CN219106528U - Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic - Google Patents
Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic Download PDFInfo
- Publication number
- CN219106528U CN219106528U CN202223161208.0U CN202223161208U CN219106528U CN 219106528 U CN219106528 U CN 219106528U CN 202223161208 U CN202223161208 U CN 202223161208U CN 219106528 U CN219106528 U CN 219106528U
- Authority
- CN
- China
- Prior art keywords
- aluminum
- copper
- cable
- wire passing
- connecting piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007704 transition Effects 0.000 title claims abstract description 69
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 65
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 101
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 101
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052802 copper Inorganic materials 0.000 claims abstract description 58
- 239000010949 copper Substances 0.000 claims abstract description 58
- 239000004411 aluminium Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 238000002788 crimping Methods 0.000 abstract description 14
- 239000011800 void material Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model provides a copper-aluminum transition terminal and a copper-aluminum transition assembly for photovoltaics. The copper aluminum transition terminal includes: a copper terminal connection; the first end of the copper end connecting piece is configured to be electrically connected with the first homogeneous electrical element, the second end of the copper end connecting piece is connected with the first end of the aluminum end connecting piece, the second end of the aluminum end connecting piece is configured to be electrically connected with the second homogeneous electrical element, and the aluminum end connecting piece is provided with a connecting hole for a cable to penetrate; and an auxiliary wire passing structure provided on the aluminum end connector, the auxiliary wire passing structure being configured to be capable of assisting the cable to enter the connection hole. The technical scheme of the utility model can assist the cable to penetrate into the copper-aluminum transition terminal, and avoid the problem of reduced crimping quality caused by overlarge void ratio.
Description
Technical Field
The utility model relates to the technical field of photovoltaics, in particular to a copper-aluminum transition terminal and a copper-aluminum transition assembly for photovoltaics.
Background
In a photovoltaic power station, a plurality of photovoltaic group strings are classified to form a converging area, are connected into a converging box, and finally are connected into a power grid after sequentially passing through an inverter, a transformer and a conveying cable through the output of the converging box. Because of the rapid development of technology and the requirement of construction cost reduction of photovoltaic power stations, most photovoltaic power stations currently change cables used from a combiner box to an inverter, from the inverter to a box, and from the box to a booster station side from original copper cables into aluminum alloy cables, thereby realizing the requirements of light weight and cost reduction. And the photovoltaic group is connected to the bus box side cable by adopting a copper cable all the time. Therefore, copper-aluminum transition connectors are additionally arranged at the back of the special photovoltaic connector at the output end of the photovoltaic string and at the wire inlet of the junction box so as to realize conversion connection of copper cables and aluminum cables.
At present, current copper aluminium transition connector is including copper end connecting piece and the aluminium end connecting piece that are connected to and cladding at copper end connecting piece and the outer sheath of aluminium end connecting piece outward, wherein, has seted up the connecting hole that supplies the aluminium cable to penetrate on the aluminium end connecting piece, aluminium cable penetrate behind the connecting hole with aluminium end connecting piece welding or crimping. The inner diameter of the connection hole is generally set to be adapted to the outer diameter of the cable to be threaded in order to ensure that the cable has a small void ratio in the connection hole, and since the cable includes a plurality of cable cores, the problem of leakage of the cable easily occurs when the cable is threaded into the connection hole (i.e., it is difficult to ensure that all of the cable cores are threaded into the connection hole). When the terminal leakage wires reach more than 5, when the photovoltaic string normally operates, on the one hand, the temperature rise of the copper-aluminum transition terminal is increased, so that the power consumption is increased, meanwhile, the temperature rise failure risk is increased, the fault point of later operation is increased, and the operation stability of the photovoltaic system is seriously affected. On the other hand, the void ratio in the connecting hole is larger due to the leakage wire, the cable structure is loose, the problem of strand scattering or eccentricity easily occurs, even stress of each cable core cannot be guaranteed during crimping, and the crimping quality is reduced. Meanwhile, the leakage wire can cause the current-carrying capacity of the cable to be lower than the rated value, so that the cable has the hidden trouble of failure.
Disclosure of Invention
The utility model mainly aims to provide a copper-aluminum transition terminal and a copper-aluminum transition component for photovoltaic, which are used for solving the problem that the void ratio in the copper-aluminum transition terminal is too large and the crimping quality is affected due to the fact that the number of leaky wires is large in the process of penetrating the copper-aluminum transition terminal in the prior art.
