Manufacturing method of miniature thermoelectric device

Abstract

The invention discloses a manufacturing method of a miniature thermoelectric device. The manufacturing method comprises the following specific steps: 1) designing a steel mold according to the size and pattern of an electrode substrate of the miniature thermoelectric device; (2) placing a dispensed electrode substrate 1 in a groove of the steel mold obtained in the step (2), and enabling a glue point of the electrode substrate 1 to correspond to a through hole of a limiting plate of the steel mold; 3) putting cut thermoelectric particles into the through hole of the limiting plate of the steelmold; 4) welding the whole steel mold together with the electrode substrate 1 and the thermoelectric particles to obtain a semi-finished product of the micro thermoelectric device; and 5) after demolding the semi-finished product of the micro thermoelectric device, welding the electrode substrate 2 on the other side to obtain the micro thermoelectric device. According to the method, precise arrangement of the micro particles is achieved, meanwhile, in the welding process, the positions of the particles are fixed, the welding precision of the micro thermoelectric device substrate and the particles is guaranteed, finally, the high-precision micro thermoelectric device is manufactured, the whole process is rapid and efficient, and large-scale production and use are facilitated.

Description

technical field [0001] The invention relates to the field of manufacturing thermoelectric devices, in particular to a method for manufacturing micro thermoelectric devices. Background technique [0002] As a new energy device that can realize direct mutual conversion between electric energy and thermal energy, thermoelectric devices have attracted more and more attention. Conventional thermoelectric devices are mainly used in civil fields such as wine cabinets, semiconductor refrigerators, and ice cream machines. At present, the development of thermoelectric devices is moving towards miniaturization, and they are mainly used for energy supply of wearable devices and precise temperature control of micro-zones, such as thermoelectric watches, 5G optical communication module laser temperature control, etc. Compared with conventional thermoelectric devices, one of the difficulties in the manufacture of micro thermoelectric devices lies in high-precision assembly and welding. ...

AI Technical Summary

Problems solved by technology

The entire manufacturing process is done by hand. Due to the certain elasticity of the rubber pendulum tool, the arrangement of the sticky thermoelectric particles is not accurate, and because the polyimide film is used to stick out, the metallized layer on the surface of the particles is polluted by the glue , and the polyimide film is also elastic, which affects the alignment accuracy of the particles and the solder paste on the substrate, which is not conducive to the subsequent soldering process

Therefore, this method cannot produce micro thermoelectric devices that require extremely high precision.

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