Photovoltaic connector, photovoltaic module and photovoltaic system

Abstract

The invention relates to the field of photovoltaic technology, in particular to a photovoltaic connector, a photovoltaic module and a photovoltaic system. In the embodiment of the invention, the photovoltaic connector at least comprises the two joints which are connected in an inserted manner, at least one of the two joints is configured as the target joint, so that the first sealing piece in the target joint is in threaded connection with the main body and the connecting piece respectively, and due to the overlapping projection of the main body and the first sealing piece on the reference surface, the first sealing piece can be in threaded connection with the target joint; and the overlapping projections of the connecting piece and the first sealing piece on the reference surface are at least partially overlapped, so that at least part of the first sealing piece can be clamped between the main body and the connecting piece. By means of the structure, the sealing performance of the connecting position of the main body and the connecting piece can be improved.

Description

Technical Field

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

[0002] Connectors are essential components for conducting electrical energy between different devices. In solar power generation scenarios, power transmission between photovoltaic modules primarily relies on plug-in connectors. However, because photovoltaic modules are often located outdoors, they face numerous challenges. Strong winds or waves at sea exert a constant force on the connector, subjecting the sealing components within the connector to significant external forces. These forces can easily cause the sealing components to deform, shift, or even break, rendering their sealing properties ineffective. This allows rain, moisture, and dust to enter the connector, impacting the safety and reliability of the entire photovoltaic system. Summary of the Invention

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

[0004] According to one aspect of the present application, an embodiment of the present application provides a photovoltaic connector, comprising two connectors connected by plugging, at least one of the two connectors being a target connector; the target connector comprising a main body, a connector, and a first sealing member. One end of the main body is plugged into the other connector, the other end of the main body and one of the connectors are provided with a first internal thread, and the other end of the main body and the other of the connectors are provided with a first external thread; the first sealing member is provided with a through channel, the inner circumference of the through channel is provided with a second internal thread, and the outer circumference of the through channel is provided with a second external thread; the second internal thread and the first external thread cooperate with each other, so that the first sealing member is threadedly connected to the main body and the connector, respectively; wherein the overlapping projections of the main body and the first sealing member on the reference surface, as well as the overlapping projections of the connector and the first sealing member on the reference surface, at least partially overlap; the reference surface is parallel to the axial direction of the through channel; the interior of the main body, the interior of the connector, and the through channel jointly define a passage for threading cables.

[0005] In some embodiments, a first protrusion is provided on one of the second internal thread and the first external thread, and a first recess is provided on the other of the second internal thread and the first external thread; the first protrusion and the first recess are snap-fitted.

[0006] In some embodiments, a first convex portion is provided on the second internal thread, and a first concave portion is provided on the first external thread; wherein the first convex portion is provided at the top of the second internal thread, and the first concave portion is provided at the bottom of the first external thread.

[0007] In some embodiments, a second protrusion is provided on one of the second external thread and the first internal thread, and a second recess is provided on the other of the second external thread and the first internal thread; the second protrusion and the second recess are snap-fitted.

[0008] In some embodiments, a second recess is provided on the second external thread, and a second protrusion is provided on the first internal thread; wherein the second recess is provided at the top of the second external thread, and the second protrusion is provided at the bottom of the first internal thread.

[0009] In some embodiments, a first protrusion is provided on one of the second internal thread and the first external thread, a first recess is provided on the other of the second internal thread and the first external thread, and the first protrusion and the first recess are snap-fitted together; a second protrusion is provided on one of the second external thread and the first internal thread, a second recess is provided on the other of the second external thread and the first internal thread, and the second protrusion and the second recess are snap-fitted together.

[0010] In some embodiments, when a first convex portion is provided on the second internal thread and a first concave portion is provided on the first external thread, a second convex portion is provided on the first internal thread and a second concave portion is provided on the second external thread, the second concave portion is arranged corresponding to the first convex portion, and the first convex portion is formed by the depression of the second concave portion; or, when a first concave portion is provided on the second internal thread and a first convex portion is provided on the first external thread, a second concave portion is provided on the first internal thread and a second convex portion is provided on the second external thread, the first concave portion and the second convex portion are arranged corresponding to the second convex portion, and the second convex portion is formed by the depression of the first concave portion.

[0011] In some embodiments, the second internal thread has a hand direction opposite to the hand direction of the second external thread.

[0012] In some embodiments, the target joint further includes a water-blocking component disposed in the penetration channel; the water-blocking component includes a base body and a plurality of water-blocking particles, the base body having a receiving cavity that is arranged through and connected to the penetration channel, the receiving cavity being used for cable penetration, and a plurality of water-blocking particles being disposed in the receiving cavity.

[0013] In some embodiments, the base is connected to the downstream side of the first sealing member in a direction from the inside of the self-piercing channel to the outside of the side where the connecting member is located.

[0014] In some embodiments, the base and the first sealing member are an integrally formed structure.

[0015] In some embodiments, an opening is provided on a side of the base body facing away from the first sealing component, and the opening is connected to the accommodating cavity.

[0016] In some embodiments, the connecting piece is configured as a nut; in the direction from the inside of the self-piercing channel to the outside of the side where the connecting piece is located, a threaded section and a mating section are sequentially provided in the connecting piece; a first internal thread is provided on the threaded section, and a first external thread is provided at the other end of the main body; the mating section is used to accommodate at least part of the base.

[0017] In some embodiments, the target joint further includes a second sealing member; the second sealing member is disposed in the penetration channel, and the second sealing member is located between the end wall of the connector and the base.

[0018] In some embodiments, the material of the water-blocking particles includes silica gel, aluminum oxide, polyacrylamide, or polyvinyl alcohol.

[0019] In some embodiments, the cross-sectional area of ​​the accommodating cavity gradually decreases or increases in the direction from the inside of the self-piercing channel to the outside of the side where the connector is located; the cross-sectional area of ​​the accommodating cavity is perpendicular to the direction from the inside of the self-piercing channel to the outside of the side where the connector is located.

[0020] In some embodiments, the two connectors are respectively a first connector and a second connector; the first connector includes a first connector body and a plurality of snap-fit ​​parts provided at one end of the first connector body, and the second connector includes a second connector body, and a plurality of snap-fit ​​holes are provided at one end of the second connector body, and the plurality of snap-fit ​​parts and the plurality of snap-fit ​​holes are snap-fitted in a one-to-one correspondence; 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 also includes a third seal, and the third seal is fitted with 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 seal being sleeved outside the plurality of snap-fit ​​parts, or the third seal being plugged into and fitted with the plurality of snap-fit ​​parts.

