Connector device capable of reducing connection space

Abstract

The utility model relates to a connector device capable of reducing connection space, and belongs to the technical field of battery connectors. The device comprises a wiring terminal, a conductive nut and a pressing rivet nut, a bent strip main body of the wiring terminal is laterally provided with a wire interface connected with a first wire, the bottom of the wiring terminal fixes a fuse and the pressing rivet nut through a bolt, and the pressing rivet nut is connected with a second wire. Through the integrated design of the bending structure of the wiring terminal and the fuse and the nut, the vertical layout of the two wires is realized, and the occupation of the transverse space is reduced by more than 50%. The device solves the problem of insufficient wiring space of the upper sealing cover of the sodium battery due to limitation of the bending radius of the lead, improves the space utilization rate and the connection reliability, and reduces the risk of short circuit through partition protection of the insulating layer.

Description

Technical Field

[0001] This utility model belongs to the field of battery connector technology, and specifically relates to a connector device that reduces connection space. Background Technology

[0002] In the field of sodium-ion battery module integration, optimizing the spatial layout of battery connectors has always been a technical challenge. Traditional terminal blocks often employ a parallel double-wire crimping structure, such as the disclosed technology CN118589259B. Limited by the bending radius and minimum length requirements of the wires, this often results in excessive lateral space occupancy. In narrow areas such as the battery cover, this layout encroaches on the installation space of other electrical components, making it difficult to meet the demands of high-density integration. While existing technologies have attempted to fix wire harnesses using bracket recesses, spatial constraints remain, and separate fuse installations can easily lead to increased contact resistance and positioning deviations.

[0003] Further research revealed that traditional metal connectors are prone to oxidation failure under high-temperature and vibration environments. While modular design improves maintenance convenience, it does not solve the space compression problem of dual-output circuits. Existing crimping technology can improve high-current transmission capabilities, but parallel wiring still results in low space utilization, and separate fuse installation leads to insufficient current path stability.

[0004] Therefore, there is an urgent need to develop a new type of connector device that, through innovative three-dimensional layout structure, can achieve a breakthrough reduction in space occupation while ensuring stable current transmission, and integrate fuse function to improve system reliability. Utility Model Content

[0005] The purpose of this utility model is to provide a connector device that reduces connection space. By optimizing the terminal structure and the integrated design of the fuse and the rivet nut, it solves the problem of insufficient layout space caused by the parallel wire output and bending radius limitation of the cover of sodium battery. It realizes the vertical compact layout of dual wires, significantly reduces the lateral space occupation, and improves the connection reliability and insulation safety, thus meeting the requirements of highly integrated battery assembly.

[0006] A connector device that reduces connection space includes a terminal block, which is bolted to a conductive nut. The terminal block includes a bent elongated body and a wire interface protruding laterally along the elongated body. The wire interface connects to a first wire, the other end of which is welded to a perforated metal ring. A fuse is bolted to the bottom of the elongated body, and a rivet nut is bolted to the bottom of the fuse. The rivet nut has a nut wire interface, which connects to a second wire. The other end of the second wire connects to a perforated socket ring. The bent elongated body and the protruding wire interface form a three-dimensional layout, optimizing the traditional parallel output to a vertical dual-path output, reducing lateral space occupation by more than 50%. This solves the problem of insufficient layout space in sodium battery caps due to limitations in wire bending radius and length, adapting to the highly integrated assembly requirements inside the battery. When the connector is in operation, the conductive nut connects to the external load to supply power to the external electrical appliance, and the sleeve connects to the battery module to draw power. The current flows from the battery module to the fuse and the terminal block, which are divided into two branches. One branch supplies power to the external electrical appliance through the conductive nut, and the other branch supplies power to the internal protection board of the battery through the first wire and the metal ring.

[0007] A connector device that reduces connection space includes a crimp nut with a threaded center hole and a connecting surface. A fuse is integrally formed with the connecting surface via mechanical crimping or welding, and then secured to the terminal block with bolts. By mechanically crimping / welding the fuse and crimp nut into a single conductive structure, the contact resistance is reduced to below 0.5mΩ, avoiding poor contact caused by separate assemblies. This eliminates the risk of positioning deviation when installing a fuse individually, ensuring stable current transmission.

[0008] A connector device that reduces connection space features a fuse in close contact with the connection surface via a conductive material, and an insulating layer added to the press-fit nut except for the threaded section, center hole, and connection surface. The conductive material, such as copper alloy, forms a partitioned protection system with the insulating ceramic / high-temperature resistant plastic contact area, significantly reducing the risk of short circuits. This design simultaneously meets conductivity and high-voltage insulation requirements in a battery-sealed environment.

