Terminal cable assembly and charging gun

Abstract

The utility model belongs to the technical field of charging guns, and discloses a terminal cable assembly and a charging gun, and the terminal cable assembly comprises a conductive terminal, a cooling cavity, a joint structure, and a liquid cooling cable. One end of the cooling cavity is hermetically sleeved on the conductive terminal, and the connecting end is positioned in the cooling cavity; the joint structure is hermetically connected with the other end of the cooling cavity; the liquid cooling cable comprises a cable conductor and a cable jacket which is arranged outside the cable conductor in a surrounding manner and forms a cable cooling channel with the cable conductor, one end of the cable conductor penetrates through the joint structure and is electrically connected with the connecting end, the cable jacket is in sealed connection with the joint structure, and the cable cooling channel is communicated with the interior of the cooling cavity through the joint structure; and cooling media are arranged in the cable cooling channel and the cooling cavity. The terminal cable assembly and the charging gun provided by the utility model can reduce the risk that the temperature is too high during high-charging-power charging, shorten the charging time, and ensure the charging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, and in particular to a terminal cable assembly and a charging gun. Background Technology

[0002] New energy electric vehicles need to be charged via a charging gun. The charging gun has conductive terminals and cables electrically connected to the conductive terminals. The conductive terminals are inserted into the slots of the charging port of the new energy electric vehicle to start charging. In order to improve charging efficiency, the power of the charging gun is usually relatively large. The cables with large overload current generate a lot of heat. In order to avoid excessive temperature rise of the cables, liquid cooling is usually used to cool the cables.

[0003] In existing technology, the cooling of the conductive terminal and the cooling of the cable are two independent cooling systems. A plug is provided at the end of the cable facing the conductive terminal to prevent leakage of coolant from inside the cable. The conductive terminal is cooled by cooling pipes located on its outer periphery. The cable core is electrically connected to a conductor, which extends from the plug and connects to the conductive terminal, thus establishing the electrical connection between the cable and the conductive terminal. Because a large amount of heat is generated at the contact point between the conductor and the conductive terminal, and this part lacks a cooling structure, the temperature at this point becomes excessively high, affecting the charging efficiency of the charging gun and prolonging the charging time. Utility Model Content

[0004] The purpose of this invention is to provide a terminal cable assembly and a charging gun to solve the technical problems of low charging efficiency and long charging time in the prior art.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] Terminal cable assembly, including:

[0007] A conductive terminal having a connection end;

[0008] A cooling cavity, one end of which is sealed and sleeved onto the conductive terminal, and the connection end is located inside the cooling cavity;

[0009] A connector structure is sealed to the other end of the cooling cavity;

[0010] The liquid-cooled cable includes a cable conductor and a cable jacket surrounding the cable conductor and forming a cable cooling channel between the cable conductor and the cable conductor. One end of the cable conductor passes through the connector structure and is electrically connected to the connection end. The cable jacket is sealed to the connector structure, and the cable cooling channel communicates with the interior of the cooling cavity through the connector structure. Both the cable cooling channel and the cooling cavity contain a cooling medium.

[0011] In one embodiment, the cooling cavity is sealed to one end of the connector structure, and the cable jacket is sealed to the other end of the connector structure.

[0012] In one embodiment, the connector structure includes a large-diameter section and a small-diameter section, the cross-sectional area of ​​the large-diameter section being larger than the cross-sectional area of ​​the small-diameter section; the cooling cavity is sealed and fitted onto the large-diameter section, and the cable outer sleeve is sealed and fitted onto the small-diameter section.

[0013] In one embodiment, the terminal cable assembly further includes a clamp that is fitted onto the cable sheath and cooperates with the small-diameter section to clamp the cable sheath.

[0014] In one embodiment, the circumferential outer wall of the small diameter section is provided with a barbed structure, and the barbed structure is interference-fitted with the cable sheath.

[0015] In one embodiment, the terminal cable assembly further includes a locking nut, and the outer wall of the large-diameter section located outside the cooling cavity is provided with a locking thread. The locking nut is sleeved on the locking thread and abuts against the end face of the cooling cavity.

[0016] In one embodiment, the circumferential outer wall of the joint structure is provided with a first limiting structure, and one end of the cooling cavity is provided with a second limiting structure. The first limiting structure is located inside the cooling cavity and abuts against the second limiting structure in the axial direction of the cooling cavity.

