A self-sealing terminal

Abstract

The application provides a self-sealing terminal, belonging to the technical field of storage batteries, which comprises a shell, a stud, a first conductor, a second conductor, a wire harness, a shell fastening assembly and a wire harness fixing assembly. The shell comprises a horizontal sleeve and a vertical sleeve and has a T-shaped structure. The stud is arranged on the shell. The first conductor is arranged on the stud and located in the vertical sleeve of the shell. The second conductor is arranged on the first conductor and located in the horizontal sleeve of the shell. The first conductor and the second conductor are arranged vertically in the shell. The wire harness is arranged on the second conductor. The shell fastening assembly is arranged at the end of the stud and wraps the stud together with the shell. The wire harness fixing assembly is arranged on the horizontal sleeve of the shell and wraps the wire harness. The wire harness fixing assembly is used for fixing the wire harness on the shell. The terminal can realize stable power transmission and protect the stud, preventing the stud from being exposed and causing short circuit.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a self-sealing terminal. Background Technology

[0002] Terminal blocks are increasingly widely used in various fields, including signal terminals, power terminals, and connection terminals. They are the connection ends in the circuit. Terminals are the components that connect the battery to external conductors. Their main function is to transmit electrical signals or conduct electricity. Low-voltage batteries typically use exposed terminals (studs) as connection points for external wiring harnesses. This connection method is widely used in the market, but it poses significant safety hazards. Because the terminals and studs are both live and exposed, a short circuit between the positive and negative terminals is highly likely if the battery is submerged in water or comes into contact with other conductive materials. This is especially dangerous in lithium-ion batteries, where a short circuit can lead to serious hazards such as fires, threatening personal safety and property. Existing exposed studs cannot provide an effective seal, creating a direct conductive path between the battery's interior and the external environment, increasing the risk of external short circuits.

[0003] Therefore, there is an urgent need for a self-sealing terminal. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this application provides a self-sealing terminal that enables stable power transmission and protects the studs, preventing short circuit risks caused by exposed studs.

[0006] The self-sealing terminal provided in this application includes a housing, a stud, a first conductor, a second conductor, a wire harness, a housing fastening assembly, and a wire harness fixing assembly. The housing includes a horizontal sleeve and a vertical sleeve, both in a "T" shape. The stud passes through the housing. The first conductor passes through the stud and is located within the vertical sleeve of the housing. The second conductor passes through the first conductor and is located within the horizontal sleeve of the housing; the first and second conductors are perpendicularly arranged within the housing. The wire harness is disposed on the second conductor. The housing fastening assembly is sleeved on the end of the stud and, together with the housing, encloses the stud. The wire harness fixing assembly is disposed on the horizontal sleeve of the housing and sleeved on the wire harness, and is used to fix the wire harness to the housing.

[0007] In some embodiments, it further includes an insulating base disposed at the bottom end of the stud.

[0008] In some embodiments, the stud includes: a stud end face that mates with the first conductor; and a connecting hole for connection to a conductive component.

[0009] In some embodiments, the first conductor includes: an inner through-face that engages with the threaded stud; an outer connecting face that fits against the second conductor; and a conductor end face that fits against the end face of the stud.

[0010] In some embodiments, the second conductor includes: a through groove that fits against the outer connecting surface of the first conductor; and an embedding groove in which the wire harness is located.

[0011] In some embodiments, the wire harness includes: a wire core embedded in the embedding groove of the second conductor; and an insulation layer wrapped around the outside of the wire core.

[0012] In some embodiments, the housing fastening assembly includes: a top cover disposed at one end of the stud away from the insulating base; a nut disposed on the stud and threadedly engaged with the stud, the top cover being located outside the nut; a first sealing ring disposed on the vertical sleeve of the housing and near the nut; and a second sealing ring disposed on the vertical sleeve of the housing and near the insulating base, the first sealing ring and the second sealing ring being symmetrically arranged.

