Stack package plate for preventing condensation in fuel cell stack

Abstract

The invention discloses a stack package plate for preventing the condensation in a fuel cell stack, comprising a water accepting layer, a supporting layer and a heat insulation layer, wherein the water accepting layer, the supporting layer and the heat insulation layer are fixedly connected in order. According to the invention, the structure of the stack package plate is improved by taking insulation measure to reduce the water vapor content in the stack package to the greatest extent and absorbing the water vapor or water that seeps through the outside by the water accepting layer, thus the formation of the condensation in the fuel cell stack is reduced, and the security threats brought by short circuit caused by water ingress in the stack are effectively prevented.

Description

technical field [0001] The invention relates to the field of fuel cell stack packaging, in particular to a stack packaging plate for preventing dew condensation in the fuel cell stack packaging. Background technique [0002] Fuel cells are increasingly widely used in many fields such as automobiles and power stations. In order to broaden its practical application value, the working environment of fuel cells is often relatively harsh, such as low temperature, spray water, dust-proof and so on. Therefore, in order to protect the core part of the fuel cell—the fuel cell stack, it is often required to be packaged in a semi-hermetic or even fully hermetic manner. [0003] Fuel cell stacks are often stacked and connected in series in the form of a filter press. Especially for high-power fuel cells, water cooling is generally used to dissipate heat. Higher temperature water tends to permeate out of the stack in a small amount and volatilize; at the same time, the water vapor gene...

AI Technical Summary

Problems solved by technology

[0006] The use of ventilation can slow down the amount of condensation under certain conditions, but at low ambient temperatures, if the temperature of the gas entering the stack package is very low, it will cause water vapor to liquefy directly and accumulate on the inner plate of the stack package, so it cannot Solve the liquid water threat fundamentally

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