Connector, Cable Assembly and Photovoltaic System

Abstract

The present application relates to a connector, a cable assembly, and a photovoltaic system. The connector includes: a connection body; a first connection component, including a first connection wire and a first insertion member, the first connection wire is connected to the connection body and is located on one side of the connection body, and the first insertion member is connected to the end of the first connection wire away from the connection body; and a second connection component, including a second insertion member, the second insertion member is located on the other side of the connection body, and one of the first insertion member and the second insertion member is a male head and the other is a female socket that can be adapted to the male head. When it is necessary to connect two connectors, the first insertion member and the second insertion member can be directly matched to achieve the direct connection of the two connectors, thus eliminating the need for an intermediate connection component. In this way, on the one hand, the installation of the intermediate connection component can be omitted, thereby improving the convenience of connector installation and ultimately improving the installation efficiency between connectors.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and particularly to a connector, a cable assembly, and a photovoltaic system. Background Art

[0002] With the rapid development of new energy technologies, solar energy has been increasingly applied to people's production and life due to its advantages such as pollution-free and sustainable utilization. Generally, solar energy can be converted into electrical energy through photovoltaic power generation technology. That is, the direct current generated by photovoltaic power generation is converted into alternating current through an inverter, and this alternating current can be input into the power grid through a connector. However, for traditional connectors, there are usually defects such as inconvenient installation. Summary of the Invention

[0003] One technical problem solved by this application is how to improve the convenience of connector installation.

[0004] In a first aspect of this application, a connector is provided, including:

[0005] A connection body;

[0006] A first connection component, including a first connection wire and a first insertion member. The first connection wire is connected to the connection body and is located on one side of the connection body, and the first insertion member is connected to the end of the first connection wire away from the connection body; and

[0007] A second connection component, including a second insertion member. The second insertion member is located on the other side of the connection body. One of the first insertion member and the second insertion member is a male head and the other is a female seat that can be adapted to the male head.

[0008] In one embodiment, the second insertion member is directly connected to the end of the connection body.

[0009] In one embodiment, it further includes a third connection component. The third connection component is connected to the connection body and is used to cooperate with an inverter.

[0010] In one embodiment, the third connection component includes a third connection wire and a third insertion member. The third connection wire is connected to the middle of the connection body, and the third insertion member is connected to the end of the third connection wire away from the connection body. The third insertion member is used to cooperate with an inverter.

[0011] In one embodiment, both the first connection wire and the third connection wire include a neutral wire and a live wire, or two live wires, or both the first connection wire and the third connection wire include a neutral wire, a live wire, and a ground wire, or both the first connection wire and the third connection wire include two live wires and a ground wire.

[0012] In one embodiment, the length of the third connecting line is from 0.1 m to 0.5 m.

[0013] In one embodiment, the first connecting component and / or the third connecting component includes a wire bundling portion.

[0014] In one embodiment, the connecting body includes a wire bundling portion, and the first connecting line is inserted into the wire bundling portion.

[0015] In one embodiment, a plurality of hollow holes communicating with the connecting hole are formed on the outer surface of the wire bundling portion.

[0016] In one embodiment, the second insertion member and the third insertion member have the same structure.

[0017] In one embodiment, the extending direction of the third connecting component forms an angle of 30° to 150° with the extending directions of the first connecting component and the second connecting component.

[0018] In one embodiment, the extending direction of the third connecting component is perpendicular to the extending directions of the first connecting component and the second connecting component.

[0019] In one embodiment, the extending directions of both the first connecting component and the second connecting component are located on the same straight line.

[0020] In one embodiment, the length of the first connecting line is from 1 m to 5 m.

[0021] In one embodiment, the first insertion member is a female socket, and the second insertion member is a male head.

[0022] In one embodiment, the first and / or second insertion member includes a first layer and a second layer, the hardness of the first layer is greater than that of the second layer, the first layer covers at least part of the second layer, and the first connecting line is inserted into the first layer.

