Gun head mechanism and charging gun

Abstract

The present invention relates to the technical field of charging guns, and in particular to a gun head mechanism and a charging gun. The gun head mechanism includes a gun shell with a mounting cavity and a cooling assembly and a terminal assembly arranged in the mounting cavity. The cooling assembly includes a cooling shell and a cooling pipe. The cooling shell is provided with a heat conduction cavity and a packaging cavity that are connected. One end of the cooling pipe is arranged in the heat conduction cavity, and the other end of the cooling pipe passes through the packaging cavity and extends out of the cooling shell. The terminal assembly is arranged on the peripheral side of the cooling shell. The heat conduction cavity is used to inject thermal conductive glue, and the packaging cavity is used to inject a packaging medium to fix the cooling pipe and the cooling shell. The setting of injecting the packaging medium into the packaging cavity can fix and package the position where the cooling pipe extends out of the cooling shell, improve the assembly stability of the cooling pipe and the cooling shell, avoid shaking at the connection between the liquid cooling pipeline and the cooling shell, and improve the liquid cooling reliability in the charging state.

Description

Technical Field

[0001] The present invention relates to the technical field of charging guns, and in particular to a gun head mechanism and a charging gun. Background Art

[0002] As a key component connecting the charging port and the charging device, the charging gun plays an indispensable role in the charging process of new energy vehicles. During charging, the power terminals on the charging gun's head heat up rapidly, generating a significant amount of heat. Failure to cool the terminals in a timely manner can cause burnout and potentially lead to safety accidents. Most current charging guns use liquid cooling components to cool the power terminals, reducing the operating temperature and ensuring safety during charging.

[0003] In the prior art, the cooling shell and terminals are assembled, a liquid cooling line is installed in the cooling shell, and thermally conductive adhesive is applied between the liquid cooling line and the cooling shell. The liquid cooling line is then connected to an external liquid cooling pipe. The thermally conductive adhesive is relatively soft, and the liquid cooling pipe can pull on the liquid cooling pipe during assembly or use, causing the connection between the liquid cooling line and the cooling shell to wobble, reducing the reliability of the liquid cooling during charging. Summary of the Invention

[0004] The main purpose of the present invention is to provide a gun head mechanism, which aims to solve the technical problems that the existing empty seat and charging gun are inconvenient to use force when plugging together, and the connection between the cable and the gun tail is prone to deformation or damage.

[0005] To achieve the above-mentioned purpose, the gun head mechanism proposed by the present invention includes:

[0006] a gun housing, wherein the gun housing is provided with a mounting cavity;

[0007] a cooling assembly disposed in the mounting cavity, the cooling assembly comprising a cooling shell and a cooling pipe, the cooling shell being provided with a heat-conducting cavity and a packaging cavity in communication, one end of the cooling pipe being disposed in a heat-conducting adhesive in the heat-conducting cavity, and the other end of the cooling pipe passing through a packaging medium in the packaging cavity and extending out of the cooling shell; and

[0008] A terminal assembly is provided in the installation cavity and is provided on the peripheral side of the cooling shell.

[0009] In one embodiment of the present invention, the cooling shell comprises:

[0010] a shell body, wherein the shell body is provided with the heat conduction cavity, and the terminal assembly is located on a peripheral side of the shell body; and

[0011] The packaging part is protruding from one side of the shell body, and the packaging cavity is formed through the packaging part.

[0012] In one embodiment of the present invention, the arrangement direction of the packaging cavity and the heat conduction cavity is parallel to the extension direction of the terminal assembly;

[0013] And / or, in a direction perpendicular to the extension direction of the terminal assembly, the cross-sectional area of ​​the packaging cavity is greater than or equal to the cross-sectional area of ​​the heat conduction cavity.

[0014] In one embodiment of the present invention, a cavity wall of the packaging cavity is provided with a step, and the step separates the packaging cavity into a glue-spraying cavity and a cover cavity, and the glue-spraying cavity is located between the heat-conducting cavity and the cover cavity;

[0015] The cooling assembly further includes a cover plate, which is arranged in the sealing cavity to seal the glue-spraying cavity, and a through hole for the cooling pipe to pass through is formed on the cover plate.

[0016] In one embodiment of the present invention, a plurality of heat dissipation channels are formed through the shell body;

[0017] The plurality of heat dissipation channels are spaced and distributed on both sides of the package;

[0018] An extending direction of each of the heat dissipation channels is parallel to an extending direction of the terminal assembly.

