CN115085052A - Photoelectric integrated heat dissipation method and device - Google Patents

Abstract

The invention provides a photoelectric integrated heat dissipation method and device, and belongs to the technical field of energy conservation. The invention comprises the following steps: the photovoltaic module is installed on the electric cabinet, the power output end of the photovoltaic module is connected with the power input end of the heat dissipation module of the electric cabinet, the power output end of the photovoltaic module and the power supply of the electric cabinet to the heat dissipation module are connected in parallel, and electric energy generated by the photovoltaic module is used for supplying power to the heat dissipation module of the electric cabinet. The photovoltaic power generation is utilized to supplement power for the heat dissipation equipment of the electrical cabinet, and the power is supplied by the original power supply when the light intensity is insufficient, so that the inward transfer of light and heat is reduced, and a part of electric energy for heat dissipation is saved, thus the electric energy can be saved, the working load of the electrical cabinet is reduced, and the sunlight directly irradiating the electrical cabinet can be partially converted into electric energy, so that the light and heat effect is reduced, the heat dissipation is facilitated, and the carbon emission is reduced.

Description

Photoelectric integrated heat dissipation method and device

technical field

The invention belongs to the technical field of energy saving, and more particularly, relates to a method and device for integrated photoelectric heat dissipation.

Background technique

How to reduce carbon emissions in the production process has become a problem in the operation and maintenance of power equipment.

Since a large amount of heat is generated during the working process of electrical equipment, the accumulation of this heat will generate high temperature locally, and the high temperature will endanger the normal operation of the equipment. In order to ensure the safe operation of the electrical equipment, a variety of Such heat dissipation devices are used to dissipate heat, and these heat dissipation devices usually provide power directly through the substation equipment of electrical equipment.

In some high-temperature areas or areas in summer, the high temperature outside will cause the heat dissipation load of electrical equipment to be very large. Not only will the heat dissipation system consume a lot of electricity, but also the load of electrical equipment will increase. For some small and medium-sized electrical equipment, continuous High temperatures can even threaten the safe operation of equipment. Especially, the shielding structures such as the side and top of the electrical cabinet of the electrical equipment in the direct sunlight area will generate a lot of light and heat, and sometimes it will be very hot to the touch, which will cause the heat to be transferred to the interior, which is even more unfavorable for internal heat dissipation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an optoelectronic integrated heat dissipation method and device to solve the above technical problems existing in the prior art.

In order to achieve the above purpose, the technical solution adopted in the present invention is to provide a photoelectric integrated heat dissipation method, comprising the following steps:

Install photovoltaic modules on the electrical cabinet, connect the power output end of the photovoltaic module to the power input end of the heat dissipation component of the electrical cabinet, and make the power output end of the photovoltaic module and the power supply of the electrical cabinet to the heat dissipation component in parallel, so as to utilize the photovoltaic The electrical energy generated by the components powers the cooling components of the electrical cabinet.

In some embodiments, the power output terminal of the photovoltaic module and the power supply of the electrical cabinet to the heat dissipation assembly pass through the power coordination module and the power supply end of the heat dissipation assembly of the electrical cabinet, and the power coordination module is used to ensure that the power generated by the photovoltaic assembly is preferentially supplied to the heat dissipation assembly use.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a photoelectric integrated heat dissipation device, which includes a heat dissipation component, a photovoltaic component and a power supply coordination module, and the heat dissipation component is installed on the electrical cabinet to dissipate heat from the electrical cabinet; the photovoltaic component It is installed on the electrical cabinet to generate electricity; the power coordination module is electrically connected to the heat dissipation component, the photovoltaic component and the power supply for the heat dissipation component of the electrical cabinet, so as to regulate the heat dissipation component to preferentially use the electric energy generated by the photovoltaic component.

In some embodiments, the power coordination module is a voltage regulation module, a rectification module or a power selection module.

In some embodiments, the optoelectronic integrated heat dissipation device further includes a power storage module, which is electrically connected to the photovoltaic assembly and the power coordination module, respectively, to store the electrical energy generated by the photovoltaic assembly, and supply power to the heat dissipation assembly through the power coordination module.

In some embodiments, the photovoltaic assembly includes a photovoltaic panel disposed on the top or side of the electrical cabinet and an inverter electrically connected to the photovoltaic panel, and the inverter is electrically connected to the power coordination module.

