JP2946209B1 - Manufacturing method of thermoelectric power generation unit - Google Patents

Abstract

An object of the present invention is to provide a method of manufacturing a thermoelectric power generation unit containing one or more thermoelectric elements, in which the thermoelectric elements are not likely to be broken. In a method of manufacturing a thermoelectric generator unit, a lead substrate is fixed to a first heat transfer plate. The plurality of thermoelectric elements 140 are fixed to the first heat transfer plate 120 so that the first thermoelectric element substrate and the first heat transfer plate can conduct heat. A plurality of thermoelectric elements 140 are wired in series by conducting wire conduction between the thermoelectric element terminal pattern and the lead pattern of the lead board. The unit frame 160 is attached to the first heat transfer plate 120. The second heat transfer plate 170 is attached to the unit frame 160 so that the second thermoelectric element substrate 142 and the second heat transfer plate 170 can conduct heat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a thermoelectric generator unit containing a thermoelectric element for generating an electromotive force based on the Seebeck effect, and more particularly to a method for manufacturing a thermoelectric generator unit containing one or more thermoelectric elements. The present invention relates to a method for manufacturing a thermoelectric generation unit that can be efficiently and economically manufactured.

[0002]

2. Description of the Related Art In a conventional thermoelectric wristwatch, for example, as disclosed in Japanese Patent Application Laid-Open No. 55-20483, a thermoelectric generator made up of a number of individual component parts is made of a metal casing. It is located between the bottom and the support ring. This thermoelectric generator (Peltier battery)
A hot pole is placed facing the bottom of the casing and a cold pole is placed facing the metal cover. In other structures,
The thermoelectric generator is held against the intermediate ring via a shock absorber. In other conventional electronic watches,
As disclosed in JP-A-8-43555,
With the first insulator as the heat absorbing side and the second insulator as the heat radiating side, an electromotive force is obtained at the output end, the electromotive force is stored in the storage means, and the time display means is operated by the storage means. I have.

In a timepiece having a conventional power generating element,
As disclosed in JP-A-9-15353,
Four thermoelectric elements are arranged separately from the space occupied by the movement in the space inside the wristwatch. In this thermoelectric element, a p-type thermoelectric element and an n-type thermoelectric element are connected at an end to form a thermocouple. All the thermocouples are connected in series to form a thermoelectric element.
In a conventional thermoelectric power generation wristwatch, a real open flat 7-3259 is used.
As disclosed in Japanese Patent Publication No. 0, a thermoelectric generator is disposed between a back cover and a module cover. The thermoelectric generator includes a number of thermocouples. Further, in a conventional thermoelectric conversion element and a method of manufacturing the same, Japanese Patent Application Laid-Open No. 8-43555
As disclosed in Japanese Unexamined Patent Publication, a P-type thermoelectric material wafer is bonded to a P-type substrate on which electrodes are wired with a gap,
The N-type thermoelectric material wafer has been bonded to the N-type substrate on which the electrodes are wired with a gap. Next, the P-type substrate to which the P-type thermoelectric material wafer is bonded and the N-type substrate to which the N-type thermoelectric material wafer is bonded face-to-face and bonded together.
A bond was formed.

[0004]

However, none of the conventional documents discloses a method for mounting a thermoelectric element on a thermoelectric unit, and manufactures a thermoelectric unit containing one or more thermoelectric elements. No method disclosed. Thermoelectric elements have low resistance to external forces. In particular, in the thermoelectric element, since a large number of p-type thermoelectric elements and n-type thermoelectric elements in the form of elongated columns are arranged, the p-type thermoelectric element and the n-type thermoelectric element are oriented at right angles to their longitudinal directions. When a force is applied, the thermoelectric element may be broken. Further, even when a force along the longitudinal direction is applied to the p-type thermoelectric element and the n-type thermoelectric element, if the force exceeds a certain magnitude, the thermoelectric element may be broken.

[0005] Conventionally, the thermoelectric element is directly arranged in the space inside the wristwatch without mounting the thermoelectric element as a thermoelectric generation unit, so that the strength of the thermoelectric element cannot be increased. When a plurality of thermoelectric elements are used, a means for connecting the thermoelectric elements is required.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a thermoelectric power generation unit containing one or more thermoelectric elements without the risk of breakage of the thermoelectric elements. Another object of the present invention is to provide a method of manufacturing a thermoelectric generation unit that can efficiently manufacture a thermoelectric generation unit. Another object of the present invention is to provide a method of manufacturing a thermoelectric power generation unit that can mount a plurality of thermoelectric elements using a simple process and a small number of components.

[0007]

According to the present invention, there is provided a method for manufacturing a thermoelectric generator unit containing thermoelectric elements, comprising: a lead pattern for connecting a plurality of thermoelectric elements in series; A lead substrate having an output terminal pattern constituting an output terminal of the power generation unit is fixed to a first heat transfer plate formed of a heat conductive material. next,
A plurality of thermoelectric elements having first and second thermoelectric element substrates are fixed to the first heat transfer plate, and the first thermoelectric element substrate and the first heat transfer plate of the plurality of thermoelectric elements can be thermally conducted. I do. Next, the thermoelectric element terminal patterns of the thermoelectric elements are electrically connected to the lead patterns of the lead board corresponding to the thermoelectric element terminal patterns by wire bonding, and the thermoelectric elements are wired in series.

Next, a unit frame for protecting the plurality of thermoelectric elements is attached to the first heat transfer plate. Next, a second heat transfer plate made of a heat conductive material is attached to the unit frame,
The second thermoelectric element substrate of each of the plurality of thermoelectric elements and the second heat transfer plate are made heat conductive. In the method for manufacturing a thermoelectric generator unit according to the present invention, before the step of attaching the second heat transfer plate to the unit frame, a step of applying grease for allowing the second heat transfer plate and the second thermoelectric element substrate to conduct heat. It is preferred to include With this grease, it is possible to reliably conduct heat between the second heat transfer plate and the second thermoelectric element substrate. Further, according to the present invention, in a method for manufacturing a thermoelectric generation unit containing thermoelectric elements, a lead having a lead pattern for wiring a plurality of thermoelectric elements in series and an output terminal pattern constituting an output terminal of the thermoelectric generation unit The substrate is fixed to a first heat transfer plate made of a heat conductive material.

Next, a unit frame for protecting the plurality of thermoelectric elements is attached to the first heat transfer plate. Next, the first and second
A plurality of thermoelectric elements having the thermoelectric element substrates are fixed to a first heat transfer plate to which a unit frame is attached, and the first thermoelectric element substrates and the first heat transfer plates of the plurality of thermoelectric elements are thermally connected. Enable conduction. Next, the thermoelectric element terminal patterns of the thermoelectric elements are electrically connected to the lead patterns of the lead board corresponding to the thermoelectric element terminal patterns by wire bonding, and the thermoelectric elements are wired in series. Next, a second heat transfer plate formed of a material that can conduct heat is attached to the unit frame, so that the second heat transfer element substrate and the second heat transfer plate of each of the plurality of thermoelectric elements can conduct heat. .

According to such a manufacturing method, it is possible to manufacture a thermoelectric power generation unit accommodating a plurality of thermoelectric elements without the risk of breakage of the thermoelectric elements. Further, the present invention provides a method for manufacturing a thermoelectric generator unit containing thermoelectric elements,
A lead substrate having an output terminal pattern constituting an output terminal of the thermoelectric generator unit is fixed to a first heat transfer plate formed of a heat conductive material. Next, the thermoelectric element having the first and second thermoelectric element substrates is fixed to the first heat transfer plate so that the first thermoelectric element substrate and the first heat transfer plate of the thermoelectric element can conduct heat. Next, conduction is established between the thermoelectric element terminal pattern of the thermoelectric element and the output terminal pattern of the lead board corresponding to the thermoelectric element terminal pattern by wire bonding. Next, a unit frame for protecting the thermoelectric element is attached to the first heat transfer plate.

