WO2017154917A1 - 熱電変換モジュール - Google Patents
熱電変換モジュール Download PDFInfo
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- WO2017154917A1 WO2017154917A1 PCT/JP2017/009040 JP2017009040W WO2017154917A1 WO 2017154917 A1 WO2017154917 A1 WO 2017154917A1 JP 2017009040 W JP2017009040 W JP 2017009040W WO 2017154917 A1 WO2017154917 A1 WO 2017154917A1
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- thermoelectric conversion
- electrode
- conversion module
- conversion element
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 177
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/01—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/81—Structural details of the junction
- H10N10/817—Structural details of the junction the junction being non-separable, e.g. being cemented, sintered or soldered
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/82—Connection of interconnections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/851—Thermoelectric active materials comprising inorganic compositions
- H10N10/854—Thermoelectric active materials comprising inorganic compositions comprising only metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a thermoelectric conversion module that performs thermoelectric power generation by the Seebeck effect.
- thermoelectric conversion module is a module composed of thermoelectric conversion elements that can convert thermal energy into electrical energy by the Seebeck effect. By using such energy conversion properties, waste heat exhausted from industrial and consumer processes and mobile objects can be converted into effective power, so the thermoelectric conversion is an energy-saving technology that takes environmental issues into consideration. A module and a thermoelectric conversion element constituting the module are attracting attention.
- thermoelectric conversion module is generally configured by joining a plurality of thermoelectric conversion elements (p-type semiconductor and n-type semiconductor) with electrodes.
- a thermoelectric conversion module is disclosed in Patent Document 1, for example.
- the thermoelectric conversion module disclosed in Patent Literature 1 is electrically connected to a pair of substrates, one end of which is disposed on one of the substrates, and the other end of the other of the substrates.
- a plurality of thermoelectric conversion elements electrically connected to the second electrode disposed on the first electrode and the first electrode electrically connected to the thermoelectric conversion element are electrically connected to the adjacent thermoelectric conversion elements;
- a connection portion for electrically connecting the two electrodes is provided.
- thermoelectric conversion module As disclosed in Patent Document 1, when the thermoelectric conversion module is mounted on a heat source such as an exhaust part of an engine and used, the amount of heat increases with an increase in the engine exhaust amount. As the temperature rises, the substrate in contact with the heat source may be distorted or curved due to thermal expansion. When such distortion or bending of the substrate occurs, stress concentrates on the terminals for drawing out the thermoelectric conversion module, or in the vicinity of the terminals (that is, the start and end of the thermoelectric conversion module), There has been a problem that the terminal is peeled off from the thermoelectric conversion element, or an electrode located in the vicinity of the terminal is peeled off from the connection portion. Such delamination leads to fluctuations in internal resistance and voltage in the thermoelectric conversion module, leading to a decrease in reliability.
- This invention is made
- the place made into the objective is to prevent peeling of an electrode etc. without depending on use conditions, and to provide the thermoelectric conversion module excellent in reliability. It is in.
- thermoelectric conversion module of the present invention is joined to a plurality of thermoelectric conversion elements arranged in parallel and one end of the thermoelectric conversion element, and electrically connects one end of the adjacent thermoelectric conversion elements.
- the first electrode and the second electrode form at least one series connection body, and a third electrode having flexibility is disposed at an end of the series connection body.
- thermoelectric conversion module According to the thermoelectric conversion module according to the present invention, it is possible to prevent exfoliation of electrodes and the like without depending on use conditions, and to realize excellent reliability.
- thermoelectric conversion module which concerns on an Example. It is a top view of the thermoelectric conversion module which concerns on an Example.
- FIG. 3 is a cross-sectional end view taken along line III-III in FIG. 2. It is a side view of the electrode used for the thermoelectric conversion module which concerns on an Example. It is a graph which shows the voltage fluctuation regarding the thermoelectric conversion module in a predetermined test. It is a graph which shows the voltage fluctuation regarding the comparative example in a predetermined test.
- thermoelectric conversion module according to the present invention
- this invention is not limited to the content demonstrated below, In the range which does not change the summary, it can change arbitrarily and can implement.
