Photovoltaic module and photovoltaic system

Abstract

The utility model relates to the field of photovoltaic technology, and discloses a photovoltaic assembly and a photovoltaic system. The photovoltaic module comprises a module body and a power optimization structure, the module body comprises a battery piece layer and packaging layers located on the two sides of the battery piece layer, an effective light receiving area and a blank area surrounding the effective light receiving area are formed in the module body, and the effective light receiving area corresponds to the battery piece layer; the power optimization structure is located in the blank area, and a positioning alarm structure is integrated in the power optimization structure. The photovoltaic module is a double-sided double-glass module, the power optimization structure is arranged in a blank area outside an effective light receiving area on the back surface of the module main body, and is integrated with a positioning alarm structure, so that hot spot shielding is avoided, and when the photovoltaic module fails and is abnormal, the power optimization structure can transmit an abnormal signal to control equipment of a terminal; and the control equipment feeds back a fault signal to the positioning alarm structure, so that on-site identification and positioning of the photovoltaic module are realized, and a worker can quickly find the fault module.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a photovoltaic component and a photovoltaic system. Background Art

[0002] During the operation of photovoltaic modules, the operating power of each module is not determined to work at the maximum power point, especially when the module encounters shadows or obstructions, which will cause the power of the entire string of modules to drop significantly. With the development of related technologies, modules with optimized modules can always capture the maximum power point during normal operation and can minimize power loss when the module is obstructed.

[0003] Existing photovoltaic modules with optimized modules, especially double-glass modules, are prone to various abnormal faults in actual operation. However, due to the large number of photovoltaic modules, it is usually impossible to quickly find the corresponding photovoltaic module when an abnormality occurs in a photovoltaic module. In other words, to quickly find the corresponding photovoltaic module, it is necessary to design the optimized module positions in advance during the design and construction of the photovoltaic modules, and to affix corresponding labels during construction. Once the system design array is modified, it needs to be renumbered, which undoubtedly increases the difficulty of installing the photovoltaic modules. Utility Model Content

[0004] In view of this, the utility model provides a photovoltaic component and a photovoltaic system to solve the problem that a photovoltaic component with a power optimization function in a photovoltaic system cannot be quickly identified and located when an abnormality occurs.

[0005] In the first aspect, the utility model provides a photovoltaic module, including: a module body and a power optimization structure, the module body includes a battery cell layer and a packaging layer located on both sides of the battery cell layer, the module body forms an effective light receiving area and a blank area surrounding the effective light receiving area, and the effective light receiving area corresponds to the battery cell layer; the power optimization structure is located in the blank area, and a positioning alarm structure is integrated in the power optimization structure.

[0006] Beneficial effects: The cell layers in the photovoltaic module are double-sided cell cells, and the encapsulation layer includes encapsulation glass layers on the front and back sides, that is, the photovoltaic module is a double-sided double-glass module; the power optimization structure is arranged on the back side of the module body, and is located in a blank area outside the effective light-receiving area of ​​the module body. Since the positioning alarm structure is integrated into one, while avoiding hot spot occlusion, when a photovoltaic module fails, the power optimization structure will transmit the abnormal signal to the terminal control device, and the control device will feed back the fault signal to the positioning alarm structure, so as to realize on-site identification and positioning of the photovoltaic module, and facilitate the staff to quickly find the faulty component.

[0007] In an optional implementation, the positioning alarm structure is a buzzer, which is electrically connected to the power optimization structure.

[0008] In the utility model, the positioning alarm structure uses a buzzer, which can send out a sound alarm after receiving a signal fed back by the control device, and quickly locate the photovoltaic module.

[0009] In an optional implementation, the power optimization structure includes: a power optimization module, a data monitoring module and an abnormal shutdown module.

[0010] In the utility model, when the photovoltaic module is working, it can always track the maximum power point of the module, ensuring that the power output of a single photovoltaic module is maximized; when encountering abnormal conditions such as current overload, module overtemperature, module fire, etc., the single photovoltaic module can be directly powered off, and the user can discover the abnormality through the platform.

[0011] In an optional embodiment, the blank area includes a middle area and an edge area; the middle area divides the battery layer into two parts in the length direction, and the edge area is formed at the edges of the battery layer.

[0012] In an optional implementation, the power optimization structure is configured as a long strip structure fixed in the edge region.

[0013] In the utility model, the edge area is a narrow strip area, so the power optimization structure is set as a strip structure to avoid blocking the effective light receiving area at the back, thereby increasing the power generation of the photovoltaic module.