[0019] In one embodiment of the present invention, at least one protrusion is convexly provided on the outer periphery of the cooling shell;

[0020] The gun head mechanism further comprises a threading plate arranged in the mounting cavity, the threading plate being provided with an assembly groove and a clamping groove communicating with the assembly groove;

[0021] The cooling shell is detachably arranged in the assembly groove, and the terminal assembly is clamped in the clamping groove, so that the terminal assembly is attached to the outer peripheral wall of the cooling shell.

[0022] In one embodiment of the present invention, at least one protrusion is convexly provided on the outer periphery of the cooling shell, and at least one locking hole is provided on the groove wall of the assembly groove, and one of the protrusions is locked in one of the locking holes.

[0023] In one embodiment of the present invention, one end of the cooling pipe extending out of the cooling shell is provided with two joints extending in the same direction;

[0024] The cooling assembly further includes a connector and two liquid cooling pipes, wherein one connector is connected to the other liquid cooling pipe;

[0025] The two ends of the connecting member are respectively provided with a first fixing portion and a second fixing portion, the first fixing portion is sleeved on the cooling pipe, and the second fixing portion is sleeved on the liquid cooling pipe.

[0026] In one embodiment of the present invention, a fixing groove is provided between the first fixing portion and the second fixing portion;

[0027] The cooling assembly further includes a leak detection component, which is arranged in the fixing groove, and the connection between the liquid cooling pipe and the cooling pipe is suspended above the leak detection component.

[0028] The present invention also provides a charging gun, comprising:

[0029] Receiver mechanism; and

[0030] The gun head mechanism as described in any of the above items, wherein the gun head mechanism is detachably connected to the gun body mechanism.

[0031] The gun head mechanism of the technical solution of the present invention includes a gun shell with a mounting cavity and a cooling assembly and a terminal assembly arranged in the mounting cavity. The cooling assembly includes a cooling shell and a cooling tube. The cooling shell is provided with a heat-conducting cavity and a packaging cavity that are connected. One end of the cooling tube is arranged in the heat-conducting cavity, and the other end of the cooling tube passes through the packaging cavity and extends out of the cooling shell. The terminal assembly is arranged on the peripheral side of the cooling shell. The heat-conducting cavity is used to inject thermal conductive glue, and the packaging cavity is used to inject a packaging medium to fix the cooling tube and the cooling shell. The setting of injecting the packaging medium into the packaging cavity can fix and package the position where the cooling tube extends out of the cooling shell, improve the assembly stability of the cooling tube and the cooling shell, avoid shaking at the connection between the cooling tube and the cooling shell, and improve the liquid cooling reliability in the charging state. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the gun head mechanism of the present invention;

[0034] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the gun head mechanism of the present invention;

[0035] Figure 3 This is a schematic diagram of the partial exploded structure of an embodiment of the gun head mechanism of the present invention;

[0036] Figure 4 This is a schematic diagram of the cooling assembly assembly structure of an embodiment of the gun head mechanism of the present invention;

[0037] Figure 5 For the gun head mechanism of the present invention Figure 4 A front view structural diagram of an embodiment;

[0038] Figure 6For the gun head mechanism of the present invention Figure 4 A schematic top view of the cross-sectional structure of an embodiment;

[0039] Figure 7 This is a schematic diagram of the exploded structure of the cooling shell and cooling tube of an embodiment of the gun head mechanism of the present invention;

[0040] Figure 8 This is a front view structural diagram of a cooling shell of an embodiment of a gun head mechanism of the present invention;

[0041] Figure 9 A schematic top view of the cross-sectional structure of a cooling shell of a gun head mechanism according to an embodiment of the present invention;

[0042] Figure 10 A schematic diagram of the three-dimensional structure of a threading plate of a gun head mechanism according to an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the exploded structure of the connecting piece, the leak detection piece and the clamp of an embodiment of the gun head mechanism of the present invention;

[0044] Figure 12 This is a schematic diagram of the oblique front and side three-dimensional assembly structure of an embodiment of a charging gun of the present invention;

[0045] Figure 13 This is a schematic diagram of the exploded structure of a charging gun according to an embodiment of the present invention from the rear and side perspective;

[0046] Figure 14 This is a schematic side-sectional assembly diagram of an embodiment of a charging gun of the present invention;

[0047] Figure 15 For the charging gun of the present invention Figure 14 Schematic diagram of the enlarged structure of part Q of the embodiment.