[0021] In some embodiments, the third sealing member is elastic; when the first joint body and the second joint body are connected, the third sealing member is in a stretched state.

[0022] In some embodiments, the photovoltaic connector also includes a fourth seal, which is arranged 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 the fourth seal is provided with through holes that correspond one-to-one with multiple snap-on parts; when the first connector body and the second connector body are connected, the fourth seal is in a stretched state.

[0023] In some embodiments, the first connector further includes a plug-in portion provided at one end of the first connector body, the plug-in portion and the multiple snap-on portions are located at the same end of the first connector body, and the multiple snap-on portions are arranged around the plug-in portion; a socket is further provided at one end of the second connector body, the socket and the multiple snap-on holes are located at the same end of the second connector body, and the multiple snap-on holes are arranged around the socket, and the socket and the plug-in portion are plugged in and matched; wherein, the photovoltaic connector further includes a fifth sealing member, which is sleeved on the plug-in 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.

[0024] According to another aspect of the present application, an embodiment of the present application provides a photovoltaic assembly, including a photovoltaic cell assembly and a photovoltaic junction box installed on the photovoltaic cell assembly, wherein the photovoltaic junction box includes the photovoltaic connector in any of the above embodiments.

[0025] According to another aspect of the present application, an embodiment of the present application provides a photovoltaic system, including the photovoltaic connector in any of the above embodiments; or, including the photovoltaic assembly in any of the above embodiments.

[0026] In the photovoltaic connector, photovoltaic assembly, and photovoltaic system described above, the photovoltaic connector includes at least two connectors that are pluggably connected. By configuring at least one of the two connectors as a target connector, a first sealant in the target connector is threadedly connected to a main body and a connector, respectively. Because the overlapping projections of the main body and the first sealant on a reference surface, as well as the overlapping projections of the connector and the first sealant on the reference surface, at least a portion of the first sealant can be considered to be sandwiched between the main body and the connector. In this structure, the interfaces formed between the first sealant and the main body, and between the first sealant and the connector, form multiple seals, thereby improving the sealing performance of the connection between the main body and the connector. Because the main body and the connector are threadedly connected by the first sealant, friction or elastic deformation of the mating surfaces between the first sealant and the main body, and between the first sealant and the connector, can provide buffering in the event of vibration or impact, resulting in a graded and distributed load. This reduces the risk of failure under complex operating conditions such as dynamic loads and temperature fluctuations, further improving the sealing performance of the connection between the main body and the connector.

[0027] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0029] Figure 1 This is a schematic structural diagram of a photovoltaic connector in some embodiments of the present application;

[0030] Figure 2 This is a schematic diagram of a partially exploded structure of a photovoltaic connector in some embodiments of the present application;

[0031] Figure 3 This is a partial structural diagram of the first connector in some embodiments of the present application;

[0032] Figure 4 This is a partial structural diagram of the second connector in some embodiments of the present application;

[0033] Figure 5 This is a schematic diagram of a partial cross-sectional structure of a connector in some embodiments of the present application;

[0034] Figure 6 This is a schematic structural diagram of a first sealing member in some embodiments of the present application;

[0035] Figure 7 This is a schematic cross-sectional structural diagram of a first sealing member in some embodiments of the present application;

[0036] Figure 8 Schematic diagram of a cross-sectional structure of a portion of the structure where the main body, the connector, and the first sealing member cooperate in some embodiments of the present application;

[0037] Figure 9 Schematic diagram of the projection relationship of the main body, the connecting member and the first sealing member in some embodiments of the present application;

[0038] Figure 10 Schematic diagram of the structure of photovoltaic connectors in other embodiments of the present application;

[0039] Figure 11 Schematic diagram of a partially exploded structure of a photovoltaic connector in some other embodiments of the present application;

[0040] Figure 12 Schematic diagram of a partial cross-sectional structure of a photovoltaic connector in some other embodiments of the present application;

[0041] Figure 13 Schematic diagram of the cross-sectional structure of the main body, the connector, the first sealing member and the water-blocking component in some other embodiments of the present application;

[0042] Figure 14 Schematic diagram of the cross-sectional structure of the first sealing member and the water-blocking component in cooperation with each other in some other embodiments of the present application;

[0043] Figure 15 Schematic diagram of the cross-sectional structure of the first sealing member and the water-blocking component in cooperation with each other in some other embodiments of the present application;

[0044] Figure 16 This is a schematic structural diagram of a photovoltaic connector in some other embodiments of the present application in which the first connector and the second connector are not connected;

[0045] Figure 17 for Figure 12 Schematic diagram of the local enlarged structure at G in the middle;

[0046] Figure 18 Schematic diagram of the structure of the third sealing member in some embodiments of the present application;

[0047] Figure 19 Schematic diagram of the structure of the fourth sealing member in some embodiments of the present application;

[0048] Figure 20 A partially enlarged cross-sectional structural diagram of the first connector and the second connector at the plug-fitting position in some other embodiments of the present application;

[0049] Figure 21 Schematic diagram of the structure of photovoltaic modules in some embodiments of the present application.

[0050] Description of reference numerals:

[0051] Photovoltaic assembly 10, photovoltaic cell assembly 11, photovoltaic junction box 12;

[0052] Photovoltaic connectors 100a, 100b;

[0053] First connector 110a, 110c, first connector body 111a, snap portion 116a, plug portion 117a, socket 118a, second connector 110b, 110d, second connector body 111b, snap hole k2, plug hole k5, pin 118b, target connector J1, J2, main body 111, connector 112a, 112b, threaded section 1121, mating section 1122, end wall 1123, first sealing member 113, through passage 1131, water-blocking components 114a, 114b, bases 1141a, 1141b, accommodating chamber Q, opening k1, water-blocking particles 1142, second sealing member 115;

[0054] The third sealing member 120, socket k3;

[0055] Fourth sealing member 130, through hole k4;

[0056] Fifth sealing members 140a, 140b;

[0057] First internal thread 1101, first external thread 1102, second internal thread 1132, second external thread 1133, first convex portion 1103, first concave portion 1104, second convex portion 1105, second concave portion 1106;

[0058] Cable 200;

[0059] Reference surface E, first projection y1, second projection y2. DETAILED DESCRIPTION

[0060] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0061] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0062] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0063] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0064] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0066] According to some embodiments of this application, please refer to Figure 1 and Figure 2 , Figure 1 Schematic diagram of the structure of a photovoltaic connector 100a in some embodiments of the present application. Figure 2 This is a partially exploded structural diagram of a photovoltaic connector 100a in some embodiments of the present application. The embodiments of the present application provide a photovoltaic connector 100a, including two plug-connected connectors, at least one of which is a target connector J1.

