CN220107017U - Cable connector and photovoltaic power station - Google Patents

Abstract

The utility model discloses a cable connector and a photovoltaic power station, and belongs to the technical field of electrical equipment. The cable connector includes: the connecting terminal is used for being connected with the first cable and the second cable which are made of different materials; the sheath, the sheath cover is located the outside of connecting terminal, the axial both ends of sheath all are equipped with the sealing member, and the both ends the sealing member is used for sealing respectively first cable with the second cable, the sheath has limit structure, limit structure is used for limiting first cable to stretch into length in the sheath. According to the cable connector provided by the embodiment of the utility model, the limiting structure is arranged, so that the sheath can effectively protect the first cable and the second cable, and water vapor is prevented from entering the sheath to corrode the connecting terminal, the cable cores of the first cable and the second cable.

Description

Cable connector and photovoltaic power station

Technical Field

The utility model belongs to the technical field of electrical equipment, and particularly relates to a cable connector and a photovoltaic power station.

Background

Along with the continuous excavation of photovoltaic power plant cost reduction synergistic potential, most cables of photovoltaic power plant are aluminum cables, but some traditional photovoltaic power plant components are connected to the collection flow box, or the components are connected to the side of the string inverter and still adopt copper cables, so that the copper cables and the aluminum cables are connected by connecting terminals and are installed in the sheath to protect the junction of the two types of cables. However, in the related art, the position of the connecting terminal in the sheath cannot be clarified during installation, and the situation that the connecting terminal is close to or even directly located at two ends of the sheath can occur in actual assembly, so that the sheath cannot effectively protect the connection part of two types of cables, for example, the sealing rings at two ends of the sheath cannot effectively seal the cables under the situation.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the cable connector and the photovoltaic power station provided by the utility model can ensure that the sheath can effectively protect the first cable and the second cable and prevent water vapor from entering the sheath to corrode the connecting terminal and the wire cores of the first cable and the second cable.

In a first aspect, the present utility model provides a cable connector comprising:

the connecting terminal is used for being connected with a first cable and a second cable which are made of different materials, and the diameter of the first cable is larger than that of the second cable;

the sheath, the sheath cover is located the outside of connecting terminal, the axial both ends of sheath all are equipped with the sealing member, and the both ends the sealing member is used for sealing respectively first cable with the second cable, the sheath has limit structure, limit structure is used for limiting first cable to stretch into length in the sheath.

According to one embodiment of the utility model, the inner diameter of the limiting structure is larger than the outer diameter of the second cable and smaller than the outer diameter of the first cable or the outer diameter of the portion of the connecting terminal close to the first cable.

According to one embodiment of the present utility model, the connection terminal includes a first mounting section and a second mounting section connected in an axial direction of the sheath, and a diameter of the first mounting section is larger than a diameter of the second mounting section.

According to one embodiment of the utility model, the sheath comprises a first channel and a second channel, the diameter of the first channel is larger than that of the second channel, and the step surface between the first channel and the second channel forms the limit structure.

According to one embodiment of the utility model, a guiding structure is formed between the first mounting section and the second mounting section, the outer periphery of the guiding structure and the inner Zhou Jun of the step surface being provided with a chamfer.

According to one embodiment of the utility model, the step surface is arranged at the middle part of the sheath.

According to one embodiment of the utility model, the minimum inner diameter of the limiting structure is larger than the outer diameter of the second cable and the core diameter of the first cable, and smaller than the outer diameter of the first cable.

According to one embodiment of the utility model, the end of the limit structure remote from the end of the sheath has a smaller diameter than the end of the limit structure close to the end of the sheath.

According to one embodiment of the utility model, the limiting structure comprises a plurality of connecting strips arranged at intervals along the circumferential direction, a first end of each connecting strip is connected with the inner wall of the sheath, a second end of each connecting strip is of a cantilever structure, and the second ends of the connecting strips are arranged close to the axis of the sheath.

