Novel connector, photovoltaic system and installation and connection method

Abstract

The invention relates to a novel connector, a photovoltaic system and an installation and connection method, a wire harness and positive electrode connectors located at the two ends of the wire harness are modularized to serve as connection modules, two adjacent photovoltaic assemblies (photovoltaic panels) are connected in a plug-in electrical connection mode, and according to the difference of the distance between the two adjacent photovoltaic panels, the two adjacent photovoltaic assemblies (photovoltaic panels) are connected in a plug-in electrical connection mode. The production is matched with different wire harness lengths, the waste of product stock is not generated in batch production, and the wire harness and the positive electrode connectors at the two ends of the wire harness are standardized.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic connection technology, and in particular to a novel connector, a photovoltaic system and an installation and connection method. Background Art

[0002] A photovoltaic connector is a supporting device for connecting photovoltaic modules. As an important component of photovoltaic modules, photovoltaic connectors, on the one hand, are used in conjunction with photovoltaic junction boxes to protect modules from hot spots. On the other hand, they can connect various photovoltaic modules for transmission. The structure of a photovoltaic connector includes components such as cables, terminals and connectors. The terminals of the photovoltaic connector are connected to the junction box on a single photovoltaic module, and the connector at the other end is connected to the output cable through series / parallel connection. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of connectors.

[0003] Traditional photovoltaic module connectors have some disadvantages. Traditional photovoltaic modules connect too many internal components, which causes the internal components to heat up during use, so that they cannot operate normally, and there is a possibility of short circuit, which makes them inconvenient to use. Summary of the invention

[0004] The purpose of this application is to provide a new type of connector, photovoltaic system and installation and connection method.

[0005] In the first aspect, the present application provides a novel connector, which adopts the following technical solution: A new type of connector includes a photovoltaic component, wherein a box body is installed at the upper end of the photovoltaic component, a negative plug is installed on the inner side of the box body, the inner side of the negative plug is electrically connected to a negative metal part, a positive plug is movably connected to the upper end of the photovoltaic component, a sealing ring is installed on the inner side of the positive plug, a positive metal part is installed on the inner side of the sealing ring, the front end of the positive plug is fixedly connected to the positive box body, and the upper end of the positive metal part is electrically connected to a diode.

[0006] Preferably, the front end of the positive electrode metal piece is electrically connected to the cable body, and the negative electrode plug corresponds to the positive electrode plug.

[0007] Preferably, the positive electrode plug is inserted into the inner side of the negative electrode plug, and the positive electrode metal piece is installed in the inner side of the positive electrode box body.

[0008] Preferably, the cable body passes through the interior of the positive electrode box body, the cable body is movably connected to the positive electrode box body, and the positive electrode metal piece corresponds to the negative electrode metal piece.

[0009] Preferably, the negative electrode metal piece is inserted into the inner side of the positive electrode metal piece, and the negative electrode metal piece is electrically connected to the positive electrode metal piece.

[0010] Preferably, the main body material of the sealing ring is rubber, the diode is located inside the positive electrode box body, and there are two groups of negative electrode metal parts and positive electrode metal parts.

[0011] In a second aspect, the present application provides a photovoltaic system, which adopts the following technical solution: A photovoltaic system, the system comprising a plurality of the above-mentioned novel connectors, the system also comprising a wiring harness and positive connectors installed at both ends of the wiring harness, the negative plug on each photovoltaic component being electrically plugged into the positive connector on the wiring harness, and two adjacent photovoltaic components being electrically connected via the wiring harness.

[0012] By adopting the above technical solution, the wiring harness and the positive connectors at both ends of the wiring harness are modularized, and the two adjacent photovoltaic modules (photovoltaic panels) are connected by plug-in electrical connection. Different wiring harness lengths are produced and matched according to the different distances between two adjacent photovoltaic panels. Mass production will not cause waste of product inventory, and the wiring harness and the positive connectors at both ends of the wiring harness are standardized.

