Device for detecting tensile strength of proton exchange membrane for fuel cell

By introducing a balanced extension module and an adjustable clamping system into the proton exchange membrane tensile strength testing device, the tearing problem caused by uneven clamping force was solved, and uniform force distribution and high-precision testing of the exchange membrane under tension were achieved.

CN122259352APending Publication Date: 2026-06-23JIANGSU BOHONG FUNENG HYDROGEN ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU BOHONG FUNENG HYDROGEN ENERGY TECH CO LTD
Filing Date
2026-05-12
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing proton exchange membrane tensile strength testing devices suffer from uneven force at the clamping block position when holding the exchange membrane, causing the exchange membrane to tear before reaching its tensile limit, thus affecting the testing accuracy.

Method used

The balanced expansion module is adopted to dynamically adjust the clamping area of ​​the clamping blocks, so that the clamping force is evenly distributed on the exchange membrane. The clamping range is adjusted by using adjustable threaded rods and movable plates. Combined with rubber pads and a steel wire rope system driven by a motor, the clamping force is ensured to be uniform, and the exchange membrane is prevented from shifting and tearing when under tension.

Benefits of technology

This method achieves uniform force distribution on the exchange membrane under tension, improves the accuracy and stability of tensile strength testing, ensures that the exchange membrane is not torn before reaching its tensile limit, and enhances the accuracy of test results.

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Abstract

This invention discloses a proton exchange membrane (PEM) tensile strength testing device for fuel cells, relating to the field of tensile strength testing technology. Addressing the problem that existing PEM tensile strength testing devices often prematurely tear the exchange membrane during testing, the invention includes a support platform with two symmetrical uprights. The disclosed PEM tensile strength testing device for fuel cells allows for dynamic adjustment based on the size of the exchange membrane during tensile strength testing. This adjustment expands the clamping area of ​​the PEM, ensuring that the force on the clamping portion of the exchange membrane is as balanced as possible with the forces on other parts of the membrane during tensioning. This results in uniform stress on the exchange membrane, enabling the device to successfully tension the membrane to its tensile limit and improving the accuracy of tensile strength testing.
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