A thermoelectric energy conversion device for photovoltaic panels on the roof of a substation

Abstract

The present invention discloses a thermoelectric energy conversion device for photovoltaic panels on the roof of a substation, comprising a thermal energy unit, which includes a photovoltaic component and a liquid cooling component arranged on the inner side of the photovoltaic component, a first conversion unit which includes a conveying component arranged on the liquid cooling component, a valve component arranged on the conveying component, and a movable component arranged on the conveying component, and a second conversion unit which includes a rotor arranged on the movable component and a power generation component arranged on the rotor. The device can prevent the photovoltaic component from working at ultra-high temperature, improve the working efficiency of the photovoltaic panel, and reduce the probability of damage to the components of the photovoltaic component; convert the collected thermal energy into usable electrical energy, which is also a comprehensive utilization of solar light energy and thermal energy, improves the utilization efficiency of energy, is convenient and flexible to apply, and at the same time makes the output energy more stable and continuous through module combination.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoelectric conversion devices, and in particular to a thermoelectric energy conversion device of photovoltaic panels on a roof of a transformer substation. Background Art

[0002] In order to thoroughly implement the energy security strategy, practice the "carbon peak and carbon neutrality" goals, and implement the "14th Five-Year Plan" new power system construction requirements, many power supply companies are now actively developing rooftop photovoltaic resources, making full use of newly built integrated energy stations, existing substations, power supply stations, logistics houses and other company-owned building facilities rooftop resources, and orderly promoting the construction of rooftop photovoltaic projects.

[0003] However, it is well known that the normal operating temperature of photovoltaic modules is higher than the ambient temperature. Under extreme high temperature conditions caused by continuous exposure to sunlight, the module temperature of a photovoltaic power station can reach over 75°C, and the operating temperature of the internal cells may be even higher. According to existing basic testing conditions, the maximum temperature for photovoltaic module testing is generally set at 85°C. However, in some extremely hot weather, the module operating temperature may exceed this maximum temperature. Data shows that the open-circuit voltage of a single solar cell decreases with increasing temperature. With a voltage temperature coefficient of -0.33% / °C, the open-circuit voltage of a single solar cell in a 60-cell module decreases by 120-125mV for every 1°C increase in temperature. The short-circuit current of solar cells also increases with temperature. Another cell parameter to consider is peak power, which decreases with increasing temperature. For every 1°C increase in the ambient temperature of the cell installation, the peak power loss rate of the solar cell is approximately 0.41%. Therefore, to avoid the thermal problems caused by prolonged exposure of photovoltaic panels to direct sunlight, which can lead to unstable energy output during the subsequent energy conversion process, a thermoelectric energy conversion device with photovoltaic panels on the substation roof is proposed. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] The present invention is proposed in view of the fact that the above-mentioned existing substation rooftop photovoltaic panel thermoelectric energy conversion device has heat problems caused by the photovoltaic panels that collect light energy being exposed to direct sunlight for a long time and the problem of unstable energy output during the subsequent energy conversion process.

[0006] Therefore, the object of the present invention is to provide a photovoltaic panel thermoelectric energy conversion device on the roof of a substation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: a thermal energy unit, which includes a photovoltaic module and a liquid cooling module arranged inside the photovoltaic module;

[0008] a first conversion unit, comprising a conveying assembly disposed on the liquid-cooling assembly, a valve assembly disposed on the conveying assembly, and a movable assembly disposed on the conveying assembly; and

[0009] The second conversion unit includes a rotor arranged on the movable component and a power generation component arranged on the rotor.

[0010] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the photovoltaic assembly includes a solar photovoltaic panel and a panel bracket arranged at the lower end of the solar photovoltaic panel.

[0011] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the liquid cooling assembly includes a liquid cooling tube arranged on the rear side of the solar photovoltaic panel, a condensate arranged in the inner cavity of the liquid cooling tube, a fixing bracket arranged on the liquid cooling tube, and a fixing rivet arranged on the fixing bracket.

[0012] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the liquid cooling tube is made of heat-absorbing glass, and 0.5% iron, 0.5% aluminum, 0.5% cadmium, and 0.5% copper are added to the glass, and the liquid cooling tube is arranged in a U shape.

[0013] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the condensate in the inner cavity of the liquid cooling tube is set to 50% ethanol liquid, 20% n-pentane liquid, 10% high-purity distilled water, 10% pH stabilizer, 5% n-hexane liquid, and 5% ethylene glycol coolant, and the fixing bracket and fixing rivets arranged on the outside of the liquid cooling tube are made of iron-carbon alloy material.