[0013] Preferably, the positive connector includes a shell, and a positive connector piece and a circuit breaker module installed in the shell. The circuit breaker module is located between the positive connector piece and the wiring harness, and is electrically connected to the positive connector piece and the wiring harness.

[0014] By adopting the above technical solution, the circuit breaker module is used to quickly cut off the electrical connection between the positive connector and the wiring harness, thereby cutting off the connection between two adjacent photovoltaic modules to eliminate the DC high voltage in the photovoltaic system array and reduce the risk of electric shock and rescue. In addition, the circuit breaker module is installed in the positive connector. When the circuit breaker module fails due to wear and tear, the staff only needs to remove the wiring harness and the positive connector and replace them, and then re-insert the new positive connector.

[0015] Preferably, the positive connector includes a shell and a positive connector and a power optimizer module installed in the shell. The power optimizer module is located between the positive connector and the wiring harness and is electrically connected to the positive connector and the wiring harness.

[0016] By adopting the above technical solution, the power optimizer module tracks the maximum power point of the photovoltaic module in real time, solves the problem of reduced power generation caused by shadow obstruction, differences in component orientation or differences in electrical specifications, and can achieve the maximum power output of the photovoltaic module; the power optimizer module is installed in the positive connector to facilitate rapid disassembly and replacement with a new one after the power optimizer module is worn out and fails.

[0017] Preferably, a socket is provided on the top of the box body, and the positive electrode connector is press-fitted into the socket.

[0018] By adopting the above technical solution and pressing up and down, the occurrence of improper insertion can be reduced, and it is safer and less likely to cause electric shock.

[0019] In a third aspect, the present application provides an installation and connection method, which adopts the following technical solution: An installation and connection method based on the above-mentioned photovoltaic system is used to connect two adjacent photovoltaic modules, including the following steps: S01. A box body is installed on each of the photovoltaic modules, and the number of box bodies installed on each photovoltaic module is three, and the negative plugs in the three box bodies are connected to the circuit inside the photovoltaic module to complete the electrical series connection of the three box bodies; S02. The box bodies between two adjacent photovoltaic modules are electrically connected through a wiring harness to complete the connection and assembly of multiple photovoltaic modules.

[0020] By adopting the above technical solution, the assembly between two adjacent photovoltaic modules becomes more convenient and quick. According to the distance between the two adjacent photovoltaic modules, a wiring harness of appropriate length can be selected for connection. Once the positive connector is damaged, it can also be quickly replaced.

[0021] In a third aspect, the present application provides a connection method, which adopts the following technical solution: In summary, the present application includes at least one of the following beneficial technical effects: 1. By electrically connecting the positive metal piece to the diode, and forming an electrical connection between the positive metal piece and the cable body, and then forming an electrical connection between the positive metal piece, the diode, and the cable body, the purpose of reducing the number of components inside the positive box body can be achieved, thereby reducing the heating of the components inside the positive box body, and thus ensuring its operational stability.

[0022] 2. The wiring harness and the positive connectors at both ends of the wiring harness can be used as a connection module for standardized production. According to the spacing requirements of the two photovoltaic modules, a connection module with a suitable length of the wiring harness can be selected, which is easy to install and achieves zero inventory of the connection module.

[0023] 3. Depending on the different currents and application scenarios, a disconnector module or a power optimizer module can be installed in the positive connector or the negative plug to enhance the functional types of the connector to meet different user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a partial structural diagram of Example 1 of the present application; Figure 3 It is a schematic diagram of the partial explosion structure of Example 1 of the present application; Figure 4 yes Figure 3 A magnified schematic diagram of the middle part; Figure 5 is a plan view of Example 2 of the present application; Figure 6 is a cross-sectional schematic diagram of the positive electrode connector and the box body in Example 2 of the present application, used to show the installation position of the circuit breaker module; Figure 7 is a cross-sectional schematic diagram of another implementation of the positive electrode connector in Example 2 of the present application, used to illustrate the installation position of the power optimizer module; Figure 8 It is a partial cross-sectional view of the box body and the positive connector in Example 3 of the present application, which is used to demonstrate the push-type plug-in method of the box body and the positive connector.

