Photovoltaic connector, junction box and photovoltaic module

Abstract

The photovoltaic connector comprises a plug, a socket, a first cable, a second cable, a first protective sleeve, a second protective sleeve and a third protective sleeve, the first end of the plug is provided with a plugging part, the first cable is connected with the plugging part and penetrates through the second end of the plug, and the second cable is connected with the socket and penetrates through the third protective sleeve. The first end of the socket is provided with a butt joint part, the second cable is connected with the butt joint part and penetrates through the second end of the socket, the first cable is sleeved with the first protective sleeve and is close to the second end of the plug, and the second cable is sleeved with the second protective sleeve and is close to the second end of the socket. And the third protective sleeve at least covers the plugging part of the plug and the socket, the junction of the first protective sleeve and the plug and the junction of the second protective sleeve and the socket. According to the utility model, the first protective sleeve and the second protective sleeve can respectively eliminate the thickness difference between the first cable and the plug and between the second cable and the socket, thereby preventing the end part of the third protective sleeve from cracking after long-time use.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic connector, a junction box and a photovoltaic module. Background Art

[0002] The connector connecting to the junction box in a photovoltaic module belongs to an electrical connection component. If the quality of the connector fails, it will pose a huge safety hazard and cause huge losses. For photovoltaic modules applied at sea, the quality of the photovoltaic connector is particularly important.

[0003] However, due to the complex and changeable marine environment, the photovoltaic connector needs to face challenges in harsh environments such as high salt fog, high ultraviolet, seawater corrosion, tides, and wind and waves. These factors may cause problems such as corrosion, aging, damage, or leakage in the photovoltaic connector, reducing the stability and reliability of the photovoltaic connector, shortening the service life of the photovoltaic connector, and increasing the maintenance cost.

[0004] To solve the above problems, generally, a protective sleeve with a waterproof function is sleeved on the photovoltaic connector, and the parts of the photovoltaic connector that are prone to water ingress are sealed. During specific operation, an inner support member is used to expand the protective sleeve, the photovoltaic connector is inserted through the expanded protective sleeve, and then the inner support member is withdrawn, and the protective sleeve can tightly cover the photovoltaic connector and the part of the cable connected thereto.

[0005] However, due to the large thickness difference between the photovoltaic connector and the cable, after adopting the above sealing method, the protective sleeve cannot deform uniformly at the junction of the photovoltaic connector and the cable, resulting in a stress difference at this position of the protective sleeve, which is likely to cause the protective sleeve at this position to crack, seriously reducing the sealing performance of the photovoltaic connector.

[0006] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a photovoltaic connector, which can prevent the ends of the protective sleeves on the plug and socket of the photovoltaic connector from cracking after long-term use.

[0008] To achieve the above object, a specific embodiment of the present utility model provides a photovoltaic connector, which includes a plug, a socket, a first cable, a second cable, a first protective sleeve, a second protective sleeve and a third protective sleeve. A plug-in portion is provided at the first end of the plug. The first cable is connected to the plug-in portion and penetrates through the second end of the plug. A docking portion is provided at the first end of the socket. The second cable is connected to the docking portion and penetrates through the second end of the socket. The first protective sleeve is sleeved outside the first cable and adjacent to the second end of the plug. The second protective sleeve is sleeved outside the second cable and adjacent to the second end of the socket. The third protective sleeve is sleeved outside at least part of the plug, at least part of the socket, at least part of the first protective sleeve and at least part of the second protective sleeve, and at least covers the plug-in part of the plug and the socket, the junction of the first protective sleeve and the plug, and the junction of the second protective sleeve and the socket.

[0009] In one or more embodiments of the present utility model, the photovoltaic connector is provided with a third protective sleeve, which is sleeved outside all the plugs and all the sockets, and the third protective sleeve extends outside the first protective sleeve and the second protective sleeve.

[0010] In one or more embodiments of the present utility model, the photovoltaic connector is provided with two third protective sleeves. One of the third protective sleeves is sleeved outside all the plugs, at least part of the sockets and at least part of the first protective sleeve, and covers the junction of the first protective sleeve and the plug and the plug-in part of the plug and the socket. The other third protective sleeve is sleeved outside at least part of the sockets and at least part of the second protective sleeve, and covers the junction of the second protective sleeve and the socket.

