Two-in-two-out liquid-cooled gun wire structure

Abstract

This utility model discloses a two-inlet, two-outlet liquid-cooled charging gun cable structure, including a charging gun head, a two-inlet, two-outlet liquid-cooled heat dissipation cable, a first liquid guide connector, and a second liquid guide connector. The two-inlet, two-outlet liquid-cooled heat dissipation cable is connected to the charging gun head, the first liquid guide connector is connected to the two-inlet, two-outlet liquid-cooled heat dissipation cable, and the second liquid guide connector is connected to the two-inlet, two-outlet liquid-cooled heat dissipation cable. The two-inlet, two-outlet liquid-cooled heat dissipation cable includes an insulating jacket, at least one signal transmission line, at least one power line, at least one protocol line, a PE cable, a first oil supply pipe, a second oil supply pipe, a first liquid-cooled cable, and a second liquid-cooled cable. This utility model has advantages such as being able to remove internal heat from the liquid-cooled charging gun, and the liquid guide connector at the tail end (which can be freely adjusted in angle or fixed in direction for use), resulting in a long overall service life and high safety.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a two-in-two-out liquid-cooled 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, 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 liquid guide connectors at the tail end of the aforementioned liquid-cooled charging guns are mostly fixed or freely rotating. Fixed connectors cannot be adjusted in angle, while freely rotating connectors cannot be fixed in 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 two-inlet, two-outlet liquid-cooled charging cable structure that can remove internal heat from a liquid-cooled charging gun while allowing for both free angle adjustment and fixed direction use of the tail-end liquid guide connector.

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

[0007] The dual-inlet, dual-outlet liquid-cooled gun wire structure includes:

[0008] Charging gun head;

[0009] A two-in-two-out liquid-cooled heat dissipation cable is connected to the charging gun head;

[0010] The first liquid guide connector is connected to a two-inlet, two-outlet liquid cooling heat dissipation cable;

[0011] And the second liquid guide connector, which is connected to the two-inlet, two-outlet liquid cooling heat dissipation cable;

[0012] The dual-inlet, dual-outlet liquid-cooled heat dissipation cable includes an insulating jacket, at least one signal transmission line, at least one power line, at least one protocol line, a PE cable, a first oil supply pipe, a second oil supply pipe, a first liquid-cooled cable, and a second liquid-cooled cable. The signal transmission line, power line, protocol line, PE cable, first oil supply pipe, second oil supply pipe, first liquid-cooled cable, and second liquid-cooled cable are all housed within the insulating jacket. The first oil supply pipe is correspondingly positioned to the first liquid-cooled cable, and the second oil supply pipe is correspondingly positioned to the second liquid-cooled cable. The first liquid-cooled cable has a first oil passage cavity, and the second liquid-cooled cable has a second oil passage cavity. The first oil supply pipe is used to deliver liquid-cooled oil into the first oil passage cavity, and the second oil supply pipe is used to deliver liquid-cooled oil into the second oil passage cavity.

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

[0014] The second liquid guide connector includes a second terminal block, a second right-angle connector, and a second liquid guide screw. The second terminal block has a second cavity and a third connecting hole in its middle. The inner wall of the third connecting hole of the second terminal block has a second internal thread, and the third connecting hole communicates with the second cavity. The second right-angle connector has a fourth connecting hole. The left end of the second right-angle connector has a second pagoda connector. The right side of the second pagoda connector has a third external thread, and a second pressure nut is threaded onto the third external thread. The second pagoda connector communicates with the fourth connecting hole. The lower part of the second liquid guide screw has a fourth external thread, and the middle part of the second liquid guide screw has a second guide hole. The second internal thread and the fourth external thread are compatible. The second liquid guide screw passes through the fourth connecting hole from top to bottom and is threadedly connected to the second terminal block. The second guide hole is connected to the fourth connecting hole. The second liquid cooling cable is connected to the second terminal block.