[0023] The second aspect of the present application provides a cable assembly, including a plurality of connectors as described in any one of the above, and the first insertion member and the second insertion member arranged adjacent to each other in adjacent two connectors cooperate with each other.

[0024] In one embodiment, an extension cable is further included, the extension cable is connected between the first insertion member and the second insertion member of adjacent two connectors, and the extension cable is connected to the connector at the outermost end.

[0025] A third aspect of the present application provides a photovoltaic system, including an inverter, a busbar box, and the cable assembly described in any one of the above. The inverter is connected to the connection body, and the busbar box is connected to the first insertion member of the connector located at the outermost end.

[0026] In one embodiment, the inverter includes a fourth insertion member. The inverter is connected to the cable assembly through the fourth insertion member, and the fourth insertion member has the same structure as the first insertion member.

[0027] In one embodiment, the inverter is a micro-inverter.

[0028] In one embodiment, an installation rail is further included. The inverter is fixedly connected to the installation rail, at least a part of the cable assembly is fixed on the installation rail, and the extending direction of the first connection line is the same as the extending direction of the installation rail.

[0029] A technical effect of an embodiment of the present application is that in view of the fact that one of the first insertion member and the second insertion member is a male head and the other is a female socket, the male head and the female socket can be adapted to each other. When it is necessary to connect two connectors, the first insertion member and the second insertion member can be directly matched to realize the direct connection of the two connectors, thus eliminating the need for an intermediate connection component. On the one hand, the installation of the intermediate connection component can be omitted, thereby improving the convenience of connector installation and ultimately improving the installation efficiency between connectors. On the other hand, as long as the two connectors do not fail, the normal connection of the two connectors can be realized, avoiding the normal connection of the two connectors being affected by the failure of the intermediate connection component. In this way, the failure rate of the connection between connectors can be reduced. On the other hand, the cancellation of the intermediate connection component can make the connection structure formed by connecting multiple connectors simpler in structure, thereby reducing the manufacturing cost of the entire connection structure. Description of the Drawings

[0030] Figure 1 It is a schematic plan view of a connector provided for an embodiment.

[0031] Figure 2 It is a schematic plan view of a photovoltaic system provided for an embodiment.

[0032] Figure 3 It is a schematic plan view of a photovoltaic system provided for another embodiment.

[0033] Figure 4 It is a schematic circuit diagram of a photovoltaic system provided for an embodiment.

[0034] Figure 5 It is a schematic partial structure view of a photovoltaic system with an installation rail provided for still another embodiment.

[0035] Figure 6 Perspective structural schematic diagram of a connector provided for an embodiment.

[0036] Reference numerals: photovoltaic system 40, inverter 20, fourth insertion member 21, busbar box 30, cable assembly 10, connector 11, extension cable 12, photovoltaic module 50, connector 11, first connection assembly 100, first connection line 110, first insertion member 120, second connection assembly 200, first layer 211, second layer 212, second insertion member 220, connection body 300, wire bundling portions 310, 130, 430, connection holes 311, hollow holes 312, third connection assembly 400, third connection line 410, third insertion member 420, neutral wire 101, live wire 102, ground wire 103. Detailed implementation manners

[0037] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0039] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise clearly defined or limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In this application, unless otherwise clearly defined or limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0043] Refer to Figure 1 , Figure 2 and Figure 3 , a connector 11 provided in an embodiment of this application can be applied to photovoltaic power generation technology. The electric energy generated by the photovoltaic module 50 is input to the inverter 20 in the form of direct current. The inverter 20 converts the direct current from the photovoltaic module 50 into alternating current. The alternating current converted by the inverter 20 can be input to the busbar box 30 through the connector 11. The busbar box 30 is then connected to the power grid or directly supplies power to an AC load, so as to apply the electric energy generated by photovoltaic power generation to various life and production activities of society. It can be understood that in a specific embodiment, the numbers of the photovoltaic module 50, the inverter 20 and the connector 11 are equal and form a one-to-one correspondence. The connector 11 includes a first connection component 100, a second connection component 200 and a connection body 300, and the connection body 300 is connected to the inverter 20. In a specific embodiment, the busbar box 30 includes a distribution switch and a gateway controller.

