CN211958006U

CN211958006U - Photovoltaic connection structure and photovoltaic connection device

Info

Publication number: CN211958006U
Application number: CN202020627167.1U
Authority: CN
Inventors: 万金华; 王铁磊
Original assignee: Dongguan Yuxin New Energy Technology Co ltd
Current assignee: Dongguan Yuxin New Energy Technology Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-17
Anticipated expiration: 2030-04-23

Abstract

The utility model relates to a photovoltaic connection structure and photovoltaic connecting device, including public end connector and female end connector, public end connector includes public end cover shell and sets up the public terminal in public end cover shell, female end connector includes female end cover shell and sets up the female terminal in female end cover shell the one end of female terminal has an elastic contraction portion and one set locates the outer hoop of elastic contraction portion, the hoop is suitable for to work as public terminal inserts behind the female terminal, will elastic contraction portion tightens up, so that public terminal and female terminal keep zonulae occludens. The utility model discloses can make female terminal and male terminal keep good electrical contact to reduce contact resistance, improved the reliability of product, and then avoided the potential safety hazard because of contact resistance is too big and lead to.

Description

Photovoltaic connection structure and photovoltaic connection device

Technical Field

The utility model relates to a connector technical field, in particular to photovoltaic connection structure and photovoltaic connecting device.

Background

The photovoltaic connector is applied to a photovoltaic power generation system and plays a role in conducting current. The current conduction of the photovoltaic connector depends on a copper metal terminal inside the connector, and the external plastic shell plays a role in electrical and mechanical protection.

At present, in a metal terminal connection structure of a conventional connector (as shown in fig. 1), a female terminal 1 ' is connected with a rotary spring 3 ', and then the rotary spring 3 ' is connected with a male terminal 2 ', and the rotary spring 3 ' plays a role in connecting the male terminal and the female terminal by virtue of elasticity and conductivity of the rotary spring. However, this structure has the following disadvantages:

1. the conductive modes that the rotary spring 3 'is contacted with the female terminal 1' and the rotary spring 3 'is contacted with the male terminal 2' share two levels of contact points, so that the contact resistance is increased, the higher the resistance is, the higher the temperature is when the connector is connected with current, the connector is easy to deform thermally and even burn, and the current global photovoltaic power generation system has a plurality of connector heating and firing events.

2. The spring 3 'relies on automation equipment to install in female terminal 1', if fail whole inspection, has the neglected loading problem to appear, and photovoltaic connector can generate electric arc and generate heat because of contact failure at the during operation as a result, leads to photovoltaic connector to burn out, damages whole photovoltaic system even.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a photovoltaic connection structure and a photovoltaic connection device, so as to improve the reliability of the product and reduce the potential safety hazard.

In order to achieve the above purpose, the present invention adopts the following technical solutions.

The utility model provides a photovoltaic connection structure, including the male terminal and with the female terminal that the male terminal electricity is connected, its characterized in that: one end of the female terminal is provided with an elastic contraction part and a hoop sleeved outside the elastic contraction part, and the hoop is suitable for tightening the elastic contraction part after the male terminal is inserted into the female terminal so as to keep the male terminal and the female terminal in tight connection.

Preferably, the elastic contraction part is cylindrical, and a plurality of through cutting grooves are formed in the side surface of the cylinder along a bus.

Preferably, the ferrule is cylindrical, and a cut penetrating through the upper end and the lower end of the cylinder wall is formed along the cylinder wall.

Preferably, the cut is linear or helical.

Preferably, the other end of the female terminal is provided with a wrapping sheet suitable for wrapping the cable, and the wrapping sheet comprises two wing plates suitable for being riveted and fixed on the cable.

Preferably, an anti-slip structure adapted to clamp the cable is provided on an inner wall of the wrapping sheet.

The utility model also provides a photovoltaic connecting device, including public end connector and female end connector, public end connector includes public end cover shell and sets up the public terminal in public end cover shell, female end connector includes female end cover shell and sets up the female terminal in female end cover shell, the one end of female terminal has an elastic contraction portion and one set locates the outer cuff of elastic contraction portion, the cuff is suitable for to work as public terminal inserts behind the female terminal, will elastic contraction portion tightens up, so that public terminal and female terminal keep zonulae occludens.

In the photovoltaic connecting device, the male end connector and the female end connector respectively comprise a wire claw connected with the photovoltaic cable and a nut pressing the wire claw.

In the photovoltaic connecting device, a waterproof ring is further arranged between the male end connector and the female end connector.

The utility model discloses one end at female terminal sets up elastic contraction portion to establish a cuff at this elastic contraction portion overcoat, make the male terminal that inserts in the female terminal reliably by cuff and elastic contraction portion chucking, make female terminal and male terminal keep good electrical contact, thereby reduced contact resistance, improved the reliability of product, and then avoided the potential safety hazard because of contact resistance is too big and leads to.

Drawings

Fig. 1 is a schematic view of a connection structure of a photovoltaic connector in the prior art;

FIG. 2 is a schematic diagram of the connection structure of the photovoltaic connector in this embodiment;

fig. 3 is a schematic structural diagram of the female terminal in the present embodiment;

FIG. 4 is a schematic diagram of the overall structure of the photovoltaic connector in this embodiment;

FIG. 5 is a schematic cross-sectional view of the photovoltaic connector of the present embodiment;

fig. 6 is an exploded view of the photovoltaic connector of the present embodiment.

The purpose of the present invention, its function and principle will be further elucidated in the detailed description with reference to the accompanying drawings.

Detailed Description

The following further description is made with reference to the drawings and specific embodiments.