[0015] Preferably, the first liquid-cooled cable includes a first spiral metal tube, a first copper cable layer, and a first insulation layer. The first copper cable layer is disposed on the outside of the first spiral metal tube and is attached to the outer wall of the first spiral metal tube. The first insulation layer is disposed on the outside of the first copper cable layer. The first oil passage cavity is located inside the first spiral metal tube. The two ends of the first spiral metal tube are respectively connected to the charging gun head and the first terminal block.

[0016] Preferably, the second liquid-cooled cable includes a second spiral metal tube, a second copper cable layer, and a second insulation layer. The second copper cable layer is disposed on the outside of the second spiral metal tube and is attached to the outer wall of the second spiral metal tube. The second insulation layer is disposed on the outside of the second copper cable layer. The second oil passage cavity is located inside the second spiral metal tube. The two ends of the second spiral metal tube are respectively connected to the charging gun head and the second terminal block.

[0017] Preferably, both the first oil supply pipe and the second oil supply pipe are nylon pipes.

[0018] Preferably, the insulating jacket is further provided with a filling layer.

[0019] Preferably, the first liquid guiding connector further includes a first fluororubber ring, which is disposed between the first right-angle connector and the first terminal.

[0020] The second liquid guide connector also includes a second fluororubber ring, which is disposed between the second right-angle connector and the second terminal block.

[0021] Preferably, the first liquid guide connector further includes a first O-ring, which is disposed between the upper part of the first liquid-through screw and the first right-angle connector;

[0022] The second fluid guide connector also includes a second O-ring, which is disposed between the upper part of the second fluid screw and the second right-angle connector.

[0023] By adopting the above technical solution, this utility model has the following beneficial effects:

[0024] (1) This utility model includes a first liquid-cooled cable, a second liquid-cooled cable, a first oil supply pipe, a second oil supply pipe, and a charging gun head. The first liquid-cooled cable and the second liquid-cooled cable each include a first spiral metal tube, a first copper cable layer, a first insulation layer, a second spiral metal tube, a second copper cable layer, and a second insulation layer. In actual use, since the first spiral metal tube is in close contact with the first copper cable layer, and the second spiral metal tube is in close contact with the second copper cable layer, the heat generated by the first copper cable layer and the second copper cable layer can be transferred to the liquid cooling oil through the first spiral metal tube and the second spiral metal tube, respectively. Due to the rapid flow of the liquid cooling oil, the heat generated at various points can be quickly carried out of this utility model. It achieves the purpose of cooling and heat dissipation, with good heat dissipation effect, which can reduce heat generation, extend the overall service life, and improve safety. In specific use, it has high transmission efficiency. Moreover, since this utility model adopts a first spiral metal tube and a second spiral metal tube, it not only ensures the support strength but also increases the overall flexibility of the utility model. The first oil supply pipe, the second oil supply pipe, the charging gun head, and the first liquid cooling cable and the second liquid cooling cable can form a liquid cooling oil circuit. The first oil supply pipe and the second oil supply pipe supply liquid cooling oil to the charging gun head to carry away the heat generated by the charging gun head to the first spiral metal tube and the second spiral metal tube, and then to the first liquid guide joint and the second liquid guide joint, which can fully remove the heat.

[0025] (2) This utility model is provided with a first right-angle connector, a second 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 first right-angle connector and the second right-angle connector of this utility model can be rotated 360 degrees at any angle. After the angle is determined, it can be locked by the first liquid guide screw or the second 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 provided with a first fluororubber ring, a second fluororubber ring, a first O-ring and a second O-ring, which facilitates sealing and can prevent leakage.

