A 30nA Quiescent 80nW-to-14mW Power-Range Shock-Optimized SECE-Based Piezoelectric Harvesting Interface with 420% Harvested-Energy Improvement

📋 论文概要

该论文提出了一种针对冲击优化的基于SECE的压电能量收集接口，能够在30nA静态电流下实现80nW至14mW的功率范围，能量提取效率提升420%。解决了非周期性振动和机械冲击下能量收集效率低的问题。

💡 主要创新点

• 提出了一种冲击优化的SECE策略，通过自适应控制实现宽功率范围的高效能量提取。
• 实现了极低静态电流（30nA），适用于微瓦级能量收集应用。
• 通过420%的能量提取提升，显著优于传统SSHI和SECE方法。

🏷 关键词

📄 原文摘要

mechanical energy (vibration, shocks) into electrical energy, in order to supply energyautonomous sensor nodes in industrial, biomedical or domotic applications. Non-linear extraction strategies such as Synchronous Electrical Charge Extraction (SECE) [1,2], energy investing [3], and Synchronized Switch Harvesting on Inductor (SSHI) [4] have been developed to maximize the extracted energy from harmonic excitations. However, in most of today’s applications, vibrations are not periodic and mechanical shocks occur at unpredictable rates [4]. SSHI interfaces naturally seem as the most appropriate candidates for harvesting shocks as they exhibit outstanding performance in periodic excitations [4]. However, the SSHI strategy presents inherent weaknesses while harvesting shocks, since the invested

👥 作者与机构

Anthony Quelen1, Adrien Morel1, Pierre Gasnier1, Romain Grézaud1,

Stéphane Monfray2, Gaël Pillonnet1 CEA-LETI-MINATEC, Grenoble, France STMicroelectronics, Crolles, France 1 2 Piezoelectric Energy Harvesters (PEHs) are usually used to convert