CN113386600A

CN113386600A - Cable and charging pile

Info

Publication number: CN113386600A
Application number: CN202110797838.8A
Authority: CN
Inventors: 李常珞; 何英勇; 王伟; 郭水保; 石志超; 杨康; 纪克
Original assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-09-14
Anticipated expiration: 2041-07-14
Also published as: CN113386600B

Abstract

The invention provides a cable and a charging pile, relates to the technical field of cables, and aims to solve the technical problem that the existing cable is poor in heat dissipation effect. The cable comprises a sheath tube, a cooling tube and a cable core; the cooling pipe penetrates through the sheath pipe, and a cooling channel for cooling liquid to circulate is arranged in the cooling pipe; the number of the cable cores is at least one, the cable cores are arranged in the sheath tube in a penetrating way and are positioned in a cavity between the cooling tube and the sheath tube; the cooling pipe is provided with a communication hole which is used for the circulation of the cooling liquid between the cooling channel and the cavity. The cable has a good heat dissipation effect.

Description

Cable and charging pile

Technical Field

The invention relates to the technical field of cables, in particular to a cable and a charging pile.

Background

With the popularization of new energy automobiles, the requirement of users on the charging speed of the vehicles is higher and higher.

At present, the method for improving the charging speed mainly increases the charging current, and increasing the wire diameter of the cable is a more conventional choice for increasing the charging current, but increasing the wire diameter of the cable will increase the cost of the cable, and the outer diameter of the cable will be further increased, which will bring great influence to the user experience. At present, partial cable dispels the heat through the mode of liquid cooling, is equipped with the water-cooled tube in this partial cable, dispels the heat to the cable through the water-cooled tube.

However, the heat dissipation effect of the existing cable is still poor.

Disclosure of Invention

In order to solve at least one of the problems mentioned in the background art, the invention provides a cable and a charging pile, so that the cable has a good heat dissipation effect.

To achieve the above object, in a first aspect, the present invention provides a cable comprising:

sheathing a pipe;

the cooling pipe penetrates through the sheath pipe, and a cooling channel for cooling liquid to circulate is arranged in the cooling pipe;

at least one cable core is arranged, and the cable core penetrates through the sheath tube and is positioned in a cavity between the cooling tube and the sheath tube;

wherein the cooling pipe is provided with a communication hole which forms the circulation of the cooling liquid between the cooling channel and the cavity.

Further, the cable further comprises a first pipeline and a second pipeline;

the cooling pipe is provided with a first connecting hole which forms communication between the cooling channel and a first pipeline;

a second connecting hole is formed in the protecting sleeve and forms communication between the cavity and a second pipeline;

one of the first pipeline and the second pipeline is used for flowing in cooling liquid, and the other of the first pipeline and the second pipeline is used for flowing out cooling liquid.

Further, the communication hole and the first connection hole are respectively located on both ends of the cooling pipe;

the second connecting hole is located at one end, close to the first connecting hole, of the protective sleeve.

Further, the cable further comprises a connecting piece, wherein the connecting piece comprises a piece body and an extension section;

the extension section is connected with the piece body and penetrates through the first connecting hole;

a first passage is arranged on the extension section and is communicated with the cooling channel and the first pipeline;

and a second passage is arranged on the part body and is communicated with the cavity and the second pipeline.

Furthermore, a slot is arranged on the piece body;

the extension section is positioned on the other opposite side of the piece body relative to one side of the piece body, which is provided with the slot;

the second passage penetrates through the bottom surface of the slot, and the first passage penetrates through the bottom surface of the slot and the extension section.

Furthermore, the cable further comprises a connector, wherein a first mounting hole and a second mounting hole are formed in the connector, and the first mounting hole and the second mounting hole respectively penetrate through the connector;

the joint is inserted into the slot, the first mounting hole is opposite to the first passage, and the second mounting hole is opposite to the second passage;

the first pipeline is communicated with the first mounting hole, and the second pipeline is communicated with the second mounting hole.

Furthermore, be equipped with the internal thread on the inner wall of slot, be equipped with the external screw thread on the periphery of joint, the external screw thread with the internal thread spiro union.

Further, the cable core of the cable at least comprises a ground wire, a high-voltage positive wire, a signal wire harness and a high-voltage negative wire.

Furthermore, the cable core comprises a conductor and an insulating sheath, and the insulating sheath is coated on the outer layer of the conductor.

In a second aspect, the invention provides a charging post comprising a cable as described above.

