Cable-driven rotary electromagnetic energy harvester

Abstract

The invention belongs to the technical field of new energy and power generation, and particularly relates to a cable-driven rotary electromagnetic energy harvester which can be used for collecting mechanical energy such as vibration and swing in the environment and converting the mechanical energy into electric energy. The device mainly comprises a central rotating shaft, a rotor, an elastic cableand a non-elastic cable, wherein the central rotating shaft is fixedly connected with the rotor, the elastic cable and the non-elastic cable are wound on the central rotating shaft in opposite winding directions, and a magnet can be embedded into the rotor and interacts with a coil to generate an inductive current. The cable-driven rotary electromagnetic energy harvester can be used for supplyingpower to low-power electronic equipment (such as a micro sensor, small mobile equipment, an environment monitoring network and the like), and can be placed in complex environments with vibration sources, such as vibration machines, sea wave floaters and elastic floors. In addition, the cable-driven rotary electromagnetic energy harvester is simple in structure, easy to process, high in output power and wide in working frequency band.

Description

technical field [0001] The invention belongs to the technical field of micro-energy and environmental energy collection, and in particular relates to a rotary electromagnetic energy harvester driven by a cable, which can convert various mechanical movements or excitations in the environment into electric energy, and meets the requirements of wireless sensors, micro-actuators, Power requirements for low power consumption devices such as portable electronic equipment. Background technique [0002] With the rapid development of micro-electromechanical systems and large-scale integrated circuits, many low-power electronic devices have been developed and put into use. Because these electronic devices can consume as little as a microwatt, they can operate independently of the grid with the support of batteries. Although conventional electrochemical batteries can maintain the normal operation of these devices, batteries have disadvantages such as limited energy storage, potential ...

AI Technical Summary

Problems solved by technology

Although these energy harvesters have the advantages of simple structure and low cost, they still have disadvantages such as poor adaptability, low output power, and high resonance frequency, and cannot effectively harvest energy from low-frequency and ultra-low-frequency excitations that widely exist in the natural environment.

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