[0014] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the conveying component includes a liquid infusion pipeline arranged at the output end of the liquid cooling pipe, a gas-liquid tank arranged at the other end of the liquid infusion pipeline, and a support frame arranged at the lower end of the gas-liquid tank.

[0015] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the valve assembly includes a valve body shaft arranged between the gas-liquid tank and the movable assembly, a tantalum-hafnium carbide alloy arranged on the inner core on one side of the valve body shaft, graphite arranged on the inner core on the other side of the valve body shaft, a dielectric partition layer arranged between the tantalum-hafnium carbide alloy and the graphite, and a silicone coating arranged on the outside of the valve body shaft, the tantalum-hafnium carbide alloy and the graphite.

[0016] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the movable component includes a piston chamber arranged on the gas-liquid chamber and the valve assembly, a piston arranged in the inner cavity of the piston chamber, a fastening component arranged on the piston, a first piston rod fixedly installed with the piston through the fastening component, and a second piston rod arranged at the upper end of the first piston rod.

[0017] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the fastening component includes a semi-arc seat disc arranged on the piston, the semi-arc seat disc is provided with two jacks arranged on the semi-arc seat disc, stud bolts arranged on the semi-arc surface of the semi-arc seat disc, and fastening nuts arranged at both ends of the stud bolts.

[0018] As a preferred solution of the substation rooftop photovoltaic panel thermoelectric energy conversion device described in the present invention, the power generation component includes a DC generator arranged on the runner, a boost circuit module and a charging management module arranged on the DC generator, and a lithium battery energy storage module arranged at the output end of the DC generator.

[0019] The beneficial effects of the present invention are as follows: by utilizing the characteristic that the boiling point of the condensate is close to the critical temperature of normal operation of the photovoltaic module, on the one hand, it can prevent the photovoltaic module from working at ultra-high temperature, improve the working efficiency of the photovoltaic panel, and reduce the probability of damage to the components of the photovoltaic module; on the other hand, by utilizing a device structure similar to that of a steam generator, the collected thermal energy is converted into usable electrical energy, which is also a comprehensive utilization of solar light and thermal energy, improves the utilization efficiency of energy, and is convenient and flexible to use. At the same time, the output energy is made more stable and continuous through the combination of modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation according to the present invention.

[0022] Figure 2 This is a schematic diagram of the liquid cooling component structure of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation according to the present invention.

[0023] Figure 3 This is a schematic diagram of the valve assembly structure of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation according to the present invention.

[0024] Figure 4 This is a schematic diagram of the fastening component structure of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation according to the present invention.

[0025] Figure 5 This is a schematic diagram of the power generation component structure of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation of the present invention.

[0026] Figure 6 This is a schematic diagram of the DC-AC boost circuit module of the substation rooftop photovoltaic panel thermoelectric energy conversion device of the present invention.

[0027] Figure 7 This is a structural diagram of the charging management module of the photovoltaic panel thermoelectric energy conversion device on the roof of a substation according to the present invention. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0031] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0032] Example 1

[0033] Reference Figure 1-2 , which is the first embodiment of the present invention, provides a substation rooftop photovoltaic panel thermoelectric energy conversion device, which includes a thermal energy unit 100, which includes a photovoltaic component 101 and a liquid cooling component 102 arranged inside the photovoltaic component 101.

[0034] The photovoltaic assembly 101 includes a solar photovoltaic panel 101 a and a panel bracket 101 b disposed at the lower end of the solar photovoltaic panel 101 a .

[0035] Furthermore, the liquid cooling assembly 102 includes a liquid cooling tube 102a arranged on the rear side of the solar photovoltaic panel 101a, condensate 102b arranged in the inner cavity of the liquid cooling tube 102a, a fixing bracket 102c arranged on the liquid cooling tube 102a, and a fixing rivet 102d arranged on the fixing bracket 102c.

[0036] Furthermore, the liquid cooling tube 102a is made of heat-absorbing glass, and 0.5% iron, 0.5% aluminum, 0.5% cadmium, and 0.5% copper are added to the glass. The liquid cooling tube 102a is set into a U shape, so that the liquid cooling tube 102a has better thermal conductivity and can absorb heat energy from the solar photovoltaic panel 101a more efficiently and quickly. The condensate 102b in the inner cavity of the liquid cooling tube 102a is set to 50% ethanol liquid, 20% n-pentane liquid, 10% high-purity distilled water, 10% pH stabilizer, 5% n-hexane liquid, and 5% ethylene glycol coolant. The customized condensate 102b has the characteristics of being volatile, easy to liquefy, chemically stable, non-flammable, and reusable many times. The fixing bracket 102c and fixing rivet 102d arranged on the outside of the liquid cooling tube 102a are made of iron-carbon alloy material.