[0017] In one embodiment, the conductive terminal is provided with a fastening screw hole, the cooling cavity is provided with a through hole, and the fastener passes through the through hole and is screwed into the fastening screw hole to connect the conductive terminal and the cooling cavity.

[0018] In one embodiment, a sealing ring is provided between the conductive terminal and the cooling cavity; and / or, a sealing ring is provided between the connector structure and the cooling cavity.

[0019] The charging gun includes the terminal cable assembly as described above.

[0020] The terminal cable assembly and charging gun provided by this utility model have at least the following beneficial effects:

[0021] The cooling cavity is sealed to the conductive terminals and connector structure to form a sealed cooling space. The connection between the conductive terminal and the cable conductor is located in the cooling cavity. On the one hand, there are fewer connection points when the liquid-cooled cable is electrically connected to the conductive terminal. On the other hand, the cooling medium in the cooling cavity can directly contact and cool the connection point, the cable conductor, and the connection point between them. This improves the cooling efficiency of the terminal cable assembly, avoids overheating, reduces the impact of temperature on charging power during high-power charging, improves the charging efficiency of the charging gun using the terminal cable assembly, and shortens the charging time.

[0022] Furthermore, the liquid-cooled cable is connected to the cooling cavity via a connector structure. This not only improves the connection strength between the cooling cavity and the liquid-cooled cable, but also allows for a larger radial dimension of the cooling cavity, eliminating the need for a large diameter to accommodate the liquid-cooled cable. This enables the cooling cavity to hold more cooling medium, further enhancing the cooling effect on the connection end and one end of the cable conductor. Additionally, the connector structure improves the sealing of the connection between the liquid-cooled cable and the cooling cavity, reducing the risk of cooling medium leakage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a first structural schematic diagram of the terminal cable assembly provided in this embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the second structure of the terminal cable assembly provided in this embodiment of the present invention;

[0026] Figure 3 This is an exploded view of the terminal cable assembly provided in this embodiment of the utility model;

[0027] Figure 4 This is a cross-sectional view of the terminal cable assembly provided in this embodiment of the present invention;

[0028] Figure 5 This is a utility model Figure 4 The enlarged schematic diagram at point A is shown below;

[0029] Figure 6 This is a utility model Figure 4 The enlarged schematic diagram at point B is shown below;

[0030] Figure 7 This is a schematic diagram of the connector structure provided in an embodiment of the present utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the cooling cavity provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the charging gun provided in this embodiment of the utility model;

[0033] Figure 10 This is a partial structural schematic diagram of the charging gun provided in an embodiment of the present utility model.

[0034] In the picture:

[0035] 100. Conductive terminal; 110. Connecting end; 120. Plug-in end; 130. Fastening screw hole; 200. Cooling cavity; 210. Second limiting structure; 220. Through hole; 230. Inlet / outlet; 300. Connector structure; 310. Large diameter section; 311. Locking thread; 320. Small diameter section; 321. Barb structure; 330. First limiting structure; 400. Liquid-cooled cable; 410. Cable conductor; 411. Welding part; 420. Cable jacket; 430. Cable cooling channel; 500. Hoop; 600. Locking nut; 700. Fastener; 800. Sealing ring; 10. Terminal cable assembly; 20. Head structure; 30. Tail structure; 41. Main pipeline; 42. Branch pipeline; 50. Collecting cavity; 60. T-junction. Detailed Implementation

[0036] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0037] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0041] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They 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" and "second" are merely used for distinction in description and have no special meaning.

[0042] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] This embodiment provides a terminal cable assembly for use in a charging gun, which can reduce the risk of overheating during high-power charging, shorten charging time, and ensure charging efficiency.

[0045] For example, such as Figures 1 to 10 As shown, the terminal cable assembly 10 includes a conductive terminal 100, a cooling cavity 200, a connector structure 300, and a liquid-cooled cable 400. The conductive terminal 100 has a connecting end 110 for connecting the liquid-cooled cable 400. The conductive terminal 100 also has a plug-in end 120 for inserting into a charging socket. The cooling cavity 200 is a hollow structure, and one end of the cooling cavity 200 is sealed and fitted onto the conductive terminal 100, such as... Figure 4 As shown, the connecting end 110 is located within the cooling cavity 200, and the cooling cavity 200 is not fitted over the plug-in end 120. The cooling cavity 200 contains a cooling medium used to cool the connecting end 110, preventing it from overheating. The connector structure 300 is sealed to the other end of the cooling cavity 200 for connecting the cooling cavity 200 and the liquid-cooled cable 400.