- the drawings used to describe the embodiments schematically show the thermoelectric conversion module according to the present invention or its constituent members, and are partially emphasized, enlarged, reduced, omitted, etc. for better understanding. In some cases, it does not accurately represent the scale or shape of each component.
- the various numerical values used in the embodiments are only examples, and can be variously changed as necessary.
- FIG. 1 is a perspective view of the thermoelectric conversion module 1 according to the present embodiment.
- FIG. 2 is a top view of the thermoelectric conversion module 1 according to this embodiment.
- FIG. 3 is a sectional end view taken along line III-III in FIG. 1 is defined as the X direction, the directions orthogonal to the X direction are defined as the Y direction and the Z direction, and in particular, the height direction of the thermoelectric conversion module 1 is defined as the Z direction.
- the thermoelectric conversion module 1 includes a plurality of first thermoelectric conversion elements 2 a and second thermoelectric conversion elements 2 b arranged in parallel, the first thermoelectric conversion elements 2 a, and It has the 1st electrode 3a and the 2nd electrode 3b provided in the edge part of the 2nd thermoelectric conversion element 2b.
- the thermoelectric conversion module 1 according to the present embodiment functions as a connection electrode 3 c that connects the first electrodes 3 a located at the end in the X direction of the thermoelectric conversion module 1 and an external connection electrode of the thermoelectric conversion module 1. And an extraction electrode 3d.
- thermoelectric conversion module 1 includes a first covering member 4 provided to cover the first electrode 3a, the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, and the connection electrode. It has the 2nd coating
- connection electrode 3c 1 When selecting and explaining any one of the connection electrodes 3c, the connection electrode 3c 1 , the connection electrode 3c 2 , the connection electrode 3c 3 , or the connection electrode 3c 4 is described, and any one of the extraction electrodes 3d is selected.
- the extraction electrode 3d 1 or the extraction electrode 3d 2 will be described.
- the first thermoelectric conversion element 2a is made of an N-type semiconductor material
- the second thermoelectric conversion element 2b is made of a P-type semiconductor material.
- the first thermoelectric conversion elements 2a and the second thermoelectric conversion elements 2b are arranged alternately and in a matrix (eight in the X direction, five in the Y direction, for a total of 40). Further, the adjacent first thermoelectric conversion element 2a and second thermoelectric conversion element 2b are electrically connected via the first electrode 3a and the second electrode 3b.
- the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b have a shape in which cylindrical bodies having different diameters are connected to each other. More specifically, as shown in FIG.
- the first cylindrical portion 11 having a large diameter for example, a diameter of 5 mm
- the second cylindrical portion 12 having a small diameter for example, a diameter of 3 mm
- the shape of the 1st thermoelectric conversion element 2a and the 2nd thermoelectric conversion element 2b is not limited to such a shape, For example, cylindrical shape or prismatic shape may be sufficient.
- the first electrode 3a and the second electrode 3b have the same shape (flat plate shape) and are formed of, for example, a copper plate. Further, five first electrodes 3a are arranged in parallel in the X direction and five in the Y direction (25 in total). Furthermore, only one of the first thermoelectric conversion element 2a or the second thermoelectric conversion element 2b is connected to one end of the first electrode 3a located at both ends in the X direction, and the connection electrode 3c or the extraction electrode is connected to the other end. 3d is connected. On the other hand, four second electrodes 3b are arranged in the X direction and five in the Y direction (20 in total).
- the first thermoelectric conversion element 2a is connected to one end of the second electrode 3b, and the second thermoelectric conversion element 2b is connected to the other end.
- the first electrode 3 a and the second electrode 3 b are disposed so as to sandwich the first thermoelectric conversion element 2 a and the second thermoelectric conversion element 2 b in the Z direction.
- thermoelectric conversion element 2a Due to the arrangement of the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the first electrode 3a, and the second electrode 3b, the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b are connected in series. Will be.
- One series connection 13 is formed from the electrode 3b. That is, a total of five series connection bodies 13 are formed in the thermoelectric conversion module 1.
- the serial connection bodies 13 adjacent in the Y direction are connected to each other through connection electrodes 3c.
