Impact sensing and energy supply integrated supercapacitor based on microsphere inlaid four-arm beam

Abstract

This application provides an integrated impact sensing and power supply supercapacitor based on a microsphere-embedded four-arm beam, comprising: a sensing unit and a predetermined number of energy storage units. The energy storage units are used for energy storage, and the sensing unit and energy storage units are connected in series to form a stacked structure. The sensing unit includes a microsphere array sensing electrode and two energy storage electrodes located on either side of the sensing electrode, connected in series. The sensing electrode includes a central disk with multiple positioning holes arranged along the circumference of the central disk. Titanium microspheres are embedded within the positioning holes to form a microsphere array, and the titanium microspheres are used to make contact with one of the energy storage electrodes for conduction. When the supercapacitor is under high overload impact, the sensing electrode undergoes elastic deformation, causing the titanium microspheres to momentarily contact and separate from one of the energy storage electrodes, resulting in a pulse change in the voltage across the device, causing a drop and rebound, thereby achieving the sensing of external impact signals.

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