Terminal waterproof liquid cooling gun wire structure

Abstract

The utility model discloses a terminal waterproof liquid cooling gun wire structure, including charging gun head, liquid cooling heat dissipation cable and liquid connector, liquid cooling heat dissipation cable links to each other with charging gun head, and liquid connector links to each other with liquid cooling heat dissipation cable, wherein, liquid cooling heat dissipation cable includes insulating cover, at least one signal transmission line, at least one power line, PE cable, oil supply pipe and two groups of liquid cooling heat dissipation spiral metal transmission copper cable line assembly, and the signal transmission line, power line, PE cable and oil supply pipe all are arranged in insulating cover, and two groups of liquid cooling heat dissipation spiral metal transmission copper cable line assembly all are arranged in insulating cover, and oil supply pipe and two groups of liquid cooling heat dissipation spiral metal transmission copper cable line assembly all link to each other with charging gun head. The utility model has can take away liquid cooling charging gun internal heat, and the tail liquid connector can be angle free adjustment, and also can fixed direction use, and the whole service life is long, and has advantages such as high security.

Description

Technical Field

[0001] This utility model belongs to the field of liquid-cooled charging gun wire technology, specifically relating to a terminal waterproof liquid-cooled charging gun wire structure. Background Technology

[0002] In recent years, with the explosive growth in sales of new energy vehicles, the number of charging piles has also been increasing. However, in terms of the number of new energy vehicles, the current number of charging piles still cannot meet the demand. Although charging technology is constantly being innovated, it still takes at least 30 minutes to charge a family new energy passenger vehicle from a low battery level to 80%. The insufficient number of charging stations and the excessively long charging time have become obstacles to the further development of new energy vehicles. The excessively long charging time is mainly due to the severe heating of the cable conductors and terminals during long-term charging with high current. This forces charging piles to be able to operate normally when the cable temperature rises. Current limiting reduces charging efficiency. Existing liquid-cooled high-power cables use nylon plastic tubing to cover copper wire of the required cross-sectional area, then insulate it. This tubing is then combined with the required transmission lines to form the complete charging gun cable. Because nylon cables are made of plastic, their thermal conductivity is very low. When the liquid cooling oil flows in the tubing, its poor thermal conductivity means that it can only remove a small amount of heat generated by the cable. This results in high internal and surface temperatures for the cable, affecting long-term use. Furthermore, the severe overheating of the cable poses a fire hazard.

[0003] Therefore, there is a need to improve the cable. For example, patent application number 202210301926.9 discloses a liquid-cooled charging pile cable for high-current charging, which includes a cable core and a first sheath wrapped around the cable core. The cable core has a main power line, which includes a conductor wire with a semi-circular cross-section and a liquid-cooling channel with a semi-circular cross-section. The liquid-cooling channel is connected to the conductor wire to form a main power line with a circular cross-section. The liquid-cooling channel is filled with coolant. The cable core also has a coolant output pipe, which is connected to the liquid-cooling channel and can transport the coolant in the liquid-cooling channel to an external heat dissipation device through the coolant output pipe. Along the length of the cable, the cable also has multiple auxiliary heat dissipation devices. The auxiliary heat dissipation devices include a buffer cavity and a liquid-cooled heat dissipation plate. The buffer cavity is disposed on the liquid-cooling channel and connected to the liquid-cooling channel. One side wall of the liquid-cooled heat dissipation plate is connected to the buffer cavity. The liquid-cooled heat dissipation plate has heat dissipation fins, which are exposed outside the first sheath. The high-current charging liquid-cooled charging pile cable uses a semi-circular conductor wire and a liquid-cooling channel, which has a certain heat dissipation effect, but may not be able to fully meet the needs in actual applications.

