Photovoltaic connector, photovoltaic assembly and photovoltaic system

Abstract

The application relates to the photovoltaic technical field, in particular to a photovoltaic connector, a photovoltaic assembly and a photovoltaic system. In the embodiment of the application, the photovoltaic connector comprises at least two joints, at least one of the two joints is configured as a target joint, and a first sealing element in the target joint is respectively screwed with a main body and a connecting piece. The overall safety and reliability can be improved by setting a first protrusion and a first recess and / or a second protrusion and a second recess. In addition, since the first protrusion, the first recess, the second protrusion and the second recess are all arranged on corresponding thread structures, the photovoltaic connector is convenient to manufacture.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to photovoltaic connectors, photovoltaic modules and photovoltaic systems. Background Technology

[0002] Connectors are crucial components for power transmission between different devices. In solar power generation, power transmission between photovoltaic (PV) modules primarily relies on plug-in connectors. However, PV modules face numerous challenges due to their constant outdoor exposure. Strong winds or ocean waves exert continuous forces on the connectors, subjecting the internal sealing components to significant external forces. Under these forces, the sealing components are prone to deformation, displacement, or even damage, leading to sealing failure. This allows rainwater, moisture, and dust to enter the connector, impacting the safety and reliability of the entire PV system. Summary of the Invention

[0003] Therefore, it is necessary to provide a photovoltaic connector, photovoltaic module, and photovoltaic system to improve the sealing performance of the photovoltaic connector, thereby improving the overall safety and reliability.

[0004] According to one aspect of this application, an embodiment of this application provides a photovoltaic connector, including two connectors, at least one of which is a target connector; the target connector includes a body, a connector, and a first seal. One end of the body is plugged into the other connector, and the other end of the body and one of the connectors are provided with a first internal thread, and the other end of the body and the other of the connectors are provided with a first external thread; the first seal has a through channel, the inner circumferential surface of the through channel is provided with a second internal thread, and the outer circumferential surface of the through channel is provided with a second external thread; the second internal thread and the first external thread mate, and the second external thread and the first internal thread mate, so that the first seal is threadedly connected to the body and the connector respectively; the interior of the body, the interior of the connector, and the through channel together define a through channel for threading cables. In this configuration, one of the second internal thread and the first external thread is provided with a first protrusion, and the other of the second internal thread and the first external thread is provided with a first recess, the first protrusion and the first recess engaging with each other; and / or, one of the second external thread and the first internal thread is provided with a second protrusion, and the other of the second external thread and the first internal thread is provided with a second recess, the second protrusion and the second recess engaging with each other.

[0005] In some embodiments, the second internal thread is provided with a first protrusion, and the first external thread is provided with a first recess; wherein the first protrusion is provided at the crest of the second internal thread, and the first recess is provided at the root of the first external thread.

[0006] In some embodiments, the second external thread has a second recess, and the first internal thread has a second protrusion; wherein the second recess is located at the crest of the second external thread, and the second protrusion is located at the root of the first internal thread.

[0007] In some embodiments, when a first protrusion is provided on the second internal thread and a first recess is provided on the first external thread, a second protrusion is provided on the first internal thread and a second recess is provided on the second external thread. The second recess is provided corresponding to the first protrusion, and the first protrusion is formed by the second recess.

[0008] In some embodiments, when a first recess is provided on the second internal thread and a first protrusion is provided on the first external thread, a second recess is provided on the first internal thread and a second protrusion is provided on the second external thread. The first recess and the second protrusion are correspondingly provided, and the second protrusion is formed by the recess of the first recess.

[0009] In some embodiments, the direction of rotation of the second internal thread is opposite to that of the second external thread.

[0010] In some embodiments, the overlapping projections of the body and the first seal on the reference plane, and the overlapping projections of the connector and the first seal on the reference plane, at least partially overlap; the reference plane is parallel to the axial direction of the through channel.

[0011] In some embodiments, the target connector further includes a water-blocking component disposed within the through-channel; the water-blocking component includes a substrate and a plurality of water-blocking particles, the substrate having a receiving cavity that is disposed through and communicates with the through-channel, the receiving cavity being used for cable through-passage, and the plurality of water-blocking particles being disposed within the receiving cavity.

[0012] In some embodiments, the substrate is connected to the downstream side of the first seal in a direction from the inside of the self-penetrating channel toward the outside of the side where the connector is located.

[0013] In some embodiments, the substrate and the first seal are integrally formed structures.

[0014] In some embodiments, the substrate has an opening on the side opposite to the first seal, and the opening communicates with the receiving cavity.

[0015] In some embodiments, the connector is configured as a nut; in a direction from the inside of the self-penetrating channel to the outside of the side where the connector is located, the connector is provided with a threaded section and a mating section in sequence; the threaded section is provided with a first internal thread, and the other end of the main body is provided with a first external thread; the mating section is used to accommodate at least a portion of the base.

[0016] In some embodiments, the target connector further includes a second seal; the second seal is disposed within the through-channel and is located between the end wall of the connector and the base.

[0017] In some embodiments, the water-blocking particles are made of silicone, alumina, polyacrylamide, or polyvinyl alcohol.

[0018] In some embodiments, the cross-sectional area of ​​the receiving cavity gradually decreases or gradually increases in the direction from the inside of the self-penetrating channel to the outside of the side where the connector is located; the cross-section of the receiving cavity is perpendicular to the direction from the inside of the self-penetrating channel to the outside of the side where the connector is located.

[0019] In some embodiments, the two connectors are a first connector and a second connector; the first connector includes a first connector body and a plurality of snap-fit ​​portions disposed at one end of the first connector body, and the second connector includes a second connector body, one end of the second connector body is provided with a plurality of snap holes, and the plurality of snap-fit ​​portions and the plurality of snap holes are engaged in a one-to-one snap-fit ​​engagement; when the first connector is the target connector, the first connector body is the main body; when the second connector is the target connector, the second connector body is the main body; wherein, the photovoltaic connector further includes a third sealing member, the third sealing member is engaged with the plurality of snap-fit ​​portions in a preset manner, so as to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected; the preset manner includes the third sealing member being sleeved outside the plurality of snap-fit ​​portions, or the third sealing member being inserted into the plurality of snap-fit ​​portions.

[0020] In some embodiments, the third seal is elastic; when the first connector body and the second connector body are connected, the third seal is in a stretched state.

[0021] In some embodiments, the photovoltaic connector further includes a fourth seal, which is disposed at one end of the second connector body to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected; the fourth seal is elastic and has through holes that correspond to and cooperate with a plurality of snap-fit ​​portions; when the first connector body and the second connector body are connected, the fourth seal is in a stretched state.