Next, a second conductive member made of a heat conductive material is used.
A heat transfer plate is attached to the unit frame to allow heat conduction between the second thermoelectric element substrate of the thermoelectric element and the second heat transfer plate. Further, according to the present invention, in the method for manufacturing a thermoelectric generator unit accommodating a thermoelectric element, a lead substrate having an output terminal pattern constituting an output terminal of the thermoelectric generator unit may be provided with a first heat transfer material formed of a heat conductive material. Stick to the board. Next, a unit frame for protecting the thermoelectric element is attached to the first heat transfer plate. next,
A plurality of thermoelectric elements having first and second thermoelectric element substrates are fixed to a first heat transfer plate to which a unit frame is attached. Next, conduction is established between the thermoelectric element terminal pattern of the thermoelectric element and the output terminal pattern of the lead board corresponding to the thermoelectric element terminal pattern by wire bonding.

Next, a second conductive member made of a heat conductive material is used.
A heat transfer plate is attached to the unit frame to allow heat conduction between the second thermoelectric element substrate of the thermoelectric element and the second heat transfer plate. According to such a manufacturing method, there is no possibility that the thermoelectric element is destroyed.
A thermoelectric power generation unit accommodating two thermoelectric elements can be manufactured. The present invention also provides a method for manufacturing a thermoelectric generator unit containing thermoelectric elements, wherein a plurality of thermoelectric elements having first and second thermoelectric element substrates are formed by a first heat transfer plate formed of a material capable of conducting heat. And heat conduction between the first thermoelectric element substrate and the first heat transfer plate of each of the plurality of thermoelectric elements. Next, a lead pattern of a lead board having a lead pattern for wiring a plurality of thermoelectric elements in series and an output terminal pattern constituting an output terminal of the thermoelectric generator unit is connected to each thermoelectric element terminal of the plurality of thermoelectric elements. A plurality of thermoelectric elements are wired in series so as to be conductively fixed to the pattern.

Next, a unit frame for protecting the plurality of thermoelectric elements is attached to the first heat transfer plate. Next, a second heat transfer plate made of a heat conductive material is attached to the unit frame,
The second thermoelectric element substrate and the second heat transfer plate of each of the plurality of thermoelectric elements are allowed to conduct heat. Further, the present invention provides a method for manufacturing a thermoelectric generator unit containing thermoelectric elements, in which a plurality of thermoelectric elements having first and second thermoelectric element substrates are wired in series, and Arranging the first heat transfer plate and the second heat transfer plate so as to be protected by the first heat transfer plate and the second heat transfer plate formed of a heat conductive material; Each of the first thermoelectric element substrates is capable of conducting heat with the first heat transfer plate, and each second thermoelectric element substrate of the plurality of thermoelectric elements is capable of conducting heat with the second heat transfer plate. I made it.

Preferably, the step of arranging the first heat transfer plate and the second heat transfer plate includes a step of providing a unit frame for protecting the plurality of thermoelectric elements. By using such a manufacturing method, a thermoelectric power generation unit can be efficiently manufactured. A thermoelectric generation unit manufactured using the thermoelectric generation unit manufacturing method of the present invention is an electronic timepiece,
Alarm, timer, pager, radio, tv,
Flashlight, electronic calculator, calculator, electronic dictionary, conversation practice machine,
It can be used as a power source for various portable devices including a mobile phone, a communication device, a display device, and a light emitting device.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. (1) First Embodiment First, a first embodiment of a method for manufacturing a thermoelectric generator unit of the present invention will be described. Referring to FIG. 1, in a first embodiment of a method for manufacturing a thermoelectric generator unit of the present invention,
First, the first heat transfer plate 120 is prepared (Step 101).
Referring to FIGS. 2 and 3, the first heat transfer plate 120 is made of a metal having good heat conductivity, for example, aluminum or copper. When the first heat transfer plate 120 is made of copper, its surface is preferably plated with nickel. First heat transfer plate 12
Reference numeral 0 denotes a thin plate-like member having a substantially rectangular planar shape. The first heat transfer plate 120 includes a lead board base part 120a for mounting a lead board, lead board guide pins 120b1 and 120b2 for guiding the lead board, and thermoelectric element base parts 120d1-1 for mounting a thermoelectric element.
20d10.

Two lead board guide pins 120b1, 1
20b2 are provided at substantially the center in the longitudinal direction of the first heat transfer plate 120 with a space therebetween. When ten thermoelectric elements are used, ten thermoelectric element base portions 120d are used.
1 to 120d10 are provided on each side of the lead board base portion 120a, five at a time in the longitudinal direction at intervals. The planar shape of the thermoelectric element base portions 120d1 to 120d10 is determined according to the planar shape of the thermoelectric element. The thickness of the thermoelectric element base portions 120d1 to 120d10 is smaller than the thickness of the lead substrate base portion 120a. Referring to FIG. 4, the lead substrate 130 has an elongated shape, and a plurality of lead substrates 130 are manufactured in a state of being connected in the longitudinal direction. The lead substrate 130 may be a glass epoxy substrate or a polyimide film substrate.

In the method of manufacturing a thermoelectric generator unit according to the present invention, a plurality of lead boards 130 may be processed in a state where they are connected in the longitudinal direction, and the lead boards 130 may be separated in a final step. The thermoelectric generator unit may be manufactured by separating the lead substrates 130 one by one. The lead board 130 connected in the longitudinal direction shown in FIG. 4 is cut at the lines 130c1 and 130c2 shown in FIG.
It is processed into one lead substrate 130 shown in FIG. FIG.
, Lead patterns 130a1 to 130a9 for wiring ten thermoelectric elements in series, and two output terminal patterns 1 forming output terminals of the thermoelectric generator unit
30t1 and 130t2 are provided on the lead substrate 130.

Guide holes 130b1 and 130b2 for positioning the lead substrate 130 when the lead substrate 130 is mounted on the first heat transfer plate 120 are provided at a substantially central portion in the longitudinal direction of the lead substrate 130 with a space therebetween. Can be The positions of the guide holes 130b1 and 130b2 are determined according to the positions of the lead board guide pins 120b1 and 120b2. In order to easily position the lead substrate 130, for example, it is preferable to form one guide hole 130b2 in the form of an elongated hole. Referring to FIG. 1, the first
An adhesive is applied to the lead board base portion 120a of the heat transfer plate 120 (Step 102). This adhesive is preferably an epoxy-based adhesive. The adhesive may be another type of adhesive, such as a heat-sensitive adhesive, or may be a sheet adhesive.

Referring to FIGS. 5 and 6, the lead board guide pin 120b1 is fitted into the guide hole 130b1, and the lead board guide pin 120b2 is inserted into the guide hole 130b2.
Then, the lead substrate 130 is bonded to the first heat transfer plate 120 (step 103). Referring to FIGS. 8 and 9,
The thermoelectric element 140 used in the thermoelectric generator unit manufactured by the method of the present invention includes an upper thermoelectric element substrate 142, a lower thermoelectric element substrate 144, a plurality of P-type semiconductors 146, and a plurality of N-type semiconductors 148. The upper thermoelectric element substrate 142
It has a plurality of conduction patterns 142a for conducting the P-type semiconductor 146 and the N-type semiconductor 148. The lower thermoelectric element substrate 144 includes a P-type semiconductor 146 and an N-type semiconductor 148.
And a plurality of conduction patterns 144a for conducting the
And the terminal patterns 144b1 and 144 of the thermoelectric element 140
b2.

