Test standard board compatible with different types

Abstract

The utility model relates to a test standard board compatible with different types. The test standard board comprises a front board, a second adhesive film, a rear board, a battery string assembly and a junction box assembly. The battery string assembly is connected to the front plate through a first adhesive film, the rear end face of the front plate is connected with the rear plate through a second adhesive film, the rear plate is connected with the junction box assembly, and the battery string assembly is electrically connected with the junction box assembly. The utility model aims to overcome the defects in the prior art and provide the test standard board compatible with different versions, and can be compatible with different versions of components for production line production, thereby reducing the production cost.

Description

Technical Field

[0001] The utility model relates to a test standard plate which is compatible with different types of plates. Background Art

[0002] IV test standards play a vital role in the photovoltaic industry. They not only provide an accurate measurement standard for testing but also ensure the accuracy and reliability of test results, thereby promoting the development and application of photovoltaic technology in many aspects. As a reference standard with known performance, the IV test standard provides a benchmark for testing the current-voltage (IV) characteristics of photovoltaic cells. During testing, by comparing the test standard with the standard, the performance parameters of the photovoltaic cell or module under test, such as open-circuit voltage, short-circuit current, and maximum power point, can be accurately determined.

[0003] In the actual use of IV test standard boards, it was found that each time an IV test standard board was replaced, the standard board needed to be re-produced, which had a long production cycle and high costs. As the number of IV test standard board models increased, the corresponding storage space and costs increased. Frequent replacement and transportation of IV test standard boards increased the risk of damage to the IV test standard boards. Once damaged, it would seriously affect the production of production line products and order delivery.

[0004] Therefore, in order to solve the above problems, a test standard board compatible with different versions is proposed. Utility Model Content

[0005] The purpose of the present invention is to overcome the existing defects and provide a test standard board that is compatible with different versions, which can be compatible with different version components for production line production and reduce production costs.

[0006] The technical solution to achieve the above purpose is: a test standard board compatible with different versions, including a front board, a second adhesive film, a rear board, a battery string assembly and a junction box assembly;

[0007] The battery string assembly is connected to the front plate via a first adhesive film, the rear end surface of the front plate is connected to the rear plate via a second adhesive film, the rear plate is connected to the junction box assembly, and the battery string assembly is electrically connected to the junction box assembly.

[0008] Preferably, the battery string assembly includes a first battery string, a second battery string, a third battery string, a fourth battery string, a fifth battery string and a sixth battery string; the negative electrode of the first battery string is connected to the positive electrode of the second battery string through a first circuit, the negative electrode of the second battery string is connected to the positive electrode of the third battery string through a second circuit, the negative electrode of the third battery string is connected to the positive electrode of the fourth battery string through a third circuit, the negative electrode of the fourth battery string is connected to the positive electrode of the fifth battery string through a fourth circuit, the negative electrode of the fifth battery string is connected to the positive electrode of the sixth battery string through a fifth circuit, the negative electrode of the sixth battery string is connected to the junction box assembly through a sixth circuit, and the positive electrode of the first battery string is connected to the junction box assembly through a seventh circuit.

[0009] Preferably, the junction box assembly includes a first junction box, a second junction box, a third junction box and a fourth junction box; the sixth circuit is connected to the first junction box; the seventh circuit is connected to the fourth junction box; the second junction box is connected to the eighth circuit, and the other end of the eighth circuit is connected to the fifth circuit; the third junction box is connected to the ninth circuit, and the other end of the ninth circuit is connected to the fourth circuit.

[0010] Preferably, the first junction box, the second junction box, the third junction box and the fourth junction box are all connected to the rear plate.

[0011] Preferably, both the front plate and the back plate are photovoltaic glass.

[0012] The beneficial effects of the present invention are as follows: the present invention is compatible with test standard plates of different types, and can produce IV test machine calibration by being compatible with three types of components. Compared with 1-to-1 IV test standard plate calibration, it can save standard plate production cycle and cost, reduce IV test standard plate storage space, and reduce the risk of damage during standard plate replacement and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a detailed diagram of the connection of the battery string assembly of the utility model;

[0014] Figure 2 This is a connection detail diagram of the junction box assembly of the present invention.

[0015] In the figure: 1. front plate; 2. first battery string; 3. second battery string; 4. third battery string; 5. fourth battery string; 6. fifth battery string; 7. sixth battery string; 8. second circuit; 9. second circuit; 10. third circuit; 11. fourth circuit; 12. fifth circuit; 13. ninth circuit; 14. eighth circuit; 15. sixth circuit; 16. first junction box; 17. second junction box; 18. third junction box; 19. seventh circuit; 20. fourth junction box; 22. second adhesive film; 23. back plate. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figure 1-2 As shown, a test standard board compatible with different layouts includes a front panel 1, a second adhesive film 22, a back panel 23, a battery string assembly, and a junction box assembly. The battery string assembly is connected to the front panel 1 via the first adhesive film, and the rear end of the front panel 1 is connected to the back panel 23 via the second adhesive film 22. The back panel 23 is connected to the junction box assembly, and the battery string assembly is electrically connected to the junction box assembly. Both the front panel 1 and the back panel 23 are made of photovoltaic glass, typically with a thickness between 1.8mm and 6mm. Ultra-clear float or rolled glass, tempered or semi-tempered glass can also be used for the front panel 1 and the back panel 23.