[0022] In some embodiments, the first connector further includes a plug portion disposed at one end of the first connector body, the plug portion and a plurality of snap-fit ​​portions being located at the same end of the first connector body, and the plurality of snap-fit ​​portions being arranged around the plug portion; one end of the second connector body is also provided with a socket, the socket and a plurality of snap-fit ​​holes being located at the same end of the second connector body, and the plurality of snap-fit ​​holes being arranged around the socket, the socket and the plug portion being plugged in and engaged; wherein, the photovoltaic connector further includes a fifth sealing member, the fifth sealing member being sleeved on the plug portion to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected.

[0023] According to another aspect of this application, an embodiment of this application provides a photovoltaic module, including a photovoltaic cell module and a photovoltaic junction box mounted on the photovoltaic cell module, wherein the photovoltaic junction box includes the photovoltaic connector in any of the above embodiments.

[0024] According to another aspect of this application, embodiments of this application provide a photovoltaic system including the photovoltaic connector in any of the above embodiments; or, including the photovoltaic module in any of the above embodiments.

[0025] In the aforementioned photovoltaic connectors, photovoltaic modules, and photovoltaic systems, the photovoltaic connector includes at least two joints. By configuring at least one of the two joints as the target joint, the first sealing element in the target joint is threadedly connected to the body and the connector, respectively. A locking structure is formed by providing a first protrusion and a first recess, utilizing the snap-fitting first protrusion and first recess. When the first external thread and the second internal thread are subjected to vibration, impact, or axial force, the physical limiting of the first protrusion and first recess directly prevents the relative rotation of the first external thread and the second internal thread, thereby making the fit between the first external thread and the second internal thread tighter, and thus improving connection reliability and sealing reliability. Similarly, a locking structure is formed by providing a second protrusion and a second recess, utilizing the snap-fitting second protrusion and second recess. When the second external thread and the first internal thread are subjected to vibration, impact, or axial force, the physical limiting of the second protrusion and second recess directly prevents the relative rotation of the second external thread and the first internal thread, thereby making the fit between the second external thread and the first internal thread tighter, and thus improving connection reliability and sealing reliability. When both the "first protrusion and first recess" and the "second protrusion and second recess" form a snap-fit ​​structure, if there is a tendency for loosening between the second internal thread and the first external thread, or between the second external thread and the first internal thread, these two snap-fit ​​structures can interact to jointly improve the tightness and stability of the connection between the first seal, the body, and the connector. Therefore, by providing the "first protrusion and first recess" and / or the "second protrusion and second recess," the overall safety and reliability can be improved. Furthermore, since the first protrusion, first recess, second protrusion, and second recess are all located on corresponding thread structures, manufacturing is also convenient.

[0026] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the photovoltaic connector in some embodiments of this application;

[0029] Figure 2 This is a partially exploded structural diagram of the photovoltaic connector in some embodiments of this application;

[0030] Figure 3 This is a partial structural schematic diagram of the first connector in some embodiments of this application;

[0031] Figure 4 This is a partial structural schematic diagram of the second connector in some embodiments of this application;

[0032] Figure 5 This is a partial cross-sectional view of the connector in some embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the first seal in some embodiments of this application;

[0034] Figure 7 This is a cross-sectional structural schematic diagram of the first seal in some embodiments of this application;

[0035] Figure 8 This is a cross-sectional structural diagram of the partial structure of the main body, connector and first seal in some embodiments of this application;

[0036] Figure 9 This is a schematic diagram showing the projected relationship between the main body, the connector, and the first seal in some embodiments of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the photovoltaic connector in some other embodiments of this application;

[0038] Figure 11 This is a partially exploded structural diagram of the photovoltaic connector in some other embodiments of this application;

[0039] Figure 12 This is a partial cross-sectional view of the photovoltaic connector in some other embodiments of this application;

[0040] Figure 13 This is a cross-sectional structural diagram of the partial structure in which the main body, connector, first seal and water-blocking component cooperate in some other embodiments of this application;

[0041] Figure 14 This is a cross-sectional structural diagram showing the cooperation between the first sealing element and the water-blocking component in some other embodiments of this application;

[0042] Figure 15This is a cross-sectional structural diagram showing the cooperation between the first sealing element and the water-blocking component in some embodiments of this application;

[0043] Figure 16 This is a schematic diagram showing the structure of a photovoltaic connector in other embodiments of this application where the first and second connectors are not connected.

[0044] Figure 17 for Figure 12 A magnified schematic diagram of the local structure at point G;

[0045] Figure 18 This is a schematic diagram of the structure of the third seal in some embodiments of this application;

[0046] Figure 19 This is a schematic diagram of the structure of the fourth seal in some embodiments of this application;

[0047] Figure 20 This is a partially enlarged cross-sectional view of the insertion and mating point of the first and second connectors in some embodiments of this application;

[0048] Figure 21 This is a schematic diagram of the structure of a photovoltaic module in some embodiments of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] Photovoltaic module 10, photovoltaic cell module 11, photovoltaic junction box 12;

[0051] Photovoltaic connectors 100a and 100b;

[0052] First connectors 110a, 110c, first connector body 111a, snap-fit ​​part 116a, insertion part 117a, insert sleeve 118a, second connectors 110b, 110d, second connector body 111b, snap hole k2, insertion hole k5, insertion pin 118b, target connectors J1, J2, body 111, connectors 112a, 112b, threaded section 1121, mating section 1122, end wall 1123, first seal 113, through channel 1131, water-blocking components 114a, 114b, base 1141a, 1141b, receiving cavity Q, opening k1, water-blocking particle 1142, second seal 115;

[0053] Third seal 120, socket k3;

[0054] Fourth seal 130, through hole k4;

[0055] Fifth seals 140a and 140b;

[0056] First internal thread 1101, first external thread 1102, second internal thread 1132, second external thread 1133, first convex part 1103, first concave part 1104, second convex part 1105, second concave part 1106;

[0057] Cable 200;

[0058] Reference plane E, first projection y1, second projection y2. Detailed Implementation

[0059] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0060] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 this application.

[0061] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening 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 intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0065] According to some embodiments of this application, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the photovoltaic connector 100a in some embodiments of this application. Figure 2 This is a partially exploded structural diagram of a photovoltaic connector 100a in some embodiments of this application. The embodiments of this application provide a photovoltaic connector 100a, which includes two connectors, at least one of which is a target connector J1.

[0066] The two connectors are designated as first connector 110a and second connector 110b. The two connectors are plugged into each other; that is, one connector is male and the other is female. In the embodiments of this application, referring to reference... Figure 1 and Figure 2The first connector 110a is a male connector, and the second connector 110b is a female connector. The first connector 110a and / or the second connector 110b is the target connector J1. Figure 1 and Figure 2 For example, the case where both the first connector 110a and the second connector 110b are target connectors J1 is illustrated.

