Crystalline silicon solar cell attenuation repairing device

Abstract

The utility model provides a crystalline silicon solar cell attenuation repairing device, which belongs to the technical field of photovoltaic cell attenuation repairing and comprises a flexible perovskite thin film cell, a crystalline silicon solar cell, a film, an MPPT (maximum power point tracking) controller and a weather-proof waterproof butyl rubber tape. The flexible perovskite thin-film cell is combined with crystalline silicon light-receiving surface glass through a film, and the effective area of the flexible perovskite thin-film cell can completely cover the effective area of the crystalline silicon solar cell. According to the utility model, by using the characteristics of portability, high efficiency, convenient and rapid deployment and certain light transmission of the flexible perovskite thin-film solar cell, the flexible perovskite thin-film cell covers the light receiving surface of the crystalline silicon cell with the damaged efficiency; and the overall efficiency of the system can be improved on the basis of not changing the original crystalline silicon solar cell power generation system while cooperative power generation can be realized, so that the damaged crystalline silicon solar cell can be repaired at the lowest cost.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell attenuation repair, in particular to a crystalline silicon solar cell attenuation repair device. Background Art

[0002] The construction of large-scale crystalline silicon solar power stations is becoming more and more common. However, during the long-term operation of these power stations, some crystalline silicon solar cells have significantly decreased their photoelectric conversion efficiency due to adverse factors such as light, thermal stress, and charge recombination, which seriously affects the power generation performance and economic benefits of the entire power station. The traditional method of replacing or refurbishing damaged crystalline silicon cells is costly and has high engineering complexity, so there is an urgent need for a simple and efficient repair technology to restore the original performance of such cells.

[0003] The existing technology has not yet fully solved the problem of how to effectively improve the photoelectric conversion efficiency of the attenuated cell without changing the overall structure of the crystalline silicon solar cell system. In view of this, the utility model proposes a crystalline silicon solar cell attenuation repair technology solution based on high-performance flexible perovskite thin film cells to address this technical problem. 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 attenuation repair device. By utilizing the characteristics of flexible perovskite thin-film solar cells, which are light, efficient, easy and quick to deploy and have a certain light transmittance, the flexible perovskite thin-film solar cells are covered on the light-receiving surface of the crystalline silicon cell with impaired efficiency. On the basis of not changing the original crystalline silicon solar cell power generation system, coordinated power generation is achieved, and the overall efficiency of the system is improved, thereby repairing the damaged crystalline silicon solar cells at the lowest cost.

[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 attenuation repair device, comprising a crystalline silicon solar cell, a flexible perovskite thin film battery, an adhesive layer, an MPPT controller and a junction box; the MPPT controller is electrically connected to the flexible perovskite thin film battery, and the junction box is connected to both the crystalline silicon solar cell and the MPPT controller; the flexible perovskite thin film battery is light-transmitting and absorbs light energy in the blue-green to ultraviolet band; the crystalline silicon solar cell absorbs light energy in the red to near-infrared band;

[0007] The bonding layer is arranged on the light-receiving surface of the crystalline silicon solar cell, and the bonding layer includes a film. The flexible perovskite thin film battery is covered on the crystalline silicon light-receiving surface glass of the crystalline silicon solar cell through the film to form a laminated structure.

[0008] Furthermore, the effective power generation area of ​​the flexible perovskite thin-film battery completely covers the effective power generation area of ​​the crystalline silicon solar cell, and the stacked structure formed by the two can utilize their respective spectral absorption advantages to complement each other in the ultraviolet-infrared spectrum range to improve the overall power generation efficiency and efficiently convert sunlight.

[0009] Furthermore, the adhesive layer also includes a weather-resistant and waterproof butyl tape, which is tightly attached to the edge of the overlapping area of ​​the flexible perovskite thin-film battery and the crystalline silicon solar cell to enhance the water-blocking and sealing effect.

[0010] Furthermore, the control signal output terminal of the MPPT controller is electrically connected to the voltage signal output terminal of the flexible perovskite thin film battery.

[0011] Furthermore, the voltage signal collection terminal of the MPPT controller is electrically connected to the voltage signal output terminal of the crystalline silicon solar cell.

