Photovoltaic module cooling system convenient to install

Abstract

The utility model discloses a photovoltaic module cooling system convenient to install, and belongs to the field of photovoltaic technology. The cooling system comprises a water-cooling input header pipe, a water-cooling output header pipe, an air-cooling input header pipe, an air-cooling output header pipe and a plurality of cooling assemblies, the cooling assemblies are arranged on the back side of the photovoltaic module, each cooling assembly comprises a water-cooling coil pipe and an air-cooling coil pipe, one end of each water-cooling coil pipe is connected with the water-cooling input header pipe, and the other end of each water-cooling coil pipe is connected with the water-cooling output header pipe. The water cooling coil pipes are arranged in parallel; one end of the air-cooling coil is connected with the air-cooling input header pipe, and the other end of the air-cooling coil is connected with the air-cooling output header pipe and the air-cooling coil in parallel; the water cooling coil pipe and the air cooling coil pipe are arranged in an embedded mode. Through the combination of the air cooling coil pipe and the water cooling coil pipe and the specific arrangement of the water cooling input header pipe, the water cooling output header pipe, the air cooling input header pipe, the air cooling output header pipe and the cooling assembly, high cooling efficiency, convenience in equipment installation and the like are realized, and the adaptability of the solar power generation system is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling system especially to a photovoltaic module cooling system convenient to install belongs to photovoltaic technical field. BACKGROUND

[0002] Photovoltaic module, also called "solar panel" or "solar cell module", is composed of solar cell pieces (specifications such as 125*125mm, 156*156mm, 124*124mm, etc.). Since the current and voltage of a single solar cell piece are small, it is connected in series to obtain high voltage, and then connected in parallel to obtain high current, and finally output through a diode (to prevent current backflow). Photovoltaic module is the core part of a solar power generation system and the most important part of the system. Its function is to convert solar energy into electrical energy and store it in a storage battery or drive a load to work.

[0003] When the photovoltaic module works, it will generate heat, causing the photovoltaic module to heat up. The temperature rise will lead to a decrease in the working efficiency and a shortening of the service life of the photovoltaic module. For example, the efficiency of the photovoltaic module will decrease by 0.3-0.5% for every 1℃ rise in temperature. Therefore, the cooling of the photovoltaic module is very important.

[0004] At present, the cooling of the photovoltaic module is generally achieved by air cooling or water cooling, but there are problems such as low cooling efficiency, high energy consumption, waste of water resources, and troublesome installation of cooling equipment. For example, the prior art CN220732725U discloses a multifunctional roof photovoltaic module cooling system, which realizes double cooling by combining a water cooling assembly and an air cooling assembly, cools the photovoltaic module, and improves the power generation efficiency of the module. However, it still has the following technical problems:

[0005] 1. It is suitable for small-scale photovoltaic module power generation systems, and when multiple solar cell pieces are combined, there is still the problem of low cooling efficiency, and it is also inconvenient to install;

[0006] 2. It uses rainwater and tap water as the water source for water cooling, but after the cooling system runs for a long time, the pipeline will be blocked, which will affect the cooling efficiency and the power generation efficiency of the photovoltaic module.

[0007] Therefore, there is a need for a photovoltaic module cooling system that can ensure the cooling efficiency and is convenient to install. SUMMARY

[0008] The application discloses a photovoltaic module cooling system which is convenient to install and aims at solving the problems of low cooling efficiency and inconvenient installation in the prior art.

[0009] In order to achieve the above technical purpose, the following technical scheme is provided:

[0010] A photovoltaic module cooling system which is convenient to install is arranged in a solar power generation system, the solar power generation system comprises a photovoltaic module, and the photovoltaic module comprises a plurality of solar cell pieces.