- it when selecting and explaining any of the serial connection bodies 13, it demonstrates as the serial connection body 13a, the serial connection body 13b, the serial connection body 13c, the serial connection body 13d, or the serial connection body 13e.
- the first electrode 3a and the second electrode 3b are not limited to the copper plate, but may be formed of other conductive materials (for example, metal materials such as aluminum). Further, the quantity and shape of the first electrode 3a and the second electrode 3b are not limited to the above-described contents, but according to the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b (that is, the magnitude of the electromotive force). Can be changed as appropriate. Furthermore, you may arrange
- connection electrode 3c and the extraction electrode 3d have the same structure. Specifically, as shown in FIG. 4, both electrodes are composed of a mesh metal 21 and two metal plates 22 fixed to both ends of the mesh metal 21. Since the connection electrode 3c and the extraction electrode 3d include the mesh-like metal 21 having good flexibility, the connection electrode 3c and the extraction electrode 3d itself have flexibility. Here, the opening ratio and opening size of the mesh-like metal 21 can be appropriately set within a range in which the connection electrode 3c and the extraction electrode 3d can be provided with excellent flexibility.
- the mesh metal 21 and the metal plate 22 are made of copper, but these materials are not limited to copper, and other metals can be used.
- a material that can maintain excellent electrical conductivity while maintaining good flexibility of the connection electrode 3c and the extraction electrode 3d is preferable.
- the connection electrode 3c and the extraction electrode 3d may be made of a metal material having a structure different from the mesh shape without using the mesh metal 21 as long as the electrode itself can maintain good flexibility. .
- connection electrode 3c 1 is connected to the other end (+ X side) of the series connection body 13a connected to the extraction electrode 3d 1 located on the ⁇ Y side, via the connection electrode 3c 1 .
- One series connection body 13b located on the Y side is connected.
- series connection 13b is the end that is connected to series connection 13a is connected to the connection electrode 3c 2 even in the opposite side (-X side), one through the other connection electrode 3c 2 It will be connected to the serial connection body 13c located on the Y side.
- a series connection body 13c and series connection 13d is connected via the connection electrode 3c 3 in + X side
- a series connection body 13d and series connection 13e is a connection electrode 3c 4 in -X side Connected through. Then, the + X side of the series connection 13e is extraction electrode 3d 2 are connected.
- thermoelectric conversion module 1 Such a connection relationship between the series connection body 13 and the connection electrode 3c forms one zigzag series connection circuit in the thermoelectric conversion module 1. And since the extraction electrode 3d for external connection is arrange
- the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b in the series connection bodies 13a, 13c and 13e and the series connection bodies 13b and 13d are used. The arrangement relationship is reversed.
- the first covering member 4 covers the surface of the first electrode 3a so that the first electrode 3a is embedded.
- the first covering member 4 is made of an insulating resin, and a metal material such as aluminum, copper, or aluminum nitride that functions as a heat conductive material is mixed with the resin. With such a structure, the first covering member 4 has a relatively high thermal conductivity, and maintains a good electrical insulation state around the first electrode 3a.
- the second covering member 5 includes the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the second electrode 3b, and the connection electrode 3c.
- the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the second electrode 3b, and the connection electrode 3c are covered.
- coated member 5 is formed from resin provided with insulation, and the heat insulating material is mixed with the said resin.
- a fiber heat insulating material such as glass wool or a foam heat insulating material such as polystyrene foam can be used as the heat insulating material for forming the second covering member 5.
- the second covering member 5 has lower thermal conductivity than the first covering member 4, and the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the second electrode 3b, and the connection electrode 3c. It has a function to suppress heat dissipation.
- the second covering member 5 can increase the temperature difference between the first electrode 3a and the second electrode 3b, keep the temperature difference constant, and generate a larger electromotive force.
- coated member 5 maintains the electrical insulation state around the 1st thermoelectric conversion element 2a, the 2nd thermoelectric conversion element 2b, the 2nd electrode 3b, and the connection electrode 3c favorably.