[0044] Refer to Figure 1 、 Figure 2 and Figure 3 ,In some embodiments, the first connection component 100 includes a first connection line 110 and a first insertion member 120. One end of the first connection line 110 is connected to the connection main body 300, and one end of the first insertion member 120 away from the connection main body 300 is connected to the first connection line 110, so that the first insertion member 120 is located on one side of the connection main body 300. In a specific embodiment, the second connection component 200 includes a second insertion member 220, and the second insertion member 220 can be directly connected to the other end of the connection main body 300, so that the second insertion member 220 is located on the other side of the connection main body 300. In another specific embodiment, the second insertion member 220 is directly connected to the other end of the connection main body 300 through a connection line. One of the first insertion member 120 and the second insertion member 220 is a male head and the other is a female socket, and the male head and the female socket can be adapted to each other. For example, the first insertion member 120 can be a female socket and the second insertion member 220 can be a male head. Refer to Figure 1 、 Figure 2 and Figure 3 ,In other embodiments, the second connection component 200 may further include a second connection line. The second connection line is directly connected to the other end of the connection main body 300, and the second insertion member 220 is connected to one end of the second connection line away from the connection main body 300. The first insertion member 120 can be a male head and the second insertion member 220 can be a female socket.

[0045] If the first insertion member 120 and the second insertion member 220 are both male heads or female sockets at the same time, when two connectors 11 need to be connected, the two connectors 11 cannot be directly connected, and an intermediate connection component needs to be used to connect two adjacent connectors 11, which increases the number of connection head terminals. More time is required for the plugging and unplugging operation of the connection head during installation. On the one hand, this makes the installation of the two connectors 11 time-consuming and laborious, which is not conducive to the convenience of the installation of the connectors 11, thus reducing the working efficiency of the installation of the connectors 11. On the other hand, in the case where the two connectors 11 are normal but the intermediate connection component fails, the two connectors 11 cannot work properly, thus increasing the failure rate. On the third hand, the existence of the intermediate connection component will make the entire connection structure more complex and also increase the manufacturing cost of the entire connection structure. The connector provided by the present invention uses the fewest number of connection head terminals, does not require pressing the connection line of the cable on site, and can save working hours when the cable is manually installed on site, improving the wiring efficiency.

[0046] Refer to Figure 1 、 Figure 2 and Figure 3, for the connector 11 in the above embodiments, since one of the first insert 120 and the second insert 220 is a male head and the other is a female socket, the male head and the female socket can be adapted to each other. When it is necessary to connect two connectors 11, the first insert 120 and the second insert 220 can be directly mated to achieve the direct connection of the two connectors 11, thus eliminating the need for an intermediate connection component. In this way, on the one hand, the installation of the intermediate connection component can be omitted, thereby improving the convenience of installing the connector 11 and ultimately improving the working efficiency of installing the connectors 11. On the other hand, as long as the two connectors 11 do not malfunction, the normal connection of the two connectors 11 can be achieved, avoiding the influence of the normal connection of the two connectors 11 due to the malfunction of the intermediate connection component, so that the failure rate of the connection between the connectors 11 can be reduced. On the other hand, the cancellation of the intermediate connection component can make the connection structure formed by connecting multiple connectors 11 simpler in structure, thereby reducing the manufacturing cost of the entire connection structure.

[0047] In harsh environments such as deserts, sand and dust are likely to invade the inside of the threaded mating structure, causing the connector to jam, thus affecting the smooth connection of the connector. The connector with an insert structure provided by the present invention can achieve snap connection through the cooperation of the male head and the female socket, thereby avoiding the problems brought by threaded connection and eliminating the obstructive effect of sand and dust on the connection of two adjacent connectors during the connection process. In addition, compared with the threaded connection method commonly used in the prior art, the connector provided by the present invention does not require on-site wire pressing and directly completes the snap connection during installation, which not only saves installation time, but also reduces the risk of large contact resistance caused by inconsistent torque assembly brought by threaded connection. At the same time, it also avoids a series of risks brought by unprofessional on-site crimping tools resulting in the crimping quality not meeting the standards.

