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Thermoelectric conversion module and method for manufacturing thermoelectric conversion module

一种热电转换、制造方法的技术，应用在热电器件的制造/处理、发电机/电动机、热电器件零部件等方向，能够解决热电转换元件特性劣化、热电转换元件劣化等问题，达到接合可靠性优异、降低电阻、抑制劣化的效果

Active Publication Date: 2020-02-07
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When thermoelectric conversion elements are joined under such relatively high temperature conditions, the characteristics of the thermoelectric conversion elements may still deteriorate due to the heat at the time of joining.
[0018] Also, in the method described in Patent Document 2, bonding is performed at 500 to 800°C using silver paste, but in this case, there is a possibility that the thermoelectric conversion element may be degraded by the heat at the time of bonding.

Method used

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  • Thermoelectric conversion module and method for manufacturing thermoelectric conversion module
  • Thermoelectric conversion module and method for manufacturing thermoelectric conversion module
  • Thermoelectric conversion module and method for manufacturing thermoelectric conversion module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] A thermoelectric conversion module was fabricated by the same method as in the above-mentioned embodiment.

[0137] In Examples 1 to 3 of the present invention and Comparative Examples 1 to 5, a 3 mm x 3 mm x 5 mmt half-Heusler element with Ni-based gold electrodes was used as a thermoelectric conversion element, and 12 PN pairs were used. As the insulating layer, aluminum oxide with a thickness of 0.635 mm was used. As the glass-containing Ag paste for forming the first electrode portion, DD-1240D manufactured by Kyoto Elex Co., Ltd. was used. The heating conditions for forming the first electrode portion were set as follows, namely, temperature: 850° C., holding time: 10 minutes. The thickness of the first electrode portion, the heating temperature when the thermoelectric conversion element was bonded to the first electrode portion, and the pressure load were set as described in Table 1.

[0138] In addition, the bonding atmosphere was set as described in Table 1, a...

Embodiment 2

[0155] Next, a thermoelectric conversion module was produced by the same method as in the above-mentioned embodiment. As a thermoelectric conversion element, a 3 mm x 3 mm x 5 mmt half-Heusler element with Ni-based gold electrodes was used, and 12 PN pairs were used. As the insulating layer, aluminum oxide with a thickness of 0.635 mm was used.

[0156] Here, in the Ag paste coating step, as shown in Table 2, a glass-containing Ag paste (DD-1240D-01 manufactured by Kyoto Elex Co., Ltd.) and an Ag paste not containing a glass component were applied. . In addition, after applying the glass-containing paste, firing is carried out at a temperature of 850°C and a holding time of 10 minutes, and then an Ag paste not containing a glass component is applied and held at a temperature of 850°C Time: Firing was carried out under the condition of 10 minutes.

[0157] (The thickness ratio of the glass-free region in the first electrode part, the presence or absence of glass components o...

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Abstract

The thermoelectric conversion module (10) is formed by electrically connecting a plurality of thermoelectric conversion elements (11) through first electrode parts (25) disposed on one end sides of the thermoelectric conversion elements (11) and a second electrode part (35) disposed on the other end sides. A first insulating circuit board (20) is disposed on the one end sides of the thermoelectricconversion elements (11), the first insulating circuit board (20) being provided with: a first insulating layer (21), of which at least one surface is formed of alumina; and the first electrode parts(25), which are formed on one surface of the first insulating layer (21) and composed of a fired body of Ag. In addition, a glass component is present in the interface between the first electrode parts (25) and the first insulating layer (21), and the first electrode parts (25) each have a thickness of at least 30 [mu]m and a porosity of less than 10% in at least the region in which the thermoelectric conversion element (11) is disposed.

Description

technical field [0001] The invention relates to a thermoelectric conversion module and a manufacturing method of the thermoelectric conversion module. The thermoelectric conversion module is formed by electrically connecting a plurality of thermoelectric conversion elements. [0002] This application claims priority based on the patent application No. 2017-127539 filed in Japan on June 29, 2017 and the patent application No. 2018-121097 filed in Japan on June 26, 2018, and the contents thereof are incorporated herein. Background technique [0003] A thermoelectric conversion element is an electronic element that can convert heat energy and electric energy to each other through the Seebeck Effect or the Peltier Effect. [0004] The Seebeck effect is a phenomenon in which an electromotive force is generated when a temperature difference occurs between both ends of a thermoelectric conversion element, and thermal energy is converted into electrical energy. The electromotive fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/32H01L35/08H01L35/34H02N11/00
CPCH02N11/00H10N10/817H10N10/01H10N10/17H10N10/851H10N10/854
Inventor 新井皓也驹崎雅人黑光祥郎
Owner MITSUBISHI MATERIALS CORP