JP2008124388A - Thermoelectric conversion device and method for manufacturing the same - Google Patents

Thermoelectric conversion device and method for manufacturing the same Download PDF

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JP2008124388A
JP2008124388A JP2006309273A JP2006309273A JP2008124388A JP 2008124388 A JP2008124388 A JP 2008124388A JP 2006309273 A JP2006309273 A JP 2006309273A JP 2006309273 A JP2006309273 A JP 2006309273A JP 2008124388 A JP2008124388 A JP 2008124388A
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thermocouple
conversion device
thermoelectric conversion
sheet
members
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Kinji Muraki
均至 村木
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermoelectric conversion device for simplifying manufacture working, and for increasing the reliability of mechanical/electric connection in a thermo-couple. <P>SOLUTION: This thermoelectric conversion device is provided with: a plurality of thermo-couple formation members 2, 2, ... and so on arranged in parallel in the thickness direction with predetermined intervals; a plurality of thermo-couple groups 3, 3, ... and so on configured of a plurality of serially connected thermo-couples 5, 5, ... and so on; and conductive adhesive 8B, 8B, ... and so on serially connecting the plurality of thermo-couple groups 3, 3, ... and so on of the plurality of thermo-couple formation members 2, 2, ... and so on. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、熱電変換デバイス及びその製造方法に関し、特に温接点と冷接点との温度差によって発電する熱電変換デバイス及びその製造方法に関する。   The present invention relates to a thermoelectric conversion device and a method for manufacturing the thermoelectric conversion device, and more particularly, to a thermoelectric conversion device that generates power by a temperature difference between a hot junction and a cold junction and a method for manufacturing the thermoelectric conversion device.

従来の熱電変換デバイスとして、第1熱電対エレメントとしての第1金属線(例えば銅線)と第2熱電対エレメントとしての第2金属線(例えばニッケル線)とを接続してなる複数の熱電対を有するものがある(特許文献1)。   As a conventional thermoelectric conversion device, a plurality of thermocouples formed by connecting a first metal wire (for example, a copper wire) as a first thermocouple element and a second metal wire (for example, a nickel wire) as a second thermocouple element (Patent Document 1).

この熱電変換デバイスは、可撓性を有する電気絶縁性シートと、この電気絶縁性シートの一方側の面に形成された熱電対群と、この熱電対群を覆うようにして電気絶縁性シートにその両方側の面からそれぞれ固定された1対の形状維持シートとを備えている。   The thermoelectric conversion device includes a flexible electrically insulating sheet, a thermocouple group formed on one surface of the electrically insulating sheet, and an electrically insulating sheet so as to cover the thermocouple group. And a pair of shape maintaining sheets fixed from both sides.

電気絶縁性シートは、平面矩形状のプラスチックシートをそのシート長辺が波打つように折り曲げることにより、全体が断面波形状に形成されている。電気絶縁性シートには、シート長辺に沿って延びる複数のスリットが形成されている。複数のスリットは、熱電対群が形成されていない領域に配置されている。熱電対群は、第1金属線と第2金属線からなる複数の熱電対を電気絶縁性シートの一方側の面上で直列に接続することにより形成されている。1対の形状維持シートは、可撓性及び伸縮性を有する平面矩形状の電気絶縁性材料によって形成されている。   The electrically insulating sheet is formed into a corrugated cross-section as a whole by bending a flat rectangular plastic sheet so that the long side of the sheet undulates. The electrical insulating sheet is formed with a plurality of slits extending along the long side of the sheet. The plurality of slits are arranged in a region where the thermocouple group is not formed. The thermocouple group is formed by connecting a plurality of thermocouples composed of a first metal wire and a second metal wire in series on one surface of the electrically insulating sheet. The pair of shape maintaining sheets is formed of a planar rectangular electrically insulating material having flexibility and stretchability.

以上の構成において、複数の熱電対の第1及び第2金属線の接点部における加熱及び加冷に基づいて発電が行われる。   In the above configuration, power generation is performed based on heating and cooling at the contact portions of the first and second metal wires of the plurality of thermocouples.

一方、電気絶縁性シートの全体をそのシート長辺が波打つように断面波形状に形成しているため、電気絶縁性シートのシート長辺が湾曲するように熱電変換デバイスに外力が作用すると、熱電変換デバイスが外力の作用方向に撓む。また、電気絶縁性シートのシート長辺に沿って延びる複数のスリットを形成しているため、電気絶縁性シートのシート短辺が湾曲するように熱電変換デバイスに外力が作用すると、複数のスリットが電気絶縁性シートのシート短辺の方向に広がり、熱電変換デバイスが外力の作用方向に撓む。これにより、熱電変換デバイスを様々な方向に撓ますことが可能となる。
特開2005−328000号公報
On the other hand, since the entire electrical insulating sheet is formed in a corrugated shape so that the sheet long side undulates, if an external force acts on the thermoelectric conversion device so that the sheet long side of the electrical insulating sheet is curved, The conversion device bends in the direction of the external force. In addition, since a plurality of slits extending along the long side of the electrical insulating sheet are formed, when an external force acts on the thermoelectric conversion device so that the short side of the electrical insulating sheet is curved, the plurality of slits are formed. It spreads in the direction of the sheet short side of the electrically insulating sheet, and the thermoelectric conversion device bends in the direction in which the external force acts. Thereby, it becomes possible to bend the thermoelectric conversion device in various directions.
JP 2005-328000 A

しかし、特許文献1の熱電変換デバイスによると、熱電対の高密度化を図るために電気絶縁性シートを断面波形状に加工する必要が生じ、製造加工を面倒なものにするという問題があった。   However, according to the thermoelectric conversion device of Patent Document 1, it is necessary to process the electrical insulating sheet into a cross-sectional wave shape in order to increase the density of the thermocouple, and there is a problem that the manufacturing process becomes troublesome. .

