CN220291204U

CN220291204U - Photovoltaic connector with multiple waterproof structures

Info

Publication number: CN220291204U
Application number: CN202321999523.2U
Authority: CN
Inventors: 段正刚; 熊双
Original assignee: Suzhou QC Solar Co Ltd
Current assignee: Suzhou QC Solar Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-02
Anticipated expiration: 2033-07-27

Abstract

The utility model provides a photovoltaic connector with a multiple waterproof structure, which comprises an anode connector and a cathode connector which are in plug fit, wherein the anode connector comprises an anode shell, a plug bush, an anode plug, an anode inner claw, an anode nut, an anode cable and a sealing ring, and the cathode connector comprises a cathode shell, a contact pin, a cathode plug, a cathode inner claw, a cathode nut and a cathode cable. The sealing ring is arranged in the annular sealing groove at the plug-in end of the positive electrode shell, and at least two convex edges are arranged on the sealing ring, so that the tightness of the inserted positive electrode connector and the inserted negative electrode connector can be enhanced, and the waterproof effect is enhanced; the positive electrode and/or the negative electrode plug inner wall is provided with at least one convex rib, interference fit is formed between the positive electrode and the negative electrode plug inner wall and the cable, the convex rib forms a multiple waterproof structure, waterproof effect can be greatly enhanced, waterproof performance of the photovoltaic connector is enhanced, the photovoltaic connector is particularly suitable for application scenes with larger water vapor content, and efficient waterproof requirements are met.

Description

Photovoltaic connector with multiple waterproof structures

Technical Field

The utility model relates to the technical field of photovoltaic systems, in particular to a photovoltaic connector with a multiple waterproof structure.

Background

The photovoltaic power generation system needs to connect a plurality of photovoltaic modules with each other through cables to form a photovoltaic module array so as to output large current outwards, and then current is converged and then output to a user terminal, so that a connector is an indispensable device in the photovoltaic connection system. In some application scenarios with a high water vapor content, such as in a marine photovoltaic system, the photovoltaic connector needs to have a high waterproof performance to avoid water inlet failure. However, the existing waterproof structure of the photovoltaic connector is single, and cannot meet the application requirements of efficient waterproof. Accordingly, improvements in the waterproof construction of photovoltaic connectors are desired.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a photovoltaic connector with a multiple waterproof structure, wherein a plurality of convex ribs are arranged on sealing rings at the insertion positions of positive and negative poles to enhance the tightness, and a plurality of convex ribs are arranged on the inner wall of a connector plug to realize interference fit with a cable, so that the multiple waterproof structure is formed, and the waterproof effect is enhanced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a photovoltaic connector with multiple waterproof structures comprises a positive connector and a negative connector which are in plug-in fit;

the positive connector comprises a positive shell, a plug bush, a positive plug, a positive inner claw, a positive nut and a positive cable, wherein the positive shell is provided with a first plug end and a first wire inlet end which are opposite to each other, the plug bush is arranged in the first plug end, the positive nut is in threaded connection with the first wire inlet end, the positive plug and the positive inner claw are arranged in the positive nut, and the positive inner claw is sleeved on the positive plug; the positive electrode cable penetrates into the positive electrode shell from the first wire inlet end and is connected with the plug bush;

the negative electrode connector comprises a negative electrode shell, a contact pin, a negative electrode plug, a negative electrode inner claw, a negative electrode nut and a negative electrode cable, wherein the negative electrode shell is provided with a second opposite inserting end and a second wire inlet end, the contact pin is arranged in the second inserting end, the negative electrode nut is in threaded connection with the second wire inlet end, the negative electrode plug and the negative electrode inner claw are arranged in the negative electrode nut, and the negative electrode inner claw is sleeved on the negative electrode plug; the negative cable penetrates into the negative shell from the second inlet end and is connected with the contact pin;

at least one convex rib is arranged on the inner wall of the positive electrode plug and/or the negative electrode plug, and the convex rib and the outer wall of the cable form interference fit.

Preferably, the positive electrode connector further comprises a sealing ring, the first plug end is provided with a plug barrel part, the plug sleeve is accommodated in the plug barrel part, the plug barrel part is provided with an annular sealing groove, and the sealing ring is arranged at the annular sealing groove; at least two convex edges are arranged on the sealing ring.

Preferably, the second plugging end is provided with a jack part, the pin is accommodated in the jack part, the plug tube part is inserted into the jack part, the plug bush is connected with the plug pair in a plug manner, and at least two protruding edges on the sealing ring are in interference fit with the inner wall of the jack part.

