Thermoelectric converting module and manufacturing method thereof

A technology of thermoelectric conversion and manufacturing method, which is applied in the manufacture/processing of thermoelectric devices, parts of thermoelectric devices, materials of lead-out wires of thermoelectric device nodes, etc., which can solve the problems of melting and outflow, reduced reliability of bonding between thermoelectric conversion elements and electrodes, There is a limit to the heat resistance temperature, etc.

Inactive Publication Date: 2013-03-27
HITACHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Conventionally, bismuth-tellurium-based thermoelectric conversion elements and electrodes are usually joined by soft solder materials such as solder. Under the environment, the soft solder material will melt and flow out, which may reduce the bonding reliability between the thermoelectric conversion element and the electrode. When the soft solder material is used, the heat resistance temperature of the thermoelectric conversion module has a limit

Method used

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  • Thermoelectric converting module and manufacturing method thereof
  • Thermoelectric converting module and manufacturing method thereof
  • Thermoelectric converting module and manufacturing method thereof

Examples

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Embodiment 1

[0096] A silicon-germanium thermoelectric element, a magnesium silicide thermoelectric element, and a manganese silicide thermoelectric element were prepared as the thermoelectric element 20, and a rectangular parallelepiped having a length of 3.7 mm, a width of 3.7 mm, and a height of 4.0 mm was prepared. Further, as electrodes, molybdenum electrodes were prepared for silicon-germanium thermoelectric elements, and nickel electrodes were prepared for magnesium silicide and manganese silicide thermoelectric elements. Then, prepare the aluminum foil of the thickness shown in Table 1 as the metal foil, such as Figure 3A As shown, an aluminum foil is provided between a silicon-germanium thermoelectric element and a molybdenum electrode, or a magnesium silicide thermoelectric element and a nickel electrode, or a manganese silicide thermoelectric element and a nickel electrode. After that, as Figure 3B As shown, the thermoelectric element 20 was heated in the atmosphere shown in ...

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Abstract

Provided is a high temperature thermoelectric converting module including a plurality of p type thermoelectric elements; a plurality of n type thermoelectric elements; a plurality of electrodes; and a lead line. The plurality of p type thermoelectric elements, the plurality of n type thermoelectric elements, and the plurality of electrodes are electrically serially connected to each other, a pair of connecting lines that connects the lead line to one of the plurality of electrodes to output to the outside is further included, at least one electrode which is disposed at the high temperature side and the plurality of p type and n type thermoelectric elements are bonded with an intermediate layer therebetween. The plurality of p type and n type thermoelectric elements contain silicon as a component and the intermediate layer is formed as a layer containing aluminum and silicon and components other than silicon of the thermoelectric elements.

Description

technical field [0001] The present invention relates to a thermoelectric conversion module with improved bonding reliability between a thermoelectric conversion element and an electrode, and a method for manufacturing the same. Background technique [0002] A thermoelectric conversion module that converts thermal energy into electrical energy has advantages such as no drive unit, no vibration, and simple structure, and therefore requires no maintenance. However, thermoelectric conversion modules have been used in places with limited use, such as the universe, due to their low energy conversion efficiency. However, in recent years, due to environmental concerns, it has been attracting attention as a method of recovering thermal energy that has been wasted and discarded as waste heat in the past. It is expected to be used in automobiles, industrial furnaces, garbage incinerators, etc., and thermoelectric conversion modules are also desired. The cost is reduced and the durabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/32H01L35/10H01L35/34
CPCH01L35/14H01L35/34H01L35/32H10N10/817H10N10/855
Inventor 东平知丈藤原伸一地主孝广石岛善三
Owner HITACHI CHEM CO LTD
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