[0013] In some embodiments, the wire harness fixing assembly includes: an insulating sleeve disposed between the horizontal sleeve of the housing and the second conductor; a third sealing ring disposed on the horizontal sleeve of the housing; and an end cap disposed at one end of the insulating sleeve and in contact with the third sealing ring, the end cap having a circular through hole in which the wire harness is accommodated.

[0014] In some embodiments, the outer casing is a plastic casing.

[0015] In some embodiments, the terminal is located on the battery cover.

[0016] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects: This application provides a self-sealing terminal that enables stable power transmission and protects the stud from short-circuit risks due to stud exposure. A first conductor passes through the stud, achieving tight electrical contact via threads. A second conductor is sleeved on the first conductor, with the wire harness embedded within it. Current is sequentially conducted from the stud to the first conductor, then to the second conductor, and finally to the wire harness, thus achieving current transmission from the stud to the wire harness. A housing fastening assembly screws onto the top of the stud, shielding the exposed portion and ensuring a tight connection between the stud and the housing. The wire harness fixing assembly effectively seals the connection between the housing and the wire harness, preventing liquids and gases from entering the terminal, thereby protecting the stud from damage, improving terminal reliability, and preventing short-circuit risks due to stud exposure.

[0017] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the self-sealing terminal according to some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the first conductor and the second conductor in some embodiments of this application; Figure 3 Exploded views of the first and second conductors in some embodiments of this application; Figure 4 This is a schematic diagram of the overall internal structure of the terminals in some embodiments of this application; Figure 5 This is a schematic diagram of the planar structure of the first conductor and the second conductor in some embodiments of this application.

[0019] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1. Outer shell; 2. Stud; 21. Stud end face; 22. Connecting hole; 3. First conductor; 31. Inner penetrating surface; 32. Outer connecting surface; 33. Conductor end face; 4. Second conductor; 41. Through-hole; 42. Embedded hole; 5. Wire harness; 51. Wire core; 52. Insulation layer; 6. Insulating base; 7. Housing fastening assembly; 71. Top cover; 72. Nut; 73. First sealing ring; 74. Second sealing ring; 8. Wire harness fixing assembly; 81. Insulating sleeve; 82. Third sealing ring; 83. End cap; 9. Battery cover. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0022] The following reference Figures 1 to 5 This application describes a self-sealing terminal provided according to some embodiments.

[0023] like Figure 1 , Figure 2 As shown, a self-sealing terminal according to some embodiments of this application includes a housing 1, a stud 2, a first conductor 3, a second conductor 4, a wire harness 5, a housing fastening assembly 7, and a wire harness fixing assembly 8. The housing 1 includes a horizontal sleeve and a vertical sleeve, and is T-shaped. The stud 2 passes through the housing 1. The first conductor 3 passes through the stud 2 and is located within the vertical sleeve of the housing 1. The second conductor 4 passes through the first conductor 3 and is located within the horizontal sleeve of the housing 1. The first conductor 3 and the second conductor 4 are vertically arranged within the housing 1. The wire harness 5 is disposed on the second conductor 4. The housing fastening assembly 7 is sleeved on the end of the stud 2 and together with the housing 1, wraps around the stud 2. The wire harness fixing assembly 8 is disposed on the horizontal sleeve of the housing 1 and sleeved on the wire harness 5, and is used to fix the wire harness 5 to the housing 1.

[0024] In this embodiment, the first conductor 3 passes through the stud 2, and the first conductor 3 and the stud 2 achieve a tight electrical contact through threads. The second conductor 4 is sleeved on the first conductor 3, and the wire harness 5 is embedded in the second conductor 4. The current is conducted sequentially through the stud 2 to the first conductor 3, then from the first conductor 3 to the second conductor 4, and finally from the second conductor 4 to the wire harness 5, realizing the current transmission from the stud 2 to the wire harness 5. The housing fastening assembly 7 is screwed onto the top of the stud 2 to shield the exposed part of the top of the stud 2 and ensure the tightness of the connection between the stud 2 and the housing 1. The wire harness fixing assembly 8 effectively seals the connection between the housing 1 and the wire harness 5 to prevent liquids, gases, etc. from entering the terminal, thereby protecting the stud 2 from damage and improving the reliability of the terminal.