[0067] Combined with reference Figures 3 to 8 , Figure 3 This is a partial structural schematic diagram of the first connector 110a in some embodiments of this application. Figure 4 This is a partial structural schematic diagram of the second connector 110b in some embodiments of this application. Figure 5 This is a partial cross-sectional view of the connector 112a in some embodiments of this application. Figure 6 This is a schematic diagram of the structure of the first seal 113 in some embodiments of this application. Figure 7 This is a cross-sectional view of the first seal 113 in some embodiments of this application. Figure 8 This is a cross-sectional view of the partial structure of the body 111, connector 112a, and first seal 113 in some embodiments of this application. The target connector J1 includes a body 111, connector 112a, and first seal 113. One end of the body 111 is inserted into another connector. One of the other ends of the body 111 and connector 112a is provided with a first internal thread 1101, and the other end of the body 111 and connector 112a is provided with a first external thread 1102. The other connector is the connector other than the one containing the body 111. The first seal 113 is provided with a through channel 1131. The inner circumferential surface of the through channel 1131 is provided with a second internal thread 1132, and the outer circumferential surface of the through channel 1131 is provided with a second external thread 1133. The second internal thread 1132 mates with the first external thread 1102, and the second external thread 1133 mates with the first internal thread 1101, so that the first seal 113 is threadedly connected to the body 111 and the connector 112a respectively.

[0068] For example, in conjunction with reference Figure 3 and Figure 4The first connector 110a includes a first connector body 111a, and the second connector 110b includes a second connector body 111b. When the first connector 110a is the target connector J1, the first connector body 111a is the main body 111. When the second connector 110b is the target connector J1, the second connector 110b is the main body 111. It should be noted that when both the first connector 110a and the second connector 110b are target connectors J1, it means that the structures of the first connector 110a and the second connector 110b are the same except for the structure of the insertion connection. That is, the structures of the insertion end of the first connector body 111a and the second connector body 111b are different, but the "method of cooperation between the first connector body 111a and the connector 112a and the first seal 113" is the same as the "method of cooperation between the second connector body 111b and the connector 112a and the first seal 113".

[0069] For example, with Figure 3 and Figure 4 For example, the first connector body 111a and the second connector body 111b are respectively provided with a first external thread 1102. Figure 5 For example, the connector 112a is provided with a first internal thread 1101. Of course, the first connector body 111a and the second connector body 111b may also be provided with the first internal thread 1101, and the connector 112a may be provided with the first external thread 1102. No specific restrictions are made here.

[0070] Continue to refer to Figure 8 and in conjunction with reference Figure 9 , Figure 9 This is a schematic diagram showing the projected relationship of the main body 111, connector 112a, and first seal 113 in some embodiments of this application. The overlapping projections of the main body 111 and the first seal 113 on reference plane E, and the overlapping projections of the connector 112a and the first seal 113 on reference plane E, are at least partially overlapping. Reference plane E is parallel to the axial direction of the through channel 1131. The interior of the main body 111, the interior of the connector 112a, and the through channel 1131 together define a through channel for threading the cable 200. Figure 2 In the diagram, cable 200 is shown as a dashed line to illustrate the fit between cable 200 and photovoltaic connector 100a. Cable 200 will also be shown as a dashed line in the subsequent diagrams illustrating the related structures of the photovoltaic connector, and will not be described again.

[0071] For example, with Figure 8 and Figure 9For example, the overlapping projections of the main body 111 and the first seal 113 on the reference plane E are the first projection y1, and the overlapping projections of the connector 112a and the first seal 113 on the reference plane E are the second projection y2. The first projection y1 and the second projection y2 completely overlap. That is, in conjunction with the reference... Figure 5 and Figure 8 When the connector 112a has a first internal thread 1101, the first seal 113 is located inside the connector 112a, and the part of the main body 111 that connects to the first seal 113 is also located inside the connector 112a. The first internal thread 1101 on the main body 111 can be understood by analogy and will not be elaborated upon here.

[0072] Therefore, by configuring at least one of the two joints as the target joint J1, the first seal 113 in the target joint J1 is threadedly connected to the main body 111 and the connector 112a respectively. Since the overlapping projections of the main body 111 and the first seal 113 on the reference plane E, and the overlapping projections of the connector 112a and the first seal 113 on the reference plane E, are at least partially overlapping, at least a portion of the first seal 113 can be considered as being sandwiched between the main body 111 and the connector 112a. In this structure, the interface formed between the first seal 113 and the main body 111, and the interface formed between the first seal 113 and the connector 112a, constitute multiple seals, thereby improving the sealing performance at the connection between the main body 111 and the connector 112a. Since the main body 111 and the connector 112a are connected by threads with the help of the first seal 113, in scenarios such as vibration or impact, the friction or elastic deformation of the mating surfaces between the first seal 113 and the main body 111, and between the first seal 113 and the connector 112a, can be used for buffering, forming a graded and distributed load, thereby reducing the risk of failure under complex working conditions such as dynamic load and temperature fluctuation, and further improving the sealing performance of the connection between the main body 111 and the connector 112a.

[0073] Based on some embodiments of this application, please continue to refer to Figures 2 to 4 , Figure 6 and Figure 7 One of the second internal thread 1132 and the first external thread 1102 is provided with a first protrusion 1103, and the other of the second internal thread 1132 and the first external thread 1102 is provided with a first recess 1104. The first protrusion 1103 and the first recess 1104 are engaged.

[0074] For example, with Figure 7 For example, the case where the second internal thread 1132 has a first protrusion 1103 is illustrated. Figure 3 and Figure 4For example, the first external thread 1102 is provided with a first recess 1104.

[0075] The first protrusion 1103 and the first recess 1104 can each be one, two, four, or other quantities, without specific limitations. When multiple first protrusions 1103 and first recesses 1104 are provided, all first protrusions 1103 can be arranged axially spaced along the corresponding thread structure, or all first protrusions 1103 can be arranged circumferentially spaced around the corresponding thread structure, or all first protrusions 1103 can be distributed spaced on the corresponding thread structure, with the first recesses 1104 fitting in conjunction with the first protrusions 1103, without specific limitations.

[0076] Thus, by providing the first protrusion 1103 and the first recess 1104, a locking structure is formed through the snap-fit ​​engagement of the first protrusion 1103 and the first recess 1104. When the first external thread 1102 and the second internal thread 1132 are subjected to vibration, impact, or axial force, the physical restraint of the first protrusion 1103 and the first recess 1104 directly prevents relative rotation of the first external thread 1102 and the second internal thread 1132, thereby making the fit between the first external thread 1102 and the second internal thread 1132 tighter, and thus improving the connection reliability and sealing reliability. In addition, since the first protrusion 1103 and the first recess 1104 are both provided on the corresponding thread structure, they are also easy to manufacture.

