National standard liquid cooling charging seat for new energy automobile

Abstract

The invention discloses a national standard liquid cooling charging seat for a new energy automobile. The national standard liquid cooling charging seat for the new energy automobile comprises a shell, and a liquid cooling module, a water nozzle nut, a liquid cooling cable and a power terminal which are arranged in the shell, an L-shaped liquid cooling box of the liquid cooling module is provided with a rapid liquid cooling cavity of a drainage structure, the inner wall of a heat conduction shaft hole of a vertical shell of the liquid cooling box is wrapped by a first flow channel, the outer wall of the heat conduction shaft hole is attached to and sleeved with the rear end of a power terminal, and a C-shaped heat conduction groove of a horizontal shell of the liquid cooling box is located and attached to a rear end plate of the power terminal or a front end plate of a liquid cooling cable. Two anti-loosening screw tubes at the rear end of the vertical shell are connected with two water nozzle nuts, and ratchet wheels on the end faces of the water nozzle nuts are connected with pawls of the anti-loosening screw tubes; the liquid cooling pipes of the two liquid cooling cables are fixedly communicated with the anti-loosening screw pipe and are rapidly screwed and pressed by the water nozzle nut in a threaded mode, and continuous liquid passing is achieved for rapid cooling of the power terminal and the welding area. The charging seat has the advantages of being good in cooling and heat dissipation effect, safe, efficient and rapid in charging and prolonging the service life of the charging seat.

Description

Technical Field

[0001] The present invention relates to the field of charging seats, and particularly to a national standard liquid-cooled charging seat for new energy vehicles. Background Art

[0002] At present, the new energy industry is developing rapidly. Especially for new energy vehicles, their charging technology increasingly pursues high-power fast charging. When charging, a large amount of heat energy will be released from the power terminals and their connections. Its defects are as follows: the resistance values of the power terminals and connection parts of the charging seat will increase synchronously with the increase of temperature, the heating situation continues, the performance of the terminals will be greatly reduced, directly resulting in a slowdown in the charging speed. At the same time, there is a probability of overheating, combustion or even short circuit of the wires, causing hazards such as short circuit, resulting in power tripping, interrupting the charging process, and even damaging the charging equipment, with potential safety risks and reducing the service life of the charging seat. Summary of the Invention

[0003] In order to solve one or more of the above problems, the present invention provides a national standard liquid-cooled charging seat for new energy vehicles.

[0004] According to one aspect of the present invention, the national standard liquid-cooled charging seat for new energy vehicles includes:

[0005] A housing, the rear end tube of the housing is fixedly sleeved with a plurality of liquid-cooled cables, and the front end tube is fixedly sleeved with a plurality of power terminals. The middle inner cavity of the housing is connected to a liquid-cooling box;

[0006] A liquid-cooling module, the L-shaped liquid-cooling box of the liquid-cooling module is formed by vertically connecting the vertical shell and the end of the horizontal shell. The first flow channel of the vertical shell and the second flow channel of the horizontal shell are connected to form a fast liquid-cooling cavity with a drainage structure. The vertical shell is provided with two laterally symmetrical heat conduction shaft holes. The inner wall of the heat conduction shaft hole is surrounded by the first flow channel and the outer wall is fitted and sleeved with the rear end of the power terminal. The upper end face of the horizontal shell is symmetrically provided with C-shaped heat conduction grooves facing the heat conduction shaft holes. The inner groove wall of the heat conduction groove is positioned and fitted with the rear end plate of the power terminal or the front end plate of the liquid-cooled cable. Two anti-loosening screw tubes are laterally symmetrically provided on the rear end wall of the vertical shell;

[0007] A water nozzle nut, two water nozzle nuts are threadedly connected to the two anti-loosening screw tubes, and the end face ratchet of the water nozzle nut is connected and matched with the pawl at the end of the anti-loosening screw tube;

[0008] Two liquid-cooled cables, the front end plates of the two liquid-cooled cables are welded to the rear end plates. The liquid-cooling tubes of the liquid-cooled cables are fixedly communicated with the anti-loosening screw tubes and are tightly screwed by the water nozzle nuts, continuously passing liquid to quickly cool down the power terminals and the welding area.

