Sealed conductive terminal and charging system

Abstract

The utility model discloses a sealed conductive terminal and a charging system, and belongs to the technical field of electrical connection. The sealing conductive terminal is applied to the oil immersion liquid cooling power module and comprises a shell, a packaging forming part, a sealing rubber ring, a sealing block and a sealing rubber mat, the shell comprises a containing cavity and a connecting part, and the connecting part extends out of the periphery of the containing cavity; the packaging forming part is arranged in the accommodating cavity; the sealing rubber ring is arranged on the periphery of the packaging forming part, and when the packaging forming part is arranged in the containing cavity, the sealing rubber ring is attached to the inner wall of the containing cavity; the sealing block is connected to the packaging forming piece and attached to the inner wall of the containing cavity. The sealing rubber pad is arranged on the side, connected with the oil immersion liquid cooling module, of the connecting part. The sealing conductive terminal can solve the problems that an existing sealing conductive terminal is poor in sealing performance and inconvenient to maintain in the later period.

Description

Technical Field

[0001] This application relates to the field of electrical connection technology, and in particular to a sealed conductive terminal and a charging system. Background Technology

[0002] An oil-immersed liquid-cooled power module is a power module that employs oil-immersed liquid cooling technology. It includes a housing, power circuits or battery cells installed inside the housing, a liquid inlet, a liquid outlet, and conductive terminals. During heat dissipation, cooling oil is supplied to the power module through the liquid inlet, allowing the cooling oil to directly contact the power devices and battery cells for rapid and even heat absorption. The conductive terminals, as key components for electrical connection between the module and external circuits, must not only ensure stable current transmission but also possess reliable sealing performance to maintain the integrity of the entire oil-immersed liquid-cooling system.

[0003] However, the existing oil-immersed liquid-cooled power modules have poor sealing performance of the conductive terminals, which makes it easy for cooling oil to enter the terminal-to-terminal mating position and cause leakage of insulating cooling oil. At the same time, the existing conductive terminals are relatively complex to manufacture. After electrical connection, the entire conductive terminal needs to be filled with resin for sealing. During subsequent maintenance, the conductive terminal needs to be removed from the resin, which is a cumbersome operation. Utility Model Content

[0004] The main purpose of this application is to provide a sealed conductive terminal and a charging system, which aims to solve the problems of poor sealing performance and inconvenience of later maintenance of existing sealed conductive terminals.

[0005] To achieve the above objectives, this application provides a sealed conductive terminal for use in an oil-immersed liquid-cooled power module. The sealed conductive terminal includes: a housing, a packaged component, a sealing ring, a sealing block, and a sealing gasket. The housing includes a receiving cavity and a connecting portion, the connecting portion extending outward from the outer periphery of the receiving cavity. The packaged component is disposed within the receiving cavity. The sealing ring is disposed on the outer periphery of the packaged component, and when the packaged component is disposed within the receiving cavity, the sealing ring adheres to the inner wall of the receiving cavity. The sealing block is connected to the packaged component and adheres to the inner wall of the receiving cavity. The sealing gasket is disposed on the side of the connecting portion that connects to the oil-immersed liquid-cooled module.

[0006] Optionally, the encapsulation component includes: a sealing body, at least one conductor, and a groove, wherein at least one conductor is disposed on the sealing body and passes through the sealing body; the groove is formed on the outer periphery of the sealing body, and the sealing ring is disposed in the groove.

[0007] Optionally, the encapsulation component further includes: a partition, wherein the partition passes through the sealing body and when there are at least two conductors, the partition is disposed between two adjacent conductors, the partition includes a partition portion and a mating portion, the end of the mating portion is provided with a hook, the receiving cavity is provided with an elastic buckle, and the hook is engaged in the elastic buckle.

[0008] Optionally, the conductor includes a main body and an elastic conductive fork, wherein the elastic conductive fork is fixed to one end of the main body.

[0009] Optionally, the elastic conductive fork includes: a transition conductor, two or more elastic conductive finger springs, and two metal spring finger springs, wherein one end of the transition conductor is fixed to the main body; the two or more elastic conductive finger springs are fixed to the other end of the transition conductor; and the two metal spring finger springs are respectively disposed on both sides of the two or more elastic conductive finger springs.

