Crystalline silicon solar cell power generation enhancing device
By bonding flexible perovskite thin-film solar cells to the crystalline silicon solar cell back panel, the problem of degradation of power generation performance in traditional single-sided power generation technology under low light conditions is solved, and higher power generation efficiency and stability are achieved.
Patent Information
- Application Number
- CN202420236249.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-31
AI Technical Summary
Traditional single-sided crystalline silicon solar cells have significantly reduced their power generation performance when the light intensity is low or the angle is poor, resulting in a decrease in the overall system power generation and affecting the stable operation and output of the solar cell pack.
By bonding flexible, bendable perovskite thin-film solar cells to the back plate of crystalline silicon solar cells, the back space absorbs reflected light and generates power efficiently under low-light conditions.
It significantly improves the overall power generation, enhances the power generation capacity in low-illumination environments, optimizes the solar energy reception angle, and improves the stability and output performance of the system.
Smart Images
Figure CN222509225U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic cell power generation enhancement, in particular to a crystalline silicon solar cell power generation enhancement device. Background Art
[0002] In the field of solar photovoltaic power generation, crystalline silicon solar cells are the mainstream photovoltaic modules. Although they have high power generation efficiency, they generally have the limitation of single-sided power generation. When crystalline silicon solar cell arrays are deployed on a large scale, since only the front side of the cell receives sunlight for energy conversion, a large area of the back side cannot be effectively utilized. In addition, between multiple rows of crystalline silicon solar cells, part of the sunlight reflected back by the glass packaging material of the front row of cells cannot be effectively absorbed, further causing energy loss.
[0003] As solar energy resources become increasingly scarce and the requirements for solar energy utilization efficiency continue to increase, the power generation performance of traditional single-sided crystalline silicon solar cells will significantly decline under conditions of low light intensity or poor angles. This not only limits the power generation of the overall system, but also affects the stable operation and output of the solar cell group under all-weather conditions. Summary of the invention
[0004] In view of the defects in the above-mentioned background technology, the utility model provides a crystalline silicon solar cell power generation enhancement device, which makes full use of the back space of the crystalline silicon cell by attaching a flexible, bendable perovskite thin-film solar cell with good weak light response to the back panel of the crystalline silicon solar cell, absorbing and converting the sunlight reflected from the rear cell glass to the front back panel, thereby improving the overall power generation.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The utility model provides a crystalline silicon solar cell power generation enhancement device, comprising: a flexible perovskite thin-film solar cell, a crystalline silicon solar cell, a battery bracket and an MPPT controller, wherein the flexible perovskite thin-film solar cell has a large curvature and is attached to the back panel of the crystalline silicon solar cell, so as to absorb sunlight reflected from the rear row of crystalline silicon solar cells to the front row of back panels, and can still generate electricity effectively under weak light conditions.
[0007] Furthermore, it also includes a water vapor barrier film, which is tightly attached to the surface of the flexible perovskite thin-film solar cell to prevent water vapor from affecting the performance of the cell.
[0008] Furthermore, it also includes a weather-resistant adhesive, which is filled in the joints between the flexible perovskite thin-film solar cell, the crystalline silicon solar cell and the water vapor barrier film to play a fixing and sealing role, thereby ensuring a firm connection between the components.
[0009] Furthermore, it also includes a tinned busbar lead, which connects the positive and negative electrodes of the flexible perovskite thin-film solar cell and the crystalline silicon solar cell so that the two can be connected in series or in parallel and then connected to the MPPT controller for current collection and charging control.
[0010] Furthermore, the battery bracket supports and positions the crystalline silicon solar cells to adapt to sunlight exposure at different angles and optimize light utilization efficiency between the front and rear rows of batteries.
[0011] Furthermore, the MPPT controller is connected to the power output ends of the flexible perovskite thin-film solar cell and the crystalline silicon solar cell, and regulates the photovoltaic input through the maximum power point tracking technology to ensure efficient charging of the battery.
[0012] Furthermore, the flexible perovskite thin-film solar cell has the capability of generating electricity under weak light conditions.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] (1) The utility model utilizes the unused space on the back of the conventional crystalline silicon solar cell by attaching a flexible perovskite thin film solar cell to the back of the crystalline silicon solar cell to install the flexible perovskite thin film solar cell to absorb the reflected light from the back of the crystalline silicon solar cell, thereby significantly improving the power generation efficiency per unit area of the entire photovoltaic system.
[0015] (2) In a low-illuminance environment, the present invention effectively supplements the deficiencies of crystalline silicon solar cells under such conditions by leveraging the excellent weak-light power generation characteristics of flexible perovskite thin-film batteries, thereby enhancing the overall power generation capacity.
[0016] (3) The flexible perovskite thin-film solar cell in the utility model can be bent at a large angle, which is not only easy to install on the back panel of the crystalline silicon solar cell, but also the angle of the battery bracket can be adjusted as needed in actual deployment to optimize the solar energy receiving angle.