[0048] Description of Figure Numbers:

[0049] Label name Label name Label name 100 Gun head mechanism 30 Cooling components 50 Terminal assembly 10 gun shell 31 Cooling shell 51 Power terminals 10A Mounting cavity 31A Thermal cavity 52 Ground terminal 11 Assembly pins 31B Package cavity 53 Signal terminal 12 Pallet 31C Card slot 70 Threading board 200 Charging gun 31D heat dissipation channel 70A Mounting slot 20 Gun body mechanism 31E Limit slot 70B card slot 20A cavity 311 Shell body 71 Positioning Department 21 shell 312 Package 72 plate body 22 Locking rod 313 bulge 31F stairs 23 Motor lock 32 cooling pipe 311B Glue cavity 24 screws 321 connector 312B Covering cavity 25 seals 33 Liquid cooling tube 35 Leak detection parts 341 First fixing part 34 Connectors 36 clamp 342 Second fixing part 34A Fixed slot

[0050] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that meet both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] As a key component connecting the charging port and the charging device, the charging gun plays an indispensable role in the charging process of new energy vehicles. During charging, the power terminals on the charging gun's head heat up rapidly, generating a significant amount of heat. Failure to cool the terminals in a timely manner can cause burnout and potentially lead to safety accidents. Most current charging guns use liquid cooling components to cool the power terminals, reducing the operating temperature and ensuring safety during charging.

[0056] In the prior art, the cooling shell and terminals are assembled, a liquid cooling line is installed in the cooling shell, and thermally conductive adhesive is applied between the liquid cooling line and the cooling shell. The liquid cooling line is then connected to an external liquid cooling pipe. The thermally conductive adhesive is relatively soft, and the liquid cooling pipe can pull on the liquid cooling pipe during assembly or use, causing the connection between the liquid cooling line and the cooling shell to wobble, reducing the reliability of the liquid cooling during charging.

[0057] The present invention proposes a gun head mechanism 100. The gun head mechanism 100 can be applied to national standard charging guns, and can also be applied to American standard, European standard and other non-standard charging guns. Figures 1 to 11 , charging gun reference Figures 12 to 15 shown.

[0058] In the embodiment of the present invention, the gun head mechanism 100 includes a gun housing 10, a cooling assembly 30 and a terminal assembly 50. Figures 1 to 7 As shown, the gun housing 10 is provided with a mounting cavity 10A, a cooling assembly 30 and a terminal assembly 50 (see Figure 2 and Figure 3 ) are all arranged in the mounting cavity 10A. Cooling assembly 30 (refer to Figures 4 to 7 ) includes a cooling shell 31 and a cooling tube 32. The cooling shell 31 has a connected heat conduction cavity 31A and an encapsulation cavity 31B. One end of the cooling tube 32 is disposed within the thermally conductive adhesive of the heat conduction cavity 31A, while the other end of the cooling tube 32 passes through the encapsulation medium of the encapsulation cavity 31B and extends outside the cooling shell 31. The terminal assembly 50 is disposed within the mounting cavity 10A and is disposed on the peripheral side of the cooling shell 31.

[0059] The gun head mechanism 100 of the technical solution of the present invention includes a gun housing 10 with a mounting cavity 10A and a cooling assembly 30 and a terminal assembly 50 arranged in the mounting cavity 10A. The cooling assembly 30 includes a cooling shell 31 and a cooling tube 32. The cooling shell 31 is provided with a heat-conducting cavity 31A and a packaging cavity 31B that are connected to each other. One end of the cooling tube 32 is arranged in the heat-conducting cavity 31A, and the other end of the cooling tube 32 passes through the packaging cavity 31B and extends out of the cooling shell 31. The terminal assembly 50 is arranged on the peripheral side of the cooling shell 31. The heat-conducting cavity 31A is used to inject thermal conductive glue, and the packaging cavity 31B is used to inject packaging medium to fix the cooling tube 32 and the cooling shell 31. The setting of injecting packaging medium into the packaging cavity 31B can fix and package the position where the cooling tube 32 extends out of the cooling shell 31, improve the assembly stability of the cooling tube 32 and the cooling shell 31, avoid shaking at the connection between the cooling tube 32 and the cooling shell 31, and improve the liquid cooling reliability in the charging state.