[0037] During use, the solar photovoltaic panel 101a is supported and fixed by the panel bracket 101b, so that the tilted solar photovoltaic panel 101a can stably receive solar energy for a long time. At the same time, the liquid cooling tube 102a with good thermal conductivity is designed to be U-shaped, which increases the surface contact area between the liquid cooling tube 102a and the solar photovoltaic panel 101a, so that it can absorb the heat energy on the solar photovoltaic panel 101a more efficiently, and the solar photovoltaic panel 101a can effectively dissipate heat. The combination of the fixing bracket 102c and the fixing rivet 102d can stably install the liquid cooling tube 102a on the solar photovoltaic panel 101a. At the same time, the condensate 102b in the liquid cooling tube 102a absorbs heat energy and transfers the heat energy to subsequent components, so that the subsequent components can effectively convert heat energy.

[0038] Example 2

[0039] Reference Figure 1-4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the first conversion unit 200 includes a conveying component 201 arranged on the liquid cooling component 102, a valve component 202 arranged on the conveying component 201, and a movable component 203 arranged on the conveying component 201.

[0040] Compared with Example 1, the conveying component 201 further includes a liquid infusion pipe 201a arranged at the output end of the liquid cooling pipe 102a, a gas-liquid tank 201b arranged at the other end of the liquid infusion pipe 201a, and a support frame 201c arranged at the lower end of the gas-liquid tank 201b. The condensate 102b after passing through the liquid cooling pipe 102a carries the absorbed heat energy and is transported to the gas-liquid tank 201b through the liquid infusion pipe 201a. The gas formed after the condensate 102b is vaporized due to the high temperature, the unvaporized liquid, and the liquid refluxed after cooling above are all stored in the gas-liquid tank 201b.

[0041] Furthermore, the valve assembly 202 includes a valve body shaft 202a disposed between the gas-liquid tank 201b and the movable assembly 203, a tantalum-hafnium carbide alloy 202b disposed on the inner core of one side of the valve body shaft 202a, a graphite 202c disposed on the inner core of the other side of the valve body shaft 202a, a medium partition layer 202d disposed between the tantalum-hafnium carbide alloy 202b and the graphite 202c, and a silicone coating 202e disposed on the outer sides of the valve body shaft 202a, the tantalum-hafnium carbide alloy 202b and the graphite 202c. Both the tantalum-hafnium carbide alloy 202b and the graphite 202c have high temperature resistant material properties but are different in density. There is a big difference. The density of tantalum carbide hafnium alloy 202b is much greater than that of graphite 202c material. There is an obvious quality difference under the same volume. Combined with the designed shape and size of the valve assembly 202, the horizontal posture in the normal state is lifted up by the air pressure, so that it will only present a physical posture with the valve body shaft 202a as the axis, with the left valve assembly 202 upward and the right valve assembly 202 downward. When the steam liquefied gas pressure in the piston chamber 203a returns to normal, the valve assembly 202 will return to the horizontal posture due to the quality difference and gravity. The outer layer of the entire valve assembly 202 is coated with silicone 202e, which can reduce liquid and air leakage.

[0042] Furthermore, the movable component 203 includes a piston chamber 203a arranged on the gas-liquid chamber 201b and the valve assembly 202, a piston 203b arranged in the inner cavity of the piston chamber 203a, a fastening component 203c arranged on the piston 203b, a first piston 203b rod fixedly installed with the piston 203b through the fastening component 203c, and a second piston rod 203e arranged at the upper end of the first piston rod 203d.

[0043] The fastening component 203c includes a semi-arc seat disc 203c-1 provided on the piston 203b. The semi-arc seat disc 203c-1 is provided with two sockets 203c-2 provided on the semi-arc seat disc 203c-1, stud bolts 203c-3 provided on the semi-arc surface of the semi-arc seat disc 203c-1, and fastening nuts 203c-4 provided at both ends of the stud bolts 203c-3. The two semi-arc seat discs 203c-1 are fixed according to the diameter of the first piston 203b rod. The first piston rod 203d is placed on the upper end of the piston 203b and is fixed to the piston 203b through the holes 203c-2 on both sides of the bottom. The first piston rod 203d is inserted between the semi-arc seat plates 203c-1, and the stud bolts 203c-3 are inserted horizontally. The two ends are fixed by fastening nuts 203c-4, so that the first piston rod 203d is fixed to the piston 203b through the fastening component 203c, and the second piston rod 203e is rotatably connected to the other end of the first piston rod 203d.

[0044] The remaining structures are the same as those of Example 1.