[0046] like Figure 3 As shown, the liquid-cooled cable 400 includes a cable conductor 410 and a cable jacket 420. The cable jacket 420 surrounds the cable conductor 410 and forms a cable cooling channel 430 between them. The cable cooling channel 430 contains a cooling medium used to cool the cable conductor 410 and prevent it from overheating. One end of the cable conductor 410 passes through the connector structure 300 and extends into the cooling cavity 200. Furthermore, one end of the cable conductor 410 is electrically connected to the connection end 110. Therefore, in this embodiment, the cable conductor 410 is directly connected to the connection end 110 of the conductive terminal 100, rather than through other intermediate structures. Also, one end of the cable conductor 410 is located in the cooling cavity 200, so that the connection point between the cable conductor 410 and the connection end 110 is also located in the cooling cavity 200, allowing it to be cooled by the cooling medium within the cooling cavity 200.

[0047] In some optional embodiments, one end of the cable conductor 410 is a welded portion 411, which is electrically connected to the connecting end 110 by ultrasonic welding to achieve a high connection strength. Furthermore, both the welded portion 411 and the connecting end 110 are plate-shaped, and the large surface of the welded portion 411 is welded to the large surface of the connecting end 110 to achieve a large connection area and high connection strength.

[0048] In this embodiment, the cable jacket 420 is sealed to the connector structure 300, and the cable cooling channel 430 communicates with the interior of the cooling cavity 200 through the connector structure 300. In one embodiment, the connector structure 300 is a hollow structure, with the cable cooling channel 430 communicating with the interior of the connector structure 300, and the cooling cavity 200 also communicating with the interior of the connector structure 300. In another embodiment, the connector structure 300 is provided with a channel (not shown in the figure) extending through both ends, with the cable cooling channel 430 communicating with one end of the channel, and the interior of the cooling cavity 200 communicating with the other end of the channel.

[0049] The terminal cable assembly 10 provided in this embodiment has a cooling cavity 200 that is sealed to the conductive terminal 100 and the connector structure 300 to form a sealed cooling space. The connection end 110 of the conductive terminal 100 is connected to the cable conductor 410, and the connection position is located in the cooling cavity 200. On the one hand, there are fewer connection positions when the liquid-cooled cable 400 is electrically connected to the conductive terminal 100. On the other hand, the cooling medium in the cooling cavity 200 can directly contact and cool the connection end 110, the cable conductor 410, and the connection position between the two, thereby improving the cooling efficiency of the terminal cable assembly 10, avoiding the situation of excessive temperature, and reducing the impact of temperature on the charging power during high-power charging. This improves the charging efficiency of the charging gun using the terminal cable assembly 10 and shortens the charging time.

[0050] Furthermore, the liquid-cooled cable 400 is connected to the cooling cavity 200 via a connector structure 300. This improves the connection strength between the cooling cavity 200 and the liquid-cooled cable 400. Additionally, the connector structure 300 allows for a larger radial dimension of the cooling cavity 200, eliminating the need to accommodate the diameter of the liquid-cooled cable 400. This allows for a larger volume of cooling medium within the cooling cavity 200, further enhancing the cooling effect on the connection end 110 and one end of the cable conductor 410. Moreover, the connector structure 300 also improves the sealing of the connection between the liquid-cooled cable 400 and the cooling cavity 200, reducing the risk of cooling medium leakage.

[0051] In some optional embodiments, the cooling cavity 200 is made of metal. When the cooling cavity 200 is made of metal, it has high structural strength and pressure resistance, as well as high sealing performance, reducing the risk of cooling medium leakage. Of course, it is understood that the cooling cavity 200 can also be made of non-metallic materials; this embodiment does not limit this.

[0052] In this embodiment, the connector structure 300 can be made of metal, giving it high structural strength and pressure resistance, as well as strong sealing performance, thus reducing the risk of cooling medium leakage. Of course, it is understood that the connector structure 300 can also be made of non-metallic materials; this embodiment does not limit this.