[0077] Based on some embodiments of this application, please continue to refer to Figures 2 to 4 , Figure 6 and Figure 7 The second internal thread 1132 is provided with a first protrusion 1103, and the first external thread 1102 is provided with a first recess 1104. The first protrusion 1103 is provided at the crest of the second internal thread 1132, and the first recess 1104 is provided at the root of the first external thread 1102.

[0078] The crest of a thread is the top of the raised portion in the thread profile. The root of a thread is the bottom of the recessed portion between two adjacent crests in the thread profile.

[0079] The crest of the second internal thread 1132 and the root of the first external thread 1102 are among the main force-bearing contact surfaces. Under axial load, the force is transmitted through the tooth surfaces. By placing the first protrusion 1103 at the crest of the second internal thread 1132 and the first recess 1104 at the root of the first external thread 1102, the locking structure formed by the first protrusion 1103 and the first recess 1104 directly acts on the force-concentrated area. When the thread tends to loosen, this locking structure can directly block relative rotation from the force transmission path, providing more timely intervention. Compared to placing the first protrusion 1103 and the first recess 1104 on the inclined surfaces of the corresponding thread structures, this arrangement further maintains the complete contact area of ​​the inclined surfaces, thereby improving the thread's load-bearing capacity. Therefore, by setting the positions of the first protrusion 1103 and the first recess 1104, more precise locking and more stable anti-loosening can be achieved while considering thread strength and ease of machining.

[0080] Based on some embodiments of this application, please continue to refer to Figure 2 , Figures 5 to 7 A second protrusion 1105 is provided on one of the second external thread 1133 and the first internal thread 1101, and a second recess 1106 is provided on the other of the two threads. The second protrusion 1105 and the second recess 1106 are engaged.

[0081] The relevant embodiments of the second protrusion 1105 and the second recess 1106 can be understood by referring to the relevant embodiments of the first protrusion 1103 and the first recess 1104 shown above, and will not be described in detail here.

[0082] Thus, by providing the second protrusion 1105 and the second recess 1106, a locking structure is formed through the snap-fit ​​engagement of the second protrusion 1105 and the second recess 1106. When the second external thread 1133 and the first internal thread 1101 are subjected to vibration, impact, or axial force, the physical restraint of the second protrusion 1105 and the second recess 1106 directly prevents relative rotation between the second external thread 1133 and the first internal thread 1101, thereby making the fit between the second external thread 1133 and the first internal thread 1101 tighter, and thus improving the connection reliability and sealing reliability. In addition, since the second protrusion 1105 and the second recess 1106 are both provided on the corresponding thread structure, they are also easy to manufacture.

[0083] Based on some embodiments of this application, please continue to refer to Figure 2 , Figures 5 to 7The second external thread 1133 is provided with a second recess 1106, and the first internal thread 1101 is provided with a second protrusion 1105. The second recess 1106 is provided at the crest of the second external thread 1133, and the second protrusion 1105 is provided at the root of the first internal thread 1101.

[0084] The relevant embodiments of the second protrusion 1105 and the second recess 1106 can be understood by referring to the relevant embodiments of the first protrusion 1103 and the first recess 1104 shown above, and will not be described in detail here.

[0085] The second recess 1106 is located at the crest of the second external thread 1133, and the second protrusion 1105 is located at the root of the first internal thread 1101. This interlocking structure, formed by the engagement of the second protrusion 1105 and the second recess 1106, directly acts on the area of ​​concentrated stress. When the thread tends to loosen, this interlocking structure can directly block relative rotation along the force transmission path, providing more timely intervention. Compared to placing the second protrusion 1105 and the second recess 1106 on the inclined surfaces of the corresponding thread structures, this arrangement further maintains the complete contact area of ​​the inclined surfaces, thereby improving the thread's load-bearing capacity. Therefore, by strategically positioning the second protrusion 1105 and the second recess 1106, more precise locking and more stable anti-loosening can be achieved while maintaining thread strength and ease of machining.

[0086] Based on some embodiments of this application, please continue to refer to Figures 2 to 7 One of the second internal thread 1132 and the first external thread 1102 is provided with a first protrusion 1103, and the other of the second internal thread 1132 and the first external thread 1102 is provided with a first recess 1104. The first protrusion 1103 and the first recess 1104 are engaged. One of the second external thread 1133 and the first internal thread 1101 is provided with a second protrusion 1105, and the other of the second external thread 1133 and the first internal thread 1101 is provided with a second recess 1106. The second protrusion 1105 and the second recess 1106 are engaged.

[0087] By providing corresponding mating recesses and protrusions on the interface formed between the first seal 113 and the main body 111, and on the interface formed between the first seal 113 and the connector 112a, a multi-layer anti-retraction structure is formed. Since at least a portion of the first seal 113 can be considered as being sandwiched between the main body 111 and the connector 112a, in conjunction with reference to... Figure 8Through the matching of the corresponding threaded structures, the first seal 113, the main body 111, and the connector 112a are roughly integrated into a whole. When there is a tendency for loosening between the second internal thread 1132 and the first external thread 1102 or between the second external thread 1133 and the first internal thread 1101, the snap-fit ​​structure formed by the "first protrusion 1103 and the first concave portion 1104" and the snap-fit ​​structure formed by the "second protrusion 1105 and the second concave portion 1106" can interact to jointly improve the tightness and stability of the connection between the first seal 113, the main body 111, and the connector 112a.

[0088] Based on some embodiments of this application, please continue to refer to Figures 2 to 7 When a first protrusion 1103 is provided on the second internal thread 1132 and a first recess 1104 is provided on the first external thread 1102, a second protrusion 1105 is provided on the first internal thread 1101 and a second recess 1106 is provided on the second external thread 1133. The second recess 1106 is correspondingly provided with the first protrusion 1103, and the first protrusion 1103 is formed by the recess of the second recess 1106. Alternatively, when a first recess 1104 is provided on the second internal thread 1132 and a first protrusion 1103 is provided on the first external thread 1102, a second recess 1106 is provided on the first internal thread 1101 and a second protrusion 1105 is provided on the second external thread 1133. The first recess 1104 is correspondingly provided with the second protrusion 1105, and the second protrusion 1105 is formed by the recess of the first recess 1104.

[0089] For example, with Figures 2 to 7 For example, the first internal thread 1101 is provided with a second protrusion 1105, the first external thread 1102 is provided with a first concave portion 1104, the second internal thread 1132 is provided with a first protrusion 1103, and the second external thread 1133 is provided with a second concave portion 1106. The first protrusion 1103 is formed by the second concave portion 1106.