According to one embodiment of the utility model, the jacket is provided with sealing elements at both axial ends, the sealing elements at both ends being used for sealing the first cable and the second cable, respectively.

In a second aspect, the present utility model provides a photovoltaic power plant comprising:

a cable connector according to any one of the preceding claims;

the cable connector comprises a first cable and a second cable, wherein the first cable and the second cable are connected with the cable connector, the first cable and the second cable are different in material, and the diameter of the first cable is larger than that of the second cable.

According to the photovoltaic power station provided by the embodiment of the utility model, by adopting any one of the cable connectors, the sheath can be ensured to effectively protect the first cable and the second cable, and water vapor is prevented from entering the sheath to corrode the connecting terminal, the wire cores of the first cable and the second cable.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a cable connector according to an embodiment of the present utility model;

FIG. 2 is a second schematic diagram of a cable connector according to an embodiment of the present utility model;

FIG. 3 is a third schematic diagram of a cable connector according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a cable connector according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a cable connector according to an embodiment of the utility model.

Reference numerals:

sheath 100, threaded portion 110, seal 120, first channel 130, second channel 140, nut 150, connecting strip 160;

connection terminal 200, first mounting section 210, second mounting section 220, mounting notch 230;

a first cable 300, a second cable 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A cable connector and a photovoltaic power plant according to embodiments of the present utility model are described below with reference to fig. 1-5.

As shown in fig. 1 to 5, according to the cable connector provided by the embodiment of the present utility model, the cable connector includes a connection terminal 200 and a sheath 100, wherein the connection terminal 200 is used for connecting a first cable 300 and a second cable 400 which are made of different materials, and the diameter of the first cable 300 is larger than that of the second cable 400.

As shown in fig. 1 to 5, the two axial ends of the connection terminal 200 are respectively connected with the first cable 300 and the second cable 400 made of different materials, so that the first cable 300 and the second cable 400 are connected to form the same line, and the diameters of the first cable 300 and the second cable 400 have a certain difference, for example, the first cable 300 is an aluminum cable, the second cable 400 is a copper cable, and the diameter of the aluminum cable is larger than that of the copper cable under the condition that the allowable maximum current is the same because the first cable 300 and the second cable 400 need to pass the same current in the working process and the materials of the first cable 300 and the second cable 400 are different.

As shown in fig. 1 to 5, the first and second cables 300 and 400 each include a sheath and a wire core, the sheath being sleeved outside the wire core to protect the wire core, and when the first and second cables 300 and 400 are connected to the connection terminals 200, respectively, part of the sheath of the ends of the first and second cables 300 and 400 is removed, and is connected to the connection terminals 200 through the wire core.

As shown in fig. 1 to 5, the sheath 100 is sleeved outside the connection terminal 200, the two axial ends of the sheath 100 are provided with screw thread parts 110 for being matched and connected with the nut 150, and the two axial ends of the sheath 100 are respectively an inlet end and an outlet end of the sheath 100.

As shown in fig. 1 to 5, the sheath 100 has a limiting structure, the limiting structure is located inside the sheath 100, and the limiting structure is used for limiting the extending length of the first cable 300 into the sheath 100, and the extending length can enable the connection terminal 200 to be located at a position away from two axial ends of the sheath 100.

In the actual implementation process, as shown in fig. 1-5, the first cable 300 and the second cable 400 are connected with the connection terminal 200, one end of the second cable 400 of the connected whole cable is penetrated into the sheath 100 from the wire inlet end of the sheath 100, is penetrated out from the wire outlet end of the sheath 100 through the sheath 100, and continuously pulls the second cable 400 from the wire outlet end of the sheath 100 until the connection terminal 200 completely enters the sheath 100 from the wire inlet end of the sheath 100, at this time, the first cable 300 also penetrates through the wire inlet end of the sheath 100 to enter the sheath 100, the length of the second cable 400 extending into the sheath 100 is limited by the limiting structure, so that the connection terminal 200 can be positioned between the two sealing members 120, and because the axial length of the sheath 100 is smaller than the length of the whole cable, when the connection terminal 200 is positioned at the positions of the two axial ends of the sheath 100, the two ends of the sheath 100 can effectively protect the first cable 300 and the second cable 400, after the first cable 300, the second cable 400 and the connection terminal 200 are installed through the limiting structure, and the connection terminal 150 are connected with the first cable 300 and the two ends of the first cable 400 through the nuts 150 and the connection terminal 400.