[0009] In some embodiments, the liquid-cooling box includes a liquid-cooling box body, two side box covers and two first sealing rings, all of which are L-shaped. The two lateral ports of the liquid-cooling box body are detachably connected to the two side box covers, and a first sealing ring is provided between them.

[0010] In some embodiments, an L-shaped lateral sealing groove is provided at the open end of the liquid cooling box body. The lateral sealing groove has the same contour as the first sealing ring, and the first sealing ring is connected to it by interference fit.

[0011] The outer sealing plates are integrally and horizontally extended from the four peripheral edges of the side box cover. The outer positioning grooves between the outer sealing plates have the same contour dimensions as the two ends of the liquid cooling box body. The two ends of the liquid cooling box body are inserted into the outer positioning grooves with the same contour dimensions, and their outer walls are in contact with the outer sealing plates.

[0012] In some embodiments, the vertical ends of the outer sealing plates are integrally connected with vertical card holes, and the upper and lower horizontal ends are integrally connected with horizontal card holes. The front vertical surface of the liquid cooling box body is integrally provided with vertical buckles, and the upper and lower planes are integrally provided with horizontal buckles. The card holes and the corresponding buckles are respectively clamped.

[0013] In some embodiments, the C-shaped heat conduction groove is located directly behind and below the heat conduction shaft hole. Its lower end has the same contour dimensions as the rear end plate. A reinforcement connecting plate is provided between the two C-shaped heat conduction grooves, and a glue escape groove is formed between the reinforcement connecting plate and the C-shaped heat conduction groove.

[0014] Or the C-shaped heat conduction groove is also provided with a lower groove that cooperates with the front end plate, and the front end plate is positioned and fitted to the lower groove.

[0015] In some embodiments, a flow dividing plate is provided at the upper middle part of the vertical shell of the liquid cooling box body. Two anti-loosening screw pipes are connected to the first flow channels on both sides of the flow dividing plate. The first flow channels of the two arc-shaped cavities respectively surround the upper end and the side end of the heat conduction shaft hole. The rectangular second flow channel of the horizontal shell is located directly below the heat conduction shaft hole and the heat conduction groove. The upper and lower walls of the second flow channel are also provided with diversion blocks that are equally spaced and alternately distributed up and down.

[0016] In some embodiments, the front end of the anti-loosening screw pipe is provided with a locking shoulder with a spindle convex rib structure, and the rear end is provided with a threaded section. A ratchet claw is integrally connected to the rear side of the threaded section.

[0017] The inner hole wall of the water nozzle nut is provided with a locking thread, and the rear end wall is provided with an end face ratchet wheel that cooperates with the ratchet claw.

[0018] The liquid cooling pipe is inserted into the anti-loosening screw pipe and elastically deforms to sleeved on the locking shoulder. Rotate the water nozzle nut. The front end of the locking thread presses against the outer wall of the liquid cooling pipe, and the rear end is threadedly connected to the locking thread until the end face ratchet wheel is cooperatively connected to the ratchet claw.

[0019] In some embodiments, the liquid cooling box includes an L-shaped liquid cooling box body and a front end cover. The front port of the liquid cooling box body and the front end cover are laser welded and sealed into one body.

[0020] A partition plate is provided in the middle of the vertical shell of the liquid cooling box body, and anti-loosening screw pipes are symmetrically provided on both sides of the upper end. Multiple concentric circular arc diversion plates are concentrically provided on both sides of the heat conduction shaft hole of the vertical shell, and each side of the diversion plates forms a first flow channel.

[0021] The depth of the second flow channel of the horizontal shell is greater than that of the first flow channel, and the upper end of the second flow channel is located directly below the heat conduction shaft hole and the heat conduction groove.