[0025] In the figure, 1. photovoltaic module; 2. box body; 3. negative plug; 4. positive plug; 5. positive box body; 6. positive metal part; 7. diode; 8. cable body; 9. sealing ring; 10. negative metal part; 11. positive connector; 1101. shell; 1102. positive connector; 12. wiring harness; 13. circuit breaker module; 14. power optimizer module; 15. connector. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0027] Embodiment 1: A new type of connector, referring to Figure 1 , including a photovoltaic component 1, a box body 2 is installed on the upper end of the photovoltaic component 1, a negative plug 3 is installed on the inner side of the box body 2, the inner side of the negative plug 3 is electrically connected to a negative metal piece 10, a positive plug 4 is movably connected to the upper end of the photovoltaic component 1, a sealing ring 9 is installed on the inner side of the positive plug 4, a positive metal piece 6 is installed on the inner side of the sealing ring 9, a positive box body 5 is fixedly connected to the front end of the positive plug 4, and a diode 7 is electrically connected to the upper end of the positive metal piece 6.

[0028] In this embodiment, the front end of the positive metal part 6 is electrically connected to the cable body 8, the negative plug 3 corresponds to the positive plug 4, the positive plug 4 is inserted into the inner side of the negative plug 3, the positive metal part 6 is installed on the inner side of the positive box body 5, the cable body 8 passes through the interior of the positive box body 5, the cable body 8 and the positive box body 5 are movably connected, and the positive metal part 6 corresponds to the negative metal part 10.

[0029] Specifically, first, the positive plug 4 is inserted into the inner side of the negative plug 3, so that the positive plug 4 is stuck on the inner side of the negative plug 3, and then the positive metal part 6 is inserted into the inner side of the negative metal part 10, and the negative metal part 10 contacts the positive metal part 6, and the negative metal part 10 and the positive metal part 6 are electrically connected. At the same time, the negative metal part 10, the positive metal part 6, the diode 7, and the cable body 8 are connected in series, and the positive metal part 6, the diode 7, and the cable body 8 are electrically connected in the inner side of the positive box body 5, and the positive metal part 6, the diode 7, and the cable body 8 are connected in series. By electrically connecting the positive metal part 6 to the diode 7, and forming an electrical connection between the positive metal part 6 and the cable body 8, and then forming an electrical connection between the positive metal part 6, the diode 7, and the cable body 8, the purpose of reducing the number of components in the inner side of the positive box body 5 can be achieved, thereby reducing the heating of the components in the inner side of the positive box body 5, and thus ensuring its operating stability.

[0030] In this embodiment, the negative metal part 10 is inserted into the inner side of the positive metal part 6, and the negative metal part 10 is electrically connected to the positive metal part 6. The main material of the sealing ring 9 is rubber. The diode 7 is located on the inner side of the positive box body 5. There are two groups of negative metal parts 10 and positive metal parts 6.

[0031] Specifically, by determining the required length of the cable body 8 according to the actual needs of the installation site, the cable body 8 is cut, thereby saving cable costs and reducing energy transmission losses.

[0032] The implementation principle of the embodiment of the present application is as follows: when in use, first insert the positive plug 4 into the inner side of the negative plug 3, so that the positive plug 4 is stuck in the inner side of the negative plug 3, and then the positive metal part 6 is inserted into the inner side of the negative metal part 10, and the negative metal part 10 contacts the positive metal part 6, and the negative metal part 10 and the positive metal part 6 are electrically connected, and at the same time, the negative metal part 10, the positive metal part 6, the diode 7, and the cable body 8 are connected in series, and the positive metal part 6, the diode 7, and the cable body 8 are electrically connected in the inner side of the positive box body 5, and the positive metal part 6, the diode 7, and the cable body 8 are connected in series, so that the negative metal part 10, the positive metal part 6, the diode 7, and the cable body 8 are connected in series, so that the negative metal part 10, the positive metal part 6, the diode 7, and the cable body 8 are connected in series. 7. The cable body 8 improves the current-carrying capacity of the connector, making its connection reliable, and increases the component circulation efficiency, optimizes the component structure, saves installation steps, and improves the current-carrying capacity of the connector. The required length of the cable body 8 can be determined according to the actual needs of the installation site, and the cable body 8 can be cut, so the cable cost can be saved and the energy transmission loss can be reduced. By electrically connecting the positive metal part 6 to the diode 7, and forming an electrical connection between the positive metal part 6 and the cable body 8, and then forming an electrical connection between the positive metal part 6, the diode 7, and the cable body 8, the purpose of reducing the number of components on the inner side of the positive box body 5 can be achieved, thereby reducing the heating of the components on the inner side of the positive box body 5, thereby ensuring its operational stability.

