Miniature electromagnetic vibration energy harvester and independent power supply module
An electromagnetic vibration and energy harvester technology, which is applied in current collectors, electric vehicles, battery circuit devices, etc., can solve the problems affecting the work of the Internet of Things system, the large number of sensors, and the difficulty of replacing batteries. High energy collection efficiency and the effect of improving collection efficiency
Inactive Publication Date: 2019-03-01
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology
[0002] The Internet of Things technology is one of the current research hotspots. As an important part of the Internet of Things system, wireless sensor technology plays an important role, and energy issues have become an important factor that limits the life of wireless sensor nodes, which will further affect the entire Internet of Things. Working with Networked Systems
The use of traditional battery-powered sensor nodes has the disadvantages of limited battery life, a large number of sensors, and difficulty in replacing batteries
Method used
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[0025] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0026] refer to figure 1 In one embodiment, a miniature electromagnetic vibration energy harvester includes an insulating substrate 1, an induction coil 2, a fixed permanent magnet 3, a copper substrate, a fixed support beam 4 and a vibrating permanent magnet 5, an intermediate layer 6, The induction coil is formed on the insulating substrate, the fixed permanent magnet, the copper base and the intermediate layer are stacked on the insulating substrate from top to bottom, and the fixed support beam is suspended on the insulating substrate. On the insulating substrate, the two ends of the fixed support beam are fixed above the middle layer, and are in the same layer as the copper base. The middle layer plays the role of elevating the fixed beam and giv...
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The invention discloses a micro electromagnetic vibration energy collector and an autonomous power supply module. The energy collector comprises an insulating lining, an induction coil, a middle layer, a copper substrate, a fixed permanent magnetic body, a fixed support beam and a vibration permanent magnetic body, wherein the induction coil is formed in the insulating lining; the fixed permanent magnetic body, the copper substrate and the middle layer are formed on the insulating lining from an upper layer to a lower layer in an overlapped manner; the fixed support beam is suspended on the insulating lining; two ends of the fixed support beam are fixed above the middle layer and are positioned on a same layer with the copper substrate; the vibration permanent magnetic body is formed on a tray in the middle of the fixed support beam; the fixed support beam, the vibration permanent magnetic body and the fixed permanent magnetic body form a vibration pickup structure; due to a magnetic field generated when the vibration pickup structure is operated, induced current can be generated from the induction coil along with variations of the magnetic field. The energy collector is high in collection efficiency, high in output voltage, stable in output, high in system integration degree and simple in manufacturing process.
Description
technical field [0001] The invention relates to a miniature electromagnetic vibration energy collector and a wireless sensor network node autonomous power supply module using the miniature electromagnetic vibration energy collector. Background technique [0002] The Internet of Things technology is one of the current research hotspots. As an important part of the Internet of Things system, wireless sensor technology plays an important role, and energy issues have become an important factor that limits the life of wireless sensor nodes, which will further affect the entire Internet of Things. work with networked systems. Sensor nodes powered by traditional batteries have the disadvantages of limited battery life, a large number of sensors, and difficult battery replacement. Harvesting energy from the environment to power sensor nodes can greatly increase system lifetime. [0003] Vibration energy widely exists in the natural environment, and the collection is relatively con...
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IPC IPC(8): H02K35/02H02J7/32
CPCH02J7/32H02K35/02
Inventor 董瑛张文阳谭羽杉王晓浩
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV