WO2021194049A1 - Appareil de génération thermoélectrique - Google Patents

Appareil de génération thermoélectrique Download PDF

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Publication number
WO2021194049A1
WO2021194049A1 PCT/KR2020/018050 KR2020018050W WO2021194049A1 WO 2021194049 A1 WO2021194049 A1 WO 2021194049A1 KR 2020018050 W KR2020018050 W KR 2020018050W WO 2021194049 A1 WO2021194049 A1 WO 2021194049A1
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WO
WIPO (PCT)
Prior art keywords
thermoelectric
support panel
temperature
thermoelectric element
thermoelectric generator
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Application number
PCT/KR2020/018050
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English (en)
Korean (ko)
Inventor
권택율
권회준
Original Assignee
주식회사 리빙케어
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Publication of WO2021194049A1 publication Critical patent/WO2021194049A1/fr

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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
    • H10N10/13—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 heat-exchanging means at the junction
    • 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

Definitions

  • the present invention relates to a thermoelectric generator, and more particularly, to a thermoelectric generator by arranging a support panel around a low temperature part of the thermoelectric generator to prevent mechanical stress, deformation, and damage of the thermoelectric generator due to a temperature change in the peripheral part. It relates to a thermoelectric generator capable of maintaining the performance and improving reliability.
  • the present invention is derived from research conducted as part of the energy technology development project of the Ministry of Trade, Industry and Energy and the Korea Energy Technology Evaluation Institute [Project management number: 20172010000760, Project name: 10kW class thermoelectric power generation using unused waste heat from the melting and casting process of non-ferrous industry system development].
  • Thermoelectric technology is an eco-friendly energy technology that can freely convert heat and electricity by utilizing the Seebeck effect that converts thermal energy into electrical energy and the Peltier effect that converts electrical energy into thermal energy.
  • thermoelectric element 1 is a schematic diagram showing the basic principle for cooling (Peltier effect) and power generation (Seebeck effect) by a thermoelectric element is disclosed. In both cases, the scope of application depends on whether electrons and holes move charge or heat.
  • Thermoelectric energy conversion is implemented in the form of a module composed of n-type and p-type semiconductor thermoelectric materials and electrodes connected in series.
  • thermoelectric generation is a phenomenon in which an electromotive force is generated by a temperature difference applied to both ends of a module, and thermoelectric cooling uses a phenomenon in which heat flows by an applied current.
  • thermoelectric generators have been variously applied to household appliances or devices such as gas burners, stoves, or heating elements.
  • Gas burners have recently been widely used for heating in apartments and homes, or for cooking indoors and outdoors.
  • heating and cooking methods using a gas burner are preferred in many places.
  • the waste heat remaining after heating the heat exchanger of the gas burner is discharged to the outside as it is and wasted.
  • the thermal energy of the wasted gas is converted into electricity by a thermoelectric generator for power generation and energy saving for people's daily lives, and can be usefully used as power consumption for electric fans, lights, TVs, chargers, and the like.
  • thermoelectric module (thermopile) including an array of Bi 2 Te 3 based semiconductor devices.
  • the configuration of this module provides a chemically stable environment for the thermoelectric material to ensure a long lifespan.
  • the gas burner is installed on one side of the thermopile, and the other side is kept cold with aluminum cooling fins or heat pipe parts.
  • the thermoelectric module operates as a thermoelectric generator by maintaining a temperature of about 540° C. on the high temperature side and about 140° C. on the low temperature side. The flow of heat through a thermopile can produce stable DC power without mechanical motion.
  • thermoelectric power generation device using the Seebeck effect of the thermoelectric element continues to increase in demand and necessity in line with recent environmental pollution and energy saving issues.
  • various exhaust gases and waste heat can be used as energy sources to increase energy efficiency or collect waste heat, such as automobile engines and exhaust systems, waste heat from waste incinerators, steel mills, and power sources for medical devices in the human body using human body heat. It can be applied to various fields of use.
  • thermoelectric generator module has a limited range of use because it is deformed depending on the external temperature or is placed in an unusable state. As a result, electric energy production through waste heat generated at industrial sites could not be smoothly performed. For example, at 150° C. or higher, deformation of the thermoelectric generator module may occur, and when it exceeds 200° C., the user may become impossible.
  • An object of the present invention is to prevent mechanical stress, deformation, and damage of the thermoelectric generator due to temperature change in the periphery by arranging a support panel around the low temperature part of the thermoelectric generator to maintain the performance of the thermoelectric generator and improve reliability.
  • thermoelectric element for generating an electromotive force using the temperature difference between the high temperature portion and the low temperature portion; and a support panel disposed around the low temperature portion of the thermoelectric element.
  • the support panel may be made of a metal material.
  • a water cooling jacket may be provided between the support panel and the low temperature part of the thermoelectric element.
  • An elastic member may be disposed between the support panel and the water cooling jacket.
  • the elastic member may be formed of a spring or a plate-shaped spring.
