Pengfei Liu

Title: Innovations of Pengfei Liu in Energy Harvesting

Introduction

Pengfei Liu is a notable inventor based in Tianjin, China, recognized for his contributions to energy harvesting technologies. He holds two patents that showcase his innovative approach to harnessing energy through advanced mechanisms. His work focuses on improving power generation efficiency and broadening the effective working bandwidth of energy harvesting devices.

Latest Patents

One of Liu's latest patents is the "Piezoelectric Electromagnetic Composite Energy Harvester Based on Parallel Mechanism." This invention features a piezoelectric electromagnetic combined energy harvester that includes a fixed bracket, three groups of motion branches, and a movable bracket. The design allows for multi-direction telescopic motion, generating induced electromotive force through the constant change of magnetic flux in the coil. The vibration of the piezoelectric beam causes polarization in the piezoelectric material, resulting in output voltage. This invention effectively utilizes a limited working space by incorporating twelve piezoelectric beams, twelve permanent magnets, and twenty-four coils, enhancing overall power generation.

Another significant patent is the "Four-Sided-Synchronous-Swing Dual-Mode Broadband Power Generation Device." This device comprises a fixing frame, a piezoelectric beam swing mechanism, and electromagnetic induction power generators. It utilizes four groups of straight and L-shaped piezoelectric beams installed in a compact space, optimizing the working area and meeting the requirements for microelectromechanical systems. The design allows for vibration in two directions, enriching the dynamic behavior of piezoelectric cantilevers and improving power generation efficiency. This device can harvest energy from rotational inputs and is applicable in various fields, including wind and hydroelectric power generation.

Career Highlights

Pengfei Liu is affiliated with Tiangong University, where he continues to advance his research in energy harvesting technologies. His innovative patents reflect his commitment to developing efficient energy solutions that can be applied in real-world scenarios.

Collaborations

Liu collaborates with notable colleagues, including Minghui Yao and Li Li Ma, contributing to the advancement of energy harvesting research and development.

Conclusion

Pengfei Liu's innovative work in energy harvesting technologies demonstrates his significant contributions to the field. His patents not only enhance power generation efficiency but also broaden the applications of energy harvesting devices.