Voltage Fluctuation in a Supercapacitor During a High-g Impact

Area of Science:

• Materials Science
• Mechanical Engineering
• Electrical Engineering

Background:

• Supercapacitors (SCs) offer high power density and long lifecycles, crucial for applications like electric vehicles.
• Operational stability, especially under extreme conditions like high-g acceleration, is a critical performance metric for SCs.

Purpose of the Study:

• To thoroughly investigate the failure mechanisms of supercapacitors subjected to high-g impacts.
• To establish a physics-based model and conduct simulations to understand SC failure dynamics during extreme acceleration.

Main Methods:

• Analysis of intrinsic reaction mechanisms during high-g impact.
• Development of a multi-faceted physics model for SC failure.
• Multi-field coupled kinetics simulation of SC failure.
• Experimental validation of the proposed model.

Main Results:

• The study elucidates the failure mechanisms of SCs under high-g impact.
• A validated physics model and simulation accurately predict SC failure.
• Key failure factors, including discharge currents and levels, were identified and analyzed.

Conclusions:

• The research provides a comprehensive understanding of supercapacitor failure during high-g impacts.
• The validated model serves as a tool for predicting and mitigating failure.
• Design strategies are proposed to enhance supercapacitor resilience against extreme acceleration events.