[0025] In some possible embodiments, such as Figure 1 As shown, it also includes: an insulating base 6, which is set at the bottom end of the stud 2.

[0026] In this embodiment, the stud 2 is energized and used to transmit current. The insulating base 6 is located at the bottom of the stud 2, which can effectively isolate the stud 2 from the battery casing 1, prevent current leakage, avoid short circuits, electric shocks and other safety accidents, and ensure the electrical safety of the terminal.

[0027] In some possible embodiments, such as Figure 4 As shown, the stud 2 includes: a stud end face 21, which mates with the first conductor 3; and a connecting hole 22, which connects with the conductive component; the first conductor 3 includes: an inner through surface 31, which mates with the thread of the stud 2; an outer connecting surface 32, which fits against the second conductor 4; and a conductor end face 33, which fits against the stud end face 21; the second conductor 4 includes: a through groove 41, which fits against the outer connecting surface 32 of the first conductor 3; and an embedding groove 42, in which the wire harness 5 is located.

[0028] In this embodiment, the stud 2 passes through the outer casing 1, with the connection hole 22 of the stud 2 facing the direction of connection to the battery's internal conductive busbar. By rotating the first conductor 3, the inner through surface 31 of the first conductor 3 engages with the thread of the stud 2, causing the first conductor 3 to move along the stud 2 until the conductor end face 33 of the first conductor 3 is in contact with the end face 21 of the stud. The preload of the thread ensures a good mechanical connection and a stable electrical connection between the first conductor 3 and the stud 2. By fitting the through groove 41 of the second conductor 4 onto the outer connection surface 32 of the first conductor 3, the two are tightly fitted, thereby embedding the wire harness 5 into the embedding groove 42 of the second conductor 4, achieving an electrical connection between the wire harness 5 and the second conductor 4. At this time, the conductive component that needs to be connected to the stud 2 is connected to the connection hole 22 of the stud 2 to achieve an electrical connection.

[0029] In some possible embodiments, such as Figure 4 As shown, the wire harness 5 includes: a wire core 51, which is embedded in the embedding groove 42 of the second conductor 4; and an insulation layer 52, which wraps around the outside of the wire core 51.

[0030] In this embodiment, to ensure the stability of power transmission, when the wire harness 5 is embedded into the embedding groove 42 of the second conductor 4, the insulation layer 52 needs to be stripped first to expose the wire core 51. After the wire core 51 is embedded into the embedding groove 42 of the second conductor 4, the metal surface of the wire core 51 is in direct contact with the metal surface of the embedding groove 42, forming an electrical path. Since metal has good conductivity, current conduction is realized.

[0031] In some possible embodiments, such as Figure 3As shown, the outer casing fastening assembly 7 includes: a top cover 71, disposed at the end of the stud 2 away from the insulating base 6; a nut 72, disposed on the stud 2 and threadedly engaged with the stud 2, with the top cover 71 located outside the nut 72; a first sealing ring 73, disposed on the vertical sleeve of the outer casing 1 and on the side close to the nut 72; and a second sealing ring 74, disposed on the vertical sleeve of the outer casing 1 and on the side close to the insulating base 6, with the first sealing ring 73 and the second sealing ring 74 being symmetrically arranged.

