Photovoltaic wiring system

Abstract

A photovoltaic wiring system comprises a photovoltaic assembly and an inverter. The number of the photovoltaic modules is M * N, M and N are natural numbers, the photovoltaic modules are arranged in a matrix of M rows and N columns, the N photovoltaic modules in each row are arranged left and right in the transverse direction, and the M photovoltaic modules in each column are arranged front and back in the longitudinal direction perpendicular to the transverse direction. Each photovoltaic module comprises two connecting wires and two connectors, the connectors are arranged on the end portions of the connecting wires in a one-to-one correspondence mode, and the connectors are used for electric signal connection between the photovoltaic modules and transmitting electric signals to the inverter in a unified mode. According to the photovoltaic wiring system, the signal transmission process is simple, and the loss in the signal transmission process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of photovoltaic wiring systems, belong to photovoltaic technical field. BACKGROUND

[0002] In power system, PV is the abbreviation of "Photovoltaic", represents a kind of technology using solar energy to generate electricity. Photovoltaic technology converts solar energy into electrical energy through photoelectric effect, has the advantages of environmental protection, renewable, etc., is one of the important directions of future energy development. After each photovoltaic module converts solar energy into electrical energy, how to uniformly transmit electrical signal to inverter needs to be considered, in the prior art, the photovoltaic module transmits signal by means of externally added element, the signal transmission in the prior art is relatively complex and signal loss is easy to occur in transmission process. SUMMARY

[0003] The utility model discloses a kind of photovoltaic wiring systems, the photovoltaic wiring system can make the signal transmission between photovoltaic module and inverter simple, reduce signal loss.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of photovoltaic wiring system, including photovoltaic module and inverter, the photovoltaic module is M*N, M and N are natural number, the photovoltaic module is arranged as M rows and N columns matrix, N each row photovoltaic module is arranged left and right in horizontal direction, M each column photovoltaic module is arranged front and back in vertical direction perpendicular to the horizontal direction;Each photovoltaic module itself includes two connecting wires and two connecting heads, the connecting head is correspondingly arranged on the end of the connecting wire, the connecting head is used for electrical signal connection between the photovoltaic module and uniformly transmit the electrical signal to the inverter.

[0005] As a further improved technical scheme of the utility model, when M=1, the photovoltaic module is arranged in a row, and the photovoltaic module arranged in a row is N; the electrical signal between the adjacent two photovoltaic modules in the row is connected in series through two connecting heads, and the two connecting heads at the beginning and end of the row are electrically connected to the inverter.

[0006] As a further improved technical scheme of the utility model, the photovoltaic wiring system forms a series signal between the N photovoltaic modules arranged in a row through the connecting head, and the path of the series signal is in a linear shape.

[0007] As a further improvement of this utility model, when M=2, the photovoltaic modules are arranged in two rows, with N photovoltaic modules in each row; the electrical signal between two adjacent photovoltaic modules in the same row is connected in series through two connectors, and the electrical signal between the photovoltaic modules in the first row and the first column and the photovoltaic modules in the second row and the first column is also connected in series through two connectors, and the two connectors of the photovoltaic modules in the first row and the Nth column and the photovoltaic modules in the second row and the Nth column are electrically connected to the inverter.

[0008] As a further improvement of this utility model, the photovoltaic wiring system forms a series signal between the 2N photovoltaic modules arranged in two rows through the connector, and the path of the series signal is U-shaped.

[0009] As a further improvement of this utility model, when M=3, the photovoltaic modules are arranged in three rows, with N photovoltaic modules in each row; the electrical signal between two adjacent photovoltaic modules in the same row is connected in series through two connectors, the electrical signal between the photovoltaic modules in the first row and first column and the photovoltaic modules in the second row and first column is also connected in series through two connectors, the electrical signal between the photovoltaic modules in the second row and Nth column and the photovoltaic modules in the third row and Nth column is also connected in series through two connectors, and the two connectors of the photovoltaic modules in the first row and Nth column and the photovoltaic modules in the third row and first column are electrically connected to the inverter.

[0010] As a further improvement of this utility model, the photovoltaic wiring system forms a series signal between the 3N photovoltaic modules arranged in two rows through the connector, and the path of the series signal is S-shaped.

