A kind of manufacturing method of micro thermoelectric device

Abstract

The invention discloses a manufacturing method of a micro thermoelectric device. The specific steps are: 1) designing a steel mold according to the size and pattern of the electrode substrate of the micro thermoelectric device; 2) placing the glued electrode substrate 1 on the steel obtained in step 2 In the groove of the mold, the glue point of the electrode substrate 1 corresponds to the through hole of the limit plate of the steel mold; 3) Put the cut thermoelectric particles into the through hole of the limit plate of the steel mold; Weld the entire steel mold including the electrode substrate 1 and the thermoelectric particles to obtain the semi-finished product of the micro thermoelectric device; 5) After demoulding the semi-finished product of the micro thermoelectric device, weld the electrode substrate 2 on the other side to obtain the micro thermoelectric device. The invention realizes the precise arrangement of the micro-particles, and at the same time, during the welding process, the position of the particles is fixed, which ensures the welding accuracy of the micro-thermoelectric device substrate and the particles, and finally produces a high-precision micro-thermoelectric device. The whole process is fast and efficient. Conducive to mass production use.

Description

technical field [0001] The invention relates to the field of thermoelectric device manufacturing, in particular to a method for manufacturing a miniature thermoelectric device. Background technique [0002] As a new energy device that can realize the direct mutual conversion between electrical energy and thermal energy, thermoelectric devices have attracted more and more attention. Conventional thermoelectric devices are mainly used in civil fields such as wine coolers, semiconductor refrigerators, and ice cream machines. At present, the development of thermoelectric devices is moving towards miniaturization. They are mainly used for energy supply and micro-area precise temperature control of wearable devices, such as thermoelectric watches, Laser temperature control of 5G optical communication modules, etc. One of the difficulties in the fabrication of micro thermoelectric devices compared with conventional 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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