CN211321253U

CN211321253U - High-efficiency solar photovoltaic-temperature difference hybrid power generation device

Info

Publication number: CN211321253U
Application number: CN202020152712.6U
Authority: CN
Inventors: 张理; 张博诚; 孙霄羽; 赵炳卓; 柳赟
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2020-02-05
Filing date: 2020-02-05
Publication date: 2020-08-21
Anticipated expiration: 2030-02-05

Abstract

The high-efficiency solar photovoltaic-temperature difference hybrid power generation device comprises a light-insulating plate, a photoresistor, a circuit board, a color ring resistor, a solar photovoltaic MPPT controller, a single chip microcomputer, a temperature difference power generation MPPT controller and other components, wherein the photoresistor is embedded on the light-insulating plate, pins penetrate through the light-insulating plate and are welded on the circuit board, the color ring resistor is welded on four corner edges of the circuit board and forms serial partial pressure with the photoresistor, the back of the solar cell panel is fixed on a steering engine, the steering engine is fixed on a support of a bottom plate, the support is located in the middle of the bottom plate, the single chip microcomputer is arranged in the front of the bottom plate, the solar photovoltaic MPPT controller, the temperature difference power generation MPPT controller and a; the hot end of the thermoelectric generation piece is bonded with the back of the solar cell panel by silica gel, the cold end is bonded with one surface of the water cooling block by silica gel, and the other surface of the water cooling block is bonded with the aluminum alloy radiator by silica gel.

Description

High-efficiency solar photovoltaic-temperature difference hybrid power generation device

Technical Field

The utility model relates to a renewable energy technical field specifically is an efficient solar photovoltaic-temperature difference hybrid power generation device.

Background

Since the release and implementation of renewable energy laws of the people's republic of China, the utilization of renewable energy including solar energy, wind energy, biomass energy and the like enters a new historical development period. The solar photovoltaic technology is an important form of solar energy utilization, which utilizes the photoelectric effect of semiconductor materials to directly convert solar energy into electric energy. With the continuous progress of the technology, photovoltaic power generation is probably one of the most promising power generation technologies. Compared with fossil energy and nuclear energy power generation technologies, and simultaneously different from wind energy and biomass energy power generation technologies, photovoltaic power generation has a series of specific advantages, such as: the energy conversion has no intermediate process, and the power generation form is very simple; the solar radiation is inexhaustible; there are no resource shortages and exhaustion problems: the silicon material used mainly has abundant reserves, and is the second most abundant arrangement except oxygen on the earth crust, and reaches as much as 26 percent; the photovoltaic power generation has no combustion process and is environment-friendly; the service life is long, and the income is gained for a plurality of years by one-time investment; the maintenance management is simple, unattended operation can be realized, and the maintenance cost is low.

