High current contact terminal

Abstract

The application discloses a large-current contact terminal, relates to the technical field of electric connectors, and comprises a first terminal body, a second terminal body and a conductive spring, the first terminal body and the second terminal body are connected through a connecting piece, one side of the first terminal body and the second terminal body is mutually adhered, and the other side forms a C-shaped notch for accommodating the conductive spring; the conductive spring has a bending section and a corrugated section, the bending section is integrally formed at two ends of the corrugated section, the bending section is clamped on the first terminal body / second terminal body, the corrugated section abuts against the inner bottom wall of the first terminal body / second terminal body in the vertical direction, and the corrugated section abuts against the inner side wall of the first terminal body / second terminal body in the horizontal direction. The application has the effect of guaranteeing good electric contact performance.

Description

Technical Field

[0001] This application relates to the field of electrical connector technology, and in particular to high-current contact terminals. Background Technology

[0002] In the development of electric vehicles, electrical connectors play a crucial role as key components. With the continuous advancement of electric vehicle technology, the performance requirements for electrical connectors are becoming increasingly stringent. Especially in high-voltage, high-current operating environments, electrical connectors need to reliably transmit electrical energy to ensure the safe and stable operation of electric vehicles. The performance of electrical connectors not only affects the power output of electric vehicles but also relates to the reliability and lifespan of the entire electrical system.

[0003] In the field of high-voltage electrical connections, the demand for high-current contact terminals is increasing. To address the issue of high-current transmission, existing technologies commonly employ two types of current terminals: socket-type and contact-type. Socket-type terminals, used with wire harnesses, are suitable for low-voltage connections; while contact-type terminals, used with copper or aluminum busbars, are more suitable for high-voltage connections. For contact-type terminals, existing high-current contact terminals are mostly manufactured using custom molds and a one-piece stamping process, with their conductive springs featuring a wavy contact area along the mating direction. To fix the conductive springs, previous techniques involved welding the springs to the opposing inner surfaces of two overlapping terminal bodies, thus securing the springs to a certain extent, but this method also has some shortcomings.

[0004] In practical applications, the narrow space for the reed makes both arc welding and ultrasonic welding extremely difficult. This not only demands high levels of skill from workers but also easily leads to inconsistent weld quality. During mass production, this challenging welding process severely impacts production efficiency, hindering efficient batch manufacturing. Furthermore, the high difficulty of the operation keeps production costs high, impeding large-scale product promotion and application. Utility Model Content

[0005] To address the issues of high welding difficulty, welding instability, and reduced welding production efficiency in existing welding processes, this application provides high-current contact terminals.

[0006] The high-current contact terminal provided in this application adopts the following technical solution: A high-current contact terminal includes a first terminal body, a second terminal body, and a conductive spring. The first terminal body and the second terminal body are connected by a connector. One side of the first terminal body and the second terminal body are attached to each other, and the other side forms a C-shaped groove to accommodate the conductive spring. The conductive spring has a bent section and a corrugated section. The bent section is integrally formed at both ends of the corrugated section and is snapped onto the first terminal body / second terminal body. The corrugated section abuts against the inner bottom wall of the first terminal body / second terminal body in the vertical direction and abuts against the inner side wall of the first terminal body / second terminal body in the horizontal direction.

[0007] By adopting the above technical solution, the first terminal body and the second terminal body are connected to form a C-shaped groove to accommodate the conductive spring. The bent section of the conductive spring is snapped onto the terminal body, and the corrugated section abuts against the inner wall of the terminal body, so that the conductive spring is stably assembled, avoiding displacement, improving conductivity and safety, and eliminating the need for welding, thus reducing manufacturing difficulty and cost.

[0008] Optionally, the outer surface of the conductive spring abuts against the C-shaped groove, and the longitudinal cross-section of the conductive spring is U-shaped.

[0009] By adopting the above technical solution, the conductive spring is stably assembled between the first terminal body and the second terminal body, avoiding displacement, improving conductive contact performance and safety, and achieving stable assembly without welding, reducing manufacturing difficulty and cost, and facilitating efficient mass production.

[0010] Optionally, the first terminal body and the second terminal body have the same shape and the same size specifications.

[0011] By adopting the above technical solution, the versatility of the first terminal body and the second terminal body is improved, the cost caused by differentiation in the manufacturing process is reduced, production management and mold design are facilitated, efficient mass production is promoted, and manufacturing costs are reduced.

[0012] Optionally, the connector includes a bolt and a nut, the bolt being threaded through the first terminal body, the second terminal body, and the nut in sequence.

[0013] By adopting the above technical solution, the first terminal body and the second terminal body are connected by bolts and nuts to achieve a stable connection between the two, ensuring the structural stability of the high-current contact terminal, and enabling the conductive spring to be in a stable assembly environment, thereby helping to improve conductivity and safety.

[0014] Optionally, a trapezoidal column is formed at one end of the first terminal body and the second terminal body that are separated from each other. The trapezoidal column is integrally formed with the first terminal body / second terminal body, and the trapezoidal column is in contact with the bending section.