[0033] Embodiment 2: A photovoltaic system, referring to Figure 5 The system includes multiple embodiments 1, a wiring harness 12, and a positive connector 11 installed at both ends of the wiring harness 12. Different from the positive plug 4 in the embodiment, the positive connector 11 of the present application is used for electrically connecting the negative metal parts 10 on two adjacent photovoltaic components 1 (photovoltaic panels), thereby realizing the electrical connection of the two adjacent photovoltaic components 1.

[0034] In one implementation of this embodiment, there may be three box bodies 2 on the same photovoltaic component 1, and a negative plug 3 is installed in each box body 2. The three box bodies 2 are electrically connected in series through the positive plug 4 and the cable body 8.

[0035] In another implementation of the present embodiment, there may be three box bodies 2 on the same photovoltaic component 1, and the three photovoltaic components 1 are electrically connected in series through a circuit pre-buried in the photovoltaic component 1. The negative pole plug 3 is not connected externally, and the box body 2 is reserved for use in the scenario where two adjacent photovoltaic components 1 are connected.

[0036] Reference Figure 6In one implementation of the present embodiment, the positive connector 11 includes a housing 1101 and a positive connector piece 1102 and a circuit breaker module 13 installed in the housing 1101. The positive connector piece 1102 is electrically plugged into the negative plug 3. The circuit breaker module 13 is located between the positive connector piece 1102 and the wiring harness 12, and is electrically connected to the positive connector piece 1102 and the wiring harness 12. The circuit breaker module 13 is embedded in the positive connector 11, and is used to quickly disconnect the electrical connection between the negative plug 3 on the photovoltaic component 1 and the wiring harness 12, eliminate the DC high voltage in the photovoltaic system array, reduce the risk of electric shock and rescue risks, and ensure the personal safety of firefighters.

[0037] Reference Figure 7 In another implementation of the present embodiment, the positive connector 11 includes a housing 1101 and a positive connector piece 1102 and a power optimizer module 14 installed in the housing 1101. The positive connector 11 is electrically plugged into the negative plug 3. The power optimizer module 14 is located between the positive connector piece 1102 and the wiring harness 12, and is electrically connected to the positive connector piece 1102 and the wiring harness 12. The power optimizer module 14 tracks the maximum power point of the photovoltaic component 1 in real time, solves the problem of reduced power generation due to shadow obstruction, component orientation differences or electrical specification differences, and can achieve the maximum power output of the photovoltaic component 1.

[0038] Embodiment 3: A photovoltaic system, referring to Figure 8 The difference from Example 2 is that a socket 15 is provided on the top of the box body 2, and the positive connector 1102 on the positive connector 11 is inserted into the socket 15 to electrically connect with the negative metal piece 10 inside the box body 2.

[0039] Embodiment 4: A method for installing and connecting the above embodiment 2, the method comprising the following steps: S01. A box body 2 is installed on each photovoltaic module 1, and the number of box bodies 2 installed on each photovoltaic module 1 is three, and the negative plugs 3 in the three box bodies 2 are connected to the circuit inside the photovoltaic module 1 to complete the electrical series connection of the three box bodies 2; S02. The box bodies 2 between two adjacent photovoltaic modules 1 are electrically connected via a wiring harness 12 to complete the connection and assembly of multiple photovoltaic modules 1.