- thermoelectric conversion module 1 since the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the second electrode 3b, and the connection electrode 3c are held relatively firmly by the second covering member 5, the strength of the thermoelectric conversion module 1 itself is increased. Can be improved. Furthermore, since the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b are completely covered, the first thermoelectric conversion element 2a and the second thermoelectric conversion element 2b can be prevented from being damaged and soiled. A reduction in thermoelectric conversion efficiency and reliability of the conversion module 1 itself can be suppressed.
- thermoelectric conversion element 2a and the 2nd thermoelectric conversion element 2b and the 1st electrode 3a and the 2nd electrode 3b are not exposed, the joining strength of a thermoelectric conversion element and an electrode is improved. At the same time, it is possible to suppress a decrease in bonding strength due to aging, and to prevent generation of cracks at the bonding interface.
- coated member 5 does not need to coat
- the second covering member 5 may be mixed with a material that functions as a heat conductive material, like the first covering member 4. Even in such a case, the second covering member 5 needs to have lower thermal conductivity than the first covering member 4.
- the main material of the first covering member 4 and the second covering member 5 is resin, but materials such as ceramics may be used. Even in such a case, the material covering the second electrode 3b needs to have a lower thermal conductivity than the material covering the first electrode 3a.
- the support substrate 6 is joined to the second electrode 3b so as to support the second electrode 3b.
- the support substrate 6 is made of an insulating material, and for example, a general insulating substrate such as a glass epoxy substrate can be used.
- thermoelectric conversion module As a manufacturing method of the thermoelectric conversion module 1 which concerns on a present Example, between the two punches which function as an electricity pressurization member which comprises a manufacturing apparatus, the prepared 1st thermoelectric conversion element 2a, 2nd thermoelectric conversion element 2b, The first electrode 3a, the second electrode 3b, the connection electrode 3c, and the extraction electrode 3d are disposed. Thereafter, current is supplied while pressurizing the two punches toward the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the first electrode 3a, the second electrode 3b, the connection electrode 3c, and the extraction electrode 3d.
- thermoelectric conversion element 2a and the second thermoelectric conversion element 2b and the first electrode 3a, the second electrode 3b, the connection electrode 3c, and the extraction electrode 3d are diffusion bonded (plasma bonded), and a plurality of first The thermoelectric conversion element 2a and the second thermoelectric conversion element 2b are connected in series to form a series connection circuit including five series connection bodies 13 and these series connection bodies.
- Such energization and pressurization is performed in a vacuum, nitrogen gas, or inert gas atmosphere chamber.
- thermoelectric conversion element 2a the bonded first thermoelectric conversion element 2a, second thermoelectric conversion element 2b, first electrode 3a, second electrode 3b, connection electrode 3c, and extraction electrode 3d are mounted on the support substrate 6. More specifically, the second electrode 3b is bonded to a metal pattern formed on the support substrate 6 via a bonding member such as solder, and the first thermoelectric conversion element 2a, the second thermoelectric conversion element 2b, the first The electrode 3a, the second electrode 3b, the connection electrode 3c, and the extraction electrode 3d are supported.
- thermoelectric conversion module 1 is completed through the above steps.
- thermoelectric conversion module 1 Comparative between this example and comparative example
- thermoelectric conversion module 1 Comparative between this example and comparative example
- comparative example a comparative product which is a comparative product
- the difference between the thermoelectric conversion module 1 according to the present embodiment and the comparative example is that in the comparative example, a non-flexible plate-like metal electrode is used as a member corresponding to the connection electrode 3c and the extraction electrode 3d. It has been done.
- FIG. 5 is a graph showing voltage fluctuations related to the thermoelectric conversion module 1 during a predetermined test
- FIG. 6 is a graph showing voltage fluctuations related to a comparative example during the predetermined test. 5 and 6, the vertical axis represents voltage (arbitrary unit), and the horizontal axis represents elapsed time (seconds).
- the predetermined test is a test in which the thermoelectric conversion module 1 and the comparative example are installed in a general-purpose engine (400 cc ⁇ 3700 rpm) as a heat source and durability is confirmed. In the predetermined test, cooling is performed using a water-cooled chiller (20 ° C. setting, flow rate: 4.5 L / min).
