WO2021167204A1 - Appareil de génération thermoélectrique ayant des éléments thermoélectriques intégrés - Google Patents

Appareil de génération thermoélectrique ayant des éléments thermoélectriques intégrés Download PDF

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Publication number
WO2021167204A1
WO2021167204A1 PCT/KR2020/015286 KR2020015286W WO2021167204A1 WO 2021167204 A1 WO2021167204 A1 WO 2021167204A1 KR 2020015286 W KR2020015286 W KR 2020015286W WO 2021167204 A1 WO2021167204 A1 WO 2021167204A1
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Prior art keywords
thermoelectric
heat
heat source
thermoelectric element
elements
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PCT/KR2020/015286
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English (en)
Korean (ko)
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권택율
윤영균
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주식회사 리빙케어
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Publication of WO2021167204A1 publication Critical patent/WO2021167204A1/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
    • H10N10/01—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
    • H10N10/10—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
    • H10N10/80—Constructional details

Definitions

  • the present invention relates to a thermoelectric power generation device in which thermoelectric elements are integrated, and more particularly, it includes a heat collecting housing in which installation positions are partitioned so that at least two thermoelectric elements can be installed between a thermoelectric element and a heat source, and heat energy from a single heat source It relates to a thermoelectric generator that maximizes absorption efficiency and integrates thermoelectric elements that can conveniently implement a highly reliable thermoelectric generator.
  • 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 the main problem of such a thermoelectric generator is a relatively low conversion efficiency (typically about 5%). This problem limits the use of the thermoelectric generator as a power generator in many fields where reliability is an important consideration.
  • An object of the present invention is to provide a heat collecting housing in which an installation location is partitioned so that at least two thermoelectric elements can be installed between a thermoelectric element and a heat source, thereby maximizing the efficiency of absorbing heat energy from a single heat source, and providing a highly reliable thermoelectric generator conveniently.
  • An object of the present invention is to provide a thermoelectric power generation device that integrates thermoelectric elements that can be easily implemented.
  • thermoelectric element for generating an electromotive force using the temperature difference between a high temperature part and a low temperature part, a heat source for transferring heat to a high temperature part of the thermoelectric element, and provided between the heat source and the thermoelectric element
  • thermoelectric generator integrating thermoelectric elements including a heat collecting housing in which installation positions of the thermoelectric elements are partitioned so that at least two of the thermoelectric elements can be installed.
  • thermoelectric element may be formed as an integrated thermoelectric module in which a water jacket is provided at a low temperature part.
  • a temperature sensor may be further provided on the outer surface of the thermoelectric element or the heat collecting housing.
  • the heat source may be a heat source selected from the group consisting of a planar heat source, a cylindrical heat source, and a flame heat source.
  • At least two installation panels for installing the thermoelectric elements may be further provided on an outer surface of the heat collecting housing.
  • thermoelectric element it is provided with a heat collecting housing in which the installation position is partitioned so that at least two thermoelectric elements can be installed between the thermoelectric element and the heat source, thereby maximizing the efficiency of absorbing heat energy from a single heat source and providing a highly reliable thermoelectric generator conveniently.
  • 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 showing the overall appearance of a thermoelectric generator in which thermoelectric elements are integrated according to an embodiment of the present invention.
  • thermoelectric generator 3 is an enlarged schematic view of one end of the thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention in a state in which the heat source is removed.
  • thermoelectric generator 4 is an enlarged schematic diagram of an outer peripheral surface of a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention.
  • thermoelectric element installation position of a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention.
  • thermoelectric element for generating an electromotive force using the temperature difference between a high temperature part and a low temperature part, a heat source for transferring heat to a high temperature part of the thermoelectric element, and provided between the heat source and the thermoelectric element
  • thermoelectric generator integrating thermoelectric elements including a heat collecting housing in which installation positions of the thermoelectric elements are partitioned so that at least two of the thermoelectric elements can be installed.
  • thermoelectric element may be formed as an integrated thermoelectric module in which a water jacket is provided at a low temperature part.
  • a temperature sensor may be further provided on the outer surface of the thermoelectric element or the heat collecting housing.
  • the heat source may be a heat source selected from the group consisting of a planar heat source, a cylindrical heat source, and a flame heat source.
  • At least two installation panels for installing the thermoelectric elements may be further provided on an outer surface of the heat collecting housing.
  • FIG. 2 is a schematic diagram showing the overall appearance of a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention
  • FIG. 3 is a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention. An enlarged schematic diagram of one end is shown in a state in which the heat source is removed
  • FIG. 4 is an enlarged schematic diagram of the outer peripheral surface of a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention.
  • thermoelectric element installation position of a thermoelectric generator integrating thermoelectric elements according to an embodiment of the present invention.
  • the thermoelectric generator 100 incorporating the thermoelectric elements according to the present invention includes a thermoelectric element 111 that generates an electromotive force using the temperature difference between a high temperature part and a low temperature part, and a high temperature part of the thermoelectric element 111 . It is provided between the heat source 130 for transferring heat and the heat source 130 and the thermoelectric element 111, so that at least two of the thermoelectric elements 111 can be installed. It is configured to include a heat collecting housing (130).
  • the installation position 131 is partitioned so that at least two thermoelectric elements can be installed between the thermoelectric element 111 and the heat source 120 , and a plurality of
  • the heat collecting housing 130 that can integrate the thermoelectric elements of the heat source around the heat source, it is possible to maximize the efficiency of absorbing heat energy from the single heat source 130, and to conveniently implement a highly reliable and stable thermoelectric generator.
  • thermoelectric generator 100 when the configuration of the thermoelectric generator 100 is sequentially viewed from the bottom to the top from the side of the thermoelectric power generation, first, the heat source 120 is disposed at the bottom end, and a heat absorbing plate ( 113) and the thermoelectric element 111 are disposed. Accordingly, as the heat energy generated from the heat source 120 moves upward, the temperature of the high-temperature substrate of the thermoelectric element 111 is increased, and the low-temperature substrate is cooled by external air, etc., and a significant temperature difference between the upper and lower portions of the thermoelectric element 111 is increased. By generating , the thermoelectric element 111 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 111 .
  • thermoelectric element 111 The optimum power generation temperature of the thermoelectric element 111 and the temperature difference ( ⁇ t) between the high temperature and low temperature regions appear differently depending on the type of thermoelectric element used. For example, in the case of a thermoelectric element made of a Bi-Te-based alloy, ⁇ t It is possible to produce the maximum amount of electricity at 200 ⁇ 250°C level. Also, in the case of SKD or H-H thermoelectric elements, the maximum amount of power is generated at 500 ⁇ 600°C.
  • thermoelectric power generation system since the amount of power generation increases proportionally or linearly by ⁇ t, which is the temperature difference between the temperature of the high temperature part and the low temperature part of the thermoelectric element, it is advantageous to obtain a large ⁇ t as much as possible. , it is possible to secure a large ⁇ t, but the reliability, that is, durability, of the thermoelectric power generation system may drop exponentially. Therefore, it is necessary to take measures to derive the optimal level of power generation by flexibly applying the thermoelectric power generation system according to the aspect of the heat source, and the thermoelectric power generation device 100 according to the present invention can effectively satisfy this need.
  • thermoelectric semiconductors composed of p-type semiconductors and n-type semiconductors are disposed between these electrodes to absorb from the high-temperature portion substrate.
  • Current is generated in the process of transferring heat to the low-temperature substrate. That is, in the thermoelectric element 111 , due to the temperature difference between the high-temperature substrate and the low-temperature substrate in the p-type semiconductor, holes move from the high-temperature substrate to the low-temperature substrate, and in the n-type semiconductor, electrons move from the high-temperature substrate to the low-temperature substrate. 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., so as to exhibit continuous thermoelectric performance in a high temperature region ( ⁇ 300° C.).
  • 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.
  • the thermoelectric element 111 may be formed as an integrated thermoelectric module 110 with a water jacket 112 provided at a low temperature part. As described above, the thermoelectric module 111 integrated with the water jacket 112 in the low-temperature part is a water-cooled thermoelectric module. ) may be provided. In addition, it is possible to improve heat dissipation efficiency by additionally providing a fitting valve (not shown) to adjust the pressure of the radiating water supplied by the radiating water control valve.
  • thermoelectric module 110 integrated with the water jacket 112 increases the temperature difference between the high temperature part and the low temperature part of the thermoelectric element 111, thereby increasing the efficiency of generating current due to the Seebeck effect. can be further improved.
  • thermoelectric generator is implemented so that the appropriate temperature range of the heat absorbing plate 113 is 100 to 300° C., and the temperature range of the water jacket 112 is 20 to 80° C., thereby generating current due to the Seebeck effect. can be further improved.
  • a temperature sensor 160 may be further provided on the outer surface of the thermoelectric element 111 or the heat collecting housing 130 .
  • the temperature sensor 160 may be appropriately installed around the thermoelectric element 111 and the heat collecting housing 130 in consideration of the convenience of installation and the accuracy of temperature measurement of the thermoelectric element 111 according to the structure of the heat source 120. have.
