Charging socket

Abstract

This utility model discloses a charging socket, relating to the field of charging equipment technology. The charging socket includes a socket housing, at least two DC terminals, and a liquid cooling assembly. The two DC terminals are respectively connected to the socket housing. The liquid cooling assembly includes a terminal connecting block, a coolant input component, and a cooling block. The terminal connecting block connects the two DC terminals, which are connected to the coolant input component. The terminal connecting block and the two DC terminals form a mounting groove, and the cooling block is installed in the mounting groove. The bottom or top wall of the cooling block has two connection ports, which are respectively connected to the coolant input component. The technical solution provided by this utility model achieves active cooling, meeting the high-efficiency heat dissipation requirements of the charging socket during high-power transmission.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment technology, and in particular to a charging socket. Background Technology

[0002] With the booming development of the electric vehicle market, the demand for efficient and fast high-power charging is becoming increasingly urgent. However, existing charging socket technologies have revealed a series of problems that urgently need to be solved when dealing with high-power charging.

[0003] Existing charging sockets have significant shortcomings in their cooling methods. Traditional passive cooling methods, such as natural heat dissipation or air convection, are no longer sufficient to meet the demands of high-power transmission. As the charging current increases, the heat generated by the charging socket also increases, causing the temperature to rise rapidly. This overheating can not only damage the electronic components of the charging device but may also lead to safety accidents, such as burnout or even fire.

[0004] However, existing charging sockets lack effective heat dissipation mechanisms in their structural design. Most of the heat accumulates inside the socket and cannot be dissipated in time, which not only affects the performance of the charging socket but also shortens its lifespan. Furthermore, existing designs cannot achieve a continuous and stable charging process in high-power charging scenarios, limiting the charging efficiency of electric vehicles and the user experience. Utility Model Content

[0005] The main purpose of this invention is to propose a charging socket that aims to achieve active cooling and meet the high-efficiency heat dissipation requirements of the charging socket during high-power transmission.

[0006] To achieve the above objectives, this utility model proposes a charging socket, which includes:

[0007] Socket housing;

[0008] At least two DC terminals, each of which is connected to the socket housing; and

[0009] A liquid cooling assembly includes a terminal connecting block, a coolant input component, and a cooling block. The terminal connecting block is used to connect two DC terminals, which are connected to the coolant input component. The terminal connecting block and the two DC terminals form a mounting groove, and the cooling block is installed in the mounting groove. The bottom or top wall of the cooling block is provided with two connection ports, which are respectively connected to the coolant input component.

[0010] In one embodiment, the cooling block is further provided with an internal flow path, which is connected to two of the connection ports; the two connection ports are connected to the coolant input component, so that the coolant input component is connected to the internal flow path.

[0011] In one embodiment, each of the DC terminals is provided with a recess and a mounting hole communicating with the recess, the extension direction of the recess is perpendicular to the extension direction of the mounting hole; both ends of the cooling block are respectively inserted into the two recesses, and each of the connection ports is coaxially arranged with a mounting hole.

[0012] The coolant input component is inserted into the connection port through the mounting hole at one end near the DC terminal, so that the coolant input component is in communication with the cooling block.

[0013] In one embodiment, the coolant inlet includes:

[0014] Two coolant inlets, each coolant inlet having one end inserted through a mounting hole, such that one end of the coolant inlet communicates with the connection port; and

[0015] Two liquid cooling pipes, each of which is connected to the end of a coolant inlet away from the DC terminal and is in communication with the coolant inlet.

[0016] In one embodiment, the liquid cooling assembly further includes two spring tubes, each spring tube being sleeved outside one of the liquid cooling tubes.

[0017] In one embodiment, each of the coolant inlets includes an inlet pipe section, an inlet body, and an outlet pipe section connected in sequence, wherein the inlet pipe section and the outlet pipe section are arranged perpendicularly; the inlet pipe section is inserted into the mounting hole and communicates with the connection port; the outlet pipe section is connected to a liquid cooling pipe.

[0018] In one embodiment, the circumferential outer wall of the liquid inlet pipe section is provided with a plurality of first flanges, the plurality of first flanges being arranged at intervals along the axial direction of the liquid inlet pipe section and abutting against the inner wall of the connection port.

[0019] And / or, the circumferential outer wall of the liquid outlet pipe section is provided with a plurality of second flanges, the plurality of second flanges being arranged at intervals along the axial direction of the liquid outlet pipe section and abutting against the inner wall of the liquid cooling pipe.

[0020] In one embodiment, the charging socket is further provided with a tail cap, and the inlet body is provided with a limiting plate, which abuts against and is securely installed with the outer wall of the tail cap.

[0021] In one embodiment, the charging socket further includes a PCB circuit board and a temperature sensor. The PCB circuit board is mounted on the socket housing, and the temperature sensor is integrated on the PCB circuit board and electrically connected to the PCB circuit board and external circuitry for monitoring the real-time temperature of the PCB circuit board. The two DC terminals pass through the PCB circuit board and are connected to the socket housing, and are electrically connected to the PCB circuit board.

[0022] In one embodiment, the charging socket further includes an insulating elastic protective sleeve fitted over the temperature sensor.

[0023] The charging socket of this utility model includes a socket housing, at least two DC terminals, and a liquid cooling assembly. The two DC terminals are respectively connected to the socket housing. The liquid cooling assembly includes a terminal connecting block, a coolant input component, and a cooling block. The terminal connecting block connects the two DC terminals, which are connected to the coolant input component. The terminal connecting block and the two DC terminals form a mounting groove, and the cooling block is installed in the mounting groove. The bottom or top wall of the cooling block has two connection ports, which are respectively connected to the coolant input component. Thus, active cooling is achieved by using the liquid cooling assembly. The terminal connecting block in the liquid cooling assembly connects the two DC terminals, and the two DC terminals are connected to the coolant input component, allowing coolant to be effectively introduced and heat exchanged near the terminals. The cooling block installed in the mounting groove formed by the terminal connecting block and the two DC terminals further enhances the heat dissipation effect, meeting the high-efficiency heat dissipation requirements of the charging socket during high-power transmission. Two connection ports on the bottom or top wall of the cooling block are connected to the coolant inlet, ensuring the flow of coolant and allowing it to come into full contact with the heat-generating components for heat absorption and cooling, thereby effectively reducing the temperature of critical components such as the DC terminals. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the charging socket of this utility model;

[0026] Figure 2 This is a top view of an embodiment of the charging socket of this utility model;

[0027] Figure 3 for Figure 2 Schematic diagram of AA section;

[0028] Figure 4 This is a left view of an embodiment of the charging socket of this utility model;

[0029] Figure 5 for Figure 4 Schematic diagram of the BB cross section;

[0030] Figure 6 This is an exploded view of the structure of an embodiment of the charging socket of this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of a cooling block according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of an embodiment of the coolant inlet of this utility model.

[0033] Explanation of icon numbers:

[0034] 10. Socket housing; 20. DC terminal; 20a. Recessed groove; 20b. Mounting hole; 30. Liquid cooling assembly; 31. Terminal connection block; 32. Coolant input component; 321. Coolant inlet; 321a. Inlet pipe section; 321b. Inlet body; 321c. Outlet pipe section; 322. Liquid cooling pipe; 321d. Limiting plate; 33. Cooling block; 33a. Connection port; 33b. Internal flow path; 40. PCB circuit board; 50. Temperature sensor.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] In current technology, as the charging power of electric vehicles continues to increase, traditional charging sockets that rely on natural heat dissipation or air convection are no longer able to effectively cope with the heat buildup generated by high-power charging. When the charging current exceeds a certain threshold, the internal temperature of the socket rises rapidly, causing overheating and damage to electronic components, and even posing a fire hazard. For example, during use, the internal temperature of a certain brand of DC fast charging station can reach over 120 degrees Celsius when continuously transmitting high current, far exceeding the tolerance limits of electronic components.

[0040] To address these issues, researchers first observed that heat was primarily concentrated at the metal connections along the current transmission path. Traditional heat sinks only cover the surface and cannot penetrate deep into the conductive components for heat exchange. Analysis of the heat conduction path revealed that directly introducing the cooling medium into the core heat-generating area improves heat dissipation efficiency. Further research showed that, while maintaining electrical connection stability, constructing a closed liquid cooling channel enables directional heat removal.

[0041] Therefore, this utility model proposes a charging socket.

[0042] Please see Figures 1 to 5 In one embodiment of this utility model, the charging socket includes a socket housing 10, at least two DC terminals 20, and a liquid cooling assembly 30; the two DC terminals 20 are respectively connected to the socket housing 10; the liquid cooling assembly 30 includes a terminal connecting block 31, a coolant input component 32, and a cooling block 33. The terminal connecting block 31 is used to connect the two DC terminals 20, and the two DC terminals 20 are connected to the coolant input component 32. The terminal connecting block 31 and the two DC terminals 20 enclose a mounting groove, and the cooling block 33 is installed in the mounting groove; the bottom wall or top wall of the cooling block 33 is provided with two connection ports 33a, and the two connection ports 33a are respectively connected to the coolant input component 32.