[0067] The two connectors are respectively a first connector 110a and a second connector 110b. The two connectors are plugged together, that is, one connector is a male connector and the other connector is a female connector. Figure 1 and Figure 2, the 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 As an example, the first connector 110a and the second connector 110b are both target connectors J1.

[0068] Combined with reference Figures 3 to 8 , Figure 3 This is a partial structural diagram of the first connector 110a in some embodiments of the present application. Figure 4 This is a partial structural diagram of the second connector 110b in some embodiments of the present application. Figure 5 This is a partial cross-sectional structural diagram of the connecting member 112a in some embodiments of the present application. Figure 6 This is a schematic structural diagram of the first sealing member 113 in some embodiments of the present application. Figure 7 This is a schematic cross-sectional view of the first sealing member 113 in some embodiments of the present application. Figure 8 This is a schematic cross-sectional view of the structure of the main body 111, the connector 112a, and the first seal 113 in some embodiments of the present application. The target joint J1 includes the main body 111, the connector 112a, and the first seal 113. One end of the main body 111 is plug-connected to the other joint. The other end of the main body 111 and one of the connectors 112a are provided with a first internal thread 1101, and the other end of the main body 111 and the other of the connectors 112a are provided with a first external thread 1102. The other joint is the joint other than the joint where the main body 111 is located. The first seal 113 is provided with a through channel 1131, the inner circumference of the through channel 1131 is provided with a second internal thread 1132, and the outer circumference of the through channel 1131 is provided with a second external thread 1133. The second internal thread 1132 cooperates with the first external thread 1102 , and the second external thread 1133 cooperates with the first internal thread 1101 , so that the first sealing member 113 is threadedly connected to the main body 111 and the connecting member 112 a , respectively.

[0069] Exemplary, with reference to Figure 3 and Figure 4, the 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 the first connector 110a and the second connector 110b are both the target connector J1, it means that the first connector 110a and the second connector 110b have the same structure except for the different structures at the plug-in connection. That is, the structures of one end of the plug-in connection between the first connector body 111a and the second connector body 111b are different, and the "way in which the first connector body 111a and the connector 112a and the first seal 113 cooperate" is the same as the "way in which the second connector body 111b and the connector 112a and the first seal 113 cooperate."

[0070] For example, Figure 3 and Figure 4 For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 5 For example, the connecting member 112a is provided with a first internal thread 1101. Of course, the first joint body 111a and the second joint body 111b can also be provided with a first internal thread 1101 respectively, and the connecting member 112a is provided with a first external thread 1102, which is not specifically limited here.

[0071] Continue to refer to Figure 8 , and combined with reference Figure 9 , Figure 9 This is a schematic diagram of the projection relationship of the main body 111, the connector 112a, and the first seal 113 in some embodiments of the present application. The overlapping projections of the main body 111 and the first seal 113 on the reference plane E, as well as the overlapping projections of the connector 112a and the first seal 113 on the reference plane E, at least partially overlap. The 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 passage for passing the cable 200. Figure 2 In order to reflect the cooperation between the cable 200 and the photovoltaic connector 100a, the cable 200 is indicated by a dotted line. In the related structures of the photovoltaic connector shown below, the cable 200 is also indicated by a dotted line, and no further details are given.

[0072] For example, Figure 8 and Figure 9For example, the overlapping projections of the main body 111 and the first sealing member 113 on the reference plane E are the first projection y1, and the overlapping projections of the connecting member 112a and the first sealing member 113 on the reference plane E are the second projection y2. The first projection y1 and the second projection y2 completely overlap. Figure 5 and Figure 8 When the first internal thread 1101 is provided on the connecting member 112a, the first sealing member 113 is located inside the connecting member 112a, and the portion of the main body 111 connected to the first sealing member 113 is also located inside the connecting member 112a. When the first internal thread 1101 is provided on the main body 111, it can be understood by reference, and will not be described in detail here.

[0073] Thus, 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. Because the overlapping projections of the main body 111 and the first seal 113 on the reference plane E, as well as the overlapping projections of the connector 112a and the first seal 113 on the reference plane E, at least a portion of the first seal 113 can be considered to be sandwiched between the main body 111 and the connector 112a. In this structure, the interfaces formed between the first seal 113 and the main body 111 and between the first seal 113 and the connector 112a form multiple seals, thereby improving the sealing performance of the connection between the main body 111 and the connector 112a. Since the main body 111 and the connector 112a are threadedly connected 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 distributed load, thereby reducing the risk of failure under complex working conditions such as dynamic loads and temperature fluctuations, and further helping to improve the sealing of the connection between the main body 111 and the connector 112a.

[0074] According to 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 snap-fitted.

[0075] For example, Figure 7 For example, the second internal thread 1132 is provided with a first protrusion 1103, Figure 3 and Figure 4For example, the situation where the first recess 1104 is provided on the first external thread 1102 is illustrated.

[0076] The first protrusion 1103 and the first recess 1104 may each have one, two, four, or other number, without specific limitation herein. When a plurality of first protrusions 1103 and first recesses 1104 are provided, all first protrusions 1103 may be arranged axially and spaced apart from each other along the corresponding thread structure, or all first protrusions 1103 may be arranged circumferentially and spaced apart from each other around the corresponding thread structure, or all first protrusions 1103 may be distributed at intervals on the corresponding thread structure, with the first recesses 1104 being arranged in coordination with the first protrusions 1103, without specific limitation herein.

[0077] In this way, by providing the first protrusion 1103 and the first recess 1104, a stop structure is formed by utilizing the first protrusion 1103 and the first recess 1104 that are snap-fitted. When the first external thread 1102 and the second internal thread 1132 are subjected to vibration, impact, or axial force, the physical limitation of the first protrusion 1103 and the first recess 1104 can directly prevent the first external thread 1102 and the second internal thread 1132 from rotating relative to each other, thereby making the first external thread 1102 and the second internal thread 1132 fit more tightly, thereby 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.

