CN214542559U

CN214542559U - Copper-aluminum connector for photovoltaic cable

Info

Publication number: CN214542559U
Application number: CN202120592863.8U
Authority: CN
Inventors: 彭祁军; 郑朋朋; 李艳群; 朱于静; 叶杰
Original assignee: Zhejiang Xinhui Photovoltaic Technology Co ltd
Current assignee: Zhejiang Zhengtai Xinhui Photovoltaic Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-10-29
Anticipated expiration: 2031-03-24

Abstract

The utility model discloses a copper-aluminum connector for photovoltaic cables, which comprises a copper cable, an aluminum cable, a copper terminal, an aluminum terminal, a limiting part, a sleeve base, a waterproof ring and a screw cap; the copper terminal and the aluminum terminal are respectively arranged at the end parts of the copper cable and the aluminum cable and are in hexagonal crimping, and the head parts of the copper and aluminum terminals are in friction welding; the limiting components are sleeved on two sides of the copper-aluminum terminal on the cable, the sleeve base is sleeved outside the copper-aluminum terminal, the waterproof ring and the screw cap are sleeved on the copper cable and the aluminum cable, the waterproof ring and the limiting components form limiting, and the screw cap wraps the waterproof ring and is in threaded connection with two end portions of the sleeve base. The utility model has simple structure, and can reduce the cost of the cable; by adopting the friction welding process, the copper-aluminum terminal is reliably connected and is not influenced by pressure welding; the crimping positions of the two sides of the copper-aluminum terminal and the photovoltaic cable are hexagonal, the crimping is reliable, the cable wires at the crimping section are tightly combined with the alloy wall, no gap is formed, the heating of the riveting position is less, and the compatibility with cables is good.

Description

Copper-aluminum connector for photovoltaic cable

Technical Field

The utility model belongs to the technical field of the connector, a connector that photovoltaic power plant used is related to, especially a copper aluminium connector for photovoltaic cable.

Background

In a photovoltaic power station, a large amount of electric quantity of components needs to be gathered together and enter an inverter, a photovoltaic cable and a connector need to be relied on, and the connector is a key device for mutually connecting various components such as a photovoltaic component, a junction box, the inverter, a combiner box and the like in a photovoltaic power generation system.

In the photovoltaic power station, the connecting copper bars inside the photovoltaic power generation equipment are all copper structures, and a battery panel or other assemblies connected with the photovoltaic power generation equipment are connected with the copper bars of the photovoltaic power generation equipment through copper wires as wiring devices. However, for the external components far away from the photovoltaic power generation equipment, copper wires with a longer distance need to be used, and the cost of the wiring device is higher due to the higher cost of the copper wires. Furthermore, photovoltaic power plants are implemented with various protection requirements, such as water resistance, dust resistance, tear resistance, ultraviolet resistance, etc., and reliability between electrical connections is also an aspect that must be considered.

Therefore, how to reduce the cost of the wiring device, satisfy a series of protection requirements, and satisfy the reliability requirements is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the photovoltaic power plant that exists among the prior art in the termination cost is higher, the protection requirement and the reliability be difficult to the shortcoming that satisfies, and the copper aluminium connector who is used for photovoltaic cable that provides.

The technical scheme of the utility model as follows:

a copper-aluminum connector for a photovoltaic cable comprises a copper cable, an aluminum cable, a copper terminal, an aluminum terminal, a limiting component, a sleeve base, a waterproof ring and a screw cap;

the tail of the copper terminal is in compression joint with the copper cable, the tail of the aluminum terminal is in compression joint with the aluminum cable, and the head of the copper terminal is in friction welding with the head of the aluminum terminal;

the limiting component is sleeved on the copper cable and the aluminum cable and positioned on two sides of the copper terminal and the aluminum terminal; the sleeve base is sleeved outside the copper terminal and the aluminum terminal, and the copper terminal and the aluminum terminal are wrapped together with the limiting part, the copper cable and the aluminum cable;

the waterproof ring is sleeved on the copper cable and the aluminum cable from two sides respectively, and the end part of the waterproof ring is abutted to the limiting component; the screw caps are sleeved on the copper cable and the aluminum cable from two sides respectively, wrap the limiting parts and are connected with two end parts of the sleeve base through threads respectively.