[0043] In this embodiment, the socket housing 10 refers to the main structure that carries the electrical components, which can be made of die-cast aluminum alloy to provide structural support and electromagnetic shielding. The DC terminal 20 refers to the current transmission conductor, which can be made of silver-plated copper alloy to ensure high current carrying capacity. The terminal connecting block 31 refers to the electrical connection component, which can be made of high thermal conductivity copper alloy by milling, and performs both electrical and thermal conductivity functions. The cooling block 33 refers to the heat exchange component, which can be made of aluminum component with an internal serpentine flow channel to remove heat through forced convection. The mounting groove refers to the positioning structure, which can be made by creating a groove on the side wall of the DC terminal 20 to fit with the end face of the terminal connecting block 31, ensuring close contact between the cooling block 33 and the heat-generating component. This solution, through structural design, forms a complete liquid cooling circuit with the terminal connecting block 31, DC terminal 20, cooling block 33, and coolant input component 32, thereby achieving continuous cooling during socket operation.

[0044] Specifically, when a large current flows through the DC terminal 20, the heat generated is transferred to the cooling block 33. At this time, the coolant enters the internal flow channel of the cooling block 33 from the coolant inlet 32, allowing the cooling block 33 to contact the coolant for heat exchange, thereby reducing the heat of the DC terminal 20 and achieving the purpose of lowering the temperature. The mounting slot allows three sides of the cooling block 33 to contact the heat-generating components, forming a three-dimensional heat dissipation interface. In the implementation example, the bottom connection port 33a of the cooling block 33 and the coolant inlet 32 ​​adopt a quick-connect sealing connection, and a temperature monitoring point is set on the top surface to provide real-time feedback on the heat dissipation status. This structure ensures that the cooling medium flows directly through the area with the most concentrated heat generation, shortening the heat conduction path by more than 60% compared to traditional external heat dissipation methods.

[0045] Compared to existing technologies, traditional solutions using external heat sinks require heat to be conducted to the heat dissipation surface through multiple interfaces, resulting in low heat dissipation efficiency due to the accumulation of thermal resistance. This solution establishes an indirect contact heat dissipation interface by embedding the cooling block 33 into the mounting groove formed by the terminal connecting block 31 and the two DC terminals 20. This structural innovation avoids the increased volume caused by additional heat sinks and prevents coolant leakage through a closed flow channel design.

[0046] This utility model's charging socket achieves active cooling through a liquid cooling component 30, meeting the high-efficiency heat dissipation requirements of the charging socket during high-power transmission. The terminal connecting block 31 in the liquid cooling component 30 connects two DC terminals 20, which are connected to the coolant input component 32, allowing for effective introduction of coolant for heat exchange. Simultaneously, a cooling block 33 is installed within the mounting groove formed by the terminal connecting block 31 and the two DC terminals 20, further providing a flow channel for the coolant and enhancing heat dissipation. Two connection ports 33a on the bottom or top wall of the cooling block 33 communicate with the coolant input component 32, ensuring coolant flow. This structural design allows the coolant to more fully contact the heat-generating components for heat absorption and cooling, effectively reducing the temperature of critical components such as the DC terminals 20. This prevents performance degradation and accelerated aging caused by high temperatures, improves the stability and safety of the charging process, extends the lifespan of the charging socket, and enables it to adapt to higher power charging demands.

[0047] In one embodiment, please refer to Figures 1 to 5 The cooling block 33 is also provided with an internal flow path 33b, which is connected to two connection ports 33a; the two connection ports 33a are connected to the coolant inlet 32 ​​so that the coolant inlet 32 ​​is connected to the internal flow path 33b.

[0048] In this embodiment, the internal flow path 33b refers to a continuous channel structure machined within the cooling block 33, which increases the contact area between the coolant and the cooling block 33 to improve heat exchange efficiency. Preferably, the continuous channel structure can adopt a serpentine meandering path or a three-dimensional mesh structure. The connection port 33a refers to a through structure provided on the end walls of the cooling block 33, which allows the coolant inlet 32 ​​to flow with the internal flow path 33b.