[0078] According to 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 convex portion 1103, and the first external thread 1102 is provided with a first concave portion 1104. The first convex portion 1103 is provided at the top of the second internal thread 1132, and the first concave portion 1104 is provided at the bottom of the first external thread 1102.

[0079] The crest is the top of the raised part in the thread profile. The root is the bottom of the recessed part between two adjacent crests in the thread profile.

[0080] The crest of the second internal thread 1132 and the root of the first external thread 1102 are one of the primary contact surfaces bearing force. Under axial load, force is transmitted through the thread surfaces. Positioning 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 allows the clamping structure formed by the first protrusion 1103 and the first recess 1104 to directly act on the area where force is concentrated. When the thread tends to loosen, this clamping structure can directly block relative rotation from the force transmission path, preventing it more quickly. Compared to positioning the first protrusion 1103 and the first recess 1104 on the inclined surface of the corresponding thread structure, this can further maintain the complete contact area of ​​the inclined surface, thereby improving the load-bearing capacity of the thread. Therefore, by positioning the first protrusion 1103 and the first recess 1104, more precise locking and more stable anti-loosening can be achieved while balancing thread strength and ease of processing.

[0081] According to some embodiments of this application, please continue to refer to Figure 2 、 Figures 5 to 7 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 snap-fitted.

[0082] The relevant implementations of the second convex portion 1105 and the second concave portion 1106 can be understood by referring to the relevant implementations of the first convex portion 1103 and the first concave portion 1104 illustrated above, and are not described in detail here.

[0083] In this way, by providing the second protrusion 1105 and the second recess 1106, a retaining structure is formed by utilizing the second protrusion 1105 and the second recess 1106 that are engaged with each other. When the second external thread 1133 and the first internal thread 1101 are subjected to vibration, impact, or axial force, the physical limitation of the second protrusion 1105 and the second recess 1106 can directly prevent the second external thread 1133 and the first internal thread 1101 from rotating relative to each other, thereby making the second external thread 1133 and the first internal thread 1101 fit more tightly, thereby 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, it is also easy to manufacture.

[0084] According to some embodiments of this application, please continue to refer to Figure 2 、 Figures 5 to 7The second outer thread 1133 is provided with a second recess 1106, and the first inner thread 1101 is provided with a second protrusion 1105. The second recess 1106 is provided at the top of the second outer thread 1133, and the second protrusion 1105 is provided at the bottom of the first inner thread 1101.

[0085] The relevant implementations of the second convex portion 1105 and the second concave portion 1106 can be understood by referring to the relevant implementations of the first convex portion 1103 and the first concave portion 1104 illustrated above, and are not described in detail here.

[0086] The second recess 1106 is arranged at the top of the second external thread 1133, and the second protrusion 1105 is arranged at the bottom of the first internal thread 1101, so that the clamping structure formed by the second protrusion 1105 and the second recess 1106 are clamped together directly acts on the force concentrated area. When the thread tends to loosen, the clamping structure can directly block the relative rotation from the force transmission path, and the blocking is more timely. Compared with arranging the second protrusion 1105 and the second recess 1106 on the inclined surface of the corresponding thread structure, the complete contact area of ​​the inclined surface can be further maintained, which is conducive to improving the bearing capacity of the thread. Therefore, by setting the positions of the second protrusion 1105 and the second recess 1106, more precise locking and more stable anti-loosening can be achieved while taking into account the strength of the thread and facilitating processing.

[0087] According to some embodiments of this application, please continue to refer to Figures 2 to 7 A first protrusion 1103 is provided on one of the second internal thread 1132 and the first external thread 1102, and a first recess 1104 is provided on the other of the two. The first protrusion 1103 and the first recess 1104 are snap-fitted together. 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. The second protrusion 1105 and the second recess 1106 are snap-fitted together.

[0088] By respectively providing corresponding matching concave and convex portions on the interface formed between the first sealing member 113 and the main body 111 and the interface formed between the first sealing member 113 and the connecting member 112a, a multiple stop structure is formed. Since at least part of the first sealing member 113 can be regarded as being sandwiched between the main body 111 and the connecting member 112a, in combination with reference to Figure 8Through the cooperation of the corresponding thread structures, the first sealing member 113, the main body 111 and the connecting member 112a roughly form a whole. When there is a loosening tendency 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 clamping structure formed by the "first protrusion 1103 and the first recess 1104" and the clamping structure formed by the "second protrusion 1105 and the second recess 1106" can interact with each other to jointly improve the tightness and stability of the connection between the first sealing member 113, the main body 111 and the connecting member 112a.

[0089] According to some embodiments of this application, please continue to refer to Figures 2 to 7 , when the first convex portion 1103 is provided on the second internal thread 1132 and the first concave portion 1104 is provided on the first external thread 1102, the second convex portion 1105 is provided on the first internal thread 1101, and the second concave portion 1106 is provided on the second external thread 1133, the second concave portion 1106 is arranged corresponding to the first convex portion 1103, and the first convex portion 1103 is formed by the depression of the second concave portion 1106; or, when the first concave portion 1104 is provided on the second internal thread 1132 and the first convex portion 1103 is provided on the first external thread 1102, the second concave portion 1106 is provided on the first internal thread 1101, and the second convex portion 1105 is provided on the second external thread 1133, the first concave portion 1104 and the second convex portion 1105 are arranged corresponding to the second convex portion 1105, and the second convex portion 1105 is formed by the depression of the first concave portion 1104.

[0090] For example, Figures 2 to 7 For example, the first internal thread 1101 is provided with a second convex portion 1105, the first external thread 1102 is provided with a first concave portion 1104, the second internal thread 1132 is provided with a first convex portion 1103, the second external thread 1133 is provided with a second concave portion 1106, and the first convex portion 1103 is formed by the depression of the second concave portion 1106.

[0091] Since the first convex portion 1103 is formed by the depression of the second concave portion 1106, or the second convex portion 1105 is formed by the depression of the first concave portion 1104, the inner wall and outer wall of the first seal 113 form an inner and outer complementary structure. When any one of the first seal 113, the main body 111 and the connector 112a is subjected to a force, the concave and convex structures on the inner wall and outer wall of the first seal 113 form a mutually supporting structure, thereby improving the overall anti-deformation ability of the first seal 113, the main body 111 and the connector 112a, and further improving the stability, sealing and reliability of the overall structure. At the same time, by forming a convex portion through the corresponding concave depression, the assembly complexity can be reduced and installation can be facilitated. In addition, in combination with the method of setting corresponding concave and convex portions in coordination with the tooth bottom and tooth top as shown in some of the aforementioned embodiments, the stability, sealing and reliability of the overall structure can be further improved.

