Conductor liquid cooling self-backflow charging pile cable

Abstract

The utility model discloses a conductor liquid cooling self-backflow charging pile cable, which comprises an outer sheath, a grounding wire core, a signal wire core, a control wire core and a main wire core are arranged in the outer sheath, and the main wire core comprises a circulating cooling pipe, a power supply conductor layer arranged around the circulating cooling pipe and a power supply insulating layer extruded outside the power supply conductor layer. The circulating cooling pipe comprises an outer pipe body and an inner pipe body, a liquid inlet channel is arranged in the inner pipe body, a supporting plate is arranged between the outer pipe body and the inner pipe body, the outer pipe body, the supporting plate and the inner pipe body form a liquid outlet channel, a sealing plug is arranged at one end of the circulating cooling pipe and makes contact with the outer pipe body, and a backflow channel is arranged between the inner pipe body and the sealing plug. Liquid inlet and liquid outlet are integrated, the outer diameter of the cable can be effectively reduced, the power supply conductor layer wraps the circulating cooling pipe to achieve heat dissipation and cooling of the cable, and rapid charging can be achieved. The problems that existing liquid-cooled cable circulating pipes are separately arranged, the outer diameter of the cable is too large, and use is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the field of charging pile cables, in particular to a conductor liquid-cooled self-return charging pile cable. Background Technique

[0002] With the increasing demand for fast charging, the performance requirements for charging pile cables are also increasing. When the cable ensures fast charging, it will generate a large amount of heat, affecting current transmission and even causing safety accidents. Therefore, it is necessary to dissipate heat and cool it down.

[0003] The Chinese patent with the publication number CN212322712U discloses a high-power liquid-cooled cable. A cooling channel is arranged along the length direction inside the conductor of the main core, and a cooling return pipe arranged in parallel with the main core is arranged inside the outer sheath corresponding to the cooling channel. The cooling channel and the cooling return pipe are used for circulating the coolant. This solution adopts a split-type coolant circulation pipeline, which can achieve cooling and heat dissipation. However, the use of a split-type circulation pipeline makes the cable processing process complex, increases the cross-sectional area of the cable, and requires disassembly and assembly to be connected to the charging gun to realize the coolant circulation, which is inconvenient to use. Content of the Utility Model

[0004] The purpose of the utility model is to provide a conductor liquid-cooled self-return charging pile cable to solve the problems of high leakage risk, too large outer diameter of the cable, and inconvenient use caused by the separate setting of the circulation pipes of the existing liquid-cooled cables.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A conductor liquid-cooled self-return charging pile cable includes an outer sheath. A grounding core, a signal core, a control core, and a main core are arranged inside the outer sheath. The main core includes a circulating cooling pipe, a power supply conductor layer arranged around the circulating cooling pipe, and a power supply insulating layer extruded outside the power supply conductor layer. The circulating cooling pipe includes an outer pipe body and an inner pipe body. A liquid inlet channel is arranged inside the inner pipe body. A support plate is arranged between the outer pipe body and the inner pipe body. The outer pipe body, the support plate, and the inner pipe body form a liquid outlet channel together. One end of the circulating cooling pipe is provided with a sealing plug, and the sealing plug is in contact with the outer pipe body. A return channel is arranged between the inner pipe body and the sealing plug.

[0006] As a further improvement of the above technical solution:

[0007] The other end of the circulating cooling pipe is provided with a liquid return tank and a cooling tank. The liquid outlet channel is connected to the liquid return tank, the liquid inlet channel is connected to the cooling tank, and the liquid return tank is connected to the cooling tank.

[0008] The grounding core, the signal core, and the control core all include a conductor and an insulating layer wrapped outside the conductor.

[0009] A braided shielding layer made of tinned copper wires is provided inside the outer sheath.

[0010] A filler is provided between the grounding core, the main core, the signal core, and the control core.

[0011] The power supply conductor layer is formed by winding a number of copper wires.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The conductor liquid-cooled self-return charging pile cable of the present utility model is provided with a circulating cooling pipe, and the liquid inlet and outlet are integrated, which can effectively reduce the outer diameter of the cable. By wrapping the power supply conductor layer outside the circulating cooling pipe, sufficient heat dissipation and temperature reduction of the heat-generating part of the cable can be achieved, which can improve the current transmission efficiency and realize fast charging. A sealing plug is used to seal the circulating cooling pipe, and there is no need to connect it to the charging gun for coolant circulation. The installation is simple, reducing the risk of liquid leakage at the joints, and solving the problems of the existing liquid-cooled cable with separate circulating pipes, high risk of liquid leakage, too large outer diameter of the cable, and inconvenient use. Description of the Drawings

[0014] Figure 1 It is a schematic cross-sectional structure diagram of the conductor liquid-cooled self-return charging pile cable of the present utility model;

[0015] Figure 2 It is one of the schematic structural diagrams of the circulating cooling pipe of the present utility model;

[0016] Figure 3 It is another schematic structural diagram of the circulating cooling pipe of the present utility model;

[0017] Figure 4 It is a schematic diagram of the coolant circulation structure of the present utility model.

[0018] Reference Numerals: 1. Outer Sheath; 10. Braided Shielding Layer; 11. Filler; 2. Grounding Core; 3. Signal Core; 4. Control Core; 5. Circulating Cooling Pipe; 51. Outer Pipe Body; 52. Inner Pipe Body; 521. Liquid Inlet Channel; 53. Support Plate; 54. Sealing Plug; 541. Return Channel; 6. Power Supply Conductor Layer; 7. Power Supply Insulation Layer; 8. Liquid Return Tank; 9. Cooling Tank; 522. Liquid Outlet Channel. Detailed Embodiments

[0019] In order to make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1 to 3As shown in the figure, the conductor liquid-cooled self-reflux charging pile cable of this embodiment includes an outer sheath 1. Inside the outer sheath 1, there are a grounding wire core 2, a signal wire core 3, a control wire core 4, and a main wire core. The main wire core includes a circulating cooling pipe 5, a power supply conductor layer 6 arranged around the circulating cooling pipe 5, and a power supply insulating layer 7 extruded outside the power supply conductor layer 6. The circulating cooling pipe 5 includes an outer pipe body 51 and an inner pipe body 52. Inside the inner pipe body 52, there is a liquid inlet channel 521. Between the outer pipe body 51 and the inner pipe body 52, there is a support plate 53. The circulating cooling pipe 5 is made of cross-linked polyolefin material. The outer pipe body 51, the support plate 53, and the inner pipe body 52 together form a liquid outlet channel 522. The number of liquid outlet channels 522 can be 2, 3, 4, or more. At one end of the circulating cooling pipe 5, there is a sealing plug 54. The sealing plug 54 is in contact with the outer pipe body 51. Between the inner pipe body 52 and the sealing plug 54, there is a reflux channel 541. This reflux channel is formed by cutting the inner pipe body with a 5 mm sink. The grounding wire core 2, the signal wire core 3, and the control wire core 4 all include a conductor and an insulating layer wrapped outside the conductor. Inside the outer sheath 1, there is a braided shielding layer 10 made of tinned copper wire. Between the grounding wire core 2, the main wire core, the signal wire core 3, and the control wire core 4, there is a filler 11. The filler 11 is made of nylon rope. The power supply conductor layer 6 is formed by winding a number of copper wires.

[0024] As Figure 4 shown in the figure, at the other end of the circulating cooling pipe 5, there is a liquid return tank 8 and a cooling tank 9. The liquid return tank 8 is connected to the cooling tank 9 through a pipe 523. The liquid outlet channel 522 is connected to the liquid return tank 8 through the pipe 523. The liquid inlet channel 521 is connected to the cooling tank 9 through a water pump 524.

[0025] During use, the coolant in the cooling tank 9 enters the liquid inlet channel 521 through the water pump 524. The coolant enters the reflux channel 541 and then flows from the liquid outlet channel 522 to the liquid return tank 8. In this way, the main wire core outside the circulating cooling pipe 5 can be dissipated heat. Since the liquid inlet channel and the liquid outlet channel are integrated and a single-pipe circulation is adopted, the outer diameter of the cable can be effectively reduced. At the same time, the occurrence of coolant leakage can be effectively reduced (because the number of pipes for transporting cooling liquid is reduced and the leakage points are reduced).

[0026] The above are only the embodiments of the present utility model, and common knowledge such as specific structures and characteristics known in the solutions is not described in detail herein. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. A conductor liquid-cooled self-return charging pile cable, comprising an outer sheath (1), wherein a grounding core (2), a signal core (3), a control core (4) and a main core are arranged inside the outer sheath (1), and it is characterized in that: The main conductor core includes a circulating cooling pipe (5), a power supply conductor layer (6) arranged around the circulating cooling pipe (5), and a power supply insulating layer (7) extruded outside the power supply conductor layer (6). The circulating cooling pipe (5) includes an outer pipe body (51) and an inner pipe body (52). A liquid inlet channel (521) is arranged inside the inner pipe body (52). A support plate (53) is arranged between the outer pipe body (51) and the inner pipe body (52). The outer pipe body (51), the support plate (53), and the inner pipe body (52) together form a liquid outlet channel (522). One end of the circulating cooling pipe (5) is provided with a sealing plug (54). The sealing plug (54) is in contact with the outer pipe body (51). A return channel (541) is arranged between the inner pipe body (52) and the sealing plug (54).

2. The conductor liquid-cooled self-return charging pile cable according to claim 1, wherein: The other end of the circulating cooling pipe (5) is provided with a liquid return tank (8) and a cooling tank (9). The liquid outlet channel (522) is connected to the liquid return tank (8). The liquid inlet channel (521) is connected to the cooling tank (9). The liquid return tank (8) is connected to the cooling tank (9).

3. The conductor liquid-cooled self-return charging pile cable according to claim 2, characterized in that: The grounding conductor core (2), the signal conductor core (3), and the control conductor core (4) each include a conductor and an insulating layer wrapped around the conductor.

4. The conductor liquid-cooled self-return charging pile cable according to claim 1, wherein: A braided shielding layer (10) made of tinned copper wires is arranged inside the outer sheath (1).

5. The conductor liquid-cooled self-return charging pile cable according to claim 3, characterized in that: A filler (11) is arranged between the grounding conductor core (2), the main conductor core, the signal conductor core (3), and the control conductor core (4).

6. The conductor liquid-cooled self-return charging pile cable according to claim 1, characterized in that: The power supply conductor layer (6) is formed by winding a number of copper wires.

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