[0060] It is understandable that the heat-conducting cavity 31A is used to inject thermally conductive glue, and the packaging cavity 31B is used to inject packaging medium to fix the cooling tube 32 and the cooling shell 31. The thermally conductive glue is a soft glue with a relatively soft texture and good thermal conductivity. The packaging medium is a rigid packaging glue, such as an epoxy packaging glue or an ultraviolet light-curing packaging glue. The rigidity of the packaging glue is greater than that of the thermally conductive glue. In addition to having a certain sealing effect on the heat-conducting cavity 31A that accommodates the thermally conductive glue, it can also reinforce and stabilize the portion of the cooling tube 32 located in the packaging cavity 31B when it extends out of the cooling shell 31, thereby preventing the cooling tube 32 from shaking relative to the cooling shell 31 and improving the stability of the assembly of the cooling tube 32 and the cooling shell 31.

[0061] Combined with reference Figure 8 and Figure 9 As shown, the cooling shell 31 is made of a material with good insulation and thermal conductivity, such as ceramic, or other materials with such properties. The cooling tube 32 can be made of a metal material with good thermal conductivity, such as an aluminum tube, a copper tube, etc. The cooling tube 32 is used to pass a cooling medium into the gun head mechanism 100 to transfer heat through the thermally conductive adhesive and the cooling shell 31. During charging, the heat generated by the terminal assembly 50 is transferred to the thermally conductive adhesive through the cooling shell 31, and then transferred to the cooling medium in the tube through the cooling tube 32, and the heat is discharged along with the cooling medium.

[0062] Combined with reference Figure 2 and Figure 3 As shown, the terminal assembly 50 further includes at least one power terminal 51. In one specific embodiment, the terminal assembly 50 includes two power terminals 51 for carrying high-voltage power, a ground terminal 52, and at least one signal terminal 53. The extension direction of the terminal assembly 50 is defined as the Y-axis direction, the parallel distribution direction of the two power terminals 51 is defined as the X-axis direction, and the direction perpendicular to the X-axis and Y-axis is defined as the Z-axis direction. The X-axis, Y-axis, and Z-axis form a spatial rectangular coordinate system. The following description of various embodiments is based on this spatial rectangular coordinate system.

[0063] Furthermore, the two power terminals 51 are respectively located on both sides of the cooling shell 31 along the X-axis direction. Each power terminal 51 includes a terminal body and an adapter connected to one end of the terminal body. One side of the adapter is crimped to one end of the cable, and the other side is attached to the peripheral wall of the cooling shell 31 to improve the heat transfer efficiency.

[0064] Specific reference Figures 7 to 9 As shown, in one embodiment of the present invention, the cooling shell 31 includes a shell body 311 and an encapsulation member 312. The shell body 311 is provided with a heat conduction cavity 31A, and the terminal assembly 50 is located on the peripheral side of the shell body 311. The encapsulation member 312 is protruded from one side of the shell body 311 and has an encapsulation cavity 31B extending therethrough.

[0065] In this embodiment, the encapsulation member 312 protrudes from one end of the shell body 311 along the Y-axis. To facilitate assembly, the heat-conducting cavity 31A of the encapsulation member 312 is opened toward the end where the cable extends into the mounting cavity 10A. One end of the heat-conducting cavity 31A is encapsulated within the cooling shell 31, and the other end is provided with a first opening. The cooling tube 32 extends into the heat-conducting cavity 31A of the cooling tube 32 through the first opening. The heat-conducting cavity 31A is located in the central region of the cooling shell 31. The encapsulation member 312 is provided at the first opening. The encapsulation cavity 31B extends through the encapsulation member 312 along the Y-axis and connects to the heat-conducting cavity 31A through the first opening. The encapsulation member 312 is used for applying encapsulation glue. However, the provision of the encapsulation member 312 does not occupy the space for applying thermal adhesive in the shell body 311, allowing sufficient thermal adhesive to be injected into the cooling shell 31, thereby improving heat exchange. The encapsulation glue is injected into the encapsulation cavity 31B to secure the protruding portion of the cooling tube 32, thereby improving the structural stability of the relative assembly position of the cooling tube 32 and the shell body 311.

[0066] In one embodiment of the present invention, the arrangement direction of the packaging cavity 31B and the heat conduction cavity 31A is parallel to the extension direction of the terminal assembly 50; and / or, in a direction perpendicular to the extension direction of the terminal assembly 50, the cross-sectional area of ​​the packaging cavity 31B is greater than or equal to the cross-sectional area of ​​the heat conduction cavity 31A.