  • the number of thermoelectric elements 111 installed in the heat collecting housing 130 can be operated by dividing the required quantity into several groups according to the desired desired power or desired voltage through the thermoelectric generator 100 , and each thermoelectric element A measuring device capable of monitoring voltage and current and a central control device are installed in each group, and the central control device can implement On-Off control of the group in which an error occurs.
  • the type of the heat source 120 to which the thermoelectric generator 100 is applied is not particularly limited, and may be, for example, a heat source selected from the group consisting of a planar heat source, a columnar heat source, and a flame heat source.
  • the flame-type heat source is not directly used for a heat absorbing plate, but uses a flat or cylindrical structure around the flame to use radiation, conduction, and convective heat. It can be applied and used.
  • the material of the heat source 120 may be applied in a solid form such as a metal bar or a liquid form such as a molten metal, and the final form in contact with the heat absorbing plate 113 is in the form of heat. It is preferable to implement it so that it becomes a phosphorus gaseous state.
  • At least two installation panels 140 for installing the thermoelectric elements may be further provided on an outer surface of the heat collecting housing 130 .
  • the installation panel 140 can prevent deformation or damage of the thermoelectric element 111 due to overheating by providing an appropriately spaced distance between the thermoelectric element 111 and the heat source 120, and the thermoelectric element 111. can maintain a more stable bonding state of
  • the installation panel 140 includes the thermoelectric element between the thermoelectric element 111 and the heating source 120 so that the distance between the heating source 120 and the thermoelectric element 111 is changed according to the temperature of the thermoelectric element 111 . It may be formed to move the position of (111).
  • at least one rack having first gear teeth is installed on each side to penetrate both sides of the thermoelectric module 110 including the thermoelectric element 111 , and the thermoelectric module A pinion assembly including a pinion formed on the rotation shaft of the rotary motor and having a second gear tooth engaged with the first gear tooth is formed in 110, depending on the temperature of the thermoelectric element 111, the heat source 120 and the The position of the thermoelectric elements 111 may be moved so that the distance between the thermoelectric elements 111 is changed.
  • the central portion of the installation panel 140 is formed in a penetrating shape so that the heat absorbing plate 113 of the thermoelectric module 110 can be disposed, and the installation panel Racks having first gear teeth are formed on both sides of the 140 so that these racks pass through both sides of the water jacket 112 of the thermoelectric module 110 .
  • a pinion assembly including a rotation motor and a pinion having a second gear tooth meshing with the first gear tooth of the rack is formed, respectively.
  • a temperature sensor 160 is installed on the upper surface of the water jacket 112 to measure the temperature of the thermoelectric module 110 .
  • the rotary motor is driven to cause the thermoelectric module 110 and the heat absorbing plate 113 to become a heat source. Control to move away from 120, and when the temperature of the thermoelectric module 110 measured by the temperature sensor 160 decreases to the extent that it interferes with the power generation efficiency, the rotation motor is driven in the opposite direction to drive the thermoelectric module 110 ) and the heat absorbing plate 113 are controlled to be close to the heat source 120 so that the thermoelectric generator 100 maintains a uniform thermoelectric power generation state and prevents thermal deformation and damage of the thermoelectric module 110 . do.
  • the present invention provides a thermoelectric element for generating an electromotive force by using the temperature difference between a high temperature part and a low temperature part, a heat source for transferring heat to a high temperature part of the thermoelectric element, and at least two thermoelectric elements provided between the heat source and the thermoelectric element.
  • the present invention relates to a thermoelectric power generation device in which thermoelectric elements are integrated, including a heat collecting housing in which the installation positions of the thermoelectric elements are partitioned so that the thermoelectric elements are integrated.
  • thermoelectric element it is provided with a heat collecting housing in which the installation position is partitioned so that at least two thermoelectric elements can be installed between the thermoelectric element and the heat source, thereby maximizing the efficiency of absorbing heat energy from a single heat source and providing a highly reliable thermoelectric generator conveniently.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un appareil de génération thermoélectrique ayant des éléments thermoélectriques intégrés, comprenant : un élément thermoélectrique pour générer une force électromotrice en utilisant la différence de température entre une partie à haute température et une partie à basse température ; une source de chaleur pour transférer de la chaleur à la partie à haute température de l'élément thermoélectrique ; et un boîtier de collecte de chaleur qui est disposé entre la source de chaleur et l'élément thermoélectrique, et dans lequel la position de fourniture de l'élément thermoélectrique est divisée de telle sorte qu'au moins deux éléments thermoélectriques peuvent être disposés. Selon la présente invention, en disposant le boîtier de collecte de chaleur disposé entre la source de chaleur et l'élément thermoélectrique et ayant des positions de fourniture partitionnées de telle sorte qu'au moins deux éléments thermoélectriques peuvent être disposés, l'efficacité d'absorption d'énergie thermique à partir d'une seule source de chaleur peut être maximisée, et un appareil de génération thermoélectrique avec une fiabilité élevée peut être mis en œuvre de façon pratique.
PCT/KR2020/015286 2020-02-18 2020-11-04 Appareil de génération thermoélectrique ayant des éléments thermoélectriques intégrés WO2021167204A1 (fr)

