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 at least comprises two connectors connected through plug-in connection, at least one of the two connectors is configured as a target connector, a first sealing element in the target connector is respectively screwed with a main body and a connecting piece, due to the overlapping projection of the main body and the first sealing element on a reference surface and the overlapping projection of the connecting piece and the first sealing element on the reference surface at least partially overlapping, at least part of the first sealing element can be regarded as being clamped between the main body and the connecting piece. In the structure, the sealing performance of the connecting position of the main body and the connecting piece is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a photovoltaic connector, a photovoltaic module and a photovoltaic system. BACKGROUND

[0002] The connector is an important device for realizing the power conduction of different devices. In the solar power generation scene, the power transmission between photovoltaic modules mainly relies on the plug-in connector to realize. However, due to the fact that the photovoltaic modules are often placed in outdoor environment, they face many challenges. The strong wind in the outdoor or the sea wave on the sea will continuously act on the connector, so that the sealing member inside the connector bears a large external force. The sealing member is easy to deform, displace, and even break under the action of these external forces, so that its sealing performance will fail. At this time, the rain, moisture and dust in the outside world will enter the inside of the connector, affecting the safety and reliability of the entire photovoltaic system. SUMMARY

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

[0004] According to one aspect of the present application, the embodiments of the present application provide a photovoltaic connector, comprising two connectors connected by plug-in, at least one of the two connectors is a target connector; the target connector comprises a main body, a connecting piece and a first sealing member. One end of the main body is connected to the other connector by plug-in, one of the other end of the main body and the connecting piece is provided with a first internal thread, the other of the other end of the main body and the connecting piece is provided with a first external thread; the first sealing member is provided with 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 are matched, and the second external thread and the first internal thread are matched, so that the first sealing member is threadedly connected to the main body and the connecting piece respectively; wherein, the overlapping projection of the main body and the first sealing member on a reference surface, and the overlapping projection of the connecting piece and the first sealing member on the reference surface, at least partially overlap; the reference surface is parallel to the axis direction of the through channel; the inside of the main body, the inside of the connecting piece and the through channel together define a passing channel for passing a cable.

[0005] In some embodiments, 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 are snap-fitted.

[0006] 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 arranged on the crest of the second internal thread, and the first recess is arranged on the root of the first external thread.

[0007] In some embodiments, 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 are in a snap-fit.

[0008] In some embodiments, the second external thread is provided with a second recess, and the first internal thread is provided with a second protrusion; the second recess is arranged on a crest of the second external thread, and the second protrusion is arranged on a root of the first internal thread.

[0009] In some embodiments, 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 are in a snap-fit; 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 are in a snap-fit.

[0010] In some embodiments, when the second internal thread is provided with a first protrusion and the first external thread is provided with a first recess, the first internal thread is provided with a second protrusion, and the second external thread is provided with a second recess; the second recess is arranged corresponding to the first protrusion, and the first protrusion is formed by the second recess being recessed; or, when the second internal thread is provided with a first recess and the first external thread is provided with a first protrusion, the first internal thread is provided with a second recess, and the second external thread is provided with a second protrusion; the first recess is arranged corresponding to the second protrusion, and the second protrusion is formed by the first recess being recessed.

[0011] In some embodiments, the second internal thread is right-handed, and the second external thread is left-handed.

[0012] In some embodiments, the target joint further comprises a water-blocking component arranged in the penetrating channel; the water-blocking component comprises a base body and a plurality of water-blocking particles; the base body has a receiving cavity penetratingly arranged and communicating with the penetrating channel, the receiving cavity being used for penetrating the cable, and the plurality of water-blocking particles are arranged in the receiving cavity.

[0013] In some embodiments, in a direction from an inside of the penetrating channel to an outside of a side where the connecting piece is located, the base body is connected to a downstream side of the first sealing piece.

[0014] In some embodiments, the base body and the first sealing piece are integrally formed.

[0015] In some embodiments, a side of the base body away from the first sealing piece is provided with an opening, and the opening communicates with the receiving cavity.

[0016] In some embodiments, the connecting piece is configured as a screw cap; a threaded segment and a matching segment are sequentially arranged in the connecting piece in a direction from inside of the through channel to outside of the side where the connecting piece is located; the threaded segment is provided with a first internal thread, and the other end of the main body is provided with a first external thread; and the matching segment is configured to accommodate at least part of the base body.

[0017] In some embodiments, the target joint further comprises a second sealing member; the second sealing member is arranged in the through channel and located between the end wall of the connecting piece and the base body.

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

[0019] In some embodiments, in a direction from inside of the through channel to outside of the side where the connecting piece is located, the cross-sectional area of the accommodating cavity gradually decreases or gradually increases; and the cross section of the accommodating cavity is perpendicular to the direction from inside of the through channel to outside of the side where the connecting piece is located.

[0020] In some embodiments, the two joints are respectively a first joint and a second joint; the first joint comprises a first joint body and a plurality of buckle portions arranged at one end of the first joint body, and the second joint comprises a second joint body provided with a plurality of buckle holes at one end; the plurality of buckle portions and the plurality of buckle holes are one-to-one buckling matched; when the first joint is the target joint, the first joint body is the main body; when the second joint is the target joint, the second joint body is the main body; wherein the photovoltaic connector further comprises a third sealing member, which is matched to the plurality of buckle portions in a preset manner to seal between the first joint body and the second joint body when the first joint body and the second joint body are connected; the preset manner comprises that the third sealing member is sleeved outside the plurality of buckle portions, or the third sealing member is inserted and matched with the plurality of buckle portions.