[0010] Optionally, the main body has a plurality of annular grooves in the middle.

[0011] Optionally, the internal components of the sealed conductive terminal are snapped into the housing.

[0012] Optionally, the housing is made of plastic.

[0013] Optionally, the sealing ring and the sealing gasket are made of rubber.

[0014] Furthermore, to achieve the above objectives, this application also provides a charging system, including at least two power modules, a controller, a power distribution device, and at least one charging interface, wherein the power distribution device is connected to the controller, each of the power modules, and each of the charging interfaces respectively; the power modules are used to convert AC power flowing from the grid into DC power and supply it to the charging interfaces, and the power modules include sealed conductive terminals as described in any of the above claims; the controller is used to acquire the required power of each of the charging interfaces and generate scheduling instructions based on the connection relationship of the controllable switches in the power distribution device and the required power; the power distribution device is used to control the opening or closing of the controllable switches according to the scheduling instructions to distribute the output power of each of the power modules to each of the charging interfaces.

[0015] This application discloses a sealed conductive terminal. When this sealed conductive terminal is installed on an oil-immersed liquid cooling module, the presence of a sealing gasket prevents liquid leakage at the contact point between the oil-immersed liquid cooling module and the sealed conductive terminal. By setting a sealing block and a sealing ring, a sealed fit is ensured between the housing and the encapsulated component, preventing liquid from flowing out between them and guaranteeing the device's airtightness. Furthermore, the sealed conductive terminal of this application eliminates the need for resin filling and sealing of the entire device after electrical connection, facilitating maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sealed conductive terminal provided in an embodiment of this application;

[0017] Figure 2 for Figure 1 The exploded image;

[0018] Figure 3 for Figure 1 A structural diagram from another perspective;

[0019] Figure 4 for Figure 3 AA section view;

[0020] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0021] Figure 6 for Figure 1 A structural diagram from another perspective;

[0022] Figure 7 for Figure 6 BB cross-sectional view;

[0023] Figure 8 for Figure 1 Schematic diagram of the structure of the in-packaged molding component;

[0024] Figure 9 for Figure 8 A structural diagram from another perspective;

[0025] Figure 10 for Figure 9 CC section view;

[0026] Figure 11 for Figure 8 Schematic diagram of the structure of a medium-conducting conductor;

[0027] Figure 12 for Figure 11 A structural diagram from another perspective;

[0028] Figure 13 for Figure 12 Exploded view of a medium-elastic conductive fork;

[0029] Figure 14 This is a schematic diagram of the structure of a sealed conductive terminal in use according to this application;

[0030] Figure 15 This is a block diagram of a charging system provided in an embodiment of this application.

[0031] In the figure, 1 is the housing; 101 is the receiving cavity; 102 is the connecting part; 103 is the elastic buckle; 2 is the encapsulated part; 201 is the sealing body; 202 is the conductor; 2021 is the main body; 2022 is the elastic conductive fork; 2023 is the adapter conductor; 2024 is the elastic conductive finger spring; 2025 is the metal spring finger spring; 2026 is the annular groove; 203 is the groove; 204 is the partition; 2041 is the partition part; 2042 is the mating part; 2043 is the hook; 3 is the sealing ring; 4 is the sealing block; 5 is the sealing gasket; 110 is the power module; 120 is the charging interface; 130 is the controller; and 140 is the power distribution device.

[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] 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 protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] 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 meaning of "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.

[0037] Please see Figures 1 to 14 This application provides a sealed conductive terminal for use in an oil-immersed liquid-cooled power module. The sealed conductive terminal may include: a housing 1, a packaged component 2, a sealing ring 3, a sealing block 4, and a sealing gasket 5. The housing 1 includes a receiving cavity 101 and a connecting portion 102, with the connecting portion 102 extending out of the outer periphery of the receiving cavity 101. The packaged component 2 is disposed within the receiving cavity 101. The sealing ring 3 is disposed on the outer periphery of the packaged component 2, and when the packaged component 2 is disposed within the receiving cavity 101, the sealing ring 3 adheres to the inner wall of the receiving cavity 101. The sealing block 4 is connected to the packaged component 2 and adheres to the inner wall of the receiving cavity 101. The sealing gasket 5 is disposed on the side of the connecting portion 102 that connects to the oil-immersed liquid-cooled module.

[0038] In this embodiment, the housing 1 is the basic structure of the entire terminal, and its configuration is crucial for protecting internal components and maintaining overall structural strength. The encapsulated component 2 needs to have stability when mating with other components. The main function of the sealing ring 3 is to prevent cooling oil leakage or external impurities from entering the receiving cavity 101, ensuring the device's airtightness. The presence of the sealing block 4 further enhances the system's sealing performance. The purpose of the sealing gasket 5 is to ensure good sealing performance between the connection portion 102 and the side that contacts the oil-immersed liquid cooling module, preventing cooling oil leakage. After the sealed conductive terminal of this application is installed on the oil-immersed liquid cooling module, the presence of the sealing gasket 5 prevents liquid leakage at the contact point between the oil-immersed liquid cooling module and the sealed conductive terminal. By setting the sealing block 4 and the sealing ring 3, a sealed fit is ensured between the housing 1 and the encapsulated component 2, preventing liquid from flowing out between them and ensuring the device's airtightness. In addition, the sealed conductive terminal of this application does not require resin filling and sealing of the entire device after electrical connection, facilitating maintenance.

[0039] Please see Figure 8 The encapsulated component 2 may include: a sealing body 201, at least one conductor 202, and a groove 203, wherein at least one conductor 202 is disposed on the sealing body 201 and passes through the sealing body 201; the groove 203 is formed on the outer periphery of the sealing body 201, and the sealing ring 3 is disposed in the groove 203.

[0040] Specifically, the encapsulation body 201 is the basic part of the packaged component 2, and is typically made of a material with good mechanical and insulating properties. The encapsulation body 201 not only provides physical support for other components but also isolates the electrical connections between different conductors, ensuring the safety of the entire system. Depending on different application requirements, there may be one, two, three, four, etc., conductors 202, the specific number depending on the design purpose of the terminals and the type and quantity of electrical signals to be transmitted. These conductors 202 are disposed on the encapsulation body 201 and pass through it. The main function of the conductors 202 is to transmit current or signals, and their design must ensure high conductivity and reliability. A groove 203 is formed on the outer periphery of the encapsulation body 201 to accommodate the sealing ring 3. By embedding the sealing ring 3 into the groove 203, the sealing effect is enhanced, ensuring that when the packaged component 2 is installed in the receiving cavity 101 of the housing 1, it can fit tightly against the inner wall of the receiving cavity 101, effectively preventing cooling oil leakage or external contaminants from entering the system.

[0041] The above structural design cleverly combines the requirements of conductivity, insulation, and sealing, ensuring that the sealed conductive terminals can efficiently complete the task of transmitting electrical signals while maintaining good sealing performance in harsh working environments. This extends the service life of the equipment and improves operational safety and stability. Furthermore, this design also helps simplify the assembly process and improve production efficiency.

[0042] Please see Figure 5 , Figure 8 as well as Figure 10 The encapsulated component 2 may further include: a partition 204, wherein the partition 204 passes through the sealing body 201 and when there are at least two conductors 202, the partition 204 is disposed between two adjacent conductors 202. The partition 204 includes a partition portion 2041 and a mating portion 2042. The end of the mating portion 2042 is provided with a hook 2043. An elastic buckle 103 is provided in the receiving cavity 101, and the hook 2043 is engaged in the elastic buckle 103.

