Photovoltaic module harness

Abstract

This utility model proposes a photovoltaic module wiring harness, including multiple DC connecting lines, a wiring harness fixing structure, and a sealing element. The multiple DC connecting lines are connected side by side to the wiring harness fixing structure. Each DC connecting line includes a wire connected to the wiring harness fixing structure, a terminal connected to the other end of the wire, a terminal connector housing covering the outside of the terminal, and a nut connected to the terminal connector housing. The sealing element is connected to the other side of the wiring harness fixing structure. This utility model integrates multiple DC connecting lines into one wiring harness fixing structure, and through the action of the sealing ring, the waterproof protection level can reach IP67 sealing effect. Moreover, the multi-line integrated layout can reduce installation space and simplify on-site operations.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic connection products, and more particularly to a photovoltaic module harness. Background Technology

[0002] Green energy is a sustainable energy source that has a small impact on the environment during production and use and can be continuously replenished by natural resources. The energy generated by solar energy can be absorbed and converted into electrical energy by photovoltaic panels. After the photovoltaic panels convert solar energy into direct current and store it, the direct current is then connected to an inverter through a DC wiring harness to convert the direct current into alternating current.

[0003] Generally, photovoltaic panels and inverters are connected by DC wiring harnesses. Current DC wiring harnesses are mostly designed with single wires. Multiple wires are bundled together at one time, requiring additional methods such as potting, waterproof connectors or sealing rings for fixation and sealing before assembly can be completed.

[0004] Photovoltaic panels are mostly used in remote outdoor locations. Existing DC harnesses require multiple assembly and waterproofing operations due to the independent nature of the wires during plugging and unplugging, resulting in lengthy on-site operations. Improper assembly may also lead to rainwater seeping into the wires, affecting power conversion efficiency or energy storage. Based on the aforementioned problems, the inventors have improved the existing DC harnesses. Utility Model Content

[0005] Given that existing DC wiring harnesses are assembled separately between the inverter and the photovoltaic panel, resulting in lengthy operation times and poor waterproofing, the inventors have proposed a photovoltaic module wiring harness that is sealed and fixed to an inverter at one end, and includes multiple DC connection wires, a wiring harness fixing structure, and a sealing element; wherein,

[0006] Multiple DC connection wires include a wire, one end of which passes through the wire harness fixing structure and is used to connect to the inverter; a terminal, which is connected to one end of the wire; a nut, which is disposed on the outside of the terminal and connected to the end of the wire; and a connector housing, which is correspondingly connected to the nut.

[0007] A wiring harness fixing structure, one side of which is fixed to the inverter;

[0008] A sealing element is installed between the wiring harness fixing structure and the inverter.

[0009] Preferably, the photovoltaic module wiring harness has four DC connection lines, which are arranged side by side in sequence on the wiring harness fixing structure.

[0010] Preferably, in the photovoltaic module wiring harness, the DC connection wires are arranged side by side in the order of male, female, male, female.

[0011] Preferably, the photovoltaic module wiring harness further includes a sealing ring between the nut and the connector housing.

[0012] Preferably, in the photovoltaic module harness, one side of the harness fixing structure is fixed to the inverter by a screw fastening method.

[0013] Preferably, in the photovoltaic module wiring harness, a copper ring is provided between the wire and the wiring harness fixing structure.

[0014] Preferably, the photovoltaic module wiring harness has a wiring harness fixing structure with multiple covering holes for covering each wire.

[0015] The photovoltaic module wiring harness of this utility model integrates multiple DC connection lines onto a single structure through a wiring harness fixing structure that is integrally wrapped. This allows the wiring harness fixing structure to lock and fix with the inverter after installation. Furthermore, through the action of the sealing ring, the waterproof protection level can reach IP67. The multi-line integrated layout can reduce the installation space, providing more space for inverter design and simplifying on-site installation work. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the photovoltaic module wiring harness of this utility model.

[0017] Figure 2 This is an exploded view of the photovoltaic module wiring harness of this utility model.

[0018] Figure 3 This is a schematic diagram showing the connection of the photovoltaic module harness of this utility model with other devices. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "one side," "one end," and "one side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0025] like Figures 1-2 As shown, this utility model is a photovoltaic module wiring harness, which includes multiple DC connection lines 10, a wiring harness fixing structure 20, and a sealing element 30;

[0026] The multiple DC connection lines 10 are connected to the wire harness fixing structure 20 in a side-by-side manner. Each DC connection line 10 includes a wire 11, a terminal 12, a nut 13, and a connector housing 14. One end of the wire 11 is riveted with a copper ring and is covered by the wire harness fixing structure 20. It extends outward from the wire harness fixing structure 20 and is used to connect to the inverter. The other end of the wire 11 is connected to the terminal 12. The nut 13 is located outside the terminal 12 and connected to the end of the wire 11. The connector housing 14 is screwed into the inside of the nut 13. Preferably, in this embodiment, there are four DC connection lines 10, which are connected to the wire harness fixing structure 20 in a side-by-side manner. Among them, there are two male wires and two female wires in the DC connection lines 10. The four wires are arranged in the order of male, female, male, female. This order is only a specific arrangement in this embodiment. In fact, it can be set according to design requirements. In addition, a sealing ring is further provided between the nut 13 and the connector housing 14 to improve waterproof performance.