- thermoelectric conversion module 1 outputs a stable voltage with no voltage fluctuation after 900 seconds, although the voltage rises until 900 seconds.
- the connection electrode 3c and the extraction electrode 3d having flexibility are arranged at the end of the series connection body 13, and thus the thermoelectric This is because the connection electrode 3c and the extraction electrode 3d do not peel from the first electrode 3a even if stress concentration occurs due to the temperature rise of the conversion module 1.
- an inflexible plate-like electrode is disposed instead at the end of the series connection body 13, so that the inflexible electrode becomes the first as the temperature rises in the comparative example. It peels off from the electrode 3a, the voltage is not stable, and the fluctuation remains large.
- connection electrode 3c and the extraction electrode 3d having flexibility are arranged at the end of the series connection body 13, the stress concentration accompanying the temperature rise of the thermoelectric conversion module 1 is achieved. Even if this occurs, the connection electrode 3c and the extraction electrode 3d do not peel from the first electrode 3a. Moreover, when the thermoelectric conversion module 1 is mounted on a vehicle, electrode peeling due to engine vibration can be prevented by the above-described structure. That is, the thermoelectric conversion module 1 according to the present embodiment can prevent exfoliation of electrodes and the like without depending on use conditions, and can realize excellent reliability.
- positioned at the both ends may be sufficient. Even in this case, it is possible to reduce the influence of distortion caused by the stress generated at both ends of the thermoelectric conversion module 1, to prevent peeling of the extraction electrode 3d without depending on the use conditions, and to realize excellent reliability.
- thermoelectric conversion module plate-like metal plates are used for the first electrode 3a and the second electrode 3b.
- flexible electrodes such as the connection electrode 3c and the extraction electrode 3d are used. Good. By doing in this way, the influence of the distortion accompanying the stress in not only the end part of the thermoelectric conversion module but all the electrode parts can be reduced, and it becomes possible to provide a more reliable thermoelectric conversion module. Become.
- thermoelectric conversion module according to the first embodiment of the present invention is joined to a plurality of juxtaposed thermoelectric conversion elements and one end of the thermoelectric conversion element, and electrically connects one end of the adjacent thermoelectric conversion elements.
- thermoelectric conversion module according to the second embodiment of the present invention includes the plurality of series connection bodies in the thermoelectric conversion module according to the first embodiment described above, and the series connection bodies are connected to each other by the third electrode. Thereby, more thermoelectric conversion elements can be arrange
- thermoelectric conversion module according to the third embodiment of the present invention is the thermoelectric conversion module according to the first or second embodiment described above, wherein the third electrode includes a mesh metal.
- thermoelectric conversion module according to the fourth embodiment of the present invention is the thermoelectric conversion module according to the third embodiment described above, wherein the third electrode has a structure in which metal plates are fixed to both ends of a mesh metal. Thereby, even if stress concentration occurs in the end portion of the series connection body, the influence of the strain on the third electrode can be further reduced, and peeling of the third electrode can be reliably prevented.
- thermoelectric conversion module according to the fifth embodiment of the present invention is the thermoelectric conversion module according to any of the first to fourth embodiments described above, wherein the first electrode and the second electrode have flexibility. Thereby, the influence of the distortion accompanying the stress in not only the edge part of a thermoelectric conversion module but all the electrode parts can be reduced, and a more reliable thermoelectric conversion module is realizable.