According to the cable and the charging pile provided by the invention, the cable is provided with the protective sleeve and the cooling pipe, the cable core is arranged in the cavity between the protective sleeve and the cooling pipe, the cooling channel is arranged in the cooling pipe, the cooling channel is communicated with the cavity through the communicating hole, and the cooling liquid can be exchanged between the cooling channel and the cavity from the communicating hole, namely, the cable core can be directly contacted with the cooling liquid, so that the heat exchange between the cable core and the cooling liquid can be quicker and more sufficient, namely, the cooling liquid can more quickly take the heat of the cable core out, and the cable has a better heat dissipation effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an axial cross-sectional view of a cable according to one embodiment of the present invention;

FIG. 2 is a radial cross-sectional view of a cable provided in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic view of a connector according to an embodiment of the present invention.

Description of reference numerals:

1-sheathing a pipe;

101-a second connection hole;

2-a cooling pipe;

201-cooling channels;

202-communicating hole;

203-a first connection hole;

3-a cable core;

4-a cavity;

51-a first conduit;

52-second conduit;

6-connecting piece;

61-piece body;

62-extension section;

601-a first pathway;

602-a second pathway;

603-slot;

7-a linker;

701-a first mounting hole;

702-a second mounting hole;

81-a first sealing ring;

82-a second sealing ring;

83-third seal ring.

Detailed Description

When the charging current of the cable is increased, the wire diameter of the cable generally needs to be increased to avoid damage of the cable due to overheating, but increasing the wire diameter of the cable increases the cost of the cable, and also increases the outer diameter of the cable, which causes inconvenience in use.

At present, the heat dissipation capacity of a part of cables is improved by increasing the mode of a water-cooling pipe, so that the charging current of the cables is increased under the condition that the cables are not thickened. The existing cable is added with a water-cooling tube in two modes, wherein the water-cooling tube comprises an inner tube and an outer tube which are nested with each other, each cable core of the cable penetrates through the inner tube, cooling liquid penetrates between the inner tube and the outer tube, heat generated by the cable core is transferred to the inner tube, and then the heat is transferred to the cooling liquid through the inner tube; and secondly, the cable comprises a sheath and a cable core which is arranged in the sheath in a penetrating manner, the water-cooling tube is also arranged in the sheath in a penetrating manner and is contacted with the cable core, the cooling liquid passes through the water-cooling tube, and the heat generated by the cable core is transferred to the tube wall of the water-cooling tube and then transferred to the cooling liquid through the tube wall. Because the heat of the cable core needs to be transferred to the cooling liquid through the inner pipe or the pipe wall, the heat transfer efficiency between the cable core and the cooling liquid is poor, and the heat dissipation effect of the cable is poor.

In order to solve the problems, the invention provides a cable, wherein a cavity is arranged between a cooling pipe and a protective sleeve, each cable core is arranged in the cavity in a penetrating mode, the cooling pipe is provided with a cooling channel and a communication hole, the communication hole is communicated with the cooling channel and the cavity, cooling liquid in the cooling channel can enter the cavity through the communication hole, the cooling liquid can be in direct contact with the cable core, heat of the cable core can be transferred to the cooling liquid more quickly and sufficiently, and therefore the heat dissipation effect of the cable core can be improved.

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

According to the first embodiment of the present invention, as shown in fig. 1 and 2, the cable includes a sheath tube 1, a cooling tube 2, and a cable core 3. The cooling pipe 2 is arranged in the protective sleeve 1 in a penetrating manner, and a cooling channel 201 for cooling liquid to flow through is arranged in the cooling pipe 2; the number of the cable cores 3 is at least one, the cable cores 3 penetrate through the protecting sleeve 1 and are positioned in the cavity 4 between the cooling pipe 2 and the protecting sleeve 1, the communication holes 202 are formed in the cooling pipe 2, and the communication holes 202 form circulation of cooling liquid between the cooling channel 201 and the cavity 4.

That is, in the cable of the present embodiment, as shown with reference to fig. 2, the sheath tube 1 is located at the outermost layer for providing protection to each cable core 3 of the inner layer. Cooling tube 2 wears to establish in protecting pipe 1, is formed with the cooling channel 201 that supplies the coolant liquid circulation in this cooling tube 2, and the periphery of cooling tube 2 and protecting pipe 1's inner wall interval set up, or said differently, the external diameter of cooling tube 2 is less than protecting pipe 1's internal diameter, is formed with cavity 4 between protecting pipe 1 and the cooling tube 2. Each of the above-mentioned cable cores 3 is passed through the bore between the sheath tube 1 and the cooling tube 2, wherein the cable cores 3 are independent lines for performing the function of a cable, for example, in the case of a cable for charging, each cable core 3 may include a positive electrode line, a negative electrode line, a signal wire harness, and the like.

Referring to fig. 2, the communication hole 202 penetrates the side wall of the cooling pipe 2 so that the cooling passage 201 communicates with the cavity 4, and the coolant can be exchanged between the cooling passage 201 and the cavity 4, that is, the coolant can flow from the cooling passage 201 into the cavity 4 and also from the cavity 4 into the cooling passage 201.

In the cable of the present embodiment, the sheath tube 1 and the cooling tube 2 are provided, the cable core 3 is inserted between the sheath tube 1 and the cooling tube 2, and the communication hole 202 is provided in the cooling tube 2. The coolant flows into the cooling channel 201 from the outside, flows into the cavity 4 through the communication hole 202, directly contacts the respective cable cores 3 in the cavity 4, and then flows to the outside, thereby taking out the heat of the respective cable cores 3.

Because the coolant liquid is with each cable core 3 direct contact in cavity 4, make coolant liquid and cable core 3 can be faster and more abundant carry out the heat exchange, also the heat of each cable core 3 can be more rapid, more abundant transmission to the coolant liquid to be taken out by the coolant liquid, make the cable of this embodiment have better radiating effect. Compared with the existing cable, because the cable of this embodiment has better radiating effect, it can have bigger charging current under the same size, or, when having the same charging current, the cable of this embodiment can have less external diameter, facilitates the use.

It should be noted that the cooling liquid may also flow into the cavity 4 and flow out from the cooling channel 201, which has the same principle as the above-mentioned cooling liquid flowing into the cavity 4 from the cooling channel 201, and this embodiment will not be described again, and the following description of this embodiment will take the case where the cooling liquid flows into the cooling channel 201 and flows out from the cavity 4 as an example.

On the basis of the above structure, the embodiment also provides a structure which can enable the cable to further have a better heat dissipation effect. Specifically, in the present embodiment, referring to fig. 2 and 3, a first connection hole 203 is provided on the cooling pipe 2, and the first connection hole 203 constitutes communication between the cooling passage 201 and the first pipeline 51; a second connecting hole 101 is formed in the protective sleeve 1, and the second connecting hole 101 forms communication between the cavity 4 and the second pipeline 52; one of the first and

second pipes

51 and 52 is used for the inflow of the cooling fluid, and the other of the first and

second pipes

51 and 52 is used for the outflow of the cooling fluid.

In the present embodiment, referring to fig. 2 and 3, the communication hole 202 and the first connection hole 203 are respectively located on both ends of the cooling pipe 2, and the second connection hole 101 is located on one end of the sheathing pipe 1 near the first connection hole 203.

In the present embodiment, specifically, the first pipeline 51 is used for the inflow of the cooling liquid, and the second pipeline 52 is used for the outflow of the cooling liquid; that is, the external coolant flows into the cooling passage 201 through the first pipe 51 by the water pump, flows into the cavity 4 through the communication hole 202, and then flows out to the outside through the second pipe 52. It should be noted that, when the cooling liquid enters from the cavity 4 and flows out from the cooling channel 201, the second pipeline 52 is used for the cooling liquid to flow in, and the first pipeline 51 is used for the cooling liquid to flow out.

Based on the above structure, the coolant flows in the direction shown by the arrow in fig. 2, the coolant flows from the first pipe 51 into one end of the cooling passage 201, and flows from the communication hole 202 at the other end of the cooling passage 201 to the cavity 4, and the coolant flowing into the cavity 4 flows in the direction of the second connection hole 101 and flows out through the second pipe 52. That is, in the present embodiment, by providing the communication hole 202 and the first connection hole 203 at both ends of the cooling pipe 2, respectively, and providing the second connection hole 101 at one end of the sheathing pipe 1 near the first connection hole 203, the cooling liquid can be sufficiently flowed in the cable, and thus, a good cooling effect can be provided for each cable core 3 in the cable.

It should be noted that the first connection hole 203 and the communication hole 202 are respectively located at both ends of the cooling pipe 2, which means that the first connection hole 203 is located at one side of the midpoint of the cooling pipe 2 and the communication hole 202 is located at the other side of the midpoint of the cooling pipe 2 in the axial direction of the cooling pipe 2. And the second coupling hole 101 is located at an end of the shield pipe 1 near the second coupling hole 101, which means that the second coupling hole 101 is located at a side of a midpoint of the shield pipe 1 near the first coupling hole 203 along an axial direction of the shield pipe 1.