[0026] In summary, this utility model has the advantages of being able to remove internal heat from the liquid-cooled charging gun, and the liquid guide connectors at the tail (the first liquid guide connector and the second liquid guide connector) can be freely adjusted in angle and used in a fixed direction, with a long overall service life and high safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the two-inlet, two-outlet liquid-cooled heat dissipation cable of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the first liquid-cooled cable of this utility model;

[0030] Figure 4 yes Figure 3 Another structural diagram in another direction;

[0031] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0032] Figure 6 This is a schematic diagram of the structure of the first liquid guiding connector of this utility model;

[0033] Figure 7 yes Figure 6 Exploded view;

[0034] Figure 8 yes Figure 6 The main view;

[0035] Figure 9 yes Figure 8 A cross-sectional view along the BB direction;

[0036] Figure 10 This is a schematic diagram of the structure of the second liquid-cooled cable of this utility model;

[0037] Figure 11This is a schematic diagram of the structure of the second liquid guide connector of this utility model;

[0038] Figure 12 yes Figure 11 Exploded view;

[0039] Figure 13 This is a schematic diagram of the structure of the charging gun head of this utility model;

[0040] Figure 14 yes Figure 13 The left view;

[0041] Figure 15 yes Figure 14 A cross-sectional view along the CC direction;

[0042] The components include: a charging gun head 100, a liquid cooling cable 200, a first liquid guide connector 300, a second liquid guide connector 400, an insulating jacket 1, a signal transmission line 2, a power cord 3, a PE cable 4, a first oil supply pipe 5, a first spiral metal pipe 6, a first copper cable layer 7, a first insulating layer 8, a first terminal block 9, a first right-angle connector 10, a first liquid flow screw 11, a first connecting hole 12, a second connecting hole 13, a first pagoda connector 14, a first external thread 15, a first clamping nut 16, a second external thread 17, and a first flow guide. Hole 18, first fluororubber ring 19, first O-ring 20, second oil supply pipe 51, second spiral metal pipe 61, second copper cable layer 71, second insulation layer 81, second terminal block 91, second right-angle connector 101, second fluid screw 111, third connecting hole 121, fourth connecting hole 131, second pagoda connector 141, third external thread 151, second pressure nut 161, fourth external thread 171, second guide hole 181, second fluororubber ring 191, second O-ring 201, protocol line 500. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Example 1

[0049] In this embodiment, a two-inlet, two-outlet liquid-cooled gun wire structure is proposed, which can be connected to external radiators and oil pumps, etc., so that the oil pump supplies liquid-cooled oil to this invention. The liquid-cooled oil flows through this invention to the radiator for heat dissipation and then returns to the oil pump, completing the liquid-cooled oil circulation. The two inlets of this invention refer to having two oil inlet pipes (first oil supply pipe 5 and second oil supply pipe 51), and the two outlets refer to having two oil outlet pipes (first spiral metal pipe 6 and second spiral metal pipe 61).