[0011] In one or more embodiments of the present utility model, the photovoltaic connector is provided with two third protective sleeves. One of the third protective sleeves is sleeved outside at least part of the plugs and at least part of the first protective sleeve, and covers the junction of the first protective sleeve and the plug. The other third protective sleeve is sleeved outside all the sockets, at least part of the plugs and at least part of the second protective sleeve, and covers the junction of the second protective sleeve and the socket and the plug-in part of the plug and the socket.

[0012] In one or more embodiments of the present utility model, the photovoltaic connector is provided with three third protective sleeves. One of the third protective sleeves is sleeved outside at least part of the plugs and at least part of the first protective sleeve, and covers the junction of the first protective sleeve and the plug. One third protective sleeve is sleeved outside at least part of the plugs and at least part of the sockets, and covers the plug-in part of the plug and the socket. One third protective sleeve is sleeved outside at least part of the sockets and at least part of the second protective sleeve, and covers the junction of the second protective sleeve and the socket.

[0013] In one or more embodiments of the present utility model, for the third protective sleeve covering the junction of the first protective sleeve and the plug, the end away from the socket is flush with the end of the first protective sleeve away from the socket.

[0014] In one or more embodiments of the present utility model, for the third protective sleeve covering the junction of the second protective sleeve and the socket, the end away from the plug is flush with the end of the second protective sleeve away from the plug.

[0015] In one or more embodiments of the present utility model, the total thickness of the first cable and the first protective sleeve is less than or equal to the thickness of the plug.

[0016] In one or more embodiments of the present utility model, the total thickness of the second cable and the second protective sleeve is less than or equal to the thickness of the socket.

[0017] In one or more embodiments of the present utility model, a first adhesive layer is provided at the end of the first protective sleeve away from the plug.

[0018] In one or more embodiments of the present utility model, a second adhesive layer is provided at the end of the second protective sleeve away from the socket.

[0019] In one or more embodiments of the present utility model, third adhesive layers are provided at both ends of the third protective sleeve.

[0020] On the other hand, the present utility model also provides a photovoltaic connector, which includes a plug, a first cable, a first protective sleeve and a third protective sleeve. A plug-in portion is provided at the first end of the plug. The first cable is connected to the plug-in portion and penetrates through the second end of the plug. The first protective sleeve is sleeved outside at least part of the first cable and at least part of the plug, and covers the junction of the first protective sleeve and the plug.

[0021] On the other hand, the present utility model also provides a photovoltaic connector, which includes a socket, a second cable, a second protective sleeve and a third protective sleeve. A docking portion is provided at the first end of the socket. The second cable is connected to the docking portion and penetrates through the second end of the socket. The second protective sleeve is sleeved outside at least part of the second cable and at least part of the socket, and covers the junction of the second protective sleeve and the socket.

[0022] On the other hand, the present utility model also provides a junction box, which includes the photovoltaic connector in any of the above embodiments.

[0023] On the other hand, the present utility model also provides a photovoltaic module, which includes the above-mentioned junction box.

[0024] Compared with the prior art, the first protective sleeve and the second protective sleeve in the present utility model can respectively eliminate the thickness difference between the first cable and the plug and between the second cable and the socket, avoid the cracking of the end of the third protective sleeve after long-term use, improve the sealing performance of the plug and the socket, and increase the overall service life of the photovoltaic connector. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a cross-sectional structure diagram of the photovoltaic connector in the first embodiment of the present invention;

[0027] Figure 2 It is a cross-sectional structure diagram of the photovoltaic connector in the second embodiment of the present invention;

[0028] Figure 3 It is a cross-sectional structure diagram of the photovoltaic connector in the third embodiment of the present invention;

[0029] Figure 4 It is a cross-sectional structure diagram of the photovoltaic connector in the fourth embodiment of the present invention;

[0030] Figure 5 It is a cross-sectional structure diagram of the photovoltaic connector in the fifth embodiment of the present invention;

[0031] Figure 6 It is a cross-sectional structure diagram of the photovoltaic connector in the sixth embodiment of the present invention;

[0032] Figure 7 It is a cross-sectional structure diagram of the photovoltaic connector in the seventh embodiment of the present invention.

