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Photoelectric and thermoelectric combined device

A technology of combined heat and power and thermoelectric devices, which is applied in the direction of thermoelectric device lead-out wire materials, electrical components, photovoltaic power generation, etc. Problems such as the industrial production of low-temperature thermoelectric conversion materials and the limited reserves of semiconductor-type thermoelectric conversion materials have achieved the effects of facilitating industrial application, improving photoelectric conversion efficiency and life, and making production simple

Active Publication Date: 2022-05-13
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the combination of solar cells and thermoelectric conversion batteries still faces challenges. The main problem is that the current mainstream thermoelectric conversion materials—semiconductor thermoelectric materials are expensive, which leads to high costs of thermoelectric conversion batteries and hinders their industrialization.
In addition, the thermoelectric figure of merit (ZT value) and thermoelectric conversion efficiency of semiconductor thermoelectric conversion materials in the low temperature region are still relatively low, which cannot effectively improve the overall utilization efficiency of solar energy for solar-thermoelectric conversion combined cells.
In addition, the limited reserves of semiconductor-type thermoelectric conversion materials further limit the industrial production of semiconductor-type thermoelectric conversion materials.

Method used

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  • Photoelectric and thermoelectric combined device
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  • Photoelectric and thermoelectric combined device

Examples

Experimental program
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Embodiment 1

[0047] The schematic diagram of the structure of the photoelectric and thermoelectric device in this example is as follows figure 1 As shown, it includes a photoelectric conversion cell 2, a first support layer 1, a thermoelectric conversion cell, a second support layer 6, and a heat sink 5 stacked in sequence; the first support layer 1 is connected to the hot end of the thermoelectric conversion cell; the thermoelectric conversion cell The cold end is connected to the second support layer 6, the thickness of the first support layer 1 and the second support layer 6 are both 2 mm, and both the first support layer 1 and the second support layer 6 are carbon cloth. The photoelectric conversion cell 2 is a monocrystalline silicon cell; the thermoelectric conversion cell includes a thermoelectric device array, and the thermoelectric device includes a P-type thermoelectric device 3 and an N-type thermoelectric device 4; the P-type thermoelectric device 3 and the N-type thermoelectric...

Embodiment 2

[0050] The combined photoelectric and thermoelectric device in this example includes a photoelectric conversion cell 2, a first support layer 1, a thermoelectric conversion cell, a second support layer 6, and a radiator 5 that are stacked in sequence; the first support layer 1 and the thermoelectric conversion cell The hot end connection; the cold end of the thermoelectric conversion battery is connected to the second support layer 6, the thickness of the first support layer 1 and the second support layer 6 is 2mm, and the first support layer 1 and the second support layer 6 are both carbon cloth. The photoelectric conversion cell 2 is a monocrystalline silicon cell; the thermoelectric conversion cell includes a thermoelectric device array, and the thermoelectric device includes a P-type thermoelectric device 3 and an N-type thermoelectric device 4; the P-type thermoelectric device 3 and the N-type thermoelectric device 4 are arranged side by side; the P-type thermoelectric dev...

Embodiment 3

[0052] The combined photoelectric and thermoelectric device in this example includes a photoelectric conversion cell 2, a first support layer 1, a thermoelectric conversion cell, a second support layer 6, and a radiator 5 that are stacked in sequence; the first support layer 1 and the thermoelectric conversion cell The hot end connection; the cold end of the thermoelectric conversion battery is connected to the second support layer 6, the thickness of the first support layer 1 and the second support layer 6 is 2mm, and the first support layer 1 and the second support layer 6 are both carbon cloth. The photoelectric conversion cell 2 is a monocrystalline silicon cell; the thermoelectric conversion cell includes a thermoelectric device array, and the thermoelectric device includes a P-type thermoelectric device 3 and an N-type thermoelectric device 4; the P-type thermoelectric device 3 and the N-type thermoelectric device 4 are arranged side by side; the P-type thermoelectric dev...

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Abstract

The photoelectric and thermoelectric combined device comprises a photoelectric conversion battery, a first supporting layer, a thermoelectric conversion battery, a second supporting layer and a radiator which are arranged in a stacked mode. The thermoelectric conversion battery comprises a thermoelectric device array, and the thermoelectric device array is connected in series and conducted through a first supporting layer and a second supporting layer. The thermoelectric device is formed by packaging a thermoelectric material, the thermoelectric material comprises gel, and the gel contains cations and anions. The thermoelectric conversion battery is driven to generate power by utilizing the temperature difference between the internal environment and the external environment of the photoelectric conversion battery, so that the working temperature of the photoelectric conversion battery is reduced, the photoelectric conversion efficiency of the photoelectric conversion battery assembly is improved, the service life of the photoelectric conversion battery assembly is prolonged, and the overall utilization rate of a photoelectric-thermoelectric combined device on solar energy is improved. In addition, the thermoelectric conversion battery adopts a gel thermoelectric material containing cations and anions, and has the advantages of high thermoelectric conversion efficiency, high output voltage and high output power in a low-temperature region.

Description

technical field [0001] The invention belongs to the field of power generation, and in particular relates to a combined photoelectric and thermoelectric device. Background technique [0002] Solar energy is a non-polluting renewable energy source. The use of solar power generation has low emissions and is sustainable. However, there are still some problems in the practical application of solar power generation technology, such as: the energy conversion efficiency is not high. At present, the energy conversion efficiency of solar power generation technology is about 20 %, more than 70% of the solar energy is wasted, and most of the unused solar energy is absorbed by the solar cell and converted into heat energy, which leads to an increase in the temperature of the solar cell and reduces the power generation efficiency, output power and service life of the solar cell. The temperature coefficient of current, voltage and power of solar cells is generally -0.25~-0.4% / °C. The highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0525H01L35/32H01L35/24H10N10/17H10N10/856
CPCH01L31/0525H10N10/856H10N10/17Y02E10/50
Inventor 曾炜戴永强石超生
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI