A spherical multi-directional piezoelectric power generation device

Abstract

The invention discloses a spherical multi-directional piezoelectric power generation device. The spherical multi-directional piezoelectric power generation device comprises a plurality of same mass blocks and a plurality of same piezoelectric beams, wherein adjacent mass blocks are connected by the piezoelectric beams, each piezoelectric beam comprises an outer-side PVDF piezoelectric thin film, aberyllium bronze elastic substrate and an inner-side PVDF piezoelectric thin film, a plurality of grooves are formed in the mass blocks, and the beryllium bronze elastic substrates in the piezoelectric beams are embedded into the grooves to achieve connection with the mass blocks. The device can be sensitive to an environment in an arbitrary direction in an external environment to vibrate, electromechanical energy conversion of the device is further achieved, and the defect that vibration energy cannot be collected by a traditional piezoelectric vibration power generation device under excitation of the external environment in certain directions is overcome.

Description

technical field [0001] The invention relates to the fields of new energy and electronic technology, in particular to a spherical multi-directional piezoelectric power generation device. Background technique [0002] In recent years, with the rapid development of social economy, the demand for energy is increasing day by day. Environmental pollution and energy shortage have become a common problem plaguing all countries in the world, and the resulting environmental degradation and energy crisis have gradually begun to affect social and economic development. and people's daily life. Under this pressure, scientific and technological workers from various countries have begun to explore and develop new energy sources, such as solar energy, wind energy, and wave energy. As a common phenomenon in daily life, vibration has attracted more and more researchers' attention because of its high energy density and its potential energy value. At present, there are mainly three types of de...

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Problems solved by technology

[0003] Looking at the research status of piezoelectric vibration power generation technology, the above-mentioned vibration power generation devices are mainly unidirectional and single resonant frequency, and their use occasions have a strong selectivity to the vibration environment. When there are vibrations in various directions and the vibration frequency is certain Under the changing environment within a certain range, the power generation capacity of the above-mentioned piezoelectric vibration power generation device will be very limited, which limits its popular promotion and use.

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