[0048] Refer to Figure 1 , Figure 2 and Figure 3, in some embodiments, the connection body 300 includes a wire bundling portion 310, which is provided at an end of the connection body 300. In a specific embodiment, a connection hole 311 is formed in the wire bundling portion 310. The connection hole 311 extends along the axial direction of the wire bundling portion 310. The first connecting wire 110 is inserted into the connection hole 311, so that an interference fit relationship can be formed between the first connecting wire 110 and the connection hole 311, thereby realizing the interference connection between the first connecting wire 110 and the wire bundling portion 310. In other embodiments, the wire bundling portion 310 can be a claw structure, and the claw structure is sleeved on the first connecting wire 110. Therefore, through the action of the wire bundling portion 310, the first connecting wire 110 can be prevented from being bent, which is beneficial to the fixation of the first connecting wire 110. Further, hollow holes 312 can be formed in the wire bundling portion 310. The hollow holes 312 are distributed on the outer surface of the wire bundling portion 310. The hollow holes 312 are through holes, so that the hollow holes 312 communicate the connection hole 311 with the outside. By providing the hollow holes 312, the friction force between the first connecting wire 110 and the wire bundling portion 310 can be reasonably increased, and the connection strength between the first connecting wire 110 and the wire bundling portion 310 can be further improved. And it can also save materials, thereby reducing the manufacturing cost.

[0049] The wire bundling portion 310 is generally in a horn shape. From the direction of the second insertion member 220 to the first insertion member 120, the cross-sectional dimension of the wire bundling portion 310 can gradually decrease, so that the inner wall of the connection hole is generally in a tapered shape that converges inward. In this way, the wire bundling portion 310 can play a good binding role on the first connecting wire 110 inserted therein. At the same time, the wire bundling portion 310 also has better flexibility and toughness. During the installation process of the connector 11, the wire bundling portion 310 will swing reciprocally. In view of the better flexibility and toughness of the wire bundling portion 310, the extrusion force generated by the reciprocally swinging wire bundling portion 310 on the first connecting wire 110 at the connection part of the two can be avoided, and the insulating layer outside the first connecting wire 110 can be prevented from being damaged by the frequently swinging wire bundling portion 310. In fact, the position on the first connecting wire 110 that is most affected by the alternating swing stress is the connection part of the first connecting wire 110 and the connection body 300, that is, the position where the wire bundling portion 310 is located. By making the wire bundling portion 310 have better flexibility and toughness, the alternating stress at the connection part of the first connecting wire 110 and the wire bundling portion 310 can be reduced, and the insulating layer of the first connecting wire 110 can be prevented from generating cracks due to fatigue under the action of the alternating stress. Of course, through the hollow holes 312, the flexibility and toughness of the wire bundling portion 310 can be further improved.

[0050] The first connection component 100 may also include a wire bundling portion 130. The first connecting wire 110 is inserted into the wire bundling portion 130. Therefore, through the function of the wire bundling portion 130, the bending of the first connecting wire 110 can be further avoided. The third connection component 400 may also include a wire bundling portion 430. Therefore, through the function of the wire bundling portion 130, the bending of the third connecting wire 410 can be further avoided. The wire bundling portion 130 of the first connection component 100, the wire bundling portion 430 of the third connection component 400, and the wire bundling portion 310 of the connection body 300 may be completely the same in structure.

[0051] Refer to Figure 1 , Figure 2 and Figure 3 , in some embodiments, the connector 11 further includes a third connection component 400. The third connection component 400 is connected to the middle part of the connection body 300, and the third connection component 400 is used to connect to the inverter 20, so that the alternating current output by the inverter 20 can be input to the first connection component 100 and the second connection component 200 through the third connection component 400 via the connection body 300. The third connection component 400 includes a third connecting wire 410 and a third insertion member 420. The third connecting wire 410 is connected to the middle part of the connection body 300. The third insertion member 420 is connected to one end of the third connecting wire 410 away from the connection body 300. The third insertion member 420 is used to cooperate with the inverter 20. In other embodiments, the third connection component 400 may only include the third insertion member 420, thereby omitting the third connecting wire 410, and the third insertion member 420 is directly connected to the middle part of the connection body 300.