[0022] In some embodiments, it further includes a PE terminal. At the two symmetric lateral ends of the front shell of the housing, there are power sockets for sleeving power terminals, and at the center of the longitudinal lower end, there is a PE socket for sleeving the PE terminal. The liquid cooling box is located above the PE socket. The PE terminal and the PE cable are eccentrically welded, and the welded end is exposed and located below the liquid cooling box.

[0023] In some embodiments, the housing includes a front shell, a rear shell, and a front cover;

[0024] The front cover is snap - connected to the front socket of the front shell and is connected to the front shell through an elastic rope;

[0025] The front shell and the rear shell are snap - connected, and the vertical screw hole seat of the front shell and the vertical connection seat of the rear shell are fixedly connected through connecting screws.

[0026] This new - energy vehicle national standard liquid - cooled charging seat has an L - shaped liquid cooling box to cool the main heat - generating areas simultaneously. Its beneficial effects are as follows: First, the L - shaped heat - dissipation structure covers a wide area of the main heat sources (power terminals, welding areas), the water tank has a large volume and a large coolant flow rate, the cooling and heat - dissipation effect is better, the terminals are stably maintained within a safe and appropriate temperature for high - performance operation, the charging speed is stable and fast, and the risk of fire caused by overheating, combustion, or even short - circuit of the wires is avoided, ensuring safe, efficient, and fast charging and extending the service life of the charging seat. Second, a guiding flow channel is set in the cooling cavity to avoid phenomena such as turbulence, the liquid flow speed is fast, and the cooling effect is improved. Third, the end - face ratchet of the water nozzle nut and the pawl of the anti - loosening screw tube are connected and matched to prevent the water nozzle nut from loosening under vibration conditions, realizing the effective fixation of the liquid - cooling pipeline of the liquid - cooling box, thereby avoiding the short - circuit hazard caused by the loosening and leakage of the liquid - cooling pipe, ensuring that the charging equipment is always in a stable operating state, ensuring safe, efficient, and fast charging, and extending the service life of the charging seat. Fourth, the liquid - cooling pipe and the water nozzle nut adopt a threaded quick - screwing structure, which can effectively prevent water leakage and operate safely. Fifth, the heat - conduction groove and the heat - conduction shaft hole are attached to the heat - generating area, with higher heat - dissipation efficiency and better heat - dissipation and cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross - sectional schematic view of the new - energy vehicle national standard liquid - cooled charging seat according to an embodiment of the present invention;

[0028] Figure 2 For Figure 1 The three - dimensional explosion schematic view of the new - energy vehicle national standard liquid - cooled charging seat shown;

[0029] Figure 3 For Figure 2 The three - dimensional explosion schematic view of the liquid - cooling module with a side - mounted cover shown;

[0030] Figure 4 is Figure 3 a three-dimensional schematic diagram of the liquid cooling box shown;

[0031] Figure 5 is Figure 3 a three-dimensional schematic diagram of the water nozzle nut shown;

[0032] Figure 6 is Figure 2 a three-dimensional schematic diagram of the liquid cooling module with a side-mounted cover shown;

[0033] Figure 7 is Figure 6 a three-dimensional schematic diagram of the liquid cooling box shown;

[0034] housing 00, front end housing 2, power insertion tube 21, PE insertion tube 22, vertical screw hole seat 23, rear end housing 3, vertical connection seat 31, wire sealing body 4, tail cover 5;

[0035] liquid cooling module 01, liquid cooling box 1, liquid cooling box body 10, lateral sealing groove 101, buckle 102, baffle 103, flow guide plate 104, vertical housing 11, first flow channel 110, heat conduction shaft hole 111, horizontal housing 12, second flow channel 120, heat conduction groove 121, reinforcement connection plate 122, glue escape groove 123, flow guide block 124, anti-loosening screw tube 13, locking shoulder 131, threaded section 132, ratchet 14, side box cover 15, outer sealing plate 151, card hole 152, first sealing ring 16, front end cover 17;

