JPH05145122A - Thermo-electric conversion module joint jigs - Google Patents

Abstract

PURPOSE:To minimize the thermal capacity of a heated member and reduce time required for a heating and cooling cycle when joining a thermoelectric conversion module. CONSTITUTION:This is a jig which heats and joins thermoelectric devices 2 and boards 3 of a thermoelectric conversion module 1 which comprises a combination of a plurality of thermoelectric devices 2 and two boards 3 which clamp the thermoelectric devices. It is provided with a heating jig 5 which is placed in contact with the boards 3 and a high frequency coil 6 which covers the heating jig 5. The thermoelectric devices 2 and the joint section of the boards 2 are heat-joined by means of heat conduction from the heating device heated by the high frequency coil 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoelectric conversion module joining jig.

[0002]

2. Description of the Related Art Conventionally, when a thermoelectric element and a substrate of a thermoelectric conversion module in which a plurality of thermoelectric elements and a substrate are combined are heated and joined, a thermoelectric conversion module and jigs necessary for joining are placed in an electric furnace. Put in and heat the whole. However, when the thermoelectric conversion module is joined in an electric furnace, not only the joint between the substrate and the thermoelectric conversion element but also the jigs necessary for the joint are heated together. It is difficult to shorten the heat cycle of heating and cooling by reducing the heat capacity of the entire furnace such as walls. Furthermore, in order to join at two different temperatures, high temperature joining and low temperature joining, in an electric furnace, two chambers are required to join the high temperature side first, cool it, and then join the low temperature side and then cool it again.
It is difficult to bond two different temperatures at the same time in the chamber.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and the heat capacity of the member to be heated can be reduced to shorten the heat cycle of heating and cooling, and at the same time, different An object of the present invention is to provide a thermoelectric conversion module joining jig capable of joining at two kinds of temperatures.

[0004]

To this end, the present invention provides a jig for heating and joining the thermoelectric element and the substrate of a thermoelectric conversion module in which a plurality of thermoelectric elements and two substrates sandwiching the thermoelectric element are combined. And a high-frequency heating device surrounding the heating jig, the heating jig being in contact with each of the substrates.

[0005]

In the thermoelectric conversion module joining jig of the present invention, the joining portion between the substrate contacting the heating jig and the plurality of thermoelectric elements is joined by heating by heat conduction from the heating jig heated by the high frequency heating device. To do. Further, by heating the heating jigs that come into contact with the two substrates to different temperatures, the respective substrates are simultaneously joined at two different temperatures.

[0006]

EXAMPLE An example of a thermoelectric conversion module joining jig according to the present invention will be described with reference to the cross-sectional view of FIG. 1. The thermoelectric conversion module 1 is composed of two thermoelectric elements each having a rectangular prism shape with a length and width of 4 mm and a height of 8 mm. , Each of which has a thickness of 32 mm and a thickness of 2 mm and which is sandwiched by a pair of plate-shaped substrates 3, and each of which heats the substrate 3 through the carbon sheet 4 on the outside of each substrate 3 has a length and a width. A 32 mm, 10 mm high quadrangular prism is formed, and the high frequency heating portion is contacted with a copper heating jig 5 which is a cylinder with a diameter of 30 mm and a height of 50 mm, and the high frequency coil 6 is surrounded by each of the cylindrical portions. There is.

In such an apparatus, the columnar portion of each heating jig 5 is heated by the high-frequency coil 6 in an inert gas atmosphere, the joint surface between the upper substrate 3 and the thermoelectric element 2 is 650 ° C., and the lower substrate 3 is The joint surface of the thermoelectric element 2 and the thermoelectric element 2 is set to 300 ° C., and the surface pressure at the time of joining is set to 0.09 Mpa by pressing the heating jig 5. The heat cycle at this time is 2 hours from the start of heating to the completion of cooling.

Thus, according to such an apparatus, the high-frequency coil 6 heats the heating jig 5, and the heat conduction from the heating jig 5 heats the joint portion between each substrate 3 of the thermoelectric conversion module 1 and the thermoelectric element 2. By doing so, the upper joint can be uniformly heated to a high temperature of 650 ° C. and the lower joint can be uniformly heated to a low temperature of 300 ° C., and two joints can be simultaneously formed. Further, the heat capacity of the member to be heated can be reduced, and the heat cycle of heating and cooling can be shortened.

[0009]

In summary, according to the present invention, there is provided a jig for heating and joining the thermoelectric element and the substrate of a thermoelectric conversion module in which a plurality of thermoelectric elements and two substrates sandwiching the thermoelectric element are combined. By having the heating jig in contact with each substrate and the high-frequency heating device surrounding the heating jig, the heat capacity of the member to be heated can be reduced and the heat cycle of heating and cooling can be shortened, and at the same time. INDUSTRIAL APPLICABILITY The present invention is extremely useful industrially because a thermoelectric conversion module joining jig that can be joined at two different temperatures is obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a thermoelectric conversion module joining jig of the present invention.

[Explanation of symbols]

 1 thermoelectric conversion module 2 thermoelectric element 3 substrate 4 carbon sheet 5 heating jig 6 high frequency coil

Claims (1)

[Claims] 1. A jig for heat-bonding a thermoelectric element and a substrate of a thermoelectric conversion module, which is a combination of a plurality of thermoelectric elements and two substrates sandwiching the thermoelectric element, wherein heating is performed by contacting each of the substrates. A thermoelectric conversion module joining jig comprising a jig and a high-frequency heating device surrounding the heating jig.