Photovoltaic module and power generation device
By setting insulating isolation parts between the cell strings of the photovoltaic modules, the problems of increasing size and reducing power generation efficiency caused by the cell string gap are solved, and more efficient power generation and reduced production costs are achieved.
Patent Information
- Application Number
- CN202420712924.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-04-08
AI Technical Summary
Due to the gap between the battery strings, existing photovoltaic modules have increased overall size, reduced power generation efficiency per unit area, increased material usage, and increased production costs.
An insulating isolation member is provided between adjacent battery strings to physically isolate the battery strings, reduce the spacing between the battery strings, and realize that the battery strings are as close as possible, thereby reducing the overall size of the photovoltaic module.
Reduce the battery string spacing under insulation conditions, improve the power generation efficiency per unit area of photovoltaic modules, reduce the materials required for production, reduce production costs, and achieve cost reduction and efficiency improvement.
Smart Images
Figure CN222776530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic component and a power generation device. Background Art
[0002] At present, photovoltaic modules mainly use glass or weather-resistant polymer materials as the front and back panels, and the encapsulation film uses EVA or POE film, and finally the modules are laminated and formed by high temperature and pressure of a laminator. When the existing photovoltaic modules are laid out, in order to avoid short circuits between battery strings, a gap of 1.5mm~2mm is generally left between adjacent battery strings. Each string of parallel battery strings will have a gap, such as the currently commonly used 72-panel photovoltaic modules have 10 gaps. In traditional technology, the gap left on the photovoltaic module will cause the overall size of the photovoltaic module to increase, affecting the power generation efficiency per unit area of the photovoltaic module, and reducing the power generation efficiency of the photovoltaic module per unit area. At the same time, the increase in the overall size of the photovoltaic module will lead to an increase in the unit usage of materials such as glass and backplane film, and an increase in production costs. Utility Model Content
[0003] Based on this, it is necessary to provide a photovoltaic module. The photovoltaic module of the utility model can reduce the cell string spacing under the condition of ensuring insulation, improve the power generation efficiency per unit area of the photovoltaic module, reduce the materials required for the production of the photovoltaic module, reduce the production cost, and achieve cost reduction and efficiency improvement.
[0004] An embodiment of the present application provides a photovoltaic module.
[0005] A photovoltaic module comprises at least an insulating spacer and a plurality of battery strings, wherein the plurality of battery strings are sequentially distributed and connected in series and / or in parallel, and there are intervals between adjacent battery strings, wherein the insulating spacer is arranged in the interval, and the insulating spacer is used to separate adjacent battery strings.
[0006] In some embodiments, the interval between adjacent battery strings is greater than the thickness of the insulating spacer.
[0007] In some embodiments, the thickness of the insulating spacer is 1.2 mm to 1.8 mm.
[0008] In some embodiments, the interval between adjacent battery strings is 1.5 mm to 2.0 mm.
[0009] In some embodiments, the insulating spacer penetrates the gap, and one side of the insulating spacer extends to the front side of one of the battery strings, and the other side of the insulating spacer opposite to the battery string extends to the back side of the other battery string.
[0010] In some embodiments, one side edge of the insulating spacer extends from a front side of one of the battery strings by a distance of 2 mm to 10 mm.
[0011] In some embodiments, the other side of the insulating spacer extends at a distance of 2 mm to 10 mm on the back side of another battery string.
[0012] In some embodiments, the insulating spacer is one or more of EVA film, EPE film and POE film.
[0013] In some embodiments, the photovoltaic module also includes a panel, a backplane, a first packaging film and a second packaging film, and the panel, the first packaging film, the second packaging film and the backplane are stacked in sequence, wherein a plurality of the battery strings are encapsulated between the first packaging film and the second packaging film.
[0014] An embodiment of the present application also provides a power generation device.
[0015] A power generation device comprises the photovoltaic module.
[0016] The photovoltaic module, by providing insulating spacers between adjacent battery strings to physically isolate adjacent battery strings, enables adjacent battery strings to be as close as possible, reduces the gap between adjacent battery strings, and reduces the overall size of the photovoltaic module. The photovoltaic module can reduce the battery string spacing under the condition of ensuring insulation, improve the power generation efficiency per unit area of the photovoltaic module, reduce the materials required for the production of photovoltaic modules, reduce production costs, and achieve cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0018] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0019] Figure 1 This is a schematic diagram of a photovoltaic assembly according to an embodiment of the utility model;
[0020] Figure 2 It is a side schematic diagram of a photovoltaic assembly according to an embodiment of the utility model.