また、特許文献1の熱電変換デバイスによると、複数の熱電対の接点部が電気絶縁性シートの折曲部近傍に形成されているため、電気絶縁性シートの折り曲げ(波形加工)時に電気絶縁性シート上における複数の熱電対の接点部に曲げ応力が作用し、熱電対における機械的・電気的接続の信頼性が低下するという問題もあった。   Moreover, according to the thermoelectric conversion device of Patent Document 1, since the contact portions of a plurality of thermocouples are formed in the vicinity of the bent portion of the electrical insulating sheet, the electrical insulating property is obtained when the electrical insulating sheet is bent (waveform processing). There is also a problem in that bending stress acts on the contact portions of a plurality of thermocouples on the sheet, and the reliability of mechanical and electrical connection in the thermocouple is lowered.

従って、本発明の目的は、製造加工の簡素化を図ることができるとともに、熱電対における機械的・電気的接続の信頼性を高めることができる熱電変換デバイス及びその製造方法を提供することにある。   Accordingly, an object of the present invention is to provide a thermoelectric conversion device capable of simplifying the manufacturing process and improving the reliability of mechanical and electrical connection in a thermocouple, and a method for manufacturing the thermoelectric conversion device. .

(1)本発明は、上記目的を達成するために、所定の間隔をもって厚さ方向に並列する複数のシート状部材と、前記複数のシート状部材にそれぞれ形成され、直列に接続された複数の熱電対よりなる複数の熱電対群と、前記複数のシート状部材の複数の熱電対群を直列に接続する接続部材とを備えたことを特徴とする熱電変換デバイスを提供する。 (1) In order to achieve the above object, the present invention provides a plurality of sheet-like members arranged in parallel in the thickness direction at a predetermined interval, and a plurality of sheet-like members respectively formed and connected in series. There is provided a thermoelectric conversion device comprising a plurality of thermocouple groups made of thermocouples and a connection member for connecting a plurality of thermocouple groups of the plurality of sheet-like members in series.

(2)本発明は、上記目的を達成するために、所定の面積を有するシートに複数の熱電対が直列に接続してなる複数の熱電対群を形成する第1ステップと、前記シートを前記複数の熱電対群毎に分割して複数のシート状部材を形成する第2ステップと、前記複数のシート状部材を所定の間隔をもって厚さ方向に並列に配置する第3ステップと、前記複数のシート状部材の前記複数の熱電対群を直列に接続する第4ステップとを備えたことを特徴とする熱電変換デバイスの製造方法を提供する。 (2) In order to achieve the above object, the present invention provides a first step of forming a plurality of thermocouple groups in which a plurality of thermocouples are connected in series to a sheet having a predetermined area; A second step of forming a plurality of sheet-like members by dividing each of the plurality of thermocouple groups; a third step of arranging the plurality of sheet-like members in parallel in a thickness direction at a predetermined interval; And a fourth step of connecting the plurality of thermocouple groups of the sheet-like member in series. A method of manufacturing a thermoelectric conversion device is provided.

本発明によると、
従って、本発明の目的は、製造加工の簡素化を図ることができるとともに、熱電対における機械的・電気的接続の信頼性を高めることができる。
According to the present invention,
Therefore, the object of the present invention is to simplify the manufacturing process and improve the reliability of the mechanical and electrical connection in the thermocouple.

[実施の形態]
図1は、本発明の実施の形態に係る熱電変換デバイスを説明するために示す斜視図である。図2は、本発明の実施の形態に係る熱電変換デバイスを説明するために示す平面図である。
[Embodiment]
FIG. 1 is a perspective view for explaining a thermoelectric conversion device according to an embodiment of the present invention. FIG. 2 is a plan view for explaining the thermoelectric conversion device according to the embodiment of the present invention.

(熱電変換デバイスの全体構成)
図1及び図2において、符号1で示す熱電変換デバイスは、柔軟性材料からなる熱電対形成用部材2,2,…と、熱電対形成用部材2,2,…上で温接点と冷接点との間に温度差を与えることにより発電する熱電対群3,3…と、熱電対形成用部材2,2,…と同様に柔軟性材料からなるパッケージ部材4とから大略構成されている。なお、熱電変換デバイス1においては、熱電対群3,3,…に通電することにより発熱・吸熱作用を得ることができる。
(Overall configuration of thermoelectric conversion device)
1 and 2, the thermoelectric conversion device denoted by reference numeral 1 includes thermocouple forming members 2, 2,... Made of a flexible material, and hot and cold junctions on the thermocouple forming members 2, 2,. .., And a package member 4 made of a flexible material in the same manner as the thermocouple forming members 2, 2... In the thermoelectric conversion device 1, heat generation and heat absorption can be obtained by energizing the thermocouple groups 3, 3,.