[0015] By adopting the above technical solution, the conductive spring is more securely assembled, further improving conductivity and safety, and preventing the conductive spring from shifting.

[0016] Optionally, a chamfered surface is formed on the outer surface of the first terminal body and the second terminal body, and the end of the bent section is engaged with the chamfered surface.

[0017] By adopting the above technical solution, the conductive spring can be more securely assembled on the first terminal body and the second terminal body without displacement, which improves the safety of conductive contact performance. At the same time, it avoids the high difficulty and high cost problems caused by welding methods in the prior art, which is conducive to efficient mass production.

[0018] Optionally, the angle formed between the bent section and the outer surface of the first terminal body / second terminal body is 25°~40°.

[0019] By adopting the above technical solution, the conductive spring can be more securely attached to the first terminal body or the second terminal body, further improving the stability and conductivity of the high-current contact terminal.

[0020] Optionally, the corrugated section of the conductive spring is a wavy curved surface structure, which makes contact with at least three points on the inner bottom surface of the first terminal body / second terminal body.

[0021] By adopting the above technical solution, the contact area between the conductive spring and the terminal body can be further increased, improving conductivity and stability, while avoiding problems such as overheating caused by poor contact, thus enhancing safety performance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The bent section of the conductive spring is snapped onto the first terminal body or the second terminal body, and the corrugated section abuts against the inner bottom wall and the inner side wall, ensuring a stable installation without displacement and improving the safety of the conductive contact. 2. Breakthrough in existing welding techniques: Springs can be stably assembled into the terminal body without the need for welding, reducing welding difficulty and production costs, and facilitating efficient mass production; 3. Meets the high current transmission requirements in high-voltage electrical connection fields, reliably transmits electrical energy, and ensures the safe and stable operation of electric vehicles. Attached Figure Description

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

[0024] Figure 1 This application presents a schematic diagram illustrating the structure of the conductive spring inside the aluminum busbar connected to the high-current contact terminal.

[0025] Figure 2 This is an exploded view of a high-current contact terminal as shown in this application.

[0026] Figure 3 This application presents a schematic diagram illustrating the connection between the first terminal body / second terminal body and the conductive spring of a high-current contact terminal.

[0027] Figure 4 This is a structural schematic diagram of the first terminal body / second terminal body shown in this application.

[0028] Reference numerals: 1. First terminal body; 2. Second terminal body; 3. Conductive spring; 4. Connector; 31. Bending section; 32. Corrugated section; 5. C-shaped groove; 41. Bolt; 42. Nut; 6. Trapezoidal column; 7. Beveled surface. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] This application discloses high-current contact terminals.

[0031] Reference Figure 1 It includes a first terminal body 1, a second terminal body 2, a conductive spring 3, and a connector 4. The first terminal body 1 and the second terminal body 2 are connected by the connector 4. One side of the two are attached to each other, and the other side forms a C-shaped groove 5 to accommodate the conductive spring 3. This structural design allows the conductive spring 3 to be stably placed in a specific area, avoiding shaking or displacement during use, thereby ensuring the stability and safety of the conductivity.

[0032] See Figure 3 and Figure 4As shown, the first terminal body 1 and the second terminal body 2 have the same shape and size. The symmetrical structure facilitates manufacturing and reduces the cost and difficulty of mold development. Grooves are provided on their opposing inner surfaces. These grooves act like "small rooms" specifically designed for the conductive spring 3, effectively accommodating it and ensuring a stable fit without displacement, thus improving the safety of conductivity. Trapezoidal pillars 6 are formed at the separated ends of both the first terminal body 1 and the second terminal body 2. These pillars are integrally formed with either the first terminal body 1 or the second terminal body 2, ensuring structural integrity and stability. The trapezoidal pillars 6 contact the bent section 31 of the conductive spring 3 (mentioned later), providing support and positioning. Furthermore, beveled surfaces 7 are formed on the outer surfaces of both the first terminal body 1 and the second terminal body 2. These beveled surfaces 7 serve as the "landing point" for the end of the bent section 31 of the conductive spring 3. The end of the bent section 31 engages with the beveled surface 7, further enhancing the connection stability between the conductive spring 3 and the terminal body. The angle formed between the bent section 31 and the outer surface of the first terminal body 1 or the second terminal body 2 is 25°~40°. This angle range can ensure that there is sufficient clamping force between the bent section 31 and the terminal body, and can also avoid affecting the installation and conductivity of the conductive spring 3 due to excessive or insufficient angle.

