Flexible temperature differential power generation micro-unit structure

Abstract

The invention discloses a flexible temperature differential power generation micro-unit structure. The flexible temperature differential power generation micro-unit structure is characterized in that a plurality of insulating hard films which are equidistantly distributed to form a layer are deposited on the upper surface of a polyimide substrate, a P-type film thermoelectric arm and an N-type film thermoelectric arm which are parallel to each other are respectively arranged on two upper sides of each insulating hard film, the length and the width of each P-type film thermoelectric arm are equal to those of each N-type film thermoelectric arm, one end of each P-type film thermoelectric arm is connected with one end of the corresponding N-type film thermoelectric arm by a conducting wire, the other end of each P-type film thermoelectric arm is connected with the other end of the adjacent front N-type film thermoelectric arm by a conducting wire, the other end of each N-type film thermoelectric arm is connected with the other end of the adjacent rear P-type film thermoelectric arm, and the same procedure is sequentially repeatedly carried out, so that the flexible temperature differential power generation micro-unit structure is formed. The flexible temperature differential power generation micro-unit structure has the advantages that the flexible temperature differential power generation micro-unit structure is flexible and can deform in multiple directions, the insulating hard films can prevent bismuth telluride thermoelectric materials with poor ductility from being broken when a temperature differential power generation unit structurally deforms, and failure is prevented; and the flexible temperature differential power generation micro-unit structure is mainly used for supplying power for implanted medical micro-devices, and has popularization and application value.

Description

technical field [0001] The invention relates to a thermoelectric power generation structure, in particular to a flexible thermoelectric microunit structure. Background technique [0002] Implantable medical devices in the body are used more and more widely, such as cardiac pacemakers, defibrillators, artificial sphincters, implanted drug pumps, etc., which can replace or improve the function of organs or treat certain diseases. Providing durable and stable energy supply for implantable 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 usually no more than five years. Replacing the batteries requires surgical operations, which brings physical pain to the patients. The rechargeable secondary lithium battery needs external electromagnetic coupling, infrared radiation and other charging, which brings a lot of inconvenience to patients. [0003] In addi...

AI Technical Summary

Problems solved by technology

However, the mechanical properties of bismuth telluride (BiTe) materials are poor. It is brittle, and the Te-Te layer of bismuth telluride material is prone to slip when it is under pressure, which will lead to fracture and deformation. In this way, bismuth telluride and its alloy materials directly processed on the flexible substrate are easy to break, making the thermoelectric power generation unit invalid.

Images