[0092] According to some embodiments of this application, please continue to refer to Figures 2 to 8 The rotation direction of the second internal thread 1132 is opposite to the rotation direction of the second external thread 1133.

[0093] For example, the second internal thread 1132 has a right-handed rotation direction, and the second external thread 1133 has a left-handed rotation direction; alternatively, the second internal thread 1132 has a left-handed rotation direction, and the second external thread 1133 has a right-handed rotation direction. The rotation direction of the first external thread 1102 is the same as the rotation direction of the second internal thread 1132, and the rotation direction of the first internal thread 1101 is the same as the rotation direction of the second external thread 1133.

[0094] Combined with reference Figures 2 to 8 Taking the second internal thread 1132 as a left-handed rotation and the second external thread 1133 as a right-handed rotation as an example, when the connector 112a has a right-handed loosening tendency, the first seal 113 will be subjected to a clockwise torque, but the second internal thread 1132 of the first seal 113 is left-handed, which will generate a counterclockwise torque on the main body 111. The clockwise torque and the counterclockwise torque have opposite torque directions and can offset part of the loosening force, thereby reducing the risk of overall loosening. In this way, by making the rotation direction of the second internal thread 1132 and the rotation direction of the second external thread 1133 opposite, a reverse constraint can be formed when there is a loosening tendency. 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 corresponding concave and convex parts are physically clamped to form a structure that multiplexes the connection reliability. When the photovoltaic connector 100a is in a scene with a complex force environment, it can still be beneficial to improve the sealing, reliability and stability of the photovoltaic connector 100a.

[0095] According to some embodiments of this application, please refer to Figures 10 to 13 , Figure 10 Schematic diagram of the structure of a photovoltaic connector 100b in some other embodiments of the present application. Figure 11 Schematic diagram of a partially exploded structure of a photovoltaic connector 100b in some other embodiments of the present application. Figure 12 Schematic diagram of a partial cross-sectional structure of a photovoltaic connector 100b in some other embodiments of the present application. Figure 13 This is a schematic cross-sectional view of the structure of the main body 111, connector 112b, first seal 113, and water-blocking component 114a in some other embodiments of the present application. The target joint J2 also includes a water-blocking component 114a disposed within the passage. 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 extending through the passage and communicating with the passage. The receiving cavity Q is used to pass the cable 200 through, and the plurality of water-blocking particles 1142 are disposed within the receiving cavity Q.

[0096] For example, Figure 10 For example, the first connector 110c and the second connector 110d are both target connectors J2. The target connector J1 has the same structure as the target connector J2, which will not be described in detail here.

[0097] The water-blocking particles 1142 are used to prevent water and moisture from entering the interior of the cable 200, thereby protecting the structure of the cable 200. The water-blocking particles 1142 are provided in a granular shape.

[0098] When the cable 200 passes through the accommodating cavity Q, the water-blocking particles 1142 fill the area surrounding the portion of the cable 200 located in the accommodating cavity Q. The gaps between the water-blocking particles 1142 form a curved path. When water vapor enters the accommodating cavity Q, it is not only absorbed by the water-blocking particles 1142, but the curved path also limits further penetration of the vapor along the longitudinal direction of the cable 200. When the photovoltaic connector is subjected to external forces, the gaps between the water-blocking particles 1142 serve as buffer spaces. Slight displacement and stacking of the water-blocking particles 1142 adjust and disperse stress, improving the overall structural stability and allowing the water-blocking particles 1142 to adapt to changes in the shape of the cable 200, thereby maintaining contact with the cable 200 and further protecting it.

[0099] According to some embodiments of this application, please continue to refer to Figures 11 to 13 The base 1141 a is connected to the downstream side of the first sealing member 113 in a direction from the inside of the penetrating channel to the outside of the side where the connecting member 112 b is located.

[0100] In this way, the water-blocking component 114a is located on the downstream side of the first seal 113, thereby blocking water on the downstream side of the first seal 113, reducing the risk of water vapor intrusion from the downstream side of the first seal 113, and further improving the reliability and sealing of the connection between the first seal 113, the connector 112b, and the main body 111. In addition, when the first seal 113, the connector 112b, and the main body 111 are connected, the water-blocking component 114a can be squeezed so that the water-blocking component 114a can be more tightly fitted between the connector 112b and the first seal 113, thereby further improving the water-blocking capability.

[0101] According to some embodiments of this application, please continue to refer to Figures 11 to 13 , and combined with reference Figure 14 , Figure 14 This is a schematic cross-sectional structural diagram of the cooperation between the first sealing member 113 and the water-blocking component 114 a in some other embodiments of the present application, where the base 1141 a and the first sealing member 113 are an integrally formed structure.

[0102] Because the base 1141a and first seal 113 are integrally molded, there is no physical interface between them. This structurally reduces gap issues caused by assembly errors, allowing for a continuous and complete sealing structure, thereby improving the sealing effect. Furthermore, by integrally molding the base 1141a and first seal 113, the base 1141a and first seal 113 form a single unit with more uniform mechanical properties, thereby enhancing structural rigidity and deformation resistance, and reducing the risk of failure due to separation between the base 1141a and first seal 113. Furthermore, this simplifies the manufacturing process and improves efficiency.

[0103] According to some embodiments of this application, please continue to refer to Figures 11 to 14 An opening k1 is provided on a side of the base 1141 a away from the first sealing member 113 , and the opening k1 is connected to the accommodating cavity Q.

[0104] This is not only beneficial for assembling the cable 200, but also facilitates the base 1141a to directly abut against the connector 112b on the side facing away from the first seal 113, so that the deformation of the base 1141a can be used during the assembly process to more tightly wrap the portion of the cable 200 located in the accommodating cavity Q, thereby improving the water-blocking effect.

[0105] According to some embodiments of this application, please continue to refer to Figures 11 to 14Connector 112b is configured as a nut. Connector 112b is provided with a threaded section 1121 and a mating section 1122, arranged in sequence, from the interior of the self-piercing channel toward the exterior of the side where connector 112b is located. Threaded section 1121 is provided with a first internal thread 1101, while the other end of body 111 is provided with a first external thread 1102. Mating section 1122 is configured to accommodate at least a portion of base 1141a.