[0021] In some embodiments, the third sealing member is elastic; and 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 further comprises a fourth sealing member arranged at one end of the second joint body to seal between the first joint body and the second joint body when the first joint body and the second joint body are connected; the fourth sealing member is elastic, and the fourth sealing member is provided with through holes corresponding to the plurality of buckle portions; and when the first joint body and the second joint body are connected, the fourth sealing member is in a stretched state.

[0023] In some embodiments, the first connector further comprises a plug portion arranged at one end of the first connector body, the plug portion and the plurality of buckle portions being arranged at the same end of the first connector body; one end of the second connector body is further provided with a socket, the socket and the plurality of buckle holes being arranged at the same end of the second connector body, the plurality of buckle holes being arranged around the socket, the socket and the plug portion being plug-fitted; wherein the photovoltaic connector further comprises a fifth sealing member, the fifth sealing member being sleeved on the plug portion to be sealed 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, the embodiments of the present application provide a photovoltaic module, comprising a photovoltaic cell module and a photovoltaic junction box mounted on the photovoltaic cell module, the photovoltaic junction box comprising the photovoltaic connector in any of the above embodiments.

[0025] According to still another aspect of the present application, the embodiments of the present application provide a photovoltaic system, comprising the photovoltaic connector in any of the above embodiments; or comprising the photovoltaic module in any of the above embodiments.

[0026] In the photovoltaic connector, the photovoltaic module and the photovoltaic system described above, the photovoltaic connector at least comprises two connectors connected by plug-fitting, at least one of the two connectors is configured as a target connector, the first sealing member in the target connector is respectively screwed with the main body and the connecting member, due to the overlapping projection of the main body and the first sealing member on the reference surface, and the overlapping projection of the connecting member and the first sealing member on the reference surface at least partially overlaps, so that at least part of the first sealing member can be regarded as being clamped between the main body and the connecting member. In such a structure, the interface formed between the first sealing member and the main body and the interface formed between the first sealing member and the connecting member constitute multiple seals, thereby improving the sealing performance of the connection between the main body and the connecting member. Since the main body and the connecting member are screwed by means of the first sealing member, in the scene of being subjected to vibration or impact, the friction or elastic deformation of the mating surfaces between the first sealing member and the main body and between the first sealing member and the connecting member can be utilized for buffering, forming a dispersed load of hierarchical transmission, so that the failure risk under complex working conditions such as dynamic load and temperature difference fluctuation can be reduced, thereby further facilitating the improvement of the sealing performance of the connection between the main body and the connecting member.

[0027] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter in the description of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the implementations. The accompanying drawings are merely illustrative of the implementations and do not limit the present application. Furthermore, like reference numerals are used to designate throughout the accompanying drawings the same or similar components. In the drawings:

[0029] Figure 1 A schematic view of a photovoltaic connector in some embodiments of the present application;

[0030] Figure 2 A schematic view of a partially exploded photovoltaic connector in some embodiments of the present application;

[0031] Figure 3 A schematic view of a partially exploded first joint in some embodiments of the present application;

[0032] Figure 4 A schematic view of a partially exploded second joint in some embodiments of the present application;

[0033] Figure 5 A schematic view of a partially exploded connector in some embodiments of the present application;

[0034] Figure 6 A schematic view of a first seal in some embodiments of the present application;

[0035] Figure 7 A schematic view of a cross-section of a first seal in some embodiments of the present application;

[0036] Figure 8 A schematic view of a cross-section of a partially exploded body, connector, and first seal in some embodiments of the present application;

[0037] Figure 9 A schematic view of a projection relationship of a body, connector, and first seal in some embodiments of the present application;

[0038] Figure 10 A schematic view of a photovoltaic connector in some other embodiments of the present application;

[0039] Figure 11 A schematic view of a partially exploded photovoltaic connector in some other embodiments of the present application;

[0040] Figure 12 A schematic view of a partially exploded photovoltaic connector in some other embodiments of the present application;

[0041] Figure 13 A schematic view of a cross-section of a partially exploded body, connector, first seal, and water-blocking component in some other embodiments of the present application;

[0042] Figure 14 Schematic view of sectional structure for the first seal and the water blocking component in some embodiments of the present application;

[0043] Figure 15 Schematic view of sectional structure for the first seal and the water blocking component in some embodiments of the present application;

[0044] Figure 16 Schematic view of structure for the first joint and the second joint not connected in some embodiments of the present application;

[0045] Figure 17 Schematic view of sectional structure for the first joint and the second joint connected in some embodiments of the present application; Figure 12 Schematic view of local enlarged structure at G in some embodiments of the present application;

[0046] Figure 18 Schematic view of structure for the third seal in some embodiments of the present application;

[0047] Figure 19 Schematic view of structure for the fourth seal in some embodiments of the present application;

[0048] Figure 20 Schematic view of sectional structure for the first joint and the second joint connected in some embodiments of the present application;

[0049] Figure 21 Schematic view of structure for the photovoltaic module in some embodiments of the present application.

[0050] Explanation of reference signs:

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

[0052] Photovoltaic connector 100a, 100b;

[0053] First joint 110a, 110c, first joint body 111a, buckle portion 116a, insertion portion 117a, insertion sleeve 118a, second joint 110b, 110d, second joint body 111b, buckle hole k2, insertion hole k5, insertion pin 118b, target joint J1, J2, main body 111, connecting piece 112a, 112b, threaded section 1121, matching section 1122, end wall 1123, first seal 113, through passage 1131, water blocking component 114a, 114b, base 1141a, 1141b, accommodating cavity Q, opening k1, water blocking particle 1142, second seal 115;

[0054] Third seal 120, insertion hole k3;

[0055] Fourth seal 130, through hole k4;

[0056] Fifth seal 140a, 140b

[0057] First internal thread 1101, first external thread 1102, second internal thread 1132, second external thread 1133, first protrusion 1103, first recess 1104, second protrusion 1105, second recess 1106

[0058] Cable 200

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

[0060] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0061] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0063] In the present application, unless specifically defined otherwise, if there is a description of "mounting", "connecting", "connecting", "fixing" and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the present application, unless specifically defined otherwise, if there is a description of "mounting", "connecting", "connecting", "fixing" and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0066] According to some embodiments of the present application, please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a photovoltaic connector 100a in some embodiments of the present application, Figure 2 is a partially exploded structural schematic diagram of a photovoltaic connector 100a in some embodiments of the present application, the present application provides a photovoltaic connector 100a, which includes two connectors connected by plugging, at least one of the two connectors is a target connector J1.