[0049] Specifically, the coolant enters the internal flow path 33b through a connector 33a via the coolant inlet 32, flows along a predetermined path through the cooling block 33, and then returns to the coolant inlet 32 ​​through another connector 33a, forming a cooling circuit. During the flow, the heat absorbed by the cooling block 33 is continuously carried away by the flowing coolant. The three-dimensional design of the internal flow path 33b allows the coolant to flow in multiple directions within the cooling block 33. Compared to a single straight path, its flow area covers most of the internal space of the cooling block 33, ensuring uniform heat exchange.

[0050] This design uses two connection ports 33a to cooperate with the internal flow path 33b of the cooling block 33, so that the coolant can form a bidirectional circulation flow inside the cooling block 33. The coolant flow rate is kept balanced in each section of the flow path, avoiding the phenomenon of flow stagnation in local areas.

[0051] In one embodiment, please refer to Figure 3, Figure 5 and Figure 6 Each DC terminal 20 is provided with a recess 20a and a mounting hole 20b communicating with the recess 20a. The extension direction of the recess 20a is perpendicular to the extension direction of the mounting hole 20b. The two ends of the cooling block 33 are respectively inserted into the two recesses 20a, and each connection port 33a is coaxially arranged with a mounting hole 20b. The end of the coolant input component 32 near the DC terminal 20 is inserted into the connection port 33a through the mounting hole 20b so that the coolant input component 32 communicates with the cooling block 33.

[0052] In this embodiment, the recessed channel 20a refers to a recessed channel formed inside the DC terminal 20, which can be machined or stamped to accommodate the end of the cooling block 33 and restrict its lateral displacement. The mounting hole 20b refers to a through hole perpendicularly connected to the recessed channel 20a, which can be formed by drilling or casting, and is used to guide the insertion path of the coolant input component 32. The connection port 33a refers to a fluid channel opening provided on the end face of the cooling block 33, for example, using a cylindrical channel structure, whose axis coincides with the axis of the mounting hole 20b, so as to achieve a non-skewed connection between the coolant input component 32 and the internal flow path 33b.

[0053] After the cooling block 33 is inserted into the recess 20a, its end face forms a surface contact constraint with the side wall of the recess 20a, restricting the degree of freedom of movement of the cooling block 33 in the transverse plane. The coaxial arrangement of the connection port 33a and the mounting hole 20b ensures that when the coolant input component 32 passes through the mounting hole 20b, the central axis of the mounting hole 20b is automatically aligned with the axis of the connection port 33a, avoiding sealing failure due to angular deviation. During the process of the coolant input component 32 being inserted into the connection port 33a through the mounting hole 20b, the inner wall of the mounting hole 20b forms a radial limit on the outer diameter of the coolant input component 32, and the recess 20a forms a longitudinal limit on the end of the cooling block 33. Under this dual constraint, the sealing surfaces between the coolant input component 32 and the cooling block 33 are completely fitted together.

[0054] Compared to existing technologies, traditional charging sockets use planar bonding or threaded connections for their cooling components, leading to poor sealing due to accumulated installation tolerances. For example, in existing technologies, the cooling block is directly fixed to the terminal surface with bolts, which can easily create gaps between the cooling block and the contact surface due to vibration or thermal deformation, affecting the cooling effect. This solution uses a recessed groove 20a perpendicular to the mounting hole 20b, transforming the assembly of the cooling block 33 and the DC terminal 20 into a self-aligning plug-in connection, eliminating the accumulated errors of planar assembly. Simultaneously, the alignment of the axis of the connection port 33a and the mounting hole 20b allows the coolant input component 32 to automatically correct angular deviations during insertion, significantly reducing the risk of leakage compared to traditional angled plug-in connections. The recessed installation of the cooling block 33 in the recessed groove 20a effectively improves the heat conduction efficiency of the heat dissipation contact surface. The coaxial plug-in connection between the coolant input component 32 and the connection port 33a simplifies the assembly process and reduces the probability of leakage due to human error, thereby improving the overall continuous heat dissipation capability of the charging socket under high-power conditions.

[0055] In one embodiment, please refer to Figure 3 , Figures 5 to 8 The coolant input component 32 includes two coolant inlets 321 and two liquid cooling pipes 322. One end of each coolant inlet 321 passes through a mounting hole 20b so that one end of the coolant inlet 321 is connected to the connection port 33a. Each liquid cooling pipe 322 is connected to the end of a coolant inlet 321 away from the DC terminal 20 and is connected to the coolant inlet 321.