[0014] In an optional embodiment, it also includes: a frame structure, which is arranged around the component body and fixed to the edge area; a power optimization structure is installed on the frame structure, and the width of the power optimization structure is less than or equal to the maximum width of the frame structure.

[0015] In an optional embodiment, it further includes: a fixing structure, a mounting end of the fixing structure is connected to the frame structure, and a connecting end is connected to the power optimization structure, so as to fix the power optimization structure on the frame structure.

[0016] In the utility model, the mounting end of the fixed structure is configured as a clamping structure with an opening and closing function, and the clamping structure is used to clamp and fix with the C-surface of the frame structure. The connecting end of the fixed structure extends into the mounting portion of the power optimization structure, such as a mounting gap or a mounting groove, and then the fixed structure and the power optimization structure are fixed by fasteners such as screws to achieve a stable connection between the power optimization structure and the frame structure.

[0017] In an optional implementation, the length of the fixing structure is less than or equal to the maximum width of the frame structure.

[0018] In an optional embodiment, it further includes: a junction box, which is arranged in the middle area; the battery cells located on both sides of the middle area are connected to the junction box, and the output terminal of the junction box is connected to the input terminal of the power optimization structure.

[0019] In the second aspect, the utility model also provides a photovoltaic system, comprising: a plurality of the above-mentioned photovoltaic components; and a control device, the control device being electrically connected to the output terminal of the power optimization structure; the control device being suitable for receiving a status signal emitted by the power optimization structure, and feeding back a fault signal in the status signal to the positioning alarm structure to locate the faulty photovoltaic component.

[0020] Beneficial effects: Multiple photovoltaic modules are arranged in an array to form a photovoltaic system, and the photovoltaic system is also provided with a control device to realize real-time monitoring of each photovoltaic module in the photovoltaic system. Exemplarily, the control device includes a remote receiving module and a proximal display module. The remote receiving module receives the status signal of the power optimization structure and transmits the obtained status signal to the proximal display module. The on-site staff can quickly understand the operation status of each photovoltaic module in the photovoltaic system through the proximal display module. When a photovoltaic module is abnormal, the staff can immediately understand it in the proximal display module, manually open the positioning alarm structure of the photovoltaic module, or the positioning alarm structure automatically issues an alarm, so that the staff can accurately locate the photovoltaic module among hundreds or even thousands of photovoltaic modules on site, and quickly shut down and repair it to ensure the normal operation of the photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of a photovoltaic module according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the fixing structure of an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Component body; 11. Effective light receiving area; 12. Blank area; 121. Middle area; 122. Edge area;

[0026] 2. Power optimization structure;

[0027] 3. Frame structure;

[0028] 4. Fixed structure; 41. Mounting end; 42. Connection end;

[0029] 5. Junction box. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understandable that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only some structures related to the utility model are shown in the accompanying drawings, not all structures. In the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model. Various structural schematic diagrams according to embodiments of the utility model are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified for the purpose of clear expression, and some details may be omitted. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships between them are only exemplary, and may be deviated due to manufacturing tolerances or technical limitations in practice, and those skilled in the art may design regions / layers with different shapes, sizes, and relative positions according to actual needs. In the context of the utility model, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element, or there may be an intermediate layer / element between them. In addition, if one layer / element is "on" another layer / element in one orientation, then when the orientation is reversed, the layer / element may be "below" the other layer / element.

[0031] The present embodiment provides a photovoltaic module, including a module body 1 and a power optimization structure 2. The module body 1 includes a battery cell layer and an encapsulation layer located on both sides of the battery cell layer. The module body 1 forms an effective light receiving area 11 and a blank area 12 surrounding the effective light receiving area 11. The effective light receiving area 11 corresponds to the battery cell layer; the power optimization structure 2 is located in the blank area 12, and a positioning alarm structure is integrated in the power optimization structure 2.

[0032] In this embodiment, the photovoltaic module includes a module body 1 and a power optimization structure 2 arranged on the module body 1. Specifically, the module body 1 includes a battery cell layer formed by multiple battery strings, and an encapsulation film layer and an encapsulation glass layer respectively arranged on both sides of the battery cell layer. The battery cell is a double-sided battery cell, that is, the photovoltaic module is a double-sided double-glass module; the power optimization structure 2 is arranged on the back of the module body 1, and is located in a blank area 12 outside the effective light receiving area 11 of the module body 1. Since the positioning alarm structure is integrated therein, while avoiding hot spot occlusion, when a fault occurs in the photovoltaic module, the power optimization structure 2 will transmit the abnormal signal to the terminal control device, and the control device will feed back the fault signal to the positioning alarm structure to realize on-site identification and positioning of the photovoltaic module, so that the staff can quickly find the faulty component.