[0036] water nozzle nut 02, end face ratchet 021, locking thread 022;

[0037] liquid cooling cable 03, front end plate 031, liquid cooling tube 032;

[0038] power terminal 04, rear end plate 041;

[0039] PE terminal 05; PE cable 06;

[0040] circuit board assembly 07; signal terminal 08. Detailed implementation manners

[0041] The present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0042] Figures 1 to 7 Schematically shows a new energy vehicle national standard liquid cooling charging seat according to an embodiment of the present invention. As shown in the figure, the new energy vehicle national standard liquid cooling charging seat includes:

[0043] The housing 00, the rear end tube of the housing 00 is fixedly sleeved with a plurality of liquid cooling cables 03, and the front end tube is fixedly sleeved with a plurality of power terminals 04. The middle inner cavity of the housing 00 is connected to the liquid cooling box 1;

[0044] The liquid cooling module 01, the L-shaped liquid cooling box 1 of the liquid cooling module 01 is formed by vertically connecting the vertical shell 11 and the horizontal shell 12 at the end. The first flow channel 110 of the vertical shell 11 and the second flow channel 120 of the horizontal shell 12 are connected to form a fast liquid cooling cavity with a drainage structure. The vertical shell 11 is provided with two laterally symmetric heat conduction shaft holes 111. The inner wall of the heat conduction shaft hole 111 is surrounded by the first flow channel 110 and the outer wall is fitted and sleeved with the rear end of the power terminal 04. The upper end face of the horizontal shell 12 is symmetrically provided with C-shaped heat conduction grooves 121 facing the heat conduction shaft holes 111. The inner groove wall of the heat conduction groove 121 is positioned and fitted with the rear end plate 041 of the power terminal 04 or the front end plate 031 of the liquid cooling cable 03. Two anti-loosening screw tubes 13 are laterally symmetrically provided on the rear end wall of the vertical shell 11;

[0045] The water nozzle nut 02, the two water nozzle nuts 02 are threadedly connected to the two anti-loosening screw tubes 13 at the rear, and the end face ratchet 021 of the water nozzle nut 02 is connected and matched with the pawl 14 at the end of the anti-loosening screw tube 13. A preferred setting of the water nozzle nut 02 and the anti-loosening screw tube 13 is: the front end of the anti-loosening screw tube 13 is provided with a locking shoulder 131 with a spindle convex rib structure and the rear end is provided with a threaded section 132. The pawl 14 is integrally connected to the rear side of the threaded section 132; the inner hole wall of the water nozzle nut 02 is provided with a locking thread 022 and the rear end wall is provided with an end face ratchet 021 that cooperates with the pawl 14; the liquid cooling tube 032 is inserted into the anti-loosening screw tube 13 and elastically deformed to sleeve the locking shoulder 131. Rotate the water nozzle nut 02, the front end of the locking thread 022 presses the outer wall of the liquid cooling tube 032 and the rear end is threadedly connected to the locking thread 022 until the end face ratchet 021 is connected and matched with the pawl 14.

[0046] The liquid cooling cable 03, the front end plates 031 of the two liquid cooling cables 03 are welded to the rear end plate 041. Its liquid cooling tube 032 is fixedly communicated with the anti-loosening screw tube 13 and is quickly tightened and pressed by the water nozzle nut 02, and continuously supplies liquid to quickly cool down the power terminal 02 and the welding area.