[0027] The copper rings used to rivet the wire serve two main purposes: one is to prevent the wire from rotating within the integrated wire harness fixing structure, and the other is to increase tensile strength, i.e., load-bearing capacity. The connection between the cable and the integrated wire harness fixing structure can achieve a load of 200N for 60 seconds without falling off or breaking, and the displacement does not exceed 2mm.

[0028] like Figure 1 and Figure 2 As shown, the wire harness fixing structure 20 is an elongated block integrally injection molded onto one end of each DC connection line 10. The wire harness fixing structure 20 can cover and position each direct connection line 10. Copper rings are riveted to the outer side of each wire 11 of the DC connection line 10. The wire harness fixing structure 20 is integrally injection molded and riveted to the outer side of each copper ring. Covering the riveted copper rings with the wire harness fixing structure 20 can increase the tensile strength of the wire harness. Furthermore, the wire harness fixing structure 20 can position multiple DC connection lines 10 at once, eliminating the need to fix each DC connection line 10 to the inverter one by one. After each wire 11 of the DC connection line 10 is covered and fixed to the wire harness fixing structure 20, it extends to one side and passes through the sealing member 30, and extends out of the bare wire from the other side of the sealing member 30.

[0029] Preferably, the wire harness fixing structure 20 is a long strip structure integrally molded from plastic, and four covering holes are provided on the wire harness fixing structure 20 to cover the outside of the DC connecting line 10 respectively. Each covering hole can also be used to position the DC connecting line 10 so that it is not easy to loosen or fall off. The wire harness fixing structure 20 can completely cover the wire harness with the riveted copper ring, which greatly increases the tensile strength of the wire harness.

[0030] like Figure 3The diagram illustrates the usage of this utility model. Each DC connection cable 10 has one end of its bare wire welded to the inverter according to the inverter's configuration. The wire harness fixing structure 20 is then fixed to the inverter T using screws. The sealing element 30 is positioned between the wire harness fixing structure 20 and the inverter. The wire harness fixing structure 20 covers the outside of the bare wire of each direct connection cable 10 to improve waterproofing. The other end of each DC connection cable 10 is used to connect to the photovoltaic panel S. The DC power generated by the photovoltaic panel S is introduced into the inverter T through the DC connection cable 10 and converted into AC power. Through the aforementioned design, the wire harness fixing structure 20 is directly fixed to the inverter T, and the sealing element 30 enhances waterproofing. The DC connection cable 10 itself is also waterproof. When connecting to the photovoltaic panel S, only simple plugging and unplugging is required; installation at both ends is unnecessary.

[0031] The advantages of the photovoltaic module wiring harness proposed in this utility model are that the wiring harness fixing structure can integrate multiple DC connection lines into one wiring harness fixing structure. The wiring harness fixing structure is easy to assemble, has higher construction efficiency, and lower cost. Through the action of the sealing ring, it is fixed to the inverter with screws after installation. After one end of the DC connection line is covered by the wiring harness fixing structure and the sealing ring, the waterproof protection level can reach IP67 sealing effect. Moreover, the multi-line integrated layout can reduce the installation space, bring more space for inverter design, and simplify on-site installation work.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A photovoltaic module wiring harness, one end of which is sealed and fixed to an inverter, characterized in that, include: Multiple DC connection cables, including A wire, one end of which passes through the wire harness fixing structure and is used to connect to the inverter; One terminal connects to one end of the wire; A nut, located on the outside of the terminal and connected to the end of the wire; A connector housing, which is connected to the nut; The wiring harness fixing structure is integrally injection molded and covers one side of multiple straight connecting lines, and is detachably connected to the inverter. A sealing element is disposed between the wire harness fixing structure and the inverter. The DC connection wire passes through the wire harness fixing structure and the sealing element and is then connected to the inverter.

2. The photovoltaic module wiring harness as described in claim 1, characterized in that, Four DC connection lines are provided, which are arranged side by side in sequence on the wire harness fixing structure.

3. The photovoltaic module wiring harness as described in claim 2, characterized in that, The DC connection lines are arranged side by side in the order of male, female, male, female.

4. The photovoltaic module wiring harness as described in any one of claims 1 to 3, characterized in that, A sealing ring is further provided between the nut and the connector housing.

5. The photovoltaic module wiring harness as described in any one of claims 1 to 3, characterized in that, One side of the wire harness fixing structure is fixed to the inverter by screws.

6. The photovoltaic module harness as described in any one of claims 1 to 3, characterized in that... A copper ring is provided between the wire and the wire harness fixing structure.

7. The photovoltaic module harness as described in claim 6, characterized in that... The wire harness fixing structure is provided with multiple covering holes, which can be used to cover various wires.

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