[0040] The implementation principle of the embodiment of the present application is: the wiring harness and the positive connectors located at both ends of the wiring harness are modularized, and two adjacent photovoltaic components (photovoltaic panels) are connected by a plug-in electrical connection method.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A novel connector, comprising a photovoltaic module (1), characterized in that: The upper end of the photovoltaic module (1) is equipped with a box body (2), the inner side of the box body (2) is equipped with a negative plug (3), the inner side of the negative plug (3) is electrically connected to a negative metal piece (10), the upper end of the photovoltaic module (1) is movably connected with a positive plug (4), the inner side of the positive plug (4) is equipped with a sealing ring (9), the inner side of the sealing ring (9) is equipped with a positive metal piece (6), the front end of the positive plug (4) is fixedly connected to a positive box body (5), and the upper end of the positive metal piece (6) is electrically connected to a diode (7).

2. A new type of connector according to claim 1, characterized in that: The front end of the positive metal piece (6) is electrically connected to a cable body (8), and the negative plug (3) corresponds to the positive plug (4).

3. A new type of connector according to claim 2, characterized in that: The positive electrode plug (4) is inserted into the inner side of the negative electrode plug (3), and the positive electrode metal piece (6) is installed in the inner side of the positive electrode box body (5).

4. A new type of connector according to claim 2, characterized in that: The cable body (8) passes through the interior of the positive electrode box (5), the cable body (8) and the positive electrode box (5) are movably connected, and the positive electrode metal piece (6) and the negative electrode metal piece (10) correspond to each other.

5. A new type of connector according to claim 2, characterized in that: The negative electrode metal piece (10) is inserted into the inner side of the positive electrode metal piece (6), and the negative electrode metal piece (10) is electrically connected to the positive electrode metal piece (6).

6. A new type of connector according to claim 2, characterized in that: The main body material of the sealing ring (9) is rubber, the diode (7) is located inside the positive electrode box body (5), and the number of the negative electrode metal parts (10) and the positive electrode metal parts (6) are both two groups.

7. A photovoltaic system, comprising a plurality of novel connectors according to any one of claims 1 to 6, characterized in that: The system further comprises a wiring harness (12) and positive connectors (11) installed at both ends of the wiring harness (12); the negative plug (3) on each photovoltaic module (1) is electrically plugged into the positive connector (11) on the wiring harness (12); and two adjacent photovoltaic modules (1) are electrically connected via the wiring harness (12).

8. A photovoltaic system according to claim 7, characterized in that: The positive connector (11) comprises a housing (1101), a positive connector piece (1102) and a circuit breaker module (13) installed in the housing (1101); the circuit breaker module (13) is located between the positive connector piece (1102) and the wiring harness (12), and is electrically connected to the positive connector piece (1102) and the wiring harness (12).

9. A photovoltaic system according to claim 7, characterized in that: The positive connector (11) comprises a housing (1101), a positive connector piece (1102) and a power optimizer module (14) installed in the housing (1101); the power optimizer module (14) is located between the positive connector piece (1102) and the wiring harness (12), and is electrically connected to the positive connector piece (1102) and the wiring harness (12).

10. A photovoltaic system according to claim 9, characterized in that: The top of the box body (2) is provided with a socket (15), and the positive electrode connector (11) is press-fitted into the socket (15).

11. A method for installing and connecting a photovoltaic system according to any one of claims 7 to 10, used for connecting two adjacent photovoltaic modules (1), characterized in that: The following steps are included: S01. A box body (2) is installed on each photovoltaic module (1), and the number of box bodies (2) installed on each photovoltaic module (1) is three, and the negative plugs (3) in the three box bodies (2) are connected to the circuit inside the photovoltaic module (1), so as to complete the electrical series connection of the three box bodies (2); S02. The box bodies (2) between two adjacent photovoltaic modules (1) are electrically connected via a wiring harness (12), thereby completing the connection and assembly of a plurality of photovoltaic modules (1).

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