Device for monitoring generating capacity of photovoltaic module in different wave bands

Abstract

The utility model provides a device for monitoring the generating capacity of a photovoltaic module at different wave bands, which comprises the photovoltaic module for generating power, an inverter for monitoring the generating capacity, a fixed frame and two optical filters of different types, the inverter is connected with the photovoltaic module, the fixed frame is arranged on the photovoltaic module, and the two optical filters are arranged on the fixed frame. The two optical filters are stacked and arranged on the inner side wall of the fixing frame at intervals so that the photovoltaic module can receive target light waves, and the two optical filters are located above the photovoltaic module. Therefore, non-target light waves are filtered, the photovoltaic module only receives the target light waves, the power generation amount under different light bands is recorded through the inverter, the light wave power generation conditions of different bands are detected, the power generation amount under different types of light bands is monitored, and further improvement of the photovoltaic module is facilitated so as to improve the power generation efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic filtering, and particularly relates to a device for monitoring the power generation of photovoltaic components in different bands. Background Art

[0002] Photovoltaic solar cells and modules have been developed to date, and the technology of the entire industry chain has gradually matured. In particular, the continuous innovation of power generation efficiency technology has infinitely approached the theoretical limit of crystalline silicon cells. Every breakthrough in power generation efficiency faces great difficulties. Therefore, in order to further improve the power generation efficiency of crystalline silicon solar cells, major photovoltaic power generation companies and research institutions at home and abroad have become more detailed and precise in their research in this field. For example, the use of a quantum efficiency tester at the crystalline silicon cell end can accurately monitor the internal and external quantum efficiency and reflectivity of each band, thereby changing the internal and external quantum efficiency and reflectivity of a certain band by changing the production process, thereby improving the power generation efficiency of solar cells.

[0003] However, compared with the battery end, there is relatively little research on the precise photovoltaic module end in the industry. The photovoltaic module end is a power generation device that converts solar energy into electrical energy. However, the current monitoring of the power generation of the photovoltaic module end only stays on the power generation in different time periods, targeting the full-band sunlight, making it impossible to monitor the power generation in other bands, and it is also impossible to further improve the power generation efficiency by improving the photovoltaic module end. Utility Model Content

[0004] In view of the above problems, the utility model proposes a device for monitoring the power generation of photovoltaic components in different bands, comprising:

[0005] Photovoltaic modules for power generation;

[0006] An inverter for monitoring power generation, connected to the photovoltaic module;

[0007] A fixed frame and two filters of different types, wherein the fixed frame is arranged on the photovoltaic component, wherein the two filters are stacked and spaced apart on the inner wall of the fixed frame so that the photovoltaic component receives the target light wave, and the two filters are located above the photovoltaic component.

[0008] Optionally, the two filters are respectively a first filter and a second filter, the fixing frame is disposed on the photovoltaic component, and the first filter is located above the second filter.

[0009] Optionally, the first filter is a visible light filter and the second filter is an infrared filter, or the first filter is an ultraviolet filter and the second filter is an infrared filter, or the first filter is an ultraviolet filter and the second filter is a visible light filter.

[0010] Optionally, the filter is made of coated tempered glass.

[0011] Optionally, the coating on the coated tempered glass is an anti-reflection film.

[0012] Optionally, the thickness of the antireflection film is 100 nanometers to 120 nanometers.

[0013] Optionally, the fixed frame includes four fixed arms, the end faces of the four fixed arms are connected in sequence to form a frame-shaped structure, a fixing groove is provided along the inner walls of the four fixed arms, and an outer wall of the fixing groove close to the photovoltaic component forms an L-shaped groove on the four fixed arms, the first filter and the second filter are respectively arranged in the fixing groove, and the L-shaped groove is arranged on the edge of the photovoltaic component.

[0014] Optionally, the fixing groove includes two U-shaped grooves, the height position of the U-shaped groove on each fixing arm is the same as the height position of the U-shaped groove on the adjacent fixing arm, and the height position of the L-shaped groove on each fixing arm is the same as the height position of the L-shaped groove on the adjacent fixing arm;

[0015] The first filter and the second filter are respectively and sequentially arranged in the corresponding U-shaped grooves.

[0016] Optionally, the width of the U-shaped groove is 2 mm-4 mm, and the width of the L-shaped groove is 30 mm-50 mm.

