Photovoltaic energy storage equipment capable of automatically controlling temperature

Abstract

A photovoltaic energy storage device capable of autonomous temperature control disclosed by the present invention comprises an energy storage box and a photovoltaic module installed on the energy storage box, the photovoltaic module comprises a support plate, the support plate is rotatably installed on the energy storage box through a support rod, the upper surface of the support plate is provided with a mounting groove, a photovoltaic panel is installed in the mounting groove, and the photovoltaic panel is installed in the mounting groove. The supporting plate is provided with a water cooling device used for carrying out water cooling on the photovoltaic panel, the supporting plate is internally provided with a heating pipe used for heating the photovoltaic panel, and the equipment can automatically control the temperature of the photovoltaic panel.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic power generation technology and relates to a photovoltaic energy storage device with autonomous temperature control. Background Technology

[0002] The power generation efficiency of photovoltaic cells decreases as temperature increases. This is because higher temperatures reduce the bandgap of semiconductor materials, increasing the recombination probability of charge carriers and thus reducing output power.

[0003] Publication No. CN118539045B discloses a self-regulating temperature-controlled photovoltaic energy storage device, including a temperature control host housing, a temperature control channel assembly, and a heat flow pressure top assembly. A base frame is fixedly installed at the lower end of the temperature control host housing. The temperature control channel assembly is disposed inside the temperature control host housing and on the upper end of the base frame. An energy storage motor housing is integrated into one side of the temperature control host housing. The heat flow pressure top assembly is fixedly installed on the upper end of the energy storage motor housing. An external copper pipe heat dissipation assembly is fixedly installed on the outer side of the energy storage motor housing. A temperature-controlled air conditioner is fixedly installed at the rear end of the temperature control host housing, and an air conditioner outdoor unit is fixedly installed at the rear end of the air conditioner. A maintenance door is rotatably installed at the front end of the temperature control host housing. A ventilation-side dust cover is fixedly installed on the side of the temperature control host housing. Several temperature control channel heat dissipation baffles are fixedly installed between the inner walls of both sides of the temperature control host housing. A ventilation-side dust cover is integrated into the side of the temperature control host housing. The front end of the energy storage motor unit is provided with a battery pack observation window, and a ventilation connecting pipe is fixedly installed on the upper end of the heat flow pressure top assembly. A connecting pipe dust cover is provided inside the ventilation connecting pipe.The temperature control channel assembly includes: a converging temperature control vertical channel, separate independent air ducts, a temperature neutralization air duct box, a temperature control bottom air duct box, a neutralization air duct box connecting copper pipe, a middle air duct box, a battery pack bottom partition, a battery pack mounting base, a battery pack back mounting bracket, and a neutralization serpentine copper pipe; the converging temperature control vertical channel has several separate independent air ducts integrated on its side, and each separate independent air duct has a temperature neutralization air duct box integrated at its outer end. Each temperature neutralization air duct box contains a neutralization serpentine copper pipe, and each neutralization serpentine copper pipe has a head... The tail end is fixedly connected to a neutral air duct box with copper pipes. The temperature control control panel monitors the temperature of the energy storage motor unit's outer casing and internal battery pack, enabling the operation of the temperature-controlled air conditioner and outdoor unit. Air at the set temperature is blown in through the temperature control channel assembly. The external copper pipe heat dissipation assembly connects the heat from the outer casing to the temperature control channel assembly, circulating and cooling it synchronously. This allows for more precise and accurate temperature regulation of the battery pack, resulting in better temperature control. The temperature-controlled air conditioner directs the temperature-controlled air through the temperature neutral air duct box, and... The airflow is separated from the independent air duct and the converging temperature-controlled vertical channel, and blows upward from the lower temperature-controlled bottom air duct box, passing through the air duct and the bottom partition of the battery pack. This directly controls the temperature of the battery pack on the mounting base and the air around the battery pack. It also cools the neutralizing serpentine copper pipes inside the temperature-neutralizing air duct box, and the upper and lower horizontal copper pipes inside the temperature-controlled bottom and middle air duct boxes. This allows the cooled heat-conducting liquid in the copper pipes to be transferred back to the external copper pipe heat dissipation assembly. Finally, it passes through the external copper pipe heat dissipation assembly's outer shell heat-conducting pad. The inner thermal conductive pad of the casing adheres to the sides of the energy storage motor unit's outer shell, thereby cooling the outer shell. A battery pack insulation plate separates the structure from the battery pack, ensuring that the cooling of the casing does not affect the battery pack. Air blown out from inside the energy storage motor unit's outer shell 6 draws hot air from the upper interior through dustproof meshes on both sides of the pressure relief box, pushing open the one-way pressure relief plug. It should be noted that the return spring has a sufficiently light elastic coefficient to push the one-way pressure relief plug back into place, achieving both dust prevention and ventilation. However, this method of using air cooling and air conditioning is costly and has a slow temperature adjustment speed.