[0011] The cooling system comprises a water cooling input main pipe, a water cooling output main pipe, a wind cooling input main pipe, a wind cooling output main pipe and a plurality of cooling assemblies, the cooling assemblies are arranged on back sides of the solar cell pieces, the cooling assemblies comprise water cooling coils and wind cooling coils, one end of the water cooling coil is connected with the water cooling input main pipe, the other end of the water cooling coil is connected with the water cooling output main pipe, and the water cooling coils are arranged in parallel; one end of the wind cooling coil is connected with the wind cooling input main pipe, the other end of the wind cooling coil is connected with the wind cooling output main pipe, and the wind cooling coils are arranged in parallel.

[0012] The water cooling coil and the wind cooling coil are arranged in an embedded mode.

[0013] Further, the water inlet of the water cooling coil is arranged beside the air outlet of the wind cooling coil, and the water outlet of the water cooling coil is arranged beside the air inlet of the wind cooling coil. The arrangement effectively improves the cooling efficiency and ensures the uniformity of the photovoltaic module cooling, thereby indirectly improving the working quality.

[0014] Further, the water inlet of the water cooling coil is connected with the water cooling input main pipe through a water cooling branch pipe I, and the water outlet of the water cooling coil is connected with the water cooling output main pipe through a water cooling branch pipe II. The arrangement facilitates the installation between the water cooling coil and the water cooling input main pipe and the water cooling output main pipe, and facilitates the maintenance, cleaning and replacement of the water cooling coil. In addition, the corresponding cooling assemblies in the photovoltaic module are isolated, the solar cell pieces are cooled individually, and the cooling efficiency and quality are improved.

[0015] Further, the water cooling branch pipe I and the water cooling branch pipe II are each provided with an adjusting valve I for controlling the flow of cooling water, a flow meter for detecting the flow of cooling water and a filter.

[0016] Further, the air-cooled coil air inlet is connected with the air-cooled input main pipe through the air-cooled branch pipe I, and the air-cooled coil air outlet is connected with the air-cooled output main pipe through the air-cooled branch pipe II. This setting facilitates the installation between the air-cooled coil and the air-cooled input main pipe and the air-cooled output main pipe, and facilitates the maintenance, cleaning and replacement of the air-cooled coil. In addition, the corresponding cooling components in the photovoltaic module are isolated to realize the individual cooling of the solar cell, thereby improving the cooling efficiency and quality.

[0017] Further, the air-cooled branch pipe I and the air-cooled branch pipe II are each provided with an adjusting valve II for controlling the cooling air flow and a pressure sensor for detecting the cooling air volume.

[0018] Further, the back side of the solar cell is also provided with a temperature sensor (the temperature sensor can be mounted and fixed through a bracket), which can be multiple, and the specific number and position thereof are set according to the specification of the solar cell and finally ensure the accuracy of the detected temperature.

[0019] Further, the cooling system further comprises a controller, and the flow meter, the temperature sensor, the pressure sensor, the controller, the adjusting valve I and the adjusting valve II are connected through electrical signals.

[0020] Further, the water-cooled input main pipe is connected with a water storage tank, and a water pump is arranged on the water-cooled input main pipe; a fan is arranged on the air-cooled input main pipe; and the air-cooled output main pipe and the water-cooled output main pipe are connected with a heating system to realize the utilization of heat energy, water resources and wind resources.

[0021] In the technical solution, the specific positions and specific numbers of the flow meter, the temperature sensor, the pressure sensor, the controller, the adjusting valve I and the adjusting valve II are further limited according to actual needs; and in order to further facilitate the installation, maintenance, cleaning and replacement of the components in the cooling system, the corresponding devices are connected in a detachable manner, such as flange connection and buckle connection.

[0022] In the technical solution, the positional relationships such as “middle”, “back side”, “one end”, “the other end”, “between”, “side”, “upper” are defined according to the actual use state and are the conventional terms in the technical field and the conventional terms used by the personnel in the field in the actual use process.