In some embodiments, the photovoltaic assembly further includes a bracket and an auxiliary fan, the photovoltaic panel is fixed on the outer wall of the electrical cabinet through the bracket, and there is a gap between the bracket and the outer wall of the electrical cabinet; the auxiliary fan is arranged in the gap and is connected to the inverter. The device is electrically connected for operation with power supplied by the inverter to flow air in the void.

In some embodiments, the photovoltaic assembly further includes a protective structure, the protective structure is arranged around the photovoltaic panel and separates the gap between the photovoltaic panel and the outer wall of the electrical cabinet from the outside; the protective structure is provided with a ventilation structure.

In some embodiments, the protective structures on the upper and lower parts of the photovoltaic panels arranged vertically or obliquely include several protection units, each of which includes a rotating shaft, a filter plate and a closing plate, and the rotating shaft is perpendicular to the direction of the photovoltaic panel. The direction of the board surface is set at the edge of the gap, and the two ends are respectively connected with the photovoltaic panel and the outer wall of the electrical cabinet. The edge of one side of the plate is rotatably connected with the rotating shaft, the filter plate and the closing plate are arranged at an angle, and the side of the rotating connection with the rotating shaft is fixedly connected to each other, and the free ends of the filter plate and the closing plate can be connected with the rotating shaft of the adjacent protection unit Overlap; in the natural state, the screen plate sags under the action of gravity, so that the free end of the closing plate is overlapped on the rotating shaft of the adjacent protection unit, and the gap between the photovoltaic panel and the outer wall of the electrical cabinet is closed; When there is air passing through, the air flow will push the closing plate to open for ventilation, and the filter screen plate is placed on the rotating shaft of the adjacent protection unit to form an integral filter screen structure.

In some embodiments, an acute angle is formed between the filter screen plate and the closing plate, the filter screen plate and the closing plate are connected by an elastic connecting piece, and the elastic connecting piece is rotatably connected with the rotating shaft.

The beneficial effects of the optoelectronic integrated heat dissipation method and device provided by the present invention are: compared with the prior art, the present invention is almost the time when the temperature is the highest when the sunlight is the strongest at noon, so the outer wall parts such as the roof and sidewalls of the electrical cabinet can Install photovoltaic modules and connect them with the heat dissipation equipment of the electrical cabinet, use photovoltaic power generation to supplement the power of the heat dissipation equipment of the electrical cabinet, and supply power through the original power supply when the light intensity is not enough, which not only reduces the inward transfer of light and heat, but also saves a part of the power used for heat dissipation. This not only saves electricity and reduces the workload of the electrical cabinet, but also partially converts the sunlight directly on the electrical cabinet into electrical energy, thereby reducing the photothermal effect, which is more conducive to heat dissipation, and also helps to reduce carbon emissions.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of the connection of an electrical control module of an optoelectronic integrated heat dissipation method and device provided by an embodiment of the present invention;

2 is a schematic diagram of a partial structure of an optoelectronic integrated heat dissipation device provided by an embodiment of the present invention;

3 is a schematic structural diagram of a protective structure part of the optoelectronic integrated heat dissipation method provided in an embodiment of the present invention in a natural state;

4 is a schematic structural diagram of a protective structure part of the optoelectronic integrated heat dissipation method provided in an embodiment of the present invention in a state of airflow flow.

Wherein, each reference number in the figure is as follows:

10. Heat dissipation components;

20. Photovoltaic modules;

21. Photovoltaic panel; 22. Inverter; 23. Bracket; 24. Auxiliary fan;

25. Protective structure;

251, rotating shaft; 252, filter plate; 253, closing plate; 254, elastic connector;

30. Power coordination module;

40. Power storage module;

50. Electrical cabinets.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It should be further explained that the drawings and embodiments of the present invention mainly describe the concept of the present invention. The specific forms and settings may not be completely described, but under the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

When an element is referred to as being "fixed to" or "disposed to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

Terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom"" The orientation or positional relationship indicated by "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, construction and operation in a particular orientation, and therefore should not be construed as a limitation of the present invention.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, and "several" means one or more, unless otherwise expressly and specifically defined.

The optoelectronic integrated heat dissipation method and device provided by the present invention will now be described.