[0047] The national standard liquid-cooled charging seat for new energy vehicles has an L-shaped liquid-cooling box 1 to cool the main heat-generating areas simultaneously. Its beneficial effects are as follows: First, the L-shaped heat dissipation structure covers a large area of the main heat sources (power terminals, welding areas), the water tank has a large volume and a large coolant flow rate, so the cooling and heat dissipation effect is better. The terminals are stably maintained within a safe and appropriate temperature for high-performance operation, the charging speed is stable and fast, and the risk of fire caused by overheating, combustion, or even short circuit of the wires is avoided, ensuring safe, efficient, and fast charging and extending the service life of the charging seat. Second, a guiding flow channel is set in the cooling cavity to avoid phenomena such as turbulence, and the liquid flow speed is fast, improving the cooling effect. Third, the end face ratchet 021 of the water nozzle nut 02 and the pawl 14 of the anti-loosening screw tube 13 are connected and matched to prevent the water nozzle nut from loosening under vibration conditions, effectively fixing the liquid-cooling pipeline 032 of the liquid-cooling box, thereby avoiding the short-circuit hazard caused by the loosening and leakage of the liquid-cooling tube 032, ensuring that the charging equipment is always in a stable operating state, ensuring safe, efficient, and fast charging, and extending the service life of the charging seat. Fourth, the liquid-cooling tube 032 and the water nozzle nut 02 adopt a threaded quick-twist structure, which can effectively prevent water leakage and operate safely. Fifth, heat-conducting grooves 121 and heat-conducting shaft holes 111 are used to fit the heat-generating areas, with higher heat dissipation efficiency and achieving a better heat dissipation and cooling effect.

[0048] Furthermore, Figures 1 to 5 It shows a liquid-cooling box with a side-mounted sealing plate. The liquid-cooling box 1 includes an L-shaped liquid-cooling box body 10, two side box covers 15, and two first sealing rings 16, all of which are L-shaped. The two lateral ports of the liquid-cooling box body 10 are detachably connected to the two side box covers 15, and a first sealing ring 16 is provided between them. Its beneficial effects are as follows: The side of the liquid-cooling box body 10 is through and sealed in this setting, reducing the use of sealing rings and increasing the contact area of the coolant, having a better heat dissipation effect. At the same time, the sealing ring is far from the heat-generating area, avoiding the aging phenomenon caused by long-term high-temperature use.

[0049] Preferably, an L-shaped lateral sealing groove 101 is provided at the open end of the liquid-cooling box body 10. The lateral sealing groove 101 has the same contour as the first sealing ring 16, and it is in interference connection with the first sealing ring 16;

[0050] The outer sealing plates 151 are integrally and horizontally extended from the four peripheral edges of the side box cover 15. The outer positioning grooves between the outer sealing plates 151 have the same contour dimensions as the two ends of the liquid-cooling box body 10. The two ends of the liquid-cooling box body 10 are inserted into the outer positioning grooves with the same contour dimensions, and their outer walls are attached to the outer sealing plates 151. Its beneficial effects are as follows: This setting has good installation positioning performance and sealing performance for good and long-term heat dissipation.

[0051] Preferably, the vertical ends of the outer sealing plate 151 are integrally connected to the vertical card holes 152, and its upper and lower horizontal ends are integrally connected to the horizontal card holes 152. The front vertical surface of the liquid cooling box body 10 is integrally provided with vertical buckles 102, and the upper and lower planes are integrally provided with horizontal buckles 102. The card holes 152 and the corresponding buckles 102 are respectively clamped. The beneficial effect is that this connection structure realizes the fastening connection around.

[0052] Preferably, the C-shaped heat conduction groove 121 is located directly behind the heat conduction shaft hole 111. Its lower end has the same contour size as the rear end plate 041, and a reinforcing connecting plate 122 is provided between the two C-shaped heat conduction grooves 121. A glue escape groove 123 is formed between the reinforcing connecting plate 122 and the C-shaped heat conduction groove 121. The beneficial effect is that this structure has certain elastic properties, has the performance of accurately fitting and positioning the terminals, and conducts efficient tail heat dissipation.

[0053] Preferably, the C-shaped heat conduction groove 121 is also provided with a lower groove that cooperates with the front end plate 031, and the front end plate 031 is positioned and fitted to the lower groove. The beneficial effect is that this setting dissipates heat from all areas of the connection end at the same time, and has a better heat dissipation effect.