  • thermoelectric generator it is possible to maintain the performance of the thermoelectric generator and improve reliability by arranging the support panel around the low temperature part of the thermoelectric generator to prevent mechanical stress, deformation, and damage of the thermoelectric generator due to the temperature change of the peripheral part.
  • thermoelectric element 1 is a schematic diagram showing the basic principles of the Peltier effect and the Seebeck effect by a thermoelectric element.
  • FIG. 2 is a schematic diagram illustrating an enlarged state of an overall state in which a spring is installed between a support panel and a water cooling jacket of a thermoelectric generator according to an embodiment of the present invention and an enlarged state of a spring installation part.
  • FIG. 3 is a schematic diagram illustrating an enlarged state of the overall state in which the plate spring is installed between the support panel and the water cooling jacket of the thermoelectric generator according to an embodiment of the present invention and the state in which the plate spring is installed.
  • thermoelectric generator 4 is a schematic diagram showing the overall appearance of the plate spring of the thermoelectric generator according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing the overall appearance of a spring installed between the support panel and the water cooling jacket of the thermoelectric generator according to an embodiment of the present invention and an enlarged state of the spring installation part
  • FIG. 3 is a schematic diagram showing the overall appearance of the plate-shaped spring installed between the support panel and the water cooling jacket of the thermoelectric generator according to an embodiment of the present invention and the enlarged state of the plate-shaped spring installation part
  • 4 is a schematic diagram showing the overall appearance of the plate spring of the thermoelectric generator according to an embodiment of the present invention.
  • thermoelectric generator 100 includes a thermoelectric element 110 for generating an electromotive force using a temperature difference between a high temperature part and a low temperature part; and a support panel 120 disposed around the low-temperature portion of the thermoelectric element 110 .
  • thermoelectric generator 100 in the thermoelectric generator 100 according to the present invention, the heat collecting plate 140 , the thermoelectric element 110 and the support panel 120 maintain a stable fastening state to maintain the power generation output characteristics, and the thermoelectric element 110 of the thermoelectric element 110 .
  • Thermoelectric generator 100 by preventing mechanical stress and deformation, shear force action, damage, etc. of the thermoelectric semiconductor inside the thermoelectric element 110 due to the temperature change in the periphery of the thermoelectric element 110 through the support panel 120 installed around the low temperature part ) can maintain the performance and improve reliability. In particular, it is possible to improve the reliability of the thermoelectric generator by improving problems such as mechanical stress, thermal deformation, and non-uniform pressure distribution that may be concentrated in the peripheral edge of the thermoelectric element 110 .
  • thermoelectric generator 100 when the configuration of the thermoelectric generator 100 is sequentially viewed from the bottom to the top, a heat source (not shown) is disposed at the bottom end first, and a heat collecting plate 140, a thermoelectric element ( 110) and the support panel 120 are disposed. Therefore, as the heat energy generated from the heat source moves upward, the temperature of the high-temperature substrate of the thermoelectric element 110 is increased, and the low-temperature substrate is cooled by external air, etc. to generate a significant temperature difference between the upper and lower portions of the thermoelectric element 110. Accordingly, the thermoelectric element 110 generates a current due to the Seebeck effect. The generated current is transmitted to the outside by an electrode connection line (not shown) connected to the thermoelectric element 110 .
  • thermoelectric generator 100 arranges the support panel 120 on the outside of the low-temperature substrate of the thermoelectric element 110 to provide a temperature between the heat generated from the heat source and the high-temperature substrate of the thermoelectric element 110 and the external cooling air. Since the thermoelectric element 110 can efficiently and stably generate electricity by minimizing the mechanical stress and deformation of the low-temperature part substrate that may occur due to the difference, the efficiency is high, and the reliability and stability are excellent.
  • thermoelectric semiconductors composed of p-type semiconductors and n-type semiconductors are disposed between these electrodes.
  • Current is generated in the process of transferring heat to the low-temperature substrate. That is, in the thermoelectric element 110, holes move from the high-temperature substrate to the low-temperature substrate in the p-type semiconductor due to the temperature difference between the high-temperature substrate and the low-temperature substrate in the thermoelectric element 110, and in the n-type semiconductor, electrons move from the high-temperature substrate to the low-temperature substrate in the n-type semiconductor. direction, and according to the movement of these holes and electrons, a current flows in a counterclockwise direction, and is transmitted to the outside by an electrode connection line (not shown).
  • an insulating resin layer having electrical insulation performance may be further formed between the high temperature portion substrate and the electrode and between the low temperature portion substrate and the electrode, respectively.
  • a heat-resistant resin having a glass transition temperature (Tg) of 250° C. or higher, preferably 250 to 300° C. is used so as to exhibit continuous thermoelectric performance in a high temperature region ( ⁇ 300° C.). desirable.
  • the insulating resin layer may include at least one of a thermosetting resin and a thermoplastic resin.
  • the thermosetting resin include an epoxy resin, a polyurethane resin, an alkyd resin, a phenol resin, a melamine resin, a silicone resin, a urea resin, a vegetable oil-modified phenol resin, a xylene resin, a guanamine resin, a diallyl phthalate resin, It may be at least one selected from the group consisting of a vinyl ester resin, an unsaturated polyester resin, a furan resin, a polyimide resin, a cyanate resin, a maleimide resin, and a benzocyclobutene resin.