[0053] To further improve the sealing connection between the cooling cavity 200 and the liquid-cooled cable 400, in one embodiment, the cooling cavity 200 is sealed and fitted onto one end of the connector structure 300, and the cable sheath 420 is sealed and fitted onto the other end of the connector structure 300. This allows for a large contact area between the cooling cavity 200 and the connector structure 300, thereby improving the sealing connection between them. Similarly, the cable sheath 420 can also have a large contact area with the connector structure 300, further enhancing the sealing connection between them.

[0054] It is understood that one end of the connector structure 300 may be sealed and fitted into the cooling cavity 200, and / or the other end of the connector structure 300 may be sealed and fitted into the cable jacket 420. This embodiment does not limit this.

[0055] To allow for a larger cross-sectional dimension of the cooling cavity 200, while the cross-sectional dimension of the liquid cooling cable 400 does not need to be very large, optionally, such as Figure 3 As shown, the connector structure 300 includes a large-diameter section 310 and a small-diameter section 320. The cross-sectional area of ​​the large-diameter section 310 is larger than that of the small-diameter section 320. For example, when both the large-diameter section 310 and the small-diameter section 320 are cylindrical, the diameter of the large-diameter section 310 is larger than that of the small-diameter section 320. The cooling cavity 200 is sealed and fitted onto the large-diameter section 310, and the cable sheath 420 is sealed and fitted onto the small-diameter section 320. By setting the large-diameter section 310 and the small-diameter section 320 with different radial dimensions, while ensuring the sealing effect between the connector structure 300, the cooling cavity 200, and the cable sheath 420, the radial dimension of the cooling cavity 200 is not affected by the cable sheath 420. This allows the cooling cavity 200 to be set larger, resulting in a larger internal space that can accommodate more cooling medium, further improving the cooling efficiency and effect at the connection point between the connector end 110 and the cable conductor 410.

[0056] The pressure of the cooling medium within the cooling cavity 200 and the cable cooling channel 430 is typically high. Furthermore, as the cooling medium flows from the large-diameter section 310 to the small-diameter section 320 and the cable cooling channel 430, the reduced flow area leads to greater pressure at the connection between the cable sheath 420 and the small-diameter section 320. To prevent connection failure between the cable sheath 420 and the small-diameter section 320, in some optional embodiments, such as... Figure 2 As shown, the terminal cable assembly 10 also includes a clamp 500. The clamp 500 is fitted onto the cable sheath 420 and cooperates with the small-diameter section 320 to clamp the cable sheath 420. By providing the clamp 500, the cable sheath 420 can be tightly clamped onto the small-diameter section 320, improving the connection strength between the cable sheath 420 and the small-diameter section 320, thereby improving the overall pressure resistance of the terminal cable assembly 10, preventing the cable sheath 420 from detaching from the small-diameter section 320, and exhibiting high reliability.

[0057] Further optional, such as Figure 6 or Figure 7 As shown, the outer circumferential wall of the small-diameter section 320 is provided with a barb structure 321. The barb structure 321 is interference-fitted with the cable jacket 420, that is, the barb structure 321 is inserted into the inner wall of the cable jacket 420. By setting the barb structure 321, in conjunction with the clamping of the clamp 500, the connection strength between the small-diameter section 320 and the cable jacket 420 is further improved, and the risk of separation between the small-diameter section 320 and the cable jacket 420 is further reduced.

[0058] Optionally, such as Figure 7 As shown, multiple barb structures 321 are provided, and the multiple barb structures 321 are arranged sequentially along the axial direction of the small diameter section 320 to further improve the connection strength between the small diameter section 320 and the cable jacket 420.

[0059] It should be noted that the material of the cable jacket 420 in this embodiment can be metal, non-metal, or a combination of metal and non-metal. This embodiment does not limit this.

[0060] To prevent relative movement between the cooling cavity 200 and the large-diameter section 310 of the joint structure 300, in one embodiment, such as Figures 3 to 5 As shown, the terminal cable assembly 10 also includes a locking nut 600. The outer wall of the large-diameter section 310, located outside the cooling cavity 200, is provided with a locking thread 311. The locking nut 600 is fitted onto the locking thread 311 and abuts against the end face of the cooling cavity 200. Thus, the locking nut 600 can limit the movement of the cooling cavity 200 relative to the large-diameter section 310, preventing movement and thereby improving the connection strength between the cooling cavity 200 and the large-diameter section 310, thus ensuring the sealing of the formed cooling space.