On the basis of providing the first connection hole 203 and the second connection hole 101 as described above, the present embodiment further provides a structure capable of facilitating the use of the cable. In particular, the cable of the present embodiment further comprises a connecting member 6, wherein the connecting member 6 comprises a member body 61 and an extension section 62. The extension section 62 is connected with the piece body 61 and is arranged in the first connecting hole 203 in a penetrating way; a first passage 601 is arranged on the extension section 62, and the first passage 601 is communicated with the cooling channel 201 and the first pipeline 51; the body 61 is provided with a second passage 602, and the second passage 602 communicates the cavity 4 and the second pipe 52.

That is, in the cable of the present embodiment, the first pipeline 51 and the second pipeline 52 can be respectively communicated with the cooling channel 201 and the cavity 4 through the connecting member 6, and compared with the scheme that the connecting elements communicated with the first pipeline 51 and the second pipeline 52 are separately provided on the cable, the scheme of the present embodiment can simplify the structure of the cable, and facilitate the installation of the first pipeline 51 and the second pipeline 52 on the cable.

The present embodiment provides a connecting member 6 with a better structure, and specifically, referring to fig. 2 and 3, the member body 61 of the present embodiment is cylindrical, the extension section 62 of the present embodiment is cylindrical, and the diameter of the extension section 62 is smaller than that of the member body 61; a slot 603 is formed at one end of the body 61, and an extension section 62 is fixedly mounted at the other end of the body 61 opposite to the end of the body 61 at which the slot 603 is formed. Or, the body 61 and the extension section 62 are connected in series, and a slot 603 is provided at the other end of the body 61 opposite to the end where the body 61 and the extension section 62 are connected. The piece body 61 is inserted and fixed in the second connecting hole 101 and is connected with the second connecting hole 101 in a sealing manner; the extension section 62 is inserted and fixed in the first connection hole 203 and is connected with the second connection hole 101 in a sealing manner.

Referring to fig. 3, the first passage 601 penetrates through the bottom surface of the slot 603 and the extension 62, and the first passage 601 penetrates through the bottom surface of the slot 603, or the first passage 601 penetrates through the bottom surface of the slot 603 beside the extension 62. Since the first passage 601 is separated from the first passage 601, the coolant can enter the cooling passage 201 through the first passage 601 and can flow out through the second passage 602 without affecting the circulation of the coolant.

The structure of the body 61 and the extension section 62 is not limited to this, and for example, the body 61 may be a square column, and the extension section 62 may also be a square column; alternatively, the body 61 is cylindrical and the extension section 62 is square-shaped cylindrical, or alternatively, the body 61 is square-shaped cylindrical and the extension section 62 is cylindrical, and the body 61 or the extension section 62 may also be polygonal or irregular-shaped cylindrical in cross section.

On the basis of the above-described connector 6, the present embodiment further provides a structure that facilitates the mounting of the first and

second pipes

51 and 52 on the connector 6. Specifically, referring to fig. 2 and 3, the cable of the present embodiment further includes a joint 7, the joint 7 is provided with a first mounting hole 701 and a second mounting hole 702, the first mounting hole 701 and the second mounting hole 702 respectively penetrate through the joint 7, the first pipeline 51 is communicated with the first mounting hole 701, and the second pipeline 52 is communicated with the second mounting hole 702.

In this embodiment, referring to fig. 3, the joint 7 can be inserted into the slot 603, and after the joint 7 is inserted into the slot 603, the first mounting hole 701 is opposite to the first passage 601, and the second mounting hole 702 is opposite to the second passage 602, so that the first pipeline 51 can be communicated with the first passage 601, that is, the first pipeline 51 is communicated with the cooling channel 201; the second mounting hole 702 is opposite to the second passage 602, i.e., the second pipe 52 communicates with the cavity 4.

In this embodiment, by arranging the joint 7, the installation of the first pipeline 51 and the second pipeline 52 on the cable can be conveniently completed by inserting the joint 7 into the slot 603, that is, the circulation of the cooling liquid in the cable is conveniently constructed, and the use of the cable is convenient.

In this embodiment, one connection between the joint 7 and the socket 603 is to form an internal thread on the inner wall of the socket 603 and an external thread on the outer circumference of the joint 7, so that the joint 7 can be fixed in the socket 603 by screwing the external thread and the internal thread.

In some embodiments, the joint 7 may be fixed in the slot 603 by a bolt, and specifically, a threaded hole may be provided on the connecting member 6, and a through hole may be provided on the joint 7, so that the joint 7 is fixed in the slot 603 by a bolt passing through the through hole and threadedly engaged with the threaded hole.

On the basis that the joint 7 and the slot 603 are connected through the external thread and the internal thread, the embodiment further provides a structure that can enable the joint 7 and the slot 603 to have a better sealing effect, and specifically, in the embodiment, referring to fig. 2 to 4, a first annular groove, a second annular groove, and a third annular groove are respectively arranged on the bottom surface of the slot 603. Wherein the first annular groove ring is arranged with the first channel, the second annular groove ring is arranged with the second channel, and the third annular groove ring is arranged with the first channel and the second channel. A first sealing ring 81 is embedded in the first annular groove, a second sealing ring 82 is embedded in the second annular groove, and a third sealing ring 83 is embedded in the third annular groove; the height of the first sealing ring 81 and the second sealing ring 82 protruding from the bottom surface of the slot 603 is greater than the height of the third sealing ring 83 protruding from the bottom surface of the slot 603.

By arranging the above-mentioned sealing rings, in the process of inserting and fixing the joint 7 into the slot 603, the end surface of the joint 7 first contacts with the first sealing ring 81 and the second sealing ring 82, compresses a certain amount of the first sealing ring 81 and the second sealing ring 82, then contacts with the third sealing ring 83, and then simultaneously extrudes the first sealing ring 81, the second sealing ring 82 and the third sealing ring 83, thereby forming the seal between the joint 7 and the slot 603.

The first seal 81 forms a seal between the first passage 601 and the first mounting hole 701, the second seal 82 forms a seal between the second passage 602 and the second mounting hole 702, and the third seal 83 is a redundant seal structure. Therefore, the joint 7 presses the first seal ring 81 and the second seal ring 82 first, and the risk of leakage of the coolant from between the first passage 601 and the first mounting hole 701 and from between the second passage 602 and the second mounting hole 702 can be reduced as compared to pressing the first seal ring 81, the second seal ring 82, and the third seal ring 83 at the same time. On the other hand, the third seal 83 is provided to prevent the coolant from leaking between the joint 7 and the socket 603 after the coolant leaks between the first passage 601 and the first mounting hole 701 or between the second passage 602 and the second mounting hole 702.

In this embodiment, the cable cores 3 are respectively a ground wire, three high-voltage positive wires, two signal wire bundles, and three high-voltage negative wires. The function of each cable core 3 can be referred to the prior art and will not be described in detail here.

In this embodiment, each of the cable cores 3 includes a conductor and an insulating sheath, and the insulating sheath covers an outer layer of the conductor. Wherein, insulating crust specifically can completely cut off the insulating crust of coolant liquid, through setting up cable core 3 to include electric conductor and insulating crust for cable core 3 is in the contact with the coolant liquid, does not influence the normal work and the use of cable core 3.

In summary, in the cable of the present embodiment, by providing the sheath tube 1 and the cooling tube 2, the cable core 3 is disposed in the cavity 4 between the sheath tube 1 and the cooling tube 2, the cooling channel 201 is disposed in the cooling tube 2, the cooling channel 201 and the cavity 4 are communicated via the communication hole 202, and the cooling liquid can be exchanged between the cooling channel 201 and the cavity 4 from the communication hole 202, that is, the cable core 3 can directly contact with the cooling liquid, so that heat exchange between the cable core 3 and the cooling liquid can be more sufficient, that is, a better cooling effect can be provided for each cable core 3 in the cable.

Example two

On the basis of the cable in the first embodiment of the invention, the second embodiment of the invention provides a charging pile; the charging post includes a cable as in embodiment one.

The electric pile that fills of this embodiment through setting up like the cable of embodiment one, because the cable of embodiment one has better radiating effect to inside each cable core, consequently, when this cable had the same charging current with current cable, the cable of this embodiment can adopt the cable core of minor diameter, makes this cable have minor diameter, facilitates the use.

In the description of the embodiments of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings 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 is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable, comprising:

sheathing a pipe;

2. The cable of claim 1, further comprising a first conduit and a second conduit;

3. The cable according to claim 2, wherein said communication hole and said first connection hole are respectively located on both ends of said cooling pipe;

4. The cable of claim 3, further comprising a connector body and an extension;

5. The cable according to claim 4, wherein said body is provided with a slot;

6. The cable according to claim 5, further comprising a connector, wherein the connector is provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole respectively penetrate through the connector;

7. The cable according to claim 6, wherein an internal thread is provided on an inner wall of the insertion groove, and an external thread is provided on an outer circumference of the joint, the external thread being screwed with the internal thread.

8. The cable according to any one of claims 1 to 7, wherein the cable core of the cable comprises at least a ground wire, a high voltage positive wire, a signal wire bundle and a high voltage negative wire.

9. A cable according to any one of claims 1 to 7, wherein the cable core comprises an electrical conductor and an insulating sheath, the insulating sheath being coated over an outer layer of the electrical conductor.

10. A charging post, characterized in that it comprises a cable according to any one of claims 1 to 9.