[0052] In some embodiments, the extending directions of both the first connection component 100 and the second connection component 200 may be located on the same straight line. The extending direction of the third connection component 400 may be set at an angle of 30° to 150° with the extending direction of the first connection component 100. For example, the value of this angle may be 30°, 50°, 60°, 90° or 150°, etc. When the angle is 90°, the extending direction of the third connection component 400 is perpendicular to the extending directions of both the first connection component 100 and the second connection component 200 at the same time. In this way, the manufacturing process of the connector 11 can be appropriately simplified, thereby reducing the manufacturing cost of the connector 11. At the same time, it is also convenient for the connection between the connectors 11 and the connection between the connector 11 and the inverter 20.

[0053] In some embodiments, taking the connection position of the third connection component 400 and the connection body 300 as the reference position, the distances from the first insertion member 120 and the second insertion member 220 to this reference position are not equal. Thus, the asymmetric setting of the first insertion member 120 and the second insertion member 220 relative to the third connection component 400 can be realized. In this way, it is beneficial to improve the flexibility of the installation between the connectors 11, thereby improving the convenience of the installation of the connectors 11.

[0054] In some embodiments, the length of the first connection line 110 may be greater than or equal to the length of the third connection line 410, which can also ensure the flexibility of the installation between the connectors 11, thereby improving the convenience of the installation of the connectors 11. The length of the first connection line 110 may be from 1 m to 5 m. For example, the length of the first connection line 110 may be 1 m, 2 m, 3 m, or 5 m, etc. Preferably, the length of the first connection line 110 may be 1.3 m, 2.3 m, or 4.6 m, etc. The length of the third connection line 410 may be from 0.1 m to 0.5 m. For example, the length of the third connection line 410 may be 0.1 m, 0.2 m, 0.3 m, or 0.5 m, etc.

[0055] Refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the connection body 300 includes a wire bundling portion 310. The wire bundling portion 310 is disposed in the middle of the connection body 300. A connection hole 311 is formed in the wire bundling portion 310. The connection hole 311 extends along the axial direction of the wire bundling portion 310. The third connection line 410 is inserted into the connection hole 311, which can make the third connection line 410 and the connection hole 311 form an interference fit relationship, thereby realizing the interference connection between the third connection line 410 and the wire bundling portion 310. Therefore, through the function of the wire bundling portion 310, the third connection line 410 can be prevented from being bent, which is beneficial to the fixation of the third connection line 410. Further, through holes 312 may be formed in the wire bundling portion 310. The through holes 312 are distributed on the outer surface of the wire bundling portion 310. The through holes 312 are through holes, so that the through holes 312 communicate the connection hole 311 and the outside. By providing the through holes 312, the friction force between the third connection line 410 and the wire bundling portion 310 can be reasonably enhanced, and the connection strength between the third connection line 410 and the wire bundling portion 310 can be further improved.

[0056] In some embodiments, the second insertion member 220 and the third insertion member 420 have the same structure. During the manufacturing process of the connector 11, the second insertion member 220 and the third insertion member 420 can be formed by using the same mold, which can reduce the design and manufacturing costs of mold development, thereby reducing the manufacturing cost of the connector 11.