[0033] Main reference numeral descriptions: 1. Plug, 101. Insertion part, 2. Socket, 201. Docking part, 3. First cable, 4. Second cable, 5. First protective sleeve, 6. Second protective sleeve, 7. Third protective sleeve, 8. First adhesive layer, 9. Second adhesive layer, 10. Third adhesive layer, 11. Fourth adhesive layer. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1:

[0036] Refer to Figure 1As shown, the photovoltaic connector in this embodiment includes a plug 1, a socket 2, a first cable 3, a second cable 4, a first protective sleeve 5, a second protective sleeve 6, and a third protective sleeve 7.

[0037] Specifically, a plugging portion 101 is provided at the first end of the plug 1. The first cable 3 is connected to the plugging portion 101 and penetrates through the second end of the plug 1. A docking portion 201 is provided at the first end of the socket 2. The second cable 4 is connected to the docking portion 201 and penetrates through the second end of the socket 2.

[0038] Particularly, a third protective sleeve 7 is provided in the photovoltaic connector of this embodiment. The third protective sleeve 7 is sleeved outside all the plugs 1 and all the sockets 2 to cover the plugging part between the plug 1 and the socket 2.

[0039] Moreover, in order to seal the joints between the first protective sleeve 5 and the plug 1 and between the second protective sleeve 6 and the socket 2 at the same time, one end of the third protective sleeve 7 in this embodiment extends outside the first protective sleeve 5, and the other end extends outside the second protective sleeve 6 to cover the joints between the first protective sleeve 5 and the plug 1 and between the second protective sleeve 6 and the socket 2, so as to seal the joints between the first protective sleeve 5 and the plug 1 and between the second protective sleeve 6 and the socket 2.

[0040] Refer to Figure 1 As shown, a certain distance is maintained between the end of the third protective sleeve 7 away from the socket 2 and the end of the first protective sleeve 5 away from the socket 2, and a certain distance is maintained between the end of the third protective sleeve 7 away from the plug 1 and the end of the second protective sleeve 6 away from the plug 1, so that both ends of the third protective sleeve 7 can be supported by the first protective sleeve 5 and the second protective sleeve 6, facilitating the sealing treatment of both ends of the third protective sleeve 7.

[0041] Considering that the first protective sleeve 5 in this embodiment is to eliminate the thickness difference between the plug 1 and the first cable 3 as much as possible, after the first protective sleeve 5 is sleeved on the first cable 3, the total thickness of the first protective sleeve 5 and the first cable 3 is equal to the thickness of the plug 1.

[0042] In other embodiments, the total thickness of the first cable 3 and the first protective sleeve 5 may also be appropriately less than the thickness of the plug 1, but the thickness difference should still be maintained at a relatively small level, so that the total thickness of the first cable 3 and the first protective sleeve 5 can basically reach more than 90% of the thickness of the plug 1.

[0043] Those skilled in the art can understand that the cross-sections of the plug 1, the socket 2, the first cable 3, the second cable 4, the first protective sleeve 5, the second protective sleeve 6, and the third protective sleeve 7 are generally set to be circular or approximately circular. The above-mentioned thickness represents the diameter of the cross-section, and the total thickness of the first protective sleeve 5 and the first cable 3 represents the thickness of the overall structure formed by the first protective sleeve 5 and the first cable 3.

[0044] Similarly, in other embodiments, the total thickness of the second cable 4 and the second protective sleeve 6 may also be appropriately smaller than the thickness of the plug 1.

[0045] Referring to Figure 1 As shown, in order to improve the sealing performance of the outer ends of the first protective sleeve 5, the second protective sleeve 6 and the third protective sleeve 7, in this embodiment, a first adhesive layer 8 is provided at one end of the first protective sleeve 5 away from the plug 1, a second adhesive layer 9 is provided at one end of the second protective sleeve 6 away from the socket 2, and third adhesive layers 10 are provided at both ends of the third protective sleeve 7.