[0011] As a further improvement of this utility model, when M=4, the photovoltaic modules are arranged in four rows, with N photovoltaic modules in each row; the electrical signal between two adjacent photovoltaic modules in the same row is connected in series through two connectors; the electrical signal between the photovoltaic modules in the first row and first column and the photovoltaic modules in the second row and first column is also connected in series through two connectors; the electrical signal between the photovoltaic modules in the second row and Nth column and the photovoltaic modules in the third row and Nth column is also connected in series through two connectors; the electrical signal between the photovoltaic modules in the third row and first column and the photovoltaic modules in the fourth row and first column is again connected in series through two connectors; and the two connectors of the photovoltaic modules in the first row and Nth column and the photovoltaic modules in the fourth row and Nth column are electrically connected to the inverter.

[0012] As a further improvement of this utility model, the photovoltaic wiring system forms a series signal between the 4N photovoltaic modules arranged in four rows through the connector, and the path of the series signal is serpentine.

[0013] As a further improvement of the present invention, the two connectors located on the same photovoltaic module include plugs and sockets that can be inserted into each other. The middle part of the connecting wires on the same row of photovoltaic modules is embedded in the frame of the corresponding photovoltaic module, and the first and last parts of the connecting wires on the same row of photovoltaic modules are exposed outside the frame of the corresponding photovoltaic module.

[0014] Compared to existing technologies, this invention features a photovoltaic module that includes two connecting wires and two connectors. The connectors are positioned one-to-one on the ends of the connecting wires and are used for electrical signal connection between the photovoltaic modules, transmitting the electrical signals to the inverter. The photovoltaic modules in this invention's photovoltaic wiring system do not require externally added components for signal transmission, thus simplifying the signal transmission process and reducing signal loss. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a first embodiment of the photovoltaic wiring system of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the photovoltaic wiring system of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the photovoltaic wiring system of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the photovoltaic wiring system of this utility model;

[0019] Figure 5 These are schematic diagrams of the structures of two connectors in Embodiments 1 to 4 of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the photovoltaic module in this utility model, which has two connectors and two connecting lines exposed outside the frame of the photovoltaic module.

[0021] Figure 7 This is a schematic diagram of the structure of the photovoltaic module in this utility model, which has two connectors and two connecting lines embedded in the frame of the photovoltaic module.

[0022] Figure 8This is a schematic diagram of the structure of the photovoltaic module of this utility model, which has two connectors, wherein the connecting wires of the corresponding connectors are embedded in the frame of the photovoltaic module and the connecting wires of the corresponding sockets are exposed outside the frame of the photovoltaic module.

[0023] Figure 9 This is a schematic diagram of the structure of the photovoltaic module of this utility model, which has two connectors, wherein the connecting wires of the corresponding sockets are embedded in the frame of the photovoltaic module and the connecting wires of the corresponding plugs are exposed outside the frame of the photovoltaic module.

[0024] Figure 10 yes Figure 1 Enlarged view of part A in the middle. Detailed Implementation

[0025] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0026] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0027] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "front," "back," "left," "right," "upper," "lower," and similar words appearing in this utility model are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. If "several" appears in this utility model, it means two or more.

[0028] Please refer to Figures 1 to 10 As shown, this utility model discloses a photovoltaic wiring system, which includes photovoltaic modules 100 and an inverter 200. The photovoltaic modules 100 consist of M*N units, where M and N are natural numbers. The photovoltaic modules 100 are arranged in a matrix of M rows and N columns. The N photovoltaic modules 100 in each row are arranged horizontally, and the M photovoltaic modules 100 in each column are arranged vertically, perpendicular to the horizontal direction. Each photovoltaic module 100 includes two connecting wires 11 and two connectors 12. The connectors 12 are correspondingly located at the ends of the connecting wires 11 and are used for electrical signal connection between the photovoltaic modules 100 and for transmitting the electrical signals to the inverter 200. Because the photovoltaic modules 100 in this photovoltaic wiring system include their own connectors 12, there is no need for externally added components for signal transmission, thus simplifying the signal transmission process and reducing signal loss.