(熱電対形成用部材2,2,…の構成)
熱電対形成用部材2,2,…は、図1に示すように、所定の間隔(0.3〜0.5mm)をもって厚さ方向に並列して配置され、全体が例えばポリイミド樹脂からなる平面略矩形状の絶縁プラスチックシートによって形成されている。熱電対形成用部材2,2,…のうち互いに隣り合う2つの熱電対形成用部材2,2は、その表面と裏面とが互いに対向する位置に配置されている。これら2つの熱電対形成用部材2,2のうち一方の熱電対形成用部材2の一方側(前方)端縁及び他方の熱電対形成用部材2の他方側(後方)端縁にはスルーホール8A,8Aがそれぞれ形成されている。また、熱電対形成用部材2,2,…のうち互いに隣り合う2つの熱電対形成用部材2,2間には、前方部のスルーホール8A及び後方部のスルーホール8Aにそれぞれ接続する接続部材としての導電性接着剤8B,8Bが介在して配置されている。熱電対形成用部材2,2,…のうち両端部の熱電対形成用部材2,2における一方側(後方)端縁には、パッケージ部材4の外部に露出する突出片2C,2Cが一体に形成されている。熱電対形成用部材2,2,…の平面寸法は、例えば縦寸法が3〜5mm程度の寸法に、また横寸法が70〜100mm程度の寸法にそれぞれ設定されている。熱電対形成用部材2,2,…の厚さは、例えば12〜125μm程度の寸法に設定されている。
(Configuration of thermocouple forming members 2, 2,...)
As shown in FIG. 1, the thermocouple forming members 2, 2,... Are arranged in parallel in the thickness direction with a predetermined interval (0.3 to 0.5 mm), and the entire surface is made of, for example, a polyimide resin. It is formed of a substantially rectangular insulating plastic sheet. The two thermocouple forming members 2 and 2 adjacent to each other among the thermocouple forming members 2, 2,... Are arranged at positions where the front and back surfaces thereof face each other. Through holes are formed in one of the two thermocouple forming members 2, 2 on one side (front) edge of the thermocouple forming member 2 and on the other side (rear) edge of the other thermocouple forming member 2. 8A and 8A are formed, respectively. In addition, between the two thermocouple forming members 2 and 2 adjacent to each other among the thermocouple forming members 2, 2,..., Connecting members respectively connected to the front through hole 8 </ b> A and the rear through hole 8 </ b> A. Conductive adhesives 8B and 8B are interposed and arranged. Projection pieces 2C and 2C exposed to the outside of the package member 4 are integrally formed on one end (rear) edge of the thermocouple forming members 2 and 2 at both ends of the thermocouple forming members 2 and 2. Is formed. The planar dimensions of the thermocouple-forming members 2, 2,... Are set to, for example, a vertical dimension of about 3 to 5 mm and a horizontal dimension of about 70 to 100 mm. The thickness of the thermocouple forming members 2, 2,... Is set to about 12 to 125 μm, for example.

突出片2C,2Cには、外部に出力する銅(Cu)等の端子パターン9,9が熱電対形成用部材2,2,…のうち両端部の熱電対形成用部材2,2に跨ってそれぞれ形成されている。   On the projecting pieces 2C, 2C, terminal patterns 9, 9 such as copper (Cu) output to the outside straddle the thermocouple forming members 2, 2 at both ends of the thermocouple forming members 2, 2,. Each is formed.

(熱電対群3,3,…の構成)
熱電対群3,3,…は、図1に示すように、それぞれが複数(合計が例えば10000個)の熱電対5,5,…からなり、熱電対形成用部材2,2,…に形成(配置)されている。熱電対5,5,…は、第1熱電対エレメント5A,5A,…及び第2熱電対エレメント5B,5B,…を有し、温接点としての第1接点部6,6,…及び冷接点としての第2接点部7,7,…によって直列に接続されている。熱電対形成用部材2,2,…のうち互いに隣り合う2つの熱電対形成用部材2,2における複数の熱電対(熱電対群)同士は、Cu(銅)等のスルーホール8A,8A,…及び導電性接着剤8B,8B,…によって接続されている。熱電対5,5,…のうち最端部の熱電対5,5は、端子パターン9,9にそれぞれ接続されている。
(Configuration of thermocouple groups 3, 3, ...)
As shown in FIG. 1, each of the thermocouple groups 3, 3,... Is composed of a plurality (for example, 10,000 in total) of thermocouples 5, 5,. (Arranged). The thermocouples 5, 5, ... have first thermocouple elements 5A, 5A, ... and second thermocouple elements 5B, 5B, ..., and first contact portions 6, 6, ... as cold junctions and cold junctions. Are connected in series by second contact portions 7, 7,. A plurality of thermocouples (thermocouple groups) in the two thermocouple forming members 2 and 2 adjacent to each other among the thermocouple forming members 2, 2,... Are through holes 8A, 8A, such as Cu (copper). ... and conductive adhesives 8B, 8B, ... are connected. The thermocouples 5 and 5 at the extreme ends of the thermocouples 5, 5,... Are connected to the terminal patterns 9 and 9, respectively.