[0046] To form the first adhesive layer 8, the second adhesive layer 9 and the third adhesive layer 10, specifically, after the first protective sleeve 5, the second protective sleeve 6 and the third protective sleeve 7 are all sleeved on the corresponding parts, an adhesive is coated on the corresponding ends of the first protective sleeve 5, the second protective sleeve 6 and the third protective sleeve 7, and the adhesive forms the corresponding first adhesive layer 8, second adhesive layer 9 and third adhesive layer 10 after curing.

[0047] Alternatively, after the first protective sleeve 5 is sleeved on the first cable 3, an adhesive can be directly coated on one end of the first protective sleeve 5 away from the socket 2. Similarly, after the second protective sleeve 6 is sleeved on the second cable 4, an adhesive is directly coated on one end of the second protective sleeve 6 away from the plug 1. Then the third protective sleeve 7 is sleeved on the plug 1 and the socket 2, and an adhesive is coated on both ends thereof respectively.

[0048] Those skilled in the art can understand that the first adhesive layer 8, the second adhesive layer 9 and the third adhesive layer 10 formed after the adhesive cures are generally in a ring structure, and the specific shape of this ring structure is adapted to the actual shapes of the plug 1, the socket 2, the first cable 3 and the second cable 4.

[0049] Among them, in this embodiment, the inner ring of the first adhesive layer 8 is closely attached to the outside of the first cable 3, and the end is closely attached to the corresponding end face of the first protective sleeve 5. In this embodiment, the inner ring of the second adhesive layer 9 is closely attached to the outside of the second cable 4, and the end is closely attached to the corresponding end face of the second protective sleeve 6. In this embodiment, the inner ring of one of the third adhesive layers 10 is closely attached to the outside of the first protective sleeve 5, and the inner ring of the other third adhesive layer 10 is closely attached to the outside of the second protective sleeve 6, and one end of both third adhesive layers 10 is closely attached to the corresponding end face of the third protective sleeve 7.

[0050] Preferably, the thickness of the first adhesive layer 8 is set to be able to cover the entire end face of the first protective sleeve 5, the thickness of the second adhesive layer 9 is set to be able to cover the entire end face of the second protective sleeve 6, and the thickness of the third adhesive layer 10 is set to be able to cover the entire end face of the third protective sleeve 7.

[0051] In this embodiment, the adhesive material is a silicone-based or polyolefin-based adhesive. Considering the actual sizes of the plug 1, socket 2, first cable 3, and second cable 4, the thickness and width (the dimension along the axial direction of the first cable 3 and second cable 4) of the first adhesive layer 8, second adhesive layer 9, and third adhesive layer 10 formed by curing the adhesive are both greater than 1 mm.

[0052] In this embodiment, the first protective sleeve 5, second protective sleeve 6, and third protective sleeve 7 are all made of cold-shrinkable tubes, which are made of common elastic materials such as silicone rubber, ethylene propylene rubber, polyolefin, polyurethane, or polyalkane.

[0053] According to the conventional lengths of the plug 1 and socket 2, when the first protective sleeve 5 is not sleeved on the first cable 3, the length of the first protective sleeve 5 is greater than 20 mm, the thickness is 1 - 10 mm, and the ratio of the inner diameter of the first protective sleeve 5 to the outer diameter of the first cable 3 is 1:(1.01 - 5).

[0054] Similarly, when the second protective sleeve 6 is not sleeved on the second cable 4, the length of the second protective sleeve 6 is greater than 20 mm, the thickness is 1 - 10 mm, and the ratio of the inner diameter of the second protective sleeve 6 to the outer diameter of the second cable 4 is 1:(1.01 - 5).

[0055] Embodiment Two:

[0056] Refer to Figure 2 As shown, in this embodiment, the plug 1, socket 2, first cable 3, second cable 4, first protective sleeve 5, and second protective sleeve 6 of the photovoltaic connector are exactly the same as those in Embodiment One. The difference lies in the size of the third protective sleeve 7.

[0057] Specifically, in this embodiment, one end of the third protective sleeve 7 away from the socket 2 is flush with the end of the first protective sleeve 5 away from the socket 2, and one end of the third protective sleeve 7 away from the plug 1 is flush with the end of the second protective sleeve 6 away from the plug 1.