Please refer to FIG. 1 and FIG. 2 together. The optoelectronic integrated heat dissipation method provided by the first embodiment of the present invention includes the following steps:

Install photovoltaic modules on the electrical cabinet, connect the power output end of the photovoltaic module to the power input end of the heat dissipation component of the electrical cabinet, and make the power output end of the photovoltaic module and the power supply of the electrical cabinet to the heat dissipation component in parallel, so as to utilize the photovoltaic The electrical energy generated by the components powers the cooling components of the electrical cabinet.

Compared with the prior art, the photoelectric integrated heat dissipation method provided in this embodiment, since the noon sunlight is the strongest time is almost the time of the highest temperature, photovoltaic components are installed on the outer wall parts such as the roof and side walls of the electrical cabinet, and the photovoltaic modules are installed together with the electrical cabinet. Connect the cooling equipment of the cabinet, use photovoltaic power generation to supplement the cooling equipment of the electrical cabinet, and supply power through the original power supply when the light intensity is not enough, which not only reduces the inward transfer of light and heat, but also saves a part of the power used for heat dissipation. The work load of the electrical cabinet, and the sunlight directly on the electrical cabinet will be partially converted into electrical energy, thereby reducing the photothermal effect, which is more conducive to heat dissipation, and is also conducive to reducing carbon emissions.

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The power output terminal of the photovoltaic module and the power supply of the electrical cabinet to the heat dissipation assembly pass through the power coordination module and the power supply end of the heat dissipation assembly of the electrical cabinet. The power coordination module is used to ensure that the power generated by the photovoltaic assembly is preferentially supplied to the heat dissipation assembly.

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The heat dissipation assembly 10 can be one or more of the form of a heat dissipation fan, a semiconductor refrigeration sheet, an air compressor, etc., and if multiple heat dissipation assemblies 10 are provided, they can be divided into different batches and controlled by the controller. When the power generated by the photovoltaic modules 20 is small, the heat dissipation components 10 of the first batch work, and after the power generated by the photovoltaic modules 20 exceeds the preset threshold, the heat dissipation components 10 of the next batch work, so that the heat dissipation components 10 of the next batch can be operated more fully. The electrical energy generated by the voltaic assembly 20 is utilized, and the possibility of overcurrent damage to the heat dissipation assembly 10 is reduced.

Based on the same inventive concept, an embodiment of the present application also provides an optoelectronic integrated heat dissipation device, including a heat dissipation assembly 10, a photovoltaic assembly 20 and a power supply coordination module 30. The heat dissipation assembly 10 is installed on the electrical cabinet and is used to dissipate heat from the electrical cabinet; the photovoltaic assembly 20 is installed on the electrical cabinet to generate electricity; the power coordination module 30 is respectively electrically connected to the heat dissipation assembly 10, the photovoltaic assembly 20 and the power supply of the electric cabinet to the heat dissipation assembly, so as to control the heat dissipation assembly 10 to preferentially use the electric energy generated by the photovoltaic assembly 20.

Compared with the prior art, in the optoelectronic integrated heat dissipation device provided by this embodiment, since the noon sunlight is the strongest, it is almost the time when the temperature is the highest. Therefore, photovoltaic modules 20 are installed on the outer wall parts such as the roof and side walls of the electrical cabinet, and are connected with the The heat dissipation component 10 of the electrical cabinet is connected, and the photovoltaic component 20 is used to generate electricity to supplement the power for the heat dissipation component 10 of the electrical cabinet. When the light intensity is insufficient, the original power supply is used to supply power, which not only reduces the inward transfer of light and heat, but also saves a part of the heat dissipation energy. This not only saves electricity and reduces the workload of the electrical cabinet, but also partially converts the sunlight directly on the electrical cabinet into electrical energy, thereby reducing the photothermal effect, which is more conducive to heat dissipation, and also helps to reduce carbon emissions.

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The heat dissipation assembly 10 may be one or more of the form of a heat dissipation fan, a semiconductor refrigeration sheet, an air compressor, etc., and if multiple heat dissipation assemblies 10 are provided, they can be divided into different batches and controlled by a controller.

