AI Technical Summary

Problems solved by technology

Among them, the fuel cell manifold is mainly used as the interface between gas and coolant, located on the end plate of the stack, and used for the import and export of hydrogen, air, and coolant. The existing manifold structure is low in integration, complex in structure, and takes up a lot of space. Large pressure loss

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