[0017] Optionally, the four fixed arms respectively include a first long arm, a first short arm, a second long arm and a second short arm which are connected end-to-end in sequence, the first long arm and the second long arm are parallel and have the same length, and the first short arm and the second short arm are parallel and have the same length.

[0018] The utility model discloses a device for monitoring the power generation of photovoltaic components in different wavebands. Two filters of different types are located above the photovoltaic components, thereby filtering out non-target light waves, so that the photovoltaic components only receive target light waves, and then the power generation in different light wavebands is recorded through an inverter, thereby realizing the detection of power generation conditions of different light waves. The monitoring of power generation conditions in different types of light wavebands is conducive to further improvement of the photovoltaic components to improve power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 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.

[0020] Figure 1 A schematic diagram of a device for monitoring power generation of photovoltaic components in different bands in an embodiment of the utility model is shown;

[0021] Figure 2 A schematic diagram of a fixed frame of a device for monitoring power generation of photovoltaic components in different bands in an embodiment of the utility model is shown;

[0022] Figure 3 It shows the internal schematic diagram of the fixed frame of the device for monitoring the power generation of photovoltaic components in different bands in the embodiment of the utility model;

[0023] Figure 4 A schematic diagram of an arm inside a fixed frame of a device for monitoring power generation of photovoltaic components in different bands in an embodiment of the utility model is shown.

[0024] In the figure, 1-photovoltaic module, 2-inverter, 31-fixing frame, 32-first filter, 33-second filter, 311-fixing groove, 312-L-shaped groove, 11-frame member, 12-laminated member. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 As shown, the utility model provides a device for monitoring the power generation of a photovoltaic component 1 in different bands, comprising: a photovoltaic component 1 for generating electricity, an inverter 2 for monitoring the power generation, a fixing frame 31 and two filters 32 and 33 of different types, the inverter 2 is connected to the photovoltaic component 1, the fixing frame is arranged on the photovoltaic component 1, wherein the two filters 32 and 33 are stacked and arranged at intervals on the inner side wall of the fixing frame 31 so that the photovoltaic component 1 receives the target light wave, and the two filters 32 and 33 are located above the photovoltaic component 1. By locating the two filters 32 and 33 of different types above the photovoltaic component 1, non-target light waves are filtered, so that the photovoltaic component 1 only receives the target light wave, and then the power generation under different light bands is recorded through the inverter 2, so that the power generation under different light wave bands is detected, and the power generation under different light wave bands is monitored, which is conducive to further improving the photovoltaic component 1 to improve the power generation efficiency.

[0027] It should be noted that when selecting the sub-band test of the power generation of the photovoltaic module 1 or its array, the photovoltaic module 1 is installed outdoors and connected to the grid. The tested photovoltaic module 1 or its array needs to be connected to an inverter 2 to monitor the power generation. The two different types of filters on the two filters 32 and 33 are located directly above the photovoltaic module 1. In the test process, the power generation of the same type of photovoltaic module 1 in different light bands within a certain period of time can be selected, and the power generation of different types of photovoltaic modules 1 in different light bands within a certain period of time can be selected, so that the photovoltaic module 1 can be improved according to the results of the power generation, and then it can play a guiding role in improving the manufacturing process of the battery and the module. Optionally, the photovoltaic module 1 can be PERC (emitter and back passivation cell), TOPCon (oxide passivation contact cell), IBC (interdigitated back contact cell), HIT (amorphous silicon and crystalline silicon cell) and its stacked cell components.

[0028] In one embodiment, the two filters are respectively a first filter 32 and a second filter 33, the first filter 32 is located above the second filter 33, the first filter 32 and the second filter 33 are arranged on the inner wall of the fixed frame 31, and the second filter 33 is close to the photovoltaic module 1. It should be noted that the first filter 32 and the second filter 33 are two different types of filters, and the two filters can filter two kinds of light when combined. The first filter 32 and the second filter 33 are located directly above the photovoltaic module 1, the fixed frame 31 is arranged around the edge of the photovoltaic module 1, the first filter 32 and the second filter 33 on the fixed frame 31 are spaced from the photovoltaic module 1, and light can be incident on the photovoltaic module 1 through the first filter 32 and the second filter 33 and fully receive the light. The first filter 32 and the second filter 33 can filter out the redundant light bands, thereby obtaining the target light bands.