When the power generated by the photovoltaic modules 20 is small, the heat dissipation components 10 of the first batch work, and after the power generated by the photovoltaic modules 20 exceeds a preset threshold, the heat dissipation components 10 of the next batch work, which can be more fully The electrical energy generated by the photovoltaic assembly 20 is utilized efficiently, and the possibility of overcurrent damage to the heat dissipation assembly 10 is reduced.

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The power coordination module 30 is in the form of a voltage regulation module, a rectifier module, a power source selection module or a PLC controller.

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The optoelectronic integrated heat dissipation device further includes a power storage module 40 , which is electrically connected to the photovoltaic assembly 20 and the power coordination module 30 respectively to store the electric energy generated by the photovoltaic assembly 20 and supply power to the heat dissipation assembly 10 through the power coordination module 30 .

The power storage module 40 can be a battery or a capacitor, etc., which can be stored when the photovoltaic module 20 generates a lot of electricity, so as to avoid excessive power supplied to the heat dissipation assembly 10 and overload operation of the heat dissipation assembly 10 .

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The photovoltaic assembly 20 includes a photovoltaic panel 21 disposed on the top or side of the electrical cabinet and an inverter 22 electrically connected to the photovoltaic panel 21 , and the inverter 22 is electrically connected to the power coordination module 30 .

Please refer to FIG. 1 and FIG. 2 together, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The photovoltaic assembly 20 also includes a bracket 23 and an auxiliary fan 24. The photovoltaic panel 21 is fixed on the outer wall of the electrical cabinet through the bracket 23, and there is a gap between it and the outer wall of the electrical cabinet; the auxiliary fan 24 is arranged in the gap and is connected to the inverter. The inverter 22 is electrically connected for operation with power supplied by the inverter 22 to flow air in the void.

In this way, on the one hand, a double-layer thermal insulation structure can be formed through the photovoltaic panels 21 and the gaps, so as to prevent the heat generated by direct sunlight from being conducted to the inside of the electrical cabinet, and it can also prevent the photovoltaic panels 21 from blocking the outlet of the heat dissipation air, so that the heat dissipation capacity of the electrical cabinet is reduced. It can avoid local overheating of the outer wall of the electrical cabinet and affect the photovoltaic panel 21. On the other hand, the auxiliary fan 24 can speed up the air flow in the gap, so that a relatively strong air convection is formed in the gap, and the photovoltaic panel 21 and the outer wall of the electrical cabinet are cooled. .

The bracket 23 mainly plays the role of support and connection, so its structure and material can be selected according to the actual situation. However, in order to reduce the thermal conductivity, the bracket 23 can be made of non-metallic heat insulating materials, such as glass fiber reinforced plastic, plastic steel and the like.

In order to facilitate the flow of air in the gap, the brackets 23 can be arranged in parallel in strips or in a lattice, so as to avoid blocking the flow of air. In order to guide the flow direction of the air, the form of the bracket 23 can also be provided in a form capable of guiding the flow. Specifically, on the photovoltaic panels 21 arranged vertically or obliquely, the brackets 23 can be arranged in a radial direction at a point on the upper part of the photovoltaic panels 21, so that the wind entering from the lower part and the left and right can flow out from the upper part, and the air is constantly flowing in the gap. It absorbs heat, reduces the density, and also tends to move upward, so it can form a strong air flow, which is more conducive to accelerating heat dissipation and reducing the adhesion of debris.

For the photovoltaic panels 21 arranged vertically or obliquely, the gap between the photovoltaic panel 21 and the outer wall of the electrical cabinet can be set in the form of a large top and a small bottom. Since the air in the gap continuously absorbs heat, the density decreases, the volume expands, and the upper part of the gap expands. The larger space is also more conducive to the flow of air.

The auxiliary fan 24 can be fixedly arranged in the gap, or can be movably arranged in the gap; when the auxiliary fan 24 is movably arranged, the auxiliary fan 24 can also be driven to move by the driving component to change the direction of the wind blown by the fan 24 to achieve different effects.

The auxiliary fans 24 can be in a group or in a row. The main function of the auxiliary fans 24 is to drive the air flow in the gap, so the number, location and installation form of the auxiliary fans 24 can be set according to actual needs.

Please refer to FIG. 2 , a specific embodiment provided by the present invention on the basis of the first embodiment is as follows:

The photovoltaic assembly 20 also includes a protective structure 25, which is arranged around the photovoltaic panel 21, and separates the space between the photovoltaic panel 21 and the outer wall of the electrical cabinet from the outside, so as to avoid the entry of large debris or birds and beasts. Affecting use; a ventilation structure is provided on the protective structure 25 to facilitate air flow.