[0009] A connector device that reduces connection space features an insulation layer made of ceramic or high-temperature resistant plastic to improve insulation and high-temperature resistance. The ceramic / high-temperature resistant plastic insulation layer maintains an insulation strength of ≥20kV / mm even at 125°C, preventing insulation failure due to thermal expansion. It also addresses temperature fluctuations during the charging and discharging of sodium batteries, ensuring long-term safety.

[0010] A connector device that reduces connection space includes a first conductor made of copper or aluminum wire, with the copper wire having a cross-sectional area ≥2.5mm² and the aluminum wire having a cross-sectional area ≥4mm². The cross-sectional area design of the copper wire (≥2.5mm²) and the aluminum wire (≥4mm²) increases current carrying capacity by 30% while maintaining crimp strength, balancing the high-current transmission requirements, high-power characteristics of sodium batteries, and mechanical reliability.

[0011] A connector device that reduces connection space, wherein the fuse has a fusing current value of 1.5 to 2 times the nominal current of the battery, and the elongated body has an upper half, wherein the angle α between the long side axis of the upper half and the axial center line of the wire interface is equal to 90°.

[0012] A connector device that reduces connection space includes a conductive nut comprising an outer body and a mounting platform. The outer body has an inner nut section for connecting external electrical appliances, and the mounting platform has a fixing threaded hole on its side for fixing terminal blocks.

[0013] A connector device that reduces connection space has a long strip body with two vertically bent sections, each of which is rounded. The two bent sections reduce the vertical distance between the terminals, thus reducing space requirements. Simultaneously, they fit snugly against the external ports, making the overall structure of the connector device more compact.

[0014] A connector device that reduces connection space has an observation hole on the side of the wire interface for observing whether the end of the wire is fully inserted into the wire interface.

[0015] The advantages of this utility model are as follows: the bending structure of the terminal block and the dual-path vertical layout design significantly reduce the lateral space occupied by more than 50%, effectively solving the problem of insufficient wiring space on the cover of sodium batteries; the integrated molding process (pressing / welding) of the fuse and the rivet nut ensures a significant reduction in contact resistance and improves conductivity stability; the wire pressing process combined with the observation hole design ensures connection reliability and avoids the risk of loosening; the partitioned protection and high temperature resistance of the insulation layer reduce the risk of short circuit and thermal failure; at the same time, it supports flexible adaptation of copper wire and aluminum wire to meet the compact and high-safety connection requirements of various battery models. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0018] Figure 2 This is a side view of the entire utility model.

[0019] Figure 3 This is a schematic diagram of the press-fit nut of this utility model.

[0020] Figure 4 This is a schematic diagram of the conductive nut and terminal block of this utility model.

[0021] Figure 5 This is a schematic diagram of the conductive nut of this utility model.

[0022] Figure descriptions: 1-Terminal, 2-Conductive nut, 5-Pressure nut, 11-Long strip body, 11a-Upper half, 12-Wire interface, 13-Vertical bending section, 21-External body, 22-Mounting platform, 23-Fixing threaded hole, 31-First wire, 32-Second wire, 33-Metal ring, 34-Sleeve ring, 4-Fuse, 51-Nut wire interface, 52-Threaded section center hole, 53-Connecting surface. Detailed Implementation

[0023] 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.

[0024] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1:

[0026] Structural composition and connection relationships

[0027] Terminal 1 and conductive nut 2: Refer to the attached document. Figure 1 As shown, attached Figure 4 Appendix Figure 5 As shown, the terminal block 1 is made of copper alloy, and its main body is a bent strip 11. The bent section 13 is rounded to reduce the vertical space occupied. The strip 11 is fixed to the mounting platform 22 of the conductive nut 2 by bolts. The outer body 21 of the conductive nut 2 is provided with an internal threaded hole for connecting an external load.

[0028] Wire interface 12 is connected to the wire

[0029] See attached document Figure 1 Appendix Figure 3 Appendix Figure 4 As shown, the elongated main body 11 has a side-protruding wire interface 12. The wire interface 12 has an observation hole on its side for visually confirming the insertion depth of the first wire 31. The first wire 31 is made of copper wire (cross-sectional area ≥ 2.5 mm²), and after stripping 6-8 mm of insulation, it is inserted into the wire interface 12 and fixed by a crimping process. A metal ring 33 is welded to the end to connect to the internal protection plate of the battery. The second wire 32 is also made of copper wire (cross-sectional area ≥ 2.5 mm²), and is connected via the nut wire interface 51 of the crimp nut 5. A sleeve ring 34 is attached to the end to connect to the battery module for power supply.

