CN215990603U - All-solid-state flexible thermoelectric conversion device - Google Patents
All-solid-state flexible thermoelectric conversion device Download PDFInfo
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- CN215990603U CN215990603U CN202122408759.1U CN202122408759U CN215990603U CN 215990603 U CN215990603 U CN 215990603U CN 202122408759 U CN202122408759 U CN 202122408759U CN 215990603 U CN215990603 U CN 215990603U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 23
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 24
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004132 cross linking Methods 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 239000005022 packaging material Substances 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000002238 carbon nanotube film Substances 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000012466 permeate Substances 0.000 abstract description 3
- 239000011259 mixed solution Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007783 nanoporous material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
An all-solid-state flexible thermoelectric conversion device relates to the field of heat energy recovery and conversion, and comprises a nano porous electrode with a nano-scale hole, a solid electrolyte, conductive silver paste and two current collectors, wherein the nano porous electrode adopts a carbon cloth electrode, the nano porous electrode is bonded on a first current collector through the conductive silver paste, the solid electrolyte is obtained by pouring an electrolyte solution containing a high molecular polymer on the nano porous electrode, and after the electrolyte solution permeates, the electrolyte solution is repeatedly frozen at low temperature and thawed at room temperature for crosslinking and solidification; the heat source recovery device is suitable for various heat sources with curved surfaces, can recover and convert low-grade waste heat energy, and provides a new idea for secondary utilization of energy; and the device is soft, light, convenient to install, carry and transport.
Description
Technical Field
The utility model relates to the field of heat energy recovery and conversion and design and manufacture of a flexible thermoelectric conversion device, in particular to an all-solid-state flexible thermoelectric conversion device.
Background
In daily life, industry, science and technology and natural phenomena, heat energy is everywhere, heat energy exists in various ways, heat energy contained in fuel combustion and high-pressure steam belongs to high-grade heat energy and can be directly converted into electric energy or kinetic energy, however, low-grade heat energy is used as all-around visible energy in life, heat in air, heat in seawater, heat in the ground, a large amount of waste heat and waste heat generated in the production process of a factory, heat discharged by automobile exhaust and the like and is low-grade heat energy, and because of low energy quality, the heat energy is generally not regarded by people and is difficult to use.
Moreover, for low-grade heat energy, the current research focus is mainly on semiconductor materials, but the manufacturing materials and processes of semiconductors are complex, doping and cutting are needed, cleaning and purification are needed when high purity is required, and if performance is required, more kinds of elements may be doped, so that the process is more complex and the cost is increased. Moreover, the conversion efficiency of the semiconductor thermoelectric material can reach a relatively high level only at a temperature of 200 ℃ or higher, and the thermoelectric coefficient of the semiconductor thermoelectric power generation sheet is generally relatively low and is generally below 1500 muV/DEG C. In addition, the semiconductor thermoelectric generation piece is made of solid materials and basically only suitable for a heat source with a very flat surface, and the semiconductor thermoelectric generation piece has a cold end and a hot end and must be strictly corresponding to the cold end and the hot end to prevent the position, otherwise, thermoelectric conversion cannot be carried out.
In recent years, in the aspect of energy conversion, research is carried out on thermoelectric conversion by using a nano porous material, the thermoelectric coefficient is generally higher than that of a semiconductor thermoelectric power generation sheet, but the research and the material generally cannot meet the requirement of flexibility and stretchability, the problem of liquid leakage cannot be basically avoided no matter ionic liquid or inorganic salt electrolyte solution is adopted, and the flexibility of a device is difficult to realize.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an all-solid-state flexible thermoelectric conversion device, wherein an electrolyte solution is made into an all-solid-state electrolyte, and then the whole body is sealed by a soft material silicone rubber, so that low-grade heat energy can be recovered and converted, and can be output in the form of electric energy and stored for further utilization.
In order to achieve the purpose, the utility model adopts the following technical scheme: comprises a nano-porous electrode with nano-scale holes, a solid electrolyte, conductive silver paste and two current collectors, the nano-porous electrode adopts a carbon cloth electrode, the nano-porous electrode is bonded on the first current collector through conductive silver paste, the solid electrolyte is prepared by pouring electrolyte solution containing high molecular polymer on the nano-porous electrode, and after the electrolyte solution permeates, the nano-porous electrode, the solid electrolyte, the conductive silver paste, the two current collectors and the lead are formed into a whole and placed in a mould, and one end of the lead extends out of the mould, and a silicon rubber packaging material is poured into the mould to be cured to form the thermoelectric conversion device.
