A large current flat terminal

Abstract

This application discloses a high-current flat terminal block, comprising: a conductive element and a protective element disposed on the outside of the conductive element. The conductive element includes two opposing conductive plates, with a insertion space formed between the two conductive plates for inserting a copper busbar for electrical connection. The protective element has a limiting portion that can contact the copper busbar to limit the length of the copper busbar inserted into the conductive element. This application precisely limits the length of the copper busbar inserted into the conductive element by using the limiting portion on the protective element, avoiding the problem of deformation of the internal conductive structure of the conductive element due to excessive insertion of the copper busbar, thus improving the stability and safety of the terminal block.

Description

Technical Field

[0001] This application relates to the technical field of flat terminals, and more particularly to a high-current flat terminal. Background Technology

[0002] In numerous fields such as power transmission and distribution, and electrical equipment connection, the plug-in connection method between high-current flat terminals and copper busbars has been widely used due to its significant advantages, including stable connection, good conductivity, and ease of installation and maintenance. High-current flat terminals are typically made of highly conductive and high-strength metal materials, and their structural design aims to effectively reduce resistance and energy loss when subjected to high currents, while ensuring the reliability and stability of the connection. Copper busbars, as a commonly used conductive component, possess excellent conductivity, thermal conductivity, and good mechanical properties, playing a crucial role in high-current transmission scenarios.

[0003] However, in actual insertion operations, existing high-current flat terminals present a pressing technical problem. Due to the lack of an effective limiting structure or precise insertion depth control mechanism, over-insertion of the copper busbar is highly likely when operators insert it into the high-current flat terminal. Over-insertion can cause deformation of the internal conductive structure of the terminal, resulting in abnormal changes in the contact area and increased contact resistance. Increased contact resistance leads to more heat generation when current flows, not only wasting energy but also potentially causing insulation material aging and performance degradation due to localized overheating, and even fires and other safety accidents, seriously threatening the safe and stable operation of the electrical system. Utility Model Content

[0004] The purpose of this application is to provide a high-current flat terminal block that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On one hand, a high-current flat plug terminal is provided, comprising: a conductive element and a protective element disposed on the outside of the conductive element. The conductive element includes two opposing conductive plates, and a plugging space is formed between the two conductive plates for inserting a copper busbar for electrical connection. The protective element is provided with a limiting part, which can contact the copper busbar to limit the length of the copper busbar inserted into the conductive element.

[0007] Furthermore, the protective component includes two opposing protective plates, each of which is disposed on the outer side of the two conductive plates. Both sides of the two protective plates are connected by connecting portions, and the limiting portion extends to the left from one of the connecting portions.

[0008] Furthermore, the center of the limiting part is hollowed out.

[0009] Furthermore, each of the two conductive plates has a connecting part on both sides, and the two connecting parts are respectively provided on the inner side of the two connecting parts.

[0010] Furthermore, the vertical projection of the connecting portion covers the connecting portion.

[0011] Furthermore, the protective component is riveted to the outside of the conductive component, or the protective component is fixed to the outside of the conductive component by screws.

[0012] Furthermore, the conductive plate includes a main body and a plurality of elastic plug-in portions spaced apart at one end of the main body. The main body is connected and fixed to the protective member, and the elastic plug-in portions are electrically connected to the copper busbar.

[0013] Furthermore, the elastic plug portion is arc-shaped, and a portion of the plugging space is formed between two opposite elastic plug portions. The gap in the plugging space decreases from left to right and then increases again. The minimum gap in the plugging space is 1.8 mm, and the maximum gap in the plugging space is 7.9 mm.

[0014] Furthermore, the protective plate includes a fixing part located on the outside of the main body and a supporting part located on the outside of the elastic insertion part, and a reinforcing rib is provided between the fixing part and the supporting part.

[0015] Furthermore, the protective component is made of stainless steel, and the conductive component is made of copper.