[0090] Since the first protrusion 1103 is formed by the recess of the second concave portion 1106, or the second protrusion 1105 is formed by the recess of the first concave portion 1104, the inner and outer walls of the first sealing member 113 form a complementary structure. When any of the three components—the first sealing member 113, the main body 111, and the connector 112a—is subjected to force, the concave and convex structures on the inner and outer walls of the first sealing member 113 form a mutually supporting structure. This improves the overall deformation resistance of the first sealing member 113, the main body 111, and the connector 112a, thereby further enhancing the stability, sealing, and reliability of the overall structure. Simultaneously, forming protrusions through corresponding recesses reduces assembly complexity and facilitates installation. Furthermore, the method of setting corresponding concave and convex portions to fit the tooth root and tooth crest, as illustrated in the aforementioned embodiments, further enhances the stability, sealing, and reliability of the overall structure.

[0091] Based on some embodiments of this application, please continue to refer to Figures 2 to 8 The direction of rotation of the second internal thread 1132 is opposite to that of the second external thread 1133.

[0092] For example, the second internal thread 1132 is right-handed and the second external thread 1133 is left-handed; or, the second internal thread 1132 is left-handed and the second external thread 1133 is right-handed. The first external thread 1102 has the same direction of rotation as the second internal thread 1132, and the first internal thread 1101 has the same direction of rotation as the second external thread 1133.

[0093] Combined with reference Figures 2 to 8 Taking the second internal thread 1132 as left-handed and the second external thread 1133 as right-handed as an example, when the connector 112a has a tendency to loosen in the right direction, the first seal 113 will be subjected to a clockwise torque. However, since the second internal thread 1132 of the first seal 113 is left-handed, it will generate a counterclockwise torque on the main body 111. The clockwise and counterclockwise torques are in opposite directions and can cancel each other out part of the loosening force, thereby reducing the risk of overall loosening. Thus, by making the rotation direction of the second internal thread 1132 opposite to that of the second external thread 1133, a reverse constraint can be formed when there is a tendency to loosen. Combined with the locking structure formed by the corresponding convex and concave parts mentioned above, the opposite rotation direction of the threads constrains the loosening, and the physical clamping of the corresponding concave and convex parts forms a structure that improves the reliability of the connection in multiple ways. Even when the photovoltaic connector 100a is in a complex stress environment, it can still help improve the sealing performance, reliability, and stability of the photovoltaic connector 100a.

[0094] According to some embodiments of this application, please refer to Figures 10 to 13 , Figure 10 This is a schematic diagram of the structure of the photovoltaic connector 100b in some other embodiments of this application. Figure 11 This is a partially exploded structural diagram of the photovoltaic connector 100b in some other embodiments of this application. Figure 12 This is a partial cross-sectional view of the photovoltaic connector 100b in some other embodiments of this application. Figure 13 This is a cross-sectional view of the partial structure of the main body 111, connector 112b, first seal 113, and water-blocking component 114a in some other embodiments of this application. The target connector J2 also includes a water-blocking component 114a disposed within the through-channel. The water-blocking component 114a includes a base 1141a and a plurality of water-blocking particles 1142. The base 1141a has a receiving cavity Q that is through-connected and communicates with the through-channel. The receiving cavity Q is used for the cable 200 to pass through, and the plurality of water-blocking particles 1142 are disposed within the receiving cavity Q.

[0095] For example, with Figure 10 For example, the case where both the first connector 110c and the second connector 110d are target connector J2 is illustrated. The target connector J2 also has the structure that target connector J1 has, and will not be described in detail here.

[0096] Water-blocking particles 1142 are used to prevent moisture and humidity from entering the interior of the cable 200, thereby protecting the cable 200. The water-blocking particles 1142 are arranged in a granular form.

[0097] As the cable 200 passes through the receiving cavity Q, water-blocking particles 1142 fill the area around the portion of the cable 200 located within the receiving cavity Q, and the gaps between the water-blocking particles 1142 form a curved path. When moisture seeps into the receiving cavity Q, it can not only be absorbed by the water-blocking particles 1142, but the curved path also restricts further longitudinal penetration of moisture along the cable 200. When the photovoltaic connector is subjected to external forces, the gaps between the water-blocking particles 1142 act as a buffer space. The slight displacement and stacking of the water-blocking particles 1142 adjusts and disperses stress, which not only improves the overall structural stability but also allows the water-blocking particles 1142 to change shape with the cable 200, thus maintaining contact with the cable 200 and further protecting it.

[0098] Based on some embodiments of this application, please continue to refer to Figures 11 to 13 In the direction from the inside of the self-piercing channel to the outside of the side where the connector 112b is located, the base 1141a is connected to the downstream side of the first seal 113.

[0099] Thus, the water-blocking component 114a is located downstream of the first seal 113, thereby blocking water from the downstream side of the first seal 113 and reducing the risk of moisture intrusion from the downstream side of the first seal 113. This further improves the reliability and sealing of the connection between the first seal 113, the connector 112b, and the main body 111. Furthermore, when the first seal 113, the connector 112b, and the main body 111 are connected, the water-blocking component 114a can be squeezed to allow it to fit more tightly between the connector 112b and the first seal 113, thereby further enhancing the water-blocking capability.

[0100] Based on some embodiments of this application, please continue to refer to Figures 11 to 13 and in conjunction with reference Figure 14 , Figure 14 This is a cross-sectional view of the first sealing element 113 and the water-blocking component 114a in some other embodiments of this application. The base 1141a and the first sealing element 113 are integrally formed.

[0101] Because the substrate 1141a and the first sealing element 113 are integrally molded, there is no physical interface between them. This structurally reduces gap problems caused by assembly errors, forming a continuous and complete sealing structure, thereby improving the sealing effect. Simultaneously, the integral molding of the substrate 1141a and the first sealing element 113 makes them a more unified whole in terms of mechanical properties, thus improving structural rigidity and resistance to deformation, and reducing the risk of failure due to phase separation between the substrate 1141a and the first sealing element 113. Furthermore, it simplifies the manufacturing process and improves manufacturing efficiency.

[0102] Based on some embodiments of this application, please continue to refer to Figures 11 to 14 The substrate 1141a has an opening k1 on the side opposite to the first seal 113, and the opening k1 is connected to the receiving cavity Q.

[0103] This not only facilitates the assembly of the cable 200, but also allows the side of the substrate 1141a away from the first seal 113 to directly abut against the connector 112b. Thus, the deformation of the substrate 1141a during assembly can be used to more tightly wrap the portion of the cable 200 located in the receiving cavity Q, thereby improving the water-blocking effect.