第1熱電対エレメント5A,5A,…は、図1に示すように、p型熱電半導体からなり、熱電対形成用部材2,2,…一方側の面(表面)にパターン形成されている。第2熱電対エレメント5B,5B,…は、図1に示すように、n型熱電半導体からなり、第1熱電対エレメント5A,5A,…と同様に、熱電対形成用部材2,2,…の表面にパターン形成されている。p型熱電半導体及びn型熱電半導体としては、良好な熱電能(ゼーベック効果)を得るためにBi(ビスマス)Te(テルル)系の半導体材料が用いられる。   As shown in FIG. 1, the first thermocouple elements 5A, 5A,... Are made of p-type thermoelectric semiconductors, and are patterned on one side (surface) of thermocouple forming members 2, 2,. As shown in FIG. 1, the second thermocouple elements 5B, 5B,... Are made of an n-type thermoelectric semiconductor, and, like the first thermocouple elements 5A, 5A,. A pattern is formed on the surface. As the p-type thermoelectric semiconductor and the n-type thermoelectric semiconductor, a Bi (bismuth) Te (tellurium) -based semiconductor material is used in order to obtain good thermoelectric power (Seebeck effect).

(パッケージ部材4の構成)
パッケージ部材4は、図1及び図2に2点鎖線で示すように、例えば直方体からなり、全体が例えばシリコーン樹脂(PDMS:polydimethylsiloxane)等の柔軟性材料によって形成されている。そして、熱電対形成用部材2,2,…及び熱電対群3,3,…を覆うように構成されている。
(Configuration of package member 4)
As shown by a two-dot chain line in FIGS. 1 and 2, the package member 4 is made of, for example, a rectangular parallelepiped, and is entirely formed of a flexible material such as, for example, silicone resin (PDMS: polydimethylsiloxane). The thermocouple forming members 2, 2,... And the thermocouple groups 3, 3,.

(熱電変換デバイス1の動作)
熱電変換デバイス1の第1接点部側を高温度(例えば車両用ボンネットの廃熱)雰囲気中に配置するとともに、その第2接点部側を低温度雰囲気(例えば大気)中に配置すると、熱電対5,5,…の第1接点部6,6,…と第2接点部7,7,…との間に温度差(10℃程度)が生じる。このため、熱電対5,5,…のうち最端部の熱電対5,5にそれぞれ接続する端子パターン9,9間に電圧(4〜6V程度)が生じる。
(Operation of thermoelectric conversion device 1)
When the first contact part side of the thermoelectric conversion device 1 is disposed in a high temperature (for example, waste heat of a vehicle bonnet) atmosphere and the second contact part side is disposed in a low temperature atmosphere (for example, air), a thermocouple A temperature difference (about 10 ° C.) is generated between the first contact portions 5, 6,... 5, and the second contact portions 7, 7,. Therefore, a voltage (about 4 to 6 V) is generated between the terminal patterns 9 and 9 connected to the thermocouples 5 and 5 at the end of the thermocouples 5 and 5.

(熱電変換デバイスの製造方法)
図3〜図7は、本発明の実施の形態に係る熱電変換デバイスの製造方法を説明するために示す図である。図3は、熱電対群の形成工程を説明するために示す平面図である。図3(a)は熱電対群の形成前(端子パターンとスルーホールの形成後)の状態を、図3(b)は熱電対群の形成後の状態をそれぞれ示す。図4は、熱電対形成用部材の形成工程(第1ステップ)を説明するために示す平面図である。図5は、熱電対形成用部材の整列工程(第2ステップ)を説明するために示す斜視図である。図5(a)は吊持部材の載置前の状態を、図5(b)は吊持部材の載置後の状態を、図5(c)は熱電対形成用部材に対する吊持部材の接着前の状態を、図5(d)を熱電対形成用部材に対する吊持部材の接着後の状態を、図5(e)は吊持部材による熱電対形成用部材の整列前の状態を、図5(f)は吊持部材による熱電対形成用部材の整列後の状態をそれぞれ示す。図6は、熱電対群の接続工程(第3ステップ)を説明するために示す斜視図である。図7は、パッケージ部材の形成工程を説明するために示す斜視図である。
(Method for manufacturing thermoelectric conversion device)
3-7 is a figure shown in order to demonstrate the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention. FIG. 3 is a plan view for explaining a process of forming a thermocouple group. FIG. 3A shows a state before the thermocouple group is formed (after the terminal pattern and the through hole are formed), and FIG. 3B shows a state after the thermocouple group is formed. FIG. 4 is a plan view for explaining a thermocouple forming member forming step (first step). FIG. 5 is a perspective view shown for explaining the alignment step (second step) of the thermocouple forming member. 5A shows the state before the suspension member is placed, FIG. 5B shows the state after the suspension member is placed, and FIG. 5C shows the state of the suspension member with respect to the thermocouple forming member. FIG. 5D shows the state before bonding, FIG. 5D shows the state after bonding of the suspension member to the thermocouple forming member, and FIG. 5E shows the state before alignment of the thermocouple formation member by the suspension member. FIG. 5F shows the state after the thermocouple forming members are aligned by the suspension member. FIG. 6 is a perspective view shown for explaining the thermocouple group connection step (third step). FIG. 7 is a perspective view for explaining a package member forming process.

本実施の形態に示す熱電変換デバイスの製造方法は、「熱電対群の形成」,「熱電対形成用部材の形成」,「熱電対形成用部材の整列」,「熱電対群の接続」及び「パッケージ部材の形成」の各工程が順次実施されるため、これら各工程を順次説明する。   The manufacturing method of the thermoelectric conversion device shown in the present embodiment includes “formation of thermocouple group”, “formation of thermocouple formation member”, “alignment of thermocouple formation member”, “connection of thermocouple group” and Since each process of “formation of a package member” is performed sequentially, each process will be described sequentially.