[0056] The coolant inlet 321 is an interface component used to connect the cooling block 33 to the external cooling system. It can be implemented using a metal or plastic structure with a vertical pipe section. The liquid cooling pipe 322 refers to a flexible or rigid pipe used to transport coolant. It can be implemented using a high-temperature resistant rubber pipe or a copper pipe. The two liquid cooling pipes 322 are respectively connected to the ends of the two coolant inlets 321 to form a cooling circuit with one inlet and one outlet.

[0057] Common threaded connections in existing technologies carry the risk of loosening. In this solution, the plug-in connection between the coolant inlet 321 and the mounting hole 20b achieves axial fixation through structural limiting, and a stable seal is formed with the sealing ring. This embodiment uses two coolant inlets 321 for the coolant input component 32. The two inlets 321 employ an independent flow channel design to avoid flow interference. The vertically arranged outlet pipe section 321c and inlet pipe section 321a optimize space utilization. The plug-in installation and sealing structure simultaneously meets the requirements of connection stability and sealing, ensuring no coolant leakage during high-pressure circulation.

[0058] In one embodiment, please refer to Figure 3 , Figures 5 to 8The liquid cooling assembly 30 also includes two spring tubes (not shown in the figure), each spring tube being sleeved outside a liquid cooling tube 322.

[0059] In this embodiment, the spring tube refers to an elastic tube with a helical structure, specifically a stainless steel spring or a nickel-titanium alloy spring, whose helical gap allows for radial compression and extension. The spring tube coaxially covers the outside of the liquid cooling pipe 322, specifically using an interference fit or a snap-fit ​​fixing method, so that the inner wall of the spring tube and the outer wall of the liquid cooling pipe 322 form a contact constraint. The spring tube effectively improves the external structural strength of the liquid cooling pipe 322, preventing the cooling pipe 322 from breaking and failing due to external mechanical impact. Through the above-mentioned arrangement, it is possible to effectively prevent the connection of the liquid cooling pipe 322 from loosening under vibration or temperature fluctuations, avoid the risk of coolant leakage, and improve the reliability of the liquid cooling system in dynamic working environments.

[0060] In one embodiment, please refer to Figure 3 , Figures 5 to 8 Each coolant inlet 321 includes an inlet pipe section 321a, an inlet body 321b, and an outlet pipe section 321c connected in sequence. The inlet pipe section 321a and the outlet pipe section 321c are arranged vertically. The inlet pipe section 321a is inserted into the mounting hole 20b and communicates with the connection port 33a. The outlet pipe section 321c is connected to a liquid cooling pipe 322.

[0061] In this embodiment, the inlet pipe section 321a is a tubular structure connecting the cooling block 33, which can be implemented using a cylindrical metal tube, with its outer diameter and the inner diameter of the connection port 33a forming an interference fit. The outlet pipe section 321c is a tubular structure connecting the liquid cooling pipe 322, with an annular groove at its end for fixing the sealing ring. The inlet body 321b is the transition component connecting the inlet pipe section 321a and the outlet pipe section 321c, with a right-angle bend inside to achieve fluid diversion. Vertical arrangement means that the inlet pipe section 321a and the outlet pipe section 321c form a 90-degree angle.

[0062] After the inlet pipe section 321a of the coolant inlet 321 is inserted into the mounting hole 20b of the DC terminal 20, its end is directly connected to the connection port 33a to minimize flow resistance. The vertical connection layout between the outlet pipe section 321c and the inlet pipe section 321a can extend laterally along the socket housing 10 to avoid spatial interference with the DC terminal 20 and optimize the structural space arrangement. Two independent coolant inlets 321 are respectively inserted into the two connection ports 33a of the cooling block 33, forming a symmetrically distributed coolant delivery path. When coolant enters the outlet pipe section 321c from one liquid cooling pipe 322, it is directly injected into the internal flow path 33b of the cooling block 33 through the inlet pipe section 321a, and then transported from the internal flow path 33b through the other coolant inlet 321 to the other liquid cooling pipe 322 before being discharged, thus realizing a complete cooling circuit.

[0063] Specifically, when the inlet pipe section 321a is inserted into the mounting hole 20b, the outer wall of the inlet pipe section 321a forms a surface contact seal with the inner wall of the connection port 33a. A rubber sealing ring is installed in the annular groove of the outlet pipe section 321c to achieve a radial compression seal with the liquid cooling pipe 322. The rounded transition design of the internal bend of the inlet body 321b reduces fluid resistance, and the material selection balances corrosion resistance and structural strength. The vertical arrangement structure gives the coolant inlet 321 an L-shaped overall orientation, effectively utilizing the lateral space of the socket housing 10.