[0050] like Figures 1-15As shown, in one embodiment of this utility model, the two-input two-output liquid-cooled gun cable structure includes a charging gun head 100, a two-input two-output liquid-cooled heat dissipation cable 200, a first liquid guide connector 300, and a second liquid guide connector 400. The two-input two-output liquid-cooled heat dissipation cable 200 is connected to the charging gun head 100, the first liquid guide connector 300 is connected to the two-input two-output liquid-cooled heat dissipation cable 200, and the second liquid guide connector 400 is connected to the two-input two-output liquid-cooled heat dissipation cable 200. The two-input two-output liquid-cooled heat dissipation cable 200 includes an insulating jacket 1, at least one signal transmission line 2, at least one power line 3, at least one protocol line 500, a PE cable 4, a first oil supply pipe 5, a second oil supply pipe 51, a first liquid-cooled cable, and a second liquid-cooled cable. Cables, including signal transmission line 2, power line 3, protocol line 500, PE cable 4, first oil supply pipe 5, second oil supply pipe 51, first liquid-cooled cable, and second liquid-cooled cable, are all housed within insulating jacket 1. Both the first and second oil supply pipes 5 and 51 are nylon tubing. The first oil supply pipe 5 corresponds to the first liquid-cooled cable, and the second oil supply pipe 51 corresponds to the second liquid-cooled cable. The first liquid-cooled cable has a first oil passage cavity, and the second liquid-cooled cable has a second oil passage cavity. The first oil supply pipe 5 is used to supply liquid-cooled oil to the first oil passage cavity, and the second oil supply pipe 51 is used to supply liquid-cooled oil to the second oil passage cavity. Insulating jacket 1 also includes a filling layer, which can be located on the inner wall of insulating jacket 1 and around signal transmission line 2 and power line 3. The filling layer between the outer walls of the PE cable 4, the first oil supply pipe 5, the second oil supply pipe 51, the first liquid-cooled cable, and the second liquid-cooled cable is based on existing technology and can be filled with polyethylene, glass fiber, alumina, expanded polypropylene, etc. The first oil supply pipe 5 and the second oil supply pipe 51 are both connected to the charging gun head 100, supplying liquid-cooled oil to the charging gun head 100. The terminals of the charging gun head 100 can be hollow. In practical applications, the first oil supply pipe 5, the charging gun head 100, and the first liquid-cooled cable can form one circuit, and the second oil supply pipe 51, the charging gun head 100, and the second liquid-cooled cable can form another circuit. At this time, the oil pump... Liquid cooling oil is supplied to the charging gun head 100 (the terminal of the charging gun head 100) through the first oil supply pipe 5. The liquid cooling oil passes through the charging gun head 100 to the first liquid cooling cable (the first oil passage cavity), then to the first liquid guide connector 300, and then to the radiator. The radiator cools the liquid cooling oil and then delivers it to the oil pump, completing a cycle within one loop. Similarly, the oil pump can also supply liquid cooling oil to the charging gun head 100 (the terminal of the charging gun head 100) through the second oil supply pipe 51. The liquid cooling oil passes through the charging gun head 100 to the second liquid cooling cable (the second oil passage cavity), then to the second liquid guide connector 400, and then to the radiator. The radiator cools the liquid cooling oil and then delivers it to the oil pump, completing a cycle within one loop.

[0051] At the same time, the first oil supply pipe 5, the second oil supply pipe 51, the charging gun head 100, the first liquid cooling cable and the second liquid cooling cable can form a loop. At this time, the oil pump supplies liquid cooling oil to the charging gun head 100 (the terminal of the charging gun head 100) through the first oil supply pipe 5 and the second oil supply pipe 51. After passing through the charging gun head 100, the liquid cooling oil reaches the first liquid cooling cable (the first oil passage cavity) and the second liquid cooling cable (the second oil passage cavity), and then reaches the first liquid guide connector 300 and the second liquid guide connector 400, and then reaches the radiator. The radiator cools the liquid cooling oil and then delivers the liquid cooling oil to the oil pump, completing the circulation in an overall loop. Since the inside of the inner terminal of the charging gun head 100 can be set to be hollow, the liquid cooling oil can flow into the inside of the terminal of the charging gun head 100. The charging gun head 100 generates heat when it is charged and used. This heat can be exchanged with the liquid cooling oil inside the terminal of the charging gun head 100.

[0052] Continue to refer to Figures 6-9 The first liquid guide connector 300 and the second liquid guide connector 400 of this utility model have the same structure. The first liquid guide connector 300 is connected to the first liquid cooling cable, and the second liquid guide connector 400 is connected to the second liquid cooling cable. Specifically, the first liquid guide connector 300 of this utility model includes a first terminal block 9, a first right-angle connector 10, and a first liquid-through screw 11. The first terminal block 9 has a first cavity inside, and a first connecting hole 12 is provided in the middle of the first terminal block 9. A first internal thread is provided on the inner wall of the first connecting hole 12 of the first terminal block 9. The first connecting hole 12 communicates with the first cavity. The first right-angle connector 10 has a second connecting hole 13 inside. A first pagoda connector 14 is provided at the left end of the first right-angle connector 10. A first external thread 15 is provided on the right side of the first pagoda connector 14. The threaded part 15 is connected to the first pressure tube nut 16. The first pagoda connector 14 is connected to the second connecting hole 13. The lower part of the first liquid-through screw 11 is provided with the second external thread 17. The middle part of the first liquid-through screw 11 is provided with the first guide hole 18. The first internal thread is adapted to the second external thread 17. The first liquid-through screw 11 passes through the second connecting hole 13 from top to bottom and is threadedly connected to the first terminal 9. The first guide hole 18 is connected to the second connecting hole 13. The first liquid-cooling cable is connected to the first terminal 9. The first liquid-guide connector 300 also includes a first fluororubber ring 19 and a first O-ring 20. The first fluororubber ring 19 is disposed between the first right-angle connector 10 and the first terminal 9. The first O-ring 20 is disposed between the upper part of the first liquid-through screw 11 and the first right-angle connector 10.