[0012] Furthermore, the junction box is provided with electrical connection terminals, and the junction box is connected to the MPPT controller and the crystalline silicon solar cell respectively through the terminals, receives the electric energy regulated by the MPPT controller and the electric energy directly generated by the crystalline silicon solar cell, and realizes the combined output of electric energy.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model utilizes the characteristics of flexible perovskite thin film batteries, which are light, efficient, easy and fast to deploy, and have a certain degree of light transmittance, to cover the light-receiving surface of the crystalline silicon battery with impaired efficiency with the flexible perovskite thin film battery, thereby realizing the combined power generation of the flexible perovskite battery and the crystalline silicon solar cell. The repair work of the crystalline silicon solar cell with attenuated efficiency is achieved by forming a battery pack mode, thereby improving the overall efficiency of the system without changing the original crystalline silicon solar cell power generation system, thereby repairing the damaged crystalline silicon solar cell at the lowest cost.

[0015] (2) The utility model adopts an MPPT controller to convert the electric energy generated by the flexible perovskite thin-film battery into a voltage and current that matches the crystalline silicon solar power generation system. At the same time, the electric energy generated by the two is output in parallel through a junction box, which effectively integrates the power generated by two different types of batteries and realizes efficient energy collection and transmission, thereby improving the overall power output of the repaired solar cell body.

[0016] (3) The utility model adopts flexible perovskite thin film batteries because of their light weight and certain light transmittance. They can be quickly and conveniently deployed on damaged crystalline silicon batteries through an adhesive layer, without replacing the original crystalline silicon batteries or making large-scale changes to the power station structure, which greatly reduces the cost and complexity of repair and improves the efficiency of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a schematic diagram of laying the bonding layer provided by an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of electrical connection provided by an embodiment of the utility model;

[0020] Figure 3 It is a side view of the utility model;

[0021] Description of the drawings: 1. Crystalline silicon solar cell; 2. Weather-resistant and waterproof butyl tape; 3. Film; 4. Flexible perovskite thin film battery; 5. Adhesive layer; 6. MPPT controller; 7. Junction box. 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 to Figure 3 As shown, this embodiment provides a crystalline silicon solar cell attenuation repair device, including a crystalline silicon solar cell 1, a flexible perovskite thin film battery 4, an adhesive layer 5, an MPPT controller 6 and a junction box 7; the MPPT controller 6 is electrically connected to the flexible perovskite thin film battery 4, and the junction box 7 is connected to both the crystalline silicon solar cell 1 and the MPPT controller 6; the flexible perovskite thin film battery 4 has high light transmittance and absorbs light energy with high intensity in the blue-green to ultraviolet band; the crystalline silicon solar cell 1 absorbs light energy with high intensity in the red to near-infrared band;

[0027] The adhesive layer 5 is arranged on the light-receiving surface of the crystalline silicon solar cell 1, including a film 3. The flexible perovskite thin film battery 4 is covered on the crystalline silicon light-receiving surface glass of the crystalline silicon solar cell 1 through the film 3 to form a laminated structure; the film 3 has high transparency and weather resistance.

[0028] Specifically, Figure 3 As shown, the effective power generation area of ​​the flexible perovskite thin film battery 4 completely covers the effective power generation area of ​​the crystalline silicon solar cell 1, and the stacked structure formed by the two can utilize their respective spectral absorption advantages to complement each other in the ultraviolet-infrared spectrum range to improve the overall power generation efficiency and efficiently convert sunlight.

[0029] Furthermore, the adhesive layer 5 also includes a weather-resistant and waterproof butyl tape 2, which is tightly attached to the edge of the overlapping area between the flexible perovskite thin film battery 4 and the crystalline silicon solar cell 1 to enhance the water-blocking and sealing effect.

[0030] Specifically, the control signal output end of the MPPT controller 6 is electrically connected to the voltage signal output end of the flexible perovskite thin film battery 4 for adjusting the output voltage of the flexible perovskite thin film battery 4 to match the voltage level generated by the crystalline silicon solar cell 1 .

[0031] Furthermore, the voltage signal acquisition end of the MPPT controller 6 is electrically connected to the voltage signal output end of the crystalline silicon solar cell 1, and the MPPT controller 6 is configured to monitor and adjust the output power between the crystalline silicon solar cell 1 and the flexible perovskite thin film battery 4 in real time to achieve maximum power point tracking, thereby ensuring efficient grid-connected power generation between the two.