[0061] In some alternative embodiments, the locking nut 600 can also be directly welded onto the large diameter section 310, but this embodiment does not limit this.

[0062] To improve the connection strength between the conductive terminal 100 and the cooling cavity 200, optionally, as follows: Figure 3 As shown, the conductive terminal 100 is provided with a fastening screw hole 130, such as Figure 8 As shown, the cooling cavity 200 is provided with a through hole 220, such as Figure 4 As shown, the terminal cable assembly 10 also includes a fastener 700, which passes through the through hole 220 and is screwed into the fastening screw hole 130 to connect the conductive terminal 100 and the cooling cavity 200. This ensures that the cooling cavity 200 and the conductive terminal 100 will not have relative displacement in the axial direction of the cooling cavity 200, thereby improving the connection strength between the cooling cavity 200 and the conductive terminal 100 and ensuring the sealing of the formed cooling space.

[0063] Optionally, one or more fasteners 700 may be provided. When multiple fasteners 700 are provided, multiple through holes 220 and fastening screw holes 130 are provided one-to-one, which can further improve the strength of the connection between the cooling cavity 200 and the conductive terminal 100.

[0064] For example, the fastener 700 in this embodiment can be a bolt with the head of the bolt located in the through hole 220 so as not to interfere with other components, avoid the fastener 700 taking up too much space, and facilitate the miniaturization of the terminal cable assembly 10.

[0065] It should be noted that one end of the cooling cavity 200 is connected to the conductive terminal 100 via a fastener 700, and the other end is locked by a locking nut 600. The connection end 110 of the conductive terminal 100 is connected to the welding part 411 of the cable conductor 410, so that the cooling cavity 200 will not move relative to the conductive terminal 100 and the liquid-cooled cable 400. This improves the integrity of the structure formed by the cooling cavity 200, the conductive terminal 100, the connector structure 300, and the liquid-cooled cable 400, thereby reducing the risk of cooling medium leakage.

[0066] In this embodiment, the alignment of the through hole 220 and the fastening screw hole 130 facilitates the alignment and assembly of the conductive terminal 100 and the cooling cavity 200. To further facilitate the alignment and assembly of the connector structure 300 and the cooling cavity 200, in one possible implementation, such as... Figure 5 , Figure 7 and Figure 8 As shown, the circumferential outer wall of the joint structure 300 is provided with a first limiting structure 330, and one end of the cooling cavity 200 is provided with a second limiting structure 210. The first limiting structure 330 is located inside the cooling cavity 200 and abuts against the second limiting structure 210 in the axial direction of the cooling cavity 200. In this way, the cooling cavity 200 and the joint structure 300 can be positioned and installed, ensuring that the length of the joint structure 300 inside the cooling cavity 200 meets the requirements, thereby guaranteeing the sealing performance after the two are connected, and facilitating the installation of a sealing structure between them.

[0067] For example, the first limiting structure 330 is a protrusion provided on the outer wall of the large-diameter section 310 of the connector structure 300, and the second limiting structure 210 is a protrusion provided on the inner wall of one end of the cooling cavity 200. In one embodiment, the second limiting structure 210 is annular, surrounding the cooling cavity 200 circumferentially. In another embodiment, multiple second limiting structures 210 are provided, and the multiple second limiting structures 210 are spaced apart circumferentially along the cooling cavity 200.

[0068] Optionally, in the axial direction of the connector structure 300, the first limiting structure 330 and the locking thread 311 are spaced apart, and the gap between them is just enough to accommodate the second limiting structure 210. That is, the second limiting structure 210 can be engaged between the first limiting structure 330 and the locking thread 311 to further improve the reliability and stability of the connection between the cooling cavity 200 and the connector structure 300.

[0069] To improve the sealing between the conductive terminal 100 and the cooling cavity 200, in this embodiment, as follows: Figure 4 As shown, a sealing ring 800 is provided between the conductive terminal 100 and the cooling cavity 200. Specifically, the sealing ring 800 is sleeved on the conductive terminal 100 and seals against both the conductive terminal 100 and the cooling cavity 200, reducing the risk of leakage of the cooling medium in the cooling cavity 200. Optionally, one or more sealing rings 800 may be provided between the conductive terminal 100 and the cooling cavity 200; this embodiment does not limit this. In one embodiment, the circumferential outer wall of the conductive terminal 100 may have a groove (not shown in the figure) to accommodate the sealing ring 800, preventing the sealing ring 800 from moving in the axial direction of the conductive terminal 100 and improving the positioning effect of the sealing ring 800.