[0004] For typical crystalline silicon solar cells, the temperature effect coefficient is between -0.35% / ℃ and -0.5% / ℃, meaning that for every 1℃ increase in temperature, the power generation efficiency of the solar cell decreases by 0.35%-0.5%. During the process of absorbing sunlight and converting it into electrical energy, only 25%-30% of the light energy is effectively converted into electricity, while the remaining energy is lost and becomes heat, which is absorbed by the solar panel. Therefore, under sunlight, the temperature of solar panels can rise significantly, reaching up to 200℃. Because this increased temperature leads to a decrease in power generation efficiency, the power output of solar panels decreases in high-temperature environments. Therefore, controlling the temperature of solar panels is a crucial and critical issue in this industry, but existing technologies do not provide relevant solutions. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a photovoltaic energy storage device with autonomous temperature control, which can automatically control the temperature of the photovoltaic panel.

[0006] To achieve the above objectives, the present invention discloses a self-temperature-controlled photovoltaic energy storage device, including an energy storage box and a photovoltaic module installed on the energy storage box. The photovoltaic module includes a support plate, which is rotatably mounted on the energy storage box via a support rod. An installation groove is formed on the upper surface of the support plate, and a photovoltaic panel is installed in the installation groove. A water-cooling device for water cooling the photovoltaic panel is provided on the support plate, and a heating pipe for heating the photovoltaic panel is provided inside the support plate.

[0007] Furthermore, the two ends of the support rod are respectively hinged to the support plate and the energy storage box.

[0008] Furthermore, the water cooling device includes a protrusion on the upper part of the support plate and a water collection tank on the lower side of the support plate. The protrusion has a water injection chamber, and the water injection chamber has a water outlet on the side of its upper end. The water outlet is located at the upper end of the photovoltaic panel. The top opening of the water collection tank has a water collection port, and the energy storage box is connected to the water injection chamber via a water pump.

[0009] Furthermore, the water inlet is covered with a filter screen.

[0010] Furthermore, a drain outlet is provided on the side of the lower end of the water collection tank, and the outlet of the drain outlet is connected to the energy storage box via a third pipe.

[0011] Furthermore, an installation groove is formed on the upper surface of the support plate, and the photovoltaic panel is installed in the installation groove.

[0012] Furthermore, the support plate has a cavity, and several fixing plates are fixed side by side in the cavity. The height of the fixing plates is the same as the height of the cavity. An expansion chamber and a cooling control chamber, which are separated from the expansion chamber, are arranged in the fixing plates. A piston is slidably installed in the expansion chamber. The space between the inner wall of the expansion chamber and one side of the piston is filled with a thermal expansion fluid. A piston rod is fixedly connected to the side of the piston away from the thermal expansion fluid. The end of the piston rod passes through the cooling control chamber and is connected to a U-shaped rod. A cooling control plate is arranged in the cooling control chamber and is connected to the piston rod. A spring is arranged between the side of the piston away from the thermal expansion fluid and the inner wall of the expansion chamber. The spring is sleeved on the piston rod. A first proximity switch for sensing the action of the cooling control plate is installed in the cooling control chamber. The first proximity switch is electrically connected to a water pump. The energy storage tank and the inlet of the water pump are connected through a first pipe.