Preferably, the cartridge insertion part comprises a first cartridge and a second cartridge, the first cartridge is located between the main body part of the positive electrode housing and the second cartridge, the outer diameter of the first cartridge is larger than that of the second cartridge, the annular sealing groove is arranged on the first cartridge, and the sealing ring is arranged at the annular sealing groove; the utility model discloses a lithium ion battery pack, including the negative electrode shell, the jack portion is equipped with first jack and second jack in, first jack is located the main part of negative electrode shell with between the second jack, the aperture of first jack is less than the aperture of second jack, the structure of first jack with the structure phase-match of second cartridge, the structure of second jack with the structure phase-match of first cartridge, at least twice bead on the sealing washer with the inner wall interference fit of second jack.

Preferably, the positive electrode plug is of a three-step structure, the positive electrode plug comprises a head part, a middle part and a tail part which are coaxially arranged, the outer diameter of the head part of the positive electrode plug is larger than that of the middle part, the outer diameter of the middle part is larger than that of the tail part, the head part of the positive electrode plug faces the first wire inlet end, and the positive electrode inner claw is sleeved on the middle part and the tail part of the positive electrode plug; the inner walls of the head part, the middle part and the tail part of the positive electrode plug are provided with the convex ribs.

Further, a first limiting groove is formed in the inner wall of the first wire inlet end, and the head of the positive electrode plug is located at the first limiting groove.

Preferably, the negative electrode plug is of a three-step structure, the negative electrode plug comprises a head part, a middle part and a tail part which are coaxially arranged, the outer diameter of the head part of the negative electrode plug is larger than that of the middle part, the outer diameter of the middle part is larger than that of the tail part, the head part of the negative electrode plug faces the second wire inlet end, and the negative electrode inner claw is sleeved on the middle part and the tail part of the negative electrode plug; the inner walls of the head part, the middle part and the tail part of the negative electrode plug are provided with the convex ribs.

Further, a second limiting groove is formed in the inner wall of the second wire inlet end, and the head of the negative electrode plug is located at the second limiting groove.

Preferably, the end face of the first plug-in end is provided with a barb, the end face of the second plug-in end is provided with a clamping groove, and the barb is correspondingly inserted into the clamping groove.

Preferably, the positive electrode plug and the negative electrode plug are made of rubber materials, and the positive electrode inner claw and the negative electrode inner claw are made of soft plastic materials.

Compared with the prior art, the utility model has the beneficial effects that: in the photovoltaic connector, at least two convex edges are arranged on the sealing ring, so that the tightness of the inserted positive electrode connector and the inserted negative electrode connector can be enhanced, and the waterproof effect is enhanced; the multichannel protruding muscle of anodal end cap inner wall and anodal cable interference fit, the multichannel protruding muscle of negative pole end cap inner wall and negative pole cable interference fit form multiple waterproof construction, can strengthen the waterproof effect greatly, strengthen photovoltaic connector waterproof performance for this photovoltaic connector is particularly useful for the great application scenario of steam content, satisfies high-efficient waterproof demand.

Drawings

Fig. 1 is an exploded view of a photovoltaic connector with multiple waterproof structures according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a photovoltaic connector with multiple waterproof structures according to an embodiment of the present utility model.

Fig. 3 is a partial enlarged view at a in fig. 2.

Fig. 4 is a partial enlarged view at B in fig. 2.

Fig. 5 is a partial enlarged view at C in fig. 2.

In the figure, a 10-positive connector, a 11-positive shell, a 111-plug part, a 112-first plug, a 113-second plug, a 114-annular sealing groove, a 115-first limit groove, a 116-barb, a 12-plug, a 13-positive plug, a 131-convex rib, a 14-positive inner claw, a 15-positive nut, a 16-positive cable, a 17-sealing ring and a 171-convex rib are shown; 20-negative electrode connector, 21-negative electrode shell, 211-jack part, 212-first jack, 213-second jack, 214-second limit groove, 215-clamping groove, 22-contact pin, 23-negative electrode plug, 231-convex rib, 24-negative electrode inner claw, 25-negative electrode nut and 26-negative electrode cable.

Detailed Description

For a further understanding of the objects, construction, features and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Referring to fig. 1 to 5 in combination, fig. 1 is an exploded view of a photovoltaic connector with multiple waterproof structures according to an embodiment of the present utility model, fig. 2 is a cross-sectional view of a photovoltaic connector with multiple waterproof structures according to an embodiment of the present utility model, fig. 3 is a partially enlarged view at a in fig. 2, fig. 4 is a partially enlarged view at B in fig. 2, and fig. 5 is a partially enlarged view at C in fig. 2.