[0104] Based on some embodiments of this application, please continue to refer to Figures 11 to 14The connector 112b is configured as a nut. In the direction from the inside of the self-penetrating channel towards the outside of the side where the connector 112b is located, the connector 112b has a threaded section 1121 and a mating section 1122 in sequence. The threaded section 1121 has a first internal thread 1101, and the other end of the main body 111 has a first external thread 1102. The mating section 1122 is used to accommodate at least a portion of the base 1141a.

[0105] Thus, by providing a mating section 1122 within the connector 112b, it is not only beneficial for installing the water-blocking component 114a, but also beneficial for utilizing the mating section 1122 to accommodate the deformation of the base 1141a, thereby achieving a more tightly fitted structure and improving sealing and water-blocking performance.

[0106] Based on some embodiments of this application, please continue to refer to Figures 11 to 13 The target connector J2 also includes a second seal 115. The second seal 115 is disposed in the through-channel and is located between the end wall 1123 of the connector 112b and the base 1141a.

[0107] For example, the second seal 115 is an annular component.

[0108] Thus, by providing a second seal 115 between the end wall 1123 of the connector 112b and the substrate 1141a, the water-blocking performance is further improved. In addition, since the substrate 1141a can directly abut against the second seal 115, the sealing between the second seal 115 and the substrate can be improved by utilizing the deformation of the second seal 115 in conjunction with the substrate 1141a.

[0109] Of course, in the above-described Figure 1 and Figure 2 Alternatively, a second seal 115 can be provided, which is located between the first seal 113 and the end wall of the connector 112a.

[0110] Based on some embodiments of this application, please continue to refer to Figure 13 and Figure 14 The materials used for water-blocking particles 1142 include silicone, alumina, polyacrylamide, or polyvinyl alcohol.

[0111] Silicone has excellent weather resistance, stability, and elastic deformation capability. Therefore, while blocking water, the deformation of the silicone can tightly wrap around the cable 200 and improve the tightness of the fit between corresponding components, thereby enhancing the sealing performance.

[0112] Alumina possesses excellent strength, wear resistance, and stability. Therefore, it can both block water and enhance the overall structural strength and stability.

[0113] Polyacrylamide has high water absorption and swelling properties. Therefore, while blocking water, it can also improve the tightness between the water-blocking particles 1142 and the cable 200.

[0114] Polyvinyl alcohol has controllable water absorption and film-forming properties, and has the dual function of expanding and sealing and blocking water penetration.

[0115] Thus, the material of the water-blocking particles 1142 can be flexibly selected, without specific restrictions.

[0116] According to some embodiments of this application, please refer to Figure 15 , Figure 15 This is a cross-sectional view of the first sealing member 113 and the water-blocking member 114b in some embodiments of this application. In the direction from the inside of the self-penetrating channel towards the outside of the side where the connector 112b is located, the cross-sectional area of ​​the receiving cavity Q formed by the base 1141b gradually decreases or gradually increases. The cross-section of the receiving cavity Q is perpendicular to the direction from the inside of the self-penetrating channel towards the outside of the side where the connector 112b is located.

[0117] Thus, when the photovoltaic connector is subjected to external forces, the stress can be dispersed by the inner wall of the receiving cavity Q of the water-blocking component 114b, thereby further improving the structural reliability of the photovoltaic connector.

[0118] It should be noted that, in conjunction with reference Figure 13 In this structure, through the deformation of the second sealing element 115, the water-blocking particles 1142, and the substrate 1141a, the cooperation of the first sealing element 113 with the main body 111 and the connector 112b, and the cooperation of the corresponding concave and convex parts shown in some of the aforementioned embodiments, not only is a multi-layer water-blocking structure formed and the water-blocking path extended, but also the overall structural stability is improved through the cooperation of each component, so that the photovoltaic connector can still have better sealing performance when subjected to external forces.

[0119] Based on some embodiments of this application, please continue to refer to Figure 3 , Figure 4 and in conjunction with reference Figure 16 and Figure 17 , Figure 16 This is a schematic diagram showing the structure of the photovoltaic connector 100b in other embodiments of this application where the first connector 110c and the second connector 110d are not connected. Figure 17 for Figure 12The enlarged schematic diagram at point G shows two connectors: a first connector 110c and a second connector 110d. The first connector 110c includes a first connector body 111a and multiple latching portions 116a at one end of the first connector body 111a. The second connector 110d includes a second connector body 111b, with multiple locking holes k2 at one end. The latching portions 116a and locking holes k2 are engaged in a one-to-one latching action. When the first connector 110c is the target connector J2, the first connector body 111a is the main body 111. When the second connector 110d is the target connector J2, the second connector body 111b is the main body 111. The photovoltaic connector 100b also includes a third sealing element 120, which engages with the multiple latching portions 116a in a predetermined manner to seal between the first connector body 111a and the second connector body 111b when they are connected. The preset methods include the third sealing element 120 being sleeved on the outside of the multiple snap-fit ​​parts 116a, or the third sealing element 120 being inserted into and engaged with the multiple snap-fit ​​parts 116a.

[0120] For example, with Figure 16 and Figure 17 For example, the third seal 120 is inserted into and mates with multiple snap-fit ​​parts 116a. (Refer to reference...) Figure 18 , Figure 18 The diagram below shows the structure of the third sealing member 120 in some embodiments of this application. The third sealing member 120 is arranged in a ring shape and has a socket k3 on it that is inserted and engaged with a plurality of snap-fit ​​parts 116a.

[0121] In this way, the sealing performance at the connection between the first connector body 111a and the second connector body 111b can be improved.

[0122] Based on some embodiments of this application, please continue to refer to Figure 3 , Figure 4 , Figures 16 to 18 The third seal 120 is elastic. When the first connector body 111a and the second connector body 111b are connected, the third seal 120 is in a stretched state.

[0123] Because the snap-fit ​​part 116a has a certain elasticity, when the third seal 120 is engaged with the snap-fit ​​part 116a, the elasticity of the snap-fit ​​part 116a can be used to make the third seal 120 fit more tightly between the first connector body 111a and the second connector body 111b, thereby further improving the sealing performance at the connection between the first connector body 111a and the second connector body 111b.

[0124] Based on some embodiments of this application, please continue to refer to Figure 11 , Figure 17 and in conjunction with reference Figure 19 , Figure 19 The diagram below illustrates the structure of the fourth seal 130 in some embodiments of this application. The photovoltaic connector 100b further includes a fourth seal 130, which is disposed at one end of the second connector body 111b to seal between the first connector body 111a and the second connector body 111b when they are connected. The fourth seal 130 is elastic and has through holes k4 that correspond one-to-one with multiple snap-fit ​​portions 116a. When the first connector body 111a and the second connector body 111b are connected, the fourth seal 130 is in a stretched state.