[0067] The two connectors are a first connector 110a and a second connector 110b. The two connectors are connected by plugging, that is, one of the connectors is a male connector and the other is a female connector. In the present application, please refer to Figure 1 and Figure 2, the first joint 110a is a male joint, and the second joint 110b is a female joint. The first joint 110a and / or the second joint 110b is the target joint J1. In the case that the first joint 110a is the target joint J1, the first joint 110a is a male joint, and the second joint 110b is a female joint. In the case that the second joint 110b is the target joint J1, the first joint 110a is a female joint, and the second joint 110b is a male joint. Figure 1 and Figure 2 For example, the first joint 110a and the second joint 110b are both the target joint J1.

[0068] For example, the first joint 110a and the second joint 110b are both the target joint J1. Figures 3 to 8 , Figure 3 is a partial structure diagram of the first joint 110a in some embodiments of the present application, Figure 4 is a partial structure diagram of the second joint 110b in some embodiments of the present application, Figure 5 is a partial cross-sectional structure diagram of the connecting piece 112a in some embodiments of the present application, Figure 6 is a structure diagram of the first sealing piece 113 in some embodiments of the present application, Figure 7 is a cross-sectional structure diagram of the first sealing piece 113 in some embodiments of the present application, Figure 8 is a cross-sectional structure diagram of the partial structure of the main body 111, the connecting piece 112a and the first sealing piece 113 cooperating with each other in some embodiments of the present application. The target joint J1 includes the main body 111, the connecting piece 112a and the first sealing piece 113. One end of the main body 111 is connected to the other joint through joint insertion, and the other end of the main body 111 is provided with a first internal thread 1101 on one of the main body 111 and the connecting piece 112a, and is provided with a first external thread 1102 on the other of the main body 111 and the connecting piece 112a. The other joint is the joint other than the joint where the main body 111 is located. The first sealing piece 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 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 piece 113 is threadedly connected to the main body 111 and the connecting piece 112a, respectively.

[0069] For example, the first joint 110a and the second joint 110b are both the target joint J1. Figure 3 and Figure 4, the first joint 110a includes a first joint body 111a, and the second joint 110b includes a second joint body 111b. When the first joint 110a is the target joint J1, the first joint body 111a is the main body 111. When the second joint 110b is the target joint J1, the second joint body 111b is the main body 111. It should be noted that when the first joint 110a and the second joint 110b are both the target joint J1, it means that the first joint 110a and the second joint 110b are both different in structure at the joint connection, and the rest of the structures are the same. That is, the first joint body 111a and the second joint body 111b are different in structure at the end of the joint fit, and the "fitting mode of the first joint body 111a and the connecting piece 112a and the first sealing piece 113" is the same as the "fitting mode of the second joint body 111b and the connecting piece 112a and the first sealing piece 113".

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

[0071] For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 8 For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 9 , Figure 9 For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 2 In the main body 111, the connecting piece 112a, and the first sealing piece 113 of some embodiments of the present application, the overlapping projection of the main body 111 and the first sealing piece 113 on the reference surface E, and the overlapping projection of the connecting piece 112a and the first sealing piece 113 on the reference surface E, at least partially overlap. The reference surface E is parallel to the axis direction of the through channel 1131. The inside of the main body 111, the inside of the connecting piece 112a, and the through channel 1131 together define a through channel for threading the cable 200. In

[0072] For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 8 For example, the first joint body 111a and the second joint body 111b are respectively provided with a first external thread 1102. Figure 9 ​For example, the overlapping projection of the body 111 and the first seal 113 on the reference surface E is a first projection y1, the overlapping projection of the connecting piece 112a and the first seal 113 on the reference surface E is a second projection y2, and the first projection y1 and the second projection y2 completely overlap. That is, in combination with the above description Figure 5 and Figure 8 When the first internal thread 1101 is arranged on the connecting piece 112a, the first seal 113 is located in the connecting piece 112a, and the part of the body 111 connected with the first seal 113 is also located in the connecting piece 112a. When the first internal thread 1101 is arranged on the body 111, it can be understood with reference, and will not be repeated here.

[0073] 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 respectively threadedly connected with the body 111 and the connecting piece 112a, and due to the overlapping projection of the body 111 and the first seal 113 on the reference surface E and the overlapping projection of the connecting piece 112a and the first seal 113 on the reference surface E at least partially overlap, at least part of the first seal 113 can be regarded as being clamped between the body 111 and the connecting piece 112a. In such a structure, the interface formed between the first seal 113 and the body 111 and the interface formed between the first seal 113 and the connecting piece 112a constitute a multiple seal, thereby improving the sealing performance of the connection between the body 111 and the connecting piece 112a. Since the body 111 and the connecting piece 112a are threadedly connected by means of the first seal 113, in the case of vibration or impact, etc., the friction or elastic deformation of the mating surfaces between the first seal 113 and the body 111 and between the first seal 113 and the connecting piece 112a can be used for buffering, forming a dispersed load of staged transmission, thereby reducing the failure risk under complex working conditions such as dynamic load and temperature difference fluctuation, and further improving the sealing performance of the connection between the body 111 and the connecting piece 112a.