[0053] And reference Figure 11 and Figure 12The second liquid guide connector 400 of this utility model includes a second terminal block 91, a second right-angle connector 101, and a second liquid guide screw 111. The second terminal block 91 has a second cavity, and a third connecting hole 121 is provided in the middle of the second terminal block 91. A second internal thread is provided on the inner wall of the third connecting hole 121, and the third connecting hole 121 communicates with the second cavity. The second right-angle connector 101 has a fourth connecting hole 131, and a second pagoda connector 141 is provided at the left end of the second right-angle connector 101. A third external thread 151 is provided on the right side of the second pagoda connector 141, and a second pressure nut 161 is threaded onto the third external thread 151. The second pagoda connector 141 communicates with the fourth connecting hole 131. The lower part of the second liquid-through screw 111 is provided with a fourth external thread 171, and the middle part of the second liquid-through screw 111 is provided with a second guide hole 181. The second internal thread is adapted to the fourth external thread 171. The second liquid-through screw 111 passes through the fourth connecting hole 131 from top to bottom and is threadedly connected to the second terminal 91. The second guide hole 181 is connected to the fourth connecting hole 131. The second liquid-cooling cable is connected to the second terminal 91. The second liquid-guide connector 400 also includes a second fluororubber ring 191 and a second O-ring 201. The second fluororubber ring 191 is disposed between the second right-angle connector 101 and the second terminal 91. The second O-ring 201 is disposed between the upper part of the second liquid-through screw 111 and the second right-angle connector 101.

[0054] In practical applications, the first terminal 9 is connected to the first liquid cooling cable. The liquid cooling oil in the first liquid cooling cable enters the first liquid flow screw 11 through the first cavity of the first terminal 9, then enters the first right-angle connector 10 through the first guide hole 18, and finally flows out through the first pagoda connector 14. The first right-angle connector 10 can rotate 360 ​​degrees. After determining the desired direction, the first liquid flow screw 11 locks the first right-angle connector 10 to fix the direction. At the same time, the first liquid flow screw 11 squeezes the first fluororubber ring 19 and the first O-ring 20 to complete the seal. The first pressure nut 16 and the first external thread 15 cooperate with each other and are sealed and connected to the external liquid outlet pipe through the first pagoda connector 14 (specifically, it can be connected to the radiator and oil pump, etc., and the oil pump is further connected to the first oil supply pipe 5) to complete the closed loop.

[0055] The second terminal 91 can be connected to the second liquid cooling cable. The liquid cooling oil in the second liquid cooling cable enters the second liquid flow screw 111 through the second cavity of the second terminal 91, then enters the second right-angle connector 101 through the second guide hole 181, and finally flows out through the second pagoda connector 141. The second right-angle connector 101 can rotate 360 ​​degrees. After determining the desired direction, the second liquid flow screw 111 locks the second right-angle connector 101 to fix the direction. At the same time, the second liquid flow screw 111 squeezes the second fluororubber ring 191 and the second O-ring 201 to complete the seal. The second pressure nut 161 and the third external thread 151 cooperate with each other and are sealed and connected to the external liquid outlet pipe through the second pagoda connector 141 (specifically, it can be connected to the radiator and oil pump, etc., and the oil pump is further connected to the second oil supply pipe 51) to complete the closed loop.