[0016] The beneficial effects of this application are as follows: By precisely limiting the length of the copper busbar inserted into the conductive component through the limiting part on the protective component, the problem of deformation of the internal conductive structure of the conductive component due to excessive insertion of the copper busbar is avoided. This allows the contact area between the conductive component and the copper busbar to remain within a stable and appropriate range, effectively reducing contact resistance. The reduction in contact resistance means a significant reduction in the heat generated when current flows, which not only improves energy utilization efficiency and reduces energy loss, but also greatly reduces the risk of safety accidents such as aging of insulation materials, performance degradation, or even fires caused by local overheating, thus strongly ensuring the safe and stable operation of the electrical system. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the high-current flat terminal block described in the embodiments of this application;

[0019] Figure 2This is an exploded view of the high-current flat terminal block described in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the protective component described in the embodiments of this application;

[0021] Figure 4 This is a front view of the conductive element described in an embodiment of this application.

[0022] In the figure: 1. Conductive component; 101. Insertion space; 102. Conductive plate; 1021. Main body; 1022. Elastic insertion part; 1023. Connecting part; 2. Protective component; 201. Limiting part; 202. Protective plate; 203. Reinforcing rib; 2021. Fixing part; 2022. Supporting part; 2023. Connecting part. Detailed Implementation

[0023] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] like Figures 1-4As shown, this embodiment provides a high-current flat plug terminal, including: a conductive element 1 and a protective element 2 disposed on the outside of the conductive element 1. The conductive element 1 includes two opposing conductive plates 102, and a plugging space 101 for inserting a copper busbar for electrical connection is formed between the two conductive plates 102. The protective element 2 is provided with a limiting part 201, which can contact the copper busbar to limit the length of the copper busbar inserted into the conductive element 1.

[0027] Based on the above scheme, the terminal mainly consists of a conductive element 1 and a protective element 2 disposed on the outside of the conductive element 1. The conductive element 1 includes two opposing conductive plates 102, which form a plug-in space 101. This space is used for inserting a copper busbar to achieve electrical connection, ensuring smooth current transmission between the high-current flat terminal and the copper busbar. The limiting part 201 provided on the protective element 2 is the key structure for solving the problem of excessive copper busbar insertion. When the operator inserts the copper busbar into the plug-in space 101, as the copper busbar goes deeper, its end will gradually approach and eventually contact the limiting part 201. Once the end of the copper busbar touches the limiting part 201, due to the blocking effect of the limiting part 201, the copper busbar can no longer be inserted into the conductive element 1, thereby effectively limiting the length of the copper busbar inserted into the conductive element 1 and avoiding excessive copper busbar insertion.

[0028] The high-current flat terminal of this application has several significant advantages. First, in terms of electrical performance, the limiting part 201 on the protective component 2 precisely limits the length of the copper busbar inserted into the conductive component 1, avoiding the problem of deformation of the internal conductive structure of the conductive component 1 due to excessive insertion of the copper busbar. This allows the contact area between the conductive component 1 and the copper busbar to remain within a stable and appropriate range, effectively reducing contact resistance. The reduction in contact resistance means a significant reduction in the heat generated when current flows, which not only improves energy utilization efficiency and reduces energy loss, but also greatly reduces the risk of safety accidents such as aging of insulation materials, performance degradation, or even fires caused by local overheating, effectively ensuring the safe and stable operation of the electrical system.

[0029] Secondly, from a mechanical structure perspective, the limiting part 201 prevents damage to the conductive component 1 and the protective component 2 caused by excessive insertion of the copper busbar. This avoids deformation and cracking of components such as the outer shell and clips of the conductive component 1 due to over-insertion, effectively maintaining the structural integrity of the terminal, enhancing its mechanical strength and durability, and extending its service life. At the same time, the stable structure also facilitates subsequent disassembly and maintenance, reducing operational difficulty and cost.

[0030] Finally, during manufacturing, installation, and commissioning, the limiting unit 201 provides operators with clear insertion depth markings, enabling them to accurately determine the insertion depth of the copper busbar without relying on experience. This significantly improves production efficiency and ensures consistent product quality. The connection quality between terminals and copper busbars from different batches or by different operators consistently reaches a high level, effectively reducing potential risks to the entire electrical system and enhancing its reliability and stability.