[0045] During use, the infusion pipe 201a, the gas-liquid tank 201b, the valve assembly 202, and the piston tank 203a are made of wired glass, which has excellent fire resistance, can block flames, will not explode when burned at high temperatures, and will not cause fragments to hurt people when broken. It has extremely high physical strength, which can minimize the safety hazards caused by the expansion of the condensate 102b gas. At the same time, the infusion pipe 201a, the gas-liquid tank 201b, and the piston tank 203a are all sealed with a silicone coating 202e on the inner layer, and the maximum temperature resistance is up to 400°C, which can be actually used in real working environments. It also has the advantages of light weight, high strength, good transparency and sealing, non-toxicity, and odorlessness, which can ensure that the entire reaction environment meets the sealed, stable, and safe working standards. When the condensate 10 After 2b absorbs heat and vaporizes into steam and expands in volume, it is transmitted through the infusion pipe 201a, and then the left end of the valve assembly 202 is lifted to discharge the expanded gas. After the gas enters the piston chamber 203a, the pressure generated by the volume compression acts on the piston 203b, pushing the piston 203b and the first piston rod 203d connected to it upward. When the gas in the piston chamber 203a is liquefied into liquid due to the release of energy, the piston 203b and the first piston rod 203d connected to it move downward due to gravity. Due to the sealing design, the liquefied liquid will return to the gas-liquid chamber 201b through the valve assembly 202 opened on the left in the next cycle, realizing the effect of vaporizing heat energy and pushing the piston 203b to reciprocate through the valve assembly 202.

[0046] Example 3

[0047] Reference Figure 1-7, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the second conversion unit 300 includes a runner 301 arranged on the movable component 203, and a power generation component 302 arranged on the runner 301. The other end of the second piston rod 203e is movably connected to the runner 301. When the second piston rod 203e moves, it can drive the runner 301 to rotate.

[0048] Compared with Example 2, the power generation component 302 further includes a DC generator 302a arranged on the wheel 301, a DC-AC boost circuit module 302b and a charging management module 302c arranged on the DC generator 302a, and a lithium battery energy storage module 302d arranged at the output end of the DC generator 302a.

[0049] The DC-AC boost circuit module 302b uses the WD5220L chip, which provides high-precision constant voltage and constant current output performance. In constant voltage output mode, the WD5220L employs a multi-mode operation, combining amplitude modulation (AM) and frequency modulation (FM), improving system efficiency and reliability. In constant current output mode, the chip uses frequency modulation control and integrates constant current compensation for line and load voltage. The 5220L eliminates abnormal operating noise while ensuring excellent dynamic performance. The integrated line loss compensation function achieves high-performance constant voltage output.

[0050] Among them, the charging management module 302c selects the intermittent charging management chip LTC4071 chip, which has a low battery power lockout disconnect function. When the rechargeable battery power is lower than the disconnect voltage, the battery leakage current is almost zero, thereby preventing the rechargeable battery from irreparable damage caused by deep discharge. The DC generator 302a port is connected to the VCC pin of the LTC4071 chip, and the output pin BAT is directly connected to the rechargeable battery to provide it with stable and sustainable power.

[0051] At the same time, the lithium battery energy storage module 302d uses lithium batteries, which have the characteristics of high energy density, no pollution, many cycles, no memory effect, and fast charging speed.

[0052] The remaining structures are the same as those of Example 2.

[0053] During use, the solar photovoltaic panel 101a is supported and fixed by the panel bracket 101b, so that the tilted solar photovoltaic panel 101a can stably receive solar energy for a long time. At the same time, the liquid cooling pipe 102a with good thermal conductivity is designed to be U-shaped, which increases the surface contact area between the liquid cooling pipe 102a and the solar photovoltaic panel 101a, so that it can more efficiently absorb the heat energy on the solar photovoltaic panel 101a, so that the solar photovoltaic panel 101a can effectively dissipate heat. In addition, the combination of the fixing bracket 102c and the fixing rivet 102d can stably install the liquid cooling pipe 102a on the solar photovoltaic panel 101a. When the condensate 102b absorbs heat and evaporates into steam and expands in volume, it is transmitted through the infusion pipe 201a, and then the left end of the valve assembly 202 is pushed up to discharge the expanded gas. After the gas enters the piston chamber 203a, the pressure generated by the volume compression acts on the piston 203b, The plug rod 203d is lifted up and moves upward, and then the second piston rod 203e pulls the wheel 301 to perform a half-circle motion. When the gas in the piston chamber 203a is liquefied into liquid due to the release of energy, the piston 203b and the first piston rod 203b connected to it move downward due to gravity, and then the second piston rod 203e pulls the wheel 301 to perform another half-circle motion, thus forming a repeated circular motion. Due to the sealing design, the liquefied liquid will return to the gas-liquid chamber 201b through the valve assembly 202 opened on the left in the next cycle, realizing the effect of vaporizing heat energy and pushing the piston 203b to reciprocate through the valve assembly 202, that is, the movement of the piston 203b will pull the transmission track through the wheel 301, realizing the conversion of the collected thermal energy into mechanical energy, and then the obtained electrical energy is charged into the lithium battery energy storage module 302d through the DC-AC boost circuit module 302b and the charging management module 302c, completing the entire thermoelectric energy conversion process.

