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Planar multidirectional low-frequency electromagnetic vibration energy harvesting device

An electromagnetic vibration and energy harvesting technology, applied in the direction of electromechanical devices, electrical components, etc., can solve problems such as single application occasions, difficult voltage peripheral circuits, and high external excitation frequency requirements, and achieve the effect of increasing the working bandwidth

Active Publication Date: 2019-10-15
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: It is difficult to directly drive the peripheral circuit due to the small voltage, and the requirements for the external excitation frequency in the working state are relatively high, and the application occasion is relatively single

Method used

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  • Planar multidirectional low-frequency electromagnetic vibration energy harvesting device
  • Planar multidirectional low-frequency electromagnetic vibration energy harvesting device
  • Planar multidirectional low-frequency electromagnetic vibration energy harvesting device

Examples

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Embodiment Construction

[0028] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 and figure 2 As shown, a planar and multi-directional low-frequency electromagnetic vibration energy harvesting device includes an upper cover 1, a curved surface structure in the middle and a coil base at the bottom;

[0030] Such as image 3 and Figure 4 As shown, the coil base is a hollow cylindrical structure with an open top, and the bottom of the coil base is provided with 7 cylindrical bosses for inserting the multi-turn coil 10; the 7 cylindrical bosses include The first coil boss 12 in the center of the bottom of the seat and 6 second coil bosses (11, 13 among the figures) evenly distributed around the first coil boss; Corresponding positions are provided with openings 10, and internal threads 9 are provided on the inner wall of the side wall of the coil base;

[0031] Such as Figure 5 and Figure 6 A...

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Abstract

The invention discloses a planar multidirectional low-frequency electromagnetic vibration energy harvesting device, comprising an upper cover, a middle curved structure and a bottom coil base, whereinthe coil base is a hollow cylindrical structure with an open top and is provided with seven cylindrical bosses on its bottom for holding a multi-turn coil; the inner wall of the side wall of the coilbase is provided with internal threads; the upper cover is a hollow cylindrical structure with an open bottom; the inner wall of the side wall of the upper cover is provided with internal threads; adownwardly protruding upper cover envelope curved surface is disposed in the middle of the upper cover; the middle curved structure is a cylindrical structure with an open top, and has a w-shaped internal curved surface; a magnetic ball is disposed on the internal curved surface of the middle curved structure and moves along the internal curved surface; and the outer wall of the middle curved structure is provided with upper and lower external threads. The planar multidirectional low-frequency electromagnetic vibration energy harvesting device can select different potential energy curves according to the needs of a working environment so as to have different working frequencies and have an increase in the working bandwidth, thereby adapting to various occasions.

Description

technical field [0001] The invention relates to an energy collection device, in particular to a planar multi-directional low-frequency electromagnetic vibration energy collection device. Background technique [0002] The electromagnetic energy harvesting device is designed based on electromagnetic induction. The two core components of the device are the induction coil and the permanent magnet. When the device is excited by the outside, the magnet and the coil will move relative to each other, which will make the magnetic flux in the coil As time changes, an induced voltage is generated, which converts the vibration energy harvested in the environment into electrical energy. [0003] Electromagnetic vibration energy harvesting devices have both advantages and disadvantages. Advantages: Generally speaking, no external starting power is needed, the natural frequency is low, no smart materials are needed, and strong electromechanical coupling can be achieved. Disadvantages: It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K35/02
CPCH02K35/02H02K2213/03
Inventor 刘伟群顾雨涵
Owner SOUTHWEST JIAOTONG UNIV
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