[0064] Compared to existing technologies, traditional coolant connectors use a straight-through pipe layout, requiring simultaneous alignment of axial and radial positions during installation, resulting in low assembly efficiency. This solution achieves orthogonal positioning of the two connection ports through a vertical arrangement design. During assembly, only a single-direction push is needed to simultaneously align the two sealing surfaces, effectively reducing assembly difficulty. This application enables rapid and precise assembly of the coolant inlet 321 with the mounting hole 20b and liquid cooling pipe 322, eliminating stress concentration problems caused by angular deviations at pipe connections and preventing coolant leakage during high-pressure transmission. The vertical layout structure provides stable support for the coolant inlet 321 within a limited space.

[0065] Optionally, a leakage detection plate is provided on the outside of the coolant inlet 321. The leakage detection plate can monitor in real time whether leakage occurs at the connection between the inlet pipe section 321a and the cooling block 33, and at the connection between the outlet pipe section 321c and the liquid cooling pipe 322, and react promptly to leakage in the liquid cooling system to prevent safety accidents caused by coolant leakage during the operation of the liquid cooling system.

[0066] In one embodiment, please refer to Figure 3 , Figures 5 to 8 The circumferential outer wall of the liquid inlet pipe section 321a is provided with a plurality of first flanges. The plurality of first flanges are arranged at intervals along the axial direction of the liquid inlet pipe section 321a and abut against the inner wall of the connection port 33a.

[0067] The outer circumferential wall of the liquid outlet pipe section 321c is provided with multiple second flanges. The multiple second flanges are arranged at intervals along the axial direction of the liquid outlet pipe section 321c and abut against the inner wall of the liquid cooling pipe 322.

[0068] The first flange refers to an annular protrusion extending circumferentially along the outer surface of the inlet pipe section 321a. It can be manufactured using molding or injection molding processes, and its axially spaced arrangement forms a stepped contact surface, creating a multi-stage sealing effect when it abuts against the inner wall of the connection port 33a. The second flange refers to an elastic protrusion distributed circumferentially along the outer surface of the outlet pipe section 321c. It can be made of deformable rubber or silicone material, and its axially spaced arrangement forms elastic support points, generating radial compression deformation when it abuts against the inner wall of the liquid cooling pipe 322.

[0069] The axially spaced arrangement of the first flanges allows for redundant sealing structures through multi-point contact during assembly of the inlet pipe section 321a and the connection port 33a. For example, when machining errors cause the pipe diameter to be smaller, the reduced spacing between adjacent flanges can compensate for the contact pressure and prevent single-point seal failure. For the second flange, its elastic material properties allow the elastic deformation of the flange to absorb stress during axial displacement caused by vibration or temperature changes when the outlet pipe section 321c is connected to the liquid cooling pipe 322, while maintaining radial contact pressure. When the two flanges are combined, the stepped seal of the first flange and the elastic support of the second flange complement each other, simultaneously coping with the thermal expansion of the metal parts and the creep of the hose in high-temperature environments. Preferably, a steel hoop is fitted around the connection between the outlet pipe section 321c and the liquid cooling pipe 322 for further tightening.

[0070] In one embodiment, please refer to Figure 3 , Figures 5 to 8 The charging socket is also equipped with a tail cover, and the mouthpiece body 321b is equipped with a limiting plate 321d, which abuts against and is securely installed with the outer wall of the tail cover.

[0071] The charging socket also includes a tail cover that is fixedly connected to the socket housing 10. The tail cover is inserted into two DC terminals 20, which are fixedly installed inside the socket housing 10.

[0072] The limiting plate 321d is a plate-like structure installed on the outer wall of the inlet body 321b. It can be made of metal sheet by stamping or by welding. It is used to limit the positional displacement of the coolant input component 32 during installation. The limiting plate 321d abuts against the outer wall of the tail cap, so that the coolant input component 32 is axially aligned and guided during installation, and the friction generated by the contact surface constrains the displacement.

[0073] Specifically, when installing the coolant inlet 32, the parallel contact between the limiting plate 321d and the outer wall of the tail cap forms a physical limit. At the same time, the limiting plate 321d and the tail cap are firmly installed. When the liquid cooling system is running, the continuous contact between the limiting plate 321d and the outer wall of the tail cap can suppress the radial displacement of the coolant inlet 32 ​​caused by vibration or pressure fluctuation, thereby preventing the sealing interface between the connection port 33a and the mounting hole 20b from gaps due to displacement.