[0067] In this embodiment, the packaging member 312 is protruded from one end of the shell body 311 along the Y-axis direction, and the extension direction of the terminal assembly 50 is the Y-axis direction. The heat conduction cavity 31A and the packaging cavity 31B are arranged in sequence along the Y-axis, and the packaging cavity 31B is located at the outer end of the heat conduction cavity 31A to encapsulate the cooling shell 31 with glue. When the packaging glue fixes the relative position relationship between the cooling tube 32 and the shell body 311, it also has the function of encapsulating the thermal conductive glue in the heat conduction cavity 31A, thereby preventing the thermal conductive glue from overflowing and improving the heat exchange efficiency.

[0068] In another embodiment, based on the extension direction of the terminal assembly 50 in the Y-axis direction, the cross-sectional area of ​​the packaging cavity 31B is greater than or equal to the cross-sectional area of ​​the heat-conducting cavity 31A, that is, the cross-sectional area of ​​the packaging cavity 31B along the O-XZ plane is greater than the cross-sectional area of ​​the heat-conducting cavity 31A along the O-XZ plane, thereby improving the packaging reliability and the reliability of sealing the thermal conductive adhesive, so that the thermal conductive adhesive will not overflow.

[0069] In one embodiment of the present invention, a step 31F is provided on the cavity wall of the packaging cavity 31B, and the step 31F divides the packaging cavity 31B into a gluing cavity 311B and a sealing cavity 312B. The gluing cavity 311B is located between the heat conduction cavity 31A and the sealing cavity 312B; the cooling assembly 30 also includes a cover plate (not shown), which is provided in the sealing cavity 312B to seal the gluing cavity 311B, and a through hole is provided on the cover plate for the cooling pipe 32 to pass through.

[0070] In this embodiment, the packaging component 312 is formed with a second opening on the side facing away from the first opening. The second opening is formed as a through-opening at one end of the packaging cavity 31B facing away from the heat transfer cavity 31A. The cavity wall of the packaging cavity 31B is provided with a step 31F so that the packaging cavity 31B can form a glue cavity 311B and a cover cavity 312B with unequal cross-sectional areas along the O-XZ plane. The cover cavity 312B is used to install a cover plate to seal and limit the thermal conductive glue in the heat transfer cavity 31A and the packaging glue in the glue cavity 311B. The cover plate is provided with a through hole corresponding to the extension of the cooling tube 32, so that the end of the cooling tube 32 connected to the liquid cooling inlet can extend out of the cooling shell 31. The cover plate and the packaging component 312 are interference fit, cut or screwed together to improve the position stability of the glue in the cooling shell 31 and prevent overflow after the glue expands or deforms.

[0071] Furthermore, the number of cooling tubes 32 in the above embodiment can be set to one or more, and the number of through-holes in the cover plate corresponds to the structure of the cooling tube 32. The cooling tube 32 can be a U-shaped tube, with two tube walls extending outside the cooling shell 31 along the Y-axis direction, one tube wall serving as a liquid inlet pipe and the other as a liquid outlet pipe, and the connection between the U-shaped tubes forms a circulating liquid cooling circuit to improve the liquid cooling effect.

[0072] When only one cooling tube 32 is provided, the two tube walls of the U-shaped tube are arranged in parallel along the X-axis direction so as to be as close to the power terminal 51 as possible, thereby improving the heat dissipation efficiency of the power terminal 51 .

[0073] When two cooling tubes 32 are provided, the two U-shaped tubes can be arranged in parallel along the X-axis direction or in parallel along the Z-axis direction, thereby increasing the heat exchange area and improving the heat dissipation speed.

[0074] like Figure 9 As shown, further, a limiting groove 31E adapted for the U-shaped connection of the cooling pipe 32 is provided on at least one side wall of the heat conduction cavity 31A accommodating the cooling pipe 32. The limiting groove 31E is used to limit the placement position of the cooling pipe 32, and cooperate with the packaging glue and the cover plate to limit the relative position of the cooling pipe 32, thereby improving the assembly stability of the cooling pipe 32 and the shell body 311.

[0075] In one embodiment of the present invention, a plurality of heat dissipation channels 31D are formed through the shell body 311 ; the plurality of heat dissipation channels 31D are spaced apart and distributed on both sides of the package 312 ; and the extension direction of each heat dissipation channel 31D is parallel to the extension direction of the terminal assembly 50 .