In order to achieve the above object, according to one aspect of the present utility model, there is provided a copper aluminum transition terminal comprising: a copper terminal connection; the first end of the copper end connecting piece is configured to be electrically connected with the first homogeneous electrical element, the second end of the copper end connecting piece is connected with the first end of the aluminum end connecting piece, the second end of the aluminum end connecting piece is configured to be electrically connected with the second homogeneous electrical element, and the aluminum end connecting piece is provided with a connecting hole for a cable to penetrate; and an auxiliary wire passing structure provided on the aluminum end connector, the auxiliary wire passing structure being configured to be capable of assisting the cable to enter the connection hole.
Further, the auxiliary wire passing structure comprises an auxiliary piece arranged at the second end of the aluminum end connecting piece, the auxiliary piece is provided with a wire passing channel communicated with the connecting hole, and the projected outline of the wire passing channel is positioned outside the projection of the connecting hole in the direction perpendicular to the central axis of the connecting hole.
Further, the inner diameter of the wire passing channel gradually decreases along the end of the auxiliary member away from the aluminum end connecting member to the end where the aluminum end connecting member is located.
Further, the auxiliary wire passing structure comprises a wire passing groove communicated with the connecting hole, the wire passing groove is formed in the aluminum end connecting piece, the wire passing groove extends from the edge of the second end of the aluminum end connecting piece towards the first end of the aluminum end connecting piece, and the length of the wire passing groove is smaller than that of the aluminum end connecting piece.
Further, the aluminum end connecting piece is also provided with a chamfer surface, an opening communicated with the connecting hole is formed in the chamfer surface, and the opening forms an auxiliary wire passing structure.
Further, the angle α between the plane of the chamfer surface and the central axis of the connecting hole is in the range of 15 ° to 60 °.
Further, a chamfer is formed on the inner wall of the second end of the aluminum end connecting piece, and an auxiliary wire passing structure is formed by the chamfer; and/or, the copper end connecting piece is provided with an insertion hole for the cable to pass through, and the copper end connecting piece is also provided with an auxiliary wire passing structure.
According to another aspect of the present utility model, there is also provided a copper-aluminum transition assembly for a photovoltaic, comprising a copper cable, an aluminum cable, an outer jacket, and the copper-aluminum transition terminal described above, each of the copper cable and the aluminum cable comprising a plurality of cable cores, a first end of the copper cable being electrically connected to a copper end connector, a second end of the copper cable being configured to be electrically connectable to a homogeneous electrical element in a photovoltaic system; the first end of the aluminum cable is electrically connected to the aluminum end connector and the second end of the aluminum cable is configured to be electrically connectable to a homogeneous electrical element in the photovoltaic system.
Further, the copper-aluminum transition assembly for a photovoltaic further includes a sleeve having an outer diameter configured to fit an inner diameter of the connection hole, and a sleeve is sleeved around an outer circumference of the first end of at least one of the copper cable and the aluminum cable.
Further, the first end of at least one of the copper cable and the aluminum cable is pre-processed by soldering or gluing to form a single piece of the plurality of cable cores.
By applying the technical scheme of the utility model, the copper-aluminum transition terminal can realize conversion connection of the copper cable and the aluminum cable, and the auxiliary wire passing structure can assist the aluminum cable to penetrate into the connecting hole from the second end of the aluminum end connecting piece, so that the number of the leakage wires can be reduced, the problem of abnormal temperature rise caused by overlarge number of the leakage wires can be avoided, the void ratio in the connecting hole can be reduced, and the problem of loose cable structure caused by overlarge void ratio can be avoided, thereby improving the crimping quality.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 shows a schematic structural view of an embodiment one of a copper-aluminum transition terminal according to the present utility model (wherein copper and aluminum cables are shown);
FIG. 2 shows a schematic structural view of a second embodiment of a copper-aluminum transition terminal according to the present utility model (wherein copper and aluminum cables are shown);
fig. 3 shows a schematic structural view of a third embodiment of a copper-aluminum transition terminal according to the present utility model;
FIG. 4 shows a top view of the copper aluminum transition terminal of FIG. 3;
fig. 5 shows a schematic structural view of a fourth embodiment of a copper-aluminum transition terminal according to the present utility model; and
fig. 6 shows a front view of the copper aluminum transition terminal of fig. 5.