[0074] This solution achieves automatic angle correction during installation by having the limiting plate 321d contact the plane of the outer wall of the tail cover. At the same time, it forms an anti-loosening structure through mechanical contact, ensuring the stable connection of the liquid cooling component 30.

[0075] In one embodiment, please refer to Figure 6The charging socket also includes a PCB circuit board 40 and a temperature sensor. The PCB circuit board 40 is mounted on the socket housing 10. The temperature sensor is integrated on the PCB circuit board 40 and is electrically connected to the PCB circuit board 40 and external circuits to monitor the real-time temperature of the PCB circuit board 40. Two DC terminals 20 pass through the PCB circuit board 40 and are connected to the socket housing 10 and electrically connected to the PCB circuit board 40.

[0076] In this embodiment, PCB circuit board 40 refers to a printed circuit board, specifically a composite structure of glass fiber substrate and copper foil circuitry, serving as a mounting carrier and electrical connection medium for electronic components. Its function is to provide a mechanical fixation and electrical interconnection foundation for the temperature sensor, while also supporting the charging control circuitry. The temperature sensor is a temperature-sensitive element, specifically a surface-mount thermistor or digital temperature chip, integrated onto the surface of PCB circuit board 40 via soldering or surface mounting. Its function is to sense real-time changes in the circuit board's operating temperature through direct contact with the PCB copper foil. The through-hole DC terminal 20 refers to a conductive metal component with an axial through-hole, specifically a columnar structure made of copper alloy, with through-holes provided at corresponding positions on the PCB circuit board 40 for through-mounting. Its function is to provide a low-impedance path for high-current transmission, while also providing mechanical positioning through the through-hole connection.

[0077] Specifically, the temperature sensor is integrated into the heat-concentrating area of ​​the PCB circuit board 40 via surface mount technology, such as near the via of the DC terminal 20. When a large current flows through the DC terminal 20 during charging, the generated Joule heat is conducted to the PCB circuit board 40 through the metal, and the temperature sensor directly detects the temperature change in this area. The detection signal is transmitted to the control unit through the internal traces of the PCB. When the temperature exceeds a preset threshold, the external circuit can trigger an over-temperature protection mechanism, such as reducing the charging power or cutting off the power supply. The DC terminal 20 passes through the via structure of the PCB circuit board 40, achieving electrical connection while strengthening the mechanical fixation between the PCB and the housing through nut tightening or soldering.

[0078] Installation steps of the charging socket: First, install the flange and end cap on the socket housing 10, install the mounting gasket on the flange and the top cover plate, set the housing sealing ring on the socket housing 10, and fit the terminal sealing ring on the DC terminal 20. Connect the DC terminal 20 (+ / -) through the terminal connecting block 31 and screws. Place the cooling block 33 into the terminal connecting block 31. Install the signal terminal and PE terminal on the PCB circuit board 40. Install the PCB circuit board 40 on the socket housing 10. Install the tail cover on the socket housing 10. Install the tail sealing ring on the DC terminal 20. Install the cable sealing cover on the tail cover. Install the inlet sealing ring on the coolant inlet 321. Install the coolant inlet 321 on the tail cover. Install the leakage detection plate inside the leakage detection box and install it on the socket housing 10.

[0079] In some specific embodiments, temperature sensors can be arranged on both sides of the PCB circuit board 40 to form redundant monitoring; an annular insulating pad can be provided in the through portion of the DC terminal 20 to prevent high voltage breakdown; the copper foil traces of the PCB circuit board 40 can be designed to be wider and thicker to improve current carrying capacity.

[0080] This solution utilizes a PCB board for signal transmission and temperature detection within the charging socket, significantly reducing the complexity of the internal wiring layout. Furthermore, by connecting to external signal lines via adapter pins, it enhances the sealing of the internal environment and improves safety during operation. The temperature sensor in this solution is a surface-mount thermistor fixed to the PCB surface, with the thermistor and other signal terminal wires integrated into the PCB board and connected to the outside via pins. This simplifies the internal wiring of the charging socket, reduces the risk of signal line bending and tangling, and improves signal transmission stability. Additionally, the connection to the outside via pins enhances the sealing of the charging socket's internal structure.

[0081] In one embodiment, please refer to Figure 3 , Figures 5 to 8 The charging socket also includes an insulating elastic protective sleeve fitted over the temperature sensor.