[0054] Preferably, a flow dividing plate is provided at the upper middle of the vertical shell 11 of the liquid cooling box body 10. Two anti-loosening screw pipes 13 are connected to the first flow channels 110 on both sides of the flow dividing plate. The first flow channels 110 of the two arc-shaped cavities respectively surround the upper end and the side end of the heat conduction shaft hole 111. The rectangular second flow channel 120 of the horizontal shell 12 is located directly below the heat conduction shaft hole 111 and the heat conduction groove 121. Flow guiding blocks 124 are also provided on the upper and lower walls of the second flow channel 120 at equal intervals and distributed alternately;

[0055] The circulating liquid flows through the first flow channel 110 on one side, the second flow channel 120 and the first flow channel 110 on the other side to rapidly cool down the power terminal 02 and the welding area. The beneficial effect is that this heat dissipation box is provided with flow channels, which can conduct good liquid diversion, avoid phenomena such as turbulence, and has a fast liquid flow speed, improving the cooling effect.

[0056] Furthermore, Figures 6 to 7 A liquid cooling box with a front sealing plate structure is schematically shown. The liquid cooling box 1 includes an L-shaped liquid cooling box body 10 and a front end cover 17. The front port of the liquid cooling box body 10 and the front end cover 17 are laser welded and sealed into one body;

[0057] A partition plate 103 is provided in the middle of the vertical shell 11 of the liquid cooling box body 10, and anti-loosening screw pipes 13 are symmetrically provided on both sides of the upper end. A plurality of concentric arc-shaped flow guiding plates 104 are concentrically provided on both sides of the heat conduction shaft hole 111 of the vertical shell 11. Each side of the flow guiding plate 104 forms a first flow channel 010;

[0058] The depth of the second flow channel 120 of the horizontal shell 12 is greater than that of the first flow channel 110, and the upper end of the second flow channel 120 is located directly below the heat conduction shaft hole 111 and the heat conduction groove 121. The beneficial effect is that the heat dissipation box is provided with flow channels, which can conduct liquid well, avoid phenomena such as turbulence, have a fast liquid flow speed, and improve the cooling effect.

[0059] Furthermore, it also includes a PE terminal 05. The power plug sockets 21 for sleeving the power terminals 04 are symmetrically arranged at the transverse two ends of the front shell 2 of the outer shell 00, and a PE plug socket 22 for sleeving the PE terminal 05 is provided at the center of the longitudinal lower end. The liquid cooling box 1 is located above the PE plug socket 22. The PE terminal 05 and the PE cable 06 are eccentrically welded, and the welded end is exposed and located below the liquid cooling box 1. The axes of the PE cable 06 and the PE terminal 05 are eccentrically arranged to realize the eccentric welding process, avoiding the interference of the PE cable 06 with the liquid cooling box. The beneficial effect is that the eccentric welding structure avoids the spatial interference problem between the PE jack position specified by the national standard and the liquid cooling box, simplifies the structure of the liquid cooling box, and reduces the risk of liquid leakage.

[0060] Furthermore, the outer shell 00 includes a front shell 2, a rear shell 3, and a front cover;

[0061] The front cover is snap-fitted into the front socket of the front shell 2 and is connected to one side of the front shell 2 through an elastic cord;

[0062] The front shell 2 and the rear shell 3 are snap-fitted, and a vertical screw hole seat 23 is provided at the rear end of the front shell 2, and a vertical connecting seat 31 is provided at the front end of the rear shell 3. The connecting screw passes through the vertical connecting seat 31 and is threadedly connected to the vertical screw hole seat 23;

[0063] The wire pipe at the rear end of the rear shell 3 is snap-fitted with the tail cover 5 and the inner hole sleeves the wire sealing body 4. The power terminal 04 passes through the tail cover 05 and the wire sealing body 4 and enters the front cavity of the rear shell 3;

[0064] It also includes a circuit board assembly 07. After the circuit board assembly 07 is fixedly connected to the front shell 2, the signal terminal 08 fixed in the front shell 2 through a drum spring connection. The beneficial effect is that this setting realizes good positioning, anti-rotation, and insulation functions of the terminals.