A photovoltaic connector with multiple waterproof structures according to an embodiment of the present utility model includes a positive connector 10 and a negative connector 20 that are mated by plugging.

The positive connector 10 comprises a positive shell 11, a plug bush 12, a positive plug 13, a positive inner claw 14, a positive nut 15 and a positive cable 16, wherein the positive shell 11 is provided with a first plug end and a first wire inlet end which are opposite, the plug bush 12 is arranged in the first plug end, the positive nut 15 is in threaded connection with the first wire inlet end, the positive plug 13 and the positive inner claw 14 are arranged in the positive nut 15, and the positive inner claw 14 is sleeved on the positive plug 13. The positive cable 16 penetrates into the positive shell 11 from the first wire inlet end and is connected with the plug bush 12, the positive cable 16 penetrates through the positive screw cap 15, the positive inner claw 14 and the positive plug 13, a plurality of convex ribs 131 are arranged on the inner wall of the positive plug 13, the plurality of convex ribs 131 are in interference fit with the outer wall of the positive cable 16, and the inner wall (excluding the convex ribs 131) of the positive plug 13 is in clearance fit with the positive cable 15. During assembly, the positive inner claw 14 is sleeved on the positive plug 13, the positive cable 16 passes through the positive nut 15, the positive inner claw 14 and the positive plug 13 and then is connected with the plug bush 12, after the positive nut 15 is screwed up, the positive inner claw 14 is folded inwards, the positive cable 16 can be tightly wrapped by the positive plug 13 and the positive inner claw 14, and the multiple convex ribs 131 are in interference fit with the positive cable 16 to form a multiple waterproof structure, so that water can be effectively prevented from entering the positive connector 10 from the first inlet wire end, and excellent waterproof performance and mechanical strength are realized.

The negative connector 20 includes a negative housing 21, a pin 22, a negative plug 23, a negative inner claw 24, a negative nut 25, and a negative cable 26, where the negative housing 21 has a second insertion end and a second wire inlet end opposite to each other, the pin 22 is disposed in the second insertion end, the negative nut 25 is screwed to the second wire inlet end, the negative plug 23 and the negative inner claw 24 are disposed in the negative nut 25, and the negative inner claw 24 is sleeved on the negative plug 23. The negative electrode cable 26 penetrates into the negative electrode shell 21 from the second wire inlet end and is connected with the contact pin 22, the negative electrode cable 26 penetrates through the negative electrode nut 25, the negative electrode inner claw 24 and the negative electrode plug 23, a plurality of protruding ribs 231 are arranged on the inner wall of the negative electrode plug 23, the plurality of protruding ribs 231 are in interference fit with the outer wall of the negative electrode cable 26, and the inner wall (excluding the protruding ribs 231) of the negative electrode plug 23 is in clearance fit with the negative electrode cable 26. During assembly, the negative electrode inner claw 24 is sleeved on the negative electrode plug 23, the negative electrode cable 26 passes through the negative electrode nut 25, the negative electrode inner claw 24 and the negative electrode plug 23 and then is connected with the contact pin 22, after the negative electrode nut 25 is screwed up, the negative electrode inner claw 24 is folded inwards, the negative electrode plug 23 and the negative electrode inner claw 24 can tightly wrap the negative electrode cable 26, the plurality of convex ribs 231 are in interference fit with the negative electrode cable 26 to form a multiple waterproof structure, water can be effectively prevented from entering the negative electrode connector 20 from the second inlet wire end, and excellent waterproof performance and mechanical strength are realized.

Referring to fig. 1, 2 and 4, in a preferred embodiment of the present utility model, the positive electrode connector 10 further includes a sealing ring 17, and the sealing ring 17 may be made of rubber or other materials to enhance the waterproof performance and mechanical strength of the positive electrode connector 10 and the negative electrode connector 20 after being plugged. The first plug end is provided with a plug tube part 111, the plug bush 12 is accommodated in the plug tube part 111, the plug tube part 111 is provided with an annular sealing groove 114, and the sealing ring 17 is arranged at the annular sealing groove 114; at least two ribs 171 are provided on the seal 17.

Correspondingly, the second plugging end is provided with a plug hole part 211, the pin 22 is accommodated in the plug hole part 211, the plug tube part 111 is inserted into the plug hole part 211, the plug bush 12 is connected with the pin 22 in a plug-in way, and at least two protruding edges 171 on the sealing ring 17 are in interference fit with the inner wall of the plug hole part 211. Thus, each rib 171 can play a role in waterproof sealing, thereby enhancing waterproof effect and improving structural strength.

Referring to fig. 4, in an embodiment, two ribs 171 are parallel arranged on the sealing ring 17 to play a dual waterproof role, so as to enhance the waterproof performance and mechanical strength of the positive electrode connector 10 and the negative electrode connector 20 after being plugged. However, the present utility model is not limited thereto, and in other embodiments, the number of the ribs 171 can be set reasonably according to actual requirements.

In the preferred embodiment of the present utility model, the cartridge portion 111 includes a first cartridge 112 and a second cartridge 113, the first cartridge 112 is located between the main body portion of the positive electrode case 11 and the second cartridge 113, the outer diameter of the first cartridge 112 is larger than the outer diameter of the second cartridge 113, the annular seal groove 114 is provided on the first cartridge 112, and the seal ring 17 is provided at the annular seal groove 114. Correspondingly, a first jack 212 and a second jack 213 are arranged in the jack portion 211, the first jack 212 is located between the main body portion of the negative electrode shell 21 and the second jack 213, the aperture of the first jack 212 is smaller than that of the second jack 213, the structure of the first jack 212 is matched with that of the second plug tube 113, the structure of the second jack 213 is matched with that of the first plug tube 112, and at least two ribs 171 on the sealing ring 17 are in interference fit with the inner wall of the second jack 213. The socket portion 111 has a stepped structure, and the inside of the socket portion 211 is correspondingly in a stepped structure, so that after the positive connector 10 and the negative connector 20 are connected in an opposite-plug manner, the end face of the first socket 111 just abuts against the step end face between the first socket 212 and the second socket 213, and positioning and waterproof effects are achieved.

Referring to fig. 2 and 3 in combination, in a preferred embodiment of the present utility model, the positive electrode plug 13 has a three-step structure, the positive electrode plug 13 includes a head portion, a middle portion and a tail portion coaxially disposed, the outer diameter of the head portion of the positive electrode plug 13 is larger than the outer diameter of the middle portion, the outer diameter of the middle portion is larger than the outer diameter of the tail portion, the head portion of the positive electrode plug 13 faces the first wire inlet end, and the positive electrode inner claw 14 is sleeved on the middle portion and the tail portion of the positive electrode plug 13. The inner walls of the head, the middle and the tail of the positive electrode plug 13 are provided with convex ribs 131.

Further, a first limiting groove 115 is formed in the inner wall of the first wire inlet end, and the head of the positive electrode plug 13 is located at the first limiting groove 115. After the positive cable 16, the positive plug 13 and the positive inner claw 14 are assembled and the positive nut 15 is screwed down, the positive plug 13 and the positive inner claw 14 can tightly wrap the positive cable 16, the head end face of the positive plug 13 tightly abuts against the groove wall of the first limiting groove 115, and the plurality of convex ribs 131 are in interference fit with the positive cable 16, so that excellent waterproof performance and mechanical strength can be achieved.

Referring to fig. 2 and 5 in combination, in a preferred embodiment of the present utility model, the negative electrode plug 23 has a three-step structure, the negative electrode plug 23 includes a head portion, a middle portion and a tail portion coaxially disposed, the outer diameter of the head portion of the negative electrode plug 23 is greater than the outer diameter of the middle portion, the outer diameter of the middle portion is greater than the outer diameter of the tail portion, the head portion of the negative electrode plug 23 faces the second wire inlet end, and the negative electrode inner claw 24 is sleeved on the middle portion and the tail portion of the negative electrode plug 23; the inner walls of the head, middle and tail of the negative electrode plug 23 are provided with convex ribs 231.

Further, a second limiting groove 214 is formed in the inner wall of the second wire inlet end, and the head of the negative electrode plug 23 is located at the second limiting groove 214. After the negative electrode cable 26, the negative electrode plug 23 and the negative electrode inner claw 24 are assembled and the negative electrode nut 25 is screwed down, the negative electrode plug 23 and the negative electrode inner claw 24 can tightly wrap the negative electrode cable 26, the head end face of the negative electrode plug 23 tightly abuts against the groove wall of the second limiting groove 214, and the plurality of convex ribs 231 are in interference fit with the negative electrode cable 26, so that excellent waterproof performance and mechanical strength can be achieved.

In the preferred embodiment of the utility model, the end face of the first plugging end is provided with the barb 116, the end face of the second plugging end is provided with the clamping groove 215, and after the positive electrode connector 10 and the negative electrode connector 20 are plugged, the barb 116 is correspondingly inserted into the clamping groove 215, so that the self-locking function can be realized, and the connection firmness of the photovoltaic connector is improved.

In the preferred embodiment of the utility model, the positive electrode plug 13 and the negative electrode plug 23 are made of rubber, so that the positive electrode cable 16 and the negative electrode cable 26 can be better wrapped, and the waterproof sealing effect is enhanced; the positive electrode inner claw 14 and the negative electrode inner claw 24 are made of soft plastic, have good toughness and are not easy to break.

In summary, the photovoltaic connector with multiple waterproof structures provided by the utility model has the advantages that the sealing ring is provided with at least two convex edges, so that the tightness of the inserted positive electrode connector and negative electrode connector can be enhanced, and the waterproof effect is enhanced; the positive electrode plug and the negative electrode plug are provided with one or more protruding ribs and cable interference fit, so that a multiple waterproof structure is formed, waterproof effect can be greatly enhanced, waterproof performance of the photovoltaic connector is enhanced, the photovoltaic connector is particularly suitable for application scenes with large water vapor content, and efficient waterproof requirements are met.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A photovoltaic connector having a multiple waterproof structure, characterized in that: the device comprises a positive connector and a negative connector which are in plug-in fit;

at least one convex rib is arranged on the inner wall of the positive electrode plug and/or the negative electrode plug, and the convex rib is in interference fit with the outer wall of the cable.

2. The photovoltaic connector with multiple waterproof structures of claim 1, wherein: the positive electrode connector further comprises a sealing ring, the first plug-in end is provided with a plug-in tube part, the plug bush is accommodated in the plug-in tube part, the plug-in tube part is provided with an annular sealing groove, and the sealing ring is arranged at the annular sealing groove; at least two convex edges are arranged on the sealing ring.

3. The photovoltaic connector with multiple waterproof structures of claim 2, wherein: the second plug end is provided with a jack part, the plug pin is accommodated in the jack part, the plug cylinder part is inserted into the jack part, the plug bush is connected with the plug pair in a plug manner, and at least two protruding edges on the sealing ring are in interference fit with the inner wall of the jack part.

4. The photovoltaic connector with multiple waterproof structures of claim 3, wherein: the plug cylinder part comprises a first plug cylinder and a second plug cylinder, the first plug cylinder is positioned between the main body part of the positive electrode shell and the second plug cylinder, the outer diameter of the first plug cylinder is larger than that of the second plug cylinder, the annular sealing groove is arranged on the first plug cylinder, and the sealing ring is arranged at the annular sealing groove; the utility model discloses a lithium ion battery pack, including the negative electrode shell, the jack portion is equipped with first jack and second jack in, first jack is located the main part of negative electrode shell with between the second jack, the aperture of first jack is less than the aperture of second jack, the structure of first jack with the structure phase-match of second cartridge, the structure of second jack with the structure phase-match of first cartridge, at least twice bead on the sealing washer with the inner wall interference fit of second jack.

5. The photovoltaic connector with multiple waterproof structures of claim 1, wherein: the positive electrode plug is of a three-step structure and comprises a head part, a middle part and a tail part which are coaxially arranged, the outer diameter of the head part of the positive electrode plug is larger than that of the middle part, the outer diameter of the middle part is larger than that of the tail part, the head part of the positive electrode plug faces the first wire inlet end, and the positive electrode inner claw is sleeved on the middle part and the tail part of the positive electrode plug; the inner walls of the head part, the middle part and the tail part of the positive electrode plug are provided with the convex ribs.

6. The photovoltaic connector with multiple waterproof structures of claim 5, wherein: the inner wall of the first wire inlet end is provided with a first limit groove, and the head of the positive electrode plug is positioned at the first limit groove.

7. The photovoltaic connector with multiple waterproof structures of claim 1, wherein: the negative electrode plug is of a three-step structure and comprises a head part, a middle part and a tail part which are coaxially arranged, the outer diameter of the head part of the negative electrode plug is larger than that of the middle part, the outer diameter of the middle part is larger than that of the tail part, the head part of the negative electrode plug faces the second wire inlet end, and the negative electrode inner claw is sleeved on the middle part and the tail part of the negative electrode plug; the inner walls of the head part, the middle part and the tail part of the negative electrode plug are provided with the convex ribs.

8. The photovoltaic connector with multiple waterproof structures of claim 7, wherein: the inner wall of the second wire inlet end is provided with a second limit groove, and the head of the negative electrode plug is positioned at the second limit groove.

9. The photovoltaic connector with multiple waterproof structures according to any one of claims 1-8, wherein: the end face of the first plug-in end is provided with a barb, the end face of the second plug-in end is provided with a clamping groove, and the barb is correspondingly inserted into the clamping groove.

10. The photovoltaic connector with multiple waterproof structures according to any one of claims 1-8, wherein: the positive electrode plug and the negative electrode plug are made of rubber materials, and the positive electrode inner claw and the negative electrode inner claw are made of soft plastic materials.