In order to improve the utilization efficiency of solar energy, researchers have proposed many methods: the solar panel is cooled by air or water to obtain a photovoltaic and photo-thermal comprehensive utilization technology of domestic hot water; the power generation is realized by a method of cracking the methanol fuel by using medium-temperature solar heat energy (220 ℃), the power generation efficiency is indirectly improved, and the like. Researches show that the photovoltaic cell absorbs 4-17% of energy of solar radiation and converts the energy into electric energy, light with shorter wavelength is utilized, the light with longer wavelength is wasted, and the temperature of the cell is increased due to the generated heat energy, so that the efficiency and the service life of the cell are reduced. In recent years, a novel solar hybrid power generation technology integrating photovoltaic power generation and thermoelectric power generation technologies is more and more widely valued.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides an efficient solar photovoltaic-temperature difference hybrid power generation device utilizes integrated photovoltaic power generation and the compound power generation technique of novel solar energy as an organic whole of thermoelectric generation technique to replace single photovoltaic power generation technique to improve the generating efficiency of solar energy, solved if: in summer, the efficiency and the service life of the solar cell panel are greatly influenced due to the fact that the temperature of the solar cell panel is too high; in winter, the solar cell panel generates less electricity due to insufficient illumination; the solar panel has low solar illumination radiation; the output efficiency of the thermoelectric generation is low, and the like.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the high-efficiency solar photovoltaic-temperature difference hybrid power generation device comprises a light-insulating plate, a photoresistor, a circuit board, a color ring resistor, a solar cell panel, a temperature difference power generation sheet, a water cooling block 8, an aluminum alloy radiator 9, a steering engine, a water tank 12, a temperature sensor, a solar photovoltaic MPPT controller, a single chip microcomputer and a temperature difference power generation MPPT controller, and is characterized in that: the photosensitive resistor 2 is embedded on the light-shielding plate 1, pins of the photosensitive resistor penetrate through the light-shielding plate 1 and are welded on the circuit board 3, the color ring resistors are welded on four corner edges of the circuit board 3 and form serial connection voltage division with the photosensitive resistor 2, and the voltage value of the voltage division is input to the analog input port of the singlechip 16; the solar photovoltaic MPPT system comprises a circuit board 3, a solar panel 6, a steering engine 10, a singlechip 16, a heat exchanger 11 and a water tank 12, wherein the circuit board 3 is fixed above the solar panel 6, the back of the solar panel 6 is fixed on the steering engine 10, the steering engine 10 is fixed on a support of a bottom plate, the support is positioned in the middle of the bottom plate, the singlechip 16 is arranged in the front of the bottom plate and is provided with the solar photovoltaic MPPT controller 15, the thermoelectric generation MPPT controller 17 and the temperature sensor (2) 14; the hot end of the thermoelectric generation piece 7 is bonded with the back of the solar cell panel 6 by silica gel, the cold end is bonded with the water cooling block 8 by silica gel, and the other side of the water cooling block 8 is also bonded with the aluminum alloy radiator 9 by silica gel.

Preferably: the solar photovoltaic MPPT controller 15 is connected with the solar panel 6, the used LTC3652 power management chip adopts constant voltage MPPT, the output end of the solar panel 6 is connected with an anti-reverse connection circuit, and if the positive end and the negative end of the output of the solar panel are reverse to the positive end and the negative end of the circuit, the circuit is disconnected with a post-stage circuit; the post-stage circuit takes an LTC3652 chip as a core, compares the output voltage of the solar panel with corresponding reference voltage, and inputs a generated error signal into a chopper, wherein the chopper is a BUCK circuit for realizing DC/DC conversion, the output current of the solar panel is limited by a chopper control circuit, and the solar output voltage is equivalently controlled near a maximum power point so as to maximize the output power of the solar panel.

Preferably: the temperature difference power generation MPPT controller 17 is connected with the temperature difference power generation sheet 7, uses an LTC3652 power management chip and adopts constant voltage MPPT; the output voltage of the temperature difference power generation sheet is compared with corresponding reference voltage, the reference voltage is determined by voltage dividing resistors R6 and R2, a generated error signal is input into a chopper, the chopper is used for completing a BUCK circuit of DC/DC conversion, the output current of the temperature difference power generation sheet 7 is limited by the chopper, the output voltage of the temperature difference power generation sheet 7 is equivalently controlled to be close to a maximum power point, and the output power of temperature difference power generation is maximized.

Preferably: still include the thermal-insulated chamber of solar cell panel, the thermal-insulated chamber of solar cell panel adopts PC sunshine board material, buckles PC sunshine board and is little arch and fix in solar cell panel openly to guarantee its seal.

Preferably: the solar cell panel is characterized by further comprising a pressure applying system, wherein the pressure applying system is composed of a square thin aluminum metal block with through holes arranged at four corners and a bolt fastener, the aluminum metal block is arranged on the back of the aluminum alloy radiator and is connected with the solar cell panel through bolts and nuts.