Preferably, the nano-porous electrode adopts a carbon cloth electrode or a carbon cloth electrode carbon nanotube film.
Preferably, the high molecular polymer adopts polyvinyl alcohol, and the electrolyte solution adopts potassium chloride solution with the concentration of 0.05 mol/L.
Preferably, the solid electrolyte is 1-2 mm higher than the surface of the nano porous electrode.
Preferably, the lead is fixed to the current collector by welding or bonding.
Preferably, the material of the current collector is stainless steel foil.
The utility model has the beneficial effects that:
1: all components of the flexible device are flexible and bendable materials, the whole device finally shows flexibility, and in practical application, the problems of component leakage and the like are not considered in the all-solid-state flexible device, so that the safety coefficient is high;
2: the utility model is suitable for various heat sources with curved surfaces, can recover and convert low-grade waste heat energy, and provides a new idea for secondary utilization of energy;
3: according to the utility model, the solid electrolyte is completely immersed in the nano porous electrode, so that the contact area between the electrolyte and the solid electrode is greatly increased;
4: the utility model is soft and light, and is convenient to install, carry and transport.
Drawings
FIG. 1: a schematic diagram of an all-solid-state flexible thermoelectric conversion device.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. In the description of the present invention, it should be noted that the terms "central", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, and are only used for convenience of description and simplification of description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
The first embodiment is as follows: the utility model provides an all-solid-state flexible thermoelectric conversion device, includes nanometer porous electrode 1 (3 cm 3 mm) that have nanometer hole, solid electrolyte 2, electrically conductive silver thick liquid 3 and two mass flow body 4, and nanometer porous electrode 1 adopts the carbon cloth electrode, and nanometer porous electrode 1 bonds on first piece mass flow body 4 through electrically conductive silver thick liquid 3.
The solid electrolyte 2 is prepared by pouring an electrolyte solution containing a high molecular polymer on the nano porous electrode 1, and after the electrolyte solution permeates, performing crosslinking solidification by repeatedly freezing at low temperature and thawing at room temperature, wherein the high molecular polymer is polyvinyl alcohol, and the electrolyte solution is a potassium chloride solution with the concentration of 0.05 mol/L. In this embodiment, the nanoporous electrode 1 must be bonded to the current collector 4 through the conductive silver paste 3, and then the electrolyte solution containing the high molecular polymer is poured onto the nanoporous electrode 1, followed by crosslinking.
When the solid electrolyte 2 is proportioned, firstly, a potassium chloride solution with the concentration of 0.05mol/L is heated to 30 ℃, then, polyvinyl alcohol particles are slowly added, the mass ratio of the polyvinyl alcohol to water in the electrolyte solution is 1:10, the rotating speed of a magnetic stirrer is adjusted to 300r/min, and the mixture is heated to 95 ℃ and stirred for half an hour until the polyvinyl alcohol is completely dissolved.
After the polyvinyl alcohol is completely dissolved in the proportioning process of the solid electrolyte 2, the mixed solution containing the polyvinyl alcohol and the electrolyte solution is cooled to room temperature, the mixed solution is poured onto the surface of the nano-porous electrode 1 bonded on the current collector 4, the mixed solution is completely permeated into the nano-porous electrode 1, and the amount of the mixed solution is increased until the solid electrolyte 2 is 1-2 mm higher than the surface of the nano-porous electrode 1.
In the process of crosslinking the solid electrolyte 2, the nanoporous electrode 1 filled with the mixed solution of the polyvinyl alcohol and the electrolyte solution is firstly put into a refrigerator freezing chamber for freezing crosslinking, taken out after 1 hour, thawed at room temperature, put into the refrigerator freezing chamber after 1 hour, and repeated for 3-4 times, so that the crosslinking of the mixed solution of the polyvinyl alcohol and the electrolyte solution can be realized, and the flexible solid electrolyte 2 is formed.
The second current collector 4 is embedded in the solid electrolyte 2, and the two current collectors 4 are connected with wires 6, wherein the wires 6 are fixed on the current collectors 4 by welding or bonding. The process is as follows: and placing a second current collector 4 on the crosslinked solid electrolyte 2, then pouring a mixed solution containing polyvinyl alcohol and an electrolyte solution on the second current collector 4, reserving a part of the current collector 4, and performing crosslinking and solidification again, so as to fix the second current collector 4 in the solid electrolyte 2.