[0021] Description of Reference Numerals
[0022] 10. Photovoltaic module; 100. Insulation spacer; 200. Battery string. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0027] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0029] The embodiment of the present application provides a photovoltaic module 10 to solve the problem that the photovoltaic module power generation efficiency per unit area is reduced due to the setting of the battery string gap in the conventional technology, and the overall size of the photovoltaic module is increased due to the setting of the battery string gap, resulting in an increase in the unit amount of materials such as glass and backplane film, and an increase in production cost. The photovoltaic module 10 will be described below in conjunction with the accompanying drawings.
[0030] The photovoltaic assembly 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 The schematic diagram of the structure of the photovoltaic module 10 provided in the embodiment of the present application. In order to more clearly illustrate the structure of the photovoltaic module 10, the photovoltaic module 10 will be introduced in conjunction with the accompanying drawings below.
[0031] For example, see Figure 1 As shown, a photovoltaic module 10 at least includes an insulating spacer 100 and a plurality of battery strings 200. The plurality of battery strings 200 are sequentially distributed and connected in series and / or in parallel. There is a gap between adjacent battery strings 200. An insulating spacer 100 is provided in the gap between adjacent battery strings 200. The insulating spacer 100 is used to separate adjacent battery strings 200. It should be noted that each battery string 200 includes a plurality of battery cells, and adjacent battery cells are connected by metal interconnection strips.
[0032] The photovoltaic module 10 mentioned above physically isolates adjacent battery strings 200 by providing insulating spacers 100 between adjacent battery strings 200, thereby enabling adjacent battery strings 200 to be as close together as possible, reducing the gaps between adjacent battery strings 200, and reducing the overall size of the photovoltaic module.
[0033] In some embodiments, the interval between adjacent battery strings 200 is greater than the thickness of the insulating spacer 100 .
[0034] In some of the embodiments, the thickness of the insulating spacer 100 is 1.2 mm to 1.8 mm. For example, in one specific embodiment, the thickness of the insulating spacer 100 is 1.2 mm. In another specific embodiment, the thickness of the insulating spacer 100 is 1.8 mm. It is not difficult to understand that in other specific embodiments, the thickness of the insulating spacer 100 can also be 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm or other values. Compared with traditional photovoltaic modules, the present application can reduce the cell string spacing to the limit, and the limit value depends on the thickness of the insulating spacer 100.
[0035] In some of the embodiments, the interval between adjacent battery strings 200 is 1.5 mm to 2.0 mm. The interval between adjacent battery strings 200 is slightly larger than the thickness of the insulating spacer 100. For example, in one specific embodiment, the interval between adjacent battery strings 200 is 1.5 mm. In another specific embodiment, the interval between adjacent battery strings 200 is 2.0 mm. It is not difficult to understand that in other specific embodiments, the interval between adjacent battery strings 200 can also be 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or other values. The interval between adjacent battery strings 200 can be set according to the thickness of the insulating spacer 100.
[0036] In some of the embodiments, the insulating spacer 100 is disposed in the interval between adjacent battery strings 200 , and one side of the insulating spacer 100 extends to the front side of one of the battery strings 200 , and the other side of the insulating spacer 100 extends to the back side of another battery string 200 .
[0037] In some embodiments, the distance that one side of the insulating spacer 100 extends on the front of one of the battery strings 200 is 2 mm to 10 mm. For example, in one specific embodiment, the distance that one side of the insulating spacer 100 extends on the front of one of the battery strings 200 is 2 mm. In another specific embodiment, the distance that one side of the insulating spacer 100 extends on the front of one of the battery strings 200 is 2 mm. It is not difficult to understand that in other specific embodiments, the distance that one side of the insulating spacer 100 extends on the front of one of the battery strings 200 can also be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or other values.
[0038] In some embodiments, the other side of the insulating spacer 100 extends at a distance of 2 mm to 10 mm on the back of the other battery string 200. For example, in one specific embodiment, the other side of the insulating spacer 100 extends at a distance of 2 mm on the back of the other battery string 200. In another specific embodiment, the other side of the insulating spacer 100 extends at a distance of 2 mm on the back of the other battery string 200. It is not difficult to understand that in other specific embodiments, the other side of the insulating spacer 100 extends at a distance of 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or other values.