[0031] Furthermore, the protective component 2 includes two opposing protective plates 202, each corresponding to one of the two conductive plates 102. Each of the two protective plates 202 has a connecting portion 2023 on both sides for connection. The limiting portion 201 extends to the left from one of the connecting portions 2023. The protective component 2 is composed of two opposing protective plates 202, each corresponding to one of the two conductive plates 102. This arrangement allows the protective plates 202 to provide all-around external protection for the conductive plates 102, preventing direct damage from external factors. The two sides of the two protective plates 202 are connected by the connecting portion 2023. This connection method enhances the overall structural stability of the protective component 2, enabling it to better withstand external pressure and impact, and providing reliable support for the internal conductive structure.

[0032] The limiting portion 201 extends to the left from one of the connecting portions 2023, cleverly utilizing the positional advantage of the connecting portion 2023. When the copper busbar is inserted into the insertion space 101 formed between the two conductive plates 102, it gradually moves closer to the left as the insertion depth increases. When the copper busbar reaches a certain depth, its end contacts the limiting portion 201 extending from the connecting portion 2023. Because the limiting portion 201 has a fixed position and shape, it can effectively prevent the copper busbar from being inserted further, thereby precisely limiting the length of the copper busbar inserted into the conductive member 1 and preventing over-insertion of the copper busbar.

[0033] Meanwhile, the limiting part 201 has a hollowed-out center. During the insertion of the copper busbar, the limiting part 201 plays a crucial role in preventing excessive insertion. The hollowed-out design in the center does not weaken its limiting function; rather, it optimizes the structure of the limiting part 201 while maintaining its basic limiting function. When the copper busbar contacts the limiting part 201, the edges of the limiting part 201 still act as a barrier, restricting the copper busbar from further insertion. Simultaneously, the hollowed-out center makes the limiting part 201 more flexible in its overall structure, which can, to some extent, buffer the impact force generated during copper busbar insertion, preventing damage to the limiting part 201 or the copper busbar itself due to rigid collisions.

[0034] In some embodiments, connecting portions 1023 are provided on both sides of the two conductive plates 102 for connection, and the two connecting portions 1023 are correspondingly arranged inside the two connecting portions 2023. This structural design has a tight logic and a cooperative working mechanism. The conductive plate 102 is the core component for the terminal to realize the conductive function. The connecting portions 1023 on both sides play a role in stabilizing the structure of the conductive plate 102 itself and cooperating with the external protective structure. When the copper busbar is inserted into the insertion space 101 formed by the two conductive plates 102, the conductive plate 102 will bear the force brought by the insertion of the copper busbar. At this time, the connecting portion 1023 can connect the two conductive plates 102 into a relatively stable whole, so that they can share this force, avoid deformation or displacement of a single conductive plate 102 due to uneven force, ensure the stability of the insertion space 101, and thus ensure that the copper busbar can be smoothly inserted and achieve a stable connection.

[0035] The connecting portion 1023 is located inside the connecting portion 2023, and the connecting portion 2023 of the protective member 2 provides external protection and structural support for the entire terminal. When subjected to external forces such as collisions or compression, the connecting portion 2023 will transfer some of the force to the inner connecting portion 1023. After receiving these forces, the connecting portion 1023 further disperses them onto the two conductive plates 102, forming a force transmission and dispersion system. This arrangement allows the entire terminal to rationally distribute forces when facing internal and external forces through the coordinated work of the connecting portion 1023 and the connecting portion 2023, avoiding local stress concentration and thus maintaining the overall structural stability of the terminal.

[0036] Meanwhile, the vertical projection of the connecting portion 2023 covers the connecting portion 1023. In actual use scenarios, terminals face external forces from various directions, such as collisions during installation and pressure from other objects in the environment. As part of the terminal's external protective structure, the vertical projection of the connecting portion 2023 covering the connecting portion 1023 means that when subjected to an external force in the vertical direction (perpendicular to the plane where the connecting portion 2023 is located), the connecting portion 2023 will bear this force first. Since the connecting portion 2023 typically has a certain strength and thickness, it can effectively disperse and buffer these external forces, preventing them from acting directly on the connecting portion 1023.