  • the thermosetting resin may be at least one selected from the group consisting of an epoxy resin, a phenol resin, a melamine resin, a silicone resin, a urethane resin, and a urea resin.
  • thermoelectric element 110 , the heat collecting plate 140 , and the support panel 120 may be fixed to each other by, for example, a mechanical coupling structure or a clamping structure, and the thermoelectric element 110 is disposed therebetween.
  • the support panel 120 and the heat collecting plate 140 may be integrated with each other by a bolt fastening member 160 penetrating the edge portion.
  • thermoelectric generator 100 of the present invention the thermoelectric element 110 is disposed between the support panel 120 and the heat collecting plate 140 without directly connecting the thermoelectric element 110 and the heat collecting plate 140 through the fastening member 160 .
  • thermoelectric element 110 has the advantage of improving the performance of the thermoelectric generator 100 by minimizing the mechanical stress and thermal deformation.
  • the material of the support panel 120 is not particularly limited as long as it is a material capable of preventing thermal deformation of the low-temperature substrate, and for example, may be made of a metal material such as stainless steel or stainless alloy.
  • a water cooling jacket 130 may be provided between the support panel 120 and the low temperature portion of the thermoelectric element 110 .
  • the output of the thermoelectric generator 100 is maximized while minimizing the mechanical stress and thermal deformation of the low-temperature substrate of the thermoelectric element 110 , and at the same time maximizing the heat dissipation effect. properties can be further improved.
  • the thickness T1 of the support panel 120 and the thickness T2 of the water cooling jacket 130 are the same in a thickness range of about 10 to 20 mm.
  • the support panel 120 and the water cooling jacket 130 have the same planar size.
  • the horizontal axes W1 and W2 of the support panel 120 have a size of 130 to 150 mm. It can be, and the vertical axis (L1, L2) size on the plane may be formed of 120 to 140mm.
  • An elastic member 170 or 180 may be further disposed between the support panel 120 and the water cooling jacket 130 , and the elastic member may be formed of, for example, a spring 170 or a plate-shaped spring 180 . have.
  • the elastic member made of the spring 170 or the plate spring 180 serves to maintain a constant pressure in response to thermal expansion or contraction of the low-temperature substrate of the thermoelectric element 110, the support panel 120, and water cooling.
  • the jacket 130 and the heat collecting plate 140 may be fixed between the support panel 120 and the water cooling jacket 130 by the bolt fastening member 160 penetrating the rim portion as a whole.
  • the structure surrounding the bolt fastening member 160 may be installed to have a larger diameter than the bolt fastening member 160.
  • the diameter size of the spring 170 is yes
  • it may be formed from 8.0 mm to 9.0 mm.
  • the diameter size of the filament itself constituting the spring 170 may be, for example, 0.8 mm to 1.3 mm, and the length of the free-field state may be formed to be 18 mm to 23 mm.
  • the length D1 in the longitudinal direction may be, for example, 130 to 150 mm, and the length D2 in the width direction may be formed to be 20 to 35 mm.
  • the thickness of the plate spring 180 may be formed to a thickness of 5 to 7 mm.
  • thermoelectric generator 100 When the thermoelectric generator 100 according to the present invention is implemented as a relatively low-capacity power generation device using a small number of thermoelectric elements 110 , a spring 170 is provided between the support panel 120 and the water cooling jacket 130 .
  • the thermoelectric element 110 By disposing the thermoelectric element 110 to maintain a constant pressure in response to thermal expansion or contraction of the low-temperature substrate, the weight increase of the thermoelectric generator 100 can be minimized and power generation performance can be improved, and a plurality of thermoelectric elements ( When implemented as a high-capacity power generation device using 110), the plate spring 180 is disposed between the support panel 120 and the water cooling jacket 130 to more effectively prevent thermal expansion or contraction of the low-temperature substrate of the thermoelectric element 110. Correspondingly, it may be configured to keep the pressure constant.
  • thermoelectric power generation device is manufactured by arranging the spring 170 between the support panel 120 and the water cooling jacket 130 to set a constant pressure in response to thermal expansion or contraction of the low-temperature substrate of the thermoelectric elements 110 .
  • 6 or more of the plate-shaped springs 180 are disposed between the support panel 120 and the water cooling jacket 130 to respond to thermal expansion or contraction of the low-temperature substrate of the thermoelectric elements 110 and pressure can be implemented to keep it constant.
  • thermoelectric element for generating an electromotive force using the temperature difference between the high temperature portion and the low temperature portion; and a support panel disposed around the low temperature portion of the thermoelectric element.
  • the support panel may be made of a metal material.
  • a water cooling jacket may be provided between the support panel and the low temperature part of the thermoelectric element.
  • An elastic member may be disposed between the support panel and the water cooling jacket.
  • the elastic member may be formed of a spring or a plate-shaped spring.
  • the present invention relates to a thermoelectric element generating an electromotive force by using a temperature difference between a high temperature part and a low temperature part; and a support panel disposed around a low temperature portion of the thermoelectric element.
  • thermoelectric generator it is possible to maintain the performance of the thermoelectric generator and improve the reliability by arranging the support panel around the low temperature part to prevent mechanical stress, deformation, and damage of the thermoelectric generator due to the temperature change of the peripheral part. .

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Abstract

La présente invention concerne un appareil de génération thermoélectrique comprenant : un dispositif thermoélectrique qui génère une force électromotrice en utilisant la différence de température entre une partie à haute température et une partie à basse température ; et un panneau de support situé à proximité de la partie basse température du dispositif thermoélectrique. Selon la présente invention, par l'emplacement du panneau de support au voisinage de la partie basse température, le dispositif de génération thermoélectrique est empêché de subir une contrainte mécanique et une déformation, des dommages, ou similaires provoqués par un changement de température de la zone de voisinage, et ainsi, il existe des effets de maintien de la performance de l'appareil de génération thermoélectrique et d'amélioration de la fiabilité.
PCT/KR2020/018050 2020-03-24 2020-12-10 Appareil de génération thermoélectrique WO2021194049A1 (fr)

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KR20200035846 2020-03-24
KR10-2020-0035846 2020-03-24

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WO2021194049A1 true WO2021194049A1 (fr) 2021-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115208239A (zh) * 2022-06-22 2022-10-18 深圳市南霸科技有限公司 一种热量处理装置和温差发电器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130073554A (ko) * 2011-12-23 2013-07-03 삼성전기주식회사 열전 모듈 및 열전 모듈의 제조방법
KR20130106809A (ko) * 2010-09-13 2013-09-30 템프로닉스, 인크. 분산된 열전 스트링과 단열 패널 및 국부 가열, 국부 냉각, 및 열에 의한 전력 발생을 위한 적용들
JP2017059823A (ja) * 2015-09-18 2017-03-23 三菱マテリアル株式会社 熱電変換モジュール及び熱電変換装置
KR20190019768A (ko) * 2017-08-18 2019-02-27 주식회사 엘지화학 열전 발전 장치
KR20200021376A (ko) * 2018-08-20 2020-02-28 주식회사 테그웨이 탄성 열 전달 부재 및 이를 포함하는 열전 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130106809A (ko) * 2010-09-13 2013-09-30 템프로닉스, 인크. 분산된 열전 스트링과 단열 패널 및 국부 가열, 국부 냉각, 및 열에 의한 전력 발생을 위한 적용들
KR20130073554A (ko) * 2011-12-23 2013-07-03 삼성전기주식회사 열전 모듈 및 열전 모듈의 제조방법
JP2017059823A (ja) * 2015-09-18 2017-03-23 三菱マテリアル株式会社 熱電変換モジュール及び熱電変換装置
KR20190019768A (ko) * 2017-08-18 2019-02-27 주식회사 엘지화학 열전 발전 장치
KR20200021376A (ko) * 2018-08-20 2020-02-28 주식회사 테그웨이 탄성 열 전달 부재 및 이를 포함하는 열전 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115208239A (zh) * 2022-06-22 2022-10-18 深圳市南霸科技有限公司 一种热量处理装置和温差发电器

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