[0058] Based on the above structural design, after applying the adhesive to the corresponding ends of the first protective sleeve 5, second protective sleeve 6, and third protective sleeve 7, fourth adhesive layers 11 can be formed at both ends of the third protective sleeve 7 respectively.

[0059] The inner ring of one of the fourth adhesive layers 11 closely adheres to the outside of the first cable 3, one end closely adheres to the corresponding ends of the first protective sleeve 5 and third protective sleeve 7, and the thickness of this fourth adhesive layer 11 is sufficient to cover the entire end face of the first protective sleeve 5 and at least part of the end face of the third protective sleeve 7.

[0060] Similarly, the inner ring of the other fourth adhesive layer 11 closely adheres to the outside of the second cable 4, one end closely adheres to the corresponding ends of the second protective sleeve 6 and third protective sleeve 7, and the thickness of this fourth adhesive layer 11 is sufficient to cover the entire end face of the second protective sleeve 6 and at least part of the end face of the third protective sleeve 7.

[0061] Preferably, both of the above two fourth adhesive layers 11 cover the entire end face of the third protective sleeve 7.

[0062] Embodiment 3:

[0063] In this embodiment, the plug 1, socket 2, first cable 3, second cable 4, first protective sleeve 5 and second protective sleeve 6 of the photovoltaic connector are exactly the same as those in Embodiment 1, except for the number and position of the third protective sleeve 7.

[0064] Specifically, referring to Figure 3 As shown, two third protective sleeves 7 are provided in the photovoltaic connector of this embodiment. One third protective sleeve 7 is sleeved outside all the plugs 1, part of the sockets 2 and part of the first protective sleeve 5, and covers the junction of the first protective sleeve 5 and the plug 1 and the insertion junction of the plug 1 and the socket 2. The other third protective sleeve 7 is sleeved outside part of the sockets 2 and part of the second protective sleeve 6, and covers the junction of the second protective sleeve 6 and the socket 2.

[0065] That is, one third protective sleeve 7 seals both the junction of the first protective sleeve 5 and the plug 1 and the insertion junction of the plug 1 and the socket 2, and the other third protective sleeve 7 seals the junction of the second protective sleeve 6 and the socket 2.

[0066] Based on the above structural design, adhesives need to be coated at both ends of the two third protective sleeves 7 in this embodiment to form the third adhesive layers 10.

[0067] For the third protective sleeve 7 sleeved outside all the plugs 1, the inner ring of the third adhesive layer 10 at one end closely adheres to the outside of the first protective sleeve 5, and the inner ring of the third adhesive layer 10 at the other end closely adheres to the outside of the socket 2, and the third adhesive layer 10 at this end covers at least part of the end face of the third protective sleeve 7.

[0068] For the other third protective sleeve 7, the inner ring of the third adhesive layer 10 at one end closely adheres to the outside of the second protective sleeve 6, and the inner ring of the third adhesive layer 10 at the other end closely adheres to the outside of the socket 2, and the third adhesive layer 10 at this end covers at least part of the end face of the third protective sleeve 7.

[0069] Embodiment 4:

[0070] In this embodiment, the plug 1, socket 2, first cable 3, second cable 4, first protective sleeve 5 and second protective sleeve 6 of the photovoltaic connector are exactly the same as those in Embodiment 3, except for the position of the third protective sleeve 7.

[0071] Specifically, referring to Figure 4As shown in the figure, two third protective sleeves 7 are also provided in the photovoltaic connector of this embodiment. One of the third protective sleeves 7 is sleeved outside a part of the plug 1 and a part of the first protective sleeve 5, and covers the junction of the first protective sleeve 5 and the plug 1. The other third protective sleeve 7 is sleeved outside all the sockets 2, a part of the plug 1 and a part of the second protective sleeve 6, and covers the junction of the second protective sleeve 6 and the socket 2 and the insertion part of the plug 1 and the socket 2.

[0072] That is, one third protective sleeve 7 seals the junction of the first protective sleeve 5 and the plug 1, and the other third protective sleeve 7 seals the junction of the second protective sleeve 6 and the socket 2 and the insertion part of the plug 1 and the socket 2.