[0057] Refer to Figure 2 、 Figure 3 and Figure 4, in some embodiments, the first connection line 110 includes a neutral line 101 and a live line 102, and the third connection line 410 also includes a neutral line 101 and a live line 102. The neutral line 101 of the first connection line 110 is electrically connected to the neutral line 101 of the third connection line 410 through the circuit structure of the connection body 300, and the neutral line circuit in the second insertion member 220 is electrically connected to the neutral line 101 of the third connection line 410 through the circuit structure of the connection body 300. The live line 102 of the first connection line 110 is electrically connected to the live line 102 of the third connection line 410 through the circuit structure of the connection body 300, and the live line circuit in the second insertion member 220 is electrically connected to the live line 102 of the third connection line 410 through the circuit structure of the connection body 300. Further, the first connection line 110 may further include a ground line 103, and the third connection line 410 may also include a ground line 103. The ground line 103 of the first connection line 110 is electrically connected to the ground line 103 of the third connection line 410 through the circuit structure of the connection body 300, and the ground line 103 circuit in the second insertion member 220 is electrically connected to the ground line 103 of the third connection line 410 through the circuit structure of the connection body 300. In other embodiments, for example, both the first connection line 110 and the third connection line 410 include two live lines 102, or both the first connection line 110 and the third connection line 410 may include two live lines 102 and a ground line 103.

[0058] Refer to Figure 1 and Figure 6 , in some embodiments, the first insertion member 120 may be formed by a double injection molding process, that is, the first insertion member 120 may include two layers of materials, which are respectively denoted as the first layer 211 and the second layer 212. The hardness of the first layer 211 is greater than that of the second layer 212, and the first layer 211 covers at least a part of the second layer 212. For example, the first layer 211 may cover the second layer 212 such that a part of the second layer 212 is outside the first layer 211, or the first layer 211 may cover the entire second layer 212 such that the entire second layer 212 is inside the first layer 211. The first connection line 110 is inserted into the first layer 211. By using the harder first layer 211 to wrap the softer second layer 212, on the one hand, the wear resistance of the first insertion member 120 can be improved, and the service life of the first insertion member 120 can be extended; on the other hand, the connection strength between the first insertion member 120 and the first connection line 110 can be improved.

[0059] Refer to Figure 1 and Figure 6, in some embodiments, the second insertion member 220 may adopt the same design pattern as the first insertion member 120, that is, the second insertion member 220 is also formed by a two-shot injection molding process. That is, the second insertion member 220 may include two layers of materials, which are respectively denoted as the first layer 211 and the second layer 212. The hardness of the first layer 211 is greater than that of the second layer 212, and the first layer 211 covers at least a part of the second layer 212.

[0060] Refer to Figure 2 , the present application also provides a cable assembly 10. The cable assembly 10 includes a plurality of connectors 11, and the plurality of connectors 11 can be sequentially connected in a straight line. During the connection process, the first insertion member 120 and the second insertion member 220 that are adjacent to each other in adjacent two connectors 11 cooperate with each other. Therefore, the first insertion member 120 and the second insertion member 220 that are not adjacent to each other in adjacent two connectors 11 do not form a cooperative relationship. In view of the fact that any two adjacent connectors 11 in the cable assembly 10 can be directly connected, the use of an intermediate connection component can be omitted. In this way, on the one hand, the installation of the intermediate connection component can be omitted, thereby improving the installation convenience of the cable assembly 10 and ultimately improving the working efficiency of the installation of the cable assembly 10. On the other hand, as long as the connectors 11 do not fail, the normal connection of the cable assembly 10 can be achieved, and the normal connection of the cable assembly 10 is prevented from being affected by the failure of the intermediate connection component. In this way, the failure rate of the cable assembly 10 can be reduced. On the other hand, the cancellation of the intermediate connection component can make the cable assembly 10 simpler in structure, thereby reducing the manufacturing cost of the entire cable assembly 10.

[0061] Refer to Figure 3 , in some embodiments, the cable assembly 10 may further include an extension cable 12. The length of the extension cable 12 may be from 0.5 m to 30 m. For example, the length of the extension cable 12 may be 0.5 m, 1 m, 10 m, or 15 m, etc. In view of the fact that the third connection component 400 is directly connected to the inverter 20, in some special working conditions, the distance between adjacent two photovoltaic modules and / or the inverter 20 is relatively large, so that the distance between adjacent two connectors 11 connected to the two inverters 20 is relatively large. In this way, the first insertion member 120 and the second insertion member 220 of the adjacent two connectors 11 cannot be connected due to the too large distance. At this time, through the action of the extension cable 12, one end of the extension cable 12 is connected to the first insertion member 120 of one of the connectors 11, and the other end of the extension cable 12 is connected to the second insertion member 220 of the other connector 11. In this way, the problem that the two connectors 11 cannot be connected due to the too large distance can be solved, thereby improving the adaptability of the cable assembly 10 to the conventional installation environment and the complex installation environment.

