Energy Harvesting ( Battery-free solution )

In recent years, enterprises have increasingly focused on environmental sustainability, which involves efforts to reduce carbon emissions, recycle eco-friendly materials, and prioritize environmental protection. This energy harvesting module aims to facilitate the development of more sustainable products by reducing reliance on disposable batteries. It introduces an eco-friendly approach to power management, harnessing solar and natural light to collect energy, thereby converting product power supply and achieving a battery-free, environmentally conscious goal. Currently, many IoT devices / nodes utilize low-power wireless transmission technologies such as Extended BLE and Zigbee to emphasize energy efficiency, lightweight design, and compact size. These products find applications in various areas including remote controllers, electronic paper, and wearable devices, contributing to a shift towards greener and more sustainable lifestyles among consumers. The architecture of this module includes PV Cells, DC/DC converters, Power Management Integrated Circuits (PMICs), and storage elements. 1.PMIC: Manages power and collects energy from the source to charge the storage element. 2.DC/DC: Provides voltage (typically 2.2V to 2.8V) from the storage element to the product. 3.Storage Element: Utilizes a Li-ION Capacitor (Hybrid Supercapacitor), boasting 50F capacity, 3.8V voltage, high power capacity, compact size, and non-hazardous materials (reducing transportation difficulties). 4.PV Cell: Gathers solar/natural light, selecting PV Cells with higher energy density and smaller size for optimal performance. The energy harvesting module is a compact and highly efficient solution designed for energy conservation. It efficiently stores energy collected by the collector's DC management circuit in the Li-ion supercapacitor, enabling it to power various applications. This high-efficiency power conversion capability allows even small-area PV cells to supply power effectively, even in low-light conditions. This ensures autonomous operation and significantly reduces reliance on primary batteries, consequently mitigating environmental harm caused by disposable batteries. It represents a shift towards resource efficiency, energy conservation, and carbon reduction.
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