[0032] In this embodiment, the insulating base 6 is installed at the bottom of the stud 2, with the axial direction of the stud 2 perpendicular to the surface of the insulating base 6. The outer shell 1 is fitted onto the stud 2, so that the vertical sleeve of the outer shell 1 mates with the stud 2. Thus, the first sealing ring 73 is installed on the upper surface of the vertical sleeve of the outer shell 1, and the second sealing ring 74 is installed on the lower surface of the vertical sleeve of the outer shell 1. By screwing the nut 72 into the stud 2, the top cover 71 covers the stud 2 and the nut 72, and is in close contact with the outer shell 1. The first sealing ring 73 and the second sealing ring 74 undergo elastic deformation under pressure, filling the gaps between the stud 2 and the vertical sleeve of the outer shell 1, and between the vertical sleeve of the outer shell 1 and the insulating base 6, thereby forming an effective sealing barrier to prevent external liquids, gases, etc. from entering the terminal, and at the same time to prevent the stud 2 from being exposed and posing a risk of short circuit.

[0033] In some possible embodiments, such as Figure 3 As shown, the wire harness fixing assembly 8 includes: an insulating sleeve 81 disposed between the horizontal sleeve of the outer shell 1 and the second conductor 4; a third sealing ring 82 disposed on the horizontal sleeve of the outer shell 1; and an end cap 83 disposed at one end of the insulating sleeve 81 and in contact with the third sealing ring 82. The end cap 83 has a circular through hole in which the wire harness 5 is accommodated.

[0034] In this embodiment, after the wire core 51 is installed in the embedding groove 42 of the second conductor 4, the insulating sleeve 81 is passed through the wire harness 5 and fitted onto the second conductor 4, and the third sealing ring 82 is installed on the horizontal sleeve of the outer shell 1, so that the end cap 83 passes through the wire harness 5 to the outside of the insulating sleeve 81. At this time, by tightening the end cap 83, the third sealing ring 82 is compressed and undergoes elastic deformation, so that the horizontal sleeve of the outer shell 1 is tightly connected to the insulating sleeve 81.

[0035] In some embodiments, the outer casing 1 is a plastic casing.

[0036] In this embodiment, the plastic shell 1 has good electrical insulation properties, which can effectively prevent the conduction of current, avoid unnecessary electrical connection between the internal studs 2 and the external environment, and ensure safe use.

[0037] In some possible embodiments, such as Figure 3 As shown, the terminals are located on the battery cover 9.

[0038] During the operation of this self-sealing terminal, the wire core 51 of the wire harness 5 is embedded into the embedding groove 42 of the second conductor 4. Since the insulation layer 52 needs to be stripped before embedding the wire core 51, exposing the wire core 51, the metal surface of the wire core 51 directly contacts the metal surface of the embedding groove 42, forming an electrical path and achieving a preliminary electrical connection between the wire harness 5 and the second conductor 4. Next, an insulating sleeve 81 is passed through the wire harness 5 and fitted onto the second conductor 4. The insulating sleeve 81 serves as electrical isolation and protection, preventing unnecessary electrical contact between the second conductor 4 and other components, while also protecting the connection point between the wire harness 5 and the second conductor 4. The wire harness 5 with the insulating sleeve 81 installed is then... The bundle 5 and the second conductor 4 assembly are inserted into the housing 1. At this time, the horizontal sleeve of the housing 1 wraps around the outside of the second conductor 4 and the insulating sleeve 81. Then, the first conductor 3 is inserted into the vertical sleeve of the housing 1. By rotating the first conductor 3, its inner through surface 31 engages with the thread of the stud 2. The first conductor 3 moves along the stud 2 until the conductor end face 33 of the first conductor 3 is in contact with the stud end face 21. The preload of the thread ensures a good mechanical connection and a stable electrical connection between the first conductor 3 and the stud 2. At the same time, the outer connecting surface 32 of the first conductor 3 is in close contact with the second conductor 4, ensuring that the current is smoothly conducted from the first conductor 3 to the second conductor 4. The second conductor 4 is used to install the third sealing ring 82 on the horizontal sleeve of the outer casing 1. The end cap 83 is passed through the wire harness 5 to the outside of the insulating sleeve 81 and tightened. The third sealing ring 82 undergoes elastic deformation under pressure, filling the gap between the horizontal sleeve of the outer casing 1 and the insulating sleeve 81, forming a preliminary sealing structure. Then, the first sealing ring 73 and the second sealing ring 74 are installed on the vertical sleeve of the outer casing 1 near the nut 72 and near the insulating base 6, respectively. The pre-assembled assembly is then mounted on the stud 2 that has been installed on the battery cover plate 9, so that the stud 2 passes through the vertical sleeve of the outer casing 1. At this time, the outer casing 1, the first conductor 3, the second conductor 4, the wire harness 5 and the stud 2 are connected. The studs 2 are initially assembled together. The top cover 71 and nut 72 are installed. The nut 72 is screwed into the stud 2. The top cover 71 covers the stud 2 and nut 72 and is in close contact with the outer shell 1. The first sealing ring 73 and the second sealing ring 74 undergo elastic deformation under pressure, filling the gap of the connection surface and forming a complete sealing barrier to prevent the stud 2 from being exposed and thus posing a short circuit risk. When the battery is working, the conductive components inside the battery are connected to the connection hole 22 of the stud 2. At this time, the stud 2 is in a charged state. The current is conducted through the stud 2 to the first conductor 3, and then to the second conductor 4 and the wire harness 5, thereby realizing the transmission of current from the stud 2 to the wire harness 5.