[0032] like Figure 2 As shown, electrical connection terminals are provided in the junction box 7, and the junction box 7 is connected to the MPPT controller 6 and the crystalline silicon solar cell 1 through the terminals, respectively, to receive the electric energy regulated by the MPPT controller 6 and the electric energy directly generated by the crystalline silicon solar cell 1, so as to realize the combined output of electric energy.

[0033] Example 2

[0034] This embodiment provides a physical sample prepared by a crystalline silicon solar cell attenuation repair device. The conversion efficiency of this sample is tested under a standard sunlight to obtain the parameters in the following table:

[0035]

[0036] The maximum power Wmax of crystalline silicon solar cell samples 1, 2 and 3 before repair are 5215.61mW, 5791.59mW and 5284.46mW respectively; the maximum power Wmax of crystalline silicon-perovskite stacked cell samples 1, 2 and 3 after repair are 6469.7mW, 6344.56mW and 6433.41mW respectively. The change of maximum power before and after repair shows the effectiveness of the attenuation repair device for crystalline silicon solar cells provided by this embodiment.

[0037] It can be seen that the maximum power (Wmax) of the crystalline silicon-perovskite tandem cells repaired by this technology significantly exceeds the maximum power of a single crystalline silicon cell before repair, which confirms the effectiveness and superiority of the technical solution of the utility model, and can restore the performance of the attenuated crystalline silicon solar cells and even exceed their initial state.

[0038] In summary, the crystalline silicon solar cell attenuation repair device utilizes the synergistic and complementary characteristics of the absorption spectra of the flexible perovskite cell 4 and the crystalline silicon solar cell 1, and the flexible perovskite cell 4 is light and easy to deploy, so that the crystalline silicon solar cell attenuation repair technology has strong practical value.

[0039] 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 attenuation repair device, characterized in that: The invention comprises a crystalline silicon solar cell (1), a flexible perovskite thin film cell (4), an adhesive layer (5), an MPPT controller (6) and a junction box (7); the MPPT controller (6) is electrically connected to the flexible perovskite thin film cell (4), and the junction box (7) is connected to both the crystalline silicon solar cell (1) and the MPPT controller (6); the flexible perovskite thin film cell (4) is light-transmitting and absorbs light energy in the blue-green to ultraviolet band; the crystalline silicon solar cell (1) absorbs light energy in the red to near-infrared band; The bonding layer (5) is arranged on the light-receiving surface of the crystalline silicon solar cell (1), the bonding layer (5) comprises a film (3), the film (3) is light-transmissive, and the flexible perovskite thin-film battery (4) is covered on the crystalline silicon light-receiving surface glass of the crystalline silicon solar cell (1) through the film (3), forming a laminated structure.

2. The crystalline silicon solar cell attenuation repair device according to claim 1, characterized in that: The effective power generation area of ​​the flexible perovskite thin film battery (4) completely covers the effective power generation area of ​​the crystalline silicon solar cell (1).

3. The crystalline silicon solar cell attenuation repair device according to claim 1, characterized in that: The adhesive layer (5) further comprises a weather-resistant and waterproof butyl tape (2), wherein the weather-resistant and waterproof butyl tape (2) is closely attached to the edge of the overlapping area between the flexible perovskite thin-film battery (4) and the crystalline silicon solar cell (1).

4. The crystalline silicon solar cell attenuation repair device according to claim 1, characterized in that: The control signal output end of the MPPT controller (6) is electrically connected to the voltage signal output end of the flexible perovskite thin film battery (4).

5. The crystalline silicon solar cell attenuation repair device according to claim 1, characterized in that: The voltage signal collection end of the MPPT controller (6) is electrically connected to the voltage signal output end of the crystalline silicon solar cell (1).

6. The crystalline silicon solar cell attenuation repair device according to claim 1, characterized in that: The junction box (7) is provided with electrical connection terminals, and the junction box (7) is respectively connected to the MPPT controller (6) and the crystalline silicon solar cell (1) through the terminals, and receives the electric energy regulated by the MPPT controller (6) and the electric energy directly generated by the crystalline silicon solar cell (1).

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