[0065] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. The national standard liquid-cooled charging station for new energy vehicles is characterized by: include: A shell (00), wherein a rear end tube of the shell (00) is fixedly sleeved with a plurality of liquid cooling cables (03) and a front end tube is fixedly sleeved with a plurality of power terminals (04), and a middle inner cavity of the shell (00) is connected to a liquid cooling box (1); The liquid cooling module (01) comprises an L-shaped liquid cooling box (1) formed by vertically connecting the ends of a vertical shell (11) and a horizontal shell (12), wherein a first flow channel (110) of the vertical shell (11) and a second flow channel (120) of the horizontal shell (12) are connected to form a rapid liquid cooling chamber having a drainage structure, and the vertical shell (11) is provided with two transversely symmetrical heat conduction shaft holes (111), and the inner wall of the heat conduction shaft hole (111) is formed by a first The flow channel (110) surrounds and the outer wall fits the rear end of the power terminal (04), the upper end surface of the horizontal shell (12) is symmetrically provided with a C-shaped heat conduction groove (121) facing the heat conduction axis hole (111), the inner groove wall of the heat conduction groove (121) is positioned to fit the rear end plate (041) connected to the power terminal (04) or the front end plate (031) of the liquid cooling cable (03), and two anti-loosening screws (13) are symmetrically provided on the rear end wall of the vertical shell (11); A faucet nut (02), wherein two faucet nuts (02) are threadedly connected to two anti-loosening screw tubes (13), and an end face ratchet (021) of the faucet nut (02) is connected to a ratchet pawl (14) at the end of the anti-loosening screw tube (13); A liquid-cooled cable (03), wherein the front end plates (031) of the two liquid-cooled cables (03) are welded to the rear end plates (041), wherein the liquid-cooling pipe (032) is fixedly connected to the anti-loosening screw tube (13) and is tightened by the water nozzle nut (02) thread, and the continuous liquid flow is used to quickly cool the power terminal (02) and the welding area.

2. The national standard liquid-cooled charging station for new energy vehicles according to claim 1, characterized in that: The liquid cooling box (1) comprises an L-shaped liquid cooling box body (10), two side box covers (15) and two first sealing rings (16); two lateral ports of the liquid cooling box body (10) are detachably connected to the two side box covers (15), and a first sealing ring (16) is provided between the two.

3. The national standard liquid-cooled charging station for new energy vehicles according to claim 2, characterized in that: An L-shaped lateral sealing groove (101) is provided at the open portion of the liquid cooling box (10), the lateral sealing groove (101) has the same profile as the first sealing ring (16), and is interference-connected with the first sealing ring (16); The edges of the side box cover (15) are integrally extended transversely to form an outer sealing plate (151); the outer positioning grooves between the outer sealing plates (151) have the same outline dimensions as the two ends of the liquid cooling box (10); the two ends of the liquid cooling box (10) have the same outline dimensions and are inserted into the outer positioning grooves, and their outer walls fit the outer sealing plates (151).

4. The national standard liquid-cooled charging station for new energy vehicles according to claim 3, characterized in that: The vertical end of the outer sealing plate (151) is integrally connected to the vertical clamping hole (152) and the upper and lower horizontal ends thereof are integrally connected to the horizontal clamping hole (152); the front vertical surface of the liquid cooling box (10) is integrally provided with a vertical clamping buckle (102) and the upper and lower planes are integrally provided with a horizontal clamping buckle (102); the clamping holes (152) and the corresponding clamping buckles (102) are respectively clamped.