The nano porous electrode 1, the solid electrolyte 2, the conductive silver paste 3, the two current collectors 4 and the lead 6 are integrally placed in a mold (the space size is 4cm x 6 mm), one end of the lead 6 extends out of the mold, and a silicon rubber packaging material 5 is poured into the mold and cured to form the thermoelectric conversion device. The silicon rubber packaging material 5 is prepared from two components in a ratio of 1:1, then poured into a mold containing a nano porous electrode 1, a solid electrolyte 2, conductive silver paste 3, a current collector 4 and a lead 6, placed into an oven, cured at 60 ℃ for 4 hours, and taken out.
In the present embodiment, the material of the current collector 4 may be a stainless steel foil.
In conclusion, all the components of the flexible device are flexible and bendable materials, the whole device finally shows flexibility, and in practical application, the problems of component leakage and the like are not considered in the all-solid-state flexible device, so that the safety coefficient is high; the heat source recovery device is suitable for various heat sources with curved surfaces, can recover and convert low-grade waste heat energy, and provides a new idea for secondary utilization of energy; meanwhile, the device is soft, light and convenient to install, carry and transport.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The utility model provides an all-solid-state flexible thermoelectric conversion device, its characterized in that, including nanometer porous electrode (1), solid electrolyte (2), electrically conductive silver thick liquid (3) and two mass flow bodies (4) that have the nanometer hole, nanometer porous electrode (1) bonds at first piece through electrically conductive silver thick liquid (3) on the mass flow body (4), solid electrolyte (2) are through pouring the electrolyte solution that contains high-molecular polymer on nanometer porous electrode (1), treat the electrolyte solution infiltration back, through freezing with the room temperature of low temperature repeatedly and unfreeze and carry out the cross-linking solidification gained, the second piece mass flow body (4) embedding is in inside solid electrolyte (2), two all be connected with wire (6) on mass flow body (4), will nanometer porous electrode (1), solid electrolyte (2) electrically conductive silver thick liquid (3), Two the mass flow body (4) with in wire (6) form a whole and arrange the mould in, just the one end of wire (6) stretches out the mould, to pour into silicon rubber packaging material (5) solidification in the mould and form thermoelectric conversion device.
2. The all-solid-state flexible thermoelectric conversion device according to claim 1, wherein the nanoporous electrode (1) employs a carbon cloth electrode or a carbon cloth electrode carbon nanotube film.
3. The all-solid-state flexible thermoelectric conversion device according to claim 1, wherein the high molecular polymer is polyvinyl alcohol, and the electrolyte solution is potassium chloride solution having a concentration of 0.05 mol/L.
4. An all-solid-state flexible thermoelectric conversion device according to claim 1, wherein the solid electrolyte (2) is 1-2 mm higher than the surface of the nanoporous electrode (1).
5. The all-solid-state flexible thermoelectric conversion device according to claim 1, wherein the lead (6) is fixed to the current collector (4) by welding or bonding.
6. An all-solid-state flexible thermoelectric conversion device according to claim 1, wherein the material of the current collector (4) is a stainless steel foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122408759.1U CN215990603U (en) | 2021-10-08 | 2021-10-08 | All-solid-state flexible thermoelectric conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122408759.1U CN215990603U (en) | 2021-10-08 | 2021-10-08 | All-solid-state flexible thermoelectric conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215990603U true CN215990603U (en) | 2022-03-08 |
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ID=80570369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122408759.1U Active CN215990603U (en) | 2021-10-08 | 2021-10-08 | All-solid-state flexible thermoelectric conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215990603U (en) |
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2021
- 2021-10-08 CN CN202122408759.1U patent/CN215990603U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231111 Address after: 471000 Jianxi District, Luoyang City, Henan Province, No. 50 Jianxi Road Patentee after: CHINALCO LUOYANG COPPER PROCESSING CO.,LTD. Address before: 471000 No. 90, Wangcheng Avenue, Luolong District, Luoyang City, Henan Province Patentee before: LUOYANG INSTITUTE OF SCIENCE AND TECHNOLOGY |
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| TR01 | Transfer of patent right |