[0076] In this embodiment, the package 312 is provided with a plurality of spaced heat dissipation channels 31D on the upper and lower sides along the Z-axis direction, and each heat dissipation channel 31D is extended along the Y-axis direction. The heat dissipation channel 31D is used to connect the plug-in cavity of the gun head assembly on the side where the power terminal 51 extends. When the power terminal 51 is charging, part of the heat from the terminal and the terminal plug-in point will be dissipated into the air around the terminal. The heat dissipation channel 31D is used to introduce the heat in the air around the terminal into the cooling shell 31 so as to remove the heat through the cooling medium, thereby improving the heat dissipation efficiency.

[0077] Combine Figure 2 、 Figure 3 as well as Figure 10 As shown, in one embodiment of the present invention, the gun head mechanism 100 also includes a threading plate 70 arranged in the installation cavity 10A, and the threading plate 70 is provided with an assembly groove 70A and a card slot 70B connected to the assembly groove 70A; the cooling shell 31 is detachably arranged in the assembly groove 70A, and the terminal assembly 50 is carded in the card slot 70B, so that the terminal assembly 50 is attached to the outer wall of the cooling shell 31.

[0078] In one embodiment of the present invention, at least one protrusion 313 is protruded from the outer periphery of the cooling shell 31; the gun head mechanism 100 also includes a threading plate 70 arranged in the installation cavity 10A, the threading plate 70 is provided with an assembly groove 70A, and the groove wall of the assembly groove 70A is provided with at least one locking hole (not shown); the cooling shell 31 is detachably arranged in the assembly groove 70A, so that the terminal assembly 50 is attached to the outer peripheral wall of the cooling shell 31, and a protrusion 313 is engaged in a locking hole.

[0079] In this embodiment, the threading plate 70 is disposed within the mounting cavity 10A and connected to the gun housing 10. The threading plate 70 is provided with a connecting assembly slot 70A. At least one protrusion 313 is formed on the outer periphery of the cooling shell 31, and corresponding retaining holes are provided on the walls of the assembly slot 70A of the threading plate 70. The protrusion 313 protrudes from the housing body 311 of the cooling shell 31 along the Z-axis. The assembly slot 70A extends along the Y-axis. The retaining holes are provided on the walls of the assembly slot 70A along the Z-axis, corresponding to the protrusion 313. This enhances the stability of the cooling shell 31 within the assembly slot 70A. The number of retaining holes corresponds to the number of protrusions 313. In another assembly embodiment, in order to achieve assembly balance, at least two protrusions 313 spaced apart along the Y-axis direction or the X-axis direction are correspondingly provided on one side surface of the shell body 311, so that the corresponding protrusions 313 are snapped into the positioning holes to prevent the cooling shell 31 from slipping out of the assembly groove 70A, thereby improving the assembly stability of the cooling shell 31 in the assembly groove 70A.

[0080] like Figure 2 and Figure 3As shown, the threading plate 70 further includes a plate body 72 and a plurality of mounting pins 11 for mounting the plate body 72. The plurality of mounting pins 11 are used to mount the plate body 72 of the threading plate 70 on the gun housing 10. The plate body 72 is also provided with a connecting mounting groove 70A and a plurality of retaining grooves 70B. The plurality of retaining grooves 70B are arranged around the circumference of the mounting groove 70A. The two power terminals 51, the signal terminal 53, and the ground terminal 52 of the terminal assembly 50 are all retained within the retaining grooves 70B. The retaining grooves 70B are sized to fit the outer walls of the terminals.

[0081] Combined with reference Figure 10 Furthermore, the cooling shell 31 has an interference fit with the wall of the assembly slot 70A. Both the assembly slot 70A and the retaining slot 70B are formed on the plate 72. In another embodiment, a retaining portion 71 is provided on the wall of the assembly slot 70A. The retaining portion 71 is provided in the assembly slot 70A of the plate 72. The retaining portion 71 protrudes from the assembly slot 70A in the Z-axis direction and extends along the Y-axis direction. The cooling shell 31 has a corresponding recessed retaining slot 31C, and the retaining portion 71 is disposed within the retaining slot 31C.

[0082] It is understandable that the locking portion 71 can be provided at the top or bottom of the assembly slot 70A, or both the top and the bottom can be provided with the locking portion 71 to enhance the assembly locking stability between the cooling shell 31 and the assembly slot 70A.

[0083] Combined with reference Figures 4 to 6 As shown, in one embodiment of the present invention, one end of the cooling pipe 32 extending out of the cooling shell 31 is provided with two joints 321 extending in the same direction; the cooling assembly 30 also includes a connector 34 and two liquid cooling pipes 33, and one joint 321 is connected to one liquid cooling pipe 33; the two ends of the connector 34 are respectively provided with a first fixing portion 341 and a second fixing portion 342, the first fixing portion 341 is sleeved on the cooling pipe 32, and the second fixing portion 342 is sleeved on the liquid cooling pipe 33.

[0084] In this embodiment, the cooling tube 32 is a U-shaped tube. Two connectors 321 extending in the same direction are provided at one end of the U-shaped tube extending from the cooling shell 31. The cooling assembly 30 also includes a connector 34 and two liquid cooling tubes 33, one for liquid inlet and the other for liquid outlet. The two liquid cooling tubes 33 are each connected to an external circulation structure, which transports a lower-temperature cooling medium from one liquid cooling tube 33 to one side of the U-shaped tube wall for heat absorption. The higher-temperature cooling medium is then transported through the other side of the U-shaped tube wall to the other liquid cooling tube 33 for discharge. The circulating cooling medium enhances the cooling medium's heat absorption capacity, accelerating heat dissipation efficiency during charging.

[0085] The two liquid cooling tubes 33 are connected and docked via two joints 321, with the connection between the liquid cooling tubes 33 located between the first fixing portion 341 and the second fixing portion 342. The first fixing portion 341 is provided with two first fixing rings corresponding to the two tube walls of the cooling tube 32, with one first fixing ring being sleeved onto one tube wall. The second fixing portion 342 is provided with two second fixing rings corresponding to the two tube walls of the liquid cooling tube 33, with one second fixing ring being sleeved onto one liquid cooling tube 33. The first fixing portion 341 and the second fixing portion 342 reinforce and limit the connection between the liquid cooling tube 33 and the cooling tube 32, enhancing the stability of the connection between the liquid cooling tube 33 and the cooling tube 32.

[0086] Reference Figures 2 to 6 as well as Figure 11 As shown, further, the joint 321 of the liquid cooling pipe 33 and the cooling pipe 32 is connected by a clamp 36, and then reinforced by the first fixing part 341 and the second fixing part 342, so that the connection reliability of the liquid cooling pipe 33 and the cooling pipe 32 is high and disconnection is avoided.

[0087] In one embodiment of the present invention, a fixing groove 34A is provided between the first fixing portion 341 and the second fixing portion 342; the cooling assembly 30 also includes a leak detection part 35, which is provided in the fixing groove 34A, and the connection between the liquid cooling tube 33 and the cooling tube 32 is suspended above the leak detection part 35.

[0088] In this embodiment, a fixing groove 34A is provided between the first fixing portion 341 and the second fixing portion 342; the cooling assembly 30 also includes a leak detection part 35 provided in the fixing groove 34A, and the leak detection part 35 is located directly below the connection between the liquid cooling tube 33 and the cooling tube 32 along the Z-axis direction. The leak detection part 35 is used to detect whether there is leakage at the connection between the joint 321 of the liquid cooling tube 33 and the cooling tube 32, thereby improving the reliability of liquid cooling.

[0089] like Figures 12 to 14 As shown, the present invention also proposes a charging gun 200, which includes a gun body mechanism 20 and a gun head mechanism 100, Figure 14 and Figure 15 As shown, the specific structure of the gun head mechanism 100 refers to the above embodiments. Since the charging gun 200 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here. Among them, the gun head mechanism 100 is detachably connected to the gun body mechanism 20.

[0090] In this embodiment, the gun housing 10 of the gun head mechanism 100 and the outer shell 21 of the gun body mechanism 20 are detachably assembled, either by screws 24 or a combination of screws 24 and snaps. The gun body mechanism 20 has a threading hole at the end away from the gun head mechanism 100. The cable extends through the threading hole into the cavity 20A, where the power cable is crimped onto the adapter plate of the power terminal 51.

[0091] Furthermore, a retaining plate 12 is provided on the outer wall of the gun housing 10, and a hook is provided on the outer periphery of the outer shell 21. When the gun body 20 and the gun head 100 are assembled, the hook engages the retaining plate 12 to limit the position of the gun body 20 and the gun head 100 in the Y-axis direction. The charging gun 200 includes a sealing member 25, which is a sealing ring. The sealing ring is positioned between the gun housing 10 and the outer shell 21 to provide a waterproof seal and improve the tightness of the gun housing 10 and the outer shell 21.