[0106] In this way, by providing the fitting section 1122 in the connector 112b, it is not only convenient to install the water-blocking component 114a, but also convenient to utilize the fitting section 1122 to match the deformation of the base 1141a to achieve a tighter fitting structure, thereby improving the sealing and water-blocking properties.

[0107] According to some embodiments of this application, please continue to refer to Figures 11 to 13 The target joint J2 further includes a second sealing member 115. The second sealing member 115 is disposed in the penetration channel and is located between the end wall 1123 of the connecting member 112b and the base 1141a.

[0108] Illustratively, the second sealing member 115 is an annular member.

[0109] Thus, by providing the second sealing member 115 between the end wall 1123 of the connector 112b and the base 1141a, the water-blocking performance is further improved. Furthermore, since the base 1141a can directly abut the second sealing member 115, the second sealing member 115 can be used to cooperate with the deformation of the base 1141a to improve the sealing between the second sealing member 115 and the substrate.

[0110] Of course, in the above diagram Figure 1 and Figure 2 In the embodiment, a second sealing member 115 may also be provided, and the second sealing member 115 is located between the first sealing member 113 and the end wall of the connecting member 112a.

[0111] According to some embodiments of this application, please continue to refer to Figure 13 and Figure 14 The material of the water-blocking particles 1142 includes silica gel, aluminum oxide, polyacrylamide or polyvinyl alcohol.

[0112] Silicone has good weather resistance, stability, and elastic deformation ability. In this way, while blocking water, the silicone can be deformed to tightly wrap the cable 200 and improve the tight fit between the corresponding components, thereby improving the sealing performance.

[0113] Aluminum oxide has good strength, wear resistance and stability. This can improve the strength and stability of the overall structure while blocking water.

[0114] Polyacrylamide has high water absorption and expansion properties, so it can block water while improving the tightness between the water-blocking particles 1142 and the cable 200.

[0115] Polyvinyl alcohol has controllable water absorption and film-forming properties, and has the dual functions of expansion sealing and blocking moisture penetration.

[0116] In this way, the material of the water-blocking particles 1142 can be flexibly selected and is not specifically limited here.

[0117] According to some embodiments of this application, please refer to Figure 15 , Figure 15 This is a schematic cross-sectional view of the first sealing member 113 and the water-blocking member 114b in cooperation with each other in some other embodiments of the present application. The cross-sectional area of ​​the accommodating cavity Q formed by the base 1141b gradually decreases or increases in a direction from the interior of the self-piercing channel toward the exterior of the side where the connector 112b is located. The cross-section of the accommodating cavity Q is perpendicular to the direction from the interior of the self-piercing channel toward the exterior of the side where the connector 112b is located.

[0118] In this way, when the photovoltaic connector is subjected to external force, the inner wall of the accommodating cavity Q of the water-blocking component 114 b can be used to disperse the stress, thereby further improving the structural reliability of the photovoltaic connector.

[0119] It should be noted that, in conjunction with the reference Figure 13 In such a structure, through the deformation of the second sealing member 115, the water-blocking particles 1142, and the base 1141a, the cooperation of the first sealing member 113 with the main body 111 and the connector 112b, and the cooperation of the corresponding concave and convex portions illustrated in some of the aforementioned embodiments, not only a multiple water-blocking structure is formed to extend the water-blocking path, but also the mutual cooperation of the various components improves the overall structural stability, thereby achieving better sealing when the photovoltaic connector is subjected to external forces.

[0120] According to some embodiments of this application, please continue to refer to Figure 3 、 Figure 4 , and combined with reference Figure 16 and Figure 17 , Figure 16 This is a schematic structural diagram of a photovoltaic connector 100b in some other embodiments of the present application in which the first connector 110c and the second connector 110d are not connected. Figure 17 for Figure 12A partial enlarged structural diagram at point G in the middle shows two connectors, namely a first connector 110c and a second connector 110d. The first connector 110c includes a first connector body 111a and multiple snap-fitting portions 116a disposed at one end of the first connector body 111a. The second connector 110d includes a second connector body 111b, one end of which is provided with multiple snap-fitting holes k2. The multiple snap-fitting portions 116a snap-fit ​​into the multiple snap-fitting holes k2 in a one-to-one correspondence. When the first connector 110c is the target connector J2, the first connector body 111a serves as the main body 111. When the second connector 110d is the target connector J2, the second connector body 111b serves as the main body 111. The photovoltaic connector 100b also includes a third seal 120, which engages with the multiple snap-fitting 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 manner includes that the third sealing member 120 is sleeved outside the plurality of buckle portions 116 a , or the third sealing member 120 is plugged into and matched with the plurality of buckle portions 116 a .

[0121] For example, Figure 16 and Figure 17 For example, the third sealing member 120 is plugged into and matched with the plurality of buckle portions 116a. Figure 18 , Figure 18 Schematic diagram of the structure of the third sealing member 120 in some embodiments of the present application. The third sealing member 120 is arranged in an annular shape, and is provided with a socket k3 that is plugged into and matched with the multiple buckle portions 116a one by one.

[0122] In this way, the sealing performance of the connection between the first joint body 111 a and the second joint body 111 b can be improved.

[0123] According to some embodiments of this application, please continue to refer to Figure 3 、 Figure 4 、 Figures 16 to 18 The third sealing member 120 is elastic. When the first joint body 111a and the second joint body 111b are connected, the third sealing member 120 is in a stretched state.

[0124] Since the snap portion 116a has a certain elasticity, when the third sealing member 120 cooperates with the snap portion 116a, the elasticity of the snap portion 116a can be utilized to make the third sealing member 120 more tightly fit between the first joint body 111a and the second joint body 111b, thereby further improving the sealing performance of the connection between the first joint body 111a and the second joint body 111b.

[0125] According to some embodiments of this application, please continue to refer to Figure 11 、 Figure 17 , and combined with reference Figure 19 , Figure 19 The following is a schematic diagram of the structure of the fourth seal 130 in some embodiments of the present application. The photovoltaic connector 100b also 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 the first connector body 111a and the second connector body 111b are connected. The fourth seal 130 is elastic and has through holes k4 formed therein that correspond one-to-one with the 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.

