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Power generation system of hybrid energy sources based on photovoltaic effect, and thermoelectric effect of solar energy

A solar photovoltaic and thermoelectric effect technology, applied in photovoltaic power generation, photovoltaic power stations, light radiation generators, etc., can solve the problems of inability to obtain load operating voltage and current, reduce operational complexity, avoid output power reduction, and solve heat dissipation problem effect

Inactive Publication Date: 2007-05-09
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0008] The purpose of this invention is to overcome the shortcomings of the existing thermoelectric power generation technology that cannot obtain the working voltage and current required by the load at a relatively low temperature difference, and propose a new hybrid energy system composed of solar photovoltaic cells and semiconductor thermoelectric power generation modules
[0009] The invention adds insulating and heat-conducting ceramics to the thermoelectric power generation module, connects the photovoltaic cell and the thermoelectric power generation module with insulating and heat-conducting silica gel, separates the charged photovoltaic cell from the thermoelectric generator, and solves the problems of insulation and heat transfer

Method used

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  • Power generation system of hybrid energy sources based on photovoltaic effect, and thermoelectric effect of solar energy
  • Power generation system of hybrid energy sources based on photovoltaic effect, and thermoelectric effect of solar energy
  • Power generation system of hybrid energy sources based on photovoltaic effect, and thermoelectric effect of solar energy

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Embodiment Construction

[0024] Figure 2 is a schematic diagram of the structure of a solar photovoltaic cell. The sunlight passes through the antireflection film [102] and shines on the semiconductor P[104] and N[103] junctions to form new hole-electron pairs. Under the action of the junction electric field, the holes Flow from the N region to the P region, electrons flow from the P region to the N region, and the current can be output after the upper electrode [101] and the lower electrode [105] are connected to the circuit. The working voltage of a pair of P-N junctions is about 0.45~0.5V, and the working current is about 20~25mA / cm 2 .

[0025] Fig. 3 is a schematic structural diagram of a semiconductor thermoelectric power generation module. In the loop composed of N-type [204] and P[205] semiconductors in series, the temperature of the hot-end insulating heat-conducting plate [202] is higher than that of the cold-end insulating heat-conducting plate [201]. Driven by the carrier concentration gr...

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Abstract

The system mainly consists of the solar energy photo-volt battery (PV) and the semi-conductor thermo electric generator module (SG). The hot end insulated heat-lead board of SG contacts with the bottom electrode of PV via the heat-lead silica gel. PV and SG connect to the power supply circuit via a lead. The hot end insulated heat-lead board of SG contacts with the radiator via the heat-lead silica gel. The energy produced by PV and the energy output by SG and boosted by a DC / DC circuit are stored respectively into the different lithium ion batteries. Via control and distribution by the consequent power circuit, these energies are converted into the DC working voltage. The invention utilizes fully the low-level heat energy and solves the problem of PV performance under hi temperature. The invention raises the generating efficiency and extends PV life.

Description

technical field [0001] The invention relates to a hybrid energy generation system, in particular to a hybrid energy generation system based on solar photovoltaic effect and thermoelectric effect. Background technique [0002] Solar photovoltaic cells are devices that convert light energy into electrical energy by the photoelectric effect. The working principle of photovoltaic cells is: sunlight shines on the semiconductor P-N junction to form hole-electron pairs. Flowing to the P region, electrons flow from the P region to the N region, and a current is formed after the circuit is turned on. Different output voltages can be obtained by changing the series-parallel connection of the PN junction, and different output powers can be obtained by changing the area of ​​the photovoltaic cell. It is a clean, renewable energy source. [0003] At present, silicon-based solar cells are mainly put into large-scale commercial applications. The surface of silicon-based photovoltaic cell...

Claims

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Application Information

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IPC IPC(8): H02J7/35H02N6/00H02N11/00H02S10/30
CPCY02E10/566Y02E10/56
Inventor 尚永红李艳秋
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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