[0056] Please continue to refer to Figures 3-5 The first liquid-cooled cable of this utility model includes a first spiral metal tube 6, a first copper cable layer 7, and a first insulation layer 8. The first copper cable layer 7 is disposed outside the first spiral metal tube 6 and is attached to the outer wall of the first spiral metal tube 6. The first insulation layer 8 is disposed outside the first copper cable layer 7. The first oil passage cavity is located inside the first spiral metal tube 6. The two ends of the first spiral metal tube 6 are respectively connected to the charging gun head 100 and the first terminal 9. It can be understood that the first 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 first copper cable layer 7 and the first insulation layer 8 are disposed on the outside. The nylon tube cannot carry away the large amount of heat generated by the first copper cable layer 7, resulting in an excessively high internal temperature. After the temperature of the first copper cable layer 7 increases, the internal resistance will further increase, which will affect the transmission efficiency. If the temperature... If the temperature cannot be effectively controlled within a certain range, the increase in the internal resistance of the first 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 first spiral metal tube 6 while the first oil passage cavity quickly removes the heat generated by the first copper cable layer 7, effectively ensuring that the internal resistance of the first copper cable layer 7 will not increase due to the temperature rise within a certain range, thus ensuring the long-term safe use of this utility model. Moreover, the first oil passage cavity is also connected to the charging gun head 100 and can also remove the heat from the charging gun head 100. The heat inside the insulating jacket 1 of this utility model can also be transferred to the first insulating layer 8 and the first copper cable layer 7. The first copper cable layer 7 exchanges heat with the liquid cooling oil in the first spiral metal tube 6, and the liquid cooling oil will remove the heat from the first copper cable layer 7.

[0057] Continue to refer to Figure 10The second liquid-cooled cable of this utility model has the same structure as the first liquid-cooled cable. The second liquid-cooled cable includes a second spiral metal tube 61, a second copper cable layer 71, and a second insulation layer 81. The second copper cable layer 71 is disposed outside the second spiral metal tube 61 and is attached to the outer wall of the second spiral metal tube 61. The second insulation layer 81 is disposed outside the second copper cable layer 71. The second oil passage cavity is located inside the second spiral metal tube 61. Both ends of the second spiral metal tube 61 are connected to the charging gun head 100 and the second terminal block 91, respectively. It is understood that the second spiral metal tube 61 is also a metal tube with spiral grooves on its outer wall. In the prior art, a nylon tube is directly used, and then the second copper cable layer 71 and the second insulation layer 81 are disposed on the outside. The nylon tube cannot carry away the large amount of heat generated by the second copper cable layer 71, resulting in excessively high internal temperature. After the temperature of the second copper cable layer 71 increases, its internal resistance will further increase. In addition, transmission efficiency is affected. If the temperature cannot be effectively controlled within a certain range, the internal resistance of the second copper cable layer 71 will increase, the heat generation will increase further, and the temperature will rise more rapidly, affecting long-term safe use. This utility model utilizes the support of the second spiral metal tube 61 while the second oil passage cavity quickly removes the heat generated by the second copper cable layer 71, effectively ensuring that the internal resistance of the second copper cable layer 71 will not increase due to the temperature rise within a certain range, thus ensuring the long-term safe use of this utility model. Moreover, the second oil passage cavity is also connected to the charging gun head 100 and can also remove the heat from the charging gun head 100. The heat inside the insulating jacket 1 of this utility model can also be transferred to the second insulating layer 81 and the second copper cable layer 71. The second copper cable layer 71 and the liquid cooling oil in the second spiral metal tube 61 exchange heat, and the liquid cooling oil will remove the heat from the second copper cable layer 71.

[0058] It is understood that the first spiral metal tube 6, the first copper cable layer 7, the second spiral metal tube 61, and the second copper cable layer 71 of this invention are all conductive. The first spiral metal tube 6 and the second spiral metal tube 61 provide support within the first copper cable layer 7 and the second copper cable layer 71, respectively. If conventional plastic tubes were used, they would not absorb heat, and the support strength would be insufficient, requiring thicker support. In this case, the overall bending toughness would be insufficient. This invention mainly relies on the first copper cable layer 7 and the second copper cable layer 71 for conductivity. The first spiral metal tube 6 and the second spiral metal tube 61 are mainly made of stainless steel, which has a higher resistivity than the first copper cable layer and the second copper cable layer. When energized, the electrical conductivity... The liquid cooling oil flows to the first copper cable layer 7 and the second copper cable layer 71, which have low resistivity. The liquid cooling oil in this invention is mainly dimethyl silicone oil, which has insulating properties. Both the first insulating layer 8 and the liquid cooling oil are insulating and do not affect the conductivity of the first copper cable layer 7 and the first spiral metal tube 6. The first insulating layer 8 ensures the insulation of the outside of the first copper cable layer 7, and the liquid cooling oil ensures the insulation of the inside of the first spiral metal tube 6. Similarly, both the second insulating layer 81 and the liquid cooling oil are insulating and do not affect the conductivity of the second copper cable layer 71 and the second spiral metal tube 61. The second insulating layer 81 ensures the insulation of the outside of the second copper cable layer 71, and the liquid cooling oil ensures the insulation of the inside of the second spiral metal tube 61.

[0059] The overall use of this utility model and the flow direction of the liquid cooling oil are as follows:

[0060] 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, when combined with the charging gun head 100, are used to charge corresponding new energy vehicles. Furthermore, 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-cooled oil to the first oil supply pipe 5 and the second oil supply pipe 51. The liquid-cooled oil flows through the charging gun head 100, carrying away the heat from the charging gun head 100. Then, the liquid-cooled oil flows through the first spiral metal tube 6 and the second spiral metal tube 61, and the first liquid-cooled cable connects to the second liquid-cooled cable... The internal components of the cable, including the first copper cable layer 7 and the second copper cable layer 71, can continue to exchange heat with the liquid cooling oil in the first spiral metal tube 6 and the second spiral metal tube 61. Then, the liquid cooling oil flows through the first liquid guide joint 300 and the second liquid guide joint 400 to reach the radiator for heat dissipation. After heat dissipation, it returns to the oil pump and is reintroduced into the first oil supply pipe 5 and the second oil supply pipe 51 to complete the cycle. This utility model can ensure timely heat dissipation during charging. Moreover, the first liquid guide joint 300 and the second liquid guide joint 400 can be freely adjusted in angle or used in a fixed direction. The overall design is reasonable, safe to use, and has a long service life.