[0037] The connecting portion 1023 is a key component connecting the two conductive plates 102, playing a crucial role in maintaining the stability of the conductive plate 102 structure and the accuracy of the insertion space 101. If the connecting portion 1023 is subjected to a direct external impact, it may cause the conductive plate 102 to deform, thereby affecting the insertion of the copper busbar and the stability of the electrical connection. The design of the connecting portion 2023, with its vertical projection covering the connecting portion 1023, acts like a "protective shield" for the connecting portion 1023, blocking external forces and ensuring that the connecting portion 1023 can operate in a relatively safe environment. At the same time, this layout also facilitates force transmission. When the connecting portion 2023 is subjected to external force, it will evenly transmit the force to the connecting portion 1023 and the entire conductive structure, allowing the entire terminal to share the external force and avoiding local stress concentration.

[0038] Optionally, the protective component 2 is riveted to the outside of the conductive component 1, or the protective component 2 is fixed to the outside of the conductive component 1 by screws. Riveting is a process that uses external force to deform a rivet, tightly connecting two or more parts together. When the protective component 2 is riveted to the outside of the conductive component 1, the rivet is subjected to enormous pressure and undergoes plastic deformation during the riveting process. The deformed portion fills the corresponding holes of the protective component 2 and the conductive component 1, forming a mechanical interlocking structure. This structure firmly fixes the protective component 2 and the conductive component 1 together in the direction perpendicular to the connection surface. At the same time, the friction between the rivet and the protective component 2 and the conductive component 1 can also prevent them from moving relative to each other in the direction parallel to the connection surface to a certain extent. During the use of high-current flat terminals, when subjected to external forces, such as pulling, vibration, or accidental collision during installation, the mechanical interlocking structure formed by riveting can effectively distribute the external force to the entire connection area, preventing the protective component 2 from separating from the conductive component 1, and ensuring that the protective component 2 always provides stable protection and support for the conductive component 1.

[0039] Screw fastening is a method of connecting parts by utilizing the engagement between the screw's thread and the screw hole. When using a screw to fix the protective component 2 to the outside of the conductive component 1, the screw is passed through the pre-machined screw holes on both the protective component 2 and the conductive component 1, and then the screw is rotated, causing the screw thread to mesh with the screw hole thread. As the screw is tightened, a preload force is generated between the protective component 2 and the conductive component 1. This preload force presses the protective component 2 tightly against the conductive component 1, creating a tight contact between them. During terminal operation, when subjected to external force, the preload force can resist the tendency of the external force to separate the protective component 2 and the conductive component 1. Moreover, the screw fastening method has a certain degree of adjustability; if the connection between the protective component 2 and the conductive component 1 is found to be loose during use, the tightness of the connection can be restored by retightening the screw.

[0040] Generally, the conductive plate 102 includes a main body 1021 and a plurality of elastic plug-in portions 1022 spaced apart at one end of the main body 1021. The main body 1021 is connected and fixed to the protective member 2, and the elastic plug-in portions 1022 can be electrically connected to the copper busbar. The main body is the basic support structure of the conductive plate 102, and its connection and fixation to the protective member 2 provides a stable mounting foundation for the entire conductive plate 102. The plurality of elastic plug-in portions 1022 spaced apart at one end of the main body 1021 are the key part for the conductive plate 102 to achieve electrical connection with the copper busbar. When the copper busbar is inserted, the elastic plug-in portions 1022 undergo elastic deformation due to their own elastic properties. This elastic deformation allows the elastic plug-in portions 1022 to fit tightly against the surface of the copper busbar, forming a large contact area. According to electrical principles, the larger the contact area, the smaller the contact resistance, thereby reducing energy loss when current passes through and improving power transmission efficiency. Meanwhile, the elasticity of the flexible plug portion 1022 ensures that a certain pressure is always applied to the copper busbar during insertion and removal, keeping the connection between the copper busbar and the conductive plate 102 stable and preventing electrical faults caused by poor contact due to vibration, shaking, or other factors. Moreover, the multiple flexible plug portions 1022 are arranged at intervals, allowing them to contact the copper busbar from different positions during insertion, further dispersing the contact pressure and improving the reliability and stability of the connection.