[0126] Since the snap portion 116a has a certain elasticity, when the fourth seal 130 cooperates with the snap portion 116a, the elasticity of the snap portion 116a can be utilized to make the fourth seal 130 fit more tightly between the first joint body 111a and the second joint body 111b, thereby further improving the sealing performance of the connection between the first joint body 111a and the second joint body 111b.

[0127] Thus, by providing the third sealing member 120 and the fourth sealing member 130 , a double sealing structure can be formed between the first joint body 111 a and the second joint body 111 b , thereby further improving the sealing performance.

[0128] It should be noted that in Figure 12 and Figure 17 In the illustrated case, in order to illustrate the relationship between the buckle portion 116a and the third sealing member 120 and the fourth sealing member 130, the third sealing member 120 and the fourth sealing member 130 are not cross-sectionally processed. Figure 18 ,exist Figure 17 In FIG, the socket k3 on the third sealing member 120 is indicated by a dotted line. Figure 20 You can also refer to Figure 17 Come to understand, no more elaboration.

[0129] According to 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 provided at one end of the first connector body 111a. The plug-in portion 117a and the 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. A socket k5 is further provided at one end of the second connector body 111b. The socket k5 and the 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 pluggably mated. The photovoltaic connector 100b further includes a fifth sealing member 140a. The fifth sealing member 140a 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.

[0130] Thus, by providing the fifth sealing member 140a, the sealing performance at the jack k5 can be further improved. In addition, because the multiple snap portions 116a are arranged around the plug portion 117a, combined with the third sealing member 120 and / or the fourth sealing member 130, a sealing structure is formed around the periphery of the jack k5, further improving the sealing performance at the connection between the first connector body 111a and the second connector body 111b.

[0131] It should be noted that Figure 17 For example, the fifth sealing member 140a can be located outside the insertion hole k5. Figure 20 For example, Figure 20 This is a partially enlarged cross-sectional structural diagram of the first connector 110c and the second connector 110b at the plug-in mating position in some embodiments of the present application. The fifth sealing member 140b can be located in the plug hole k5, which is not specifically limited here. Figure 17 and Figure 20 In order to illustrate the fifth sealing member, it is illustrated with a solid line and not cross-sectionally. Figure 1 and Figure 2 In the illustrated photovoltaic connector 100a, structures such as the snap portion 116a, the plug portion 117a, the third sealing member 120 and the fourth sealing member 130 can also be understood with reference to the above description and are not described in detail here.

[0132] It can be understood that the material of the first joint body 111a and the material of the second joint 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 infiltration due to the gap at the connection between the first joint body 111a and the second joint body 111b can be reduced.

[0133] According to some embodiments of this application, please continue to refer to Figure 3 、 Figure 4 and Figure 12, a socket 118a is provided in the first connector body 111a, and a pin 118b is provided in the second connector body 111b. Figure 3 and Figure 4 In the figure, 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 plugged together, 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 electrically connects the cable 200 at the first connector 110c and the cable 200 at the second connector 110d.

[0134] It should be noted that in the above diagram Figure 12 、 Figure 17 and Figure 20 In order to conveniently reflect the matching relationship between the socket 118a and the pin 118b, the socket 118a and the pin 118b are indicated by solid lines.

[0135] It should also be noted that the photovoltaic connectors illustrated in some of the above embodiments can be applied to, including but not limited to, offshore photovoltaic modules 10. It is understood that under the action of waves at sea, the offshore photovoltaic modules 10 will swing with the waves, thereby subjecting the components within the photovoltaic connector to vibration forces. The photovoltaic connector provided by the embodiments of the present application can utilize the first seal 113, the concave and convex portions provided on the corresponding threaded structure, threads of different rotation directions, and water-blocking components to achieve multiple positioning and limiting while improving the sealing performance, thereby resisting vibration forces and improving the stability and reliability of the overall structure. At the same time, 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 matching gap between the cable 200 and the connector and 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.

[0136] According to some embodiments of this application, please refer to Figure 21 , Figure 21 The following is a schematic diagram of the structure of a photovoltaic assembly 10 in some embodiments of the present application. The embodiments of the present application provide a photovoltaic assembly 10, comprising a photovoltaic cell assembly 11 and a photovoltaic junction box 12 mounted on the photovoltaic cell assembly 11. The photovoltaic junction box 12 includes a photovoltaic connector. The photovoltaic connector is any of the photovoltaic connectors in the above embodiments.

[0137] For example, Figure 21For example, the photovoltaic junction box 12 is arranged on the back of the photovoltaic cell assembly 11. The photovoltaic junction box 12 includes a box body (not shown in the figure), a cable 200 extending outward 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 is connected to the first connector 110a, and the negative cable is connected to the second connector 110b. The first connector 110a is plugged in and connected to the second connector 110b on another photovoltaic cell assembly. The second connector 110b is plugged in and connected to the first connector 110a on another photovoltaic cell assembly. By setting a photovoltaic connector, electrical connection between multiple photovoltaic cell assemblies 11 can be achieved. It should be noted that in Figure 21 Only one photovoltaic cell assembly 11 is shown. Various embodiments of the first connector and the second connector can be understood in conjunction with the contents shown in the aforementioned embodiments, and will not be described in detail here.

[0138] The advantages of the above photovoltaic connectors are also possessed by the photovoltaic module, which will not be elaborated here.

[0139] According to some embodiments of the present application, an embodiment of the present application provides a photovoltaic system, including the photovoltaic connector in any of the above embodiments; or, including the photovoltaic assembly in any of the above embodiments.

[0140] The advantages of the above photovoltaic connectors or photovoltaic modules are also possessed by the photovoltaic system and will not be elaborated here.

[0141] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0142] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A photovoltaic connector, characterized in that: The invention comprises two connectors connected by plugging, at least one of the two connectors is a target connector; the target connector comprises: A main body and a connector, wherein one end of the main body is plug-connected to another connector, the other end of the main body and one of the connectors are provided with a first internal thread, and the other end of the main body and the other of the connectors are provided with a first external thread; and A first sealing member is provided with a through-channel, an inner circumferential surface of the through-channel is provided with a second internal thread, and an outer circumferential surface of the through-channel is provided with a second external thread; the second internal thread cooperates with the first external thread, and the second external thread cooperates with the first internal thread, so that the first sealing member is threadedly connected to the main body and the connecting member, respectively; The overlapping projections of the main body and the first seal on the reference surface, as well as the overlapping projections of the connecting member and the first seal on the reference surface, at least partially overlap; the reference surface is parallel to the axial direction of the through-channel; the interior of the main body, the interior of the connecting member and the through-channel jointly define a passage for passing cables.