[0092] like Figure 13 、 Figure 14 As shown, the gun body mechanism 20 further comprises a chamber 20A, which also houses an electric motor lock 23 and a locking rod 22. The housing 21 of the gun body mechanism 20 has a clearance hole corresponding to one end of the locking rod 22, and the gun head mechanism 100 has a locking hole through which the end of the locking rod 22 extends. The locking rod 22 is rotatably mounted within the chamber 20A. One end of the locking rod 22 extends through the clearance hole and can be pressed downward. The other end of the locking rod 22 extends from the gun body mechanism 20 and passes through the locking hole of the gun head mechanism 100. The locking rod 22 has an abutment corresponding to the electric motor lock 23. The abutment is used to activate and deactivate the electric motor lock 23, thereby locking the charging gun 200 to the external charging socket for charging and discharging operations.

[0093] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gun head mechanism, characterized in that: The gun head mechanism comprises: a gun housing, wherein the gun housing is provided with a mounting cavity; A cooling assembly, the cooling assembly is arranged in the installation cavity, the cooling assembly includes a cooling shell and a cooling pipe, the cooling shell is provided with a connected heat conduction cavity and an encapsulation cavity, one end of the cooling pipe is provided in the heat conductive glue of the heat conduction cavity, and the other end of the cooling pipe passes through the encapsulation medium of the encapsulation cavity and extends out of the cooling shell, the cooling shell includes a shell body and an encapsulation member, the shell body is provided with the heat conduction cavity, and the terminal assembly is located on the peripheral side of the shell body; the encapsulation member is protruding from one side of the shell body, and the encapsulation member is provided with the encapsulation cavity; and A terminal assembly, the terminal assembly being arranged in the installation cavity and arranged on a peripheral side of the cooling shell; In which, the arrangement direction of the packaging cavity and the heat conduction cavity is parallel to the extension direction of the terminal assembly, and the cavity wall of the packaging cavity is provided with a step, and the step divides the packaging cavity into a gluing cavity and a sealing cavity, and the gluing cavity is located between the heat conduction cavity and the sealing cavity; the cooling assembly also includes a cover plate, which is provided in the sealing cavity to seal the gluing cavity, and a through hole is provided on the cover plate for the cooling pipe to pass through.

2. The gun head mechanism according to claim 1, characterized in that: In a direction perpendicular to an extending direction of the terminal assembly, a cross-sectional area of ​​the packaging cavity is greater than or equal to a cross-sectional area of ​​the heat conduction cavity.

3. The gun head mechanism according to claim 1, characterized in that: The shell body is provided with a plurality of heat dissipation channels; The plurality of heat dissipation channels are spaced and distributed on both sides of the package; An extending direction of each of the heat dissipation channels is parallel to an extending direction of the terminal assembly.

4. The gun head mechanism according to claim 1, characterized in that: The gun head mechanism further comprises a threading plate arranged in the mounting cavity, the threading plate being provided with an assembly groove and a clamping groove communicating with the assembly groove; The cooling shell is detachably arranged in the assembly groove, and the terminal assembly is clamped in the clamping groove, so that the terminal assembly is attached to the outer peripheral wall of the cooling shell.

5. The gun head mechanism according to claim 4, characterized in that: The outer periphery of the cooling shell is provided with at least one protrusion; The groove wall of the assembly groove is provided with at least one locking hole, and one of the protrusions is locked in one of the locking holes.

6. The gun head mechanism according to any one of claims 1 to 5, characterized in that: One end of the cooling pipe extending out of the cooling shell is provided with two joints extending in the same direction; The cooling assembly further includes a connector and two liquid cooling pipes, wherein one connector is connected to the other liquid cooling pipe; The two ends of the connecting member are respectively provided with a first fixing portion and a second fixing portion, the first fixing portion is sleeved on the cooling pipe, and the second fixing portion is sleeved on the liquid cooling pipe.

7. The gun head mechanism according to claim 6, characterized in that: A fixing groove is provided between the first fixing portion and the second fixing portion; The cooling assembly further includes a leak detection component, which is arranged in the fixing groove, and the connection between the liquid cooling pipe and the cooling pipe is suspended above the leak detection component.

8. A charging gun, characterized in that: The charging gun includes: Receiver mechanism; and The gun head mechanism according to any one of claims 1 to 7, wherein the gun head mechanism is detachably connected to the gun body mechanism.

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