Preferably: the thermoelectric power generation device also comprises a heat dissipation system, wherein the heat dissipation system consists of a water cooling device and an aluminum alloy radiator and is arranged at the cold end of the thermoelectric power generation sheet; the water cooling device comprises a water cooling block, circulating liquid, a water pump, a pipeline, a water tank and a heat exchanger, wherein the water cooling block is a metal block with a water channel inside, the metal block is made of aluminum, the circulating liquid is used for absorbing heat in the water cooling block and taking away the heat, the water pump pushes the circulating liquid to flow, the pipeline is connected with the water pump, the water cooling block, the water tank and the heat exchanger, and the water cooling block and the heat exchanger are sequentially fixed at the cold ends of the thermoelectric generation pieces through silica gel.

Preferably: the temperature measuring device is characterized by further comprising two temperature measuring modules, wherein one temperature measuring module is fixed on the aluminum metal radiator 9 and used for measuring the temperature of the aluminum metal radiator in real time, the other temperature measuring module is used for measuring the temperature of the environment in real time, the temperature values of the two temperature measuring modules are read by the single chip microcomputer at the same time and are compared, a PWM wave with adjustable duty ratio is output, the driving module is used for driving a motor in the water pump, and the flow speed of circulating liquid is.

(III) advantageous effects

The utility model provides an efficient solar photovoltaic-temperature difference hybrid power generation device. The method has the following beneficial effects:

(1) the solar photovoltaic-temperature difference hybrid power generation device has the advantages that the steering engine holder is placed, the solar panel is fixed on the steering engine holder, the photosensitive voltage division circuit is fixed above solar energy for sampling, sampling signals are sent to the single chip microcomputer, the rotation of the steering engine of the holder is controlled by the single chip microcomputer, the solar panel can move along with the movement of the sun in real time, the sunlight can be perpendicularly irradiated on the solar panel at every moment, and the sunlight radiation quantity of the solar panel is improved.

(2) According to the solar photovoltaic-temperature difference hybrid power generation device, the used LTC3652 power management chip adopts a constant voltage MPPT algorithm, the output current of the solar cell panel and the temperature difference power generation sheet is limited through the DC-DC switch control circuit, and the output voltage of solar energy and temperature difference power generation is equivalently controlled near the maximum power point so as to maximize the output power. The energy utilization rate and the conversion efficiency of solar energy and thermoelectric power generation can be effectively improved.

(3) This solar photovoltaic-temperature difference hybrid power generation device, solar illumination intensity is hour winter, and solar energy power generation is few, through the heat-insulating chamber of solar cell panel reducible solar cell panel surface heat and the loss of air convection, and then improves thermoelectric generation's output, and summer solar illumination intensity is when big, and thermoelectric generation system acts as solar cell panel's cooling device, suitably reduces solar cell panel's face temperature, improves solar cell panel's efficiency.

(4) The solar photovoltaic-temperature difference hybrid power generation device is characterized in that a temperature sensor adopts two DS18B20 temperature measurement modules, one of the two temperature measurement modules is fixed on an aluminum metal radiator to measure the temperature of the aluminum metal radiator in real time, the other temperature measurement module measures the temperature of the environment in real time, the temperature values of the two temperature measurement modules are read by an MSP430F5529 single chip microcomputer and compared to output a PWM wave with adjustable duty ratio, a driving module is used for driving a motor in a water pump to adjust the flow rate of circulating liquid, if the temperature of the aluminum alloy radiator is not greatly different from the ambient temperature, the aluminum alloy radiator can complete the heat dissipation work, the single chip microcomputer outputs a PWM wave with smaller duty ratio to reduce the power loss of the motor of the water pump, if the temperature of the aluminum alloy radiator is higher than the ambient temperature, the aluminum alloy radiator can not complete the heat dissipation work, the water, the flow speed of the circulating liquid is accelerated, the sufficient temperature difference of the cold end and the hot end of the thermoelectric generation piece is ensured, and the thermoelectric generation efficiency is improved.

