Wearable type flexible temperature-difference power generation structure with stretchable wire

Abstract

The invention discloses a wearable type flexible temperature-difference power generation structure with a stretchable wire. The structure comprises a flexible thermal conductive silica gel cushion, a temperature-difference power generation layer, a thermal conductive patch and a metal cooling fin from the wearable surface to outside in sequence; the cold end plane and the hot end plane of the temperature-difference power generation layer are connected with the bottom surface of the thermal conductive patch and the upper surface of the flexible thermal conductive silica gel cushion respectively; and the upper surface of the thermal conductive patch is connected with the bottom surface of the metal cooling fin. When the wearable surface is adhered to non-planar human body skin, the stretchable wire and a polydimethylsiloxane package absorb deformation stress so as to avoid cracking of a bismuth telluride based thermoelectric arm with a poor mechanical performance and to avoid failure of electrode connection; the flexible thermal conductive silica gel cushion is packaged on one side of the hot end of the temperature-difference power generation layer, so that the tight contact with the skin of a user is ensured, and the heat transfer efficiency is improved; the cold end of each rigid temperature-difference power generation module is equipped with the independent thermal conductive patch and metal cooling fin, so that the structural thickness and quality are reduced and the temperature difference between the cold end and the hot end is increased; and in addition, the wearable type flexible temperature-difference power generation structure can be used for supplying power to wearable type medical apparatuses and has the value of popularization and application.

Description

technical field [0001] The invention relates to a thermoelectric power generation structure, in particular to a wearable flexible thermoelectric power generation structure with extensible wires. Background technique [0002] Wearable medical devices are more and more widely used, such as pulse oximeter, EEG monitor, ECG monitor, toxin detector and blood glucose tester, etc., which can detect human health indicators in real time or assist in the treatment of diseases. Providing durable and stable energy supply for wearable medical devices is a research hotspot and difficult problem in the world today. The existing energy supply mainly relies on lithium batteries, and its effective working time is generally several hours to several days, and the equipment needs to be removed frequently for charging, which limits the patient's range of action and brings a lot of inconvenience to the patient; For patients with poor abilities, frequent replacement of batteries will increase th...

AI Technical Summary

Problems solved by technology

However, there are many curved surfaces on the human body surface and the flexibility of human body activities requires smaller size and better flexibility of wearable thermoelectric power generation components; bismuth telluride-based materials have poor mechanical properties, and stress can easily lead to fracture and deformation, so Bismuth telluride-based materials processed directly on flexible substrates are prone to fracture, rendering thermoelectric units useless

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