[0030] Fuse 4 and rivet nut 5

[0031] See attached document Figure 1 Appendix Figure 2 Appendix Figure 4 As shown, the fusing current of fuse 4 is 1.5 to 2 times the nominal current of the battery. The long side axis of the upper half 11a of the main body 11 is perpendicular to the axial center line of the wire interface 12 (angle α = 90°). Fuse 4 is integrally formed with the connecting surface 53 of the rivet nut 5 through mechanical crimping or welding, forming a low contact resistance structure. In addition to the threaded section and the connecting surface 53, the outer surface of the rivet nut 5 is provided with a ceramic or high-temperature resistant plastic insulating layer.

[0032] Space optimization and layout

[0033] See attached document Figure 1 Appendix Figure 4 As shown, the vertical bend 13 of the elongated main body 11 and the lateral protrusion of the wire interface 12 form a three-dimensional layout, optimizing the traditional parallel output into a vertical dual-path output, reducing the lateral space occupied by more than 50%. The vertical distribution of the wire interface 12 and the rivet nut 5 fits the narrow space boundary of the sodium battery cover, meeting the requirements of high integration.

[0034] Assembly and Inspection

[0035] Wire crimping: After stripping the wire, use a copper wire brush (copper wire diameter 0.1~0.3mm, hardness HRB50-60) to clean the conductor surface in one direction. After crimping, ensure that the first wire 31 is in close contact with the terminal 1.

[0036] Fuse installation: Refer to the attached document. Figure 1 As shown, the integrated structure of fuse 4 and press-fit nut 5 is fixed to terminal 1 by bolts, and the contact resistance is ≤0.5mΩ.

[0037] Insulation layer verification: The insulation layer material must meet the high temperature resistance requirements (such as ceramic or high temperature resistant plastic) to ensure the insulation safety of the battery in a closed environment.

[0038] Operating principle

[0039] See attached document Figure 1 As shown, current flows from the battery module through the sleeve ring 34 into the second conductor 32, and then splits into two paths through the crimp nut 5 and fuse 4: the first branch current flows through fuse 4 and terminal 1 to the conductive nut 2, supplying power to external electrical appliances. The second branch current supplies power to the battery's internal protection board through terminal 1, the first conductor 31, and the metal ring 33. The vertical layout avoids interference between the two conductors, solving the layout problem caused by the bending radius limitation of the conductors on the sodium battery cover.

[0040] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the present utility model, and are not intended to limit the implementation methods of the present utility model in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the present utility model, but these should still be regarded as the same technology or embodiment as the present utility model.

[0042] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A connector device that reduces connection space, characterized in that: The device includes a terminal block (1), which is fixed to a conductive nut (2) by bolts. The terminal block (1) includes a bent elongated body (11) and a wire interface (12) that protrudes laterally along the elongated body (11). The wire interface (12) is connected to a first wire (31). The other end of the first wire (31) is welded with a perforated metal ring (33). The bottom of the elongated body (11) is fixed to a fuse (4) by bolts. The bottom of the fuse (4) is connected to a press-fit nut (5) by bolts. The press-fit nut (5) is provided with a nut wire interface (51). The nut wire interface (51) is connected to a second wire (32). The other end of the second wire (32) is connected to a perforated sleeve ring (34).

2. The connector device for reducing connection space according to claim 1, characterized in that: The press-fit nut (5) has a threaded section center hole (52) and a connecting surface (53). The fuse (4) is integrally formed with the connecting surface (53) by mechanical pressing or welding process, and then fixed to the terminal block (1) by bolts.

3. The connector device for reducing connection space according to claim 2, characterized in that: The fuse (4) and the connecting surface (53) are in close contact through a conductive material, and the rivet nut (5) is provided with an insulating layer except for the threaded section center hole (52) and the connecting surface (53).

4. A connector device for reducing connection space according to claim 3, characterized in that: The insulation layer is made of ceramic or high-temperature resistant plastic to improve insulation and high-temperature resistance.

5. A connector device for reducing connection space according to claim 1, characterized in that: The first conductor (31) uses copper or aluminum wire conductors inside, with a copper wire cross-sectional area ≥2.5mm² and an aluminum wire cross-sectional area ≥4mm².

6. A connector device for reducing connection space according to claim 1, characterized in that: The fuse (4) has a fusing current value of 1.5 to 2 times the nominal current of the battery. The long strip body (11) has an upper half (11a). The angle α between the long side axis of the upper half (11a) and the axial center line of the wire interface (12) is equal to 90°.

7. A connector device for reducing connection space according to claim 1, characterized in that: The conductive nut (2) includes an external body (21) and an installation platform (22). The external body (21) has an inner nut section for connecting external electrical appliances. The installation platform (22) has a fixing threaded hole (23) on its side for fixing the wiring terminal.

8. A connector device for reducing connection space according to claim 1, characterized in that: The long strip body (11) has two vertical bending sections (13), each bending section (13) being rounded.

9. A connector device for reducing connection space according to claim 1, characterized in that: The wire interface (12) has an observation hole on its side for observing whether the end of the wire is fully inserted into the wire interface (12).

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