[0061] 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 two-in and two-out liquid-cooled gun line structure, characterized by, include: Charging gun head; A two-in-two-out liquid-cooled heat dissipation cable is connected to the charging gun head; The first liquid guide connector is connected to a two-inlet, two-outlet liquid cooling heat dissipation cable; And the second liquid guide connector, which is connected to the two-inlet, two-outlet liquid cooling heat dissipation cable; The dual-inlet, dual-outlet liquid-cooled heat dissipation cable includes an insulating jacket, at least one signal transmission line, at least one power line, at least one protocol line, a PE cable, a first oil supply pipe, a second oil supply pipe, a first liquid-cooled cable, and a second liquid-cooled cable. The signal transmission line, power line, protocol line, PE cable, first oil supply pipe, second oil supply pipe, first liquid-cooled cable, and second liquid-cooled cable are all housed within the insulating jacket. The first oil supply pipe is correspondingly positioned to the first liquid-cooled cable, and the second oil supply pipe is correspondingly positioned to the second liquid-cooled cable. The first liquid-cooled cable has a first oil passage cavity, and the second liquid-cooled cable has a second oil passage cavity. The first oil supply pipe is used to deliver liquid-cooled oil into the first oil passage cavity, and the second oil supply pipe is used to deliver liquid-cooled oil into the second oil passage cavity. The first liquid guide connector and the second liquid guide connector have the same structure. The first liquid guide connector is connected to the first liquid cooling cable, and the second liquid guide connector is connected to the second liquid cooling cable. The first liquid guide connector includes a first terminal, a first right-angle connector, and a first liquid-passing screw. The first terminal has a first cavity inside and a first connecting hole in the middle. The inner wall of the first connecting hole of the first terminal has a first internal thread. The first connecting hole communicates with the first cavity. The first right-angle connector has a second connecting hole inside. The left end of the first right-angle connector has a first pagoda connector. The right side of the first pagoda connector has a first external thread, and a first pressure nut is threaded onto the first external thread. The first pagoda connector communicates with the second connecting hole. The lower part of the first liquid-passing screw has a second external thread. The middle part of the first liquid-passing screw has a first guide hole. The first internal thread and the second external thread are compatible. The first liquid-passing screw passes through the second connecting hole from top to bottom and is threaded to the first terminal. The first guide hole is connected to the second connecting hole. The first liquid cooling cable is connected to the first terminal. The second liquid guide connector includes a second terminal block, a second right-angle connector, and a second liquid guide screw. The second terminal block has a second cavity and a third connecting hole in its middle. The inner wall of the third connecting hole of the second terminal block has a second internal thread, and the third connecting hole communicates with the second cavity. The second right-angle connector has a fourth connecting hole. The left end of the second right-angle connector has a second pagoda connector. The right side of the second pagoda connector has a third external thread, and a second pressure nut is threaded onto the third external thread. The second pagoda connector communicates with the fourth connecting hole. The lower part of the second liquid guide screw has a fourth external thread, and the middle part of the second liquid guide screw has a second guide hole. The second internal thread and the fourth external thread are compatible. The second liquid guide screw passes through the fourth connecting hole from top to bottom and is threadedly connected to the second terminal block. The second guide hole is connected to the fourth connecting hole. The second liquid cooling cable is connected to the second terminal block.

2. The two-in and two-out liquid-cooled gun string structure according to claim 1, characterized in that: The first liquid-cooled cable includes a first spiral metal tube, a first copper cable layer, and a first insulation layer. The first copper cable layer is disposed on the outside of the first spiral metal tube and is attached to the outer wall of the first spiral metal tube. The first insulation layer is disposed on the outside of the first copper cable layer. The first oil passage cavity is located inside the first spiral metal tube. The two ends of the first spiral metal tube are respectively connected to the charging gun head and the first terminal block.

3. The two-in and two-out liquid-cooled gun string structure of claim 1, wherein: The second liquid-cooled cable includes a second spiral metal tube, a second copper cable layer, and a second insulation layer. The second copper cable layer is disposed on the outside of the second spiral metal tube and is attached to the outer wall of the second spiral metal tube. The second insulation layer is disposed on the outside of the second copper cable layer. The second oil passage cavity is located inside the second spiral metal tube. The two ends of the second spiral metal tube are respectively connected to the charging gun head and the second terminal block.

4. The two-in and two-out liquid-cooled gun string structure of claim 1, wherein: Both the first and second oil supply pipes are nylon pipes.

5. The two-in and two-out liquid-cooled gun string structure of claim 1, wherein: The insulating jacket also has a filling layer inside.

6. The two-in and two-out liquid-cooled gun string structure of claim 1, wherein: The first liquid guiding connector also includes a first fluororubber ring, which is disposed between the first right-angle connector and the first terminal. The second liquid guide connector also includes a second fluororubber ring, which is disposed between the second right-angle connector and the second terminal block.

7. The two-inlet, two-outlet liquid-cooled gun wire structure according to claim 1, characterized in that: The first liquid guide connector also includes a first O-ring, which is disposed between the upper part of the first liquid-through screw and the first right-angle connector; The second fluid guide connector also includes a second O-ring, which is disposed between the upper part of the second fluid screw and the second right-angle connector.

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