[0073] Based on the above structural design, third adhesive layers 10 need to be coated at both ends of the two third protective sleeves 7 in this embodiment.

[0074] For the third protective sleeve 7 sleeved outside all the sockets 2, the inner ring of the third adhesive layer 10 at one end closely adheres to the outside of the second protective sleeve 6, and the inner ring of the third adhesive layer 10 at the other end closely adheres to the outside of the plug 1, and the third adhesive layer 10 at this end at least covers a part of the end face of the third protective sleeve 7.

[0075] For the other third protective sleeve 7, the inner ring of the third adhesive layer 10 at one end closely adheres to the outside of the first protective sleeve 5, and the inner ring of the third adhesive layer 10 at the other end closely adheres to the outside of the plug 1, and the third adhesive layer 10 at this end at least covers a part of the end face of the third protective sleeve 7.

[0076] Embodiment Five:

[0077] In this embodiment, the plug 1, socket 2, first cable 3, second cable 4, first protective sleeve 5 and second protective sleeve 6 of the photovoltaic connector are exactly the same as those in Embodiment One, and the difference lies in the number and position of the third protective sleeves 7.

[0078] Specifically, referring to Figure 5 As shown in the figure, three third protective sleeves 7 are provided in the photovoltaic connector of this embodiment. One of the third protective sleeves 7 is sleeved outside a part of the plug 1 and a part of the first protective sleeve 5, and covers the junction of the first protective sleeve 5 and the plug 1. One third protective sleeve 7 is sleeved outside a part of the plug 1 and a part of the socket 2, and covers the insertion part of the plug 1 and the socket 2. One third protective sleeve 7 is sleeved outside a part of the socket 2 and a part of the second protective sleeve 6, and covers the junction of the second protective sleeve 6 and the socket 2.

[0079] That is, the three third protective sleeves 7 separately seal the junction of the first protective sleeve 5 and the plug 1, the junction of the second protective sleeve 6 and the socket 2, and the insertion part of the plug 1 and the socket 2.

[0080] Based on the above structural design, adhesives need to be coated on both ends of the three third protective sleeves 7 in this embodiment to form the third adhesive layer 10.

[0081] Embodiment Six:

[0082] Referring to Figure 6 As shown, compared with Embodiment One, the photovoltaic connector in this embodiment only includes the plug 1, the first cable 3, the first protective sleeve 5, and the third protective sleeve 7. The first end of the plug 1 is provided with a plug-in portion 101. The first cable 3 is connected to the plug-in portion 101 and penetrates through the second end of the plug 1. The first protective sleeve 5 is sleeved outside a part of the first cable 3 and a part of the plug 1, and covers the junction of the first protective sleeve 5 and the plug 1.

[0083] Embodiment Seven:

[0084] Referring to Figure 7 As shown, compared with Embodiment One, the photovoltaic connector in this embodiment only includes the socket 2, the second cable 4, the second protective sleeve 6, and the third protective sleeve 7. The first end of the socket 2 is provided with a docking portion 201. The second cable 4 is connected to the docking portion 201 and penetrates through the second end of the socket 2. The second protective sleeve 6 is sleeved outside a part of the second cable 4 and a part of the socket 2, and covers the junction of the second protective sleeve 6 and the socket 2.

[0085] Embodiment Eight:

[0086] The junction box in this embodiment includes the photovoltaic connector in any of the above embodiments.

[0087] Embodiment Nine:

[0088] The photovoltaic module in this embodiment includes the junction box in the above embodiments.

[0089] It can be seen from the above technical solutions that the present utility model has the following beneficial effects:

[0090] The first protective sleeve and the second protective sleeve in the present utility model can respectively eliminate the thickness difference between the first cable and the plug and between the second cable and the socket, avoid the cracking of the end part of the third protective sleeve after long-term use, improve the sealing performance of the plug and the socket, and increase the overall service life of the photovoltaic connector.

