A highly robust thermal gradient directional harvesting device

Abstract

The invention discloses a thermal gradient collecting device with high robustness, which comprises several ring structures with different thermal conductivity and density and interface medium with different thermal conductivity between every two adjacent rings. The device arranges asymmetric coupling units periodically to form a SSH model coupled straight chain, and then reversely splices the SSH model coupled straight chain to form a thermal gradient directional collector. The thermal gradient input from any direction and any position of the device will eventually localize the thermal gradient to a specific local position of the device, showing high robustness.

Description

technical field [0001] The invention relates to a thermal gradient directional collection device with high robustness, belonging to the field of thermal functional devices. Background technique [0002] Thermal metamaterials have developed rapidly in recent years, and have made great progress in thermal stealth, thermal protection, thermal management, and thermal information. By regulating the transmission and conversion of thermal energy and controlling heat flow, multiple functions can be realized. In many fields , such as thermoelectricity, fuel cells, thermal insulation coatings, solar cells, etc. have shown great application prospects, and have the possibility of major strategic breakthroughs, but there are still technical difficulties in heat collection, which makes it impossible to achieve efficient and convenient heat energy collection and conversion. Way. [0003] At present, the existing thermal energy harvesting devices still use the method of multi-layer composi...

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Problems solved by technology

[0002] Thermal metamaterials have developed rapidly in recent years, and have made great progress in thermal stealth, thermal protection, thermal management, and thermal information. By regulating the transmission and conversion of thermal energy and controlling heat flow, multiple functions can be realized. In many fields , such as thermoelectricity, fuel cells, thermal insulation coatings, solar cells, etc. have shown great application prospects, and have the possibility of major strategic breakthroughs, but there are still technical difficulties in heat collection, which makes it impossible to achieve efficient and convenient heat energy collection and conversion. Way

[0003] At present, the existing thermal energy harvesting devices are still using multi-layer composite materials, which can only cover, concentrate and reverse the heat flux in thick composite materials and planar structures, which is not only inefficient but also difficult for practical application

At present, there is no technology for thermal gradient collection devices, which makes it impossible to achieve high-efficiency heat conduction for thermal energy collection and conversion under large thermal gradients

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