Referring to FIGS. 9, 10 and 11, the plurality of P-type semiconductors 146 and the plurality of N-type semiconductors 148
The P-type semiconductors 146 and the N-type semiconductors 148 are connected to the pattern of the upper thermoelectric element substrate 142 and the pattern of the lower thermoelectric element substrate 144 so that they are alternately connected in series. In the thermoelectric element 140 configured as described above, for example, if the side with the upper thermoelectric element substrate 142 is the heat radiation side and the side with the lower thermoelectric element substrate 144 is the heat absorption side, electrons are generated in the N-type semiconductor 148. Upper thermoelectric element substrate 1 on heat radiation side
42, and in the P-type semiconductor 146, electrons move toward the lower thermoelectric element substrate 144 on the endothermic side. Each of the P-type semiconductors 146 and each of the N-type semiconductors 148 are connected to the conduction pattern 1 of the upper thermoelectric element substrate 142.
Conducting pattern 144 between 42 a and lower thermoelectric element substrate 144
a, the heat transfer between the P-type semiconductor 146 and the N-type semiconductor 148 is converted into a current, and the terminal pattern 1 of the lower thermoelectric element substrate 144 is electrically connected.
An electromotive force is generated between 44b1 and 144b2.

Referring to FIG. 1 and FIG. 2, next, the thermoelectric element base portions 120d1 to 120d10 of the first heat transfer plate 120 will be described.
Is applied with an adhesive (step 104). The adhesive used in this step 104 is, for example, a thermally conductive adhesive such as a silver paste. The adhesive may be an epoxy-based adhesive having thermal conductivity, or
Other types of adhesives having thermal conductivity may be used. Referring to FIGS. 1, 12, and 13, ten thermoelectric elements 140a1 to 140a10 are fixed to thermoelectric element base portions 120d1 to 120d10 of first heat transfer plate 120, respectively (step 105). In this step 105, with the terminal patterns 144 b 1 and 144 b 2 of each lower thermoelectric element substrate 144 arranged near the lead substrate 130, the lower side surface of the lower thermoelectric element substrate 144 of the thermoelectric element 140 is attached to the thermoelectric element base portions 120 d 1 to 120 d 10 With silver paste. Thus, the lower thermoelectric element substrate 144 of the thermoelectric element 140 and the first heat transfer plate 120 can be thermally conducted.

Therefore, as shown in FIG. 12, five thermoelectric elements 140 are arranged on one side of the lead substrate 130,
Five thermoelectric elements 140 are arranged on lead board 130 on the other side. In the embodiment shown in FIG. 1 of the thermoelectric generation unit manufactured by the method of the present invention, ten thermoelectric elements 14
Although 0 is used, the number of thermoelectric elements 140 may be one, or may be two or more. Further, the number of thermoelectric elements 140 is preferably an even number, but may be an odd number. Referring to FIG. 1, next, step 105
Is dried (step 106). In this step 106, for example, the drying temperature is 120 ° C. to 15 ° C.
At 0 ° C., the drying time is preferably between 2 hours and 5 hours.

Next, a process inspection (1) is performed (Step 10).
7). In the process inspection (1), the resistance of each thermoelectric element 140 is measured. Referring to FIG. 1, FIG. 14 and FIG. 15, next, the terminal patterns 144b1 and 144b2 of the ten thermoelectric elements 140a1 to 140a10, and the lead patterns 130a1 to 130a9 of the lead board 130 or the output terminal patterns 130t1 and 130t2, respectively. Is conducted by wire bonding 150 (step 108).
The wire bonding 150 includes a plurality of thermoelectric elements 14.
The thermoelectric elements 140 are wired so that 0 is connected in series. Referring to FIG. 14, conduction is established between the terminal pattern 144b1 of the thermoelectric element 140a1 and the output terminal pattern 130t1 of the lead board 130 by wire bonding 150. Terminal pattern 144b2 of thermoelectric element 140a1
And the lead pattern 130a1 of the lead substrate 130 are electrically connected by the wire bonding 150. Similarly, thermoelectric elements 140a1 to 140a5 are wired in series by wire bonding 150,
A thermoelectric element 140a10 is wired in series from a6. The thermoelectric element 140a5 and the thermoelectric element 140a10 are wired in series by the wire bonding 150 via the lead pattern 130a9 of the lead substrate 130.

Terminal pattern 144 of thermoelectric element 140a6
Conduction is made between b1 and the lead pattern 130a5 of the lead substrate 130 by wire bonding 150. Terminal pattern 140b2 of thermoelectric element 140a6 and lead substrate 1
The electrical connection between the output terminal pattern 130t2 and the 30 output terminal patterns 130t2 is established by wire bonding 150. By this step 108,
Ten thermoelectric elements 140a1 to 140a10 are connected in series, and the patterns 130t1 and 130t1 of the lead substrate 130 are connected.
30t2 constitutes an output terminal of the thermoelectric generator unit. Referring to FIG. 1, next, a process inspection (2) is performed (Step 1).
09). In the process inspection (2), ten thermoelectric elements 140
The resistance of a thermoelectric generation unit in which a1 to 140a10 are connected in series is measured.

Referring to FIGS. 16 and 17, the unit frame 160 used for the thermoelectric generator unit manufactured by the method of the present invention is a member having a substantially rectangular
The thermoelectric elements 140a1 to 140a10 are configured in a shape that can surround them. The unit frame 160 has a lower step 160d for mounting the first heat transfer plate 120 and an upper step 1 for mounting the second heat transfer plate 120.
60e, and a lead step 160f for escape of the lead substrate 130. The distance between the lower step 160d and the upper step 160e of the unit frame 160 is the first distance.
The heat transfer plate 120 and the second heat transfer plate 170 are
When attached to the thermoelectric element 140, there is a gap between the lower surface of the second heat transfer plate 170 and the upper surface of the upper thermoelectric element substrate 142 of the thermoelectric element 140.

The unit frame 160 is preferably made of a plastic such as ABS resin, polycarbonate or acrylic. Referring to FIG. 1, FIG. 18 and FIG. 19, next, the unit frame 160 has ten thermoelectric elements 140a1 to 140a1.
140a10 so as to surround the unit frame 16
0 is fixed to the first heat transfer plate 120 (step 110). At this time, the stepped portion 160 is mounted on the lead substrate of the unit frame 160.
f is arranged so as to escape from the upper surface of the lead substrate 130. The fixing of the unit frame 160 to the first heat transfer plate 120
The unit frame 160 may be fitted, bonded, or a part of the unit frame 160 may be welded to the first heat transfer plate 120.

Step 1 of the lead board of the unit frame 160
The gap between 60f and lead substrate 130 and the gap between first heat transfer plate 120 and lead substrate 130 are preferably sealed with an adhesive or the like. Referring to FIG.
Grease is applied to ten thermoelectric elements 140a1 to 140a10.
On the upper surface of the upper thermoelectric element substrate 142 (step 11
1). The grease used in this step 111 is preferably a silicone grease having good thermal conductivity, for example, a product name “Toshiba Silicone Compound”. Referring to FIG. 20, the second heat transfer plate 170 is made of a metal having good heat conductivity, for example, aluminum or copper. Second heat transfer plate 1
When 70 is made of copper, its surface is preferably plated with nickel.

The second heat transfer plate 170 is a thin plate member having a substantially rectangular planar shape. The outer shape of the second heat transfer plate 170 is substantially the same as the outer shape of the first heat transfer plate 120,
The size and the shape are such that they can be attached to the upper step 160e of the unit frame 160. Second heat transfer plate 170
Is preferably the same as that of the first heat transfer plate 120. Therefore, the first heat transfer plate 120 can be manufactured using the same raw material as that of the second heat transfer plate 170. Referring to FIG. 1, FIG. 21 and FIG.
The heat transfer plate 170 is fixed to the upper step 160e of the unit frame 160 (step 112). At this time, the second heat transfer plate 17
There is a gap between the lower surface of the thermoelectric element 140 and the upper surface of the upper thermoelectric element substrate 142 of the thermoelectric element 140, and the silicone grease 172 is disposed in this gap. Therefore, the second heat transfer plate 170 and the upper thermoelectric element substrate 1 are formed by the silicone grease 172.
42 are made heat conductive.