Drawings

Fig. 1 is a front view of a high-efficiency solar photovoltaic-thermoelectric hybrid power generation device.

Fig. 2 is a left side view of a high-efficiency solar photovoltaic-thermoelectric hybrid power generation device.

FIG. 3 is a top view of a high-efficiency solar photovoltaic-thermoelectric hybrid power generation device.

Fig. 4 is a working principle diagram of photovoltaic MPPT in a high-efficiency solar photovoltaic-thermoelectric hybrid power generation device.

Fig. 5 is a working principle diagram of the thermoelectric generation MPPT in the high-efficiency solar photovoltaic-thermoelectric hybrid power generation device.

Fig. 6 is a circuit diagram of a solar photovoltaic MPPT in a high-efficiency solar photovoltaic-thermoelectric hybrid power generation apparatus.

Fig. 7 is a circuit diagram of an MPPT of a temperature difference power generation sheet in a high-efficiency solar photovoltaic-temperature difference hybrid power generation device.

FIG. 8 is a schematic diagram of a high-efficiency solar photovoltaic-thermoelectric hybrid power generation system.

In the figure: the solar photovoltaic power generation system comprises a light-insulation plate 1, a photoresistor 2, a circuit board 3, a color ring resistor 4, a solar panel heat-insulation cavity 5, a solar panel 6, a thermoelectric generation plate 7, a water cooling block 8, an aluminum alloy radiator 9, a steering engine 10, a heat exchanger 11, a water tank 12, a DS18B20 temperature sensor (1), a DS18B20 temperature sensor (2), a solar photovoltaic MPPT controller 15, a MSP430F5529 single chip microcomputer, a thermoelectric generation MPPT controller 17 and a pressure applying system 18.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The solar power generation module mainly comprises an MPPT controller and an automatic tracking system. The MPPT controller and the self-tracking system are both used for realizing higher efficiency utilization of solar energy. MPPT, i.e., maximum power point tracking, means that a controller can detect the power generation voltage of a solar panel in real time and track the maximum voltage and current value, so that the solar panel charges a storage battery with the highest efficiency. The principle of MPPT control is essentially an automatic dynamic optimization process, in which duty ratio and pulse width modulation signals are changed by comparing power, and thus the workload of the solar cell panel is changed, and the position of an output power point is changed to achieve the optimum. MPPT usually requires a chopper to complete DC/DC conversion, and the chopper circuit is divided into a BUCK circuit and a BOOST circuit. The utility model discloses in utilize the BUCK converter to realize MPPT, through the PWM duty cycle output of adjusting the BUCK converter, make the output impedance of load equivalent impedance following solar PV modules array to make the photovoltaic array all can obtain maximum power output under any condition. The self-tracking system realizes the utilization of solar energy to a greater extent, and ensures that sunlight vertically irradiates on the solar panel at every moment, namely the solar panel must move along with the movement of the sun. The current common self-tracking methods include a constant speed control method, a light intensity control method and a time-space control method. In order to realize the tracking conveniently and achieve a better tracking effect, a constant speed control method and a light intensity control method can be combined. And measures of tight tracking, sparse tracking and no tracking are respectively adopted by comparing the actual light intensity with a set value. The hardware can be realized by a singlechip, a holder, a photoresistor, a color ring resistor and the like.