Since the sheath 100 is in a invisible structure, by providing the limiting structure, the length of the second cable 400 extending into the sheath 100 can be limited during assembly, that is, the position of the connection terminal 200 in the sheath 100 is limited, so that the connection terminal 200 is located at the position of the sheath 100 away from the two axial ends, and water vapor is prevented from entering the sheath 100 to corrode the connection terminal 200, the first cable 300 and the wire core of the second cable 400.

According to the cable connector provided by the embodiment of the utility model, by arranging the limiting structure, the sheath 100 can be ensured to effectively protect the first cable 300 and the second cable 400, and water vapor is prevented from entering the sheath 100 to corrode the wire cores of the connecting terminal 200, the first cable 300 and the second cable 400.

In some embodiments, the jacket is provided with seals at both axial ends, the seals at both ends being used to seal the first and second cables, respectively.

As shown in fig. 1 to 5, the two axial ends of the sheath 100 are provided with sealing members 120, the sealing members 120 may be sealing rings, the sealing members 120 at the two ends are used for sealing the first cable 300 and the second cable 400, respectively, the whole sheath 100 is in a hollow cylindrical structure, the sealing members 120 are installed inside the two axial ends of the sheath 100,

in the actual implementation, the two sealing members 120 are respectively installed inside the two axial ends of the sheath 100, and the connection terminal 200 is located at a position far from the two ends in the sheath 100 through the limiting structure in the assembly process, that is, the connection terminal 200 is located between the sealing members 120 at the two ends, so that the first cable 300 and the second cable 400 are respectively located at the sealing members 120 when the assembly is completed, that is, the first cable 300 and the second cable 400 are sealed by the sealing members 120 at the two ends.

By arranging the sealing element 120, the first cable 300 and the second cable 400 can be respectively sealed, and the sealing element is matched with the limiting structure, so that the sealing effect that the sealing element 120 cannot generate the sealing effect on the first cable 300 and the second cable 400 when the connecting terminal 200 is positioned at the sealing element 120 can be avoided.

In some embodiments, as shown in fig. 1-5, the inner diameter of the spacing structure is greater than the outer diameter of the second cable 400 and less than the outer diameter of the first cable 300 or the outer diameter of the portion of the connection terminal 200 near the first cable 300.

As shown in fig. 1 to 5, the limiting structure is located inside the sheath 100 and connected to the inner wall of the sheath 100, and the limiting structure is generally annular overall.

In an actual implementation process, one end of the second cable 400 of the whole cable connected by the first cable 300, the second cable 400 and the connection terminal 200 is penetrated into the sheath 100 from the wire inlet end of the sheath 100, and since the inner diameter of the limiting structure is larger than the outer diameter of the second cable 400, the second cable 400 penetrates out of the wire outlet end of the sheath 100 after penetrating through the limiting structure, and since the inner diameter of the limiting structure is smaller than the outer diameter of the first cable 300 or the outer diameter of the portion of the connection terminal 200 close to the first cable 300, when the second cable 400 penetrates through the limiting structure, the portion of the connection terminal 200 close to the first cable 300 or the portion of the first cable 300 cannot penetrate through the limiting structure, that is, the limiting structure applies a certain resistance to the portion of the connection terminal 200 close to the first cable 300.

When the worker pulls the second cable 400 to move the whole cable and experiences a significant resistance force to move the whole cable, the worker can fix the first cable 300, the second cable 400 and the connection terminal 200 by the nuts 150 and the screw portions 110 on the sheath 100, which means that the connection terminal 200 or the first cable 300 is blocked by the limiting structure, i.e. the connection terminal 200 is located between the two end sealing members 120 and the two end sealing members 120 seal the first cable 300 and the second cable 400 respectively.