「熱電対群の形成」
先ず、図3(a)に示すように、第1領域部20A及び第2領域部20Bを有し、ポリイミド樹脂からなる柔軟性材料によって予め形成された平面略矩形状(縦100mm,横70〜100mm程度)シートからなる基部材20における所定の部位に端子パターン9,9及びスルーホール8A,8A,…を形成する。端子パターン9,9の形成は、例えばスパッタリング法を用い、基部材20の第1領域部20A及び第2領域部20Bに跨ってCu層を形成した後、このCu層にリソグラフィ法を用いてエッチング処理を施すことにより行われる。スルーホール8Aの形成は、例えば基部材20の第1領域部部20Aに貫通孔を設け、これら貫通孔の内面に銅めっき処理を施すことにより行われる。
`` Formation of thermocouple group ''
First, as shown to Fig.3 (a), it has the 1st area | region part 20A and the 2nd area | region part 20B, and the planar substantially rectangular shape (length 100mm, width 70-) previously formed with the flexible material which consists of a polyimide resin. Terminal patterns 9 and 9 and through-holes 8A, 8A,... Are formed in predetermined portions of the base member 20 made of a sheet. The terminal patterns 9 and 9 are formed by using, for example, a sputtering method, forming a Cu layer across the first region 20A and the second region 20B of the base member 20, and then etching the Cu layer using a lithography method. This is done by applying processing. The through holes 8A are formed, for example, by providing through holes in the first region 20A of the base member 20 and performing copper plating on the inner surfaces of these through holes.

次に、図3(b)に示すように、基部材20の第1領域部20A(図3(a)に示す)の一方側の面(表面)であって、その単一の方向に沿って区分された複数の熱電対形成領域部20a,20a,…に第1熱電対エレメント5A,5A,…及び複数の第2熱電対エレメント5B,5B,…のうち互いに対応する第1熱電対エレメント5Aと第2熱電対エレメント5Bとを有する複数の熱電対5,5,…を長手(横)方向に沿って互いに直列に接続して形成する。この場合、複数の熱電対形成領域部20a,20a,…にそれぞれ複数の熱電対5,5,…が直列に接続して形成されると、複数の熱電対群3,3,…が形成される。第1熱電対エレメント5A,5A,…の形成は、例えば熱電対形成領域部20a,20a,…にスパッタリング法を用いて厚さ4〜5μm程度,幅300μm程度のp型半導体層を形成した後、このp型熱電半導体層にリソグラフィ法を用いてエッチング処理を施すことにより行われる。また、第2熱電対エレメント5B,5B,…の形成は、第1熱電対エレメント5A,5A,…を形成する場合と同様に、熱電対形成領域部20a,20a,…にスパッタリング法を用いて厚さ4〜5μm程度,幅300μmのn型半導体層を形成した後、このn型熱電半導体層にリソグラフィ法を用いてエッチング処理を施すことにより行われる。   Next, as shown in FIG. 3 (b), it is a surface (front surface) on one side of the first region 20A (shown in FIG. 3 (a)) of the base member 20, and along its single direction. The first thermocouple elements corresponding to each other among the first thermocouple elements 5A, 5A,... And the plurality of second thermocouple elements 5B, 5B,. A plurality of thermocouples 5, 5... Each having 5A and a second thermocouple element 5B are connected in series along the longitudinal (lateral) direction. In this case, when a plurality of thermocouples 5, 5,... Are formed in series with the plurality of thermocouple formation region portions 20a, 20a,..., A plurality of thermocouple groups 3, 3,. The The first thermocouple elements 5A, 5A,... Are formed after, for example, a p-type semiconductor layer having a thickness of about 4-5 μm and a width of about 300 μm is formed on the thermocouple formation region portions 20a, 20a,. The p-type thermoelectric semiconductor layer is etched by using a lithography method. Further, the formation of the second thermocouple elements 5B, 5B,... Is performed on the thermocouple forming region portions 20a, 20a,... Using the sputtering method, as in the case of forming the first thermocouple elements 5A, 5A,. After an n-type semiconductor layer having a thickness of about 4 to 5 μm and a width of 300 μm is formed, the n-type thermoelectric semiconductor layer is etched using a lithography method.

「熱電対形成用部材の形成」
図4に示すように、レーザ装置(図示せず)を用い、複数の熱電対形成領域部20a,20a,…のうち互いに隣り合う2つの熱電対形成領域部20a,20a間の境界線b(図3(b)に示す)に沿って基部材20を分割(切断)することにより、複数の熱電対形成用部材2,2,…(最端部の熱電対形成用部材2,2は突出片2C,2Cを有する)を形成する。
“Formation of thermocouple forming members”
As shown in FIG. 4, using a laser device (not shown), a boundary line b (between two thermocouple forming region portions 20a, 20a adjacent to each other among a plurality of thermocouple forming region portions 20a, 20a,. By dividing (cutting) the base member 20 along (shown in FIG. 3 (b)), a plurality of thermocouple forming members 2, 2,... 2C and 2C).

