Intelligent interconnected photovoltaic module

Abstract

An intelligent interconnected photovoltaic module comprises a photovoltaic module body and a frame, the photovoltaic module body comprises a battery piece and a back plate which are attached to each other, a plurality of mounting grooves are formed in the surface, attached to the battery piece, of the back plate, and openings in the two sides of each mounting groove are communicated to the end faces of the two sides of the back plate respectively. And a plurality of temperature sensors are fixedly arranged in the mounting groove. According to the utility model, the battery piece is stable, and the temperature monitoring performance of the battery piece is good.

Description

Technical Field

[0001] The utility model relates to an intelligent interconnected photovoltaic component, belonging to the technical field of solar cells. Background Art

[0002] Photovoltaic modules are devices that directly convert solar energy into electrical energy. They are environmentally friendly, safe, and economical, and have become the focus of future energy development. With the development of technology, intelligent photovoltaic modules have emerged. The emergence of intelligent photovoltaic modules has greatly improved the power generation efficiency, stability, reliability, and safety of photovoltaic power stations.

[0003] Intelligent photovoltaic modules are interconnected with controllers to monitor various parameters of photovoltaic modules and promptly report the working conditions or situations of photovoltaic modules to the controller, which is conducive to adjusting the status of photovoltaic modules in actual application. One of the parameters monitored is the temperature of photovoltaic modules. Through monitoring, the efficiency attenuation caused by continuous operation of photovoltaic modules under high humidity and high heat conditions can be avoided, thereby improving the service life of photovoltaic modules.

[0004] Photovoltaic modules are generally composed of a photovoltaic module body and a frame for receiving solar energy and generating electricity. For single-glass photovoltaic modules, the photovoltaic module body is composed of glass, cells, backplanes, etc. The backplane and the cells are arranged in a close relationship to ensure the stability of the cell installation. As for the temperature sensor used to monitor the temperature, considering that the cells and the backplane inside the photovoltaic module are in close contact with each other, there is no large space between the two to install the temperature sensor. Therefore, the temperature sensor is usually evenly distributed on the back of the photovoltaic module to measure the temperature of the cells in the module. For example, the patent with announcement number CN205178985U involves the arrangement of a temperature sensor on the back of the photovoltaic module. This temperature measurement method requires the use of a heat exchange model to convert the temperature of the backplane of the module to the temperature of the cells inside the module. During the conversion process, the ambient temperature, wind speed, and wind direction need to be input for correction. In this way, since it is difficult to take into account all factors affecting the temperature, it is difficult to accurately establish a heat exchange model, there is a large error, and the monitoring performance is relatively poor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a smart interconnected photovoltaic module with stable cells and good monitoring performance of cell temperature.

[0006] A smart interconnected photovoltaic module comprises a photovoltaic module body and a frame. The photovoltaic module body comprises a battery cell and a back plate that are bonded to each other. A plurality of mounting grooves are arranged on the surface where the back plate and the battery cell are bonded. The openings on both sides of the mounting grooves are respectively connected to the end surfaces on both sides of the back plate. A plurality of temperature sensors are fixedly arranged in the mounting grooves.

[0007] Preferably, the mounting groove is also fixedly provided with a plurality of supporting parts for supporting the battery cell.

[0008] Preferably, the frame has a packaging groove which is clamped and fixed with the photovoltaic component body; a partition is provided in the packaging groove, which divides the packaging groove into a packaging area and a wiring area, and the partition and the side of the photovoltaic component body facing the partition are respectively provided with interconnected female connectors and male connectors, and the wires of the temperature sensor include a line segment one connected to the female connector and a line segment two connected to the male connector.

[0009] Preferably, the partition has a positioning surface facing the side of the photovoltaic component body and a making way groove connected to the positioning surface and making way for the male connector.

[0010] Preferably, the female plug connector is arranged at the bottom of the clearance groove or at the side of the partition facing away from the photovoltaic component body.

[0011] Preferably, the frame is also connected with a support positioning portion located on the side of the packaging groove opening for vertically positioning and supporting the photovoltaic component body.

[0012] Preferably, the back plate includes a planar insertion portion and a sinking portion connected to the bottom of the planar insertion portion, the mounting groove is arranged on the planar insertion portion, and the mounting groove is sunken into the sinking portion corresponding to the position of the sinking portion and forms an installation area, and the temperature sensor is installed in the installation area.

[0013] Preferably, the sunken portion is located above the bottom of the frame.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1: In the utility model, the back plate and the battery cell are arranged in close contact, the battery cell is stable, a mounting groove is provided on the back plate and used to install the temperature sensor, so that the temperature sensor can directly monitor the temperature of the battery cell, the monitoring accuracy is high, and the monitoring performance of the photovoltaic module is good.