[0029] In one embodiment, when the first filter 32 is a visible light filter and the second filter 33 is an infrared filter, the two filters can filter visible light waves and infrared light waves to obtain ultraviolet light waves, and the photovoltaic module 1 receives the ultraviolet light waves for photoelectric conversion, and the power generation is monitored through the inverter 2, so that the power generation in a certain time period can be measured according to different types of photovoltaic modules 1, and the photovoltaic module 1 can be further improved according to the power generation efficiency, thereby improving the power generation efficiency of the photovoltaic module 1. Similarly, when the first filter 32 is an ultraviolet filter and the second filter 33 is an infrared filter, the two filters can filter ultraviolet light waves and infrared light waves to obtain visible light waves, and the photovoltaic module 1 receives the visible light waves for photoelectric conversion, and the power generation is monitored through the inverter 2, so that the power generation in a certain time period can be measured according to different types of photovoltaic modules 1, and the photovoltaic module 1 can be further improved according to the power generation efficiency, thereby improving the power generation efficiency of the photovoltaic module 1. Similarly, the first filter 32 is an ultraviolet filter, and the second filter 33 is a visible filter. The power generation is monitored by the inverter 2, so that the power generation within a certain time period can be measured according to different types of photovoltaic components 1, and the photovoltaic components 1 can be further improved according to the power generation efficiency, thereby improving the power generation efficiency of the photovoltaic components 1.

[0030] In one embodiment, the filter is made of coated tempered glass. The purpose of tempering the filter is to enhance the strength of the glass, and the coating is to coat a layer of anti-reflection film on the tempered glass to enhance the transmittance, thereby improving the efficiency of the photovoltaic module 1 in receiving light waves and avoiding excessive light from being reflected on the filter. Optionally, the coating on the coated tempered glass is an anti-reflection film. The anti-reflection film reduces the reflectivity and enhances the transmittance, thereby improving the efficiency of the photovoltaic module 1 in receiving light waves. Specifically, the length of the coated tempered glass is 1720 mm-2060 mm, the width is 1030 mm-1040 mm, and the thickness is 2 mm-4 mm.

[0031] In one embodiment, the thickness of the anti-reflection film is 100 nanometers to 120 nanometers. The thickness of the anti-reflection film is 100 nanometers to 120 nanometers for better light transmission. The anti-reflection film is made by electron beam evaporation coating process. The material of the anti-reflection film is a mixture of titanium oxide and silicon oxide. The material formula of the anti-reflection film is different according to the required shielding spectrum (light wave).

[0032] like Figures 2 to 4As shown, in one embodiment, the fixing frame 31 includes four fixing arms, and the end faces of the four fixing arms are sequentially connected to form a frame-shaped structure. A fixing groove 311 is provided along the inner side walls of the four fixing arms, and an outer side wall of the fixing groove 311 close to the photovoltaic module 1 forms an L-shaped groove 312 on the four fixing arms, and the first filter 32 and the second filter 33 are spaced apart in the fixing groove 311, respectively, and the L-shaped groove 312 is provided on the edge of the photovoltaic module 1. Corresponding fixing grooves 311 are provided on the inner side walls of the four fixing arms, so that the first filter 32 and the second filter 33 are spaced apart in the fixing grooves 311 on the four fixing arms. The end faces of the four fixing arms are sequentially bonded to form a frame-shaped structure.

[0033] Further, the fixing groove 311 includes two U-shaped grooves 311, the height position of the U-shaped groove 311 on each fixing arm is the same as the height position of the U-shaped groove 311 on the adjacent fixing arm, and the height position of the L-shaped groove 312 on each fixing arm is the same as the height position of the L-shaped groove 312 on the adjacent fixing arm. It should be noted that the two U-shaped grooves 311 are arranged along the length direction of the fixing arm, and the length of the U-shaped groove 311 is the same as the length of the corresponding fixing arm. The two U-shaped grooves 311 and the L-shaped groove 312 are arranged side by side, and the length of the L-shaped groove 312 is the same as the length of the corresponding fixing arm.

[0034] The first filter 32 and the second filter 33 are respectively arranged in the corresponding U-shaped groove 311, and the L-shaped groove 312 is arranged on the edge of the photovoltaic module 1. The first filter 32 and the second filter 33 can be fixed on the inner wall of the fixed frame 31 at intervals through the U-shaped grooves 311 on the four fixed arms, and the L-shaped grooves 312 make it more convenient to place the fixed frame 31 on the edge of the photovoltaic module 1, and make the first filter 32 and the second filter 33 on the fixed frame 31 suspended directly above the photovoltaic module 1. Optionally, the width of the U-shaped groove 311 is 2 mm-4 mm, which can be matched with the filter thickness of 2 mm-4 mm, and the width of the L-shaped groove 312 is 30 mm-50 mm.