[0043] In this embodiment, a partition 204 is provided, which is divided into a partition portion 2041 and a mating portion 2042. A hook 2043 is provided at the end of the mating portion 2042, and an elastic buckle 103 is provided in the receiving cavity 101, so that the hook 2043 is engaged in the elastic buckle 103. The advantages of this design are twofold: First, it is easy to assemble. After encapsulation and installation with the housing 1, it automatically locks in place without displacement, and epoxy resin can be directly potted in reverse without the need for other pressing tools. Second, since the epoxy potting is in the direction of the rectangular opening of the injection molded shell, the epoxy resin will be relatively hard and brittle after curing. When inserting the copper busbar, the insertion of the metal terminal will generate a force in the opposite direction to the rectangular opening of the injection molded shell. The buckle 103 can limit the displacement of the encapsulated part in the direction of the rectangular opening of the plastic shell, and protect the epoxy potting cured position in the direction of the rectangular opening of the injection molded shell from stress and cracking.

[0044] Please see Figure 11 The conductor 202 may include a main body 2021 and an elastic conductive fork 2022, wherein the elastic conductive fork 2022 is fixed to one end of the main body 2021.

[0045] The main conductor 2021 is the core component of the conductor 202, responsible for the primary current transmission. It is typically made of highly conductive materials (such as copper or aluminum) to ensure low resistance and high-efficiency power transmission. The design of the main conductor must consider its current carrying capacity, mechanical strength, and compatibility with other components. The flexible conductive fork 2022 is fixed to one end of the main conductor 2021 and primarily enhances the reliability of the electrical connection. The flexible conductive fork 2022 utilizes the elastic properties of its material to provide pressure when inserted into the corresponding socket or mating point, thereby ensuring good contact surface and low contact resistance. It maintains a stable electrical connection even when subjected to small displacements caused by factors such as vibration and temperature changes.

[0046] The design combining the main conductor 2021 with the flexible conductive fork 2022 is an effective way to improve the performance of sealed conductive terminals, especially suitable for applications requiring high reliability and stability. This design not only improves the safety and stability of the electrical connection but also enhances the overall system durability.

[0047] Please see Figure 13 The elastic conductive fork 2022 may include: a transition conductor 2023, two or more elastic conductive finger springs 2024, and two metal spring finger springs 2025, wherein one end of the transition conductor 2023 is fixed to the main body 2021; the two or more elastic conductive finger springs 2024 are fixed to the other end of the transition conductor 2023; and the two metal spring finger springs 2025 are respectively disposed on both sides of the two or more elastic conductive finger springs 2024.

[0048] Specifically, one end of the adapter conductor 2023 is fixed to the main body 2021, while the other end serves as a base support for mounting other more detailed conductive components. It acts as a bridge, connecting the main body 2021 to the elastic conductive finger springs 2024 and the metal spring finger springs 2025, ensuring smooth current transmission. Two or more elastic conductive finger springs 2024 are fixed to the other end of the adapter conductor 2023. The elastic conductive finger springs 2024 are designed to increase the contact area and, utilizing the elasticity of their material, apply appropriate pressure when inserted into the corresponding socket or mating point, thereby ensuring good electrical contact. They can compensate to some extent for displacement caused by manufacturing errors, installation deviations, or environmental factors (such as temperature changes), maintaining a long-term stable electrical connection. Two metal spring finger springs 2025 are respectively disposed on both sides of the two or more elastic conductive finger springs 2024. The function of the metal spring finger springs 2025 is to enhance the clamping force and stability of the entire elastic conductive fork 2022. By applying additional pressure to the sides, they help ensure that the flexible conductive finger springs 2024 fit tightly against the contact surface, reducing contact resistance and improving connection reliability.

[0049] By combining the elastic conductive finger spring 2024 and the metal spring finger spring 2025, a multi-layer protection mechanism is provided to ensure a stable low-resistance connection even under harsh operating conditions. This design can effectively cope with small displacements caused by factors such as vibration and thermal expansion and contraction, maintaining long-term stable performance. This structure not only improves the quality of electrical connections but also simplifies the assembly process, making maintenance and replacement more convenient and faster.

[0050] Please see Figure 11 The main body 2021 has multiple annular grooves 2026 in the middle.