[0016] 2: In the utility model, a partition is provided in the packaging groove of the frame, the partition divides the packaging groove into a packaging area and a wiring area, the partition and the side of the photovoltaic module body facing the partition are respectively provided with a plug-in female head and a plug-in male head connected to each other, and the wire of the temperature sensor includes a wire segment 1 connected to the plug-in female head and a wire segment 2 connected to the plug-in male head. With this structure, when the photovoltaic module body is installed on the frame, it is less affected by the entire wire and the packaging is simple.

[0017] 3: In the utility model, the back plate includes a plane insertion part and a sinking part connected to the bottom of the plane insertion part, the installation groove is arranged on the plane insertion part, and the installation groove corresponding to the part of the sinking part is sunk into the sinking part and forms an installation area, and the temperature sensor is installed in the installation area. With this structure, when the temperature sensor is installed on the back plate, there is no obvious increase in the height of the installation groove, so the height and weight of the frame will not be significantly increased, which is conducive to controlling the weight of the entire photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the photovoltaic module in Example 1;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 is a schematic structural diagram of the backplane in Example 2;

[0021] Figure 4 This is a schematic diagram of the structure of the photovoltaic module in Example 1. DETAILED DESCRIPTION

[0022] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0023] Embodiment 1: A smart interconnected photovoltaic module, such as Figure 1-2 As shown, it includes a photovoltaic module body 1 and a frame 2. The photovoltaic module body 1 is used to receive solar energy and generate electricity. It includes glass, battery cells 11 and a back panel 12. The back panel and the battery cells are arranged in close contact to ensure the installation stability of the battery cells. The back panel 12 is a flat plate. The frame 2 has a packaging groove 21 that is clamped and fixed to the photovoltaic module body 1. The upper and lower sides of the photovoltaic module body 1 are filled in the packaging groove 21 with sealant.

[0024] A plurality of mounting grooves 121 are provided on the surface where the back plate 12 and the battery cell 11 are in contact, and a plurality of temperature sensors 3 for monitoring the temperature of the battery cell 11 are fixedly provided in the mounting grooves 121. The plurality of mounting grooves 121 are arranged at equal intervals. When the temperature sensors 3 are arranged on the plurality of mounting grooves 121, they are presented in the form of a matrix. The openings on both sides of the mounting grooves 121 are respectively connected to the end faces on both sides of the back plate 12, so as to facilitate the connection of the wires of the temperature sensor 3 to the external power supply to obtain long-term and stable power supply from the external power supply.

[0025] By opening the mounting groove 121 on the back plate 12 and installing the temperature sensor 3 therein, the temperature sensor 3 can directly monitor the temperature of the battery cell 11 , with high monitoring accuracy and good monitoring performance of the photovoltaic module.

[0026] The mounting groove 121 is further fixedly provided with a plurality of supporting portions 122 for supporting the battery cell 11 , so as to further reduce deformation of the battery cell 11 at the mounting groove 121 .

[0027] Since the temperature sensor 3 is to be arranged inside the photovoltaic module, when the photovoltaic module is packaged, it is necessary to consider the adverse effect of the wires on the temperature sensor 3 when the photovoltaic module body 1 is installed on the frame 2. For this reason, a partition 22 is arranged in the packaging groove 21, and the partition 22 divides the packaging groove 21 into a packaging area 211 and a wiring area 212. The partition 22 and the side of the photovoltaic module body 1 facing the partition 22 are respectively provided with interconnected plug females 23 and plug males 13. The wires of the temperature sensor 3 include a line segment 1 3-1 connected to the plug female 23 and a line segment 2 3-2 connected to the plug male 13. The packaging area 211 is used to insert the photovoltaic module body 1, and the wiring area 212 is used to arrange the line segment 1 3-1 connected to the plug female 23. The plug male 13 is connected to the temperature sensor 3 through the line segment 2 3-2.

[0028] This design divides the wire of the temperature sensor into two sections, one with a plug-in female connector 23 and the other with a plug-in male connector 13. When the photovoltaic module body 1 is installed on the frame 2, the plug-in female connector 23 is plugged into the plug-in male connector 13, and the temperature sensor 3 can receive power from an external power source. This segmented structure is less affected by the entire wire when the photovoltaic module body 1 is installed on the frame 2, and the packaging is simple.

[0029] The partition 22 has a positioning surface 221 facing the side of the photovoltaic module body 1 and a clearance groove 222 connected to the positioning surface 221 and giving way to the plug male connector 13. The positioning surface 221 limits the insertion depth of the photovoltaic module body 1 when it is installed on the frame 2, preventing the plug male connector 13 from damaging the plug female connector 23 due to excessive insertion depth when it is inserted into the plug female connector 23. The plug female connector 23 can be limited to the bottom of the clearance groove 222. In this embodiment, the plug female connector 23 is arranged on the side of the partition 22 facing away from the photovoltaic module body 1.