5. The national standard liquid-cooled charging station for new energy vehicles according to claim 3, characterized in that: The C-shaped heat-conducting groove (121) is located directly behind the heat-conducting shaft hole (111), and its lower end has the same outline size as the rear end plate (041), and a reinforcing connecting plate (122) is provided between the two C-shaped heat-conducting grooves (121), and a glue escape groove (123) is formed between the reinforcing connecting plate (122) and the C-shaped heat-conducting groove (121); Alternatively, the C-shaped heat-conducting groove (121) is further provided with a lower groove that matches the front end plate (031), and the front end plate (031) is positioned to fit the lower groove.

6. The national standard liquid-cooled charging station for new energy vehicles according to claim 2, characterized in that: A diverter plate is provided at the middle upper end of the vertical shell (11) of the liquid cooling box (10); two anti-loosening screws (13) are connected to the first flow channels (110) on both sides of the diverter plate; the first flow channels (110) of the two arc cavities respectively surround the upper end and the side end of the heat conduction shaft hole (111); the rectangular second flow channel (120) of the horizontal shell (12) is located directly below the heat conduction shaft hole (111) and the heat conduction groove (121); and the upper and lower walls of the second flow channel (120) are also provided with flow guide blocks (124) which are evenly spaced and alternately distributed above and below.

7. The national standard liquid-cooled charging station for new energy vehicles according to claim 1, characterized in that: The anti-loosening screw tube (13) is provided with a locking shoulder (131) with a spindle ridge structure at the front end and a threaded section (132) at the rear end, and the rear side of the threaded section (132) is integrally connected to a ratchet (14); The inner hole wall of the water nozzle nut (02) is provided with a locking thread (022) and the rear end wall is provided with an end face ratchet (021) that cooperates with the ratchet pawl (14); The liquid cooling tube (032) is inserted into the anti-loosening screw tube (13) and elastically deforms to be sleeved on the locking shoulder (131), and the faucet nut (02) is rotated, so that the front end of the locking thread (022) presses the outer wall of the liquid cooling tube (032) and the rear end is threadedly connected to the locking thread (022) until the end face ratchet (021) cooperates with the connecting pawl (14).

8. The national standard liquid-cooled charging station for new energy vehicles according to claim 1, characterized in that: The liquid cooling box (1) comprises an L-shaped liquid cooling box body (10) and a front end cover (17), wherein the front port of the liquid cooling box body (10) and the front end cover (17) are laser welded and sealed into one body; A flow partition (103) is provided in the middle of the vertical shell (11) of the liquid cooling box (10), and anti-loosening screw tubes (13) are symmetrically provided on both sides of the upper end, and multiple circles of concentric arc flow guide plates (104) are concentrically provided on both sides of the heat conduction shaft hole (111) of the vertical shell (11), and the flow guide plates (104) on each side form a first flow channel (010); The depth of the second flow channel (120) of the horizontal shell (12) is greater than that of the first flow channel (110), and the upper end of the second flow channel (120) is located directly below the heat conduction shaft hole (111) and the heat conduction groove (121).

9. The national standard liquid-cooled charging station for new energy vehicles according to claim 1, characterized in that: It also includes a PE terminal (05), power plugs (21) for connecting to the power terminal (04) are symmetrically arranged at both ends of the front end shell (2) of the housing (00) in the horizontal direction, and a PE plug (22) for connecting to the PE terminal (05) is arranged at the center of the lower end in the longitudinal direction, the liquid cooling box (1) is located above the PE plug (22), and the PE terminal (05) and the PE cable (06) are eccentrically welded, and the welding end thereof is exposed and located below the liquid cooling box (1).

10. The national standard liquid-cooled charging station for new energy vehicles according to claim 1, characterized in that: The housing (00) comprises a front end housing (2), a rear end housing (3) and a front end cover; The front end cover is snap-fitted to the front end socket of the front end shell (2) and is connected to the front end shell (2) via an elastic rope; The front end shell (2) and the rear end shell (3) are snap-connected, and the vertical screw hole seat (23) of the front end shell (2) and the vertical joint seat (31) of the rear end shell (3) are fixedly connected by connecting screws.

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