DUAL-ROTOR MICROFLUIDIC ENERGY CAPTURING AND POWER GENERATING DEVICE BASED ON PIEZOELECTRIC EFFECT

Smart overview of the Invention

A dual-rotor microfluidic energy capturing and power generating device utilizes the piezoelectric effect to convert mechanical energy from low-velocity microfluidic flows into electrical energy. The design features an inner and outer ring of blades that rotate relative to each other, with magnetic piezoelectric components and steel magnets placed in the annular gap between them. This innovative configuration allows for efficient energy capture from marine currents, addressing the energy supply challenges faced by underwater observation equipment.

Technical Background

Current ocean observation systems face significant limitations due to inadequate energy sources, particularly for deep-sea applications. Traditional methods rely heavily on lithium batteries, which are constrained by their capacity and operational costs. Emerging technologies like nuclear batteries and underwater wireless energy transmission remain impractical. Recent advancements in harnessing marine current and wave energy present a promising solution for powering underwater devices through in-situ energy generation.

Device Structure

The device comprises an inner ring of blades, an outer ring of blades, and magnetic piezoelectric components arranged in an annular gap. The two sets of blades rotate in opposite directions, enhancing the relative motion between them. This design maximizes the oscillation frequency of the piezoelectric components, which are connected to a magnetic steel mass block, facilitating efficient conversion of mechanical energy into electrical energy through the piezoelectric effect.

Performance Enhancements

The dual-rotor structure significantly improves energy capturing efficiency at low flow rates. The inner rotor features resistance-type blades optimized for low-velocity conditions, while the outer rotor incorporates lift-type blades for higher flow rates. This combination allows for a broader operational range and enhances the overall performance of the device. The use of PZT-5H piezoelectric materials further contributes to its effectiveness by enabling multi-stability and increased oscillation frequency.

Advantages

This microfluidic energy capturing device stands out due to its high energy density and ability to provide in-situ power supply for underwater equipment. By utilizing piezoelectric technology, it overcomes the limitations of traditional motors, offering improved starting performance and efficiency at low flow rates. The innovative design not only expands the range of flow rates that can be effectively captured but also enhances the overall energy-capturing efficiency, making it a valuable advancement in marine energy technology.