「熱電対形成用部材の整列」
先ず、図5(a)に示すように、熱電対形成用部材2,2,…を所定の間隔をもって厚さ方向に整列する整列部100A,100A,…、これら整列部100A,100A,…の整列方向に延在する第1載置面100Bと第2載置面100C、及びこれら第1載置面100Bと第2載置面100Cに開口して接着剤200(後述)を導入する導入孔100D,100D,…を有する整列台100を用意する。次いで、図5(b)に示すように、整列台100の第1載置面100B,100B,…及び第2載置面100C,100Cに吊持部材としてのワイヤ300,300をそれぞれ載置する。
"Alignment of thermocouple forming members"
First, as shown in FIG. 5A, the thermocouple forming members 2, 2,... Are aligned in the thickness direction at a predetermined interval, and the alignment portions 100A, 100A,. The first mounting surface 100B and the second mounting surface 100C extending in the alignment direction, and the introduction holes for opening the first mounting surface 100B and the second mounting surface 100C to introduce the adhesive 200 (described later). An alignment table 100 having 100D, 100D,. Next, as shown in FIG. 5B, wires 300 and 300 as suspension members are placed on the first placement surfaces 100B, 100B,... And the second placement surfaces 100C and 100C of the alignment table 100, respectively. .

しかる後、図5(c)に示すようにワイヤ300,300を覆うようにして整列台100の整列部100A,100A,…上に熱電対形成用部材2,2,…を載置して整列し、図5(d)に示すように整列台100の導入孔100D,100D,…(図5(a),(b)に示す)から第1載置面100B,100B,…と第2載置面100C,100Cに接着剤200を導入して熱電対形成用部材2,2,…にワイヤ300,300を接着する。そして、図5(e)に示すようにワイヤ300,300,…を接着したまま整列台100を取り除き、図5(f)に示すようにワイヤ300,300及び熱電対形成用部材2,2,…を上下反転させる。この場合、ワイヤ300,300及び熱電対形成用部材2,2,…が反転すると、熱電対形成用部材2,2,…に重力が作用するため、熱電対形成用部材2,2,…が所定の間隔をもって厚さ方向に整列した状態でワイヤ300,300に吊持される。   After that, as shown in FIG. 5C, the thermocouple forming members 2, 2,... Are placed on the alignment portions 100A, 100A,. As shown in FIG. 5D, the first mounting surfaces 100B, 100B,... And the second mounting surface 100D, 100D,. An adhesive 200 is introduced into the mounting surfaces 100C and 100C, and the wires 300 and 300 are bonded to the thermocouple forming members 2, 2,. Then, as shown in FIG. 5 (e), the alignment table 100 is removed with the wires 300, 300,... Bonded, and the wires 300, 300 and the thermocouple forming members 2, 2, as shown in FIG. Flip… upside down. In this case, when the wires 300, 300 and the thermocouple forming members 2, 2,... Are reversed, gravity acts on the thermocouple forming members 2, 2,. The wires 300 and 300 are suspended in a state of being aligned in the thickness direction at a predetermined interval.

「熱電対群の接続」
図6に示すように、熱電対形成用部材2,2,…を厚さ方向に整列した状態を保持しながら、熱電対形成用部材2,2,…のうち互いに隣り合う2つの熱電対形成用部材2,2間に導電性接着剤8B,8B,…を介在させ、これら2つの熱電対形成用部材2,2における熱電対同士を導電性接着剤8B,8B,…によって接続する。この場合、導電性接着剤8B,8B,…によって熱電対同士が接続されると、複数の熱電対5,5,…を直列に接続してなる複数の熱電対群3,3,…が形成される。
"Connection of thermocouple group"
As shown in FIG. 6, two thermocouples adjacent to each other among the thermocouple forming members 2, 2,... Are formed while maintaining the thermocouple forming members 2, 2,. The conductive adhesives 8B, 8B,... Are interposed between the members 2 and 2, and the thermocouples in these two thermocouple forming members 2, 2 are connected by the conductive adhesives 8B, 8B,. In this case, when the thermocouples are connected by the conductive adhesives 8B, 8B,..., A plurality of thermocouple groups 3, 3,. Is done.

「パッケージ部材の形成」
図7に示すように、熱電対群3,3,…が形成された熱電対形成用部材2,2,…を成形用型600内に収容する。この際、熱電対形成用部材2,2の突出片2C,2Cを成形用型600のスリット600A,600Aから成形用型600外に露出させ、熱電対形成用部材2,2,…を整列溝600B,600B,…内に挿入して厚さ方向に整列する。次に、成形用型600内に樹脂注入孔600Cからシリコーン樹脂液を注入した後、この注入したシリコーン樹脂液を加熱して固化することによりパッケージ部材4(図1に示す)を形成する。この場合、熱電対群3,3,…及び熱電対形成用部材2,2,…が端子パターン9,9及び突出片2C,2Cの一部を除きパッケージ部材4によって覆われる。そして、パッケージ部材4によって覆われた熱電対群3,3,…及び熱電対形成用部材2,2,…を押し出しピン(図示せず)等によって成形用型600外に取り出すとともに、ワイヤ300,300を熱電対形成用部材2,2,…から取り外す。
このようにして、熱電変換デバイス1を製造することができる。
"Formation of package members"
As shown in FIG. 7, thermocouple forming members 2, 2,... Formed with thermocouple groups 3, 3,. At this time, the protruding pieces 2C, 2C of the thermocouple forming members 2, 2 are exposed to the outside of the forming die 600 through the slits 600A, 600A of the forming die 600, and the thermocouple forming members 2, 2,. Inserted in 600B, 600B,... And aligned in the thickness direction. Next, after injecting the silicone resin liquid into the molding die 600 from the resin injection hole 600C, the injected silicone resin liquid is heated and solidified to form the package member 4 (shown in FIG. 1). In this case, the thermocouple groups 3, 3,... And the thermocouple forming members 2, 2,... Are covered by the package member 4 except for part of the terminal patterns 9, 9 and the protruding pieces 2C, 2C. The thermocouple groups 3, 3,... And the thermocouple forming members 2, 2,... Covered by the package member 4 are taken out of the molding die 600 by push pins (not shown), and the wires 300, 300 is removed from the thermocouple forming members 2, 2,.
In this way, the thermoelectric conversion device 1 can be manufactured.