Wherein the above figures include the following reference numerals:
10. a copper terminal connection; 20. an aluminum end connector; 21. a connection hole; 22. wire passing grooves; 23. a chamfer surface; 24. an opening; 25. chamfering; 30. an auxiliary member; 31. a wire passing channel; 100. a copper cable; 200. an aluminum cable; 300. copper aluminum transition terminals.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
It should be noted that, the void ratio in the copper-aluminum transition terminal is too large to cause abnormal temperature rise to cause failure, the compression stroke is large to cause terminal crimping damage and even failure, statistics show that the configurable allowance range of the outer diameter of the cable and the inner diameter of the copper-aluminum transition terminal is 0 to 0.81mm, in order to ensure crimping quality, the aperture of the copper-aluminum transition terminal is designed generally to be attached to the outer diameter of the cable, and then crimping is performed, so that the performance is better. Therefore, it is not ensured that the cable easily penetrates into the transition terminal by increasing the aperture of the copper end connector or the aluminum end connector of the copper-aluminum transition terminal.
The copper-aluminum transition terminal is applicable to conversion linking of copper cables and aluminum cables, and can also be applicable to various scenes such as connecting pipes, plugs, special photovoltaic connections, photovoltaic strings, junction boxes, inverters and the like. In addition, the copper-aluminum transition terminal can be applied to power stations with the problem of wire leakage during threading, such as centralized photovoltaic power stations, distributed photovoltaic power stations and household photovoltaic power stations.
As shown in fig. 1 to 6, an embodiment of the present utility model provides a copper aluminum transition terminal. The copper aluminum transition terminal includes: the copper terminal connector 10, the aluminum terminal connector 20 and the auxiliary wire passing structure, wherein a first end of the copper terminal connector 10 is configured to be electrically connected with the first homogeneous electrical element, a second end of the copper terminal connector 10 is connected with a first end of the aluminum terminal connector 20, a second end of the aluminum terminal connector 20 is configured to be electrically connected with the second homogeneous electrical element, and a connecting hole 21 for a cable to pass through is formed in the aluminum terminal connector 20; an auxiliary wire passing structure is provided on the aluminum end connector 20, and is configured to be able to assist the cable to enter the connection hole 21 to reduce the void ratio of the connection hole 21.
In the above technical solution, the aperture size of the connection hole 21 is adapted to the outer diameter of the aluminum cable, and in addition, an auxiliary wire passing structure is provided to assist the cable to enter the connection hole 21, that is, not only can ensure that the aluminum cable can completely penetrate into the connection hole 21, but also the problem of overlarge void ratio caused by overlarge difference between the aperture of the connection hole 21 and the outer diameter of the aluminum cable is avoided, thereby ensuring the crimping quality.
Through the arrangement, the copper-aluminum transition terminal can realize conversion connection of copper cables and aluminum cables, the auxiliary wire passing structure can assist the aluminum cables to penetrate into the connecting holes 21 from the second end of the aluminum end connecting piece 20, so that the number of leakage wires can be reduced, on one hand, the problem of abnormal temperature rise and power consumption increase caused by excessive number of the leakage wires is avoided, and therefore the operation stability of the photovoltaic system is ensured, on the other hand, the void ratio in the connecting holes 21 can be reduced, the problem of loose cable structure caused by excessive void ratio is avoided, and therefore, a plurality of cable cores are uniformly arranged in the connecting holes 21, and are stressed uniformly during crimping, so that the crimping quality is ensured.
In the embodiment of the present utility model, when the copper-aluminum transition terminal is in a perforated structure, the copper end connector 10 is provided with an insertion hole through which the cable passes, and the copper end connector 10 may also be provided with an auxiliary wire passing structure alone.
In another embodiment of the present utility model, when the copper-aluminum transition terminal is in a pin structure, only the auxiliary wire passing structure is provided on the aluminum end connector 20. The copper-aluminum transition terminal arranged in the way can be of a pin type structure or a perforation type structure, and has universality.
Example 1
As shown in fig. 1, in the first embodiment of the present utility model, the auxiliary wire passing structure includes an auxiliary member 30 provided at the second end of the aluminum end connection member 20, the auxiliary member 30 having a wire passing passage 31 communicating with the connection hole 21, and the outer contour of the projection of the wire passing passage 31 being located outside the projection of the connection hole 21 in a direction perpendicular to the central axis of the connection hole 21.
In the above-described technical solution, the auxiliary member 30 and the aluminum end connector 20 are detachably connected. Therefore, the auxiliary piece 30 is additionally arranged outside the copper-aluminum transition terminal, the specification and the size of the existing product are not required to be changed, the auxiliary piece 30 is lengthened, bending of the copper-aluminum transition terminal and a plurality of cable cores of the cable can be restrained, and the cable is prevented from being broken after being stressed.
