A non-uniform absorption rate solid-state thermomechanical light-to-electricity conversion or heat-to-electricity conversion device and method

Abstract

The invention discloses a non-uniform-absorptivity solid-state heat engine optical-electricity conversion or thermal-electricity conversion apparatus and method. The apparatus comprises a lens, a rotary light-shielding plate, a solid-state heat engine, a bridge type rectifying circuit and a chargeable capacitor; the solid-state heat engine is a working medium which is compounded by a conductive film, a heat electricity-releasing film and a conductive vibration film glued in sequence; the partial surface of the conductive film is covered with a layer of coloring coating; light wave passes through the lens to generate focused light beam, and then through modulation of the rotary light shielding plate, optical pulse is formed; the optical pulse irradiates the surface of the conductive layer to periodically heat the solid-state heat engine; a high-energy-density space and a low-energy-density space are formed on the conductive layer of the solid-state heat engine under light wave irradiation; a sudden-change heat gradient is formed in the contact position between the high-energy-density space and the low-energy-density space to generate stress sudden change, so that the conversion effect from light energy or heat energy to the mechanical energy is reinforced, a heat electricity-releasing effect generated by the solid-state heat engine is promoted; the output alternating current passes through the bridge type rectifying circuit to supply power for the chargeable capacitor; and the conversion apparatus is high in thermal-electricity conversion effect and low in economic cost.

Description

technical field [0001] The invention relates to a device and method for converting light energy or thermal radiation energy into electric energy, in particular to a device and method for solid-state thermal-mechanical photoelectric conversion or thermal-electric conversion with non-uniform absorption rate. Background technique [0002] The power generation technology based on the pyroelectric effect is an effective way to convert sunlight / heat or thermal radiation into electrical energy. A solid-state heat engine using the pyroelectric effect can directly convert thermal energy into electrical energy. [0003] With the discovery of new pyroelectric materials and the development of pyroelectric effect research, thermoelectric direct conversion technology based on pyroelectric effect has become one of the main research directions of new energy development and utilization technology. Environmental problems are becoming more and more serious. This kind of direct conversion techn...

AI Technical Summary

Problems solved by technology

[0004] However, the conversion efficiency, equipment complexity, and cost economy of photoelectric conversion or thermal-electric conversion in the existing technology need to be further improved

Images