[実施の形態の効果]
以上説明した実施の形態によれば、次に示す効果が得られる。
[Effect of the embodiment]
According to the embodiment described above, the following effects can be obtained.

(1)熱電対の高密度化を図るために、所定の間隔をもって厚さ方向に並列する複数の熱電対形成用部材2,2,…、及びこれら複数の熱電対形成用部材2,2,…にそれぞれ形成された熱電対群3,3,…を有する熱電変換デバイス1を得ることができる。これにより、熱電対の高密度化を図るために従来必要とした電気絶縁性シートの波形状加工が不要となり、製造加工の簡素化を図ることができる。 (1) In order to increase the density of the thermocouples, a plurality of thermocouple forming members 2, 2,..., And a plurality of thermocouple forming members 2, 2,. The thermoelectric conversion device 1 having the thermocouple groups 3, 3,. This eliminates the need for corrugated processing of an electrically insulating sheet, which is conventionally required to increase the density of thermocouples, and simplifies manufacturing processing.

(2)第1接点部6,6,…が熱電対形成用部材2,2,…の一方側(上方)端縁に、また第2接点部7,7,…が熱電対形成用部材2,2,…の他方側(下方)端縁にそれぞれ配置されている(熱電変換デバイス1に折曲部が無い構造である)ため、熱電変換デバイス1の製造時に熱電対5,5,…(第1接点部6,6,…及び第2接点部7,7,…)に対して曲げ応力が発生せず、熱電対5,5,…における機械的・電気的接続の信頼性を高めることができる。 (2) The first contact portions 6, 6,... Are on one side (upper) edge of the thermocouple forming members 2, 2,..., And the second contact portions 7, 7,. , 2,... (The thermoelectric conversion device 1 has no bent portion), so that when the thermoelectric conversion device 1 is manufactured, the thermocouples 5, 5,. No bending stress is generated on the first contact portions 6, 6,... And the second contact portions 7, 7,..., And the reliability of the mechanical and electrical connections in the thermocouples 5, 5,. Can do.

以上、本発明の熱電変換デバイス(熱電変換デバイスの製造方法)を上記の実施の形態に基づいて説明したが、本発明は上記の実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々の態様において実施することが可能であり、例えば次に示すような変形も可能である。   As mentioned above, although the thermoelectric conversion device (manufacturing method of a thermoelectric conversion device) of this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment, and does not deviate from the summary. The present invention can be implemented in various modes within the scope, and for example, the following modifications are possible.

本実施の形態では、第1熱電対エレメント5A,5A,…及び第2熱電対エレメント5B,5B,…の材料としてBiTe系の半導体材料が用いられる場合について説明したが、本発明はこれに限定されず、Pb(鉛)Te(テルル)系,Fe(鉄)Si(シリコン)系あるいはPb(鉛)Sn(錫)Te(テルル)系等の半導体材料を用いることができる。また、熱電対5,5,…Bとしては、半導体材料以外に、例えばCu(銅)とNi(ニッケル),Cu(銅)とBi(ビスマス)又はFe(鉄)とNi(ニッケル)など2種の金属材料を用いてもよい。   In the present embodiment, the case where a BiTe-based semiconductor material is used as the material of the first thermocouple elements 5A, 5A,... And the second thermocouple elements 5B, 5B,. Alternatively, a semiconductor material such as Pb (lead) Te (tellurium), Fe (iron) Si (silicon), or Pb (lead) Sn (tin) Te (tellurium) can be used. In addition to the semiconductor material, the thermocouples 5, 5,... B are, for example, Cu (copper) and Ni (nickel), Cu (copper) and Bi (bismuth) or Fe (iron) and Ni (nickel) 2 A seed metal material may be used.

本発明の実施の形態に係る熱電変換デバイスを説明するために示す斜視図。The perspective view shown in order to demonstrate the thermoelectric conversion device which concerns on embodiment of this invention. 本発明の実施の形態に係る熱電変換デバイスを説明するために示す平面図。The top view shown in order to demonstrate the thermoelectric conversion device which concerns on embodiment of this invention. (a)及び(b)は、本発明の実施の形態に係る熱電変換デバイスの製造方法における熱電対群の形成工程を説明するために示す平面図。(A) And (b) is a top view shown in order to demonstrate the formation process of the thermocouple group in the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention. 本発明の実施の形態に係る熱電変換デバイスの製造方法における熱電対形成用部材の形成工程を説明するために示す平面図。The top view shown in order to demonstrate the formation process of the member for thermocouple formation in the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention. (a)〜(f)は、本発明の実施の形態に係る熱電変換デバイスの製造方法における熱電対形成用部材の整列工程を説明するために示す斜視図。(A)-(f) is a perspective view shown in order to demonstrate the alignment process of the member for thermocouple formation in the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention. 本発明の実施の形態に係る熱電変換デバイスの製造方法における熱電対群の接続工程を説明するために示す斜視図。The perspective view shown in order to demonstrate the connection process of the thermocouple group in the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention. 本発明の実施の形態に係る熱電変換デバイスの製造方法におけるパッケージ部材の形成工程を説明するために示す斜視図。The perspective view shown in order to demonstrate the formation process of the package member in the manufacturing method of the thermoelectric conversion device which concerns on embodiment of this invention.