The second heat transfer plate 170 may be fixed to the unit frame 160 by fitting, bonding, or welding a part of the unit frame 160 to the second heat transfer plate 170. May be. By attaching the second heat transfer plate 170 to the unit frame 160, the thermoelectric generator unit 180
Thermoelectric elements 140a1 to 140 housed in
a10 can be reliably protected. Referring to FIG. 1, next, a process inspection (3) is performed (step 113). In the process inspection (3), the resistance of the thermoelectric generation unit 180 is measured. Next, a step inspection (4) is performed (step 114). In the process inspection (4), the power generation performance of the thermoelectric generation unit is measured. The measurement of the power generation performance is performed by the thermoelectric generation unit 1 using a heater.
The heat generation plate 180 is heated by heating one of the heat transfer plates.
Is measured by a voltmeter. When performing this measurement, the difference between the temperature in the room where the thermoelectric generator unit 180 is disposed and the heating temperature of the heater is kept constant.

In the method for manufacturing a thermoelectric generator unit according to the present invention, when a plurality of lead substrates 130 are processed in a state of being connected in the longitudinal direction, the lead substrates 130 are connected to each other as shown in FIG.
Are cut at the lines 130c1 and 130c2 shown in FIG. 4 to separate the thermoelectric generation units 180, thereby manufacturing individual thermoelectric generation units 180. Cutting for separating the thermoelectric generation unit 180 may be performed before the process inspection (3), may be performed between the process inspection (3) and the process inspection (4), or may be performed. ). If necessary, any process inspection may be omitted, or
Additional process inspections may be performed. Thermoelectric generation unit 180 manufactured using the method for manufacturing a thermoelectric generation unit of the present invention
FIG. 23 and an example of the sizes of the components used in the thermoelectric generator are shown in FIG.

The longitudinal length of the thermoelectric unit: 16.2 mm The lateral width of the thermoelectric unit: 10.8 mm The thickness of the thermoelectric unit: 2.3 mm The longitudinal length of the thermoelectric element: 2.4 mm Thermoelectric element lateral width: 2.2 mm Thermoelectric element thickness: 1.3 mm Maximum thickness of first heat transfer plate: 0.5 mm Thickness of second heat transfer plate: 0 0.5 mm Distance between the outer surface and the inner surface of the unit frame: 0.8 mm When a voltage is generated using the thermoelectric generator unit 180, the first heat transfer plate 120 is used as a heat absorbing plate and the second transfer plate is used. Hot plate 1
70 may be a heat radiating plate, or the first heat transfer plate 12
0 may be a heat radiating plate and the second heat transfer plate 170 may be a heat absorbing plate. The polarity of the voltage generated between the patterns 130t1 and 130t2 of the lead substrate 130 changes depending on how the heat absorbing plate and the heat radiating plate are determined. (2) Second Embodiment Next, a second embodiment of the method for manufacturing a thermoelectric generator unit of the present invention will be described. In the second embodiment of the method for manufacturing a thermoelectric generator of the present invention, the components used are the same as the components used in the first embodiment of the method for manufacturing a thermoelectric generator of the present invention described above. The dimensions, shape, and performance of the completed thermoelectric generation unit are the same as those of the thermoelectric generation unit manufactured by the first embodiment of the method for manufacturing a thermoelectric generation unit of the present invention.

The second method of the present invention for producing a thermoelectric generator unit
The difference between this embodiment and the first embodiment is the order of the steps. Therefore, the second embodiment of the method for manufacturing a thermoelectric generation unit of the present invention will be described in detail below, focusing on the differences from the first embodiment of the method for manufacturing a thermoelectric generation unit of the present invention. . Referring to FIG. 24, first, in the second embodiment of the method for manufacturing a thermoelectric generator unit of the present invention, a first heat transfer plate is prepared (Step 201). Next, an epoxy-based adhesive is applied to the lead board base portion 120a of the first heat transfer plate 120 (step 202). Next, the lead substrate 130 is bonded to the first heat transfer plate 120 (Step 20).
3). 24 and 25, the unit frame 160 is fixed to the first heat transfer plate 120 (Step 20).
4). At this time, the stepped portion 160f of the lead board of the unit frame 160 is arranged so as to escape from the upper surface of the lead board 130.

Step 1 of the lead frame of the unit frame 160
The gap between 60f and lead substrate 130 and the gap between first heat transfer plate 120 and lead substrate 130 are preferably sealed with an adhesive or the like. Referring to FIG. 24, next, thermoelectric element base portions 120d1 to 120d1 of first heat transfer plate 120 are provided.
A heat conductive adhesive such as a silver paste is applied to 20d10 (Step 205). Referring to FIG. 24 and FIG. 26, next, ten thermoelectric elements 140a1 to 140a1
0 is the thermoelectric element base portion 120 of the first heat transfer plate 120, respectively.
It is fixed to d1 to 120d10 (step 206). Thereby, the lower thermoelectric element substrate 140 of the thermoelectric element 140 and the first heat transfer plate 120 can conduct heat.

Referring to FIG. 24, the silver paste used in step 205 is dried (step 207). next,
Step inspection (1) is performed (step 208). Process inspection (1)
Now, the resistance of each thermoelectric element 140 is measured. Referring to FIGS. 24 and 27, next, ten thermoelectric elements 140a
Each terminal pattern 144b of 1 to 140a10
1, 144b2 and the lead patterns 130a1 to 130a9 of the lead substrate 130 or the output terminal patterns 130t.
1, 130t2 is made conductive by wire bonding 150 (step 209). This wire bonding 15
0 wires the thermoelectric elements 140 such that the plurality of thermoelectric elements 140 are connected in series.

Referring to FIG. 24, next, a process inspection (2) is performed (step 210). In process inspection (2), 1
The resistance of a thermoelectric generation unit in which zero thermoelectric elements 140a1 to 140a10 are connected in series is measured. Next, silicone grease was applied to ten thermoelectric elements 140a1 to 140a1.
0 on the upper surface of the upper thermoelectric element substrate 142 (step 21).
1). Next, the second heat transfer plate 170 is fixed to the upper step 160e of the unit frame 160 (step 212). The silicone grease 172 allows the second heat transfer plate 170 and the upper thermoelectric element substrate 142 to conduct heat. Next, a process inspection (3) is performed (process 213). In the process inspection (3), the resistance of the thermoelectric generation unit 180 is measured.

Next, a process inspection (4) is performed (Step 21).
4). In the process inspection (4), the power generation performance of the thermoelectric generation unit is measured. Second Method of Manufacturing Thermoelectric Unit of the Present Invention
In the embodiment, when the plurality of lead substrates 130 are processed in a state of being connected in the longitudinal direction, the lead substrates 130 are cut at the lines 130c1 and 130c2, and the thermoelectric generation units 180 are separated from each other. Is manufactured. Cutting for separating the thermoelectric generation unit 180 may be performed before the process inspection (3), may be performed between the process inspection (3) and the process inspection (4), or may be performed. ). (3) Third Embodiment Next, a third embodiment of the method for manufacturing a thermoelectric generator unit of the present invention will be described. In the third embodiment of the method for manufacturing a thermoelectric generator unit according to the present invention, the thermoelectric generator unit contains only one thermoelectric element. Therefore, the types of components used in the third embodiment of the method of manufacturing a thermoelectric generator of the present invention are the same as those used in the first embodiment of the method of manufacturing a thermoelectric generator of the present invention. , Their dimensions and shapes are different.