[0039] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A self-sealing terminal, characterized in that, include: The outer shell, including a horizontal shell and a vertical shell, is T-shaped; Studs are inserted into the outer casing; A first conductor is inserted through the stud, and the first conductor is located inside the vertical sleeve of the outer casing; The second conductor passes through the first conductor and is located within the horizontal casing of the outer shell. The first conductor and the second conductor are arranged perpendicularly within the outer shell. The wire harness is disposed on the second conductor; A housing fastening assembly is fitted onto the end of the stud, and together with the housing, encloses the stud. A wire harness fixing assembly is disposed on the horizontal sleeve of the housing and sleeved on the wire harness, the wire harness fixing assembly being used to fix the wire harness on the housing.

2. The self-sealing terminal according to claim 1, characterized in that, Also includes: An insulating base is provided at the bottom end of the stud.

3. The self-sealing terminal according to claim 1, characterized in that, The stud includes: The end face of the stud mates with the first conductor; Connection hole for connecting to conductive components.

4. The self-sealing terminal according to claim 1, characterized in that, The first conductor includes: The inner through-face mates with the threaded stud. The outer connecting surface is in contact with the second conductor; The conductor end face is in contact with the stud end face.

5. The self-sealing terminal according to claim 4, characterized in that, The second conductor includes: A through groove that fits against the outer connecting surface of the first conductor; An embedding slot, in which the wire harness is located.

6. The self-sealing terminal according to claim 5, characterized in that, The wiring harness includes: The wire core is embedded in the embedding groove of the second conductor; An insulating layer is wrapped around the outside of the wire core.

7. The self-sealing terminal according to claim 1, characterized in that, The housing fastening assembly includes: A top cover is disposed at the end of the stud away from the insulating base; A nut is disposed on the stud and threadedly engaged with the stud, and the top cover is located outside the nut; The first sealing ring is disposed on the vertical sleeve of the outer casing, and on the side close to the nut; The second sealing ring is disposed on the vertical sleeve of the outer casing, and on the side close to the insulating base. The first sealing ring and the second sealing ring are symmetrically arranged.

8. The self-sealing terminal according to claim 1, characterized in that, The wire harness fixing assembly includes: An insulating sleeve is disposed between the horizontal sleeve of the outer casing and the second conductor; A third sealing ring is disposed on the horizontal sleeve of the outer casing; An end cap is disposed at one end of the insulating sleeve and contacts the third sealing ring. The end cap has a circular through hole, and the wire harness is accommodated in the circular through hole.

9. The self-sealing terminal according to claim 1, characterized in that: The outer shell is a plastic shell.

10. The self-sealing terminal according to any one of claims 1 to 9, characterized in that: The terminal is located on the battery cover.

Images