[0062] In some embodiments, the extension cable 12 is connected to the connector 11 at the outermost end. For example, a rubber plug may be provided for the second insertion member 220 of one of the connectors 11 at the outermost end (e.g., the rightmost end) for sealing protection to achieve an IP68 rating. An extension cable 12 may be connected between the first insertion member 120 of the other connector 11 at the outermost end (e.g., the leftmost end) and the busbar box 30.

[0063] Referring to Figure 2 and Figure 3 , the present application further provides a photovoltaic system 40, which includes the above-mentioned cable assembly 10, an inverter 20, and a busbar box 30. Obviously, the third connection components 400 of different connectors 11 in the cable assembly 10 are connected to different inverters 20. The direct current generated by photovoltaic power generation is converted into alternating current by the inverter 20, and the alternating current can be connected to the power grid through the cable assembly 10. The busbar box 30 is connected to the connector 11 at the outermost end of the cable assembly 10, that is, the busbar box 30 is connected to the first insertion member 120 of the outermost connector 11, so as to realize the diversification of the functions of the photovoltaic system 40.

[0064] Referring to Figure 2 and Figure 3 , in some embodiments, the inverter 20 includes a fourth insertion member 21. The inverter 20 cooperates with the third insertion member 420 in the connector 11 through the fourth insertion member 21, so as to realize the connection relationship between the inverter 20 and the connector 11. The fourth insertion member 21 has the same structure as the first insertion member 120. During the manufacturing process of the entire photovoltaic system 40, the first insertion member 120 and the fourth insertion member 21 can be formed by using the same mold, so as to reduce the design and manufacturing costs of mold development, thereby reducing the manufacturing cost of the photovoltaic system 40.

[0065] Referring to Figure 5 , in some embodiments, the photovoltaic system 40 may further include a mounting rail 41. The mounting rail 41 can extend linearly, and the cable assembly 10 is fixed on the mounting rail 41. The extending direction of the first connecting line 110 is the same as the extending direction of the mounting rail 41. In this way, the first connecting line 110 between two adjacent connectors 11 can be prevented from being wound and interfered, which is simple and beautiful, and is convenient for the orderly installation of the photovoltaic system 40, improving the assembly efficiency of the photovoltaic system 40. The inverter 20 is fixedly connected to the mounting rail 41, so that the mounting rail 41 can be used as a carrier for the inverter 20 to ensure the stability and reliability of the installation of the inverter 20. The photovoltaic module 50 can be fixed on the mounting rail 41. The length of the third connecting line 410 can be from 0.1 m to 0.5 m. For example, the length of the third connecting line 410 can be 0.1 m, 0.2 m, 0.3 m, or 0.5 m, etc., to ensure the cooperative connection between the inverter 20 and the photovoltaic module 50.

[0066] In some embodiments, the inverter 20 is a micro-inverter, which can provide maximum power point control for the photovoltaic module 50, so that the alternating current energy output by the micro-inverter is maximized, thereby improving the conversion and transmission efficiency of the photovoltaic system 40 for energy. Moreover, different from the high-voltage direct current generated by the centralized inverter, the micro-inverter can generate low-voltage alternating current that can be directly connected to the power grid, thereby improving the safety of the photovoltaic system 40 and the conversion and transmission efficiency of energy.