As shown in fig. 2, the present embodiment provides a photovoltaic connection structure 1, which includes a male terminal 12 and a female terminal 22, wherein one end of the female terminal 22 has an elastic shrinking portion 221 and a ferrule 222 sleeved outside the elastic shrinking portion 221, and the ferrule 222 is adapted to shrink the elastic shrinking portion 221 after the male terminal 12 is inserted into the female terminal 22, so as to keep the male terminal 12 and the female terminal 22 tightly connected. Good contact between the male terminal 12 and the female terminal 22 can reduce contact resistance, thereby avoiding potential safety hazards due to heat generation caused by excessive contact resistance.

Referring to fig. 3, the elastic contracting portion 221 is cylindrical, and a plurality of through slits 2211 are formed along a bus on the side surface of the cylinder. The male terminal 12 and the female terminal 22 are in interference fit, after the male terminal 12 is inserted into the female terminal 22, the elastic shrinkage part 221 expands, and under the action of the clamping force of the ferrule 222, the female terminal 22 presses the male terminal 12 tightly, so that the male terminal 12 and the female terminal are kept in close contact, the male terminal 12 and the female terminal cannot be loosened or in poor contact even in a severe vibration environment, and the reliability of electrical connection of a product is guaranteed.

In order to simplify the structure of the product, the ferrule 222 is cylindrical, and a cut 2221 penetrating the upper and lower ends of the cylindrical wall is formed along the cylindrical wall, and the cut 2221 is linear or spiral. The hoop 222 can be made of copper sheet, has good elasticity, and can be stretched to be sleeved outside the elastic contraction part 221 to play a role of tightening the elastic contraction part 221.

Further, the other end of the female terminal 22 is provided with a wrapping sheet 223 adapted to wrap the cable, and the wrapping sheet 223 includes two wing plates 2231 adapted to be riveted on the cable. In assembly, after the core wire in the cable 200 is exposed, the wing 2231 is wrapped around the core wire and then riveted with a tool to firmly fix the covering 223 and the core wire together and achieve good electrical contact.

In addition, the anti-slip structure 2232 adapted to clamp the cable is disposed on the inner wall of the wrapping sheet 223, which can effectively prevent the cable from coming out of the female terminal 22, so as to further improve the reliability of the product.

Referring to fig. 4 to 6, the present embodiment further provides a photovoltaic connection device 100, including a male end connector 10 and a female end connector 20, where the male end connector 10 includes a male end housing 11 and a male terminal 12 disposed in the male end housing 11, the female end connector 20 includes a female end housing 21 and a female terminal 22 disposed in the female end housing 21, one end of the female terminal 22 has an elastic shrinking portion 221 and a ferrule 222 disposed outside the elastic shrinking portion 221, and the ferrule 222 can shrink the elastic shrinking portion 221 after the male terminal 12 is inserted into the female terminal 22, so that the male terminal 12 and the female terminal 22 are tightly connected.

The male end connector 10 and the female end connector 20 further comprise

wire claws

13, 23 connected to the cable 200 and

nuts

14, 24 compressing the

wire claws

13, 23, respectively.

A waterproof ring 30 is further arranged between the male end connector 10 and the female end connector 20. Meanwhile, a waterproof plug 40 is also arranged between the photovoltaic cable 200 and the

wire claws

13 and 23, so that the photovoltaic connecting device 1 of the embodiment can reach the protection grade of IP67, and the service environment of the product is greatly widened.

To sum up, the utility model discloses one end at female terminal sets up elastic shrinkage portion to establish a cuff at this elastic shrinkage portion overcoat, make the male terminal that inserts in the female terminal can reliably be by cuff and elastic shrinkage portion chucking, make female terminal and male terminal keep good electrical contact, thereby reduced contact resistance, improved the reliability of product, and then avoided because of the too big potential safety hazard that leads to of contact resistance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a photovoltaic connection structure, including the male terminal and with the female terminal that the male terminal electricity is connected, its characterized in that: one end of the female terminal is provided with an elastic contraction part and a hoop sleeved outside the elastic contraction part, and the hoop is suitable for tightening the elastic contraction part after the male terminal is inserted into the female terminal so as to keep the male terminal and the female terminal in tight connection.

2. The photovoltaic connection structure of claim 1, wherein: the elastic contraction part is cylindrical, and a plurality of through cutting grooves are formed in the side face of the cylinder body along a bus.

3. The photovoltaic connection structure according to claim 1 or 2, wherein: the hoop is cylindrical, and a cut penetrating through the upper end and the lower end of the cylinder wall is formed along the cylinder wall.

4. The photovoltaic connection structure of claim 3, wherein: the incision is linear or spiral.

5. The photovoltaic connection structure of claim 1, wherein: the other end of the female terminal is provided with a wrapping sheet suitable for wrapping the cable, and the wrapping sheet comprises two wing plates suitable for being riveted and fixed on the cable.

6. The photovoltaic connection structure of claim 5, wherein: and an anti-slip structure suitable for clamping the cable is arranged on the inner wall of the wrapping sheet.

7. The utility model provides a photovoltaic connecting device, includes public end connector and female end connector, public end connector includes public end cover shell and sets up the public terminal in public end cover shell, female end connector includes female end cover shell and sets up the female terminal in female end cover shell, its characterized in that: one end of the female terminal is provided with an elastic contraction part and a hoop sleeved outside the elastic contraction part, and the hoop is suitable for tightening the elastic contraction part after the male terminal is inserted into the female terminal so as to keep the male terminal and the female terminal in tight connection.

8. The photovoltaic connection apparatus of claim 7, wherein: the male end connector and the female end connector further respectively comprise a wire claw connected with the photovoltaic cable and a nut pressing the wire claw.

9. The photovoltaic connection apparatus of claim 7, wherein: and a waterproof ring is also arranged between the male end connector and the female end connector.