[0029] Please refer to Figure 1 , Figures 5 to 10 As shown, when M=1, the photovoltaic modules 100 are arranged in a row, and there are N photovoltaic modules 100 arranged in a row; the electrical signal between two adjacent photovoltaic modules 100 in the row is connected in series through two connectors 12, and the two connectors 12 at the beginning and end of the row are electrically connected to the inverter 200.

[0030] Please continue to refer to Figure 1 , Figures 5 to 10 As shown, the photovoltaic wiring system forms a series signal between N photovoltaic modules 100 arranged in a row through the connector 12. The path of the series signal is linear. The linear series signal path ensures fast signal transmission.

[0031] Please refer to Figure 2 , Figures 5 to 10 As shown, when M=2, the photovoltaic modules 100 are arranged in two rows, with N photovoltaic modules 100 in each row; the electrical signal between two adjacent photovoltaic modules 100 in the same row is connected in series through two connectors 12, and the electrical signal between the photovoltaic modules 100 in the first row and the first column of the first row and the photovoltaic modules 100 in the second row and the first column of the second row is also connected in series through two connectors 12, and the two connectors 12 of the photovoltaic modules 100 in the first row and the Nth column of the second row and the Nth column of the second row are electrically connected to the inverter 200.

[0032] Please continue to refer to Figure 2 , Figures 5 to 10As shown, the photovoltaic wiring system forms a series signal between 2N photovoltaic modules 100 arranged in two rows through the connector 12. The path of the series signal is U-shaped. Although the U-shaped series signal path reduces the speed of signal transmission to some extent, it realizes the matrix arrangement of the photovoltaic modules 100, increases the collection of light energy, and thus increases the power generation.

[0033] Please refer to Figure 3 , Figures 5 to 10 As shown, when M=3, the photovoltaic modules 100 are arranged in three rows, with N photovoltaic modules 100 in each row; the electrical signal between two adjacent photovoltaic modules 100 in the same row is connected in series through two connectors 12; the electrical signal between the photovoltaic modules 100 in the first row and first column and the photovoltaic modules 100 in the second row and first column is also connected in series through two connectors 12; the electrical signal between the photovoltaic modules 100 in the second row and Nth column and the photovoltaic modules 100 in the third row and Nth column is also connected in series through two connectors 12; the two connectors 12 of the photovoltaic modules 100 in the first row and Nth column and the photovoltaic modules 100 in the third row and first column are electrically connected to the inverter 200.

[0034] Please continue to refer to Figure 3 , Figures 5 to 10 As shown, the photovoltaic wiring system forms a series signal between the 3N photovoltaic modules 100 arranged in two rows through the connector 12. The path of the series signal is S-shaped. Compared with the U-shaped shape, the S-shaped shape has an additional bend, which increases the number of photovoltaic modules 100 in the matrix arrangement, further increasing the collection of light energy and thus further increasing the power generation.

[0035] Please refer to Figures 4 to 10 As shown, when M=4, the photovoltaic modules 100 are arranged in four rows, with N photovoltaic modules 100 in each row; the electrical signal between two adjacent photovoltaic modules 100 in the same row is connected in series through two connectors 12; the electrical signal between the photovoltaic modules 100 in the first row and first column and the photovoltaic modules 100 in the second row and first column is also connected in series through two connectors 12; the electrical signal between the photovoltaic modules 100 in the second row and Nth column and the photovoltaic modules 100 in the third row and Nth column is also connected in series through two connectors 12; the electrical signal between the photovoltaic modules 100 in the third row and first column and the photovoltaic modules 100 in the fourth row and first column is again connected in series through two connectors 12; the two connectors 12 of the photovoltaic modules 100 in the first row and Nth column and the photovoltaic modules 100 in the fourth row and Nth column are electrically connected to the inverter 200.

[0036] Please continue to refer to Figures 4 to 10As shown, the photovoltaic wiring system forms a series signal between the 4N photovoltaic modules 100 arranged in four rows through the connector 12. The path of the series signal is serpentine. Compared with the S-shape, the serpentine shape has an additional bend, which further increases the number of photovoltaic modules 100 in the matrix arrangement and further increases the collection of light energy, thereby increasing the power generation.