[0023] The technical solution has the following beneficial technical effects:

[0024] Firstly, the combination of the air-cooled coil and the water-cooled coil, and the specific arrangement of the water-cooled input main pipe, the water-cooled output main pipe, the air-cooled input main pipe, the air-cooled output main pipe and the cooling component (the air-cooled coil and the water-cooled coil) realize high cooling efficiency, facilitate equipment installation and improve the adaptability of the solar power generation system.

[0025] II. In the utility model, the setting of the water-cooled input main pipe, the water-cooled output main pipe, the air-cooled input main pipe and the air-cooled output main pipe guarantees the orderliness of water cooling and air cooling; and the air-cooled output main pipe and the water-cooled output main pipe are connected with the heating system, realizing how to utilize heat energy, water resources, air resources and the like.

[0026] The water-cooled coils are arranged in parallel, and the air-cooled coils are arranged in parallel, thereby guaranteeing the separate cooling of the solar cell in the photovoltaic module, improving the cooling efficiency on the one hand and facilitating the installation of the cooling assembly on the other hand.

[0027] The water-cooled coils and the air-cooled coils are arranged in a nested manner, combining air cooling with water cooling, so as to select air cooling or water cooling or air cooling + water cooling according to actual requirements, improve the cooling efficiency, reduce energy consumption, reduce the dependence on the environment and improve the adaptability of the solar power generation system. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a working state diagram of the cooling assembly in the utility model;

[0029] Figure 2 is a working state diagram of the utility model;

[0030] Figure 3 is a cooling control principle diagram involved in the utility model;

[0031] In the drawing, 1 is a solar cell, 2 is a water-cooled input main pipe, 3 is a water-cooled output main pipe, 4 is an air-cooled input main pipe, 5 is an air-cooled output main pipe, 6 is a water-cooled coil, 7 is an air-cooled coil, 8 is a water-cooled branch pipe I, 9 is a water-cooled branch pipe II, 10 is a regulating valve I, 11 is a flow meter, 12 is a filter, 13 is an air-cooled branch pipe I, 14 is an air-cooled branch pipe II, 15 is a regulating valve II, 16 is a pressure sensor, 17 is a temperature sensor, 18 is a controller, 19 is a water pump and 20 is a fan. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Embodiment 1

[0034] A photovoltaic module cooling system convenient to install, like Figures 1-2As shown, a solar power generation system is installed, which includes photovoltaic modules, and the photovoltaic modules include multiple solar cells 1;

[0035] The cooling system includes a water-cooled input main pipe 2, a water-cooled output main pipe 3, an air-cooled input main pipe 4, an air-cooled output main pipe 5, and multiple cooling components. The cooling components are located on the back side of the solar cells 1. Each cooling component includes a water-cooled coil 6 and an air-cooled coil 7. One end of the water-cooled coil 6 is connected to the water-cooled input main pipe 2, and the other end is connected to the water-cooled output main pipe 3. The water-cooled coils 6 are arranged in parallel. One end of the air-cooled coil 7 is connected to the air-cooled input main pipe 4, and the other end is connected to the air-cooled output main pipe 5. The air-cooled coils 7 are arranged in parallel; the water-cooled coils 6 and air-cooled coils 7 are arranged in an interlocking manner (the distance between the water-cooled coils 6 and air-cooled coils 7 is limited by operating conditions and other factors). The water-cooled coils 6 and air-cooled coils 7 are arranged in an alternating manner, that is, air cooling and water cooling are combined. According to actual needs, air cooling, water cooling, or air cooling + water cooling can be selected to improve cooling efficiency, reduce energy consumption, reduce dependence on the environment, and improve the adaptability of the solar power generation system, etc.

[0036] According to actual needs, the water-cooled input main pipe 2 is connected to the water storage tank, and a water pump 19 is installed on the water-cooled input main pipe 2; a fan 20 is installed on the air-cooled input main pipe 4; the air-cooled output main pipe 5 and the water-cooled output main pipe 3 are both connected to the heating system to realize how to utilize heat energy, water resources, and air resources.