Furthermore, the tail part of the copper terminal and the tail part of the aluminum terminal are in hexagonal riveting with the crimping positions of the copper cable and the aluminum cable.

Furthermore, the limiting part is a heat-shrinkable tube, the heat-shrinkable tube is sleeved outside the friction-welded copper terminal and aluminum terminal, the copper terminal and the aluminum terminal are wrapped together with the copper cable and the aluminum cable, and the two ends of the heat-shrinkable tube are shrunk to tightly wrap the photovoltaic cable.

Further, the two end portions of the sleeve base are provided with thread structures, the tail portion of the screw cap is also provided with thread structures, and the thread structures at the tail portion of the screw cap are matched with the thread structures at the two end portions of the sleeve base.

The utility model has the beneficial technical effects that:

1. the utility model discloses a photovoltaic cable connector main objective is reduce cost, and original photovoltaic cable all adopts the copper cable, now changes into a part copper cable, partly aluminium cable, because aluminium is cheap, and copper is more expensive, consequently can reduce cost, though having increased a copper aluminium terminal adapting unit, the total cost of whole scheme is still lower.

2. The copper-aluminum terminal adopts the friction welding process, so that the copper terminal and the aluminum terminal are reliably connected and are not influenced by pressure welding; the compression joint positions of the copper terminal and the aluminum terminal and the photovoltaic cable are hexagonal, compression joint is reliable, cable wires at the compression joint section are tightly combined with the alloy wall, no gap exists, and heat generated at the riveting position is less.

3. The limiting part of the utility model adopts the heat shrink tube, and the photovoltaic cable is tightly wrapped at the two ends of the heat shrink tube, thereby playing the role of fixing the pulling force; the end part of the heat-shrinkable tube and the end part of the waterproof ring form a limit position, and the effect of fixing the wire and preventing pulling is achieved.

4. The utility model discloses it is good with the compatibility of cable conductor, can be used to 4 to 8 square lines.

Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 to 3 are views of the connector of the invention at different stages in installation, respectively.

Fig. 4 is a schematic view of the connector of the present invention after installation.

The various labels in the figure define: the device comprises a 1-copper terminal, a 2-aluminum terminal, a 3-heat shrinkable tube, a 4-sleeve base, a 5-waterproof ring, a 6-screw cap, a 11-copper cable, a 12-aluminum cable, a 20-copper terminal tail hexagonal riveting structure, a 21-aluminum terminal tail hexagonal riveting structure, a 22-heat shrinkable tube two-end tightening structure and a 23-heat shrinkable tube end and waterproof ring end limiting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention relates to a copper-aluminum connector for a photovoltaic cable, including a copper cable 11, an aluminum cable 12, a copper terminal 1, an aluminum terminal 2, a limiting component (in this embodiment, a heat shrink tube 3 is used as the limiting component), a sleeve base 4, a waterproof ring 5, and a screw cap 6.

Referring to fig. 1, a copper terminal 1 and an aluminum terminal 2 are respectively installed at the ends of two photovoltaic cables to be connected, one of the two photovoltaic cables is a copper cable 11, and the other is an aluminum cable 12; the tail of the copper terminal 1 is in hexagonal riveting with the copper cable 11, and the tail of the aluminum terminal 2 is in hexagonal riveting with the aluminum cable 12 (see a hexagonal riveting structure 20 at the tail of the copper terminal and a hexagonal riveting structure 21 at the tail of the aluminum terminal in fig. 1); the head of the copper terminal 1 is friction-welded with the head of the aluminum terminal 2, thereby connecting the copper cable 11 and the aluminum cable 12 together.