The length of the first cable 300 extending into the sheath 100 is limited by utilizing the difference between the inner diameter of the limiting structure and the outer diameter of the first cable 300 or the outer diameter of the part of the connecting terminal 200 close to the first cable 300, and a worker can judge whether the extending length of the first cable 300 is close to the maximum value through hand perception, and other operations are not needed in the process of installing the cable, so that the installation process is simple.

In some embodiments, as shown in fig. 1-5, the connection terminal 200 includes a first mounting section 210 and a second mounting section 220 connected in an axial direction of the sheath 100, and the first mounting section 210 has a diameter greater than that of the second mounting section 220.

1-5, an end of the first mounting section 210 far from the second mounting section 220 is provided with a mounting notch 230 along the axial direction, an end of the second mounting section 220 far from the first mounting section 210 is also provided with a mounting notch 230 along the axial direction, and the mounting notch 230 of the first mounting section 210 is spliced with the wire core of the first cable 300 and is fixed by welding or other manners; the mounting notch 230 of the second mounting section 220 is plugged into the core of the second cable 400 and the two are welded or otherwise secured.

Since the diameter of the first cable 300 is larger than that of the second cable 400, setting the diameter of the first mounting section 210 to be larger than that of the second mounting section 220 can make the thicknesses of the portions of the first and second mounting sections 210 and 220 after the mounting notches 230 are removed uniform, i.e., ensure the stability of connection of the first and second mounting sections 210 and 220 with the first and second cables 300 and 400, respectively, and avoid breakage or other phenomena occurring during the mounting process due to the thinner connection terminal 200.

In some embodiments, as shown in fig. 1-3, the sheath 100 includes a first channel 130 and a second channel 140, the diameter of the first channel 130 is greater than the diameter of the second channel 140, and the stepped surface between the first channel 130 and the second channel 140 forms a stop structure.

As shown in fig. 1 to 3, the hollow structure of the sheath 100 is divided into a first channel 130 and a second channel 140, the diameter of the first channel 130 is larger than the diameter of the first installation section 210 in the first cable 300 and the connection terminal 200, the diameter of the second channel 140 is larger than the diameter of the second installation section 220 in the second cable 400 and the connection terminal 200, at this time, one end of the sheath 100 close to the first channel 130 is a wire inlet end, and one end close to the second channel 140 is a wire outlet end.

As shown in fig. 1 to 3, since the first channel 130 and the second channel 140 have a diameter difference, a step surface is formed between the first channel 130 and the second channel 140, the step surface is a limit structure, the length of the first channel 130 is greater than the length of the first mounting section 210, and the length of the second channel 140 is greater than the length of the second mounting section 220, and meanwhile, a diameter difference exists between the first mounting section 210 and the second mounting section 220 in the connection terminal 200, so that a step surface is also formed between the first mounting section 210 and the second mounting section 220, and the step surface is a guide structure of the connection terminal 200.

In the actual implementation process, the first cable 300, the second cable 400 and the connection terminal 200 are connected, the end part of the second cable 400 far away from the connection terminal 200 penetrates into the first channel 130 through the wire inlet end of the sheath 100, the second cable 400 continues to extend in until the end part of the second cable 400 passes through the second channel 140 and then penetrates out of the wire outlet end of the sheath 100, a worker pulls the second cable 400 along the axial direction, after the first installation section 210 of the connection terminal 200 completely enters the second channel 140, the step surface of the limiting structure is contacted with the step surface of the guiding structure, and the step surface of the limiting structure gives a certain resistance to the guiding structure, and when the worker cannot continuously pull the whole cable, the nut 150 and the threaded part 110 can be utilized to fix the first cable 300, the second cable 400 and the connection terminal 200.