The third method of the present invention for producing a thermoelectric generator unit.
The embodiment will be described below in detail focusing on differences from the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention. Referring to FIG. 28, in the third embodiment of the method for manufacturing a thermoelectric generator unit of the present invention, first, a first heat transfer plate 320 is prepared. First heat transfer plate 320
Is a thin plate member having a substantially square planar shape.
The first heat transfer plate 320 has a lead board base part 320a for mounting the lead board 330 and a thermoelectric element base part 320d for mounting the thermoelectric element 340. The planar shape of the thermoelectric element base portion 320d is determined according to the planar shape of the thermoelectric element. The thickness of the thermoelectric element base portion 320d is smaller than the thickness of the lead substrate base portion 320a.

The lead substrate 330 may be a glass epoxy substrate or a polyimide film substrate. Configure the output terminal of the thermoelectric generator unit 2
Two output terminal patterns 330 t 1 and 330 t 2 are provided on the lead substrate 330. Next, the first heat transfer plate 32
An epoxy-based adhesive is applied to a portion corresponding to the lead substrate 330 of the lead substrate base portion 320a of No. 0. Next, the lead substrate 330 is bonded to the first heat transfer plate 320. The thermoelectric element 340 includes an upper thermoelectric element substrate 342 and a lower thermoelectric element substrate 3.
44, a plurality of P-type semiconductors (not shown), and a plurality of N-type semiconductors (not shown). Upper thermoelectric element substrate 342
Has a plurality of conduction patterns (not shown) for conducting the P-type semiconductor and the N-type semiconductor. The lower thermoelectric element substrate 344 includes a plurality of conduction patterns (not shown) for conducting the P-type semiconductor and the N-type semiconductor, and the thermoelectric element 3.
40 terminal patterns 344b1 and 344b2.

The structure and operation of thermoelectric element 340 are similar to those of thermoelectric element 140. Next, a thermoconductive adhesive such as a silver paste is applied to the thermoelectric element base portion 320d of the first heat transfer plate 320. Next, one thermoelectric element 340 is connected to the thermoelectric element base portion 32 of the first heat transfer plate 320.
It sticks to 0d. In this step, the lower thermoelectric element substrate 344
While the terminal patterns 344b1 and 344b2 are arranged near the lead substrate 330, the lower side surface of the lower thermoelectric element substrate 344 of the thermoelectric element 340 is bonded to the thermoelectric element base portion 320d with silver paste. Thereby, the lower thermoelectric element substrate 344 and the first heat transfer plate 320 of the thermoelectric element 340 can be thermally conducted.

Next, the silver paste used in the above step is dried. Next, the resistance of the thermoelectric element 340 is measured. Next, conduction is established between the terminal pattern 344b1 of the thermoelectric element 340 and the output terminal pattern 330t1 of the lead substrate 330 by wire bonding 350, and the terminal pattern 344b2 of the thermoelectric element 340 and the output terminal pattern 330t2 of the lead substrate 330 are connected. Wire bonding 15 between
It conducts at 0. By this step, the patterns 330t1 and 330t2 of the lead substrate 330 constitute output terminals of the thermoelectric generator unit 380. Next, the unit frame 360
The unit frame 360 is fixed to the first heat transfer plate 320 so as to surround the periphery of the thermoelectric element 340. At this time, a step portion (not shown) of the lead board of the unit frame 360 is arranged so as to escape from the upper surface of the lead board 330.

The fixing of the unit frame 360 to the first heat transfer plate 320 may be performed by fitting, bonding, or welding a part of the unit frame 360 to the first heat transfer plate 320. May be. It is preferable that the gap between the stepped portion of the lead board of the unit frame 360 and the lead board 330 and the gap between the first heat transfer plate 320 and the lead board 330 be sealed with an adhesive or the like. Next, silicone grease is applied to the upper surface of the thermoelectric element substrate 342 on the thermoelectric element 340. The second heat transfer plate (not shown) is a thin plate member having a substantially square planar shape. The outer shape of the second heat transfer plate is substantially the same as the outer shape of the first heat transfer plate 320, and is formed in a size and a shape to be attached to the upper step portion 360e of the unit frame 360.

Next, the second heat transfer plate is fixed to the upper step 360e of the unit frame 360. At this time, there is a gap between the lower surface of the second heat transfer plate and the upper surface of the upper thermoelectric element substrate 342 of the thermoelectric element 340, and silicone grease (not shown) is arranged in this gap. Therefore, the second heat transfer plate and the upper thermoelectric element substrate 342 can be thermally conducted by the silicone grease. By attaching the second heat transfer plate to the unit frame 360, the thermoelectric elements 340 housed in the thermoelectric generator unit 380 can be reliably protected.
Next, the power generation performance of the thermoelectric generation unit 380 is measured. The power generation performance is measured by heating one heat transfer plate of the thermoelectric generation unit 380 with a heater and measuring the voltage output from the thermoelectric generation unit 180 with a voltmeter.

If necessary, any process inspection may be omitted, or an additional process inspection may be performed. (4) Fourth Embodiment Next, a fourth embodiment of the method for manufacturing a thermoelectric generator unit of the present invention will be described. In the fourth embodiment of the method for manufacturing a thermoelectric generator unit according to the present invention, the thermoelectric generator unit contains only one thermoelectric element. Therefore, the types of components used in the fourth embodiment of the method for manufacturing a thermoelectric generator of the present invention are the same as those used in the first embodiment of the method for manufacturing a thermoelectric generator of the present invention. However, their dimensions and shapes are different. However, the components used in the fourth embodiment of the method of manufacturing a thermoelectric generation unit of the present invention have the same dimensions and shapes as those used in the third embodiment of the method of manufacturing a thermoelectric generation unit of the present invention. Is the same as

Fourth Embodiment of the Method for Manufacturing a Thermoelectric Generator Unit of the Present Invention
This embodiment is performed in the same order of steps as the second embodiment of the method for manufacturing a thermoelectric generator unit of the present invention. Therefore,
The method for manufacturing a thermoelectric generation unit according to the present invention, focusing on differences between the fourth embodiment of the method for manufacturing a thermoelectric generation unit of the present invention and the second embodiment of the method for manufacturing a thermoelectric generation unit according to the present invention The fourth embodiment will be described below. Referring again to FIG. 28, in the fourth embodiment of the method for manufacturing a thermoelectric generator unit of the present invention, first, the first heat transfer plate 320 is prepared. Next, an epoxy adhesive is applied to a portion of the first heat transfer plate 320 corresponding to the lead substrate 330 of the lead substrate base portion 320a. Next, the lead substrate 330 is bonded to the first heat transfer plate 320.

Next, unit frame 360 first heat transfer plate 320
Fixed to. The gap between the lead step of the unit frame 360 and the lead board 330 and the first heat transfer plate 32
It is preferable to seal the gap between the lead 0 and the lead substrate 330 with an adhesive or the like. Next, a thermoconductive adhesive such as a silver paste is applied to the thermoelectric element base portion 320d of the first heat transfer plate 320. Next, one thermoelectric element 340 is connected to the first
The heat transfer plate 320 is fixed to the thermoelectric element base portion 320d. Thereby, the lower thermoelectric element substrate 344 and the first heat transfer plate 320 of the thermoelectric element 340 can be thermally conducted. Next, the silver paste used in the above step is dried.

Next, the resistance of the thermoelectric element 340 is measured.
Next, conduction is established between the terminal pattern 344b1 of the thermoelectric element 340 and the output terminal pattern 330t1 of the lead substrate 330 by wire bonding 350, and the thermoelectric element 340
Wire bonding 1 between the terminal pattern 344b2 of FIG.
It conducts at 50. By this step, the lead substrate 330
The patterns 330t1 and 330t2 constitute output terminals of the thermoelectric generator unit. Next, silicone grease is applied to the upper surface of the thermoelectric element substrate 342 on the thermoelectric element 340.
Next, the second heat transfer plate is connected to the upper step 360 of the unit frame 360.
e. At this time, there is a gap between the lower surface of the second heat transfer plate and the upper surface of the upper thermoelectric element substrate 342 of the thermoelectric element 340, and silicone grease (not shown) is arranged in this gap.

Next, the power generation performance of the completed thermoelectric generation unit is measured. (5) Fifth Embodiment Next, a fifth embodiment of the method for manufacturing a thermoelectric generator unit of the present invention will be described. In the fifth embodiment of the method of manufacturing a thermoelectric generation unit according to the present invention, some of the components used are the same as those of the first embodiment of the method of manufacturing a thermoelectric generation unit according to the present invention.
It is the same as the part used in the embodiment. Also,
The size, shape, and performance of the thermoelectric generation unit manufactured by the fifth embodiment of the method of manufacturing a thermoelectric generation unit of the present invention are the same as those of the thermoelectric generation unit manufactured by the first embodiment of the method of manufacturing the thermoelectric generation unit of the present invention. Same as unit. Therefore, the difference between the fifth embodiment of the method for manufacturing a thermoelectric generator of the present invention and the first embodiment of the method for manufacturing a thermoelectric generator of the present invention will be mainly described. A fifth embodiment of the manufacturing method will be described in detail below.

Referring to FIGS. 29, 30 and 31,
In the fifth embodiment of the method of manufacturing a thermoelectric generator unit according to the present invention, first, the first heat transfer plate 520 is prepared (Step 50).
1). The material and outer shape of the first heat transfer plate 520 are almost the same as those of the first heat transfer plate 120. The first heat transfer plate 120 includes a lead board base portion 520a for attaching a lead board, and lead board guide pins 520b for guiding the lead board.
1, 520b2, and thermoelectric element base portions 520d1 to 520d10 for attaching thermoelectric elements. The shape of the inner part of the thermoelectric element base parts 520d1 to 120d10 is larger than the thermoelectric element base parts 120d1 to 120d10. 2
The lead board guide pins 520b1 and 520b2 are provided at substantially the center in the longitudinal direction of the first heat transfer plate 520 with a space therebetween. When ten thermoelectric elements are used, ten thermoelectric element base portions 520d1 to 520d1 are used.
Zeros are provided on each side of the lead board base portion 120a, five at a distance from each other in the longitudinal direction. The planar shape of the thermoelectric element base portions 520d1 to 520d10 is determined according to the planar shape of the thermoelectric element. The thickness of the thermoelectric element base portions 520d1 to 520d10 is smaller than the thickness of the lead substrate base portion 520a.

Next, a thermoconductive adhesive such as a silver paste is applied to the thermoelectric element base portions 520d1 to 520d10 of the first heat transfer plate 520 (step 502). Next, 10
First thermoelectric elements 140a1 to 140a10
Thermoelectric element base portion 520d1 to 520d1 of heat transfer plate 520
0 (Step 503). Therefore, as shown in FIG. 30, five thermoelectric elements 140 are arranged on one side with respect to the longitudinal axis of the first heat transfer plate 520, and five thermoelectric elements 140 are arranged on the first heat transfer plate 520. It is located on the other side with respect to the longitudinal axis. In the embodiment shown in FIG. 30 of the thermoelectric generation unit manufactured by the method of the present invention, ten thermoelectric elements 140 are used. However, the number of thermoelectric elements 140 may be one, or two thermoelectric elements 140 may be used. The number may be more than one.
Further, the number of thermoelectric elements 140 is preferably an even number, but may be an odd number.

Referring to FIG. 29, the silver paste used in step 502 is dried (step 504). In this step 504, for example, the drying temperature is 120 ° C. to 150 ° C.
Preferably, at ° C, the drying time is between 2 hours and 5 hours. Referring to FIG. 32, the lead substrate 530 has an elongated shape, and a plurality of lead substrates 130 are manufactured in a state of being connected in the longitudinal direction. The lead substrate 530 is constituted by a polyimide film substrate whose base is made of polyimide. The lead substrate 530 may be made of a glass epoxy substrate. In the fifth embodiment of the method for manufacturing a thermoelectric generator unit according to the present invention, a plurality of lead substrates 530 may be processed in a state where they are connected in the longitudinal direction, and the lead substrate 530 may be separated in the final step. Alternatively, the thermoelectric generator unit may be manufactured by separating the lead substrates 530 one by one first.

Lead patterns 530a1 to 530a9 for wiring ten thermoelectric elements in series, and two output terminal patterns 53 constituting output terminals of the thermoelectric generator unit
0t1 and 530t2 are provided on the lead substrate 130. The tip 530a1 of each lead pattern
1, 530a12, 530t11, 530t22, 53
0a91, 530a92 project from the base of the polyimide film substrate. Solder bump (not shown)
Is the leading end portion 530a1 of each lead pattern.
1, 530a12, 530t11, 530t22, 53
0a91, 530a92. In this structure, the structure of the other end portion of the lead pattern is the same, so that detailed description thereof will be omitted.

Guide holes 530b1 and 530b2 for positioning the lead substrate 530 when the lead substrate 530 is mounted on the first heat transfer plate 520 are provided at substantially the center in the longitudinal direction of the lead substrate 530 with a space therebetween. Can be The positions of the guide holes 530b1 and 530b2 are determined corresponding to the positions of the lead board guide pins 520b1 and 520b2. In order to easily position the lead substrate 530, for example, it is preferable to form one guide hole 530b2 in the form of an elongated hole. 29, 33, and 34, the lead board guide pin 520b1 is fitted into the guide hole 530b1, and the lead board guide pin 520b is next inserted.
2 into the guide hole 530b2, and
Is disposed on the first heat transfer plate 520 (step 505).

Next, the solder bumps 534 are heated by a heater, and the terminal patterns 144b1 and 144b2 of the ten thermoelectric elements 140a1 to 140a10, the leading end of the lead pattern of the lead board 530, and the leading end of the output terminal pattern. Lead bonding (Step 5)
06). The solder bumps 534 are formed in advance on the leading end of the lead pattern and the leading end of the output terminal pattern on the lead substrate 530. Thermoelectric elements 140a1-1
The respective terminal patterns 144b1 and 14b of 40a10
A solder bump 534 may be formed on 4b2.
Also, before performing the step 506, the solder mass corresponding to the solder bump 534 is placed on the leading end of the lead pattern and the leading end of the output terminal pattern of the lead substrate 530, or
The thermoelectric elements 140a1 to 140a10 may be arranged on the respective terminal patterns 144b1 and 144b2.

By performing lead bonding using the solder bumps 534, the ten thermoelectric elements 140 are connected so that the ten thermoelectric elements 140 are connected in series.
Wire. In step 506, the solder bumps 534
Using gold bumps instead of 10 thermoelectric elements 140
a1 to 140a10 each terminal pattern 144b
1, 144b2 may be lead-bonded to the leading end of the lead pattern of the lead lead board 530 and the leading end of the output terminal pattern. In this case, the leading end of the lead pattern and the leading end of the output terminal pattern of the lead substrate 530, or the thermoelectric elements 140a1 to 140a1
0 of each terminal pattern 144b1, 144b2
Then, a gold bump is formed.

In this step 506, ten thermoelectric elements 140a1 to 140a10 are connected in series, and the patterns 530t1 and 530t2 of the lead board 530 constitute output terminals of the thermoelectric generator unit. Referring to FIG. 29, next, a process inspection (1) is performed (step 507). In the process inspection (1), ten thermoelectric elements 140a1 to 140a
The resistance of a thermoelectric generator unit with a10 connected in series is measured. 29, 35, and 36, next, the unit frame 160 has ten thermoelectric elements 140a1 to 140a.
The unit frame 160 is fixed to the first heat transfer plate 520 so as to surround the periphery of a10 (step 508). Next, silicone grease was applied to ten thermoelectric elements 140a1 to 140a.
a10 is attached to the upper surface of the upper thermoelectric element substrate 142 (step 5
09).