[0037] In addition, the water-cooled coil 6 and the air-cooled coil 7 can be fixed to the back of the solar cell 1 in a detachable manner, or other convenient installation methods can be used.

[0038] In this cooling system, the working principle of the water-cooled coil 6 is as follows: the flowing cooling water absorbs the heat from the photovoltaic module and is then output through the water-cooled output main pipe 3, and the recovered heat energy can be used for other purposes.

[0039] The working principle of the air-cooled coil 7 involves: introducing air into the pores on the back side of the solar cell 1 to enhance airflow and remove heat; simultaneously, the generated "hot air" is drawn out by the fan for other uses. More specifically, the air-cooled coil 7 can be equipped with evenly distributed air outlets to ventilate the pores on the back side of the solar cell 1. Alternatively, heat can be transferred through the wall of the air-cooled coil 7, and the cooling air flowing inside the coil absorbs heat from the photovoltaic module, which is then output through the air-cooled output main pipe 5 to remove the heat, allowing the recovered heat energy to be used for other purposes.

[0040] Example 2

[0041] Based on Example 1, this example further defines the positional relationship between the water inlet of the water-cooled coil 6, the water outlet of the water-cooled coil 6, the air outlet of the air-cooled coil 7, and the air inlet of the air-cooled coil 7, in order to further illustrate this technical solution.

[0042] The water inlet of water-cooled coil 6 is located next to the air outlet of air-cooled coil 7, and the water outlet of water-cooled coil 6 is located next to the air inlet of air-cooled coil 7. This arrangement effectively improves cooling efficiency and ensures the uniformity of cooling of photovoltaic modules, indirectly improving their working quality.

[0043] Example 3

[0044] Based on embodiments 1-2, this embodiment further defines the connection relationship between the water-cooled coil 6, the water-cooled input main pipe 2, and the water-cooled output main pipe 3, in order to further explain the technical solution.

[0045] The inlet of the water-cooled coil 6 is connected to the main water-cooled input pipe 2 via water-cooled branch pipe I 8, and the outlet of the water-cooled coil 6 is connected to the main water-cooled output pipe 3 via water-cooled branch pipe II 9. This arrangement facilitates the installation of the water-cooled coil 6 with the main water-cooled input pipe 2 and the main water-cooled output pipe 3, as well as the maintenance, cleaning, and replacement of the water-cooled coil 6. In addition, it isolates the corresponding cooling components in the photovoltaic module, enabling individual cooling of the solar cell 1, thereby improving cooling efficiency and quality.

[0046] In addition, both water-cooled branch pipe I8 and water-cooled branch pipe II9 are equipped with regulating valve I10 for controlling the cooling water flow, flow meter 11 for detecting the cooling water flow, and filter 12. Among them, filter 12 is used to filter impurities in the water-cooled pipeline, improve the service life of the pipeline, and ensure the working efficiency of this cooling system.

[0047] Example 4

[0048] Based on embodiments 1-3, this embodiment further defines the connection relationship between the air-cooled coil 7, the air-cooled input main pipe 4, and the air-cooled output main pipe 5, in order to further explain the technical solution.

[0049] The air inlet of the air-cooled coil 7 is connected to the air-cooled input main pipe 4 via air-cooled branch pipe I 13, and the air outlet of the air-cooled coil 7 is connected to the air-cooled output main pipe 5 via air-cooled branch pipe II 14. This arrangement facilitates the installation of the air-cooled coil 7 with the air-cooled input main pipe 4 and the air-cooled output main pipe 5, as well as the maintenance, cleaning, and replacement of the air-cooled coil 7. In addition, it isolates the corresponding cooling components in the photovoltaic module, enabling individual cooling of the solar cell 1, thereby improving cooling efficiency and quality.

[0050] In addition, both air-cooled branch pipe I13 and air-cooled branch pipe II14 are equipped with regulating valve II15 for controlling the cooling airflow and pressure sensor 16 for detecting the cooling airflow.