[0041] The elastic plug-in portion 1022 is arc-shaped, and a portion of the plug-in space 101 is formed between two opposing elastic plug-in portions 1022. The gap in the plug-in space 101 decreases and then increases from left to right, with a minimum gap of 1.8 mm and a maximum gap of 7.9 mm. The arc-shaped design of the elastic plug-in portion 1022 fully utilizes the characteristic of an arc structure to produce uniform elastic deformation under force. When the copper busbar is inserted into the plug-in space 101, it comes into contact with the arc-shaped elastic plug-in portion 1022 and applies force to it. Due to the geometric characteristics of the arc, this force is evenly distributed across the entire arc surface of the elastic plug-in portion 1022, allowing the elastic plug-in portion 1022 to undergo elastic deformation in a relatively smooth and uniform manner. This uniform deformation ensures a stable and large-area contact between the elastic plug-in portion 1022 and the copper busbar, thereby effectively reducing contact resistance and improving current transmission efficiency. At the same time, the arc-shaped design can also disperse stress to a certain extent, avoiding premature damage to the elastic connector 1022 due to local stress concentration, thus extending its service life.

[0042] The design of the insertion space 101, where the gap first decreases and then increases from left to right, comprehensively considers both the ease of copper busbar insertion and the stability of the connection. In the initial stage of copper busbar insertion, the larger gap provides sufficient guiding space, allowing the copper busbar to easily enter the insertion space 101, reducing jamming and resistance during insertion and improving installation efficiency. As the copper busbar is inserted deeper, the gap gradually decreases, which gradually increases the clamping force of the elastic connector 1022 on the copper busbar, better securing it and preventing it from loosening due to vibration or shaking during subsequent use, ensuring the stability of the electrical connection. Once the copper busbar is inserted to the appropriate position, the gap gradually increases again. This design provides a buffer for the slight thermal expansion and contraction of the copper busbar, preventing excessive stress between the copper busbar and the elastic connector 1022 caused by temperature changes, thus avoiding damage. Furthermore, when the copper busbar needs to be removed, the larger gap makes it easier for operators to apply external force to smoothly pull it out.

[0043] The minimum gap of the insertion space 101 is set at 1.8mm. This is based on considerations of the minimum clamping force and contact stability required between the copper busbar and the flexible insertion part 1022. A gap that is too small may cause difficulty in inserting the copper busbar, or even damage the copper busbar or the flexible insertion part 1022; while a gap that is too large will not provide sufficient clamping force, easily causing the copper busbar to loosen. The minimum gap of 1.8mm ensures smooth insertion of the copper busbar while allowing the flexible insertion part 1022 to generate appropriate clamping force on the copper busbar, ensuring the reliability of the electrical connection. The maximum gap is set at 7.9mm to meet the insertion requirements of copper busbars of different specifications and to provide sufficient operating space. The larger maximum gap can accommodate the insertion of copper busbars of different thicknesses and widths within a certain size range, improving the versatility and adaptability of the terminals. At the same time, the larger gap also provides operators with more convenient operating space during the insertion and removal of the copper busbar, reducing the difficulty of operation.

[0044] It is worth mentioning that the protective plate 202 includes a fixing part 2021 located outside the main body 1021 and a supporting part 2022 located outside the elastic plug-in part 1022. A reinforcing rib 203 is also provided between the fixing part 2021 and the supporting part 2022. The protective plate 202 is formed by the fixing part 2021 located outside the main body 1021, the supporting part 2022 located outside the elastic plug-in part 1022, and the reinforcing rib 203 connecting the two, constituting a whole. The fixing part 2021, through its stable connection with the main body 1021, provides a solid mounting base for the entire protective plate 202, allowing it to adhere tightly to the conductive plate 102 body and preventing loosening or displacement during operation. The supporting part 2022, located outside the elastic plug-in part 1022, primarily provides additional support and protection for the elastic plug-in part 1022. When the copper busbar is inserted into the flexible connector 1022, a certain force is applied to the flexible connector 1022. The support part 2022 can disperse this force to prevent the flexible connector 1022 from being excessively deformed or damaged due to excessive force, and ensure that the flexible connector 1022 can normally perform its function of electrically connecting with the copper busbar.