Through above-mentioned setting, auxiliary member 30 can make many cable cores gather, also can play the effect of direction to the cable, is convenient for penetrate connecting hole 21 with many cable cores as far as possible, avoids appearing the problem of "leaking out".
As shown in fig. 1, in the first embodiment of the present utility model, the inner diameter of the wire passing channel 31 gradually decreases along the end of the auxiliary member 30 away from the aluminum end connector 20 to the end where the aluminum end connector 20 is located.
With the above arrangement, the auxiliary member 30 is provided in the shape of a "bell mouth".
Alternatively, the auxiliary element 30 may be adapted for use in various threading forms, such as circular arcs, right angles, petals.
Alternatively, the auxiliary member 30 may be manufactured through various processes such as stamping, turning, etc.
Preferably, the auxiliary element 30 is made of plastic, such as PVC (polyvinyl fluoride) or PPE (polypropylene) material.
Example two
As shown in fig. 2, in the second embodiment of the present utility model, a chamfer 25 is formed on the inner wall of the second end of the aluminum end connecting piece 20, and the chamfer 25 forms an auxiliary wire passing structure;
in the above-described technical solution, the inner diameter dimension of the smaller inner diameter end of the chamfer 25 is the same as the inner diameter dimension of the connecting hole 21. The chamfer 25 can enable a plurality of cable cores to be gathered, can also play a role in guiding cables, is convenient for a plurality of cable cores to penetrate into the connecting hole 21, and avoids the problem of 'leaking wires'.
In another embodiment of the present utility model, an auxiliary member 30 may be provided at the second end of the aluminum end connector 20, and the opening end of the auxiliary member 30 may be provided with a chamfer 25.
Example III
As shown in fig. 3 and 4, in the third embodiment of the present utility model, the auxiliary wire passing structure includes a wire passing groove 22 communicating with the connection hole 21, the wire passing groove 22 is opened on the aluminum end connector 20, the wire passing groove 22 extends from the edge of the second end of the aluminum end connector 20 toward the first end of the aluminum end connector 20, and the length of the wire passing groove 22 is smaller than the length of the aluminum end connector 20.
In the above technical solution, the width of the wire passing groove 22 is smaller than or equal to the outer diameter of the cable, and by setting the wire passing groove 22, which is equivalent to increasing the size of the opening of the aluminum end connector 20, the exposed cable core of the cable is conveniently pressed into the connecting hole 21 from the wire passing groove 22, so that the problem of "wire leakage" is avoided, and the void ratio of the connecting hole 21 is reduced.
Preferably, the wire passing groove 22 is an elongated groove.
Example IV
As shown in fig. 5 and 6, in the fourth embodiment of the present utility model, the aluminum end connector 20 is further provided with a chamfer surface 23, the chamfer surface 23 is provided with an opening 24 communicating with the connecting hole 21, and the opening 24 forms an auxiliary wire passing structure.
Through the above-mentioned setting, through the opening that increases aluminium end connecting piece 20, the cable of being convenient for penetrates connecting hole 21, avoids appearing "leaky line" problem.
Preferably, the angle α between the plane in which the chamfer surface 23 lies and the central axis of the connecting hole 21 is in the range of 15 ° to 60 °.
The embodiment of the utility model also provides a copper-aluminum transition assembly for the photovoltaic. The copper-aluminum transition assembly for photovoltaic comprises a copper cable 100, an aluminum cable 200, an outer sheath and the copper-aluminum transition terminal 300, wherein the copper cable 100 and the aluminum cable 200 comprise a plurality of cable cores, a first end of the copper cable 100 is electrically connected with the copper end connector 10, and a second end of the copper cable 100 is configured to be electrically connected with a homogeneous electrical element in a photovoltaic system; a first end of the aluminum cable 200 is electrically connected to the aluminum end connector 20 and a second end of the aluminum cable 200 is configured to be electrically connected to a homogeneous electrical element in a photovoltaic system. Wherein the copper-aluminum transition assembly for photovoltaic use may employ the copper-aluminum transition terminal 300 described above and illustrated in fig. 1 or 2; of course, copper aluminum transition terminals as shown in fig. 3 or 5 may also be used.