- thermoelectric conversion module 2a 1st thermoelectric conversion element 2b 2nd thermoelectric conversion element 3a 1st electrode 3b 2nd electrode 3c Connection electrode (3rd electrode) 3d extraction electrode (third electrode) 4 first covering member 5 second covering member 6 support substrate 11 first cylindrical portion 12 second cylindrical portion 13 series connection body
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Abstract
Description
(熱電変換モジュールの構造)
以下において、図1乃至図3を参照しつつ、本実施例に係る熱電変換モジュール1の構造について説明する。ここで、図1は本実施例に係る熱電変換モジュール1の斜視図である。また、図2は本実施例に係る熱電変換モジュール1の上面図である。更に、図3は図2における線III-IIIに沿った切断部端面図である。そして、図1における一方向をX方向と定義し、X方向に直交する方向をY方向、及びZ方向と定義するとともに、特に熱電変換モジュール1の高さ方向をZ方向と定義する。
本実施例に係る熱電変換モジュール1の製造方法としては、製造装置を構成する通電加圧部材として機能する2つのパンチの間に、準備した第1熱電変換素子2a、第2熱電変換素子2b、第1電極3a、第2電極3b、接続電極3c、及び引出電極3dを配置する。その後、2つのパンチを第1熱電変換素子2a、第2熱電変換素子2b、第1電極3a、第2電極3b、接続電極3c、及び引出電極3dに向かって加圧しつつ電流を供給する。これにより、第1熱電変換素子2a及び第2熱電変換素子2bと、第1電極3a、第2電極3b、接続電極3c、及び引出電極3dとが拡散接合(プラズマ接合)され、複数の第1熱電変換素子2a及び第2熱電変換素子2bが直列に接続され、5つの直列接続体13及びこれらの直列接続体からなる直列接続回路が形成される。このような通電加圧は、真空、窒素ガス、又は不活性ガス雰囲気のチャンバ内で行われる。
次に、図5及び図6を参照しつつ、本実施例に係る熱電変換モジュール1と、比較品である比較例に係る熱電変換モジュール(以下、比較例と称する)とについて実施した試験及びその結果について説明する。ここで、本実施例に係る熱電変換モジュール1と比較例との相違点は、比較例には接続電極3c及び引出電極3dに相当する部材として、非可撓性の板状の金属電極が使用されていることである。
本発明の第1実施態様に係る熱電変換モジュールは、並設された複数の熱電変換素子と、前記熱電変換素子の一端に接合され、隣接する前記熱電変換素子の一端同士を電気的に接続する第1電極と、前記熱電変換素子の他端に接合され、隣接する前記熱電変換素子の他端同士を電気的に接続する第2電極と、を有し、前記複数の熱電変換素子、前記第1電極、及び前記第2電極は、少なくとも1つの直列接続体を形成し、前記直列接続体の端部には可撓性を備える第3電極が配設されている。これにより、使用条件に依存することなく電極等の剥離を防止し、優れた信頼性を実現することができる。
2a 第1熱電変換素子
2b 第2熱電変換素子
3a 第1電極
3b 第2電極
3c 接続電極(第3電極)
3d 引出電極(第3電極)
4 第1被覆部材
5 第2被覆部材
6 支持基板
11 第1円柱部
12 第2円柱部
13 直列接続体
Claims (5)
- 並設された複数の熱電変換素子と、
前記熱電変換素子の一端に接合され、隣接する前記熱電変換素子の一端同士を電気的に接続する第1電極と、
前記熱電変換素子の他端に接合され、隣接する前記熱電変換素子の他端同士を電気的に接続する第2電極と、を有し、
前記複数の熱電変換素子、前記第1電極、及び前記第2電極は、少なくとも1つの直列接続体を形成し、
前記直列接続体の端部には可撓性を備える第3電極が配設されている熱電変換モジュール。 - 前記直列接続体を複数有し、
前記直列接続体同士を前記第3電極によって接続する請求項1に記載の熱電変換モジュール。 - 前記第3電極は、メッシュ状金属を含む請求項1又は2に記載の熱電変換モジュール。
- 前記第3電極は、前記メッシュ状金属の両端に金属板が固着された構造を備える請求項3に記載の熱電変換モジュール。
- 前記第1電極及び前記第2電極は、可撓性を備える請求項1乃至4のいずれか1項に記載の熱電変換モジュール。
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KR1020187025813A KR102154007B1 (ko) | 2016-03-10 | 2017-03-07 | 열전 변환 모듈 |
EP17763257.7A EP3428981B1 (en) | 2016-03-10 | 2017-03-07 | Thermoelectric conversion module |
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KR102154007B1 (ko) | 2020-09-09 |
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EP3428981A1 (en) | 2019-01-16 |
CN108780832A (zh) | 2018-11-09 |
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