Fuel cell stack and vibration damping components

Abstract

The present invention relates to the technical field of fuel cells, in particular to a fuel cell stack, including a casing, an inner stack of the stack, an upper vibration damping assembly and a lower vibration damping assembly, the inner stack of the stack includes a limit assembly, and the limit assembly includes an upper limit position rod and lower limit rod; the upper damping assembly includes an upper elastic damping pad, which is installed on the housing, and the upper elastic damping pad has an upper clamping cavity with an open lower end, and a part of the upper limit rod fits in the In the upper clamping cavity; the lower damping assembly includes a lower elastic damping pad, which is installed on the housing, and the lower elastic damping pad has a lower clamping cavity with an open upper end, and a part of the lower limit rod fits in the lower clamp Hold the cavity. A vibration-damping assembly includes an elastic vibration-damping pad, the elastic vibration-damping pad has a first surface and a second surface opposite to each other, and a clamping cavity is arranged on the second surface. The invention has the advantages of small vibration in the electric stack, high strength of the overall structure, good safety and reliability, no space bending of the battery pack, and the like.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell stack and a vibration damping assembly. Background technique [0002] Fuel cell is a kind of new energy battery, and it is a hot issue in the research of new energy industry. In hydrogen energy fuel cell stack, bipolar plate and membrane electrode are relatively important components, which play the role of gas distribution, water drainage, heat conduction, conduction, etc. important role. We can know that a membrane electrode (MEA) and its two bipolar plates located at the cathode and anode constitute a single cell. The single cells of the fuel cell stack have sealing rings to prevent hydrogen and air leakage or serial leakage. When the fuel cell system is running, external vibrations such as hydrogen pumps, air compressors, vehicles, etc. and slight collisions impact the shell of the stack, and misalignment may occur between the sealing ring and the electrode pl...

AI Technical Summary

Problems solved by technology

[0005] There are some problems in the form of vibration damping of fuel cell stacks in the related art: first, part of the horizontal vibration damping spring is in a suspended state, which is not conducive to installation and is easy to dislocate under the action of gravity; second, the vibration damping rubber installed in the vertical direction Because the fuel cell stack’s self-weight squeezes the vibration-damping rubber pad for a long time, the vibration-damping rubber pad quickly fails; third, the shell and multiple metal parts in the stack are fixedly connected by bolts, which are easy to break and fall off under vehicle vibration

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