The copper cable was made of a material having a cross-sectional area of 4mm 2 Or 6mm 2 According to the relevant standards, aluminum cables employ class 5 cables (i.e., 6mm in cross-sectional area 2 A cable with 84 cores and 0.3mm diameter per core).
It should be noted that, the electrical components include connection terminals, cables, and the like, and the homogeneous components are made of aluminum or copper.
In the technical scheme, the outer sheath is coated outside the copper-aluminum transition terminal, so that the copper-aluminum transition terminal is protected and insulated. A second end of the copper cable 100 is electrically connected to a photovoltaic string in a photovoltaic power plant and a second end of the aluminum cable 200 is electrically connected to a combiner box in the photovoltaic power plant.
In one embodiment of the utility model, the copper-aluminum transition assembly for a photovoltaic further comprises a sleeve having an outer diameter configured to fit an inner diameter of the connection hole, the sleeve being sleeved around an outer circumference of the first end of at least one of the copper cable 100 and the aluminum cable 200.
In the technical scheme, the sleeve is made of an insulating material, has the effects of insulation, dust prevention, water prevention and aging resistance, and can be made of PC, PPE, PA or other materials.
Through above-mentioned setting, the cover pipe is established in the periphery of many cable cores, can integrate many cable cores into a whole, and the sleeve pipe penetrates connecting hole 21 can be with many cable cores all penetrating connecting hole 21, avoids the problem of "leaking out" appearing in the in-process of threading.
In one embodiment of the utility model, the first end of at least one of the copper cable 100 and the aluminum cable 200 is pre-processed by soldering or gluing to form a single piece of the plurality of cable cores.
Through the arrangement, the cable is preformed in a tin-stamping or gluing mode, so that a plurality of cable cores form a whole, and the problem of 'leakage line' caused by softness of the cable and excessive core numbers is avoided.
In another embodiment of the utility model, class 1 or class 2 cables may also be used, and when class 2 cables are used, 19-core or 7-core or 1-core cables may be used.
The copper-aluminum transition component for the photovoltaic has all the technical characteristics and all the technical effects of the copper-aluminum transition terminal, and is not repeated here.
From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: the transition connection of copper cable and aluminum cable can be realized to copper aluminum transition terminal, and supplementary wire passing structure can assist aluminum cable to penetrate the connecting hole by the second end of aluminum terminal connecting piece, can reduce the leaky line quantity like this, avoids the unusual problem of temperature rise because of the leaky line quantity is too big, also can reduce the void fraction in the connecting hole, avoids the loose problem of cable structure because of the void fraction is too big to improve crimping quality. Through optimizing copper aluminum transition terminal's structure, perhaps advance the plastic to the cable, realize the effect of being convenient for the threading, avoid the unusual or hidden danger that reduces the crimping quality of temperature rise because of the many causes of leakage wire quantity, improve construction convenience simultaneously, improve the efficiency of construction.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A copper aluminum transition terminal, comprising:
a copper end connection (10);
an aluminum end connector (20), a first end of the copper end connector (10) is configured to be electrically connected with a first homogeneous electrical element, a second end of the copper end connector (10) is connected with the first end of the aluminum end connector (20), a second end of the aluminum end connector (20) is configured to be electrically connected with a second homogeneous electrical element, and a connecting hole (21) for a cable to penetrate is formed in the aluminum end connector (20); and
an auxiliary wire passing structure is arranged on the aluminum end connector (20), and the auxiliary wire passing structure is configured to assist the cable to enter the connecting hole (21).
2. Copper aluminum transition terminal according to claim 1, characterized in that the auxiliary wire passing structure comprises an auxiliary member (30) arranged at the second end of the aluminum end connection member (20), the auxiliary member (30) having a wire passing channel (31) communicating with the connection hole (21), the projected outer contour of the wire passing channel (31) being located outside the projection of the connection hole (21) in a direction perpendicular to the central axis of the connection hole (21).
3. Copper aluminum transition terminal according to claim 2, characterized in that the inner diameter of the wire passage (31) gradually decreases along the end of the auxiliary member (30) remote from the aluminum end connector (20) to the end where the aluminum end connector (20) is located.
4. The copper aluminum transition terminal according to claim 1, wherein the auxiliary wire passing structure comprises a wire passing groove (22) communicated with the connecting hole (21), the wire passing groove (22) is formed in the aluminum end connecting piece (20), the wire passing groove (22) extends from the edge of the second end of the aluminum end connecting piece (20) towards the first end of the aluminum end connecting piece (20), and the length of the wire passing groove (22) is smaller than the length of the aluminum end connecting piece (20).