[0070] Optionally, to improve the sealing between the joint structure 300 and the cooling cavity 200, such as Figure 4 As shown, a sealing ring 800 is provided between the joint structure 300 and the cooling cavity 200. Specifically, the sealing ring 800 is sleeved on the joint structure 300 and seals against both the joint structure 300 and the cooling cavity 200, reducing the risk of leakage of the cooling medium in the cooling cavity 200. Optionally, one or more sealing rings 800 may be provided between the joint structure 300 and the cooling cavity 200; this embodiment does not limit this. In one embodiment, the circumferential outer wall of the joint structure 300 may have a groove (not shown in the figure) to accommodate the sealing ring 800, preventing the sealing ring 800 from moving in the axial direction of the joint structure 300 and improving the positioning effect of the sealing ring 800.

[0071] Because the liquid-cooled cable 400 has a cable cooling channel 430 inside, that is, the liquid-cooled cable 400 is designed as a hollow structure, it will inevitably affect the structural strength of the liquid-cooled cable 400. In this embodiment, in order to improve the structural strength of the liquid-cooled cable 400, the terminal cable assembly 10 also includes a support structure (not shown in the figure). The support structure is located inside the cable jacket 420 and is used to support the cable jacket 420 to improve the compressive strength and structural strength of the liquid-cooled cable 400. For example, in order to ensure the support effect of the support structure, the circumferential outer wall of the support structure abuts against the circumferential inner wall of the cable jacket 420 to prevent the support structure from occupying too much space of the cooling channel.

[0072] In order to ensure that the support structure does not affect the flow of the cooling medium, the support structure in this embodiment is provided with a support through hole 220 that connects to the cable cooling channel 430. Specifically, the support through hole 220 is provided through the support structure in the axial direction of the liquid-cooled cable 400, so that the cooling medium outside one end of the support structure can flow to the other end through the support through hole 220 without blocking the cable cooling channel 430.

[0073] It should be noted that by setting a support structure with a support through hole 220, the cable jacket 420 of the liquid-cooled cable 400 is supported, thereby allowing for a larger cross-sectional size of the formed cooling channel. Furthermore, with the support structure, the space for the cooling medium to flow is not reduced due to bending or compression, ensuring the flow rate of the cooling medium and enabling it to carry more heat. For example, the end of the cable cooling channel 430 facing away from the cooling cavity 200 can be connected to a cooling source. In this case, the cooling source, cooling cavity 200, and cable cooling channel 430 can form a cooling circuit. When the flow rate and velocity of the cooling medium in the cable cooling channel 430 increase, the flow rate and velocity within the cooling cavity 200 also increase, thereby improving the cooling effect on the conductive terminal 100 and achieving efficient charging of the charging gun of the terminal cable assembly 10.

[0074] In some optional embodiments, the support structure can be cylindrical, which provides good support and is easy to manufacture. In other optional embodiments, the support structure can also be helical, which also provides good support.

[0075] For example, the support structure can be made of metal to ensure effective support for the cable sheath 420. It is understood that the support structure can also be made of non-metallic materials, but this embodiment does not limit this.

[0076] This embodiment also provides a charging gun, including the terminal cable assembly 10 as described above. The terminal cable assembly 10 of the charging gun provided in this embodiment can withstand a large maximum overcurrent, thereby achieving high charging efficiency.

[0077] For example, Figure 9 and Figure 10 A charging gun provided in this embodiment includes a head structure 20 and a tail structure 30. Both the head structure 20 and the tail structure 30 include at least one terminal cable assembly 10. The liquid-cooled cable 400 of the terminal cable assembly 10 of the head structure 20 is electrically connected to the liquid-cooled cable 400 of the terminal cable assembly 10 of the tail structure 30, and the cable cooling channels 430 of the two connected liquid-cooled cables 400 are connected to form a cooling circuit.