[0017] (4) The utility model improves structural stability and protective performance by providing a water vapor barrier film and a weather-resistant adhesive. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1It is an overall schematic diagram of the utility model;
[0020] Figure 2 It is a schematic diagram of the structure and circuit of the utility model;
[0021] Description of the drawings: 1. Flexible perovskite thin-film solar cell; 2. Crystalline silicon solar cell; 3. Water vapor barrier film; 4. Weather-resistant adhesive; 5. Tinned busbar leads; 6. Battery bracket; 7. MPPT controller. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the utility model and its application or use.
[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0025] Example 1
[0026] like Figure 1 and Figure 2As shown, this embodiment provides a crystalline silicon solar cell power generation enhancement device, including a flexible perovskite thin film solar cell 1, a crystalline silicon solar cell 2, a water vapor barrier film 3, a weather-resistant adhesive 4, a tinned busbar lead 5, a battery bracket 6, and an MPPT controller 7; the crystalline silicon solar cell 2 is placed on the battery bracket 6, the flexible thin film solar cell 1 is attached to the back plate of the crystalline silicon solar cell 2, the water vapor barrier film 3 is attached to the battery surface of the flexible perovskite thin film solar cell 1, and the weather-resistant adhesive 4 is filled in each attachment position. The double-sided conductive tinned copper tape 5 is used to lead out the positive and negative electrodes of the flexible thin film solar cell 1 and the crystalline silicon solar cell 2 for subsequent connection to the MPPT controller 7; when sunlight irradiates the rear row of crystalline silicon solar cells 2, the sunlight is reflected through the glass on the crystalline silicon solar cell 2 to the flexible perovskite thin film battery 1 on the back plate of the front row of crystalline silicon solar cells, so that the flexible perovskite thin film battery 1 can generate electricity effectively, avoiding wasting the available space on the back of the crystalline silicon solar cell 2 and the sunlight that is not absorbed after reflection.
[0027] Example 2
[0028] Purchase the flexible perovskite thin-film solar cell 1 and the crystalline silicon solar cell 2 on the market, prepare a number of samples required for the technical solution of this embodiment 1, and Figure 1 Place the samples and adjust the height of the test light source to ensure that the light is vertically irradiated at the center of the rear row of crystalline silicon solar cells 2 to achieve a standard sunlight intensity. At this time, use the source meter to measure the parameters of the flexible perovskite thin-film solar cell 1 and crystalline silicon solar cell 2. The results are shown in the following table:
[0029]
[0030] In summary, the flexible perovskite thin film battery 1 generates electricity effectively by utilizing the sunlight reflected by the rear crystalline silicon solar cells 2 onto the front back panel, which can reduce the large blank unused area on the back panel of the front crystalline silicon solar cells 2, thereby reducing the deployment of additional crystalline silicon solar cells 2, and the flexible perovskite thin film battery 1 can also generate electricity effectively when the light intensity is weak, and control the charging of the battery by connecting in parallel to the MPPT controller 7.
[0031] The above is only a preferred embodiment of the utility model, which only describes the basic principles and characteristics of the utility model. It should be pointed out that the utility model is not limited by the above examples. For ordinary technicians in this technical field, several improvements and deformations can be made without departing from the technical principles of the utility model. These improvements and deformations should also be regarded as the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A crystalline silicon solar cell power generation enhancement device, characterized in that: include: A flexible perovskite thin-film solar cell (1), a crystalline silicon solar cell (2), a battery bracket (6), and an MPPT controller (7), wherein the flexible perovskite thin-film solar cell (1) has a large curvature and is attached to the back plate of the crystalline silicon solar cell (2), the battery bracket (6) supports and positions the crystalline silicon solar cell (2) to adapt to sunlight exposure at different angles, and the MPPT controller (7) is connected to the power output ends of the flexible perovskite thin-film solar cell (1) and the crystalline silicon solar cell (2).
2. The crystalline silicon solar cell power generation enhancement device according to claim 1, characterized in that: It also comprises a water vapor barrier film (3), wherein the water vapor barrier film (3) is tightly attached to the surface of the flexible perovskite thin-film solar cell (1).
3. The crystalline silicon solar cell power generation enhancement device according to claim 1, characterized in that: It also includes a weather-resistant adhesive (4), which is filled in the joint between the flexible perovskite thin-film solar cell (1), the crystalline silicon solar cell (2) and the water vapor barrier film (3).
4. The crystalline silicon solar cell power generation enhancement device according to claim 1 further comprises a tin-plated busbar lead (5), wherein the tin-plated busbar lead (5) connects the positive and negative electrodes of the flexible perovskite thin-film solar cell (1) and the crystalline silicon solar cell (2).
5. According to the crystalline silicon solar cell power generation enhancement device of claim 1, the working parameters of the MPPT controller (7) are adjusted according to the change of ambient light intensity.
6. The device according to claim 1, further characterized in that: The flexible perovskite thin-film solar cell (1) has the capability of generating electricity under weak light.