[0004] Furthermore, the aforementioned liquid-cooled charging gun cable may experience liquid cooling oil leakage during actual application. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a terminal-type waterproof liquid-cooled gun wire structure that can remove internal heat from the liquid-cooled charging gun while maintaining good sealing performance to prevent liquid cooling oil leakage.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] The terminal-waterproof liquid-cooled gun wire structure includes:

[0008] Charging gun head;

[0009] Liquid-cooled heat dissipation cable connects to the charging gun head;

[0010] And a liquid guide connector, which connects to the liquid cooling heat dissipation cable;

[0011] The liquid-cooled heat dissipation cable includes an insulating jacket, at least one signal transmission line, at least one power line, a PE cable, an oil supply pipe, and two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies. The signal transmission line, power line, PE cable, and oil supply pipe are all housed inside the insulating jacket. The two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are also housed inside the insulating jacket. The oil supply pipe and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are all connected to the charging gun head. The oil supply pipe is used to supply liquid-cooled oil to the charging gun head, and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are used to receive the liquid-cooled oil in the charging gun head.

[0012] The liquid guiding connector is provided in two sets. The liquid guiding connector is connected to the liquid cooling spiral metal transmission copper cable assembly. The liquid guiding connector includes a terminal. The liquid cooling spiral metal transmission copper cable assembly is connected to the terminal. The terminal is provided with an external thread at one end near the liquid cooling spiral metal transmission copper cable assembly. The liquid cooling spiral metal transmission copper cable assembly is provided with a waterproof nut at one end near the terminal. The waterproof nut is adapted to the external thread and a waterproof plug is provided between the waterproof nut and the external thread.

[0013] Preferably, the liquid guiding connector further includes a right-angle connector and a liquid guiding screw. The terminal block has a first cavity, a first connecting hole in the middle, and a first internal thread on the inner wall of the first connecting hole. The first connecting hole communicates with the first cavity. The right-angle connector has a second connecting hole. The left end of the right-angle connector has a pagoda connector. The right side of the pagoda connector has a first external thread, and a pressure nut is threaded onto the first external thread. The pagoda connector communicates with the second connecting hole. The lower part of the liquid guiding screw has a second external thread, and the middle part of the liquid guiding screw has a guide hole. The first internal thread and the second external thread are compatible. The liquid guiding screw passes through the second connecting hole from top to bottom and is threadedly connected to the terminal block. The guide hole is connected to the second connecting hole.

[0014] Preferably, the liquid-cooled heat dissipation spiral metal transmission copper cable assembly includes a spiral metal tube, a copper cable layer, and an insulation layer. The copper cable layer is disposed on the outside of the spiral metal tube and is attached to the outer wall of the spiral metal tube. The insulation layer is disposed on the outside of the copper cable layer. The inside of the spiral metal tube is an oil passage. The two ends of the spiral metal tube are respectively connected to the charging gun head and the terminal block.

[0015] Preferably, the oil supply pipe is a nylon pipe.

[0016] Preferably, the insulating jacket is further provided with a filling layer.

[0017] Preferably, the liquid guiding connector further includes a fluororubber ring, which is disposed between the right-angle connector and the terminal block.

[0018] Preferably, the fluid guide connector further includes an O-ring, which is disposed between the upper part of the fluid guide screw and the right-angle connector.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] (1) This utility model is provided with two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies, oil supply pipe and charging gun head, etc. The liquid-cooled heat dissipation spiral metal transmission copper cable assembly includes a spiral metal tube, a copper cable layer and an insulation layer. In specific use, since the spiral metal tube is in close contact with the copper cable layer, the heat generated by the copper cable layer can be transferred to the liquid cooling oil through the spiral metal tube. Due to the rapid flow of the liquid cooling oil, the heat generated in various places can be quickly carried out of this utility model to achieve the purpose of cooling and heat dissipation. The heat dissipation effect is good, which can reduce heat generation, and the overall service life is longer and the safety is higher. In specific use, the transmission efficiency is high. Moreover, since this utility model uses a spiral metal tube, while ensuring the support strength, it also increases the overall flexibility of this utility model. The oil supply pipe, the charging gun head and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies can form a liquid cooling oil circuit. The oil supply pipe supplies liquid cooling oil to the charging gun head to carry away the heat generated by the charging gun head to the spiral metal tube, and then to the liquid guide joint, which can fully carry away the heat.

[0021] (2) The terminal block of this utility model is provided with an external thread at one end near the liquid-cooled heat dissipation spiral metal transmission copper cable assembly, and a waterproof nut is provided at one end near the terminal block. The waterproof nut is adapted to the external thread and a waterproof plug is provided between the waterproof nut and the external thread. The waterproof plug, the external thread and the waterproof nut ensure the sealing of this utility model and can prevent liquid cooling oil leakage.

[0022] (2) This utility model is equipped with a right-angle connector and other structures. Compared with the prior art, the fixed liquid guide connector in the prior art can only be fixed in one direction and cannot be changed after installation. The right-angle connector of this utility model can be rotated 360 degrees at any angle. After the angle is determined, it is locked by the liquid guide screw. The horizontal direction can be adjusted. The angle can be adjusted freely and the direction can be fixed. Moreover, this utility model is equipped with a fluororubber ring and an O-ring, which facilitates sealing and can prevent leakage.

[0023] In summary, this utility model has the advantages of being able to remove internal heat from the liquid-cooled charging gun, having good sealing performance to prevent liquid cooling oil leakage, and having a liquid guide connector at the tail that can be freely adjusted in angle or fixed in direction for use, as well as having a long overall service life and high safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the liquid-cooled heat dissipation cable of this utility model;

[0026] Figure 3 This is a schematic diagram of the liquid-cooled heat dissipation spiral metal transmission copper cable assembly of this utility model;

[0027] Figure 4 yes Figure 3 Another structural diagram in another direction;

[0028] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0029] Figure 6 This is a schematic diagram of the liquid guiding connector of this utility model;

[0030] Figure 7 yes Figure 6 Exploded view;

[0031] Figure 8 yes Figure 6 The main view;

[0032] Figure 9 yes Figure 8 A cross-sectional view along the BB direction;

[0033] Figure 10 This is a schematic diagram of the structure of the charging gun head of this utility model;

[0034] Figure 11 yes Figure 10 The left view;

[0035] Figure 12 yes Figure 11A cross-sectional view along the CC direction;

[0036] Figure 13 This is a schematic diagram of the structure of the wiring terminal, waterproof nut, and waterproof plug of this utility model.

[0037] Figure 14 yes Figure 13 Exploded view;

[0038] The components include: charging gun head 100, liquid cooling heat dissipation cable 200, liquid guide connector 300, insulating jacket 1, signal transmission line 2, power cord 3, PE cable 4, oil supply pipe 5, spiral metal pipe 6, copper cable layer 7, insulating layer 8, terminal block 9, right angle connector 10, liquid flow screw 11, first connecting hole 12, second connecting hole 13, pagoda connector 14, first external thread 15, pipe clamp nut 16, second external thread 17, guide hole 18, fluororubber ring 19, O-ring 20, waterproof nut 21, and waterproof plug 22. Detailed Implementation

[0039] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0040] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0041] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Example 1

[0045] In this embodiment, a terminal-waterproof liquid-cooled gun wire structure is proposed, which can be connected to an external radiator and oil pump, etc., so that the oil pump supplies liquid-cooling oil to this utility model. The liquid-cooling oil flows through this utility model to the radiator for heat dissipation and then returns to the oil pump, completing the liquid-cooling oil circulation. The "one inlet" of this utility model refers to having one oil inlet pipe (oil supply pipe 5), and the "two outlets" refers to having two oil outlet pipes (spiral metal pipe 6).

[0046] like Figures 1-14As shown, in one embodiment of this utility model, the terminal waterproof liquid-cooled gun cable structure includes a charging gun head 100, a liquid-cooled heat dissipation cable 200, and a liquid-conducting connector 300. The liquid-cooled heat dissipation cable 200 is connected to the charging gun head 100, and the liquid-conducting connector 300 is connected to the liquid-cooled heat dissipation cable 200. The liquid-cooled heat dissipation cable 200 includes an insulating jacket 1, at least one signal transmission line 2, at least one power line 3, a PE cable 4, an oil supply pipe 5, and two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies. The signal transmission line 2, power line 3, PE cable 4, and oil supply pipe 5 are all disposed within the insulating jacket 1. The two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are also disposed within the insulating jacket 1 and can be selected at appropriate locations as needed. A filling layer is provided inside the insulating jacket 1. Specifically, the filling layer can be located on the inner wall of the insulating jacket 1 and within the signal transmission line 2, power line 3, PE cable 4, oil supply pipe 5, and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies. Between the outer walls of these components, such as the liquid-cooled heat dissipation spiral metal transmission copper cable assembly, the cable filling layer is existing technology, which can be polyethylene filler, glass fiber filler, alumina filler, expanded polypropylene filler, etc. The oil supply pipe 5 and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are connected to the charging gun head 100. The oil supply pipe 5 is used to supply liquid cooling oil to the charging gun head 100. The two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are used to receive liquid cooling oil and signal transmission in the charging gun head 100. The terminals of the charging gun head 100 can be hollow. The oil supply pipe 5 is specifically a nylon tube, which delivers liquid cooling oil to the terminals of the charging gun head 100. When the charging gun head 100 is used for charging, it generates heat. This heat can exchange heat with the liquid cooling oil inside the terminals of the charging gun head 100. The liquid cooling oil also exchanges heat with the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies and thus moves into the liquid-cooled heat dissipation spiral metal transmission copper cable assemblies.

[0047] Specific reference Figure 13 and Figure 14The liquid guiding connector is provided in two sets. The liquid guiding connector is connected to the liquid cooling spiral metal transmission copper cable assembly. The liquid guiding connector includes a terminal block. The liquid cooling spiral metal transmission copper cable assembly is connected to the terminal block. The terminal block has an external thread at the end near the liquid cooling spiral metal transmission copper cable assembly. The liquid cooling spiral metal transmission copper cable assembly has a waterproof nut 21 at the end near the terminal block. The waterproof nut 21 is adapted to the external thread, and a waterproof plug 22 is provided between the waterproof nut 21 and the external thread. Specifically, the two sets of liquid guiding connectors are adapted to and correspond one-to-one with the two sets of liquid cooling spiral metal transmission copper cable assemblies. Each set of liquid cooling spiral metal transmission copper cable assemblies has a waterproof nut 21 at the end near the liquid guiding connector. The waterproof nut 21, the waterproof plug 22, and the external thread cooperate to achieve a complete seal and prevent leakage of liquid cooling oil. When the sealing effect is not ideal, the waterproof nut 21 can be unscrewed and the waterproof plug 22 replaced. Disassembly is convenient.

[0048] Specific reference Figures 3-5 The liquid-cooled spiral metal transmission copper cable assembly includes a spiral metal tube 6, a copper cable layer 7, and an insulation layer 8. The copper cable layer 7 is disposed on the outside of the spiral metal tube 6 and is attached to the outer wall of the spiral metal tube 6. The insulation layer 8 is disposed on the outside of the copper cable layer 7. The inside of the spiral metal tube 6 is an oil passage. The two ends of the spiral metal tube 6 are respectively connected to the charging gun head 100 and the terminal 9. It can be understood that the spiral metal tube 6 is a metal tube with spiral grooves on the outer wall. In the prior art, a nylon tube is directly used and then the copper cable layer 7 and the insulation layer 8 are disposed on the outside. The nylon tube cannot carry away the large amount of heat generated by the copper cable layer 7, resulting in an excessively high internal temperature. After the temperature of the copper cable layer 7 increases, the internal resistance will further increase, which will affect the transmission efficiency. If the temperature cannot be controlled... Effective control at a certain temperature prevents the increase in internal resistance of the copper cable layer 7 from further increasing heat generation and accelerating temperature rise, which could affect long-term safe use. This invention utilizes the support of the spiral metal tube 6 while the oil passage quickly removes the heat generated by the copper cable layer 7, effectively ensuring that the internal resistance of the copper cable layer 7 does not increase due to temperature rise within a certain temperature range, thus guaranteeing the long-term safe use of this invention. Moreover, the oil supply passage is also connected to the charging gun head 100, which can also remove the heat from the charging gun head 100. The heat inside the insulating jacket 1 of this invention can also be transferred to the insulating layer 8 and the copper cable layer 7. The copper cable layer 7 exchanges heat with the liquid cooling oil in the spiral metal tube 6, and the liquid cooling oil removes the heat from the copper cable layer 7.

[0049] It is understandable that both the spiral metal tube 6 and the copper cable layer 7 of this invention are conductive. The spiral metal tube 6 plays a supporting role within the copper cable layer 7. If a conventional plastic tube is used, it does not absorb heat and the supporting strength is insufficient, requiring thicker support. In this case, the overall bending toughness is insufficient. In this invention, the conductivity mainly relies on the copper cable layer 7, while the spiral metal tube 6 is mainly made of stainless steel, which has a higher resistivity than the copper cable layer 7. When energized, the current flows to the copper cable layer 7 with lower resistivity. The liquid cooling oil in this invention is mainly dimethyl silicone oil, which has insulating properties. Both the insulating layer 8 and the liquid cooling oil are insulating and do not affect the conductivity of the copper cable layer 7 and the spiral metal tube 6. The insulating layer 8 and the liquid cooling oil ensure the insulation of the outer side of the copper cable layer 7 and the inner side of the spiral metal tube 6.

[0050] More specifically, the liquid guide connector 300 also includes a right-angle connector 10 and a liquid-passing screw 11. The terminal 9 has a first cavity, a first connecting hole 12 in its center, and a first internal thread on the inner wall of the first connecting hole 12, which communicates with the first cavity. One end of the terminal 9 has an external thread, through which it connects to the spiral metal tube 6. The first connecting hole 12 is located in the center of the terminal 9 and communicates with the first cavity for liquid passage. The right-angle connector 10 has a second connecting hole 13, which is a through hole that penetrates the right-angle connector 10 from top to bottom. The left end of the right-angle connector 10 has a pagoda connector 14, and the right side of the pagoda connector 14 has a first external thread 15. A pressure nut 16 is threaded onto thread 15. The pagoda connector 14 communicates with the second connecting hole 13. The pressure nut 16 is used to lock the external connecting component and the pagoda connector 14 after they are connected. The lower part of the liquid-passing screw 11 is provided with a second external thread 17. The middle part of the liquid-passing screw 11 is provided with a guide hole 18. The first internal thread is adapted to the second external thread 17. The liquid-passing screw 11 passes through the second connecting hole 13 from top to bottom and is threaded to the terminal 9. The guide hole 18 is connected to the second connecting hole 13. The liquid-passing connector of this utility model is also provided with a fluororubber ring 19 and an O-ring 20. The fluororubber ring 19 is provided between the right-angle connector 10 and the terminal 9. The O-ring 20 is provided between the upper part of the liquid-passing screw 11 and the right-angle connector 10.

[0051] In practical applications, terminal 9 connects to spiral metal tube 6. The liquid cooling oil in spiral metal tube 6 enters the liquid flow screw 11 through the first cavity of terminal 9, then enters the right-angle connector 10 through the guide hole 18, and finally flows out through the pagoda connector 14. The right-angle connector 10 can rotate 360 ​​degrees. After determining the desired direction, the liquid flow screw 11 locks the right-angle connector 10 to fix the direction. At the same time, the liquid flow screw 11 squeezes the fluororubber ring 19 and O-ring 20 to complete the seal. The compression nut 16 cooperates with the first external thread 15 and is sealed and connected to the external liquid outlet pipe through the pagoda connector 14 (specifically, it can be connected to the radiator and oil pump, etc., and the oil pump is further connected to the oil supply pipe 5) to complete the closed loop.

[0052] The overall use of this utility model and the flow direction of the liquid cooling oil are as follows:

[0053] In practical applications, the charging gun head 100 of this utility model is plugged into a charging plug for charging. The signal transmission line 2, power line 3, PE cable 4, and other structures are used in conjunction with the charging gun head 100 to charge corresponding new energy vehicles. Moreover, this utility model can be connected to a suitable oil pump and radiator structure for heat dissipation during charging. Specifically, the oil pump can supply liquid cooling oil to the oil supply pipe 5. The liquid cooling oil flows through the charging gun head 100 to remove the heat from the charging gun head 100. Then, the liquid cooling oil flows through the spiral metal tube 6. The various components inside the liquid cooling heat dissipation cable 200, including the copper cable layer 7, can continue to exchange heat with the liquid cooling oil in the spiral metal tube 6. Then, the liquid cooling oil flows through the liquid guide connector to the radiator for heat dissipation. After heat dissipation, it returns to the oil pump and is reintroduced into the oil supply pipe 5 to complete the cycle. This utility model can ensure timely heat dissipation during charging. Moreover, the liquid guide connector can be freely adjusted in angle or fixed in direction. The overall design is reasonable, safe to use, and has a long service life.

[0054] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A terminal-waterproof liquid-cooled gun wire structure, characterized in that, include: Charging gun head; Liquid-cooled heat dissipation cable connects to the charging gun head; And a liquid guide connector, which connects to the liquid cooling heat dissipation cable; The liquid-cooled heat dissipation cable includes an insulating jacket, at least one signal transmission line, at least one power line, a PE cable, an oil supply pipe, and two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies. The signal transmission line, power line, PE cable, and oil supply pipe are all housed inside the insulating jacket. The two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are also housed inside the insulating jacket. The oil supply pipe and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are all connected to the charging gun head. The oil supply pipe is used to supply liquid-cooled oil to the charging gun head, and the two sets of liquid-cooled heat dissipation spiral metal transmission copper cable assemblies are used to receive the liquid-cooled oil in the charging gun head. The liquid guiding connector is provided in two sets. The liquid guiding connector is connected to the liquid cooling spiral metal transmission copper cable assembly. The liquid guiding connector includes a terminal. The liquid cooling spiral metal transmission copper cable assembly is connected to the terminal. The terminal is provided with an external thread at one end near the liquid cooling spiral metal transmission copper cable assembly. The liquid cooling spiral metal transmission copper cable assembly is provided with a waterproof nut at one end near the terminal. The waterproof nut is adapted to the external thread and a waterproof plug is provided between the waterproof nut and the external thread.

2. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The liquid guiding connector also includes a right-angle connector and a liquid guiding screw. The terminal block has a first cavity and a first connecting hole in the middle. The inner wall of the first connecting hole of the terminal block has a first internal thread and communicates with the first cavity. The right-angle connector has a second connecting hole and a pagoda connector at the left end. The pagoda connector has a first external thread on the right side and a pressure nut is threaded onto the first external thread. The pagoda connector communicates with the second connecting hole. The liquid guiding screw has a second external thread at the bottom and a guide hole in the middle. The first internal thread and the second external thread are compatible. The liquid guiding screw passes through the second connecting hole from top to bottom and is threadedly connected to the terminal block. The guide hole is connected to the second connecting hole.

3. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The liquid-cooled heat dissipation spiral metal transmission copper cable assembly includes a spiral metal tube, a copper cable layer, and an insulation layer. The copper cable layer is located on the outside of the spiral metal tube and is attached to the outer wall of the spiral metal tube. The insulation layer is located on the outside of the copper cable layer. The inside of the spiral metal tube is an oil passage. The two ends of the spiral metal tube are connected to the charging gun head and the terminal block, respectively.

4. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The oil supply pipe is a nylon pipe.

5. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The insulating jacket also has a filling layer inside.

6. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The liquid guiding connector also includes a fluororubber ring, which is disposed between the right-angle connector and the terminal block.

7. The terminal-waterproof liquid-cooled gun wire structure according to claim 1, characterized in that: The fluid guide connector also includes an O-ring, which is disposed between the upper part of the fluid guide screw and the right-angle connector.

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