[0051] In this embodiment, by providing an annular groove 2026 on the main body 2021, the contact area between the main body 2021 and the sealing body 201 can be significantly increased. This helps to improve the mechanical connection strength between the two and prevents the main body 2021 from shifting or loosening during use. In some cases, electrical equipment generates heat during operation, causing thermal stress between different materials due to differences in their coefficients of thermal expansion. The annular groove 2026 can help disperse these stresses, reducing the risk of damage caused by thermal expansion and contraction, thereby extending service life.

[0052] Furthermore, the adapter conductor 2023 is made of copper plate.

[0053] The adapter conductor 2023 is made of copper, allowing current to pass through it very efficiently, reducing energy loss and heat generation. Copper not only has excellent electrical conductivity but also sufficient mechanical strength and toughness, enabling it to withstand certain mechanical stresses while maintaining its shape—crucial for electrical connections requiring long-term stable operation. Copper also exhibits good corrosion resistance in most environments, especially in applications where it may come into contact with moisture or chemicals, which helps extend the component's lifespan.

[0054] Furthermore, the internal components of the sealed conductive terminal are snapped into the housing 1.

[0055] Specifically, snapping the internal components of the sealed conductive terminal to the housing 1 facilitates the disassembly and assembly of the internal components of the sealed conductive terminal and makes the fit between the internal components of the sealed conductive terminal and the housing 1 more secure.

[0056] Furthermore, the casing 1 is made of plastic.

[0057] In this embodiment, the housing 1 can be a mixture of multiple materials. For example, the housing 1 can be a mixture of PA66, PC, and PP. Using a mixture of PA66, PC, and PP combines their advantages, providing the housing 1 with a solution that balances mechanical strength, heat resistance, impact resistance, and chemical stability. This combination is particularly suitable for housings 1 used to seal conductive terminals, as they not only need to protect internal components from external environmental influences but also need to withstand various physical and chemical challenges that may be encountered during operation.

[0058] Furthermore, the proportions of these three materials can be adjusted according to the specific application requirements to further optimize the performance of shell 1, such as improving heat resistance or enhancing mechanical strength. This design approach reflects precise control over product performance and a deep understanding of actual application conditions.

[0059] Furthermore, the sealing ring 3 and the sealing gasket 5 can be made of rubber. Specifically, they can be a mixture of FKM rubber, NBR rubber, HNBR rubber, and CR rubber.

[0060] Specifically, this hybrid design approach is ideal for sealing rings 3 and gaskets 5 used to seal conductive terminals, as they not only need to withstand long-term contact with cooling oil but also need to withstand potential temperature variations and the effects of the external environment. By precisely controlling the proportions of these rubbers, an economical and efficient sealing solution can be achieved.

[0061] The overall assembly and filling sequence of the sealed conductive terminal involved in this application is as follows: First, the internal sealing ring 3 of the terminal is installed into the groove 203 on the encapsulation molding part 2. Then, the terminal insulating shell 1 is installed outside the encapsulation molding part 2, ensuring that the elastic buckle 103 on the terminal insulating shell 1 is locked with the hook 2043 on the encapsulation molding part 2. Then, epoxy material is filled into the opening surface of the shell 1 where the encapsulation molding part 2 is installed and the recess and gap formed by the assembly of the encapsulation molding part 2 for curing (after curing, a sealing block 4 is formed) to obtain the sealed conductive terminal.

[0062] Please see Figure 15 As an optional implementation, another embodiment of this application provides a charging system, which includes at least two power modules 110, a controller 130, a power distribution device 140, and at least one charging interface 120. The power distribution device 140 is connected to the controller 130, each power module 110, and each charging interface 120. The power module 110 is used to convert AC power flowing from the grid into DC power and supply it to the charging interface 120. The power module 110 includes the sealed conductive terminals mentioned above. The controller 130 is used to obtain the required power of each charging interface 120 and generate a scheduling command according to the connection relationship of the controllable switches in the power distribution device 140 and the required power. The power distribution device 140 is used to control the opening or closing of the controllable switches according to the scheduling command to distribute the output power of each power module 110 to each charging interface 120.