2. The photovoltaic connector according to claim 1, characterized in that: A first convex portion is provided on one of the second internal thread and the first external thread, and a first concave portion is provided on the other of the second internal thread and the first external thread; The first protrusion and the first recess are snap-fitted.

3. The photovoltaic connector according to claim 2, characterized in that: The second internal thread is provided with the first convex portion, and the first external thread is provided with the first concave portion; Wherein, the first convex portion is provided at the crest of the second internal thread, and the first concave portion is provided at the bottom of the first external thread.

4. The photovoltaic connector according to claim 1, characterized in that: A second convex portion is provided on one of the second external thread and the first internal thread, and a second concave portion is provided on the other of the second external thread and the first internal thread; The second protrusion and the second recess are snap-fitted.

5. The photovoltaic connector according to claim 4, characterized in that: The second external thread is provided with the second concave portion, and the first internal thread is provided with the second convex portion; The second concave portion is provided at the crest of the second external thread, and the second convex portion is provided at the bottom of the first internal thread.

6. The photovoltaic connector according to claim 1, characterized in that: One of the second internal thread and the first external thread is provided with a first convex portion, and the other of the second internal thread and the first external thread is provided with a first concave portion, and the first convex portion and the first concave portion are snap-fitted; A second convex portion is provided on one of the second external thread and the first internal thread, and a second concave portion is provided on the other of the second external thread and the first internal thread, and the second convex portion and the second concave portion are snap-fitted.

7. The photovoltaic connector according to claim 6, characterized in that: When the second internal thread is provided with the first convex portion and the first external thread is provided with the first concave portion, the first internal thread is provided with a second convex portion and the second external thread is provided with a second concave portion, the second concave portion is provided corresponding to the first convex portion, and the first convex portion is formed by the depression of the second concave portion; or When the first recess is provided on the second internal thread and the first convex is provided on the first external thread, a second recess is provided on the first internal thread and a second convex is provided on the second external thread. The first recess and the second convex are arranged correspondingly, and the second convex is formed by the depression of the first recess.

8. The photovoltaic connector according to any one of claims 1 to 7, characterized in that: The rotation direction of the second internal thread is opposite to the rotation direction of the second external thread.

9. The photovoltaic connector according to any one of claims 1 to 7, characterized in that: The target joint further includes a water-blocking component disposed in the penetration channel; The water-blocking component includes a base and a plurality of water-blocking particles. The base has an accommodating cavity that is penetrated and communicates with the insertion channel. The accommodating cavity is used for the cable to be inserted. The plurality of water-blocking particles are arranged in the accommodating cavity.

10. The photovoltaic connector according to claim 9, characterized in that: The base is connected to the downstream side of the first sealing member in a direction from the inside of the penetration channel to the outside of the side where the connecting member is located.

11. The photovoltaic connector according to claim 10, characterized in that: The base and the first sealing member are an integrally formed structure.

12. The photovoltaic connector according to claim 10, characterized in that: An opening is provided on a side of the base body facing away from the first sealing component, and the opening is communicated with the accommodating cavity.

13. The photovoltaic connector according to claim 12, characterized in that: The connecting piece is configured as a nut; in a direction from the inside of the through-channel to the outside of the side where the connecting piece is located, a threaded section and a fitting section are sequentially provided in the connecting piece; 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 matching section is used to accommodate at least a portion of the base.

14. The photovoltaic connector according to claim 13, characterized in that: The target joint further includes a second seal; The second sealing member is arranged in the penetration channel, and the second sealing member is located between the end wall of the connecting member and the base.

15. The photovoltaic connector according to claim 9, characterized in that: The material of the water-blocking particles includes silica gel, aluminum oxide, polyacrylamide or polyvinyl alcohol.

16. The photovoltaic connector according to claim 9, characterized in that: In a direction from the inside of the through-channel toward the outside of the side where the connecting piece is located, the cross-sectional area of ​​the accommodating cavity gradually decreases or increases; The cross section of the accommodating cavity is perpendicular to a direction pointing from the inside of the penetration channel to the outside of the side where the connecting member is located.

17. The photovoltaic connector according to any one of claims 1 to 7, characterized in that: The two connectors are respectively a first connector and a second connector; The first connector includes a first connector body and a plurality of buckle parts provided at one end of the first connector body. The second connector includes a second connector body. A plurality of buckle holes are provided at one end of the second connector body. The plurality of buckle parts and the plurality of buckle holes are buckled in a one-to-one correspondence. When the first joint is a target joint, the first joint body is the main body; when the second joint is a target joint, the second joint body is the main body; In which, the photovoltaic connector also includes a third seal, which is matched with the multiple snap 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 seal being sleeved outside the multiple snap parts, or the third seal being plugged into and matched with the multiple snap parts.

18. The photovoltaic connector according to claim 17, characterized in that: The third sealing member is elastic; when the first joint body and the second joint body are connected, the third sealing member is in a stretched state.

19. The photovoltaic connector according to claim 17, characterized in that: The photovoltaic connector further includes a fourth seal, the fourth seal being provided 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 member is elastic and is provided with through holes corresponding to the multiple buckle portions one by one. When the first joint body and the second joint body are connected, the fourth sealing member is in a stretched state.

20. The photovoltaic connector according to claim 17, wherein: The first connector further comprises a plug-in portion provided at one end of the first connector body, the plug-in portion and the plurality of buckle portions are located at the same end of the first connector body, and the plurality of buckle portions are arranged around the plug-in portion; One end of the second connector body is further provided with an insertion hole, the insertion hole and the plurality of clamping holes are located at the same end of the second connector body, the plurality of clamping holes are arranged around the insertion hole, and the insertion hole and the plug-in portion are plug-fitted; The photovoltaic connector further includes a fifth sealing member, which is sleeved on the plug-in 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.

21. A photovoltaic module, characterized in that: It comprises a photovoltaic cell assembly and a photovoltaic junction box installed on the photovoltaic cell assembly, wherein the photovoltaic junction box comprises the photovoltaic connector according to any one of claims 1 to 20.

22. A photovoltaic system, characterized in that: Includes the photovoltaic connector according to any one of claims 1 to 20; or includes the photovoltaic assembly according to claim 21.

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