Referring to FIGS. 29, 37 and 38,
Next, the second heat transfer plate 170 is fixed to the upper step 160e of the unit frame 160 (step 510). At this time, the second
There is a gap between the lower surface of the heat transfer plate 170 and the upper surface of the upper thermoelectric element substrate 142 of the thermoelectric element 140, and the silicone grease 172 is disposed in this gap. Therefore, the second heat transfer plate 170 and the upper thermoelectric element substrate 142 can be thermally conducted by the silicone grease 172. Second heat transfer plate 1
By attaching 70 to the unit frame 160, the ten thermoelectric elements 14 housed in the thermoelectric generation unit 580 are
0a1 to 140a10 can be reliably protected.
Referring to FIG. 29, next, a process inspection (2) is performed (step 511). In the process inspection (2), the thermoelectric generation unit 18
Measure the resistance of 0.

Next, a process inspection (3) is performed (Step 51).
2). In the process inspection (3), the power generation performance of the thermoelectric generation unit 580 is measured. The power generation performance is measured by heating one heat transfer plate of the thermoelectric generation unit 580 with a heater and measuring the voltage output from the thermoelectric generation unit 580 with a voltmeter. When performing this measurement, the difference between the temperature in the room where the thermoelectric generator unit 580 is arranged and the heating temperature of the heater is kept constant. In the method for manufacturing a thermoelectric generator unit according to the present invention, when the plurality of lead substrates 530 are processed in a state of being connected in the longitudinal direction, the lead substrates 530 are formed.
Is cut at the lines 530c1 and 530c2 shown in FIG. 37 to separate the thermoelectric generation units 580 to produce individual thermoelectric generation units 530. Thermal power generation unit 58
Cutting for separating 0 may be performed before the process inspection (2), may be performed between the process inspections (2) and (2), or may be performed after the process inspection (2). May go.

If necessary, any process inspection may be omitted, or an additional process inspection may be performed. The size of the thermoelectric generation unit 580 manufactured using the method for manufacturing a thermoelectric generation unit of the present invention and the components used in the thermoelectric generation unit are the same as those of the thermoelectric generation unit 180.

[0059]

As described above, the present invention includes the above-described steps in the method for manufacturing a thermoelectric generator unit, and thus has the following effects. (1) In the thermoelectric generator unit manufactured by the method for manufacturing a thermoelectric generator unit of the present invention, there is no possibility that the thermoelectric element is broken. (2) By using the method for manufacturing a thermoelectric generator unit of the present invention, a thermoelectric generator unit can be efficiently manufactured. (3) By using the method for manufacturing a thermoelectric generator unit of the present invention, a plurality of thermoelectric elements can be mounted using simple steps and a small number of components. (4) Since the method of manufacturing a thermoelectric generator unit of the present invention can be performed with a plurality of substrates connected, mass production of the thermoelectric generator units can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is a process diagram showing an overall process in a first embodiment of a method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 2 is a top view of a first heat transfer plate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 3 is a cross-sectional view of the first heat transfer plate taken along line 3A-3A in FIG. 2 in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 4 is a top view showing the connected lead boards in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 5 is a top view of a lead board in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 6 is a top view showing a state in which a lead substrate is bonded to a first heat transfer plate in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 7 is a cross-sectional view showing a state where the lead substrate is bonded to the first heat transfer plate, taken along line 7A-7A in FIG. 6, in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 8 is a schematic side view of a thermoelectric element in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 9 is a bottom view of the thermoelectric element upper substrate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 10 is a top view of a thermoelectric element lower substrate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

11 is a cross-sectional view of the thermoelectric element taken along line 11A-11A in FIG. 8 in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 12 is a top view showing a state in which a thermoelectric element is bonded to a first heat transfer plate in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

13 is a cross-sectional view showing a state in which a thermoelectric element is bonded to a first heat transfer plate, taken along line 13A-13A in FIG. 12, in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 14 is a top view showing a state where conduction is established between the terminal pattern of the thermoelectric element and the lead pattern of the lead board by wire bonding in the first embodiment of the method for manufacturing a thermoelectric generator unit of the present invention. .

15 is a diagram illustrating a method for manufacturing a thermoelectric generator unit according to a first embodiment of the present invention, in which the terminal pattern of the thermoelectric element and the lead pattern of the lead substrate are connected by wire bonding at line 15A-15A in FIG. It is sectional drawing which shows the state which made it done.

FIG. 16 is a top view of the unit frame in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 17 is a cross-sectional view of the unit frame taken along line 17A-17A in FIG. 16 in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 18 is a top view showing a state in which the unit frame is fixed to the first heat transfer plate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 19 is a cross-sectional view showing a state in which the unit frame is fixed to the first heat transfer plate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 20 is a top view of a second heat transfer plate in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 21 is a top view showing a state in which the second heat transfer plate is fixed to the unit frame in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 22 is a cross-sectional view showing a state where the second heat transfer plate is fixed to the unit frame, taken along line 22A-22A in FIG. 21, in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 23 is a top view showing sizes of components of the thermoelectric generator unit in the first embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 24 is a process chart showing the entire process in the second embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 25 is a cross-sectional view showing a state where the unit frame is fixed to the first heat transfer plate in the second embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 26 is a cross-sectional view showing a state in which a thermoelectric element is bonded to a first heat transfer plate in the second embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 27 is a cross-sectional view showing a state where conduction is established between the terminal pattern of the thermoelectric element and the lead pattern of the lead board by wire bonding in the second embodiment of the method of manufacturing a thermoelectric generator unit of the present invention. .

FIG. 28 is a top view showing a state in which the terminal pattern of the thermoelectric element and the lead pattern of the lead board are electrically connected by wire bonding in the third embodiment of the method of manufacturing a thermoelectric generator unit of the present invention. .

FIG. 29 is a process diagram showing an overall process in the fifth embodiment of the method for manufacturing a thermoelectric generator unit of the present invention.

FIG. 30 is a top view showing a state in which a thermoelectric element is bonded to a first heat transfer plate in a fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 31 is a cross-sectional view showing a state where the thermoelectric element is bonded to the first heat transfer plate, taken along line 31A-31A in FIG. 30, in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 32 is a top view of a lead substrate used in a thermoelectric generator in a fifth embodiment of the method of manufacturing a thermoelectric generator according to the present invention.

FIG. 33 is a top view showing a state in which the terminal pattern of the thermoelectric element and the lead pattern of the lead board are connected by lead bonding in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

34. In the fifth embodiment of the method of manufacturing a thermoelectric generator unit according to the present invention, the terminal pattern of the thermoelectric element and the lead pattern of the lead substrate are connected by lead bonding at line 34A-34A in FIG. It is sectional drawing which shows a state.

FIG. 35 is a top view showing a state in which the unit frame is fixed to the first heat transfer plate in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 36 is a sectional view showing a state in which the unit frame is fixed to the first heat transfer plate in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 37 is a top view showing a state where the second heat transfer plate is fixed to the unit frame, taken along line 37A-37A in FIG. 36, in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

FIG. 38 is a cross-sectional view showing a state where the second heat transfer plate is fixed to the unit frame in the fifth embodiment of the method of manufacturing a thermoelectric generator unit of the present invention.

[Explanation of symbols]

 120 1st heat transfer plate 120a Lead board base part 120b1, 120b2 Lead board guide pin 120d1 to 120d10 Thermoelectric element base part 130 Lead board 130a1 to 130a9 Lead pattern 130b1, 130b2 Guide hole 130t1, 130t2 Output terminal pattern 140 Thermoelectric element 142 Upper thermoelectric Element substrate 142a Conducting pattern 144 Lower thermoelectric element substrate 144a Conducting pattern 144b1, 144b2 Terminal pattern 146 P-type semiconductor 148 N-type semiconductor 150 Wire bonding 160 Unit frame 170 Second heat transfer plate 172 Silicone grease 180 Thermoelectric generation unit 320 First Heat transfer plate 320a Lead board base part 320d Thermoelectric element base part 330 Lead board 330t1, 330t2 Output terminal pattern 340 Thermoelectric element 42 Upper thermoelectric element substrate 344 Lower thermoelectric element substrate 344b1, 344b2 Terminal pattern 350 Wire bonding 360 Unit frame 360e Upper step 520 First heat transfer plate 520a Lead board base part 520b1, 520b2 Lead board guide pin 520d1 to 520d10 Thermoelectric element base part 530 Lead board 530a1 to 530a9 Lead pattern 530t1, 530t2 Output terminal pattern 534 Solder bump 580 Thermal power generation unit

Claims (8)

(57) [Claims] 1. A method of manufacturing a thermoelectric generation unit containing thermoelectric elements, comprising: a lead pattern for arranging a plurality of thermoelectric elements (140) in series; and an output terminal pattern forming an output terminal of the thermoelectric generation unit. Fixing a lead substrate (130) having a first and second thermoelectric element substrates (142, 144) to a first heat transfer plate (120) formed of a heat conductive material. Of the first heat transfer plate (12).
0) and the first thermoelectric element substrate (144) of each of the plurality of thermoelectric elements (140) and the first heat transfer plate (12).
0), and a step between each of the thermoelectric element terminal patterns of the plurality of thermoelectric elements (140) and the lead pattern of the lead substrate (130) corresponding to the thermoelectric element terminal pattern. The plurality of thermoelectric elements (1) are made conductive by wire bonding.
40) wiring in series, attaching a unit frame (160) for protecting the plurality of thermoelectric elements (140) to the first heat transfer plate (120), and forming a heat conductive material. The second heat transfer plate (170) thus attached is attached to the unit frame (160), and the second thermoelectric device substrates (142) of the plurality of thermoelectric devices (140) and the second heat transfer plate (170) And a step of allowing heat to be conducted. 2. A method for manufacturing a thermoelectric generator unit containing thermoelectric elements, comprising: a lead pattern for connecting a plurality of thermoelectric elements (140) in series; and an output terminal pattern forming an output terminal of the thermoelectric generator unit. Fixing a lead substrate (130) having the following characteristics to a first heat transfer plate (120) formed of a heat conductive material; and a unit frame (160) for protecting the plurality of thermoelectric elements (140). ) Is attached to the first heat transfer plate (120), and the plurality of thermoelectric elements (140) having the first and second thermoelectric element substrates (142, 144) are attached to the unit frame (160).
Is fixed to the first heat transfer plate (120) to which the first heat transfer plate (120) of the plurality of thermoelectric devices (140) is attached and the first heat transfer plate (120) is heated. A step of enabling conduction, and conducting by wire bonding between each thermoelectric element terminal pattern of the plurality of thermoelectric elements (140) and a lead pattern of the lead substrate (130) corresponding to the thermoelectric element terminal pattern. The plurality of thermoelectric elements (1
40) connecting a second heat transfer plate (170) made of a heat conductive material to the unit frame (160), and connecting a second heat transfer plate (170) of each of the plurality of thermoelectric elements (140). Making the thermoelectric element substrate (142) and the second heat transfer plate (170) thermally conductive. 3. A method of manufacturing a thermoelectric generation unit containing thermoelectric elements, wherein a lead substrate (330) having an output terminal pattern constituting an output terminal of the thermoelectric generation unit is formed of a material that can conduct heat. Fixing the thermoelectric element (140) having the first and second thermoelectric element substrates (142, 144) to the first heat transfer plate (320); The first thermoelectric element substrate (14) of the thermoelectric element (140)
4) making the first heat transfer plate (320) thermally conductive; a thermoelectric element terminal pattern of the thermoelectric element (140); and the lead board (3) corresponding to the thermoelectric element terminal pattern.
30) connecting the output terminal pattern with the output terminal pattern by wire bonding; attaching a unit frame (160) for protecting the thermoelectric element (140) to the first heat transfer plate (320); A second heat transfer plate (170) made of a conductive material is attached to the unit frame (160), and a thermoelectric element (14) is attached.
0) making the second thermoelectric element substrate (142) and the second heat transfer plate (170) thermally conductive. 4. A method for manufacturing a thermoelectric generator unit accommodating a thermoelectric element, wherein a lead substrate (330) having an output terminal pattern constituting an output terminal of the thermoelectric generator unit is formed of a heat conductive material. A step of fixing to the first heat transfer plate (320), and a unit frame (16) for protecting the thermoelectric element (140).
0) to the first heat transfer plate (320), and a plurality of thermoelectric elements (140) having first and second thermoelectric element substrates (142, 144) are attached to a unit frame (160).
Is fixed to the first heat transfer plate (320) to which the first heat transfer plate (320) is attached, and the first heat transfer plate (520) of each of the plurality of thermoelectric devices (140) is thermally connected to the first heat transfer plate (520). A step of enabling conduction; a thermoelectric element terminal pattern of the thermoelectric element (140); and the lead substrate (3) corresponding to the thermoelectric element terminal pattern.
30) connecting the output terminal pattern with the output terminal pattern by wire bonding; attaching a second heat transfer plate (170) made of a heat conductive material to the unit frame (160),
0) a step of allowing the second thermoelectric element substrate (142) and the second heat transfer plate (170) to conduct heat. 5. A method for manufacturing a thermoelectric generator unit containing thermoelectric elements, comprising: a material capable of thermally conducting a plurality of thermoelectric elements (140) having first and second thermoelectric element substrates (142, 144). The first thermoelectric element substrate (14) is fixed to the first heat transfer plate (520) formed by
4) making the first heat transfer plate (520) thermally conductive, a lead pattern for connecting a plurality of thermoelectric elements (140) in series, and an output forming an output terminal of the thermoelectric generator unit. A lead pattern of a lead substrate (530) having a terminal pattern is fixed to the respective thermoelectric element terminal patterns of the plurality of thermoelectric elements (140) in a conductive manner, and the plurality of thermoelectric elements (140) are wired in series. Performing a step of attaching a unit frame (160) for protecting the plurality of thermoelectric elements (140) to the first heat transfer plate (520); and a second heat transfer formed of a heat conductive material. A plate (170) is attached to the unit frame (160) to enable heat conduction between the second thermoelectric element substrates (142) of the plurality of thermoelectric elements (140) and the second heat transfer plate (170). Process The method of heat generation unit, which comprises a. 6. Prior to the step of attaching the second heat transfer plate (170) to the unit frame (160), heat conduction between the second heat transfer plate (170) and the second thermoelectric element substrate (142) is performed. The method for manufacturing a thermoelectric generator unit according to any one of claims 1 to 5, further comprising applying a grease (172) to enable the grease. 7. A method for manufacturing a thermoelectric generator unit containing thermoelectric elements, comprising: serially wiring a plurality of thermoelectric elements (140) having first and second thermoelectric element substrates (142, 144). A first heat transfer plate (120) and a second heat transfer plate (170) formed of a heat conductive material to protect the plurality of wired thermoelectric elements (140); Board (12
0) and a step of arranging a second heat transfer plate (170), wherein the first thermoelectric element substrate (144) of each of the plurality of thermoelectric elements (140) is thermally connected to the first heat transfer plate (120). The second thermoelectric element substrate (142) of each of the plurality of thermoelectric elements (140) is capable of conducting heat with the second heat transfer plate (170). Manufacturing method of thermoelectric generator unit. 8. The step of disposing the first heat transfer plate (120) and the second heat transfer plate (170) includes providing a unit frame (160) for protecting the plurality of thermoelectric elements (140). The method for manufacturing a thermoelectric generator unit according to claim 7, comprising: