CN216413913U

CN216413913U - Photovoltaic connector system and photovoltaic module

Info

Publication number: CN216413913U
Application number: CN202123213558.2U
Authority: CN
Inventors: 张治森; 王立宏; 樊兴柱; 叶善申; 江虹
Original assignee: Nanjing Dongsong Power Technology Co ltd
Current assignee: Nanjing Dongsong Power Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-04-29
Anticipated expiration: 2031-12-20

Abstract

The utility model relates to the technical field, in particular to a photovoltaic connector system and a photovoltaic module, which comprise: the sleeve body is provided with a cavity with two open ends; the bare wire connecting sleeve is arranged in the cavity, two ends of the bare wire connecting sleeve are provided with bare wire grooves respectively used for connecting bare wires inserted into cables from two ends of the sleeve body; and the two clamping sleeves are respectively arranged at two sides of the bare wire connecting sleeve, and the clamping sleeves can be inserted from the open end of the sleeve body and clamped in the cavity. The two ends of the sleeve body are provided with the detachable clamping sleeves, the clamping sleeves are provided with the pressing sheets, the pressing sheets can position the cables inserted into the clamping sleeves, meanwhile, one part of the pressing sheets is clamped with the clamping claws on the sleeve body, the clamping connection of the clamping sleeves and the sleeve body is realized, and meanwhile, the pressing sheets are pre-tightened, so that the cables are stressed when being pulled out, and the connection is kept stable and reliable.

Description

Photovoltaic connector system and photovoltaic module

Technical Field

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic connector system and a photovoltaic module.

Background

The photovoltaic connector is required to be used for cable connection among the junction box, the assembly and the inverter, a metal sleeve is arranged in the photovoltaic connector, two ends of the photovoltaic connector are respectively connected with bare wires of cables to be connected, and two ends of the photovoltaic connector are used for fixing two cables to be connected.

Present connector generally divide into male plug and female plug, and the butt joint of cable is realized through male plug and female plug butt joint, for example, photovoltaic module's cable and male plug are connected, and the cable and the female plug of terminal box are all rotated through the screw thread and the extruded mode of shell fragment, fix the cable, make again male plug and female plug block can.

Wherein, rotate the mode of extrusion preforming through the nut, the nut need twist many rings usually and just can fix the cable, and generally rely on operating personnel experience, unscrew the easy landing, screw up and cause the thread to warp easily, and during big connecting cable of batch, very consuming time hard.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects and shortcomings of the photovoltaic connector in the prior art, the utility model aims to replace the original form of connecting an extrusion pressing sheet with a screw cap and a locking cable by using a clamping structure, so that the clamping sleeve is limited, the locking of the pressing sheet is realized, and the connection is rapid and reliable.

In a first aspect of the present invention, a photovoltaic connector system is provided, including:

the sleeve body is provided with a cavity with two open ends;

the bare wire connecting sleeve is arranged in the cavity, two ends of the bare wire connecting sleeve are provided with bare wire grooves respectively used for connecting bare wires inserted into cables from two ends of the sleeve body;

the two clamping sleeves are respectively arranged at two sides of the bare wire connecting sleeve, the clamping sleeves are arranged to be inserted from the open end of the sleeve body and clamped in the cavity, and insertion holes for inserting cables are formed in the clamping sleeves;

the clamping sleeve is provided with pressing sheets which are arranged on the cable inserting side and are distributed in a central symmetry mode around the axis of the clamping sleeve, the pressing sheets are provided with contact parts located in the insertion holes and limiting parts located on the outer wall of the clamping sleeve, clamping jaws are arranged on the sleeve body, the clamping jaws can prevent the limiting parts from moving towards the cable extracting direction, and the clamping sleeve cannot be separated from the sleeve body.

Preferably, the contact portion of the wafer is arranged at an angle of 45-75 ° to the radial plane of the ferrule.

Preferably, the contact portion of the pressing piece is inclined in a direction toward the direction in which the cable is inserted from the ferrule.

Preferably, the width of the stopper portion of the pressing piece is larger than the width of the contact portion of the pressing piece.

Preferably, the pressing sheet is embedded with a metal sheet.

Preferably, a clamping groove is formed between the clamping jaw and the end face of the sleeve body, and the clamping jaw is provided with an inclined surface at the cable insertion side, so that the limiting part of the pressing sheet can enter the clamping groove through the inclined surface of the clamping jaw along the cable insertion direction.

Preferably, the clamping jaw is connected with a pressing handle extending towards the middle part of the sleeve body, and when the pressing handle is pressed down, the limiting part of the pressing sheet can be separated from the clamping groove.

Preferably, a sealing ring is arranged in the cavity, so that the clamping sleeve has a tendency of moving towards the cable pulling-out direction when being positioned in the cavity.

Preferably, the limiting part of the pressing sheet is arranged in a ring shape and is positioned on the outer wall of the clamping sleeve.

In a second aspect of the present invention, a photovoltaic module is provided, including:

the photovoltaic cell string is provided with a leading-out end cable;

a junction box provided with a drop cable;

the photovoltaic connector system described above;

the leading-out end cable and the leading-in end cable are respectively inserted into the clamping sleeves at the two ends of the sleeve body.

Compared with the prior art, the utility model has the advantages that:

the two ends of the sleeve body are provided with the detachable clamping sleeves, the clamping sleeves are provided with the pressing sheets, the pressing sheets can position the cables inserted into the clamping sleeves, meanwhile, one part of the pressing sheets is clamped with the clamping claws on the sleeve body, the clamping connection of the clamping sleeves and the sleeve body is realized, meanwhile, the pressing sheets are pre-tightened, the cables are pressed when being pulled out, the connection is kept stable and reliable, the clamping sleeves and the sleeve body can be separated when the pressing handle is pressed down, and the disassembly is easy.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a photovoltaic connector system according to the present invention;

FIG. 2 is a schematic view of the internal structure of the photovoltaic connector system shown in the present invention;

FIG. 3 is a schematic view of the structure of a wafer according to the present invention;

figure 4 is a schematic view of another configuration of a wafer according to the present invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a photovoltaic connector system, which mainly includes a sheath 1, a bare wire connection sheath 2, a ferrule 3 and a latch 4. The purpose is to realize the connection between two cables in a photovoltaic system, for example, the connection between the outgoing line of a photovoltaic cell string and the lead-in line in a junction box, the outgoing line and the lead-in line are firstly sleeved with a clamping sleeve 3, then the clamping sleeve 3 is clamped at two ends of a sleeve body 1 and is fixed by a locking buckle 4, and the conductor connection of two sections of cables is completed by a bare wire connecting sleeve 2.

The connection mode does not need to use threaded connection, the installation and disassembly processes are relatively simple, and the labor intensity and the operation time of operators can be reduced.

Specifically, the sleeve body 1 is provided with a cavity 101 with two open ends; the sleeve body 1 is made of an insulating plastic material, and is preferably formed by injection molding of PPO plastic.

Referring to fig. 2, the bare wire connecting sleeve 3 is disposed in the cavity 101, the bare wire connecting sleeve 3 is made of copper or aluminum, and two ends of the bare wire connecting sleeve 3 are provided with bare wire slots for respectively connecting bare wires inserted into cables from two ends of the sleeve body 1.

Specifically, the front ends of the plug-in wire and the outgoing wire are provided with a section of bare wire, and the bare wire can be inserted into a bare wire groove of the bare wire connecting sleeve 3, so that the electric connection between the two cables is realized.

As shown in fig. 1, further, in order to facilitate the butt joint of the two cables, two clamping sleeves 2 capable of being inserted into the sleeve body 1 are respectively disposed on two sides of the bare wire connecting sleeve 3, the clamping sleeves 2 can be clamped in the cavity 101, and the clamping sleeves 2 are internally provided with insertion holes 24 for inserting the cables.

Wherein the diameter of the insertion hole 24 is the same as the diameter of the cable, so that the cable can be inserted from the ferrule 2 and good sealing performance is maintained.

Referring to fig. 2, the ferrule 2 is provided with pressing pieces 21 on the cable insertion side, the pressing pieces 21 are distributed around the axis of the ferrule 2 in a central symmetry manner, and the pressing pieces 21 are provided with contact portions 23 located in the insertion holes and limiting portions 22 located on the outer wall of the ferrule 2.

Wherein, the contact part 23 in the insertion hole has a circumference at the inner edge smaller than the diameter of the insertion hole 24, so that the cable inserted into the insertion hole 24 can collide with the contact part 23, and the contact part 23 is pressed to generate an elastic force to press the cable in the radial direction, thereby positioning the cable.

And, at the same time, since the contact portion 23 and the stopper portion 22 are connected, when the cable is inserted, the contact portion moves in the insertion direction, and the stopper portion 22 moves in the opposite direction (pull-out direction) to the insertion direction.

Furthermore, the lock catch 4 is provided with a claw 42 on the sleeve body 1, and the claw 42 is set to prevent the limiting part 22 from moving towards the cable pulling-out direction, so that the sleeve body 2 cannot be pulled out from the sleeve body 1.

Thus, the limiting effect on the clamping sleeve 2 is formed, meanwhile, the rebounding of the contact part 23 is also prevented, the contact part 23 keeps the pressure on the cable, especially when the cable is pulled out outwards, the pressure of the contact part 23 on the cable is increased, and the anti-loosening effect is further achieved.

In an alternative embodiment, shown in connection with fig. 2, the contact portion 23 of the pressure piece 21 is arranged with an angle of 45-75 ° to the radial plane of the ferrule 2. And preferably the contact portion 23 of the pressure piece 21 is inclined in the direction of insertion of the cable from the ferrule 2.

In this way, when the cable is inserted, the contact part 23 is pressed to move to the left side, an angle change occurs, meanwhile, the contact part 23 rebounds the cable, and the limiting part 22 moves to the right side due to the lever principle and is limited by the claw 42, therefore, stress is applied between the limiting part 22 and the contact part 23, the contact part 23 has a tendency to move towards the direction of the cable, and particularly when the cable is pulled out outwards, the stress becomes larger, the larger the pressure on the cable is, and a better limiting effect is achieved.

Preferably, the pressing sheet 21 is embedded with a metal sheet, and the metal sheet extends from the contact portion 23 to the stopper portion 22, so as to increase the toughness of the entire pressing sheet 21.

Further, as shown in fig. 2 to 4, the width of the stopper portion 22 of the pressing piece 21 is larger than the width of the contact portion 23 of the pressing piece 21. Therefore, the contact area between the limiting part 22 and the clamping jaw 42 is large, the limiting part 22 is easily clamped by the clamping jaw 42, and the clamping sleeve 2 is favorably mounted.

Preferably, as shown in fig. 3, the position-limiting portion 22 of the pressing piece 21 is arranged in a ring shape and is located on the outer wall of the ferrule 2. Therefore, when the ferrule 2 is inserted into the sleeve body 1 at any angle, the limiting part 22 of the pressing sheet 21 can enter the clamping groove formed between the clamping jaw 42 and the end surface of the sleeve body 1 through the inclined surface of the clamping jaw 42 along the cable insertion direction.

Furthermore, the claw 21 is connected with a pressing handle 41 extending to the middle part of the sleeve body 1, and when the pressing handle 41 is pressed down, the claw 42 moves outwards along the radial direction, so that the limiting part 22 of the pressing sheet 21 can be separated from the clamping groove. So, be convenient for the card of cutting ferrule 2 to go into and break away from.

Preferably, the cavity 101 is provided with a first sealing ring 51 and a second sealing ring 52, so that the ferrule 2 has a tendency to move towards the cable pulling direction when it is in the cavity 101. And the pawl 42 is urged against the stop portion 22, further urging the contact portion 23 against the cable.

In a second aspect of the present invention, a photovoltaic module includes a photovoltaic cell string, a junction box, and the above-mentioned photovoltaic connector system.

The photovoltaic cell string is provided with a leading-out end cable, the junction box is provided with a leading-in end cable, and the leading-out end cable and the leading-in end cable are respectively inserted into the clamping sleeves at two ends of the sleeve body to complete connection of the two cables.

With the combination of the above embodiment, the detachable clamping sleeve is arranged at the two ends of the sleeve body, the clamping sleeve is provided with the pressing sheet, wherein the pressing sheet can position the cable inserted into the clamping sleeve, meanwhile, one part of the pressing sheet is clamped with the clamping jaw on the sleeve body to realize the clamping connection of the clamping sleeve and the sleeve body, and meanwhile, the pressing sheet is pre-tightened, so that the cable is pressed when being pulled out, the connection is kept stable and reliable, the clamping sleeve and the sleeve body can be separated when the pressing handle is pressed down, and the disassembly is easy.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A photovoltaic connector system, comprising:

the sleeve body is provided with a cavity with two open ends;

the bare wire connecting sleeve is arranged in the cavity, two ends of the bare wire connecting sleeve are provided with bare wire grooves respectively used for connecting bare wires of cables inserted from two ends of the sleeve body;

the clamping sleeve is provided with pressing sheets which are distributed in a central symmetry manner around the axis of the clamping sleeve on the cable inserting side, and each pressing sheet is provided with a contact part positioned in the insertion hole and a limiting part positioned on the outer wall of the clamping sleeve;

the sleeve body is provided with a clamping jaw, the clamping jaw is set to prevent the limiting part from moving in the cable pulling-out direction, and the clamping sleeve cannot be pulled out of the sleeve body.

2. The photovoltaic connector system of claim 1, wherein the contact portion of the wafer is disposed at an angle of 45-75 degrees to a radial plane of the ferrule.

3. The photovoltaic connector system of claim 2, wherein the contact portion of the wafer is angled in a direction toward insertion of the cable from the ferrule.

4. The photovoltaic connector system of claim 1, wherein a width of the retainer portion of the sheeting is greater than a width of the contact portion of the sheeting.

5. The photovoltaic connector system of claim 1, wherein the sheeting is embedded with a metal sheet.

6. The photovoltaic connector system according to claim 1, wherein a locking groove is formed between the claw and the end surface of the housing body, and the claw is provided with an inclined surface on the cable insertion side so that the stopper portion of the pressing piece can enter the locking groove through the inclined surface of the claw in the cable insertion direction.

7. The photovoltaic connector system of claim 6, wherein the latch is connected to a pressing handle extending toward a middle portion of the housing, and when the pressing handle is pressed, the stopper portion of the pressing plate can be disengaged from the engaging groove.

8. The photovoltaic connector system of any of claims 1-7, wherein a sealing ring is disposed in the cavity such that the ferrule has a tendency to move in a direction of cable pull-out when the ferrule is in the cavity.

9. The photovoltaic connector system of claim 8, wherein the retainer portion of the wafer is configured in a ring and is located on an outer wall of the ferrule.

10. A photovoltaic module, comprising:

the photovoltaic cell string is provided with a leading-out end cable;

a junction box provided with a drop cable;

the photovoltaic connector system of any one of claims 1-9;