[0045] The reinforcing rib 203, positioned between the fixing part 2021 and the supporting part 2022, plays a crucial role in enhancing the structural strength and stability of the protective plate 202. From a mechanical perspective, the reinforcing rib 203 essentially constructs a reinforcing frame between the fixing part 2021 and the supporting part 2022. When the protective plate 202 is subjected to external forces, such as collisions during installation or vibrations in the usage environment, the reinforcing rib 203 can withstand and disperse these forces, transferring stress throughout the entire structure of the protective plate 202 and preventing localized stress concentration. This is analogous to using beams and columns in a building to enhance its load-bearing capacity; the reinforcing rib 203 ensures that the protective plate 202 maintains its structural integrity when facing various external forces, making it less prone to deformation or breakage.

[0046] Preferably, the protective component 2 is made of stainless steel, and the conductive component 1 is made of copper. Stainless steel has high strength and good toughness. In the operating environment of high-current flat terminals, they may be subjected to various external forces, such as mechanical stress during installation and vibration during equipment operation. The high strength of stainless steel ensures that the protective component 2 is not easily deformed under these external forces, thus stably performing its protective function and protecting the internal conductive component 1 from interference and damage from external physical factors. Its good toughness ensures that the protective component 2 will not easily break when subjected to a certain degree of impact, but can absorb and disperse energy through its own elastic deformation, further enhancing the protective effect on the conductive component 1. The conductive component 1 is made of copper, which, due to its low resistivity, can significantly reduce energy loss during high-current transmission. Compared with some metal materials with higher resistivity, copper conductive component 1 can effectively transmit more electrical energy to the load end, improving the energy utilization efficiency of the entire electrical system and reducing energy costs. At the same time, reduced energy loss also means less heat generation, which helps to lower the operating temperature of the terminal and improve its operational stability and reliability.

[0047] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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 of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A high-current flat terminal block, characterized in that, include: The conductive element (1) and the protective element (2) disposed on the outside of the conductive element (1) are provided. The conductive element (1) includes two opposing conductive plates (102), and a plug-in space (101) for inserting a copper busbar for electrical connection is formed between the two conductive plates (102). The protective element (2) is provided with a limiting part (201), which can contact the copper busbar and thus limit the length of the copper busbar inserted into the conductive element (1).

2. The high-current flat terminal according to claim 1, characterized in that, The protective component (2) includes two protective plates (202) arranged opposite to each other. The two protective plates (202) are respectively arranged on the outside of the two conductive plates (102). Both sides of the two protective plates (202) are provided with connecting parts (2023) for connection. The limiting part (201) extends to the left from one of the connecting parts (2023).

3. The high-current flat terminal according to claim 2, characterized in that, The limiting part (201) has a hollowed-out center.

4. The high-current flat terminal according to claim 2, characterized in that, Both sides of the two conductive plates (102) are provided with connecting parts (1023) for connection, and the two connecting parts (1023) are respectively provided on the inner side of the two connecting parts (2023).

5. The high-current flat terminal according to claim 4, characterized in that, The vertical projection of the connecting part (2023) covers the connecting part (1023).

6. The high-current flat terminal according to any one of claims 1-5, characterized in that, The protective component (2) is riveted to the outside of the conductive component (1), or the protective component (2) is fixed to the outside of the conductive component (1) by screws.

7. The high-current flat terminal according to claim 2, characterized in that, The conductive plate (102) includes a main body (1021) and a plurality of elastic plug-in portions (1022) spaced apart at one end of the main body (1021). The main body (1021) is connected and fixed to the protective member (2), and the elastic plug-in portions (1022) can be electrically connected to the copper busbar.

8. The high-current flat terminal according to claim 7, characterized in that, The elastic plug-in portion (1022) is arc-shaped, and a portion of the plug-in space (101) is formed between two opposite elastic plug-in portions (1022). The gap of the plug-in space (101) decreases from left to right and then increases again. The minimum gap of the plug-in space (101) is 1.8 mm, and the maximum gap of the plug-in space (101) is 7.9 mm.

9. The high-current flat terminal according to claim 7, characterized in that, The protective plate (202) includes a fixing part (2021) located on the outside of the main body (1021) and a supporting part (2022) located on the outside of the elastic plug-in part (1022). A reinforcing rib (203) is also provided between the fixing part (2021) and the supporting part (2022).

10. The high-current flat terminal according to any one of claims 1-5, characterized in that, The protective component (2) is made of stainless steel, and the conductive component (1) is made of copper.

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