By forming the limit structure by using the stepped surface between the first channel 130 and the second channel 140, the structure is simple and the production cost can be reduced to some extent.

It should be noted that, as shown in fig. 1-3, the outer surface of the sheath 100 is printed with arrows of the installation direction and names of the first cable 300 and the second cable 400, for example, aluminum, arrows and copper are sequentially printed in the axial direction from the inlet end of the sheath 100 to the outlet end of the sheath 100, and the tail ends of the arrows point to copper, so as to indicate the installation direction to the staff, and avoid the reduction of the installation efficiency caused by incorrect installation.

In some embodiments, as shown in fig. 1-3, the outer perimeter of the guide structure and the inner Zhou Jun of the stepped surface are provided with chamfers.

In the actual implementation process, the outer periphery of the guiding structure and the inner periphery of the step surface are both provided with chamfer angles with the same angle, in the installation process, when the step surface of the limiting structure is flush with the step surface of the guiding structure, the second cable 400 is pulled continuously along the axial direction, the chamfer surfaces of the guiding structure are gradually attached to and pressed against the chamfer surfaces of the limiting structure, and at the moment, workers cannot continuously pull the whole cable to move along the axial direction.

Through setting up the chamfer at the periphery of guide structure and the inner periphery of step face, reducible guide structure is the wearing and tearing that the in-process that axial displacement led to the fact limit structure step face, extension limit structure's life.

In some embodiments, as shown in fig. 1-3, a stepped surface is provided at a central portion of the sheath 100.

1-3, the length of the first channel 130 may be equal to the length of the second channel 140, that is, the step surface formed between the first channel 130 and the second channel 140 is located in the middle of the sheath 100, and the length of the first channel 130 may be unequal to the length of the second channel 140, but the step surface formed between the first channel 130 and the second channel 140 is located in the middle of the sheath 100.

Since the guide structure of the connection terminal 200 is located between the first mounting section 210 and the second mounting section 220, that is, the guide structure is located at the middle of the connection terminal 200, when the step surface of the guide structure and the step surface of the limit structure are in contact limit, the connection terminal 200 is located at the middle position of the sheath 100, so that it can be ensured that the connection terminal 200 must be located between the both end seals 120.

In some embodiments, as shown in fig. 4 and 5, the minimum inner diameter of the spacing structure is greater than the outer diameter of the second cable 400 and the core diameter of the first cable 300, and less than the outer diameter of the first cable 300.

As shown in fig. 4 and 5, if the limit structure has a radial deformation capability, the diameter of the connection terminal 200 may be greater than the minimum inner diameter of the limit structure; if the limit structure does not have the ability to deform in the radial direction, the diameter of the connection terminal 200 is smaller than the minimum inner diameter of the limit structure.

As shown in fig. 4 and 5, the first cable 300 and the second cable 400 are connected to the connection terminal 200 through a wire core, and the length of the exposed wire core of the first cable 300 is longer than the length of the connection portion of the first cable 300 and the connection terminal 200, that is, a section of exposed wire core is arranged between the end surface of the connection terminal 200 close to the first cable 300 and the end surface of the outer skin of the first cable 300 close to the connection terminal 200.

In the actual implementation process, if the limit structure has the capability of deforming along the radial direction and the rebound capability, and the diameter of the connection terminal 200 is larger than the minimum inner diameter of the limit structure, the second cable 400 and the second mounting section 220 of the connection terminal 200 sequentially pass through the limit structure, and the process has no resistance, when the first mounting section 210 of the connection terminal 200 passes through the limit structure, the first mounting section 210 receives the resistance of the limit structure when passing through the limit structure because the diameter of the first mounting section 210 is larger than the minimum inner diameter of the limit structure, and the limit structure deforms along the radial direction, and the resistance received by the first mounting section 210 suddenly disappears after the second cable 400 is pulled to enable the first mounting section 210 to completely pass through the limit structure, the phenomenon can judge that the connection terminal 200 completely enters the sheath 100 and is positioned between the sealing pieces 120 at two ends, and simultaneously the second cable 400 can be continuously pulled, and when the part of the first cable 300 with the outer skin passes through the limit structure, the resistance of the limit structure can also be received by the limit structure, and the position of the connection terminal 200 can be judged according to the phenomenon and the phenomenon.