[0063] The sealed conductive terminal involved in this application is used in a charging system, and its main function is to conduct electricity and prevent the cooling oil in the oil-immersed liquid cooling module from leaking from the conductive terminal.

[0064] In one optional implementation, the charging system provided in this application is an integrated DC charging pile, with the charging interface 120 used to connect the charging gun, and the charging gun being hung on the host of the charging system via the gun holder on the main body of the charging system.

[0065] In one optional implementation, the charging system provided in this application is a split-type DC charging pile. The charging system also includes multiple charging terminals. The charging interface 120 is used to connect the charging terminals. The charging terminals are set separately from the main body of the charging system. The charging terminals are equipped with a single charging gun or dual charging guns for outputting power to electric vehicles.

[0066] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A sealed conductive terminal, characterized in that, Applied to oil-immersed liquid-cooled power modules, the sealed conductive terminals include: The housing (1) includes a receiving cavity (101) and a connecting portion (102) extending out of the outer periphery of the receiving cavity (101); A packaged molded component (2) is disposed within the receiving cavity (101); A sealing ring (3) is disposed on the outer periphery of the encapsulation molding part (2), and when the encapsulation molding part (2) is disposed in the receiving cavity (101), the sealing ring (3) is attached to the inner wall of the receiving cavity (101); The sealing block (4) is connected to the encapsulation molding (2) and fits against the inner wall of the receiving cavity (101); A sealing gasket (5) is provided on the side of the connection part (102) that is connected to the oil-immersed liquid cooling power module.

2. The sealed conductive terminal according to claim 1, characterized in that, The encapsulated component (2) includes: Solid seal body (201); At least one conductor (202) is disposed on the sealing body (201) and passes through the sealing body (201). A groove (203) is formed on the outer periphery of the sealing body (201), and the sealing ring (3) is disposed in the groove (203).

3. The sealed conductive terminal according to claim 2, characterized in that, The packaged component (2) further includes: When the partition (204) passes through the sealing body (201) and there are at least two conductors (202), the partition (204) is disposed between two adjacent conductors (202). The partition (204) includes a partition portion (2041) and a mating portion (2042). The end of the mating portion (2042) is provided with a hook (2043). An elastic buckle (103) is provided in the receiving cavity (101). The hook (2043) is engaged in the elastic buckle (103).

4. The sealed conductive terminal according to claim 2, characterized in that, The conductor (202) includes: The dominant entity (2021); An elastic conductive fork (2022) is fixed to one end of the main body (2021).

5. The sealed conductive terminal according to claim 4, characterized in that, The elastic conductive fork (2022) includes: The adapter conductor (2023) is fixed at one end to the main body (2021); Two or more elastic conductive finger springs (2024) are fixed to the other end of the adapter conductor (2023); Two metal spring finger springs (2025) are respectively disposed on both sides of the two or more elastic conductive finger springs (2024).

6. The sealed conductive terminal according to claim 4, characterized in that, The main body (2021) has multiple annular grooves (2026) in the middle.

7. The sealed conductive terminal according to claim 1, characterized in that, The internal components of the sealed conductive terminal are snapped into the housing (1).

8. The sealed conductive terminal according to claim 1, characterized in that, The shell (1) is made of plastic.

9. The sealed conductive terminal according to claim 1, characterized in that, The sealing ring (3) and the sealing gasket (5) are made of rubber.

10. A charging system, characterized in that, include: The system includes at least two power modules (110), a controller (130), a power distribution device (140), and at least one charging interface (120), wherein the power distribution device (140) is connected to the controller (130), each of the power modules (110), and each of the charging interfaces (120), respectively. The power module (110) is used to convert AC power flowing from the grid into AC power distribution equipment into DC power and supply it to the charging interface (120). The power module (110) includes a sealed conductive terminal as claimed in any one of claims 1 to 9. The controller (130) is used to obtain the power demand of each of the charging interfaces (120) and generate scheduling instructions according to the connection relationship of the controllable switches in the power distribution device (140) and the power demand. The power distribution device (140) is used to control the opening or closing of the controllable switch according to the scheduling instruction, so as to distribute the output power of each power module (110) to each charging interface (120).

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