[0067] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0068] The above-described embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A connector, characterized in that, it includes: a connection body; a first connection component, including a first connection line and a first insertion member, the first connection line is connected to the connection body and is located on one side of the connection body, and the first insertion member is connected to one end of the first connection line away from the connection body; and a second connection component, including a second insertion member, the second insertion member is located on the other side of the connection body, and one of the first insertion member and the second insertion member is a male head and the other is a female seat that can be adapted to the male head; it further includes a third connection component, the third connection component includes a third connection line connected to the middle of the connection body, and the third connection component is used to cooperate with an inverter; the connection body includes a wire bundling part, the first connection line and the third connection line are inserted into different wire bundling parts, the wire bundling part is provided with a connecting hole and a hollow hole that communicate with each other, the inner wall of the connecting hole is in a tapered shape that converges inward, and the first connection line and the third connection line cooperate with different connecting holes; the first and / or second insertion member includes a first layer and a second layer, the hardness of the first layer is greater than that of the second layer, the first layer covers at least part of the second layer, and the first connection line is inserted into the first layer.

2. The connector according to claim 1, characterized in that, the second insertion member is directly connected to the end of the connection body.

3. The connector according to claim 1, characterized in that, the third connection component further includes a third insertion member, the third insertion member is connected to one end of the third connection line away from the connection body, and the third insertion member is used to cooperate with an inverter.

4. The connector according to claim 3, characterized in that, both the first connection line and the third connection line include a neutral line and a live wire or two live wires, or both the first connection line and the third connection line include a neutral line, a live wire and a ground wire, or both the first connection line and the third connection line include two live wires and a ground wire.

5. The connector according to claim 3, characterized in that, the length of the third connection line is from 0.1 m to 0.5 m.

6. The connector according to claim 5, characterized in that, the length of the third connection line is 0.5 m.

7. The connector according to claim 3, characterized in that, the connection body includes a wire bundling part, and the first connection line is inserted into the wire bundling part.

8. The connector according to claim 3, characterized in that, the first connection component and / or the third connection component includes a wire bundling part.

9. The connector according to claim 8, characterized in that, a plurality of hollow holes communicating with the connecting hole are provided on the outer surface of the wire bundling part.

10. The connector according to claim 3, characterized in that, the second insertion member and the third insertion member have the same structure.

11. The connector according to claim 1, characterized in that, the extending direction of the third connection component is set at an angle of 30° to 150° with the extending directions of the first connection component and the second connection component.

12. The connector according to claim 10, wherein, the extending direction of the third connection component is perpendicular to the extending directions of the first connection component and the second connection component.

13. The connector according to claim 1, wherein, the extending directions of both the first connection component and the second connection component are located on the same straight line.

14. The connector according to claim 1, wherein, the length of the first connecting wire is from 1 m to 5 m.

15. The connector according to claim 1, wherein, the first plug-in part is a female socket, and the second plug-in part is a male head.

16. The connector according to claim 1, wherein, the third connecting wire is in interference fit with the connection hole.

17. A cable assembly, wherein, it includes a plurality of connectors according to any one of claims 1 to 16, and the adjacent first plug-in part and the second plug-in part arranged adjacent to each other in two adjacent connectors are mutually matched.

18. The cable assembly according to claim 17, wherein, it further includes an extension cable, the extension cable is connected between the first plug-in part and the second plug-in part of two adjacent connectors, and the extension cable is connected to the connector at the outermost end.

19. A photovoltaic system, wherein, it includes an inverter, a busbar box, and a cable assembly according to any one of claims 17 to 18, the inverter is connected to the connector, and the busbar box is connected to the first plug-in part of the connector at the outermost end.

20. The photovoltaic system according to claim 19, wherein, the inverter includes a fourth plug-in part, the inverter is connected to the cable assembly through the fourth plug-in part, and the fourth plug-in part has the same structure as the first plug-in part.

21. The photovoltaic system according to claim 19, wherein, the inverter is a micro-inverter.

22. The photovoltaic system according to claim 19, wherein, it further includes a mounting rail, the inverter is fixedly connected to the mounting rail, at least a part of the cable assembly is fixed on the mounting rail, and the extending direction of the first connecting wire is the same as the extending direction of the mounting rail.

Images