Combined type energy collecting device

Abstract

The invention discloses a combined type energy collecting device. The combined type energy collecting device comprises a supporting plate, wherein the two ends of the supporting plate are respectivelyprovided with a cantilever supporting base and an electromagnetic supporting base, and a cantilever module and an electromagnetic module which are respectively connected with the cantilever supporting base and the electromagnetic supporting base. The cantilever module comprises a cantilever beam, one end of the cantilever beam is fixedly connected with the cantilever supporting base, the other end of the cantilever beam is a free end and points to the electromagnetic supporting base, and magnets are connected to the two side faces of the free end respectively. The electromagnetic module comprises a floating assembly and an electromagnetic assembly, the floating assembly supports the electromagnetic assembly to suspend in the electromagnetic supporting base, and the electromagnetic assembly comprises a conductive coil. According to the invention, overall wide-frequency-range energy collection can be realized, and the energy conversion efficiency and the overall power generation capacity are improved.

Description

technical field [0001] The invention relates to the technical field of energy collection, in particular to a composite energy collection device. Background technique [0002] In recent years, with the maturity of low-power wireless transmission technology, various micro sensors, embedded systems and wireless sensor networks have developed rapidly, and the power consumption of micro electronic devices has also been reduced to the microwatt level. However, the traditional battery power supply method has disadvantages such as large footprint, short service life, limited storage energy, and environmental pollution. Therefore, how to provide long-term stable power supply for microelectronic devices is currently a technical problem that needs to be overcome. Therefore, energy harvesting technology has been developed, which collects energy from the environment and converts it into electrical energy to realize self-power supply of wireless sensor nodes. [0003] Vibration energy is...

AI Technical Summary

Problems solved by technology

[0004] However, most of the vibration sources in the environment are not vibrations of a single frequency, but vibrations with a wide range of frequency changes and random vibrations

Most vibration energy harvesters still work in a linear manner. Only when the frequency of the external vibration source is close to the resonant frequency of the collector can a large output be generated, resulting in a relatively narrow effective operating frequency range of the collector, which cannot adapt to broadband random environmental vibration sources. , and the energy conversion form is relatively simple, and the power generation is limited

Although the study found that there are many mechanisms that can broaden the operating frequency band of the vibration energy harvester and enhance the output performance, but there are deficiencies, such as the complex discrete structure of the resonant frequency of the multi-mode vibration energy harvester, and the multi-stable vibration energy harvester. It is suitable for high-intensity excitation environment, and the service life of up-frequency vibration energy harvesting is short, which is difficult to meet the power supply requirements of electronic devices

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