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Thermoelectric element and thermoelectric device

A technology of thermal power generation and components, applied in the direction of electrical components, thermoelectric device node lead wire materials, generators/motors, etc., can solve problems that cannot be said to have power generation performance, and achieve high-efficiency heat transfer and reception, high industrial value, and high power generation The effect of the characteristic

Inactive Publication Date: 2011-05-04
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this thermoelectric power generation device cannot be said to have sufficient power generation performance.

Method used

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  • Thermoelectric element and thermoelectric device
  • Thermoelectric element and thermoelectric device
  • Thermoelectric element and thermoelectric device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] figure 1 An example of the thermoelectric power generation element of the present invention is shown. Such as figure 1 As shown, the thermoelectric power generation element 10 of the present invention includes a laminated body 13 , and a first electrode 11 and a second electrode 12 respectively arranged at both ends of the laminated body 13 . The laminated body 13 has a shape surrounding a shaft 19 that is linear from one end to the other end, and has a shape extending helically around the shaft 19 . The laminated body 13 is wound with a sufficient distance in the direction along the axis 19 to form the space 21 without touching each other. Furthermore, the laminated body 13 has a structure in which the first thermoelectric conversion material layers 14 and the second thermoelectric conversion material layers 15 are alternately laminated from one end to the other end.

[0035] figure 2 An example of the laminated body in the thermoelectric power generation element ...

Embodiment approach 2

[0054] Figure 7 One example of the thermoelectric power generation device of the present invention is shown. The thermoelectric power generation device 70 has two laminated bodies 13 electrically connected. The structure of the laminated body 13 has already been described in Embodiment 1, and thus description thereof will be omitted. One end of each laminated body 13 is electrically connected to each other by a connection electrode 73 . The extraction electrode 71 is formed at the other end of each laminated body 13 .

[0055]A highly conductive material can be used for the extraction electrode 71 and the connection electrode 73, and the material is not particularly limited. Specifically, metals such as Cu, Ag, Mo, W, Al, Ti, Cr, Au, Pt, In, nitrides such as TiN, tin-added indium oxide (ITO), and SnO can be used. 2 and other oxides. In addition, solder, silver solder, or conductive paste can also be used. The connection electrode 73 and the extraction electrode 71 can b...

Embodiment 1

[0064] In the thermoelectric power generation element 10 of Example 1, Cu is used as the constituent material of the first thermoelectric conversion material layer 14, and Bi is used as the constituent material of the second thermoelectric conversion material layer 15, so that figure 1 construction shown. The shape of the laminated body 13 was 100 mm in inner diameter, 150 mm in outer diameter, and 50 mm in width, and the inner peripheral angle ratio of Cu and Bi was 20:1. In addition, the angle θ is changed within the range of 0° to 240°. In addition, the width of the laminated body 13 is the width in the direction along the axis 19 .

[0065] pass Figure 3D The thermoelectric power generation element 10 is manufactured by the manufacturing method shown in -F. First, a thermoelectric conversion material layer 31 having the same shape as the first thermoelectric conversion material layer 14 was produced by cutting a Cu plate of 100 mm×100 mm and a thickness of 50 mm (refer...

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PUM

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Abstract

The invention provides a thermoelectric element and a thermoelectric device. The thermoelectric element can exchange heat efficiently with a heat source that has a curved surface, such as a columnar heat source. The thermoelectric element is provided with a laminate wherein two different types of thermoelectric converting materials are laminated alternately from one end to the other end, and a first electrode and a second electrode that are disposed at the two ends of the laminate. The laminate is shaped to surround an axis that is a straight line, from one end to the other end. When the laminate is viewed from the direction along the axis, the inner periphery of the laminate is a circular or arc shape, and the interfaces of the layers, that are composed of the two different types of thermoelectric converting materials, are disposed to deviate from a straight line passing through the inner peripheral end points of the interfaces, with the axis as the starting point, going from the inner periphery of the laminate toward the outer periphery.

Description

technical field [0001] The present invention relates to a thermoelectric generating element and a thermoelectric device for converting thermal energy into electrical energy. Background technique [0002] Thermal power generation technology is a technology that directly converts thermal energy into electrical energy by utilizing the Seebeck effect, which is an effect in which an electromotive force is generated in proportion to the temperature difference generated at both ends of a substance. This technology has been put into practical use for power supplies for remote areas, power supplies for space technology, and military power supplies. [0003] The performance of thermoelectric conversion materials used in thermoelectric devices is mostly evaluated by the performance index Z or the performance index ZT that is multiplied by the absolute temperature and is dimensionless. S=Seebeck coefficient of the material used, ρ=resistivity, κ=thermal conductivity, ZT=S 2 T / ρκ repre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/32H01L35/16H01L35/26H02N11/00
CPCH10N10/17
Inventor 小森知行菅野勉足立秀明
Owner PANASONIC CORP