The protective structure 25 can be a protective net, a venetian blind structure, a grille or other structures, and can also be a combination of different forms of protective structures.

Please refer to FIG. 2 to FIG. 4 together, a specific implementation manner provided by the present invention on the basis of the first implementation manner is as follows:

The protective structures 25 located at the upper and lower parts of the photovoltaic panel 21 on the photovoltaic panel 21 arranged vertically or obliquely include several protection units.

Each protection unit includes a rotating shaft 251, a screen plate 252 and a closing plate 253, the rotating shaft 251 is perpendicular to the direction of the board surface of the photovoltaic panel 21 and is arranged at the edge of the gap, and the two ends are respectively connected with the photovoltaic panel 21 and the outer wall of the electrical cabinet; The filter screen plate 252 is provided with a filter screen for ventilation, the plate surface of the closing plate 253 is closed to block air circulation, the filter screen plate 252 and the closing plate 253 are both connected with the rotating shaft 251 on one side in rotation; The angle is set, and the side that is rotatably connected with the rotating shaft 251 is fixedly connected to each other, and the free ends of the screen plate 252 and the closing plate 253 can overlap with the rotating shaft 251 of the adjacent protection unit.

In the natural state, the screen plate 252 sags under the action of gravity, so that the free end of the closing plate 253 is overlapped on the rotating shaft 251 of the adjacent protection unit, and the gap between the photovoltaic panel 21 and the outer wall of the electrical cabinet is closed to prevent Dust and other sundries or animals enter; and when there is air passing through, the air flow will push the closing plate 253 to ventilate, and the filter plate 252 will be placed on the rotating shaft 251 of the adjacent protection unit to form an integral filter structure, which can not only The ventilation is ensured, and the closing plate 253 is prevented from turning over at an excessively large angle and turning over to the back, causing the position to be open for a long time.

The two ends of the rotating shaft 251 can also be directly connected by the photovoltaic panel 21 and the grooves and other structures provided on the outer wall of the electrical cabinet to form a rotational connection, or can be rotationally connected by components such as bearings. Oil storage tanks can be provided at both ends of the rotating shaft 251 to apply grease to enhance the rotation performance and avoid jamming due to the entry of debris and corrosion.

An outer frame may be provided on the photovoltaic panel 21 , and the rotating shaft 251 is rotatably connected with the outer frame to avoid damage to the photovoltaic panel 21 . Likewise, the bracket 23 can be mounted on the outer frame, or extend from the outer frame to the back of the photovoltaic panel 21 .

Please refer to FIG. 3 and FIG. 4 together, a specific implementation manner provided by the present invention on the basis of the first implementation manner is as follows:

An acute angle is formed between the filter screen plate 252 and the closing plate 253 , and the filter screen plate 252 and the closing plate 253 are connected by an elastic connecting piece 254 , and the elastic connecting piece 254 is rotatably connected with the rotating shaft 251 .

In this way, if the airflow is too large, the elastic connector 254 can play a certain buffering role, and once the airflow becomes smaller, the screen plate 252 and the closing plate 253 return to the original angle. After the airflow disappears, the closing plate 253 can smoothly reset.

The filter screen plate 252 may be formed by setting a filter screen on the basis of a rectangular frame, or may be a rigid filter screen.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. A photoelectric integrated heat dissipation method is characterized by comprising the following steps:

the photovoltaic module is installed on the electric cabinet, the power output end of the photovoltaic module is connected with the power input end of the heat dissipation module of the electric cabinet, the power output end of the photovoltaic module and the power supply of the electric cabinet to the heat dissipation module are connected in parallel, and electric energy generated by the photovoltaic module is used for supplying power to the heat dissipation module of the electric cabinet.

2. The integrated photoelectric heat dissipation method of claim 1, wherein: the power output end of the photovoltaic module and the power supply of the electrical cabinet to the heat dissipation assembly pass through the power supply coordination module and the power supply end of the heat dissipation assembly of the electrical cabinet, and the power supply coordination module is used for ensuring that electric energy generated by the photovoltaic module is preferentially supplied to the heat dissipation assembly for use.

