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Manufacturing method of miniature thermoelectric device

A technology for thermoelectric devices and manufacturing methods, which is applied in the manufacture/processing of thermoelectric devices, semiconductor/solid-state device manufacturing, electric solid-state devices, etc. Problems such as inaccurate arrangement of thermoelectric particles can achieve the effect of improving performance consistency, ensuring contact accuracy, and reducing process links

Active Publication Date: 2021-02-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Manufacturing method of miniature thermoelectric device
  • Manufacturing method of miniature thermoelectric device
  • Manufacturing method of miniature thermoelectric device

Examples

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Embodiment 1

[0032] A method for designing a swing mold tool for the manufacture of micro-thermoelectric devices, comprising the following steps:

[0033] 1) The size of the miniature thermoelectric device to be manufactured in this embodiment is 8×8mm 2 , a total of 97 pairs of micro-thermoelectric particles; design steel mold drawings according to the requirements of the electrode substrate of micro-thermoelectric devices, such as figure 1 and figure 2 shown;

[0034] 2) Utilize the continuous laser to process the steel mold according to the drawings described in step 1); the steel mold includes a limiting plate and an outer frame located around the limiting plate, and the top surface of the limiting plate and the inner side of the outer frame form a concave The groove is used to accommodate the electrode substrate, and a plurality of square through holes are opened on the limiting plate to limit the position of the thermoelectric particles; the size of the groove matches the size of ...

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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. ...

Claims

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Application Information

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IPC IPC(8): H01L35/34H01L21/60H01L21/687
CPCH01L24/81H01L21/68785H01L2224/81815H10N10/01
Inventor 唐新峰唐昊鄢永高苏贤礼
Owner WUHAN UNIV OF TECH
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