[0125] Because the snap-fit ​​part 116a has a certain elasticity, when the fourth seal 130 is engaged with the snap-fit ​​part 116a, the elasticity of the snap-fit ​​part 116a can be used to make the fourth seal 130 fit more tightly between the first connector body 111a and the second connector body 111b, thereby further improving the sealing performance at the connection between the first connector body 111a and the second connector body 111b.

[0126] Therefore, by providing the third seal 120 and the fourth seal 130, a double sealing structure can be formed between the first connector body 111a and the second connector body 111b, further improving the sealing performance.

[0127] It should be noted that, in Figure 12 and Figure 17 In the illustrated scenario, to clearly show the relationship between the latching part 116a and the third seal 120 and the fourth seal 130, the third seal 120 and the fourth seal 130 are not shown in cross-section. (Referring to...) Figure 18 ,exist Figure 17 In the diagram, the socket k3 on the third seal 120 is indicated by a dashed line. (This will be shown later in the diagram.) Figure 20 In China, you can also refer to Figure 17 This is self-explanatory and will not be elaborated further.

[0128] Based on some embodiments of this application, please continue to refer to Figure 11 , Figure 12 , Figure 16 and Figure 17The first connector 110c further includes a plug-in portion 117a located at one end of the first connector body 111a. The plug-in portion 117a and a plurality of snap-fit ​​portions 116a are located at the same end of the first connector body 111a, and the plurality of snap-fit ​​portions 116a are arranged around the plug-in portion 117a. One end of the second connector body 111b is also provided with a socket k5. The socket k5 and a plurality of snap-fit ​​holes k2 are located at the same end of the second connector body 111b, and the plurality of snap-fit ​​holes k2 are arranged around the socket k5. The socket k5 and the plug-in portion 117a are plugged into each other. The photovoltaic connector 100b further includes a fifth sealing member 140a, which is sleeved on the plug-in portion 117a to seal between the first connector body 111a and the second connector body 111b when they are connected.

[0129] Thus, by providing the fifth sealing element 140a, the sealing performance at the socket k5 can be further improved. In addition, since multiple snap-fit ​​parts 116a are arranged around the insertion part 117a, and in combination with the third sealing element 120 and / or the fourth sealing element 130, a sealing structure is formed around the socket k5, thereby further improving the sealing performance at the connection between the first connector body 111a and the second connector body 111b.

[0130] It should be noted that, with Figure 17 For example, the fifth seal 140a can be located outside the socket k5. Of course, taking... Figure 20 For example, Figure 20 This is a partially enlarged cross-sectional view of the insertion and mating area of ​​the first connector 110c and the second connector 110b in some embodiments of this application. The fifth sealing element 140b may be located within the insertion hole k5, and no specific limitation is made here. Figure 17 and Figure 20 For clarity, the fifth seal is shown as a solid line and is not shown in cross-section. In the above... Figure 1 and Figure 2 The structures involved in the photovoltaic connector 100a, such as the snap-fit ​​part 116a, the plug-in part 117a, the third seal 120, and the fourth seal 130, can also be understood with reference to the above, and will not be described in detail here.

[0131] It is understood that the materials of the first connector body 111a and the second connector body 111b are usually hard plastic. By setting the third seal 120 and / or the fourth seal 130 and / or the fifth seal, the risk of water vapor seepage caused by the gap at the connection between the first connector body 111a and the second connector body 111b can be reduced.

[0132] Based on some embodiments of this application, please continue to refer to Figure 3 , Figure 4 and Figure 12The first connector body 111a has a sleeve 118a inside, and the second connector body 111b has a pin 118b inside. Figure 3 and Figure 4 The positions of the sleeve and pin 118b are indicated by dashed lines. When the first connector body 111a and the second connector body 111b are connected, the pin 118b is inserted into the sleeve 118a. The cable 200 at the first connector 110c is connected to the sleeve 118a, and the cable 200 at the second connector 110d is connected to the pin 118b. This provides an electrical connection between the cable 200 at the first connector 110c and the cable 200 at the second connector 110d.

[0133] It should be noted that, in the above illustration Figure 12 , Figure 17 and Figure 20 In order to better illustrate the mating relationship between the socket 118a and the pin 118b, the socket 118a and the pin 118b are shown in solid lines.

[0134] It should also be noted that the photovoltaic connectors illustrated in the above embodiments include, but are not limited to, those applicable to the offshore photovoltaic module 10. It is understood that under the influence of ocean waves, the offshore photovoltaic module 10 will sway with the waves, causing the components within the photovoltaic connector to be subjected to vibration forces. Using the photovoltaic connector provided in this application embodiment, the first seal 113, the corresponding concave and convex portions on the threaded structure, threads with different directions of rotation, and water-blocking components can improve sealing performance while achieving multiple positioning and limiting, thereby resisting vibration forces and improving the stability and reliability of the overall structure. Simultaneously, by using the first to fifth seals and water-blocking components, a multiple water-blocking structure can be obtained. For example, when water vapor enters along the mating gap between the cable 200 and the connector, and along the inner wall of the connector, the water-blocking path formed by the second seal 115, the water-blocking component, and the first seal 113 is longer, thereby improving water resistance and sealing performance.

[0135] According to some embodiments of this application, please refer to Figure 21 , Figure 21 This is a schematic diagram of the structure of a photovoltaic module 10 in some embodiments of this application. This application provides a photovoltaic module 10, including a photovoltaic cell module 11 and a photovoltaic junction box 12 mounted on the photovoltaic cell module 11. The photovoltaic junction box 12 includes a photovoltaic connector. The photovoltaic connector is the photovoltaic connector in any of the above embodiments.

[0136] For example, with Figure 21For example, a photovoltaic junction box 12 is located on the back of a photovoltaic module 11. The photovoltaic junction box 12 includes a box body (not shown in the figure), a cable 200 extending outwards from the box body, and a first connector 110a and a second connector 110b connected to the cable 200. The cable 200 includes a positive cable and a negative cable. The positive cable connects to the first connector 110a, and the negative cable connects to the second connector 110b. The first connector 110a is plugged into and connected to the second connector 110b on another photovoltaic module. The second connector 110b is plugged into and connected to the first connector 110a on another photovoltaic module. By providing photovoltaic connectors, electrical connections between multiple photovoltaic modules 11 can be achieved. It should be noted that... Figure 21 Only one photovoltaic cell module 11 is shown in the diagram. Various embodiments of the first and second connectors can be understood in conjunction with the content shown in the foregoing embodiments, and will not be elaborated here.

[0137] The photovoltaic module also possesses the advantages of the photovoltaic connectors mentioned above, so they will not be elaborated here.

[0138] According to some embodiments of this application, this application provides a photovoltaic system including the photovoltaic connector in any of the above embodiments; or, including the photovoltaic module in any of the above embodiments.

