A vibration energy harvesting device

Abstract

A vibration energy collection device, the permanent magnet is lined with a rubber pad, the N pole and the S pole of the permanent magnet are respectively placed on the left and right yokes, and a part of the two sides of the permanent magnet is attached to the front and rear yokes. The yoke includes the lower part, the middle part and the lower part. The lower part is attached to the permanent magnet, the middle part is wound with a coil, and the upper part is provided with teeth. The width of the bottom of the tooth is the same as that of the top of the tooth. The teeth on the front and rear yokes are distributed alternately; the upper end of the upper part is installed on the cover, the lower end of the upper part is installed on the support, the middle part of the cover is connected to the square shaft, and the square shaft passes through the left and right yokes and the front , The cavity surrounded by the rear yoke, the ferromagnetic vibrator is slidably installed on the square shaft, the spring is set on the square shaft, the upper end of the spring is against the bottom surface of the cover, the lower end of the spring is against the ferromagnetic vibrator, and the lower end of the square shaft Installed on the stand. The invention has low flux leakage, high energy conversion rate and good movement flexibility.

Description

technical field [0001] The invention belongs to the field of energy collection, and in particular relates to an electromagnetic vibration energy collection device for realizing self-power supply of a wireless sensor node or an Internet of Things node. Background technique [0002] The problem of powering wireless sensor networks or distributed small systems is a difficult point. Vibration is a form of energy in nature. For example, the waves of the sea, the swing of branches in the wind, bumpy vehicles, etc. Vibration power generation is to convert the energy generated by various vibrations into electrical energy. It is a potential new power generation device that is pollution-free and does not consume natural resources. It is suitable for wireless sensor networks or distributed small system nodes. [0003] One way to achieve vibration power generation is through the phenomenon of electromagnetic induction. Conventional electromagnetic induction vibration power generation...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of high magnetic flux leakage, low energy conversion rate, and poor movement flexibility of the existing vibration energy collection methods, the present invention provides a low magnetic flux leakage, high energy conversion rate, fixed permanent magnet, and flexible movement. Good vibration energy harvesting device

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