[0037] The above describes the series signal configurations of this invention when M = 1, 2, 3, and 4. It is particularly important to note that when M ≥ 5, it can be considered a further superposition based on M = 4, and therefore can also be called a serpentine pattern. That is, the more bends in the serpentine pattern, the denser the matrix arrangement of the photovoltaic module 100, increasing light energy collection and thus increasing power generation.

[0038] Please refer to Figures 5 to 10 As shown, the two connectors 12 located on the same photovoltaic module 100 include plugs 121 and sockets 122 that can be inserted into each other. The plugs 121 and sockets 122 can have various forms. Please refer to... Figure 6 The connecting wire 11 connected to the plug 121 and the connecting wire 11 connected to the socket 122 are both exposed outside the frame of the corresponding photovoltaic module 100; please refer to Figure 7 The connecting wire 11 connected to the plug 121 and the connecting wire 11 connected to the socket 122 are both embedded in the frame of the corresponding photovoltaic module 100; please refer to Figure 8 The connecting wire 11 connected to the plug 121 is embedded in the frame of the corresponding photovoltaic module 100, but the connecting wire 11 connected to the socket 122 is exposed outside the frame of the corresponding photovoltaic module 100; please refer to Figure 9 The connecting wire 11 connected to the plug 121 is exposed outside the frame of the corresponding photovoltaic module 100, but the connecting wire 11 connected to the socket 122 is embedded inside the frame of the corresponding photovoltaic module 100. It should be noted that if the connecting wires 11 in the middle portion of the same row of photovoltaic modules 100 are all exposed outside the frame of their respective photovoltaic modules 100, then... Figure 6 The shapes of the plug 121 and socket 122 shown are suitable for situations where the spacing between photovoltaic modules 100 is large, facilitating insertion and connection operations. If the connecting wires 11 in the middle portion of the same row of photovoltaic modules 100 are embedded within the frame of their respective photovoltaic modules 100, then... Figure 7 The shape of the plug 121 and socket 122 shown helps to save space between the photovoltaic modules 100; and the connecting wires 11 of the first and last parts of the photovoltaic modules 100 in the same row are exposed outside the frame of the corresponding photovoltaic module 100, which is to say, Figure 8 ,Figure 9 The shapes of the plug 121 and the socket 122 shown are well-suited for interlocking at bends in adjacent rows.

[0039] The principle of this invention is that the IN+ input terminal of the PCU inside the photovoltaic module 100 is used to connect to the PV+ terminal and the IN- output terminal is used to connect to the PV- terminal. With this configuration, the solar energy collected by the photovoltaic module 100 is converted into electrical energy internally. Then, the OUT+ output terminal of the PCU is used to connect to one of the plug 121 and the socket 122, and the OUT- output terminal is used to connect to the other of the plug 121 and the socket 122. With this configuration, the electrical signal of the electrical energy is uniformly transmitted to the inverter 200 in a series manner.

[0040] In summary, this utility model includes two connecting wires 11 and two connectors 12 in each of the photovoltaic modules 100. The connectors 12 are correspondingly disposed on the ends of the connecting wires 11. The connectors 12 are used for electrical signal connection between the photovoltaic modules 100 and transmit the electrical signals to the inverter 200. The photovoltaic modules 100 of this utility model's photovoltaic wiring system do not need to rely on externally added components for signal transmission. Therefore, the signal transmission process is simple and the loss during signal transmission is reduced.

[0041] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A photovoltaic wiring system, characterized in that: The system includes photovoltaic modules (100) and inverters (200). There are M*N photovoltaic modules (100), where M and N are natural numbers. The photovoltaic modules (100) are arranged in a matrix of M rows and N columns. The N photovoltaic modules (100) in each row are arranged horizontally, and the M photovoltaic modules (100) in each column are arranged vertically, one after the other. Each photovoltaic module (100) includes two connecting lines (11) and two connectors (12). The connectors (12) are arranged one-to-one at the ends of the connecting lines (11). The connectors (12) are used for electrical signal connection between the photovoltaic modules (100) and to transmit the electrical signals to the inverters (200).