And the main parts of the thermoelectric generation module are a solar cell panel heat insulation cavity, a thermoelectric generation sheet, a heat dissipation system, a pressure application system, a temperature sensor and an MSP430F5529 singlechip. The utility model discloses select PC sunshine board as the thermal-insulated chamber of solar cell panel, PC sunshine board has high light transmissivity, high heat insulating ability, advantages such as high stability and energy-concerving and environment-protective, buckle PC sunshine board and be little arch and fix at solar cell panel openly, and guarantee its seal, the effect is under the receiving solar radiation condition that does not influence solar cell panel, reduce the solar cell panel surface because the calorific loss that causes of air convection, guarantee the sufficiency of thermoelectric generation piece heat source. The thermoelectric power generation piece can convert heat energy into electric energy by utilizing the migration of carriers in thermoelectric materials, power generation can be carried out as long as the temperature difference exists at the two ends of the thermoelectric power generation piece, the thermoelectric power generation piece is fixed on the back of the solar cell panel by utilizing silica gel, and the hot end of the thermoelectric power generation piece is tightly attached to the cell panel. The cooling system consists of a water cooling device and an aluminum alloy radiator, and is installed at the cold end of the thermoelectric generation piece, and aims to enhance the heat dissipation of the cold end of the thermoelectric generation piece. The pressure application system is composed of a square thin aluminum metal block with through holes at four corners and good heat conduction and a bolt fastener, the aluminum metal block is arranged on the back of the aluminum alloy radiator and is connected with the solar cell panel through a bolt and a nut, and the purpose is to tightly press the temperature difference power generation sheet, the water cooling block and the aluminum alloy radiator between the solar cell panel and the square thin aluminum metal block. The temperature sensor adopts two DS18B20 temperature measurement modules, wherein one of the two DS18B20 temperature measurement modules is fixed on an aluminum metal radiator to measure the temperature of the aluminum metal radiator in real time, the other one of the two DS18B20 temperature measurement modules measures the temperature of the environment in real time, the MSP430F5529 single chip microcomputer simultaneously reads the temperature values of the two temperature measurement modules and compares the temperature values to output a PWM wave with adjustable duty ratio, and the driving module is used for driving a motor in a water pump to adjust the flow rate.

Examples

Referring to fig. 1-3, four photo resistors 2 are embedded in a light-shielding plate 1, pins penetrate through the light-shielding plate 1 and are welded on a circuit board 3, four color ring resistors 4 are welded on four corner edges of the circuit board 3 and form serial partial voltages with the four photo resistors 2, the voltage values of the four partial voltages are input into four analog input ports of an MSP430F5529 single chip microcomputer 16, the MSP430F5529 single chip microcomputer 16 processes four sampling data to send two paths of PWM waves to respectively control the rotation angle of a steering engine 10, so that the solar panel moves along with the movement of the sun, and the sunlight is guaranteed to vertically irradiate on the solar panel at every moment. The circuit board 3 is fixed in solar cell panel 6 top, and the steering wheel 10 is fixed on the steering wheel 10 at the solar cell panel 6 back, and steering wheel 10 is fixed on the support of bottom plate, and the support is in the position between two parties of bottom plate, and MSP430F5529 singlechip 16 places at the bottom plate front portion, and has placed solar photovoltaic MPPT controller 15, thermoelectric generation MPPT controller 17 and DS18B20 temperature sensor (2)14 side by side, and heat exchanger 11 and water tank 12 are placed to the bottom plate rear portion. Referring to fig. 8, the hot end of the thermoelectric generation piece 7 is bonded to the back of the solar cell panel 6 by silica gel to absorb heat of the solar cell panel 6, the cold end of the thermoelectric generation piece 7 is bonded to the water cooling block 8 by silica gel, the other side of the water cooling block 8 is also bonded to the aluminum alloy radiator 9 by silica gel, the cold end of the thermoelectric generation piece 7 is maintained at a low temperature by water cooling and radiator heat dissipation to ensure that the thermoelectric generation is output at a large output power, the DS18B20 temperature sensor (1)13 is placed on the aluminum alloy radiator 9, the DS18B20 temperature sensor (2)14 is exposed to the environment to detect the ambient temperature, the MSP430F5529 single chip microcomputer 16 reads the values of the two temperature sensors and compares the values, outputs a PWM signal to control the output power of the water pump in the water tank 12, the electric energy loss is controlled while the water cooling effect is ensured, the heat exchanger 11 and the water tank 12 function to dissipate heat in the circulating liquid, and the pressure, Water-cooling piece 8 and aluminum alloy radiator 9 compress tightly, reduce the loss of heat in the course of the transmission, increase the output of thermoelectric generation piece, in winter, install solar cell panel heat-insulating chamber 5 on solar cell panel 6, the loss of 6 surperficial heats of reducible solar cell panel and air convection, and then improve thermoelectric generation's output, summer solar illumination intensity is when big, 6 face temperatures of solar cell panel are high, then do not install solar cell panel heat-insulating chamber 5, thermoelectric generation system acts as solar cell panel 6's cooling device, suitably reduce solar cell panel's face temperature, improve solar cell panel's efficiency.