[0091] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0092] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic connector, comprising a plug, a socket, a first cable and a second cable. A plugging portion is provided at the first end of the plug. The first cable is connected to the plugging portion and penetrates through the second end of the plug. A docking portion is provided at the first end of the socket. The second cable is connected to the docking portion and penetrates through the second end of the socket, characterized in that, The photovoltaic connector further includes a first protective sleeve, a second protective sleeve, and a third protective sleeve. The first protective sleeve is sleeved outside the first cable and adjacent to the second end of the plug. The second protective sleeve is sleeved outside the second cable and adjacent to the second end of the socket. The third protective sleeve is sleeved outside at least part of the plug, at least part of the socket, at least part of the first protective sleeve, and at least part of the second protective sleeve, and covers at least the insertion joint of the plug and the socket, the joint of the first protective sleeve and the plug, and the joint of the second protective sleeve and the socket.

2. The photovoltaic connector according to claim 1, wherein The photovoltaic connector is provided with a third protective sleeve. The third protective sleeve is sleeved outside the entire plug and the entire socket, and the third protective sleeve extends outside the first protective sleeve and the second protective sleeve.

3. The photovoltaic connector according to claim 1, characterized in that, The photovoltaic connector is provided with two third protective sleeves. One of the third protective sleeves is sleeved outside the entire plug, at least part of the socket, and at least part of the first protective sleeve, and covers the joint of the first protective sleeve and the plug and the insertion joint of the plug and the socket. The other third protective sleeve is sleeved outside at least part of the socket and at least part of the second protective sleeve, and covers the joint of the second protective sleeve and the socket; or, The photovoltaic connector is provided with two third protective sleeves. One of the third protective sleeves is sleeved outside at least part of the plug and at least part of the first protective sleeve, and covers the joint of the first protective sleeve and the plug. The other third protective sleeve is sleeved outside the entire socket, at least part of the plug, and at least part of the second protective sleeve, and covers the joint of the second protective sleeve and the socket and the insertion joint of the plug and the socket.

4. The photovoltaic connector according to claim 1, wherein, The photovoltaic connector is provided with three third protective sleeves. One of the third protective sleeves is sleeved outside at least part of the plug and at least part of the first protective sleeve, and covers the joint of the first protective sleeve and the plug. One of the third protective sleeves is sleeved outside at least part of the plug and at least part of the socket, and covers the insertion joint of the plug and the socket. One of the third protective sleeves is sleeved outside at least part of the socket and at least part of the second protective sleeve, and covers the joint of the second protective sleeve and the socket.

5. The photovoltaic connector according to claim 1, wherein For the third protective sleeve covering the joint of the first protective sleeve and the plug, the end away from the socket is flush with the end of the first protective sleeve away from the socket; and / or, For the third protective sleeve covering the joint of the second protective sleeve and the socket, the end away from the plug is flush with the end of the second protective sleeve away from the plug.

6. The photovoltaic connector according to claim 1, characterized in that The total thickness of the first cable and the first protective sleeve is less than or equal to the thickness of the plug; and / or, The total thickness of the second cable and the second protective sleeve is less than or equal to the thickness of the socket.

7. The photovoltaic connector according to claim 1, wherein The end of the first protective sleeve away from the plug is provided with a first adhesive layer; and / or, The end of the second protective sleeve away from the socket is provided with a second adhesive layer; and / or, Both ends of the third protective sleeve are provided with a third adhesive layer.

8. A photovoltaic connector includes a plug and a first cable. A plug-in part is provided at the first end of the plug. The first cable is connected to the plug-in part and penetrates through the second end of the plug. It is characterized in that, The photovoltaic connector further includes a first protective sleeve and a third protective sleeve. The first protective sleeve is sleeved outside at least part of the first cable and at least part of the plug, and covers the joint of the first protective sleeve and the plug.

9. A photovoltaic connector, comprising a socket and a second cable. A docking portion is provided at a first end of the socket. The second cable is connected to the docking portion and penetrates through a second end of the socket, characterized in that, The photovoltaic connector further includes a second protective sleeve and a third protective sleeve. The second protective sleeve is sleeved on at least part of the second cable and at least part of the socket, and covers the junction of the second protective sleeve and the socket.

10. A junction box, characterized in that, The junction box includes the photovoltaic connector according to any one of claims 1 to 9.

11. A photovoltaic module, characterized in that, The photovoltaic module includes the junction box according to claim 10.

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