[0019] Specifically, the film can be EVA ethylene-vinyl acetate copolymer, PVB polyvinyl butyral resin, POE polyolefin elastomer, EPE film, or silicone, with a visible light transmittance greater than 88% and a sufficiently low water vapor transmittance, and a thickness generally between 0.1 mm and 1.5 mm.

[0020] Specifically, the battery string assembly includes a first battery string 2, a second battery string 3, a third battery string 4, a fourth battery string 5, a fifth battery string 6 and a sixth battery string 7; the negative electrode of the first battery string 2 is connected to the positive electrode of the second battery string 3 through a first line 8, the negative electrode of the second battery string 3 is connected to the positive electrode of the third battery string 4 through a second line 9, the negative electrode of the third battery string 4 is connected to the positive electrode of the fourth battery string 5 through a third line 10, the negative electrode of the fourth battery string 5 is connected to the positive electrode of the fifth battery string 6 through a fourth line 11, the negative electrode of the fifth battery string 6 is connected to the positive electrode of the sixth battery string 7 through a fifth line 12, the negative electrode of the sixth battery string 7 is connected to the junction box assembly through a sixth line 15, and the positive electrode of the first battery string 2 is connected to the junction box assembly through a seventh line 19.

[0021] Specifically, the battery string is a string of battery cells with busbars already connected. According to the output requirements, a series-parallel design can be performed. The battery cells are heterojunction intrinsic thin film (HJT) cells, TOPcon cells, PERC cells, back contact (I BC), metal wrap-through (MWT) cells, monocrystalline silicon, polycrystalline silicon solar cells, etc. The overall size of the battery cell is 156mm*156mm, 156.75mm*156.75mm, 125mm*125mm, 166mm*166mm, 182mm*182mm, 210mm*210mm or other sizes existing in the solar energy field. The battery cell adopts the conventional market packaging battery cell form such as whole cell, half cell, 1 / 3 cell, etc.

[0022] Specifically, the junction box assembly includes a first junction box 16, a second junction box 17, a third junction box 18, and a fourth junction box 20. Sixth line 15 connects to first junction box 16; seventh line 19 connects to fourth junction box 20; second junction box 17 connects to eighth line 14, the other end of which connects to fifth line 12; and third junction box 18 connects to ninth line 13, the other end of which connects to fourth line 11. First junction box 16, second junction box 17, third junction box 18, and fourth junction box 20 are all connected to rear panel 23. Fourth junction box 20 is the positive terminal box, while first junction box 16, second junction box 17, and third junction box 18 are the negative terminal boxes.

[0023] Specifically, the standard board is first tested for outsourced calibration, and the method of use in production line production is as follows: when the production line component version is a 6-column battery string component version, the IV test machine is connected to the fourth junction box 20 and the first junction box 16 for calibration; when the production line component version is a 5-column battery string component version, the IV test machine is connected to the fourth junction box 20 and the second junction box 17 for calibration; when the production line component version is a 4-column battery string component version, the IV test machine is connected to the fourth junction box 20 and the third junction box 18 for calibration. This standard board can be compatible with three different version components for production line production at the same time.

[0024] This device is compatible with test standard plates of different types. It can produce IV test machine calibration by being compatible with three types of components. Compared with 1-to-1 IV test standard plate calibration, it can save standard plate production cycle and cost, reduce IV test standard plate storage space, and reduce the risk of damage during standard plate replacement and transportation.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test standard board compatible with different versions, characterized in that: It comprises a front plate (1), a second adhesive film (22), a rear plate (23), a battery string assembly and a junction box assembly; The battery string assembly is connected to the front plate (1) via a first adhesive film, the rear end surface of the front plate (1) is connected to the rear plate (23) via a second adhesive film (22), the rear plate (23) is connected to the junction box assembly, and the battery string assembly is electrically connected to the junction box assembly; The battery string assembly comprises a first battery string (2), a second battery string (3), a third battery string (4), a fourth battery string (5), a fifth battery string (6) and a sixth battery string (7); the negative electrode of the first battery string (2) is connected to the positive electrode of the second battery string (3) through a first line (8), the negative electrode of the second battery string (3) is connected to the positive electrode of the third battery string (4) through a second line (9), the negative electrode of the third battery string (4) is connected to the positive electrode of the fourth battery string (5) through a third line (10), the negative electrode of the fourth battery string (5) is connected to the positive electrode of the fifth battery string (6) through a fourth line (11), the negative electrode of the fifth battery string (6) is connected to the positive electrode of the sixth battery string (7) through a fifth line (12), the negative electrode of the sixth battery string (7) is connected to the junction box assembly through a sixth line (15), and the positive electrode of the first battery string (2) is connected to the junction box assembly through a seventh line (19); The junction box assembly comprises a first junction box (16), a second junction box (17), a third junction box (18) and a fourth junction box (20); the sixth circuit (15) is connected to the first junction box (16); the seventh circuit (19) is connected to the fourth junction box (20); the second junction box (17) is connected to the eighth circuit (14), and the other end of the eighth circuit (14) is connected to the fifth circuit (12); the third junction box (18) is connected to the ninth circuit (13), and the other end of the ninth circuit (13) is connected to the fourth circuit (11).

2. The test standard board compatible with different versions according to claim 1, characterized in that: The first junction box (16), the second junction box (17), the third junction box (18) and the fourth junction box (20) are all connected to the rear plate (23).

3. The test standard board compatible with different versions according to claim 1, characterized in that: The front plate (1) and the rear plate (23) are both photovoltaic glass.

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