3. The utility model provides an integrative heat abstractor of photoelectricity which characterized in that includes:

the heat dissipation assembly (10) is arranged on the electrical cabinet and used for dissipating heat of the electrical cabinet;

the photovoltaic component (20) is arranged on the electric cabinet to generate electricity;

and the power supply coordination module (30) is respectively electrically connected with the heat dissipation assembly (10), the photovoltaic assembly (20) and a power supply of the electrical cabinet to the heat dissipation assembly so as to regulate and control the heat dissipation assembly (10) to preferentially use the electric energy generated by the photovoltaic assembly (20).

4. The optoelectronic integrated heat sink of claim 3, wherein: the power supply coordination module (30) is a voltage regulation module, a rectification module or a power supply selection module.

5. The optoelectronic integrated heat sink of claim 3, wherein: the photoelectric integrated heat dissipation device further comprises an electricity storage module (40), wherein the electricity storage module (40) is electrically connected with the photovoltaic assembly (20) and the power supply coordination module (30) respectively so as to store electric energy generated by the photovoltaic assembly (20) and supply power to the heat dissipation assembly (10) through the power supply coordination module (30).

6. The optoelectronic integrated heat sink of claim 3, wherein: the photovoltaic assembly (20) comprises a photovoltaic panel (21) arranged on the top or the side of the electrical cabinet and an inverter (22) electrically connected with the photovoltaic panel (21), and the inverter (22) is electrically connected with the power coordination module (30).

7. The optoelectronic integrated heat sink of claim 6, wherein: the photovoltaic assembly (20) further comprises a bracket (23) and an auxiliary fan (24), the photovoltaic panel (21) is fixed on the outer wall of the electrical cabinet through the bracket (23), and a gap is formed between the photovoltaic panel and the outer wall of the electrical cabinet; the auxiliary fan (24) is arranged in the gap and is electrically connected with the inverter (22) for enabling the air in the gap to flow by the power supply operation of the inverter (22).

8. The optoelectronic integrated heat sink of claim 7, wherein: the photovoltaic module (20) further comprises a protective structure (25), the protective structure (25) is arranged around the photovoltaic panel (21) in an enclosing mode, and a gap between the photovoltaic panel (21) and the outer wall of the electrical cabinet is isolated from the outside; and a ventilation structure is arranged on the protective structure (25).

9. The optoelectronic integrated heat sink of claim 8, wherein: the protection structure (25) on the upper portion and the lower portion of the photovoltaic panel (21) on the photovoltaic panel (21) which is vertically or obliquely arranged comprises a plurality of protection units, each protection unit comprises a rotating shaft (251), a filter screen plate (252) and a sealing plate (253), the rotating shaft (251) is perpendicular to the panel direction of the photovoltaic panel (21) and is arranged at the edge of the gap, two ends of the rotating shaft (251) are respectively connected with the photovoltaic panel (21) and the outer wall of the electrical cabinet, a filter screen is arranged on the filter screen plate (252) to be ventilated, the panel surface of the sealing plate (253) is sealed to block air circulation, the uniform side edges of the filter screen plate (252) and the sealing plate (253) are rotatably connected with the rotating shaft (251), the filter screen plate (252) and the sealing plate (253) are arranged in an included angle mode, one side rotatably connected with the rotating shaft (251) is fixedly connected with each other, and the free ends of the filter screen plate (252) and the sealing plate (253) can be connected with the rotating shaft (251) of the adjacent protection unit in an overlapping mode (ii) a In a natural state, the filter screen plate (252) sags under the action of gravity, so that the free end of the sealing plate (253) is lapped on the rotating shaft (251) of the adjacent protection unit, and a gap between the photovoltaic plate (21) and the outer wall of the electrical cabinet is sealed; when air flow passes through the filter screen, the closing plate (253) is pushed open by the air flow for ventilation, and the filter screen plate (252) is pushed against the rotating shaft (251) of the adjacent protection unit to form an integral filter screen structure.

10. The optoelectronic integrated heat sink of claim 9, wherein: the filter screen plate (252) and the closing plate (253) form an acute angle, the filter screen plate (252) and the closing plate (253) are connected through an elastic connecting piece (254), and the elastic connecting piece (254) is rotatably connected with the rotating shaft (251).

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