[0078] For example, such as Figure 10 As shown, the head structure 20 includes two terminal cable assemblies 10, and the tail structure 30 also includes two terminal cable assemblies 10.

[0079] In one embodiment, the charging gun further includes a collecting cavity 50, which is disposed between the head structure 20 and the tail structure 30, for example, it can be sleeved on the outside of the liquid-cooled cable 400. The inlet and outlet 230 of each terminal cable assembly 10 are connected to the collecting cavity 50 through a pipe (not shown in the figure), so that the collecting cavity 50, the pipe, the cooling cavity 200 and the cooling channel form a cooling circuit.

[0080] For example, such as Figure 9 and Figure 10 As shown, each end of the collecting cavity 50 is connected to a main pipeline 41. The inlet and outlet 230 of the two terminal cable assemblies 10 of the head structure 20 is connected to one of the main pipelines 41 via a tee 60 and two branch pipelines 42. The inlet and outlet 230 of the two terminal cable assemblies 10 of the tail structure 30 is also connected to the other main pipeline 41 via a tee 60 and two branch pipelines 42.

[0081] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A terminal cable assembly, characterized in that, include: A conductive terminal (100) having a connection end (110); A cooling cavity (200) is provided, one end of which is sealed and sleeved to the conductive terminal (100), and the connecting end (110) is located inside the cooling cavity (200). A connector structure (300) is sealed to the other end of the cooling cavity (200); The liquid-cooled cable (400) includes a cable conductor (410) and a cable jacket (420) surrounding the cable conductor (410) and forming a cable cooling channel (430) between the cable conductor (410). One end of the cable conductor (410) passes through the connector structure (300) and is electrically connected to the connection end (110). The cable jacket (420) is sealed to the connector structure (300). The cable cooling channel (430) communicates with the interior of the cooling cavity (200) through the connector structure (300). Both the cable cooling channel (430) and the cooling cavity (200) contain a cooling medium.

2. The terminal cable assembly according to claim 1, characterized in that, The cooling cavity (200) is sealed and fitted onto one end of the connector structure (300), and the cable jacket (420) is sealed and fitted onto the other end of the connector structure (300).

3. The terminal cable assembly according to claim 1 or 2, characterized in that, The connector structure (300) includes a large-diameter section (310) and a small-diameter section (320), wherein the cross-sectional area of ​​the large-diameter section (310) is larger than the cross-sectional area of ​​the small-diameter section (320); the cooling cavity (200) is sealed and fitted onto the large-diameter section (310), and the cable jacket (420) is sealed and fitted onto the small-diameter section (320).

4. The terminal cable assembly according to claim 3, characterized in that, The terminal cable assembly also includes a clamp (500), which is fitted onto the cable jacket (420) and cooperates with the small diameter section (320) to clamp the cable jacket (420).

5. The terminal cable assembly according to claim 4, characterized in that, The outer circumferential wall of the small diameter section (320) is provided with a barb structure (321), and the barb structure (321) is interference-fitted with the cable jacket (420).

6. The terminal cable assembly according to claim 3, characterized in that, The terminal cable assembly also includes a locking nut (600), and the outer wall of the large diameter section (310) located outside the cooling cavity (200) is provided with a locking thread (311). The locking nut (600) is sleeved on the locking thread (311) and abuts against the end face of the cooling cavity (200).

7. The terminal cable assembly according to claim 1 or 2, characterized in that, The circumferential outer wall of the joint structure (300) is provided with a first limiting structure (330), and one end of the cooling cavity (200) is provided with a second limiting structure (210). The first limiting structure (330) is located inside the cooling cavity (200) and abuts against the second limiting structure (210) in the axial direction of the cooling cavity (200).

8. The terminal cable assembly according to claim 1 or 2, characterized in that, The conductive terminal (100) is provided with a fastening screw hole (130), the cooling cavity (200) is provided with a through hole (220), and the fastener (700) passes through the through hole (220) and is screwed into the fastening screw hole (130) to connect the conductive terminal (100) and the cooling cavity (200).

9. The terminal cable assembly according to claim 1 or 2, characterized in that, A sealing ring (800) is provided between the conductive terminal (100) and the cooling cavity (200); and / or, a sealing ring (800) is provided between the connector structure (300) and the cooling cavity (200).

10. A charging gun, characterized in that, Includes the terminal cable assembly as described in any one of claims 1-9.

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