Preparation method of thermoelectric refrigerator for high orbit space

A technology of thermoelectric refrigeration and thermoelectricity, which is applied to the operation mode of machines, machines using electric/magnetic effects, refrigerators, etc., can solve problems such as the inability to meet the requirements for the use of sensors in high-orbit space, and achieve vibration mechanics The effect of strong performance, high reliability and small size

Inactive Publication Date: 2012-04-25
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST +1
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  • Application Information

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Problems solved by technology

The above-mentioned refrigeration devices cannot meet the requirements for the use of sensors in high-orbit space

Method used

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  • Preparation method of thermoelectric refrigerator for high orbit space
  • Preparation method of thermoelectric refrigerator for high orbit space
  • Preparation method of thermoelectric refrigerator for high orbit space

Examples

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Embodiment Construction

[0020] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0021] see figure 1 — image 3 .

[0022] ⑴Preparation of thermoelectric material sheets: "melting-segregation" of Bi, Te, and Sb raw materials is carried out to segregate the oxides on the surface of the raw materials and their internal impurities, and the purity of the raw materials is increased to 99.99% to make Bi 2 Te 3 rods as N-type thermoelectric material rods and Sb 2 Te 3 The rod is used as a P-type thermoelectric material rod; the thermoelectric material rod is regionally smelted, and the crystal structure of the thermoelectric material is oriented to reduce the anisotropic performance of the crystal and improve the thermoelectric performance of the material; a high-precision wire cutting machine is used to Thermoelectric mate...

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Abstract

The invention relates to a preparation method of a thermoelectric refrigerator for high orbit space; the preparation method comprises the following steps of: preparing a thermoelectric material sheet, a thermoelectric element, a metallization pattern and a flow deflector, integrally welding, grinding, carrying out ultrasonic cleaning, welding outgoing lines, and carrying out temperature and mechanics aging test of 'electrical aging and temperature cycle as well as variable frequency vibration'; the preparation method is characterized in that two layers of nickel are respectively plated on two end surfaces of the thermoelectric material sheet; a layer of nickel is plated on the metallization pattern; and a layer of nickel and a layer of tin are plated on exposed parts of the flow deflector through barrel plating. Through nickel plating of the thermoelectric material sheet and the metallization graph and nickel plating and tin plating of the flow deflector together with material optimization, welding, grinding, ultrasonic cleaning and screening of destructive tests, the thermoelectric refrigerator prepared by the method has the advantages that the space radiation resistant capacity reaches 300 Krad (Si), the failure rate reaches 200fit, the temperature difference is large, the refrigeration power is high, has the characteristics of strong impact resistance and vibration mechanical property, high reliability, small volume and the like and is particularly suitable for being applied to the high orbit space.

Description

technical field [0001] The invention belongs to the technical field of thermoelectric application, and in particular relates to a preparation method of a thermoelectric refrigerator for high-orbit space. Background technique [0002] The N-type thermoelectric element and the P-type thermoelectric element are the core components of the thermoelectric cooler. The N-type and P-type thermoelectric elements are respectively connected to the deflector to form a circuit to form a pair of thermoelectric elements. The deflector, the hot surface ceramic sheet and the deflector are welded together to provide a conductive path for the refrigerator and realize the circuit series connection between the thermoelectric element pairs; the cold ends and hot ends of several thermoelectric element pairs are all connected in parallel On the cold surface ceramic sheet and the hot surface ceramic sheet, the lead wire provides the interface function of electrical input for the entire refrigerator,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/02
Inventor 马洪奎安晓雨钟红军李春江高文文卢欣李晓刘达郑然李玉明程会燕王晓燕余成武刘婧
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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