[0054] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic panel thermoelectric energy conversion device on a substation roof, characterized by: include, A thermal energy unit (100) comprising a photovoltaic component (101) and a liquid cooling component (102) arranged inside the photovoltaic component (101); A first conversion unit (200) comprising a conveying component (201) disposed on the liquid cooling component (102), a valve component (202) disposed on the conveying component (201), and a movable component (203) disposed on the conveying component (201); and A second conversion unit (300), comprising a rotor (301) disposed on the movable component (203), and a power generation component (302) disposed on the rotor (301); The liquid cooling assembly (102) comprises a liquid cooling tube (102a) arranged on the rear side of the solar photovoltaic panel (101a) of the photovoltaic assembly (101), condensate (102b) arranged in the inner cavity of the liquid cooling tube (102a), a fixing bracket (102c) arranged on the liquid cooling tube (102a), and a fixing rivet (102d) arranged on the fixing bracket (102c); The liquid cooling tube (102a) is made of heat-absorbing glass, to which 0.5% of iron, 0.5% of aluminum, 0.5% of cadmium, and 0.5% of copper are added, and the liquid cooling tube (102a) is configured in a U shape; The condensate (102b) in the inner cavity of the liquid cooling tube (102a) is set to 50% ethanol liquid, 20% n-pentane liquid, 10% high-purity distilled water, 10% pH stabilizer, 5% n-hexane liquid, and 5% ethylene glycol coolant, and the fixing bracket (102c) and fixing rivet (102d) arranged on the outside of the liquid cooling tube (102a) are made of iron-carbon alloy material.

2. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 1, characterized in that: The photovoltaic assembly (101) comprises a solar photovoltaic panel (101a) and a panel support (101b) arranged at the lower end of the solar photovoltaic panel (101a).

3. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 1, characterized in that: The conveying assembly (201) comprises a liquid delivery pipe (201a) arranged at the output end of the liquid cooling pipe (102a), a gas-liquid tank (201b) arranged at the other end of the liquid delivery pipe (201a) and in communication with the gas-liquid tank, and a support frame (201c) arranged at the lower end of the gas-liquid tank (201b).

4. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 3, characterized in that: The valve assembly (202) comprises a valve body rotating shaft (202a) arranged between the gas-liquid tank (201b) and the movable assembly (203), a tantalum-hafnium carbide alloy (202b) arranged on an inner core on one side of the valve body rotating shaft (202a), graphite (202c) arranged on an inner core on the other side of the valve body rotating shaft (202a), a medium dividing layer (202d) arranged between the tantalum-hafnium carbide alloy (202b) and the graphite (202c), and a silicone coating (202e) arranged on the outer sides of the valve body rotating shaft (202a), the tantalum-hafnium carbide alloy (202b), and the graphite (202c).

5. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 4, characterized in that: The movable assembly (203) includes a piston chamber (203a) arranged on the gas-liquid chamber (201b) and the valve assembly (202), a piston (203b) arranged in the inner cavity of the piston chamber (203a), a fastening component (203c) arranged on the piston (203b), a first piston rod fixedly mounted on the piston (203b) via the fastening component (203c), and a second piston rod (203e) arranged at the upper end of the first piston rod (203d).

6. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 5, characterized in that: The fastening component (203c) comprises a semi-arc seat disc (203c-1) arranged on the piston (203b), the semi-arc seat disc (203c-1) being provided with two jacks (203c-2) arranged on the semi-arc seat disc (203c-1), a stud bolt (203c-3) arranged on the semi-arc surface of the semi-arc seat disc (203c-1), and fastening nuts (203c-4) arranged at both ends of the stud bolt (203c-3).

7. The substation rooftop photovoltaic panel thermoelectric energy conversion device according to claim 6, characterized in that: The power generation component (302) comprises a DC generator (302a) arranged on the rotor (301), a DC-AC boost circuit module (302b) and a charging management module (302c) arranged on the DC generator (302a), and a lithium battery energy storage module (302d) arranged at the output end of the DC generator (302a).

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