2. The photovoltaic wiring system as described in claim 1, characterized in that: When M=1, the photovoltaic modules (100) are arranged in a row, and there are N photovoltaic modules (100) arranged in a row; The electrical signals between two adjacent photovoltaic modules (100) in a row are connected in series through two connectors (12), and the two connectors (12) at the beginning and end of the row are electrically connected to the inverter (200).

3. The photovoltaic wiring system as described in claim 2, characterized in that: The photovoltaic wiring system forms a series signal between N photovoltaic modules (100) arranged in a row through the connector (12), and the path of the series signal is in a straight line.

4. The photovoltaic wiring system as described in claim 1, characterized in that: When M=2, the photovoltaic modules (100) are arranged in two rows, and there are N photovoltaic modules (100) in each row; The electrical signals between two adjacent photovoltaic modules (100) in the same row are connected in series through two connectors (12). The electrical signals between the photovoltaic modules (100) in the first row and first column and the photovoltaic modules (100) in the second row and first column are also connected in series through two connectors (12). The two connectors (12) of the photovoltaic modules (100) in the first row and Nth column and the photovoltaic modules (100) in the second row and Nth column are electrically connected to the inverter (200).

5. The photovoltaic wiring system as described in claim 4, characterized in that: The photovoltaic wiring system forms a series signal between the 2N photovoltaic modules (100) arranged in two rows through the connector (12), and the path of the series signal is U-shaped.

6. The photovoltaic wiring system as described in claim 1, characterized in that: When M=3, the photovoltaic modules (100) are arranged in three rows, and each row contains N photovoltaic modules (100). The electrical signals between two adjacent photovoltaic modules (100) in the same row are connected in series through two connectors (12). The electrical signals between the photovoltaic modules (100) in the first row and first column and the photovoltaic modules (100) in the second row and first column are also connected in series through two connectors (12). The electrical signals between the photovoltaic modules (100) in the second row and Nth column and the photovoltaic modules (100) in the third row and Nth column are also connected in series through two connectors (12). The two connectors (12) of the photovoltaic modules (100) in the first row and Nth column and the photovoltaic modules (100) in the third row and first column are electrically connected to the inverter (200).

7. The photovoltaic wiring system as described in claim 6, characterized in that: The photovoltaic wiring system forms a series signal between the 3N photovoltaic modules (100) arranged in two rows through the connector (12), and the path of the series signal is S-shaped.

8. The photovoltaic wiring system as described in claim 1, characterized in that: When M=4, the photovoltaic modules (100) are arranged in four rows, with N photovoltaic modules (100) in each row; the electrical signal between two adjacent photovoltaic modules (100) in the same row is connected in series through two connectors (12), the electrical signal between the photovoltaic modules (100) in the first row and first column and the photovoltaic modules (100) in the second row and first column are also connected in series through two connectors (12), and the electrical signal between the photovoltaic modules (100) in the second row and Nth column and the photovoltaic modules (100) in the third row and Nth column are connected in series through two connectors (12). Furthermore, the electrical signals between the photovoltaic modules (100) in the Nth column are connected in series through two connectors (12), and the electrical signals between the photovoltaic modules (100) in the third row and the first column and the photovoltaic modules (100) in the fourth row and the first column are also connected in series through two connectors (12). The two connectors (12) of the photovoltaic modules (100) in the first row and the Nth column and the photovoltaic modules (100) in the fourth row and the Nth column are electrically connected to the inverter (200).

9. The photovoltaic wiring system as described in claim 8, characterized in that: The photovoltaic wiring system forms a series signal between the 4N photovoltaic modules (100) arranged in four rows through the connector (12), and the path of the series signal is serpentine.

10. The photovoltaic wiring system according to any one of claims 1 to 9, characterized in that: The two connectors (12) located on the same photovoltaic module (100) include plugs (121) and sockets (122) that can be inserted into each other. The middle part of the connecting line (11) on the same row of photovoltaic modules (100) is embedded in the frame of the corresponding photovoltaic module (100), and the first and last parts of the connecting line (11) on the same row of photovoltaic modules (100) are exposed outside the frame of the corresponding photovoltaic module (100).

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