Packaging structure for fuel cell stack

Abstract

The invention relates to a packaging structure for a fuel cell stack. The packaging structure for the fuel cell stack comprises a stack, a left half shell, a right half shell, a front stack end plate and a back stack end plate, wherein oppositely-spliced contact slots are formed at upper splicing positions and lower splicing positions of the left half shell and the right half shell; the left half shell and the right half shell are packaged on the left side and the right side of the stack, and are oppositely spliced together through the oppositely-spliced contact slots on the left half shell and the right half shell; the left half shell and the right half shell are fixedly connected with the front stack end plate and the back stack end plate through bolts respectively; sealing strips are arranged inside the upper and lower oppositely-spliced contact slots of the left half shell and the right half shell; and sealing strips are arranged on borders of the front stack end plate and the back stack end plate. The packaging structure of the fuel cell stack is attractive in appearance, few in components, convenient to assemble, small in volume, light in weight and low in cost; and water-proof and dust-proof integrated stack packaging can be realized.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell, in particular to a package structure of a proton exchange membrane fuel cell stack. Background technique [0002] In today's global energy shortage and high oil prices, it is imperative to find new energy as a substitute for fossil fuels. Fuel cells are considered to be the fourth-generation power generation technology after hydropower, thermal power and atomic power generation. It directly converts the chemical energy of oxidants and reductants into electrical energy through electrocatalytic reactions. It is an efficient, safe, clean and flexible new type of power generation technology. power generation technology. Among them, the proton exchange membrane fuel cell has a wide range of application prospects in ground power stations, electric vehicles and portable power sources due to its remarkable advantages such as high efficiency, high energy density, low reaction temperature, no no...

AI Technical Summary

Problems solved by technology

[0004] The utility model patent with the Chinese patent number 99219220.X mentions two existing fuel cell press-fit methods—the inner bolt press-fit method and the outer bolt press-fit method. These two press-fit methods have obvious defects. For example, due to the need to punch holes in the deflector, carbon paper and membrane, the internal bolt press-fit reduces the effective electrochemical area of ​​the material, which reduces the volume specific power of the battery, and the external bolt press-fit is likely to cause a single cell under pressure. Displacement occurs in the vertical direction of the bolt

Although this packaging device can function as waterproof and dustproof, hydrogen leakage safety protection, etc., the operation of the exhaust fan and blower requires additional power consumption, and the ventilation pipe is equipped with filtering equipment, which is easily damaged by rainwater.

[0008] Although the invention patent with the Chinese patent number 201010153563.6 and the utility model patent with the patent number 201020168188.8 have met all the specific requirements of "integrated design of waterproof and dustproof, shockproof, insulation, heat insulation, and hydrogen leakage protection", the parts are relatively Many, heavy weight, cumbersome assembly steps, packaged cell stack, the volume is too large

[0009] For the above-mentioned fuel cell stack module packaging methods, there is still a lack of optimization in terms of "beauty, ease of assembly, simplification of parts, space saving, cost, weight, and inconvenient handling"

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