If the diameter of the connection terminal 200 is smaller than the minimum inner diameter of the limiting structure, the second cable 400 and the connection terminal 200 sequentially pass through the limiting structure during the installation process, when the portion of the first cable 300 having the outer skin passes through the limiting structure, the resistance of the limiting structure is received, and the worker can obviously sense, at this time, it can be determined that the connection terminal 200 has completely entered the sheath 100 and is located between the sealing members 120 at both ends, so that the connection terminal can be fixed by the nut 150 and the threaded portion 110.

By setting the minimum inner diameter of the limiting structure to be larger than the outer diameter of the second cable 400 and the core diameter of the first cable 300 and smaller than the outer diameter of the first cable 300, the position of the connection terminal 200 can be judged by utilizing the connection characteristics between the first cable 300 and the connection terminal 200 in cooperation with the limiting structure without limiting the structure of the connection terminal 200.

In some embodiments, as shown in fig. 4 and 5, the end of the spacing structure distal from the end of the sheath 100 is smaller in diameter than the end of the spacing structure proximal to the end of the sheath 100.

Wherein, as shown in fig. 4 and 5, the limiting structure may be integrally formed as a hollow cone-shaped structure, thereby applying resistance to the outer skin of the first cable 300 by using the small diameter portion of the end of the limiting structure.

By setting the diameter of one end of the limiting structure far away from the sheath 100 to be smaller than the diameter of one end of the limiting structure close to the sheath 100, the extension length of the first cable 300 can be limited only by the small diameter part of the tail end, so that the first cable 300, the second cable 400 and the connecting terminal 200 can pass through quickly when passing through the front end of the limiting structure, and the installation efficiency is improved.

In some embodiments, as shown in fig. 4 and 5, the limiting structure includes a plurality of connection bars 160 disposed at intervals along a circumferential direction, a first end of the connection bars 160 is connected to an inner wall of the sheath 100, a second end of the connection bars 160 is in a cantilever structure, and the second end of the connection bars 160 is disposed near an axis of the sheath 100.

As shown in fig. 4 and 5, a plurality of connection bars 160 disposed at intervals along the circumferential direction are disposed obliquely from the inner wall of the sheath 100 to the axis of the sheath 100, and the connection bars 160 may have a rectangular structure or other shape structures, such as a triangle structure.

The spacing structure is formed by the connecting strips 160 arranged at intervals, so that the first cable 300 can be limited in extending length and has certain radial deformation capability and rebound capability, the diameter range of the first mounting section 210 of the connecting terminal 200 can be enlarged to a certain extent, and the application range of the sheath 100 with the spacing structure can be enlarged.

The following describes embodiments of the present utility model in detail from two different implementation angles, respectively.

1. As shown in fig. 1-3, the stepped surface formed between the first channel 130 and the second channel 140 of the sheath 100 forms a stop structure.

The step surface formed between the first channel 130 and the second channel 140 in the sheath 100 is located at the middle part of the sheath 100, the diameter of the first channel 130 is larger than that of the second channel 140, the connection terminal 200 comprises a first mounting section 210 and a second mounting section 220, the step surface formed between the first mounting section 210 and the second mounting section 220 is a guiding structure of the connection terminal 200, the periphery of the guiding structure and the inner Zhou Jun of the limiting structure are provided with chamfers, the first mounting section 210 and the second mounting section 220 are respectively used for being connected with the first cable 300 and the second cable 400, the diameter of the first cable 300 is larger than that of the second cable 400, and the chamfer surface of the step surface of the limiting structure is used for giving chamfer surface resistance to the step surface of the guiding structure so as to limit the extending length of the first cable 300 into the sheath 100.