符号の説明Explanation of symbols

1…熱電変換デバイス、2…熱電対形成用部材、3…熱電対群、4…パッケージ部材、5…熱電対、5A…第1熱電対エレメント、5B…第2熱電対エレメント、6…第1接点部、7…第2接点部、8A…スルーホール、8B…導電性接着剤、9…導電性接着剤、20…基部材、20A…第1領域部、20a…熱電対形成領域部、20B…第2領域部、100…整列台、100A…整列部、100B…第1載置面、100C…第2載置面、100D…導入孔、200…接着剤、300…ワイヤ、600…成形用型、600A…スリット、600B…整列溝、600C…樹脂注入孔、b…境界線 DESCRIPTION OF SYMBOLS 1 ... Thermoelectric conversion device, 2 ... Thermocouple formation member, 3 ... Thermocouple group, 4 ... Package member, 5 ... Thermocouple, 5A ... 1st thermocouple element, 5B ... 2nd thermocouple element, 6 ... 1st Contact part, 7 ... second contact part, 8A ... through hole, 8B ... conductive adhesive, 9 ... conductive adhesive, 20 ... base member, 20A ... first area part, 20a ... thermocouple forming area part, 20B ... 2nd area | region part, 100 ... Alignment stand, 100A ... Alignment part, 100B ... 1st mounting surface, 100C ... 2nd mounting surface, 100D ... Introduction hole, 200 ... Adhesive agent, 300 ... Wire, 600 ... For shaping | molding Mold, 600A ... Slit, 600B ... Alignment groove, 600C ... Resin injection hole, b ... Boundary line

Claims (6)

所定の間隔をもって厚さ方向に並列する複数のシート状部材と、
前記複数のシート状部材にそれぞれ形成され、直列に接続された複数の熱電対よりなる複数の熱電対群と、
前記複数のシート状部材の複数の熱電対群を直列に接続する接続部材と
を備えたことを特徴とする熱電変換デバイス。
A plurality of sheet-like members arranged in parallel in the thickness direction at a predetermined interval;
A plurality of thermocouple groups each formed of a plurality of thermocouples formed in the plurality of sheet-like members and connected in series;
A thermoelectric conversion device comprising: a connection member that connects a plurality of thermocouple groups of the plurality of sheet-like members in series.
前記複数のシート状部材は、複数のポリイミドフィルムであり、
前記接続部材は、導電性接着剤である請求項1に記載の熱電変換デバイス。
The plurality of sheet-like members are a plurality of polyimide films,
The thermoelectric conversion device according to claim 1, wherein the connection member is a conductive adhesive.
前記複数の熱電対群及び前記複数のシート状部材は、パッケージ部材によって覆われている請求項1に記載の熱電変換デバイス。   The thermoelectric conversion device according to claim 1, wherein the plurality of thermocouple groups and the plurality of sheet-like members are covered with a package member. 所定の面積を有するシートに複数の熱電対が直列に接続してなる複数の熱電対群を形成する第1ステップと、
前記シートを前記複数の熱電対群毎に分割して複数のシート状部材を形成する第2ステップと、
前記複数のシート状部材を所定の間隔をもって厚さ方向に並列に配置する第3ステップと、
前記複数のシート状部材の前記複数の熱電対群を直列に接続する第4ステップと
を備えたことを特徴とする熱電変換デバイス。
A first step of forming a plurality of thermocouple groups in which a plurality of thermocouples are connected in series to a sheet having a predetermined area;
A second step of dividing the sheet into the plurality of thermocouple groups to form a plurality of sheet-like members;
A third step of arranging the plurality of sheet-like members in parallel in the thickness direction at a predetermined interval;
A thermoelectric conversion device comprising: a fourth step of connecting the plurality of thermocouple groups of the plurality of sheet-like members in series.
前記第1ステップにおいて、前記シートの一方側の面に前記複数の熱電対群を形成する請求項4に記載の熱電変換デバイスの製造方法。   The method for manufacturing a thermoelectric conversion device according to claim 4, wherein, in the first step, the plurality of thermocouple groups are formed on one surface of the sheet. 前記第3ステップにおいて、予め吊持部材が載置された整列台上に前記複数のシート状部材を整列し、次に前記複数のシート状部材に前記吊持部材を接着した後、前記吊持部材によって前記複数のシート状部材を吊持する請求項4に記載の熱電変換デバイスの製造方法。   In the third step, the plurality of sheet-like members are aligned on an alignment table on which a suspension member is previously placed, and then the suspension member is bonded to the plurality of sheet-like members, and then the suspension is The method for manufacturing a thermoelectric conversion device according to claim 4, wherein the plurality of sheet-like members are suspended by a member.
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
JP2015228498A (en) * 2014-05-30 2015-12-17 三星電子株式会社Samsung Electronics Co.,Ltd. Stretchable thermoelectric composite and thermoelectric element including the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015228498A (en) * 2014-05-30 2015-12-17 三星電子株式会社Samsung Electronics Co.,Ltd. Stretchable thermoelectric composite and thermoelectric element including the same

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