A double-stack power generation module for a vehicle-used proton exchange membrane fuel cell engine

Abstract

The invention provides a double-stack power generation module of a proton exchange membrane fuel cell engine for vehicles, which belongs to the technical field of fuel cell engines, and includes two electric stacks connected in series, air inlet and outlet fluid distribution pipes, and hydrogen inlet and outlet fluid distribution pipes , coolant inlet and outlet fluid distribution pipes; the upstream of the inlet fluid distribution pipes for air, hydrogen, and coolant are connected to the total inlet of the external corresponding fluid, and the downstream is respectively connected to the inlets of the corresponding fluids of the two stacks; the air, hydrogen, cooling The upstream of the liquid outlet fluid distribution pipeline is respectively connected to the outlets of the corresponding fluids of the two stacks, and the downstream is connected to the total outlet of the external corresponding fluids; Coolant is distributed equally between the two stacks. The double-electric-stack power generation module proposed by the invention has high consistency of output performance and can improve the overall service life of the power generation module.

Description

technical field [0001] The invention belongs to the technical field of fuel cell engines, and in particular relates to a double stack power generation module of a proton exchange membrane fuel cell engine for vehicles. Background technique [0002] A fuel cell is an environmentally friendly, high-efficiency, long-life power generation device. Taking the proton exchange membrane fuel cell (PEMFC) as an example, the fuel gas enters from the anode side, the hydrogen atoms lose electrons at the anode and become protons, the protons pass through the proton exchange membrane to the cathode, and the electrons also reach the cathode through the external circuit, protons, electrons Combines with oxygen at the cathode to form water. The fuel cell converts chemical energy into electrical energy in a non-combustion manner, and its direct power generation efficiency can be as high as 45% because it is not limited by the Carnot cycle. With the battery stack as the core power generation ...

AI Technical Summary

Problems solved by technology

[0004] Existing commercial vehicle fuel cell engines mainly use graphite plate stacks, and the power of a single stack of graphite plate stacks cannot meet the power output requirements of high-power engines, often requiring the superposition of power from multiple stacks to meet the overall power demand

In addition, there are technical problems such as connection methods, fluid distribution methods, compact stack module structures, and performance consistency in the integrated circuits of multi-cell stacks.

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