5. Copper-aluminum transition terminal according to claim 1, characterized in that the aluminum end connector (20) is further provided with a chamfer surface (23), the chamfer surface (23) is provided with an opening (24) communicated with the connecting hole (21), and the opening (24) forms the auxiliary wire passing structure.
6. Copper aluminium transition terminal according to claim 5, characterized in that the angle α between the plane of the chamfer surface (23) and the central axis of the connecting hole (21) is in the range of 15 ° to 60 °.
7. The copper-aluminum transition terminal according to claim 1, wherein a chamfer (25) is provided on an inner wall of the second end of the aluminum end connecting piece (20), the chamfer (25) forming the auxiliary wire passing structure; and/or the number of the groups of groups,
the copper end connecting piece (10) is provided with an insertion hole for a cable to pass through, and the copper end connecting piece (10) is also provided with the auxiliary wire passing structure.
8. A copper-aluminum transition assembly for photovoltaic use, characterized by comprising a copper cable (100), an aluminum cable (200), an outer jacket, and a copper-aluminum transition terminal (300) of any of claims 1-7, the copper cable (100) and the aluminum cable (200) each comprising a plurality of cable cores, a first end of the copper cable (100) being electrically connected to the copper end connector (10), a second end of the copper cable (100) being configured to be electrically connectable to a homogeneous electrical element in a photovoltaic system; a first end of the aluminum cable (200) is electrically connected to the aluminum end connector (20), and a second end of the aluminum cable (200) is configured to be electrically connectable to a homogeneous electrical element in a photovoltaic system.
9. The copper-aluminum transition assembly for photovoltaic use according to claim 8, further comprising a sleeve having an outer diameter configured to fit an inner diameter of the connection hole (21), the sleeve being provided around an outer circumference of the first end of at least one of the copper cable (100) and the aluminum cable (200).
10. The copper-aluminum transition assembly for photovoltaic use according to claim 8, wherein a first end of at least one of the copper cable (100) and the aluminum cable (200) is pre-processed by soldering or gluing to form a plurality of the cable cores as a single unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161208.0U CN219106528U (en) | 2022-11-28 | 2022-11-28 | Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161208.0U CN219106528U (en) | 2022-11-28 | 2022-11-28 | Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219106528U true CN219106528U (en) | 2023-05-30 |
Family
ID=86456678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223161208.0U Active CN219106528U (en) | 2022-11-28 | 2022-11-28 | Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219106528U (en) |
-
2022
- 2022-11-28 CN CN202223161208.0U patent/CN219106528U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105977743B (en) | Double end high pressure conversion connector | |
| CN203415725U (en) | Nuclear-power low-voltage-cable terminal-type middle connection structure | |
| CN103811934B (en) | The T-type structure adapter of photovoltaic DC-to-AC converter | |
| CN219106528U (en) | Copper-aluminum transition terminal and copper-aluminum transition assembly for photovoltaic | |
| CN108806851B (en) | Special liquid cooling cable of new energy automobile direct current 600A rifle that charges | |
| CN210692834U (en) | 5G communication connector tied in a bundle | |
| CN209948136U (en) | Butt terminal | |
| CN212624907U (en) | Novel anti-siphon electric wire | |
| CN212849182U (en) | Butt joint for cable combination | |
| CN204927539U (en) | Electric terminal quick connector | |
| CN106159572A (en) | Holding wire and manufacture method thereof | |
| CN106450917A (en) | Side outgoing charging socket and connector | |
| CN205811063U (en) | Compression joint type audio frequency contact pin and USB male joint | |
| CN204333505U (en) | Safety energy-saving electric transmission terminal | |
| CN220553809U (en) | Cable joint for connecting segmented cables | |
| CN203707372U (en) | Cable connection structure for photovoltaic inverter | |
| CN219123513U (en) | Connection terminal convenient for wiring | |
| CN217334437U (en) | Connecting piece for main cable and branch cable of solar photovoltaic cable | |
| CN219329454U (en) | Wire harness connector | |
| CN208062393U (en) | A kind of electrical fitting | |
| CN214379179U (en) | High-definition broadband chip connecting wire based on coaxiality | |
| CN221282480U (en) | Coaxial cable connector | |
| CN221041547U (en) | Branching connector | |
| CN221552280U (en) | Power line wiring module | |
| CN220154701U (en) | Tensile connecting fitting for high-voltage optical fiber cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |