Internal and external heat dissipation wire structure for liquid-cooled charging guns

Abstract

This utility model discloses a heat dissipation cable structure for a liquid-cooled charging gun, including a charging gun head, a liquid-cooled heat dissipation cable, and a liquid guide connector. The liquid-cooled heat dissipation cable is connected to the charging gun head, and the liquid guide connector is connected to the liquid-cooled 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 dual-return liquid-cooled spiral metal transmission assemblies. The signal transmission line, power line, PE cable, and oil supply pipe are all housed within the insulating jacket. Both sets of dual-return liquid-cooled spiral metal transmission assemblies are also housed within the insulating jacket. The oil supply pipe and the two sets of dual-return liquid-cooled spiral metal transmission assemblies are connected to the charging gun head. This utility model has the advantages of effectively removing internal heat from the liquid-cooled charging gun, while the liquid guide connector at the tail can be freely adjusted in angle or used in a fixed direction, resulting in a long overall service life and high safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat dissipation gun wire structure for internal and external heat dissipation of liquid-cooled charging gun, specifically relating to a heat dissipation gun wire structure for internal and external heat dissipation of liquid-cooled charging gun. 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, 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 liquid-cooled charging pile cable uses a semi-circular conductor wire and a liquid-cooling channel, which has a certain heat dissipation effect. However, it may not be able to fully meet the requirements in actual applications. Moreover, the cables used in existing liquid-cooled charging guns are generally liquid-coated copper or copper-coated liquid structures, and both have their advantages and disadvantages. The liquid-coated copper structure requires the outer sheath to be hardened to ensure support for the liquid flow. This structure makes the cable stiff and has poor flexibility. On the other hand, a similar core liquid-passing structure also requires plastic tube support, resulting in poor heat dissipation.

[0004] Furthermore, the liquid guide connectors at the tail end of the aforementioned liquid-cooled charging guns are mostly fixed or freely rotating connectors. Fixed connectors cannot adjust the angle, while freely rotating connectors cannot fix the direction. Therefore, there is an urgent need to develop a liquid guide connector for the tail end of a liquid-cooled charging gun that can both freely adjust the angle and fix the direction, thereby meeting the liquid guide connection requirements at the tail end of the liquid-cooled charging gun. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a structure for heat dissipation cables inside and outside a liquid-cooled charging gun that can remove internal heat, has good flexibility, and whose tail-end liquid guide connector can be freely adjusted in angle and fixed in direction.

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

[0007] The internal and external heat dissipation wire structure for liquid-cooled charging guns 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 dual-return liquid-cooled heat dissipation spiral metal transmission assemblies. The signal transmission line, power line, PE cable, and oil supply pipe are all housed inside the insulating jacket. The two sets of dual-return liquid-cooled heat dissipation spiral metal transmission assemblies are also housed inside the insulating jacket. The oil supply pipe and the two sets of dual-return liquid-cooled heat dissipation spiral metal transmission 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 dual-return liquid-cooled heat dissipation spiral metal transmission assemblies are used to receive the liquid-cooled oil in the charging gun head.

[0012] The dual-recirculation liquid-cooled spiral metal transmission assembly includes a spiral metal tube, a copper cable layer, and a plastic-reinforced tube. 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 plastic-reinforced tube is sleeved on the copper cable layer and a gap layer is provided between the two. The inside of the spiral metal tube is a first recirculation liquid cooling oil channel, and the gap layer is a second recirculation liquid cooling oil channel. The inside of the spiral metal tube and both ends of the gap layer are respectively connected to the charging gun head and the wiring terminal.

[0013] Preferably, the liquid guiding connector is provided in two sets. The liquid guiding connector is connected to the double-recirculation liquid-cooled heat dissipation spiral metal transmission assembly. The liquid guiding connector includes a terminal block, 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 threaded to the terminal block. The guide hole is connected to the second connecting hole. The first cavity is connected to the inside of the spiral metal tube and the gap layer.

[0014] Preferably, the oil supply pipe is a nylon pipe.

[0015] Preferably, the insulating jacket is further provided with a filling layer.

[0016] Preferably, the liquid guiding connector further includes a fluororubber ring, which is disposed between the right-angle connector and the terminal block.

[0017] 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.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects:

[0019] (1) This utility model is provided with two sets of dual-recirculation liquid-cooled spiral metal transmission components, oil supply pipes, and charging gun heads. The dual-recirculation liquid-cooled spiral metal transmission components include spiral metal tubes, copper cable layers, and plastic-reinforced tubes. In actual use, because the spiral metal tubes are in close contact with the copper cable layers and there is a gap layer between the plastic-reinforced tubes and the copper cable layers, the heat generated by the copper cable layers can be transferred to the liquid cooling oil in the first or second recirculation liquid cooling oil channel. Due to the rapid flow of the liquid cooling oil, the heat generated at various locations can be quickly carried out of this utility model, achieving the purpose of cooling and heat dissipation. It has good effect, can reduce heat generation, has a longer overall service life, and is safer. In specific use, it has high transmission efficiency. Moreover, since this utility model adopts a spiral metal tube and a plastic-reinforced tube, it not only ensures the support strength but also increases the overall flexibility of the utility model. The oil supply pipe, the charging gun head, and the two sets of double-return liquid-cooled heat dissipation spiral metal transmission components can form a liquid-cooled oil circuit. The oil supply pipe supplies liquid-cooled oil to the charging gun head, which carries away the heat generated by the charging gun head to the liquid-cooled oil in the first return liquid-cooled oil channel or the second return liquid-cooled oil channel, and then to the liquid guide connector, which can fully remove the heat.

[0020] (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.

[0021] In summary, this utility model has the advantages of being able to remove internal heat from the liquid-cooled charging gun, having good flexibility, and having a liquid guide connector at the tail that can be freely adjusted in angle and fixed in direction, as well as having a long service life and high safety. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the liquid-cooled heat dissipation cable of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the charging gun head, liquid cooling heat dissipation cable and external cold source unit of this utility model when they are used together;

[0024] Figure 3 yes Figure 2 Enlarged view of point P in the middle;

[0025] Figure 4 This is a schematic diagram of the liquid guiding connector of this utility model;

[0026] Figure 5 yes Figure 4 Exploded view;

[0027] Figure 6 yes Figure 4 The main view;

[0028] Figure 7 yes Figure 6 A cross-sectional view along the BB direction;

[0029] Figure 8 This is a schematic diagram of the structure of the charging gun head of this utility model;

[0030] The components include: charging gun head 100, 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, plastic-reinforced pipe 8, gap layer 300, wiring terminal 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 clamping nut 16, second external thread 17, guide hole 18, fluororubber ring 19, O-ring 20, and cold source unit 400. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Example 1

[0037] In this embodiment, a heat dissipation cable structure for the internal and external heat dissipation of a liquid-cooled charging gun is proposed. It can be connected to an external chiller 400. The chiller 400 may include a radiator and an oil pump, etc. Its main function is to cool the liquid cooling oil. Specifically, the chiller 400 supplies liquid cooling oil to this invention. The liquid cooling oil flows through this invention and then back to the chiller 400, completing the liquid cooling cycle of the liquid cooling oil. This invention has one oil inlet pipe (oil supply pipe 5) and two oil outlet pipes (two sets of double-return liquid cooling spiral metal transmission components). Each set of double-return liquid cooling spiral metal transmission components has two return channels, hence the name double-return liquid cooling spiral metal transmission components.