[0033] See Figure 3 As shown, the conductive spring 3 has a bent section 31 and a corrugated section 32. The bent section 31 is integrally formed at both ends of the corrugated section 32. This integral forming method ensures the overall strength and conductivity of the conductive spring 3. The longitudinal cross-section of the conductive spring 3 is U-shaped, and its outer surface abuts against the C-shaped slot 5. The U-shaped design allows the conductive spring 3 to better adapt to the shape of the C-shaped slot 5, increasing the contact area with the C-shaped slot 5 and thus improving conductivity. The bent section 31 is snapped onto the first terminal body 1 or the second terminal body 2. For example, the bent section 31 can be snapped onto the trapezoidal column 6 and the beveled surface 7 through its own elastic deformation to achieve a stable connection. The corrugated section 32 abuts against the inner bottom wall of the first terminal body 1 or the second terminal body 2 in the vertical direction and against the inner side wall of the first terminal body 1 or the second terminal body 2 in the horizontal direction. The corrugated section 32 has a wavy curved surface structure, and it makes contact with at least three points on the inner bottom surface of the first terminal body 1 or the second terminal body 2. This multi-point contact method greatly increases the contact area and contact stability between the conductive spring 3 and the terminal body, effectively reducing contact resistance and improving conductivity. For example, when a large current passes through, more contact points act like multiple "highways," allowing the current to flow more smoothly, reducing energy loss and heat generation, and ensuring the safe and reliable operation of the high-current contact terminal in high-voltage, high-current operating environments.

[0034] See Figure 2 As shown, the connector 4 includes a bolt 41 and a nut 42. The bolt 41 passes sequentially through the first terminal body 1, the second terminal body 2, and the nut 42, forming a threaded connection. Bolt 41 and nut 42 are a common and reliable connection method. By tightening the nut 42, the first terminal body 1 and the second terminal body 2 can be tightly connected together, providing a stable clamping force for the conductive spring 3 and ensuring the structural stability of the entire high-current contact terminal. Of course, besides connectors 4 such as bolts 41 and nut 42, in practical applications, similar connectors 4 such as clips and rivets can also be used to connect the first terminal body 1 and the second terminal body 2, as long as the requirements of a stable connection and ease of installation and disassembly are met.

[0035] The implementation principle of the high-current contact terminal in this application embodiment is as follows: First, this application abandons the welding method of the conductive spring 3 in the prior art. The groove, trapezoidal column 6, oblique surface 7 and other structures of the first terminal body 1 and the second terminal body 2 cooperate with the bent section 31 and corrugated section 32 of the conductive spring 3 to achieve a stable installation of the conductive spring 3. The stability of the conductive spring 3 can be guaranteed without welding, which reduces the manufacturing difficulty and cost and improves the production efficiency. At the same time, the multi-point contact and large-area contact between the conductive spring 3 and the terminal body effectively improves the safety and stability of the conductivity performance, avoids the safety hazards caused by poor conductivity, and provides a strong guarantee for the reliable transmission of electrical energy of electric vehicles in the high-voltage and high-current working environment.

[0036] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high current contact terminal, characterized by: The device includes a first terminal body (1), a second terminal body (2), and a conductive spring (3). The first terminal body (1) and the second terminal body (2) are connected by a connector (4). The first terminal body (1) and the second terminal body (2) are attached to each other on one side, and a C-shaped groove (5) for accommodating the conductive spring (3) is formed on the other side. The conductive spring (3) has a bent section (31) and a corrugated section (32). The bent section (31) is integrally formed at both ends of the corrugated section (32). The bent section (31) is snapped onto the first terminal body (1) / second terminal body (2). The corrugated section (32) abuts against the inner bottom wall of the first terminal body (1) / second terminal body (2) in the vertical direction and abuts against the inner side wall of the first terminal body (1) / second terminal body (2) in the horizontal direction.

2. The high current contact terminal of claim 1, wherein: The outer surface of the conductive spring (3) abuts against the C-shaped groove (5), and the longitudinal cross section of the conductive spring (3) is U-shaped.

3. The high current contact terminal of claim 1, wherein: The first terminal body (1) and the second terminal body (2) have the same shape and the same size specifications.

4. The high current contact terminal of claim 1, wherein: The connector (4) includes a bolt (41) and a nut (42), wherein the bolt (41) passes through the first terminal body (1), the second terminal body (2) and the nut (42) in sequence for thread engagement.

5. The high current contact terminal of claim 1, wherein: The first terminal body (1) and the second terminal body (2) are separated from each other by a trapezoidal column (6). The trapezoidal column (6) and the first terminal body (1) / second terminal body (2) are integrally formed. The trapezoidal column (6) is in contact with the bending section (31).

6. The high current contact terminal of claim 1, wherein: A chamfered surface (7) is formed on the outer surface of the first terminal body (1) and the second terminal body (2), and the end of the bent section (31) is engaged with the chamfered surface (7).

7. The high-current contact terminal according to claim 1, characterized in that: The angle formed by the bending section (31) and the outer surfaces of the first terminal body (1) / second terminal body (2) is 25°~40°.

8. The high current contact terminal of claim 1, wherein: The corrugated section (32) of the conductive spring (3) is a wavy curved surface structure, which makes contact with the inner bottom surface of the first terminal body (1) / second terminal body (2) at least 3 points.

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