[0074] According to some embodiments of the present 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 case where the second internal thread 1132 is provided with the first protrusion 1103 is shown, and Figure 3 and Figure 4For example, the first external thread 1102 is provided with the first recess 1104.

[0076] The first protrusions 1103 and the first recesses 1104 can be provided with one, two, four or other numbers, which are not specifically limited here. When the first protrusions 1103 and the first recesses 1104 are provided with multiple, all the first protrusions 1103 can be arranged in an axial direction of the corresponding thread structure, or arranged in a circumferential direction of the corresponding thread structure, or distributed on the corresponding thread structure, and the first recesses 1104 are arranged in cooperation with the first protrusions 1103, which are not specifically limited here.

[0077] In this way, by providing the first protrusions 1103 and the first recesses 1104, the first protrusions 1103 and the first recesses 1104 are connected by clamping, and a retreat prevention structure is formed. When the first external thread 1102 and the second internal thread 1132 are subjected to vibration, impact or axial force, the relative rotation of the first external thread 1102 and the second internal thread 1132 can be directly prevented by the physical limiting of the first protrusions 1103 and the first recesses 1104, so that the cooperation of the first external thread 1102 and the second internal thread 1132 can be more closely, and the connection reliability and sealing reliability can be improved. In addition, since the first protrusions 1103 and the first recesses 1104 are provided on the corresponding thread structure, it is also convenient for manufacturing.

[0078] According to some embodiments of the present application, please continue to refer to Figures 2 to 4 , Figure 6 and Figure 7 , the second internal thread 1132 is provided with the first protrusion 1103, and the first external thread 1102 is provided with the first recess 1104. Among them, the first protrusion 1103 is arranged on the crest of the second internal thread 1132, and the first recess 1104 is arranged on the root of the first external thread 1102.

[0079] The crest refers to the top end of the protruding part in the thread profile. The root refers to the bottom of the recessed part between two adjacent crests in the thread profile.

[0080] The tooth crest of the second internal thread 1132 and the tooth root of the first external thread 1102 are one of the main force contact surfaces. Under the action of axial load, force is transmitted through the tooth surface. The first protrusion 1103 is arranged on the tooth crest of the second internal thread 1132, and the first recess 1104 is arranged on the tooth root of the first external thread 1102, so that the clamping structure formed by the clamping of the first protrusion 1103 and the first recess 1104 directly acts on the force concentration area. When the thread has a loosening tendency, the clamping structure can directly block the relative rotation from the force transmission path, and the blocking is more timely. Compared with arranging the first protrusion 1103 and the first recess 1104 on the inclined surfaces of the corresponding thread structures, the complete contact area of the inclined surfaces can be further maintained, thereby facilitating the improvement of the load capacity of the thread. Therefore, by arranging the positions of the first protrusion 1103 and the first recess 1104, more accurate locking and more stable anti-loosening can be achieved while considering the strength of the thread and facilitating processing.

[0081] According to some embodiments of the present application, please continue to refer to Figure 2 、 Figures 5 to 7 , the second protrusion 1105 is arranged on one of the second external thread 1133 and the first internal thread 1101, and the second recess 1106 is arranged on the other of the second external thread 1133 and the first internal thread 1101. The second protrusion 1105 and the second recess 1106 are clamped and matched.

[0082] The related embodiments of the second protrusion 1105 and the second recess 1106 can be understood with reference to the related embodiments of the first protrusion 1103 and the first recess 1104 described above, which will not be repeated here.

[0083] In this way, by arranging the second protrusion 1105 and the second recess 1106, the second protrusion 1105 and the second recess 1106 are clamped and matched to form a retreat-stop structure. When the second external thread 1133 and the first internal thread 1101 are subjected to vibration, impact or axial force, the relative rotation of the second external thread 1133 and the first internal thread 1101 can be directly prevented through the physical limiting of the second protrusion 1105 and the second recess 1106, so that the cooperation of the second external thread 1133 and the first internal thread 1101 is more compact, thereby improving the connection reliability and sealing reliability. In addition, since the second protrusion 1105 and the second recess 1106 are arranged on the corresponding thread structures, they are also easy to manufacture.

[0084] According to some embodiments of the present 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 arranged on the crest of the second outer thread 1133, and the second protrusion 1105 is arranged on the root of the first inner thread 1101.

[0085] The second protrusion 1105 and the second recess 1106 can be understood with reference to the above-mentioned embodiments of the first protrusion 1103 and the first recess 1104, and details are not repeated here.

[0086] The second recess 1106 is arranged on the crest of the second outer thread 1133, and the second protrusion 1105 is arranged on the root of the first inner thread 1101, so that the second protrusion 1105 and the second recess 1106 form a clamping structure that directly acts on the stress concentration area. When the thread has a loosening trend, 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 surfaces of the corresponding thread structures, the complete contact area of the inclined surfaces can be further maintained, thereby facilitating the improvement of the carrying capacity of the thread. Therefore, by arranging the second protrusion 1105 and the second recess 1106, the strength of the thread and the convenience of processing can be considered, and more accurate locking and more stable anti-loosening can be achieved.

[0087] According to some embodiments of the present application, please continue to refer to Figures 2 to 7 The second inner thread 1132 and the first outer thread 1102 are provided with a first protrusion 1103 and a first recess 1104, respectively, and the first protrusion 1103 and the first recess 1104 are clamped and matched. The second outer thread 1133 and the first inner thread 1101 are provided with a second protrusion 1105 and a second recess 1106, respectively, and the second protrusion 1105 and the second recess 1106 are clamped and matched.