[0033] In one embodiment, the positioning alarm structure is a buzzer, which is electrically connected to the power optimization structure 2. The buzzer emits a sound alarm after receiving a signal fed back by the control device, so as to quickly locate the photovoltaic module.

[0034] The above-mentioned power optimization structure 2 includes: a power optimization module, a data monitoring module and an abnormal shutdown module. The power optimization structure 2 is connected to the component body 1, wherein the power optimization module enables the component to always capture the maximum power point during operation, and effectively reduce power loss when the photovoltaic component is blocked; the data monitoring module monitors the current, voltage, maximum operating power and other data of the component online in real time, obtains the actual operation status of the photovoltaic component, and communicates these data information with the power optimization module and the abnormal shutdown module. When a fault occurs and the data information is abnormal, the abnormal shutdown module turns on and shuts off the output of the photovoltaic component to avoid the reduction of photovoltaic system power generation caused by inconsistent component attenuation.

[0035] That is to say, when the photovoltaic modules are working, they can always track the maximum power point of the modules to ensure that the output power of a single photovoltaic module is maximized; when encountering abnormal conditions such as current overload, module overheating, module fire, etc., a single photovoltaic module can be directly powered off, and users can discover abnormalities through the platform.

[0036] In one embodiment, the blank area 12 includes a middle area 121 and an edge area 122 . The middle area 121 divides the battery layer into two parts in the length direction, and the edge area 122 is formed at the edges of the battery layer.

[0037] After the area corresponding to the cell layer in the plane of the component body 1 is divided into the effective light receiving area 11, the other areas in the plane of the component body 1 are blank areas 12; Figure 1As shown, the cell layer is divided into two parts, upper and lower, each part includes a cell string formed by 6 strings of cells connected in series, and the cell string formed in series is connected by a bus bar in the blank area 12 in the middle, that is, the middle area 121; the edges of the entire component body 1 have narrow blank areas 12 where no cells are set, that is, edge areas 122. The plane area of ​​the component body 1 consists of an effective light receiving area 11 and a blank area 12.

[0038] Based on the above solution, the power optimization structure 2 is set as a long strip structure fixed in the edge area 122. As the edge area 122 is a narrow long strip area, the power optimization structure 2 is set as a long strip structure to avoid blocking the effective light receiving area 11 and improve the power generation of the photovoltaic module.

[0039] In one embodiment, Figure 1 As shown, the photovoltaic module also includes a frame structure 3, which is arranged around the module body 1 and fixed to the edge area 122; the power optimization structure 2 is installed on the frame structure 3, and the width of the power optimization structure 2 is less than or equal to the maximum width of the frame structure 3. The frame structure 3 is divided into two long frames on the left and right and two short frames on the top and bottom. The frame is a C-shaped aluminum frame, including side A, side B and side C. Side A is the side close to the notch of the frame, that is, the front side of the photovoltaic module, side B is the side of the photovoltaic module, and side C is parallel to the back of the photovoltaic module, and usually has a larger width than side A. In this embodiment, the power optimization structure 2 is fixed on the C side of the frame structure 3, and the width of the power optimization structure 2 is less than or equal to the width of the C side, which will not block the effective light-receiving area 11 on the back of the module, and the installation stability is relatively high.

[0040] In one embodiment, Figure 2 As shown, the photovoltaic module also includes a fixed structure 4, the mounting end 41 of the fixed structure 4 is connected to the frame structure 3, and the connecting end 42 is connected to the power optimization structure 2, so as to fix the power optimization structure 2 on the frame structure 3. The mounting end 41 of the fixed structure 4 is set as a clamping structure with an opening and closing function, and the clamping structure is used to clamp and fix with the C surface of the frame structure 3, and the connecting end 42 of the fixed structure 4 extends into the mounting part of the power optimization structure 2, such as the mounting gap or the mounting groove, and then the fixed structure 4 is fixed to the power optimization structure 2 by fasteners such as screws, so as to achieve a stable connection between the power optimization structure 2 and the frame structure 3.

[0041] Furthermore, the length of the fixing structure 4 is less than or equal to the maximum width of the frame structure 3. Figure 2 As shown, the mounting end 41 and the connecting end 42 of the fixing structure 4 are folded and arranged, and the structure is compact. Figure 2The length of the fixing structure 4 in the lateral direction is smaller than the maximum width of the frame structure 3 , that is, the width of the C surface, so as to ensure that the fixing structure 4 does not form additional shielding to the component body 1 .