[0013] Furthermore, a heating control chamber is provided inside the fixed plate. The heating control chamber is located on the side of the expansion chamber away from the cooling control chamber. A connecting rod is fixedly connected to the piston on the side away from the piston rod. The end of the connecting rod passes through the heating control chamber and is connected to a sealing plate. A heating control plate is fixedly connected to the connecting rod. The heating control plate is located inside the heating control chamber. A second proximity switch for sensing the heating control plate is fixedly installed on the inner wall of the heating control chamber. The second proximity switch is electrically connected to the heating tube.

[0014] Furthermore, the protrusion has a connecting cavity, through which the U-shaped rod is inserted into the water injection cavity.

[0015] Furthermore, the end of the U-shaped rod is directly opposite the water outlet, and the end of the sealing plate is inserted into the water collection tank and directly opposite the drain outlet.

[0016] The present invention has the following beneficial effects: In specific operation, the self-temperature-controlled photovoltaic energy storage device of the present invention is equipped with a water-cooling device on the support plate for water cooling of the photovoltaic panel, and a heating pipe for heating the photovoltaic panel is installed inside the support plate. That is, the temperature of the photovoltaic panel is regulated by the heating pipe and the water-cooling device to avoid the temperature of the photovoltaic panel being too low or too high, thereby improving the power generation efficiency of the photovoltaic panel, which is highly practical. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a sectional view of the support plate 201; Figure 3 This is a cross-sectional view of the support plate 201; Figure 4 This is a structural diagram of the temperature control component.

[0019] Among them, 1 is the energy storage box, 2 is the photovoltaic module, 201 is the support plate, 202 is the support rod, 203 is the mounting groove, 204 is the photovoltaic panel, 205 is the cavity, 3 is the fixing plate, 301 is the expansion chamber, 302 is the cooling control chamber, 303 is the piston, 304 is the piston rod, 305 is the cooling control plate, 306 is the spring, 307 is the heating control chamber, 308 is the connecting rod, 309 is the heating control plate, 4 is the heating tube, 401 is the serpentine groove, 5 is the protrusion, 501 is the connecting cavity, 502 is the U-shaped rod, 503 is the water injection cavity, 504 is the water outlet, 6 is the water collection tank, 601 is the filter screen, 602 is the third pipe, and 603 is the sealing plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this invention generally indicates that the preceding and following objects have an "or" relationship.

[0024] It should be understood that although terms such as first, second, third, etc., may be used in the embodiments of the present invention to describe the preset range, these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from one another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0025] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0028] Example 1 refer to Figure 1 The self-temperature-controlled photovoltaic energy storage device of the present invention includes an energy storage box 1 and a photovoltaic module 2 installed on the energy storage box 1. The photovoltaic module 2 includes a support plate 201, which is rotatably installed on the energy storage box 1 by a support rod 202. An installation groove 203 is provided on the upper surface of the support plate 201, and a photovoltaic panel 204 is installed in the installation groove 203. A water cooling device for water cooling the photovoltaic panel 204 is provided on the support plate 201, and a heating tube 4 for heating the photovoltaic panel 204 is provided in the support plate 201.

[0029] Example 2 refer to Figure 1 , Figure 2 , Figure 3 and Figure 4To improve this application, the self-temperature-controlled photovoltaic energy storage device of the present invention includes an energy storage box 1 and a photovoltaic module 2 installed on the energy storage box 1. The photovoltaic module 2 includes a support plate 201, which is rotatably mounted on the energy storage box 1 via a support rod 202. The two ends of the support rod 202 are respectively hinged to the support plate 201 and the energy storage box 1. An installation groove 203 is formed on the upper surface of the support plate 201, and a photovoltaic panel 204 is installed in the installation groove 203. A cavity 205 is provided in the support plate 201, and several fixing plates 3 are fixed side by side in the cavity 205. The height of the fixing plates 3 is the same as the height of the cavity 205. An expansion chamber 301 and a cooling control chamber 302 distributed separately from the expansion chamber 301 are provided in the fixing plates 3. A piston 303 is slidably installed in the expansion chamber 301. The inner wall of the energy storage tank 1 is filled with thermal expansion fluid between itself and one side of the piston 303. A piston rod 304 is fixedly connected to the side of the piston 303 away from the thermal expansion fluid. The end of the piston rod 304 passes through the cooling control chamber 302 and is connected to a U-shaped rod 502. A cooling control plate 305 is installed in the cooling control chamber 302 and is connected to the piston rod 304. A spring 306 is installed between the side of the piston 303 away from the thermal expansion fluid and the inner wall of the expansion chamber 301. The spring 306 is sleeved on the piston rod 304. A first proximity switch for sensing the action of the cooling control plate 305 is installed in the cooling control chamber 302. The first proximity switch is electrically connected to a water pump. The energy storage tank 1 is connected to the inlet of the water pump through a first pipe. The outlet of the water pump is connected to a second pipe that allows water to flow to the surface of the photovoltaic panel 204.