[0088] By arranging the corresponding matching recesses and protrusions on the interface between the first sealing element 113 and the main body 111 and the interface between the first sealing element 113 and the connecting element 112a, a multiple anti-backout structure is formed. Since at least part of the first sealing element 113 can be regarded as being clamped between the main body 111 and the connecting element 112a, in combination with the above-mentioned Figure 8, through the cooperation of the corresponding thread structure, the first sealing member 113, the main body 111 and the connecting member 112a are roughly integrated, when there is a loose trend between the second inner thread 1132 and the first outer thread 1102 or between the second outer thread 1133 and the first inner thread 1101, the clamping structure formed by the first protrusion 1103 and the first recess 1104 can interact with the clamping structure formed by the second protrusion 1105 and the second recess 1106, and the tightness and stability of the connection of the first sealing member 113, the main body 111 and the connecting member 112a are improved.

[0089] According to some embodiments of the present application, please continue to refer to Figures 2 to 7 , when the first protrusion 1103 is arranged on the second inner thread 1132, the first recess 1104 is arranged on the first outer thread 1102, the second protrusion 1105 is arranged on the first inner thread 1101, and the second recess 1106 is arranged on the second outer thread 1133, the second recess 1106 is arranged correspondingly with the first protrusion 1103, and the first protrusion 1103 is formed by the second recess 1106; or, when the first recess 1104 is arranged on the second inner thread 1132, the first protrusion 1103 is arranged on the first outer thread 1102, the second recess 1106 is arranged on the first inner thread 1101, and the second protrusion 1105 is arranged on the second outer thread 1133, the first recess 1104 is arranged correspondingly with the second protrusion 1105, and the second protrusion 1105 is formed by the first recess 1104.

[0090] For example, the first inner thread 1101 is provided with the second protrusion 1105, the first outer thread 1102 is provided with the first recess 1104, the second inner thread 1132 is provided with the first protrusion 1103, and the second outer thread 1133 is provided with the second recess 1106. Figures 2 to 7 For example, the first inner thread 1101 is provided with the second protrusion 1105, the first outer thread 1102 is provided with the first recess 1104, the second inner thread 1132 is provided with the first protrusion 1103, and the second outer thread 1133 is provided with the second recess 1106.

[0091] Since the first protrusion 1103 is recessed by the second recess 1106, or the second protrusion 1105 is recessed by the first recess 1104, the inner wall and the outer wall of the first seal 113 form a complementary structure inside and outside, and when any one of the first seal 113, the main body 111 and the connecting piece 112a is subjected to a force, the concave-convex structure on the inner wall and the outer wall of the first seal 113 forms a structure that supports each other, thereby improving the anti-deformation ability of the first seal 113, the main body 111 and the connecting piece 112a as a whole, and further improving the stability, sealing and reliability of the overall structure. At the same time, by recessing the protrusions corresponding to the recesses, the assembly complexity can be reduced, and the installation is facilitated. In addition, in combination with the above-mentioned some embodiments, the corresponding concave-convex parts are arranged in the tooth base and the tooth top, which can further improve the stability, sealing and reliability of the overall structure.

[0092] According to some embodiments of the present 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 rotation direction of the second internal thread 1132 is right-handed, and the rotation direction of the second external thread 1133 is left-handed; or the rotation direction of the second internal thread 1132 is left-handed, and the rotation direction of the second external thread 1133 is right-handed. 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] In combination with the above-mentioned some embodiments, please refer to Figures 2 to 8 , taking the rotation direction of the second internal thread 1132 as left-handed and the rotation direction of the second external thread 1133 as right-handed as an example, when the connecting piece 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 torque directions of the clockwise torque and the counterclockwise torque are opposite, and they 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 opposite to the rotation direction of the second external thread 1133, when there is a loosening tendency, a reverse constraint can be formed. In combination with the locking structure formed by the corresponding protrusions and recesses mentioned above, the thread rotation direction opposite to the loosening constraint plus the physical clamping of the corresponding recesses and protrusions forms a structure that improves the connection reliability in multiple ways. When the photovoltaic connector 100a is in a complex force environment, it is still beneficial to improve the sealing, reliability and stability of the photovoltaic connector 100a.

[0095] According to some embodiments of the present application, please refer to Figures 10 to 13 , Figure 10 is a structural schematic diagram of a photovoltaic connector 100b in some other embodiments of the present application,Figure 11 Fig. 6 is a partial exploded view of a photovoltaic connector 100b according to some embodiments of the present application, Figure 12 Fig. 7 is a partial cross-sectional view of a photovoltaic connector 100b according to some embodiments of the present application, Figure 13 Fig. 8 is a cross-sectional view of a portion of a main body 111, a connector 112b, a first seal 113, and a water-blocking component 114a cooperating with each other according to some embodiments of the present application. The target joint J2 also includes a water-blocking component 114a disposed in 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 disposed through the base 1141a and communicating with the through channel. The receiving cavity Q is configured to receive the cable 200. The plurality of water-blocking particles 1142 are disposed in the receiving cavity Q.

[0096] For example, Figure 10 For example, the first joint 110c and the second joint 110d are both target joints J2. The target joint J1 has the same structure as the target joint J2, and thus the description of the target joint J1 is not repeated here.

[0097] The water-blocking particles 1142 are configured to prevent water and moisture from entering the interior of the cable 200, thereby protecting the cable 200. The water-blocking particles 1142 are in the form of particles.

[0098] When the cable 200 passes through the receiving cavity Q, the water-blocking particles 1142 fill the space around the portion of the cable 200 in the receiving cavity Q, and the gaps between the water-blocking particles 1142 form a tortuous path. When water vapor enters the receiving cavity Q, the water-blocking particles 1142 can absorb the water, and the tortuous path can limit the water vapor from further penetrating along the longitudinal direction of the cable 200. When the photovoltaic connector is subjected to an external force, the gaps between the water-blocking particles 1142 can act as a buffer space. The stress can be adjusted and dispersed by the slight displacement and stacking of the water-blocking particles 1142. The stability of the overall structure can be improved, and the water-blocking particles 1142 can change along with the shape of the cable 200, so that the water-blocking particles 1142 can maintain contact with the cable 200, thereby further protecting the cable 200.