[0038] like Figures 1-8As shown, in one embodiment of this utility model, the internal and external heat dissipation cable structure for a liquid-cooled charging gun includes a charging gun head 100, a liquid-cooled heat dissipation cable, and a liquid guide connector. The liquid-cooled heat dissipation cable is connected to the charging gun head 100, and the liquid guide connector is connected to the liquid-cooled heat dissipation cable. Specifically, this utility model is connected to the chiller 400 through the liquid guide connector. The liquid-cooled heat dissipation cable 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 double-return liquid-cooled spiral metal transmission assemblies. The signal transmission line 2, power line 3, PE cable 4, and oil supply pipe 5 are all disposed inside the insulating jacket 1. The two sets of double-return liquid-cooled spiral metal transmission assemblies are all disposed inside the insulating jacket 1 and can be selected in appropriate positions according to requirements. The insulating jacket 1 of this utility model is provided with a filling layer, which can be located on the inner wall of the insulating jacket 1 and the signal transmission line 2, power line 3, PE cable 4, and oil supply pipe 5. Between the outer walls of these components, including the two sets of dual-recirculation liquid-cooled spiral metal transmission assemblies, the cable filling layer is existing technology, specifically it can be polyethylene filler, glass fiber filler, alumina filler, expanded polypropylene filler, etc. The oil supply pipe 5 and the two sets of dual-recirculation liquid-cooled spiral metal transmission assemblies are both 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 dual-recirculation liquid-cooled spiral metal transmission assemblies are used to receive the liquid cooling oil in the charging gun head 100 and for signal transmission. 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 dual-recirculation liquid-cooled spiral metal transmission assemblies and is thus transferred to the dual-recirculation liquid-cooled spiral metal transmission assemblies.

[0039] The described dual-recirculation liquid-cooled spiral metal transmission assembly includes a spiral metal tube 6, a copper cable layer 7, and a plastic-reinforced tube 8. The copper cable layer 7 is disposed outside the spiral metal tube 6 and is attached to the outer wall of the spiral metal tube 6. The plastic-reinforced tube 8 is sleeved on the copper cable layer 7 and has a gap layer 300 between it and the copper cable layer 7. The interior of the spiral metal tube 6 is a first recirculation liquid cooling oil channel, and the gap layer 300 is a second recirculation liquid cooling oil channel. The interior of the spiral metal tube 6 and both ends of the gap layer 300 are respectively connected to the charging gun head 100 and the terminal block 9. It can be understood that the spiral metal tube 6 is a metal tube with spiral grooves on its outer wall. In the prior art, a nylon tube is directly used and then a copper cable layer 7 and an insulation layer are placed on the outside. The nylon tube cannot carry away the large amount of heat generated by the copper cable layer 7, causing internal heat to accumulate. If the temperature is too high, the internal resistance of the copper cable layer 7 will increase further after the temperature rises, which will affect the transmission efficiency. If the temperature cannot be effectively controlled within a certain range, the increase in the internal resistance of the copper cable layer 7 will further increase the heat generation, and the temperature will rise more rapidly, affecting long-term safe use. This utility model utilizes the support of the spiral metal tube 6 and the plastic-reinforced tube 8, while the first and second return liquid cooling oil channels quickly remove the heat generated by the copper cable layer 7, effectively ensuring that the internal resistance of the copper cable layer 7 will not increase due to temperature rise within a certain range, thus ensuring the long-term safe use of this utility model. Moreover, both the first and second return liquid cooling oil channels are connected to the charging gun head 100, which can also remove the heat from the charging gun head 100. Specifically... Figure 2 The direction of the middle arrow indicates the flow direction of the liquid cooling oil;

[0040] It is understandable that the spiral metal tube 6 and the copper cable layer 7 of this invention are both conductive. The spiral metal tube 6 and the plastic-reinforced tube 8 both serve a supporting function. The spiral metal tube 6 provides support within the copper cable layer 7. If conventional plastic tubes are used, they do 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 copper cable layer 7 is mainly used for conductivity, 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. The plastic-reinforced tube 8 and the liquid cooling oil are both insulating and do not affect the conductivity between the copper cable layer 7 and the spiral metal tube 6. The liquid cooling oil in the plastic-reinforced tube 8 and the gap layer ensures the insulation of the outside of the copper cable layer 7, preventing the copper cable layer from conducting electricity to the outside of the plastic-reinforced tube 8.

[0041] The liquid guide connector has two sets, which are connected to the double-return liquid-cooled heat dissipation spiral metal transmission assembly. That is, the first return liquid-cooling oil channel and the second return liquid-cooling oil channel are connected to the liquid return connector 300, allowing liquid-cooling oil to be further introduced into the chiller 400. The liquid guide connector includes a terminal block 9, a right-angle connector 10, and a liquid-passing screw 11. The terminal block 9 has a first cavity inside, and a first connecting hole 12 in the middle. The inner wall of the first connecting hole 12 of the terminal block 9 has a first internal thread, which communicates with the first cavity. One end of the terminal block 9 has an external thread, which connects the terminal block 9 to the spiral metal tube 6. The first connecting hole 12 is located in the middle of the terminal block 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. The right side of the 14 has a first external thread 15, and a pressure nut 16 is threaded onto the first external 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-through screw 11 has a second external thread 17, and the middle part of the liquid-through screw 11 has a guide hole 18. The first internal thread is adapted to the second external thread 17. The liquid-through screw 11 passes through the first connecting hole 13 from top to bottom. The second connecting hole 13 is threadedly connected to the terminal 9, the guide hole 18 is connected to the second connecting hole 13, the double reflux liquid cooling heat dissipation spiral metal transmission assembly is connected to the terminal 9, the liquid guide connector of this utility model is also provided with a fluororubber ring 19 and an O-ring 20, wherein the fluororubber ring 19 is disposed between the right angle connector 10 and the terminal 9, the O-ring 20 is disposed between the upper part of the liquid screw 11 and the right angle connector 10, and the first cavity is connected to the inside of the spiral metal tube 6 and the gap layer 300;

[0042] In practical applications, terminal 9 connects to the inside of spiral metal tube 6 and gap layer 300. Then, the liquid cooling oil in spiral metal tube 6 and gap layer 300 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 required 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 cooling oil pipeline (specifically, it can be connected to the chiller 400) through the pagoda connector 14 to complete the closed loop.

[0043] The overall use of this utility model and the flow direction of the liquid cooling oil are as follows:

[0044] In practical applications, the charging gun head 100 of this invention 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 invention can be connected to a compatible chiller 400 for heat dissipation during charging. Specifically, the chiller 400 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 and the gap layer 300. The various components inside the liquid cooling heat dissipation cable, including the copper cable layer 7, can continue to exchange heat with the liquid cooling oil in the spiral metal tube 6 and the gap layer 300. Then, the liquid cooling oil flows through the liquid guide connector to the chiller 400 for heat dissipation and cooling. After heat dissipation and cooling are completed, it returns to the oil supply pipe 5 to complete the cycle. This invention 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.

[0045] 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 structure for dissipating heat inside and outside of a liquid-cooled charging gun wire, 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 dual-return liquid-cooled heat dissipation spiral metal transmission assemblies. The signal transmission line, power line, PE cable, and oil supply pipe are all housed inside the insulating jacket. The two sets of dual-return liquid-cooled heat dissipation spiral metal transmission assemblies are also housed inside the insulating jacket. The oil supply pipe and the two sets of dual-return liquid-cooled heat dissipation spiral metal transmission 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 dual-return liquid-cooled heat dissipation spiral metal transmission assemblies are used to receive the liquid-cooled oil in the charging gun head. The dual-recirculation liquid-cooled spiral metal transmission assembly includes a spiral metal tube, a copper cable layer, and a plastic-reinforced tube. 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 plastic-reinforced tube is sleeved on the copper cable layer and a gap layer is provided between the two. The inside of the spiral metal tube is a first recirculation liquid cooling oil channel, and the gap layer is a second recirculation liquid cooling oil channel. The inside of the spiral metal tube and both ends of the gap layer are respectively connected to the charging gun head and the wiring terminal.

2. The liquid-cooled charging gun inner and outer heat dissipation gun wire structure according to claim 1, characterized in that: The liquid guiding connector is provided in two sets. The liquid guiding connector is connected to the double-recirculation liquid cooling spiral metal transmission assembly. The liquid guiding connector includes a terminal block, 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 threaded to the terminal block. The guide hole is connected to the second connecting hole. The first cavity is connected to the inside of the spiral metal tube and the gap layer.

3. The liquid-cooled charging gun inner and outer heat dissipation gun wire structure according to claim 1, characterized in that: The oil supply pipe is a nylon pipe.

4. The structure for internal and external heat dissipation wires of a liquid-cooled charging gun according to claim 1, characterized in that: The insulating jacket also has a filling layer inside.

5. The liquid-cooled charge gun inner and outer heat dissipation 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.

6. The liquid-cooled charge gun inner and outer heat dissipation 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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