[0051] Example 5

[0052] Based on Examples 1-4, this example further specifies the following to achieve automated and intelligent cooling of photovoltaic modules:

[0053] A temperature sensor 17 is also arranged on the back side of the solar cell 1 (the temperature sensor 17 can be installed and fixed by a bracket). There can be multiple temperature sensors 17. The specific number and position are set according to the specifications of the solar cell 1, and ultimately ensure the accuracy of temperature detection.

[0054] The cooling system also includes a controller 18, a flow meter 11, a temperature sensor 17, a pressure sensor 16, and controller 18, regulating valve I 10, and regulating valve II 15 are connected by electrical signals (e.g., Figure 3 (As shown).

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A photovoltaic module cooling system that is easy to install, characterized in that: Set in a solar power generation system, the solar power generation system includes photovoltaic modules, and the photovoltaic modules include multiple solar cells (1). The cooling system includes a water-cooled input main pipe (2), a water-cooled output main pipe (3), an air-cooled input main pipe (4), an air-cooled output main pipe (5), and multiple cooling components. The cooling components are located on the back side of the solar cell (1). The cooling components include water-cooled coils (6) and air-cooled coils (7). One end of the water-cooled coil (6) is connected to the water-cooled input main pipe (2), and the other end is connected to the water-cooled output main pipe (3). The water-cooled coils (6) are arranged in parallel. One end of the air-cooled coil (7) is connected to the air-cooled input main pipe (4), and the other end is connected to the air-cooled output main pipe (5). The air-cooled coils (7) are arranged in parallel. The water-cooled coil (6) and the air-cooled coil (7) are fitted together.

2. The photovoltaic module cooling system with convenient installation according to claim 1, characterized in that: The water inlet of the water-cooled coil (6) is located next to the air outlet of the air-cooled coil (7), and the water outlet of the water-cooled coil (6) is located next to the air inlet of the air-cooled coil (7).

3. The photovoltaic module cooling system with convenient installation according to claim 2, characterized in that: The inlet of the water-cooled coil (6) is connected to the main water-cooled input pipe (2) through the water-cooled branch pipe I (8), and the outlet of the water-cooled coil (6) is connected to the main water-cooled output pipe (3) through the water-cooled branch pipe II (9).

4. The photovoltaic module cooling system with convenient installation according to claim 3, characterized in that: Both the water-cooled branch pipe I (8) and the water-cooled branch pipe II (9) are equipped with a regulating valve I (10) for controlling the flow of cooling water, a flow meter (11) for detecting the flow of cooling water, and a filter (12).

5. The photovoltaic module cooling system with convenient installation according to claim 4, characterized in that: The air inlet of the air-cooled coil (7) is connected to the air-cooled input main pipe (4) through the air-cooled branch pipe I (13), and the air outlet of the air-cooled coil (7) is connected to the air-cooled output main pipe (5) through the air-cooled branch pipe II (14).

6. The photovoltaic module cooling system with convenient installation according to claim 5, characterized in that: Both the air-cooled branch pipe I (13) and the air-cooled branch pipe II (14) are equipped with a regulating valve II (15) for controlling the cooling airflow and a pressure sensor (16) for detecting the cooling airflow.

7. The photovoltaic module cooling system with convenient installation according to claim 6, characterized in that: A temperature sensor (17) is also arranged on the back side of the solar cell (1).

8. The photovoltaic module cooling system with convenient installation according to claim 7, characterized in that: The cooling system also includes a controller (18), a flow meter (11), a temperature sensor (17), a pressure sensor (16), and the controller (18), regulating valve I (10), and regulating valve II (15) are connected by electrical signals.

9. The easily installable photovoltaic module cooling system according to any one of claims 1-8, characterized in that: The water-cooled input main pipe (2) is connected to the water storage tank, and a water pump (19) is installed on the water-cooled input main pipe (2); a fan (20) is installed on the air-cooled input main pipe (4); the air-cooled output main pipe (5) and the water-cooled output main pipe (3) are both connected to the heating system.

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