Flow guiding electrode for temperature difference generator and its preparing method

A technology for thermoelectric generators and manufacturing methods, which is applied in the manufacture/processing of thermoelectric devices, materials for lead-out wires of thermoelectric devices, etc., and can solve the problems of low conversion efficiency of thermoelectric generators, fast attenuation of thermoelectric generators, and low welding strength, etc. , to achieve the effect of improving compactness, increasing area and improving welding strength

Inactive Publication Date: 2008-06-11
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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Problems solved by technology

Its disadvantages are: the welding resistance is large, the welding strength is not high, and the thermoelectric material and electrodes are prone to fall off during the vibration and shock process of the thermoelectric generator, and the thermoelectric generator decays quickly when working for a long time under a large temperature gradient. Short life, which is one of the reasons for the low conversion efficiency of thermoelectric generators

Method used

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  • Flow guiding electrode for temperature difference generator and its preparing method
  • Flow guiding electrode for temperature difference generator and its preparing method
  • Flow guiding electrode for temperature difference generator and its preparing method

Examples

Experimental program
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Embodiment 1

[0026] Embodiment 1: with reference to attached Figure 1-3 , in the pressing process, firstly clean the indenter 1, the female mold 2, the inner core 4 and the mold frame 5. The diameter of the inner core 4 is consistent with the diameter of the thermoelectric material used, and its shape is a cylinder, and there are several specially processed circular grooves on one end surface, forming an angle of 90 degrees at the bottom of the circular groove. 5 tight fit. After the inner core 4 is put into the mold frame 5, its top will be higher than the mold frame 5. It depends on the height of the hat brim required by the flow-guiding electrode. The general height of the hat brim is 1mm, and the brim is image 3 The shown shape is a semi-hollow cylinder with thin walls around and a hat brim shape with grooves at the bottom, and is put into the female mold 2 together. After the female mold 2 is put into the horizontal position, firstly mix the uniform transition that is weighed acco...

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Abstract

The invention relates to diversion electrode for thermogenerator, which is prepared by: (1) grinding and screening the base powder material and transient active material, respectively; (2) putting treated transient active material and base powder material into mould for pressing by turns to obtain the diversion electrode; (3) taking out the electrode, sintering, holding temperature, annealing, and cooling, and obtaining the final product. This invention has small welding resistance, high welding strength, long service time, and large discharge current density.

Description

technical field [0001] The invention belongs to the technical field of thermoelectricity, and in particular relates to a conduction electrode for a thermoelectric generator and a preparation method thereof. Background technique [0002] At present, the current-conducting electrodes used in thermoelectric generators are generally made of a single metal material such as Fe, Cu, and Ni, and are cut into sheets. Its disadvantages are: the welding resistance is large, the welding strength is not high, and the thermoelectric material and electrodes are prone to fall off during the vibration and shock process of the thermoelectric generator, and the thermoelectric generator decays quickly when working for a long time under a large temperature gradient. The short life is also one of the reasons for the low conversion efficiency of the thermoelectric generator. Contents of the invention [0003] In order to solve the problems in the prior art, the invention provides a current-cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L35/14H01L35/20H01L35/34
Inventor 郑海山陈洪根魏增任保国张建中
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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