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KR20200019874 2020-02-18
KR10-2020-0019874 2020-02-18

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WO2021167204A1 true WO2021167204A1 (fr) 2021-08-26

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238487A (ja) * 1996-03-01 1997-09-09 Paloma Ind Ltd 直列型熱電対
JP2013141355A (ja) * 2011-12-30 2013-07-18 Jfe Steel Corp 熱電発電方法及び装置
KR20170083682A (ko) * 2016-01-08 2017-07-19 한국전자통신연구원 열전 발전기
KR20170099281A (ko) * 2016-02-23 2017-08-31 동명대학교산학협력단 캠핑용 열전발전장치
KR20180046195A (ko) * 2016-10-27 2018-05-08 현대자동차주식회사 열전 모듈 제조 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238487A (ja) * 1996-03-01 1997-09-09 Paloma Ind Ltd 直列型熱電対
JP2013141355A (ja) * 2011-12-30 2013-07-18 Jfe Steel Corp 熱電発電方法及び装置
KR20170083682A (ko) * 2016-01-08 2017-07-19 한국전자통신연구원 열전 발전기
KR20170099281A (ko) * 2016-02-23 2017-08-31 동명대학교산학협력단 캠핑용 열전발전장치
KR20180046195A (ko) * 2016-10-27 2018-05-08 현대자동차주식회사 열전 모듈 제조 장치

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