[0099] According to some embodiments of the present application, please continue to refer to Figures 11 to 13 In a direction from the interior of the through channel to the exterior of the side where the connector 112b is located, the base 1141a is connected to the downstream side of the first seal 113.

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

[0101] According to some embodiments of the present application, please continue to refer to Figures 11 to 13 , and in combination with referring to Figure 14 , Figure 14 is a schematic view of the cross-sectional structure of the first seal 113 and the water blocking component 114a in some embodiments of the present application. The base body 1141a and the first seal 113 are integrally formed.

[0102] Since the base body 1141a and the first seal 113 are integrally formed, there is no physical splicing interface between the base body 1141a and the first seal 113, thereby reducing the gap problem caused by assembly error from the structure, forming a continuous and complete sealing structure, and further improving the sealing effect. At the same time, by integrally forming the base body 1141a and the first seal 113, the base body 1141a and the first seal 113 become a whole with more unified mechanical properties, thereby improving the structural rigidity and anti-deformation ability, and further reducing the failure risk caused by the separation of the base body 1141a and the first seal 113. In addition, the manufacturing process can be simplified and the manufacturing efficiency can be improved.

[0103] According to some embodiments of the present application, please continue to refer to Figures 11 to 14 , the side of the base body 1141a away from the first seal 113 is provided with an opening k1, and the opening k1 communicates with the accommodation cavity Q.

[0104] In this way, it is not only beneficial to assemble the cable 200, but also convenient to directly abut the side of the base body 1141a away from the first seal 113 to the connecting piece 112b, so that the deformation of the base body 1141a can be used to more tightly wrap the part of the cable 200 located in the accommodation cavity Q during the assembly process, thereby improving the water blocking effect.

[0105] According to some embodiments of the present application, please continue to refer to Figures 11 to 14The connecting piece 112b is configured as a screw cap. In the connecting piece 112b, a threaded segment 1121 and a matching segment 1122 are sequentially arranged from inside to outside of the connecting piece 112b.

[0106] In this way, by arranging the matching segment 1122 in the connecting piece 112b, the water-blocking component 114a can be installed, and the matching segment 1122 can be matched to the deformation of the base body 1141a to achieve a more tightly matched structure, thereby improving the sealing and water-blocking performance.

[0107] According to some embodiments of the present 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 arranged in the through channel, and the second sealing member 115 is located between the end wall 1123 of the connecting piece 112b and the base body 1141a.

[0108] For example, the second sealing member 115 is a ring-shaped component.

[0109] In this way, by arranging the second sealing member 115 between the end wall 1123 of the connecting piece 112b and the base body 1141a, the water-blocking performance is further improved. In addition, since the base body 1141a can directly abut against the second sealing member 115, the second sealing member 115 can be matched to the deformation of the base body 1141a to improve the sealing between the second sealing member 115 and the base.

[0110] Of course, in the aforementioned Figure 1 and Figure 2 , the second sealing member 115 can also be arranged between the first sealing member 113 and the end wall of the connecting piece 112a.

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

[0112] Silica gel has good weather resistance, stability, and elastic deformation capability. In this way, while blocking water, the silica gel can be deformed to more tightly wrap the cable 200 and improve the tightness between the corresponding components, thereby improving the sealing performance.

[0113] Alumina has good strength, wear resistance, and stability. In this way, while blocking water, the overall structure can be improved in strength and stability.

[0114] The polyacrylamide has high water absorption and swelling property. Thus, the water blocking particles 1142 and the cable 200 can be tightly connected while water blocking.

[0115] The polyvinyl alcohol has controllable water absorption and film forming property, and has dual effects of swelling sealing and blocking water permeation.

[0116] Thus, the material of the water blocking particles 1142 can be flexibly selected, which is not specifically limited herein.

[0117] According to some embodiments of the present application, please refer to Figure 15 , Figure 15 For the cross-sectional structure diagram of the first seal 113 and the water blocking component 114b in some embodiments of the present application, the cross-sectional area of the accommodating cavity Q formed by the base 1141b gradually decreases or gradually increases in the direction from the inside of the through channel to the outside of the side where the connecting piece 112b is located. The cross section of the accommodating cavity Q is perpendicular to the direction from the inside of the through channel to the outside of the side where the connecting piece 112b is located.

[0118] Thus, when the photovoltaic connector is subjected to external force, the stress can be dispersed by the inner wall of the accommodating cavity Q of the water blocking component 114b, thereby further improving the structural reliability of the photovoltaic connector.

[0119] It should be noted that, in combination with the above Figure 13 In such a structure, through the cooperation of the second seal 115, the water blocking particles 1142, the deformation of the base 1141a, the first seal 113 and the main body 111 and the connecting piece 112b respectively, and the cooperation of the corresponding concave-convex parts shown in some embodiments described above, not only a multiple water blocking structure is formed, the water blocking path is prolonged, but also the structural stability is improved as a whole through the cooperation of each component, so that the photovoltaic connector still has better sealing performance when subjected to external force.

