Proton exchange membrane cell unit structure for hydrogen fuel cell

Abstract

The invention relates to the technical field of hydrogen fuel cells, and discloses a proton exchange membrane cell unit structure for a hydrogen fuel cell. The proton exchange membrane cell unit structure comprises a cell shell, an insulating bottom plate, an insulating top plate, a binding post, an electrode assembly and a membrane assembly. The connecting assemblies are arranged on the two outer side walls of the cell shell, the insulating bottom plate is fixed at the bottom end of the cell shell, and the insulating top plate is fixed at the top end of the cell shell; a plastic packaging plate is welded at the center position in the insulating top plate, and binding posts are mounted in sealing rings. According to the invention, the fastening mounting of an electrode plate and a proton exchange membrane is realized, and deviation or falling is avoided, so that the reliability and stability of the hydrogen fuel cell during operation are ensured, the later replacement is facilitated, and the use cost is reduced; a plurality of cell shells are connected and butted conveniently, so that the assembly efficiency of the hydrogen fuel cell is improved, and the normal heat dissipation requirement is not influenced.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cells, in particular to a proton exchange membrane cell structure for hydrogen fuel cells. Background technique [0002] A hydrogen fuel cell is a battery that uses the chemical element hydrogen to produce energy. On this basis, relevant technical personnel improve its internal structure to form a proton exchange membrane battery, that is, it uses a battery that can conduct protons but can hardly conduct electrons. The polymer membrane acts as an electrolyte, directly injects hydrogen and oxygen into the battery according to a specific ratio, and uses a catalyst to catalyze the electrochemical reaction at the cathode / anode plate, thereby generating electricity more efficiently. [0003] However, in the existing proton exchange membrane cell structure based on hydrogen fuel cells, the electrode plates and proton exchange membrane components are generally assembled by welding or compression. O...

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Problems solved by technology

[0003] However, in the existing proton exchange membrane cell structure based on hydrogen fuel cells, the electrode plates and proton exchange membrane components are generally assembled by welding or compression. Once subjected to external shocks or collisions, the joints are prone to breakage or loosening. , which in turn causes the electrode plate and the proton exchange membrane to shift each other, thereby affecting the normal progress of the electrochemical reaction; and the hydrogen fuel cell made in this way is disposable, and can only be discarded as a whole when the internal components are aged to a certain extent. The resource consumption is large and the cost of use is high; in addition, when multiple hydrogen fuel cells need to be connected in series, due to the lack of convenient connection structure, it is often necessary to fix the battery casings to each other by welding or bonding, but This method will affect the normal heat dissipation of the battery

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