[0030] After the male connector 13 is plugged into the female connector 23, in order to prevent the male connector 13 from being deformed due to the weight of the entire photovoltaic component body 1, the frame 2 is also connected to a support positioning portion 4 located on the side of the packaging groove 21 for vertically positioning and supporting the photovoltaic component body 1.

[0031] Embodiment 2: Generally speaking, affected by the size of the temperature sensor 3, even a miniature temperature sensor 3 will cause the thickness of the back plate 12 to be relatively thick, often reaching tens of millimeters. Correspondingly, the height of the mounting groove 121 is also relatively large, and the frame 2 is often a relatively strong and durable metal frame, so the weight of the entire frame 2 will also be relatively large.

[0032] Therefore, in this embodiment, the back plate 12 is designed to no longer use the flat plate structure in the embodiment 1. Figure 3-4 As shown, the back plate 12 includes a plane insertion portion 123 and a sinking portion 124 connected to the bottom of the plane insertion portion 123, the mounting groove 121 is arranged on the plane insertion portion 123, and the mounting groove 121 is sunken into the sinking portion 124 corresponding to the position of the sinking portion 124 and forms an installation area, and the temperature sensor 3 is installed in the installation area. With this structure, when the back plate 12 is used to install the temperature sensor 3, there is no obvious requirement for increasing the height of the mounting groove 121, so the height and weight of the frame 2 will not be significantly increased, which is conducive to controlling the weight of the entire photovoltaic module.

[0033] The sunken portion 124 is located above the bottom of the frame 2 , so that the sunken portion 124 does not affect the installation of the frame 2 on the installation bracket on site.

[0034] The above embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall within the protection scope of the utility model, and the technical contents of the utility model for protection have been fully recorded in the claims.

Claims

1. A smart interconnected photovoltaic module, comprising a photovoltaic module body (1) and a frame (2), wherein the photovoltaic module body (1) comprises a cell sheet (11) and a back sheet (12) that are bonded together, and wherein: A plurality of mounting grooves (121) are provided on the surface of the back plate (12) that is in contact with the battery cell (11); openings on both sides of the mounting grooves (121) respectively lead to the end surfaces on both sides of the back plate (12); and a plurality of temperature sensors (3) are fixedly arranged in the mounting grooves (121).

2. The intelligent interconnected photovoltaic module according to claim 1, characterized in that: The mounting groove (121) is also fixedly provided with a plurality of support portions (122) for supporting the battery sheet (11).

3. The intelligent interconnected photovoltaic assembly according to claim 1, characterized in that: The frame (2) has a packaging groove (21) that is clamped and fixed to the photovoltaic module body (1); A partition (22) is provided in the packaging groove (21), and the partition (22) divides the packaging groove (21) into a packaging area (211) and a wiring area (212). The partition (22) and the side of the photovoltaic module body (1) facing the partition (22) are respectively provided with a female plug (23) and a male plug (13) connected to each other. The electric wire of the temperature sensor (3) includes a line segment 1 connected to the female plug (23) and a line segment 2 connected to the male plug (13).

4. The intelligent interconnected photovoltaic assembly according to claim 3, characterized in that: The partition (22) has a positioning surface (221) facing the side of the photovoltaic component body (1) and a clearance groove (222) connected to the positioning surface (221) and making way for the plug-in male connector (13).

5. The intelligent interconnected photovoltaic assembly according to claim 4, characterized in that: The female plug connector (23) is arranged at the bottom of the clearance groove (222) or at the side of the partition plate (22) facing away from the photovoltaic assembly body (1).

6. The intelligent interconnected photovoltaic assembly according to claim 3, characterized in that: The frame (2) is also connected to a support positioning portion (4) located on the side of the notch of the packaging slot (21) and used for vertically positioning and supporting the photovoltaic component body (1).

7. The intelligent interconnected photovoltaic assembly according to claim 1, characterized in that: The back plate (12) comprises a planar insertion portion (123) and a sinking portion (124) connected to the bottom of the planar insertion portion (123); the mounting groove (121) is arranged on the planar insertion portion (123); and the mounting groove (121) is sunken into the sinking portion (124) at a position corresponding to the sinking portion (124) to form a mounting area; the temperature sensor (3) is mounted in the mounting area.

8. The intelligent interconnected photovoltaic assembly according to claim 7, characterized in that: The sinking portion (124) is located above the bottom of the frame (2).

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