A piezoelectric vibration energy harvester
A vibration energy harvesting, piezoelectric technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of short power supply time, output voltage and output power It is not high and the structural tightness of the piezoelectric cantilever beam is not high, so as to achieve the effect of reasonable design, low matching impedance, high output voltage and output power
Active Publication Date: 2019-11-12
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] In recent years, scholars at home and abroad have made great progress in the field of vibration energy harvesting, and have designed miniaturized harvesting devices and widely used them in real life. For example, the Chinese patent application number 201610821858.3 discloses a vibration energy harvesting Although it can realize the collection of vibration energy, the structural compactness of the piezoelectric cantilever beam is not high, so the output voltage and output power of the vibration are not high, and it can be used as power supply for wireless sensor network nodes, embedded sensors or microelectronic products shorter time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] refer to figure 1 and Figure 3-Figure 5 , a piezoelectric vibration energy harvester of the present invention comprises a piezoelectric cantilever beam A and a mass block 2, the piezoelectric cantilever beam A comprises a vibrating plate 1, a convoluted structure and a fixed plate 7, and the mass block 2 is arranged on the vibrating plate 1 Above; one end of the convoluted structure is connected to the vibrating plate 1, and the other end is connected to the fixed plate 7; a closed groove 9 is formed between the convoluted structure and the vibrating plate 1.
[0023] Among them, the revolving structure includes a first revolving plate 3, a second revolving plate 4 and a third revolving plate 5, and the first revolving plate 3, the second revolving plate 4 and the third revolving plate 5 are arranged in close contact with each other and extend outward in sequence; One end of the revolving plate 3 is connected to the vibrating plate 1, the other end is connected to one...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a novel piezoelectric vibration energy collector. The novel piezoelectric vibration energy collector comprises a piezoelectric cantilever arm and a mass block, wherein the piezoelectric cantilever arm comprises a vibrating plate, a rotating structure and a fixing plate; the mass block is arranged on the vibrating plate; one end of the rotating structure is connected to thevibrating plate, and the other end of the rotating structure is connected to the fixing plate; an enclosed slot is formed between the rotating structure and the vibrating plate. The novel piezoelectric vibration energy collector can provide higher output voltage and power and lower matching impedance to achieve longer-time power supply of external devices such as wireless sensor network nodes, embedded sensors or micro-electronic products, and meanwhile, can reduce the structural resonant frequency and expand the effective working bandwidth, thereby being more applicable to a body vibration energy collecting system.
Description
technical field [0001] The invention relates to the field of vibration energy collection, in particular to a piezoelectric vibration energy collector. Background technique [0002] In recent years, scholars at home and abroad have made great progress in the field of vibration energy harvesting, and have designed miniaturized harvesting devices and widely used them in real life. For example, the Chinese patent application number 201610821858.3 discloses a vibration energy harvesting Although it can realize the collection of vibration energy, the structural compactness of the piezoelectric cantilever beam is not high, so the output voltage and output power of the vibration are not high, and it can be used as power supply for wireless sensor network nodes, embedded sensors or microelectronic products The time is shorter. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a piezoelectric vibration energy ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/186
Inventor 叶涛俞慧赵自强
Owner FOSHAN SHUNDE SUN YAT SEN UNIV RES INST