[0039] In a specific embodiment, preferably, the distance that one side of the insulating spacer 100 extends on the front side of one of the battery strings 200 and the distance that the other side of the insulating spacer 100 opposite to the other battery string 200 extends on the back side of the other battery string 200 are equal. Figure 2 As shown, Figure 2 This is a side view of a photovoltaic module 10 according to an embodiment of the present invention, in which the insulating spacer 100 between adjacent battery strings 200 is approximately in a "Z" shape. It is not difficult to understand that in other embodiments, the insulating spacer 100 can be wrapped around the edge of one battery string 200 between adjacent battery strings 200, and the edge of the other battery string 200 is not processed, and the purpose of insulation isolation can also be achieved in this case.
[0040] In some embodiments, the insulating spacer 100 is one or more of EVA film, EPE film and POE film. EVA film, EPE film and POE film have good light transmittance and weather resistance. The insulating spacer 100 in the present application can also be selected from other types of films that can achieve insulation, light transmittance and weather resistance.
[0041] In some embodiments, the photovoltaic module 10 further includes a panel, a back sheet, a first encapsulation film, and a second encapsulation film. The panel, the first encapsulation film, the second encapsulation film, and the back sheet are stacked and distributed in sequence, wherein a plurality of battery strings 200 are encapsulated between the first encapsulation film and the second encapsulation film. The panel, the first encapsulation film, the second encapsulation film, and the back sheet are stacked and distributed in sequence and then connected through a lamination process.
[0042] In some of the embodiments, the front panel and the back panel can be glass panels respectively.
[0043] An embodiment of the present application also provides a power generation device.
[0044] A power generation device includes the photovoltaic assembly 10 mentioned above.
[0045] In summary, the photovoltaic module 10 can reduce the cell string spacing under the condition of ensuring insulation, improve the power generation efficiency per unit area of the photovoltaic module, reduce the materials required for the production of photovoltaic modules, reduce production costs, and achieve cost reduction and efficiency improvement. In addition, the photovoltaic module of the present application has low process complexity and simple procedures during production.
[0046] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0048] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A photovoltaic module (10), characterized in that: At least comprising an insulating spacer (100) and a plurality of battery strings (200), wherein the plurality of battery strings (200) are sequentially distributed and connected in series and / or in parallel, and there is a gap between adjacent battery strings (200), and the insulating spacer (100) is arranged in the gap between adjacent battery strings (200), and the insulating spacer (100) is used to separate adjacent battery strings (200).
2. The photovoltaic assembly (10) according to claim 1, characterized in that: The interval between adjacent battery strings (200) is greater than the thickness of the insulating spacer (100).
3. The photovoltaic assembly (10) according to claim 2, characterized in that: The thickness of the insulating spacer (100) is 1.2 mm to 1.8 mm.
4. The photovoltaic assembly (10) according to claim 2, characterized in that: The interval between adjacent battery strings (200) is 1.5 mm to 2.0 mm.
5. The photovoltaic module (10) according to any one of claims 1 to 4, characterized in that: The insulating spacer (100) is arranged in the interval between adjacent battery strings (200), and one side edge of the insulating spacer (100) extends to the front side of one of the battery strings (200), and the other side edge of the insulating spacer (100) opposite to the other battery string (200) extends to the back side of another battery string (200).
6. The photovoltaic assembly (10) according to claim 5, characterized in that: The distance that one side edge of the insulating spacer (100) extends on the front side of one of the battery strings (200) is 2 mm to 10 mm.
7. The photovoltaic assembly (10) according to claim 5, characterized in that: The distance that the other side edge of the insulating spacer (100) opposite to the other battery string (200) extends on the back side is 2 mm to 10 mm.
8. The photovoltaic module (10) according to any one of claims 1 to 4, 6 to 7, characterized in that: The insulating spacer (100) is one or more of an EVA film, an EPE film and a POE film.
9. The photovoltaic module (10) according to any one of claims 1 to 4, 6 to 7, characterized in that: The photovoltaic module (10) further comprises a panel, a back panel, a first encapsulation film and a second encapsulation film, wherein the panel, the first encapsulation film, the second encapsulation film and the back panel are stacked in sequence, wherein a plurality of the battery strings (200) are encapsulated between the first encapsulation film and the second encapsulation film.
10. A power generation device, characterized in that: A photovoltaic module (10) comprising any one of claims 1 to 9.