[0042] like Figure 1 As shown, the photovoltaic module also includes a junction box 5, which is arranged in the middle area 121; the cells located on both sides of the middle area 121 are connected to the junction box 5, and the output terminals of the junction box 5 are connected to the input terminals of the power optimization structure 2. Three junction boxes 5 are arranged at intervals in the blank middle area 121 on the back of the photovoltaic module, without blocking the cells of the module body 1, and two battery strings are connected to one junction box 5 on the upper and lower sides, and the output terminals of the junction box 5 are connected to the power optimization structure 2.

[0043] This embodiment also provides a photovoltaic system, including: a plurality of the above-mentioned photovoltaic components, and a control device, wherein the control device is electrically connected to the output terminal of the power optimization structure 2; the control device is suitable for receiving a status signal emitted by the power optimization structure 2, and feeding back a fault signal in the status signal to the positioning alarm structure to locate the faulty photovoltaic component.

[0044] A plurality of photovoltaic modules are arranged in an array to form a photovoltaic system, and a control device is also provided in the photovoltaic system to realize real-time monitoring of each photovoltaic module in the photovoltaic system. Exemplarily, the control device includes a remote receiving module and a proximal display module. The remote receiving module receives the status signal of the power optimization structure 2 and transmits the obtained status signal to the proximal display module. The on-site staff can quickly understand the operation status of each photovoltaic module in the photovoltaic system through the proximal display module. When a photovoltaic module is abnormal, the staff can immediately understand it through the proximal display module, manually open the positioning alarm structure of the photovoltaic module, or the positioning alarm structure automatically issues an alarm, so that the staff can accurately locate the photovoltaic module among hundreds or even thousands of photovoltaic modules on site, and quickly shut down and repair it to ensure the normal operation of the photovoltaic system.

[0045] In the above description, the technical details of the patterning and etching of each layer are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above. In addition, although the various embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage.

[0046] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A photovoltaic module, characterized in that: include: A component body (1), the component body (1) comprising a battery cell layer and a packaging layer located on both sides of the battery cell layer; the component body (1) forms an effective light receiving area (11) and a blank area (12) surrounding the effective light receiving area (11), the effective light receiving area (11) corresponding to the battery cell layer; A power optimization structure (2), the power optimization structure (2) is located in the blank area (12), and a positioning alarm structure is integrated in the power optimization structure (2).

2. The photovoltaic module according to claim 1, characterized in that: The positioning alarm structure is a buzzer, which is electrically connected to the power optimization structure (2).

3. The photovoltaic module according to claim 2, characterized in that: The power optimization structure (2) comprises: a power optimization module, a data monitoring module and an abnormal shutdown module.

4. The photovoltaic module according to claim 1, characterized in that: The blank area (12) comprises a middle area (121) and an edge area (122); the middle area (121) divides the battery layer into two parts in the length direction, and the edge area (122) is formed at the edge positions of the four sides of the battery layer.

5. The photovoltaic module according to claim 4, characterized in that: The power optimization structure (2) is configured as a long strip structure fixed in the edge region (122).

6. The photovoltaic module according to claim 5, characterized in that: Also includes: A frame structure (3), wherein the frame structure (3) is arranged around the component body (1) and fixed to the edge area (122); the power optimization structure (2) is installed on the frame structure (3), and the width of the power optimization structure (2) is less than or equal to the maximum width of the frame structure (3).

7. The photovoltaic module according to claim 6, characterized in that: Also includes: A fixing structure (4), wherein the mounting end (41) of the fixing structure (4) is connected to the frame structure (3), and the connecting end (42) is connected to the power optimization structure (2), so as to fix the power optimization structure (2) on the frame structure (3).

8. The photovoltaic module according to claim 7, characterized in that: The length of the fixing structure (4) is less than or equal to the maximum width of the frame structure (3).

9. The photovoltaic module according to claim 4, characterized in that: Also includes: A junction box (5), the junction box (5) being arranged in the middle area (121); the battery cells located on both sides of the middle area (121) are connected in the junction box (5), and the output terminal of the junction box (5) is connected to the input terminal of the power optimization structure (2).

10. A photovoltaic system, characterized in that: include: A plurality of photovoltaic modules according to any one of claims 1 to 9; and a control device, the control device being electrically connected to an output terminal of the power optimization structure (2); the control device being adapted to receive a status signal emitted by the power optimization structure (2), and to feed back a fault signal in the status signal to a positioning alarm structure, so as to locate a faulty photovoltaic component.

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