[0030] The support plate 201 is provided with a serpentine groove 401, and heating tubes 4 are installed in a serpentine distribution within the serpentine groove 401 to ensure uniform heating of the photovoltaic panel 204. The heating tubes 4 are located between the photovoltaic panel 204 and the cavity 205. A heating control chamber 307 is provided within the fixing plate 3. The heating control chamber 307 is located on the side of the expansion chamber 301 away from the cooling control chamber 302. A connecting rod 308 is fixedly connected to the piston 303 on the side away from the piston rod 304. The end of the connecting rod 308 passes through the heating control chamber 307 and is connected to a sealing plate 603. A heating control plate 309 is fixedly connected to the connecting rod 308. The heating control plate 309 is located within the heating control chamber 307. A second proximity switch for sensing the heating control plate 309 is fixedly installed on the inner wall of the heating control chamber 307. The second proximity switch is electrically connected to the heating tubes 4.

[0031] The support plate 201 has a water collection trough 6 on its lower side, and a water inlet at the top opening of the water collection trough 6. The water inlet is covered with a filter screen 601. A drain outlet is provided on the lower side of the water collection trough 6. The end of the sealing plate 603 is inserted into the water collection trough 6 and faces the drain outlet. The outlet of the drain outlet is connected to the energy storage box 1 via a third pipe 602. The support plate 201 has a protrusion 5 at its upper end. The protrusion 5 has a water injection chamber 503 and a connecting chamber 501. The U-shaped rod 502 passes through the connecting chamber 501 and is inserted into the water injection chamber 503. A water outlet 504 is provided on the upper side. The water outlet 504 is located at the upper end of the photovoltaic panel 204, and the end of the U-shaped rod 502 is directly opposite the water outlet 504. When the thermal expansion liquid expands due to heat, the U-shaped rod 502 moves away from the water outlet 504, and the sealing plate 603 moves away from the drain outlet. At the same time, the first proximity switch is triggered to start the water pump. When the temperature is low, the U-shaped rod 502 and the sealing plate 603 move in the opposite direction. When the temperature is too low, the second proximity switch is triggered, which causes the heating tube 4 to start and heat the photovoltaic panel 204.

[0032] The working process of this invention is as follows: By setting up a thermal expansion fluid below the photovoltaic panel 204, when the temperature of the photovoltaic panel 204 is too high, the thermal expansion fluid expands, thereby activating a water pump to cool the photovoltaic panel 204. Once the cooling is complete, the thermal expansion fluid contracts to shut off the water pump, ensuring timely cooling of the photovoltaic panel 204 and maintaining its power generation efficiency. By arranging multiple fixed plates 3 side by side, the thermal expansion fluid in each fixed plate 3 drives the piston 303 in the corresponding expansion chamber 301 to move. For large photovoltaic panels 204, due to their large area, uneven heating is likely to occur. By having multiple pistons 303 move according to the degree of local heating, the uniformity of cooling of the photovoltaic panel 204 can be ensured.

[0033] When the photovoltaic panel 204 is exposed to cold weather and its temperature is low, the heating tube 4 is turned on by the second proximity switch to heat the photovoltaic panel 204. This prevents the photovoltaic panel 204 from freezing and being damaged by the cold weather, and also helps the ice and snow in extremely cold weather to melt, preventing the ice and snow from damaging the photovoltaic panel 204.

