A multi-directional vibration energy harvesting device

Abstract

The invention provides a novel multi-directional vibration energy collection device. The device comprises a spherical fixing cavity, an energy conversion device, a guide pipe, a traction structure and a ball. One end of the energy conversion device is connected with the inner wall of the spherical fixing cavity, and the other end of the energy conversion device is a free end; the traction structure penetrates through the guide pipe, one end of the traction structure is connected with the free end of the energy conversion device, the other end of the traction structure is connected with the ball, and the ball abuts against the inner wall of the spherical fixing cavity; when outside excitation in any direction acts on the device, the spherical fixing cavity moves relative to the ball, so that the ball drives the traction structure to swing; meanwhile, the guide pipe is kept static relative to the energy conversion device; therefore, the guide pipe converts kinetic energy of the ball in any direction into single-direction impact force acting on the energy conversion device, the traction structure drives the energy conversion device to generate electric energy, and multi-directional energy collection in a three-dimensional plane is achieved.

Description

technical field [0001] The invention belongs to the field of micro-energy collection, and in particular relates to a three-dimensional multi-directional vibration energy collection device that is based on a three-dimensional sphere and uses a traction structure to efficiently convert mechanical energy of a multi-directional vibration source in the environment into electrical energy. Background technique [0002] At present, low-power electronic devices such as wireless sensors rely on traditional batteries to provide energy, but traditional batteries have disadvantages such as limited life, difficulty in replacement in harsh environments, and large size that limit the further miniaturization of micro-sensors. In order to solve these problems, the researchers proposed an energy harvester that can absorb vibration energy from the surrounding environment, effectively solving the difficulties of limited battery life and inconvenient replacement. [0003] The main types of vibrat...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the vibration energy harvester cannot realize multi-directional energy collection in any plane, which leads to low collection efficiency of the energy harvester, and invents an energy harvesting device that can efficiently obtain multi-directional vibration energy to make up for the aforementioned background technology The defect that can only achieve multi-directional energy harvesting in a single or limited plane

Images