[0035] In one embodiment, the four fixed arms respectively include a first long arm, a first short arm, a second long arm and a second short arm connected end-to-end in sequence, the first long arm and the second long arm are parallel and have the same length, and the first short arm and the second short arm are parallel and have the same length. Optionally, the length of the first long arm and the second long arm is 1720 mm-2060 mm, and the length of the first short arm and the second short arm is 1030 mm-1040 mm.

[0036] like Figure 1As shown, optionally, the photovoltaic module 1 includes a frame member 11 and a laminate 12, and the frame member 11 wraps the laminate 12 on its inner wall, wherein the laminate 12 includes a front panel glass, a packaging film, a battery string group, a packaging film, and a rear panel glass (TPT back panel) arranged in sequence from top to bottom, and the thickness of the laminate 12 is 4 mm-5 mm.

[0037] In summary, through the filter component 3 and the inverter 2, the power generation of the photovoltaic component 1 can be monitored in different bands (ultraviolet light, visible light, infrared light), which can provide guidance for improving the manufacturing process of batteries and components.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for monitoring the power generation of photovoltaic modules in different bands, characterized in that: include: Photovoltaic modules for generating electricity (1); An inverter (2) for monitoring power generation, connected to the photovoltaic module (1); A fixed frame (31) and two filters of different types, wherein the fixed frame (31) is arranged on the photovoltaic component (1), wherein the two filters are stacked and spaced apart on the inner wall of the fixed frame (31) so that the photovoltaic component (1) receives target light waves, and the two filters are located above the photovoltaic component (1).

2. The device for monitoring power generation of photovoltaic modules in different bands according to claim 1 is characterized in that: The two optical filters are respectively a first optical filter (32) and a second optical filter (33), and the first optical filter (32) is located above the second optical filter (33).

3. The device for monitoring power generation of photovoltaic modules in different bands according to claim 2 is characterized in that: The first filter (32) is a visible light filter, and the second filter (33) is an infrared filter, or the first filter (32) is an ultraviolet filter, and the second filter (33) is an infrared filter, or the first filter (32) is an ultraviolet filter, and the second filter (33) is a visible light filter.

4. The device for monitoring power generation of photovoltaic modules in different bands according to claim 1, characterized in that: The filter is made of coated tempered glass.

5. The device for monitoring power generation of photovoltaic modules in different bands according to claim 4 is characterized in that: The coating on the coated tempered glass is an anti-reflection film.

6. The device for monitoring power generation of photovoltaic modules in different bands according to claim 5, characterized in that: The thickness of the antireflection film is 100 nanometers to 120 nanometers.

7. The device for monitoring power generation of photovoltaic modules in different bands according to claim 2, characterized in that: The fixing frame (31) comprises four fixing arms, the end faces of the four fixing arms are connected in sequence to form a frame-shaped structure, fixing grooves (311) are provided along the inner side walls of the four fixing arms, and an outer side wall of the fixing groove (311) close to the photovoltaic module (1) forms an L-shaped groove (312) on the four fixing arms, the first filter (32) and the second filter (33) are arranged in the fixing groove (311) at intervals, and the L-shaped groove (312) is arranged on the edge of the photovoltaic module (1).

8. The device for monitoring power generation of photovoltaic modules in different bands according to claim 7 is characterized in that: The fixing groove (311) comprises two U-shaped grooves, the height position of the U-shaped groove on each fixing arm is the same as the height position of the U-shaped groove on the adjacent fixing arm, and the height position of the L-shaped groove (312) on each fixing arm is the same as the height position of the L-shaped groove (312) on the adjacent fixing arm; The first optical filter (32) and the second optical filter (33) are respectively and sequentially arranged in the corresponding U-shaped grooves.

9. The device for monitoring power generation of photovoltaic modules in different bands according to claim 8, characterized in that: The width of the U-shaped groove is 2 mm to 4 mm, and the width of the L-shaped groove (312) is 30 mm to 50 mm.

10. The device for monitoring power generation of photovoltaic modules in different bands according to claim 7 or 8, characterized in that: The four fixed arms respectively include a first long arm, a first short arm, a second long arm and a second short arm which are connected end-to-end in sequence. The first long arm and the second long arm are parallel and have the same length, and the first short arm and the second short arm are parallel and have the same length.

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