[0034] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0035] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0036] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A photovoltaic energy storage device with autonomous temperature control, characterized in that, The device includes an energy storage box (1) and a photovoltaic module (2) installed on the energy storage box (1). The photovoltaic module (2) includes a support plate (201). The support plate (201) is rotatably installed on the energy storage box (1) by a support rod (202). An installation groove (203) is provided on the upper surface of the support plate (201). A photovoltaic panel (204) is installed in the installation groove (203). A water cooling device for water cooling of the photovoltaic panel (204) is provided on the support plate (201). A heating tube (4) for heating the photovoltaic panel (204) is provided in the support plate (201).

2. The self-temperature-controlled photovoltaic energy storage device according to claim 1, characterized in that, The two ends of the support rod (202) are hinged to the support plate (201) and the energy storage box (1), respectively.

3. The self-temperature-controlled photovoltaic energy storage device according to claim 1, characterized in that, The water cooling device includes a protrusion (5) on the upper end of the support plate (201) and a water collection tank (6) on the lower side of the support plate (201). The protrusion (5) is provided with a water injection chamber (503). The water injection chamber (503) is provided with a water outlet (504) on the side of the upper end of the water injection chamber (503). The water outlet (504) is located at the upper end of the photovoltaic panel (204). The top opening of the water collection tank (6) is provided with a water collection port. The energy storage box (1) is connected to the water injection chamber (503) via a water pump.

4. The self-temperature-controlled photovoltaic energy storage device according to claim 3, characterized in that, The water inlet is covered with a filter screen (601).

5. The self-temperature-controlled photovoltaic energy storage device according to claim 3, characterized in that, A drain outlet is provided on the side of the lower end of the water collection tank (6), and the outlet of the drain outlet is connected to the energy storage box (1) via the third pipe (602).

6. The self-temperature-controlled photovoltaic energy storage device according to claim 1, characterized in that, The upper surface of the support plate (201) is provided with an installation groove (203), and the photovoltaic panel (204) is installed in the installation groove (203).

7. The self-temperature-controlled photovoltaic energy storage device according to claim 5, characterized in that, The support plate (201) has a cavity (205) inside, and several fixing plates (3) are fixed side by side inside the cavity (205). The height of the fixing plates (3) is the same as the height of the cavity (205). An expansion chamber (301) and a cooling control chamber (302) separated from the expansion chamber (301) are provided inside the fixing plates (3). A piston (303) is slidably installed inside the expansion chamber (301). A thermal expansion liquid is filled between the inner wall of the expansion chamber (301) and one side of the piston (303). A piston rod (304) is fixedly connected to the side of the piston (303) away from the thermal expansion liquid. The end of the piston rod (304) is... A U-shaped rod (502) is connected after passing through the cooling control chamber (302). A cooling control plate (305) is installed in the cooling control chamber (302). The cooling control plate (305) is connected to the piston rod (304). A spring (306) is installed between the side of the piston (303) away from the thermal expansion liquid and the inner wall of the expansion chamber (301). The spring (306) is sleeved on the piston rod (304). A first proximity switch for sensing the action of the cooling control plate (305) is installed in the cooling control chamber (302). The first proximity switch is electrically connected to a water pump. The energy storage box (1) is connected to the inlet of the water pump through a first pipe.

8. The self-temperature-controlled photovoltaic energy storage device according to claim 7, characterized in that, A heating control chamber (307) is provided inside the fixed plate (3). The heating control chamber (307) is located on the side of the expansion chamber (301) away from the cooling control chamber (302). A connecting rod (308) is fixedly connected to the side of the piston (303) away from the piston rod (304). The end of the connecting rod (308) passes through the heating control chamber (307) and is connected to a sealing plate (603). A heating control plate (309) is fixedly connected to the connecting rod (308). The heating control plate (309) is located inside the heating control chamber (307). A second proximity switch for sensing the heating control plate (309) is fixedly installed on the inner wall of the heating control chamber (307). The second proximity switch is electrically connected to the heating tube (4).

9. The self-temperature-controlled photovoltaic energy storage device according to claim 8, characterized in that, The protrusion (5) has a connecting cavity (501), and the U-shaped rod (502) passes through the connecting cavity (501) and is inserted into the water injection cavity (503).

10. The self-temperature-controlled photovoltaic energy storage device according to claim 9, characterized in that, The end of the U-shaped rod (502) is directly opposite the outlet (504), and the end of the sealing plate (603) is inserted into the water collection tank (6) and is directly opposite the drain outlet.

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