2. As shown in fig. 4 and 5, a plurality of connection bars 160 disposed at intervals in the circumferential direction form a limit structure.

One end of the connection bar 160 is connected with the wire inlet end of the sheath 100, and the other end is obliquely arranged near the axis of the sheath 100, namely, the plurality of connection bars 160 form a conical structure, the minimum inner diameter of the conical structure is larger than the outer diameter of the second cable 400 and the wire core diameter of the first cable 300 and smaller than the outer diameter of the first cable 300, and the inner end surface of the connection bar 160 is utilized to give a certain resistance to the outer skin of the first cable 300 so as to limit the extending length of the first cable 300 into the sheath 100.

The embodiment of the utility model also provides a photovoltaic power station.

As shown in fig. 1 to 5, the photovoltaic power plant includes: a cable connector, a first cable 300 and a second cable 400 as described in any of the above.

The first cable 300 and the second cable 400 are connected to the cable connector, the materials of the first cable 300 and the second cable 400 are different, and the diameter of the first cable 300 is larger than that of the second cable 400.

The first cable 300 may be an aluminum cable, the second cable 400 may be a copper cable, and the aluminum cable and the copper cable are connected through a cable connector, so that most of the copper cables in the photovoltaic power station can be replaced by aluminum cables, and the production cost of the photovoltaic power station is reduced.

According to the photovoltaic power station provided by the embodiment of the utility model, by adopting any one of the cable connectors, the sheath 100 can be ensured to effectively protect the first cable 300 and the second cable 400, and water vapor is prevented from entering the sheath 100 to corrode the wire cores of the connecting terminal 200, the first cable 300 and the second cable 400.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A cable connector, comprising:

the connecting terminal is used for being connected with the first cable and the second cable which are made of different materials;

the sheath, the sheath cover is located the outside of connecting terminal, the sheath has limit structure, limit structure is used for limiting first cable to stretch into length in the sheath.

2. The cable connector of claim 1, wherein the inner diameter of the spacing structure is greater than the outer diameter of the second cable and less than the outer diameter of the first cable or the portion of the connection terminal adjacent the first cable.

3. The cable connector according to claim 1 or 2, wherein the connection terminal includes a first mounting section and a second mounting section connected in an axial direction of the sheath, and a diameter of the first mounting section is larger than a diameter of the second mounting section.

4. The cable connector of claim 3, wherein the jacket includes a first channel and a second channel, the first channel having a diameter greater than a diameter of the second channel, a step surface between the first channel and the second channel forming the limit feature.

5. The cable connector of claim 4, wherein a guide structure is formed between the first and second mounting sections, an outer periphery of the guide structure and an inner Zhou Jun of the step surface being provided with a chamfer.

6. The cable connector of claim 4, wherein the step surface is provided at a middle portion of the sheath.

7. The cable connector according to claim 1 or 2, wherein a minimum inner diameter of the limiting structure is larger than an outer diameter of the second cable and a core diameter of the first cable and smaller than a sheath diameter of the first cable.

8. The cable connector of claim 7, wherein an end of the spacing structure distal from the end of the sheath has a smaller diameter than an end of the spacing structure proximal to the end of the sheath.

9. The cable connector of claim 8, wherein the spacing structure comprises a plurality of connection bars disposed at intervals along a circumferential direction, a first end of the connection bars is connected to the inner wall of the sheath, a second end of the connection bars is in a cantilever structure, and the second ends of the connection bars are disposed near the axis of the sheath.

10. The cable connector according to claim 1 or 2, wherein both axial ends of the sheath are provided with sealing members, the sealing members at both ends being used for sealing the first cable and the second cable, respectively.

11. A photovoltaic power plant, comprising:

the cable connector of any one of claims 1-9;

the cable connector comprises a first cable and a second cable, wherein the first cable and the second cable are connected with the cable connector, the first cable and the second cable are different in material, and the diameter of the first cable is larger than that of the second cable.