[0120] According to some embodiments of the present application, please continue to refer to Figure 3 , Figure 4 , and in combination with the above Figure 16 and Figure 17 , Figure 16 For the structure diagram of the first joint 110c and the second joint 110d of the photovoltaic connector 100b not connected in some embodiments of the present application, Figure 17 For Figure 12A local enlarged structure schematic view at G, two joints are a first joint 110c and a second joint 110d. The first joint 110c includes a first joint body 111a and a plurality of buckle portions 116a provided at one end of the first joint body 111a, and the second joint 110d includes a second joint body 111b provided with a plurality of buckle holes k2 at one end, and the plurality of buckle portions 116a and the plurality of buckle holes k2 are buckled and matched one by one. When the first joint 110c is the target joint J2, the first joint body 111a is the main body 111. When the second joint 110d is the target joint J2, the second joint body 111b is the main body 111. The photovoltaic connector 100b further includes a third sealing member 120, which is matched with the plurality of buckle portions 116a in a preset manner to seal between the first joint body 111a and the second joint body 111b when the first joint body 111a and the second joint body 111b are connected. The preset manner includes that the third sealing member 120 is sleeved outside the plurality of buckle portions 116a, or the third sealing member 120 is inserted and matched with the plurality of buckle portions 116a.

[0121] For example, Figure 16 and Figure 17 For example, the third sealing member 120 is inserted and matched with the plurality of buckle portions 116a. For reference, Figure 18 , Figure 18 is a structure schematic view of the third sealing member 120 in some embodiments of the present application, and the third sealing member 120 is arranged in a ring shape, and the third sealing member 120 is provided with a plurality of insertion holes k3 inserted and matched with the plurality of buckle portions 116a one by one.

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

[0123] According to some embodiments of the present application, please continue to refer to Figure 3 , Figure 4 , Figures 16 to 18 The third sealing member 120 has elasticity. In the case that 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 buckle portion 116a has a certain elasticity, when the third sealing member 120 is matched with the buckle portion 116a, the elasticity of the buckle portion 116a can be used to make the third sealing member 120 more closely matched 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 the present application, please continue to refer to Figure 11 ,Figure 17 and in combination with reference to Figure 19 , Figure 19 Fig. 4 is a schematic view of a structure of a fourth seal 130 in some embodiments of the present application. The photovoltaic connector 100b further comprises the fourth seal 130, which is arranged at one end of the second connector body 111b to be sealed 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 the fourth seal 130 is provided with through holes k4 corresponding to the plurality of buckle portions 116a. In the case where 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 buckle portion 116a has a certain elasticity, when the fourth seal 130 is matched with the buckle portion 116a, the elasticity of the buckle portion 116a can be used to make the fourth seal 130 more closely matched between the first connector body 111a and the second connector body 111b, thereby further improving the sealing performance of the connection between the first connector body 111a and the second connector body 111b.

[0127] Thus, by arranging 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.

[0128] It should be noted that in the case shown in Figure 12 and Figure 17 , in order to illustrate the matching relationship between the buckle portion 116a and the third seal 120 and the fourth seal 130, the third seal 120 and the fourth seal 130 are not subjected to cross-sectional processing. Among them, in combination with reference to Figure 18 , in Figure 17 , the socket k3 on the third seal 120 is illustrated by a dashed line. In the case shown in the following Figure 20 , it can also be understood with reference to Figure 17 , and will not be described again.

[0129] According to some embodiments of the present application, please continue to refer to Figure 11 , Figure 12 , Figure 16 and Figure 17The first connector 110c further comprises a plug portion 117a arranged at one end of the first connector body 111a, the plug portion 117a and the plurality of buckle portions 116a are arranged at the same end of the first connector body 111a, and the plurality of buckle portions 116a are arranged around the plug portion 117a. One end of the second connector body 111b is further provided with a socket k5, the socket k5 and the plurality of buckle holes k2 are arranged at the same end of the second connector body 111b, the plurality of buckle holes k2 are arranged around the socket k5, and the socket k5 and the plug portion 117a are plug-fitted. The photovoltaic connector 100b further comprises a fifth sealing member 140a, the fifth sealing member 140a is sleeved on the plug portion 117a, so as to be sealed 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.

[0130] In this way, by arranging the fifth sealing member 140a, the sealing performance of the socket k5 can be further improved. In addition, the plurality of buckle portions 116a are arranged around the plug portion 117a, and the third sealing member 120 and / or the fourth sealing member 130 are further arranged, so as to form a sealing structure around the socket k5, and the sealing performance of the connection between the first connector body 111a and the second connector body 111b is further improved.

[0131] It should be noted that, for example, Figure 17 the fifth sealing member 140a can be arranged outside the socket k5. Of course, for example, Figure 20 the fifth sealing member 140a can be arranged inside the socket k5, which is not limited here. Figure 20 is a partially enlarged cross-sectional structure schematic view of the plug-fitted part of the first connector 110c and the second connector 110b in some other embodiments of the present application, the fifth sealing member 140b can be arranged inside the socket k5, which is not limited here. In Figure 17 and Figure 20 , the fifth sealing member is shown by solid lines and is not cross-sectioned. In the photovoltaic connector 100a shown in the above Figure 1 and Figure 2 , the buckle portion 116a, the plug portion 117a, the third sealing member 120 and the fourth sealing member 130 and other structures involved can also be understood with reference to the above, which will not be repeated here.

[0132] It can be understood that the material of the first connector body 111a and the material of the second connector body 111b are usually hard plastic, and by arranging the third sealing member 120 and / or the fourth sealing member 130 and / or the fifth sealing member, the risk of water vapor penetrating due to the gap between the first connector body 111a and the second connector body 111b can be reduced.

[0133] According to some embodiments of the present application, please continue to refer to Figure 3 , Figure 4 and Figure 12The first connector body 111a is provided with a bushing 118a, and the second connector body 111b is provided with a pin 118b. In Figure 3 and Figure 4 , the positions of the bushing 118a and the pin 118b are shown by dashed lines. When the first connector body 111a and the second connector body 111b are connected by plugging, the pin 118b is plugged into the bushing 118a. The cable 200 at the first connector 110c is connected to the bushing 118a, and the cable 200 at the second connector 110d is connected to the pin 118b. In this way, the cable 200 at the first connector 110c is electrically connected to the cable 200 at the second connector 110d.