[0082] The insulating elastic protective sleeve is a flexible protective component made of insulating material, specifically silicone or rubber. This sleeve wraps around the temperature sensor, preventing direct contact between the sensor and conductive components through its insulating properties. The temperature sensor is an electronic component used to detect the temperature of the PCB circuit board 40, typically a thermistor or thermocouple, integrated on the PCB circuit board 40 and electrically connected to external circuitry. The tight-fitting design of the elastic protective sleeve ensures a gapless fit between the inner wall of the sleeve and the outer surface of the temperature sensor. This can be achieved using a thermoplastic elastomer material through injection molding, allowing for deformation under pressure to cushion mechanical impacts.

[0083] Through the above technical solution, this application effectively prevents structural damage to the temperature sensor caused by mechanical impact, while avoiding short-circuit faults caused by contact between the sensor and surrounding conductive components. The sensor's protection level is upgraded to IP67 standard, maintaining temperature monitoring accuracy even under complex operating conditions and ensuring the safety of the charging process.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A charging socket, characterized by, The charging socket includes: Socket housing (10); The liquid cooling assembly (30) includes a terminal connecting block (31), a coolant input component (32), and a cooling block (33). The terminal connecting block (31) is used to connect two DC terminals (20). The two DC terminals (20) are connected to the coolant input component (32). The terminal connecting block (31) and the two DC terminals (20) form a mounting groove. The cooling block (33) is installed in the mounting groove. The bottom wall or top wall of the cooling block (33) is provided with two connection ports (33a). The two connection ports (33a) are respectively connected to the coolant input component (32).

2. The charging outlet of claim 1, wherein, The cooling block (33) is also provided with an internal flow path (33b), which is connected to two of the connection ports (33a); the two connection ports (33a) are connected to the coolant input component (32) so that the coolant input component (32) is connected to the internal flow path (33b).

3. The charging outlet of claim 1, wherein, Each of the DC terminals (20) is provided with a recess (20a) and a mounting hole (20b) communicating with the recess (20a). The extension direction of the recess (20a) is perpendicular to the extension direction of the mounting hole (20b). The two ends of the cooling block (33) are respectively inserted into the two recesses (20a), and each of the connection ports (33a) is coaxially arranged with one of the mounting holes (20b). The coolant input component (32) is inserted into the connector (33a) through the mounting hole (20b) at one end near the DC terminal (20) so that the coolant input component (32) is connected to the cooling block (33).

4. The charging station of claim 3, wherein, The coolant inlet (32) includes: Two coolant inlets (321), one end of each coolant inlet (321) passing through a mounting hole (20b) so that one end of the coolant inlet (321) communicates with the connector (33a); and Two liquid cooling tubes (322), each of which is connected to one end of a coolant inlet (321) away from the DC terminal (20) and communicates with the coolant inlet (321).

5. The charging station of claim 4, wherein, The liquid cooling assembly also includes two spring tubes, each of which is sleeved outside one of the liquid cooling tubes (322).

6. The charging station of claim 4, wherein, Each of the coolant inlets (321) includes an inlet pipe section (321a), an inlet body (321b), and an outlet pipe section (321c) connected in sequence, wherein the inlet pipe section (321a) and the outlet pipe section (321c) are arranged vertically; the inlet pipe section (321a) is inserted into the mounting hole (20b) and communicates with the connection port (33a); the outlet pipe section (321c) is connected to a liquid cooling pipe (322).

7. The charging station of claim 6, wherein, The circumferential outer wall of the liquid inlet pipe section (321a) is provided with a plurality of first flanges, which are arranged at intervals along the axial direction of the liquid inlet pipe section (321a) and abut against the inner wall of the connection port (33a). And / or, the circumferential outer wall of the liquid outlet pipe section (321c) is provided with a plurality of second flanges, the plurality of second flanges being arranged at intervals along the axial direction of the liquid outlet pipe section (321c) and abutting against the inner wall of the liquid cooling pipe (322).

8. The charging station of claim 6, wherein, The charging socket is also provided with a tail cover, and the mouthpiece body is provided with a limiting plate (321d), which abuts against and is securely installed with the outer wall of the tail cover.

9. The charging station of claim 1, wherein, The charging socket also includes a PCB circuit board (40) and a temperature sensor (50). The PCB circuit board (40) is mounted on the socket housing (10). The temperature sensor (50) is integrated on the PCB circuit board (40) and electrically connected to the PCB circuit board (40) and external circuits to monitor the real-time temperature of the PCB circuit board (40). Two DC terminals (20) pass through the PCB circuit board (40) and are connected to the socket housing (10) and electrically connected to the PCB circuit board (40).

10. The charging station of claim 9, wherein, The charging socket also includes an insulating elastic protective sleeve fitted over the temperature sensor (50).

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