Referring to fig. 2, the heat shrinkable tube 3 is sleeved outside the friction welded copper terminal 1 and aluminum terminal 2, so as to wrap the copper terminal 1 and aluminum terminal 2 together with the copper cable 11 and aluminum cable 12, and two ends of the heat shrinkable tube 3 shrink to tightly wrap the copper cable 11 and aluminum cable 12 (see the two-end wrapping structure 22 of the heat shrinkable tube in fig. 2), so as to perform a tensile force fixing function. In other embodiments, a position-limiting component different from the heat shrinkable tube 3 may be used, as long as the copper cable 11 and the aluminum cable 12 can be tightly wrapped on both sides of the copper terminal and the aluminum terminal, so as to limit the positions of the copper terminal 1 and the aluminum terminal 2 and achieve the wire fixing function.

Referring to fig. 3, the sleeve base 4 is sleeved outside the heat shrinkable tube 3, and encloses the heat shrinkable tube 3 together with the copper terminal 1, the aluminum terminal 2, the copper cable 11 and the aluminum cable 12; two waterproof rings 5 are respectively sleeved on the copper cable 11 and the aluminum cable 12 from two sides and respectively abutted against two ends of the heat shrinkable tube 3 to form limit (see the limit positions 23 of the end part of the heat shrinkable tube and the end part of the waterproof ring in fig. 4); the two screw covers 6 are respectively sleeved on the copper cable 11 and the aluminum cable 12 from two sides, wrap the waterproof ring 5 and are respectively connected with two end parts of the sleeve base 4 in a matching way through a threaded structure.

The utility model discloses a theory of operation and mounting means as follows: referring to fig. 1 to 4, firstly, the copper terminal 1 and the aluminum terminal 2 are friction welded, and the copper terminal 1 and the aluminum terminal 2 can be reliably connected without being affected by pressure welding by adopting a friction welding process; the copper cable 11 and the aluminum cable 12 are respectively riveted on two sides of the copper terminal 1 and the aluminum terminal 2, and the riveted parts are hexagonal, so that the crimping is reliable; then the utility model adopts the heat shrink tube 3 as a limit part, on one hand, the heat shrink tube 3 can play a limit role matched with the waterproof ring 5, and the wire is fixed and prevented from being pulled; on the other hand, the heat-shrinkable tube 3 is sleeved outside the copper terminal 1 and the aluminum terminal 2 and is wrapped together with the copper cable 11 and the aluminum cable 12, so that the tensile force fixing effect is achieved, and the wires at two ends can be prevented from falling off; then, the copper terminal 1 and the aluminum terminal 2 sleeved with the heat shrinkable tube 3 are arranged in the sleeve base 4; waterproof rings 5 are arranged at two ends of the sleeve base 4, and the end part of the heat shrinkable tube 3 and the end part of the waterproof ring 5 form limiting, so that the effect of wire fixing and pulling prevention is achieved; finally, screw caps 6 are screwed on both ends of the sleeve base 4, and the finished structure is shown in fig. 4. The utility model has the advantages of simple structure, can reduce the cable cost, connect reliably, the crimping section is seamless, and riveting department generates heat fewly, and is good with the compatibility of cable conductor, can be used to 4 to 8 square lines.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a copper aluminium connector for photovoltaic cable which characterized in that: the waterproof cable comprises a copper cable, an aluminum cable, a copper terminal, an aluminum terminal, a limiting part, a sleeve base, a waterproof ring and a screw cap;

2. The copper-aluminum connector for photovoltaic cables as recited in claim 1, wherein: the tail part of the copper terminal and the crimping part of the tail part of the aluminum end and the copper cable and the aluminum cable are in hexagonal riveting.

3. The copper-aluminum connector for photovoltaic cables as recited in claim 1, wherein: the limiting part is a heat-shrinkable tube, the heat-shrinkable tube is sleeved outside the friction-welded copper terminal and aluminum terminal, the copper terminal and the aluminum terminal are wrapped together with the copper cable and the aluminum cable, and two ends of the heat-shrinkable tube are shrunk and tightly wrapped on the photovoltaic cable.

4. The copper-aluminum connector for photovoltaic cables as recited in claim 1, wherein: the two ends of the sleeve base are provided with thread structures, the tail of the screw cap is also provided with thread structures, and the thread structures at the tail of the screw cap are matched with the thread structures at the two ends of the sleeve base.