[0134] It should be noted that in the above-mentioned Figure 12 , Figure 17 and Figure 20 , the bushing 118a and the pin 118b are shown by solid lines to facilitate the cooperation between the bushing 118a and the pin 118b.

[0135] It should be further noted that the photovoltaic connector according to some embodiments described above can be applied to the offshore photovoltaic module 10, but is not limited thereto. It can be understood that under the action of sea waves, the offshore photovoltaic module 10 will swing with the sea waves, so that each component in the photovoltaic connector is subjected to a vibration force. By using the photovoltaic connector provided in the embodiments of the present application, the first sealing member 113, the recess and the protrusion provided on the corresponding threaded structure, the threads with different rotation directions, and the water blocking component can be used to achieve multiple positioning and limiting while improving the sealing performance, thereby resisting the vibration force and improving the stability and reliability of the overall structure. At the same time, by using the first sealing member 113 to the fifth sealing member and the water blocking component, multiple water blocking structures can be obtained. For example, when water vapor enters along the gap between the cable 200 and the connector and the inner wall of the connector, the water blocking path formed by the second sealing member 115, the water blocking component, and the first sealing member 113 is longer, thereby improving the water blocking property and the sealing performance.

[0136] According to some embodiments of the present application, please refer to Figure 21 , Figure 21 for a structural diagram of the photovoltaic module 10 in some embodiments of the present application, the present application provides a photovoltaic module 10, which includes a photovoltaic cell module 11 and a photovoltaic junction box 12 mounted on the photovoltaic cell module 11, and the photovoltaic junction box 12 includes a photovoltaic connector. The photovoltaic connector is the photovoltaic connector in any of the above-mentioned 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 out of the box body, and a first connector 110a and a second connector 110b connected on 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 connected to the second connector 110b of another photovoltaic cell assembly by plug-in connection. The second connector 110b is connected to the first connector 110a of another photovoltaic cell assembly by plug-in connection. By arranging the photovoltaic connector, the electrical connection between the plurality of photovoltaic cell assemblies 11 can be achieved. It should be noted that only one photovoltaic cell assembly 11 is shown in the figure. The various embodiments of the first connector and the second connector can be understood in combination with the contents shown in some of the foregoing embodiments, which will not be repeated here. Figure 21

[0138] The photovoltaic assembly also has the advantages of the photovoltaic connector described above, which will not be repeated here.

[0139] According to some embodiments of the present application, the embodiments of the present application provide a photovoltaic system, which includes the photovoltaic connector in any of the foregoing embodiments, or includes the photovoltaic assembly in any of the foregoing embodiments.

[0140] The photovoltaic system also has the advantages of the photovoltaic connector or the photovoltaic assembly described above, which will not be repeated here.

[0141] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present application.

[0142] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.​

Claims

1. A photovoltaic connector, characterized in that, It includes two connectors that are plugged together, 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, 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; and The first sealing element has a through channel, the inner circumferential surface of the through channel has a second internal thread, and the outer circumferential surface of the through channel has a second external thread; the second internal thread and the first external thread are engaged, and the second external thread and the first internal thread are engaged, so that the first sealing element is threadedly connected to the body and the connecting element respectively; Wherein, 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, overlap at least partially; the reference plane 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 together define a through channel for cable routing.

2. 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 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 engage with each other.

3. The photovoltaic connector according to claim 2, 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.

4. The photovoltaic connector according to claim 1, characterized in that, 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 engage with each other.

5. The photovoltaic connector according to claim 4, 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.

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 protrusion, and the other of the second internal thread and the first external thread is provided with a first recess, and the first protrusion and the first recess are engaged in a snap-fit ​​relationship. 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, and the second protrusion and the second recess are engaged.

7. The photovoltaic connector according to claim 6, characterized in that, When the first protrusion is provided on the second internal thread and the first recess is provided on the first external thread, the first internal thread is provided with a second protrusion and the second external thread is provided with a second recess. The second recess is correspondingly provided with the first protrusion, and the first protrusion is formed by the recess of the second recess; or When the first recess is provided on the second internal thread and the first protrusion is provided on the first external thread, the second recess is provided on the first internal thread and the 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.

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

9. The photovoltaic connector according to any one of claims 1-7, characterized in that, The target connector also 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 has a cavity that is through-connected 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.

10. The photovoltaic connector according to claim 9, 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.

11. The photovoltaic connector according to claim 10, characterized in that, The substrate and the first sealing element are integrally formed.

12. The photovoltaic connector according to claim 10, characterized in that, The substrate has an opening on the side opposite to the first seal, and the opening communicates with the receiving cavity.

13. The photovoltaic connector according to claim 12, 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.

14. The photovoltaic connector according to claim 13, 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.

15. The photovoltaic connector according to claim 9, characterized in that, The water-blocking particles are made of materials including silicone, alumina, polyacrylamide, or polyvinyl alcohol.

16. The photovoltaic connector according to claim 9, 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.

17. The photovoltaic connector according to any one of claims 1-7, 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 a plurality of snap-fit ​​holes are provided at one end of the second connector body. The plurality of snap-fit ​​parts and the plurality of snap-fit ​​holes are engaged in a snap-fit ​​manner corresponding to each other. 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.

18. The photovoltaic connector according to claim 17, 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.

19. The photovoltaic connector according to claim 17, 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.

20. The photovoltaic connector according to claim 17, 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.

21. 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 1-20.

22. A photovoltaic system, characterized in that, It includes the photovoltaic connector as described in any one of claims 1-20; or, it includes the photovoltaic module as described in claim 21.

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