[0139] The photovoltaic system also possesses the advantages of the photovoltaic connectors or photovoltaic modules mentioned above, so they will not be elaborated here.

[0140] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0141] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A photovoltaic connector, characterized in that, It includes two connectors, at least one of which is a target connector; the target connector includes: The main body and the connector, wherein one end of the main body is plugged into another connector, and one of the other end of the main body and the connector is provided with a first internal thread, and the other of the other end of the main body and the connector is provided with a first external thread; A first sealing element has a through channel, the inner circumferential surface of which has a second internal thread, and the outer circumferential surface of which has a second external thread. The second internal thread and the first external thread mate, and the second external thread and the first internal thread mate, so that the first sealing element is threadedly connected to the body and the connector respectively. One of the second internal thread and the first external thread has a first protrusion, and the other of the second internal thread and the first external thread has a first recess, with the first protrusion and the first recess engaging. One of the second external thread and the first internal thread has a second protrusion, and the other of the second external thread and the first internal thread has a second recess, with the second protrusion and the second recess engaging. The direction of rotation of the second internal thread is opposite to that of the second external thread. The interior of the body, the interior of the connector, and the through channel together define a passage for cable routing. A water-blocking component is disposed within the through-channel. The water-blocking component includes a substrate and several water-blocking particles. The substrate and the first sealing element are integrally formed.

2. The photovoltaic connector according to claim 1, characterized in that, The second internal thread is provided with the first protrusion, and the first external thread is provided with the first recess; The first protrusion is located at the crest of the second internal thread, and the first concave portion is located at the root of the first external thread.

3. The photovoltaic connector according to claim 1, characterized in that, The second external thread has a second recess, and the first internal thread has a second protrusion; The second recess is located at the crest of the second external thread, and the second protrusion is located at the root of the first internal thread.

4. The photovoltaic connector according to claim 1, characterized in that, The second internal thread is provided with the first protrusion, the first external thread is provided with the first concave portion, the first internal thread is provided with the second protrusion, the second external thread is provided with the second concave portion, the second concave portion is provided corresponding to the first protrusion, and the first protrusion is formed by the second concave portion.

5. The photovoltaic connector according to claim 1, characterized in that, The second internal thread is provided with the first recess, the first external thread is provided with the first protrusion, the first internal thread is provided with the second recess, and the second external thread is provided with the second protrusion. The first recess and the second protrusion are provided correspondingly, and the second protrusion is formed by the recess of the first recess.

6. The photovoltaic connector according to any one of claims 1-5, characterized in that, The overlapping projections of the main body and the first seal on the reference plane, and the overlapping projections of the connector and the first seal on the reference plane, are at least partially overlapping. The reference plane is parallel to the axial direction of the through channel.

7. The photovoltaic connector according to any one of claims 1-5, characterized in that, The substrate has a cavity that extends through and connects to the through-passage channel. The cavity is used for the cable to pass through, and the plurality of water-blocking particles are disposed in the cavity.

8. The photovoltaic connector according to claim 7, characterized in that, The base is connected to the downstream side of the first seal in a direction from the inside of the through-channel toward the outside of the side where the connector is located.

9. The photovoltaic connector according to claim 8, characterized in that, The substrate has an opening on the side opposite to the first seal, and the opening communicates with the receiving cavity.

10. The photovoltaic connector according to claim 9, characterized in that, The connector is configured as a nut; in the direction from the inside of the through-channel to the outside of the side where the connector is located, the connector is provided with a threaded section and a mating section in sequence; The threaded section is provided with the first internal thread, and the other end of the main body is provided with the first external thread; the mating section is used to accommodate at least a portion of the base body.

11. The photovoltaic connector according to claim 10, characterized in that, The target connector also includes a second seal; The second seal is disposed within the through-channel and is located between the end wall of the connector and the base.

12. The photovoltaic connector according to claim 8, characterized in that, In the direction from the inside of the through-channel to the outside of the side where the connector is located, the cross-sectional area of ​​the receiving cavity gradually decreases or gradually increases; The cross-section of the receiving cavity is perpendicular to the direction from the inside of the through-channel to the outside of the side where the connector is located.

13. The photovoltaic connector according to any one of claims 1-5, characterized in that, The water-blocking particles are made of materials including silicone, alumina, polyacrylamide, or polyvinyl alcohol.

14. The photovoltaic connector according to any one of claims 1-5, characterized in that, The two connectors are referred to as the first connector and the second connector, respectively. The first connector includes a first connector body and a plurality of snap-fit ​​parts disposed at one end of the first connector body. The second connector includes a second connector body, and one end of the second connector body is provided with a plurality of snap-fit ​​holes. The plurality of snap-fit ​​parts are used to engage with the plurality of snap-fit ​​holes in a one-to-one snap-fit ​​manner. When the first connector is the target connector, the body of the first connector is the main body; when the second connector is the target connector, the body of the second connector is the main body. The photovoltaic connector further includes a third sealing element, which is fitted to the plurality of snap-fit ​​parts in a preset manner to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected; the preset manner includes the third sealing element being sleeved outside the plurality of snap-fit ​​parts, or the third sealing element being inserted into the plurality of snap-fit ​​parts.

15. The photovoltaic connector according to claim 14, characterized in that, The third seal is elastic; when the first connector body and the second connector body are connected, the third seal is in a stretched state.

16. The photovoltaic connector according to claim 14, characterized in that, The photovoltaic connector further includes a fourth sealing element, which is disposed at one end of the second connector body to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected. The fourth sealing element is elastic and has through holes that correspond to and cooperate with the plurality of snap-fit ​​parts; when the first connector body and the second connector body are connected, the fourth sealing element is in a stretched state.

17. The photovoltaic connector according to claim 14, characterized in that, The first connector further includes a plug-in portion disposed at one end of the first connector body, the plug-in portion and the plurality of snap-fit ​​portions being located at the same end of the first connector body, and the plurality of snap-fit ​​portions being arranged around the plug-in portion; One end of the second connector body is also provided with a socket, the socket and the plurality of locking holes are located at the same end of the second connector body, the plurality of locking holes are arranged around the socket, and the socket and the plug-in part are plugged in and engaged; The photovoltaic connector further includes a fifth sealing element, which is sleeved on the plug portion to seal between the first connector body and the second connector body when the first connector body and the second connector body are connected.

18. A photovoltaic module, characterized in that, It includes a photovoltaic cell module and a photovoltaic junction box mounted on the photovoltaic cell module, the photovoltaic junction box including a photovoltaic connector as described in any one of claims 1-17.

19. A photovoltaic system, characterized in that, It includes the photovoltaic connector as described in any one of claims 1-17; or, it includes the photovoltaic module as described in claim 18.

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