The working principle is as follows:

referring to fig. 4-7, a solar photovoltaic MPPT controller 15 is connected to a solar panel 6, a constant voltage MPPT algorithm is adopted for a used LTC3652 power management chip, an output terminal of the solar panel 6 is connected to an anti-reverse connection circuit, if a positive terminal and a negative terminal of an output of the solar panel are reversed with a positive terminal and a negative terminal of a circuit, the circuit is disconnected with a following circuit to play a role of protecting the chip, the following circuit is a circuit which is formed by externally connecting necessary components with an LTC3652 chip, the circuit compares a solar panel output voltage VSOLAR with a corresponding reference voltage VIN REG, a generated error signal is input into a chopper, the chopper completes DC/DC conversion, the chopper circuit is a circuit which is formed by the LTC3652 chip and externally connected L2, C1, D bu 2, D4, C7 and C8, L2 plays a role of energy storage, D2 plays a role of follow current, C1 is a bootstrap capacitor, D4 is a bootstrap diode, and C7 and C8 are connected in parallel, the output voltage is determined by R16 and R22, the maximum output current is determined by R10, the output current of the solar panel is limited by a DC-DC switch control circuit, the solar output voltage is equivalently controlled to be near the maximum power point so as to maximize the output power of the solar panel, a temperature difference power generation MPPT controller 17 is connected with a temperature difference power generation sheet 7, the used LTC3652 power supply management chip adopts a constant voltage MPPT algorithm, an LTC3652 chip is taken as a core, and a circuit consisting of necessary components is externally connected, the circuit compares the output voltage of the temperature difference power generation sheet with a corresponding reference voltage REG VIN, the reference voltage REG is determined by a voltage dividing resistor R6 and a voltage dividing resistor R2, the generated error signal is input into a chopper to complete DC/DC conversion, the chopper circuit is a BUCK circuit consisting of the LTC3652 chip, an external inductor, a capacitor and a diode, the output voltage is determined by R3 and R8, the maximum output current is determined by R5, the output current of the thermoelectric generation sheet 7 is limited through the DC-DC switch control circuit, and the output voltage of the thermoelectric generation sheet 7 is equivalently controlled near the maximum power point, so that the output power of the thermoelectric generation is maximized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The high-efficiency solar photovoltaic-temperature difference hybrid power generation device comprises a light-insulating plate, a photosensitive resistor, a circuit board, a color ring resistor, a solar cell panel, a temperature difference power generation sheet, a water cooling block, an aluminum alloy radiator, a steering engine, a water tank, a temperature sensor, a solar photovoltaic MPPT controller, a single chip microcomputer and a temperature difference power generation MPPT controller, and is characterized in that: the photosensitive resistor is embedded on the light-isolating plate, pins of the photosensitive resistor penetrate through the light-isolating plate and are welded on the circuit board, the color ring resistors are welded on four corner edges of the circuit board and form serial voltage division with the photosensitive resistor, and the voltage value of the voltage division is input to the analog input port of the single chip microcomputer; the solar photovoltaic MPPT system comprises a circuit board, a steering engine, a singlechip, a solar photovoltaic MPPT controller, a thermoelectric generation MPPT controller and a temperature sensor, wherein the circuit board is fixed above a solar cell panel, the back surface of the solar cell panel is fixed on the steering engine, the steering engine is fixed on a support of a bottom plate, the support is positioned in the middle of the bottom plate, the singlechip is arranged in the front of the bottom plate, the solar photovoltaic MPPT controller, the thermoelectric generation MPPT controller and the; the hot end of the thermoelectric generation piece is bonded with the back of the solar cell panel by silica gel, the cold end is bonded with one surface of the water cooling block by silica gel, and the other surface of the water cooling block is bonded with the aluminum alloy radiator by silica gel.

2. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: the solar photovoltaic MPPT controller is connected with a solar panel, an LTC3652 power management chip is used, constant voltage MPPT is adopted, the output end of the solar panel is connected with an anti-reverse connection circuit, and if the positive end and the negative end of the output of the solar panel are reverse to the positive end and the negative end of the circuit, the circuit is disconnected with a post-stage circuit; the post-stage circuit takes an LTC3652 chip as a core, compares the output voltage of the solar panel with corresponding reference voltage, and inputs a generated error signal into a chopper, wherein the chopper is a BUCK circuit for realizing DC/DC conversion, the output current of the solar panel is limited by a chopper control circuit, and the solar output voltage is equivalently controlled near a maximum power point so as to maximize the output power of the solar panel.

3. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: the temperature difference power generation MPPT controller is connected with the temperature difference power generation sheet, and the controller uses an LTC3652 power management chip and adopts constant voltage MPPT; the output voltage of the temperature difference power generation sheet is compared with the reference voltage inside the LTC3652 chip, the generated error signal is input into a direct current chopper, the direct current chopper is a DC/DC conversion BUCK circuit, the output current of the temperature difference power generation sheet can be limited, the output voltage of the temperature difference power generation sheet is equivalently controlled to be close to the maximum power point, and the output power of temperature difference power generation is maximized.

4. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: still include the thermal-insulated chamber of solar cell panel, the thermal-insulated chamber of solar cell panel adopts PC sunshine board material, buckles PC sunshine board and is little arch and fix in solar cell panel openly to guarantee its seal.

5. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: the solar cell panel is characterized by further comprising a pressure applying system, wherein the pressure applying system is composed of a square aluminum metal block with through holes arranged at four corners and a bolt fastener, the aluminum metal block is arranged on the back of the aluminum alloy radiator and is connected with the solar cell panel through bolts and nuts.

6. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: the thermoelectric power generation device also comprises a heat dissipation system, wherein the heat dissipation system consists of a water cooling device and an aluminum alloy radiator and is arranged at the cold end of the thermoelectric power generation sheet; the water cooling device comprises a water cooling block, circulating liquid, a water pump, a pipeline, a water tank and a heat exchanger, wherein the water cooling block is a metal block with a water channel inside and is made of aluminum, the circulating liquid is used for absorbing and taking away heat in the water cooling block, the water pump pushes the circulating liquid to flow, and the pipeline is connected with the water pump, the water cooling block, the water tank and the heat exchanger; the water cooling block and the heat exchanger are sequentially fixed at the cold end of the thermoelectric generation piece by utilizing silica gel.

7. The high-efficiency solar photovoltaic-thermoelectric hybrid power generation device according to claim 1, wherein: the temperature measuring device is characterized by further comprising two temperature measuring modules, wherein one temperature measuring module is fixed on the aluminum metal radiator and used for measuring the temperature of the aluminum metal radiator in real time, the other temperature measuring module is used for measuring the temperature of the environment in real time, the temperature values of the two temperature measuring modules are read by the single chip microcomputer at the same time and are compared, a PWM wave with adjustable duty ratio is output, the driving module is used for driving a motor in the water pump, and the flow speed of circulating liquid is.