Circuit conduction assembly and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a circuit conduction assembly and a vehicle, the circuit conduction assembly is suitable for being electrically connected with a vehicle body conductive part, the vehicle body conductive part comprises a first element, and the standard electrode potential of the first element is E1; comprising a conductive terminal, the conductive terminal comprises a second element, the standard electrode potential of the second element is E2, and E2 is larger than E1; the insulating part is arranged between the vehicle body conductive part and the conductive terminal in an insulating manner so as to prevent direct contact between the vehicle body conductive part and the conductive terminal; and the conduction piece is connected with the vehicle body conductive part and the conductive terminal and comprises a third element, the standard electrode potential of the third element is E3, and E3 is larger than E1 and smaller than E2. According to the circuit conduction assembly provided by the invention, the conductive part of the vehicle body is isolated from the conductive terminal by using the insulating part, the occurrence of galvanic corrosion is inhibited, the conduction part is used as a bridge of a current path, and the conduction part selects a third element of which the standard electrode potential E3 is between E1 and E2, so that the occurrence probability of galvanic corrosion is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a circuit conduction assembly and a vehicle. BACKGROUND

[0002] With the development of the automobile industry, the use of new materials is becoming more and more common. On the automobile, not only iron, copper, aluminum, plastic (PP), silicon and other elements are used, but also magnesium elements are added in the related technology.

[0003] The auxiliary frame of the automobile is a key structure connecting the suspension system and the vehicle body, which is usually made of steel or aluminum alloy. In order to further reduce the overall mass of the automobile and optimize the mechanical properties of the vehicle, it has become one of the research directions to use light and high-strength magnesium-aluminum alloy materials to prepare the auxiliary frame.

[0004] Usually, the whole vehicle conductor is carried by copper, aluminum or iron. However, when magnesium-aluminum alloy is introduced into the vehicle body structure, magnesium-aluminum alloy cannot be directly in contact with copper. Long-term contact will cause galvanic corrosion between magnesium-aluminum alloy and copper, which will further cause poor contact and easily cause functional limitations, and even cause rust and lead to open circuit. SUMMARY

[0005] Therefore, the present application provides a circuit conduction assembly and a vehicle to solve the problem of galvanic corrosion caused by direct contact between magnesium-aluminum alloy material and copper material.

[0006] In a first aspect, the present application provides a circuit conduction assembly adapted to be electrically connected with a vehicle body conductive part, the vehicle body conductive part comprising a first element, the standard electrode potential of the first element being E1, unit: V; The circuit conduction assembly comprises: a conductive terminal, the conductive terminal comprising a second element, the standard electrode potential of the second element being E2, unit: V, and E2>E1; an insulating piece, the insulating piece being arranged between the vehicle body conductive part and the conductive terminal to prevent direct contact therebetween; a conduction piece connecting the vehicle body conductive part and the conductive terminal, the conduction piece comprising a third element, the standard electrode potential of the third element being E3, unit: V, and satisfying E1<E3<E2.

[0007] Beneficial effects: The vehicle body conductive part contains a first element, the standard electrode potential of the first element is E1, the conductive terminal contains a second element, the standard electrode potential of the second element is E2, and E2>E1; when the conductive terminal is in direct contact with the vehicle body conductive part, a significant galvanic corrosion is easily caused due to the large potential difference. By using the insulating piece to isolate the vehicle body conductive part and the conductive terminal, direct contact between the two is avoided, and the occurrence of galvanic corrosion is fundamentally inhibited. Further, the conductive piece is used as a bridge of current path, while ensuring the reliability of electrical connection, the conductive piece is selected from a third element with a standard electrode potential E3 between E1 and E2, so that the conductive piece is in an intermediate position in the electrochemical series. The gradient potential structure formed thereby makes the electron migration tend to be gentle, effectively reduces the electrochemical reaction driving force, and reduces the probability of occurrence of galvanic corrosion.

[0008] In an alternative embodiment, the material of the vehicle body conductive part includes magnesium-aluminum alloy. The material of the conductive terminal includes copper or copper alloy, and the material of the conductive piece includes steel or zinc-nickel alloy.

[0009] Beneficial effects: If the vehicle body conductive part made of magnesium-aluminum alloy is in direct contact with copper for a long time, serious galvanic corrosion is easily caused due to the large electrode potential difference in a humid or salt spray environment, resulting in a decrease in structural strength and deterioration of conductive performance. By introducing steel or zinc-nickel alloy with a standard electrode potential between the two as an intermediate connecting piece, a step-by-step transition connection of magnesium-aluminum alloy-steel-copper or magnesium-aluminum alloy-zinc-nickel alloy-copper is formed, the potential difference between adjacent materials is significantly reduced, the directional migration of electrons is inhibited, and thus the driving force of galvanic corrosion is effectively blocked.

[0010] In an alternative embodiment, the conductive terminal includes a terminal body, the terminal body is provided with a fastening via hole suitable for the conductive piece to pass through; The insulating piece includes an isolation part, the isolation part is arranged between the terminal body and the vehicle body conductive part, and the isolation part is provided with a via hole corresponding to the fastening via hole; The vehicle body conductive part is provided with a mounting hole; and the conductive piece passes through the fastening via hole, the via hole and the mounting hole in sequence.

[0011] Beneficial effects: The conductive piece passes through the via hole and the fastening via hole, mechanically connects the conductive terminal and the vehicle body conductive part, and realizes electrical conduction, thereby ensuring the stability of the circuit connection; the direct metal contact between the conductive terminal and the vehicle body conductive part is blocked by the insulating piece, and the conductive piece is used as an intermediate conductive medium, a potential gradient transition is formed between the conductive piece and the conductive terminal and the vehicle body conductive part, thereby effectively inhibiting galvanic corrosion, improving durability, and further reducing the driving force of interfacial electrochemical corrosion.

[0012] In an alternative embodiment, the conductive piece includes a pressing part, the pressing part abuts against one side of the terminal body away from the isolation part.

[0013] Beneficial effects: By providing a clamping part on the conductive element, and having the clamping part abut against the side of the terminal body away from the isolation part, the contact area between the conductive element and the terminal body is increased, improving the stability and conductivity of the connection. Simultaneously, the uniform preload applied by the clamping part effectively prevents loosening caused by vibration or thermal expansion and contraction, ensuring electrical continuity during long-term operation and improving connection reliability. It also reduces contact resistance, decreasing energy loss and localized heating during current conduction.

[0014] In one alternative embodiment, the insulating member further includes a wrapping portion that extends from the insulating portion and covers at least a portion of the outer periphery of the terminal body.

[0015] Beneficial effects: The wrapping portion extends from the isolation portion and covers at least part of the outer periphery of the terminal body, forming a ring-shaped insulating barrier. This effectively blocks external moisture, dust, and electrolytes from penetrating the metal interface along the terminal surface, inhibiting electrochemical corrosion paths. Simultaneously, it enhances the mechanical wrapping force between the insulating component and the conductive terminal, improving their assembly stability and preventing relative displacement due to vibration. This further improves the overall sealing and insulation performance of the structure.

[0016] In one alternative embodiment, the wrapping portion at least partially covers the side surface of the terminal body opposite to the isolation portion, and the wrapping portion forms a clearance hole suitable for the clamping portion to pass through.

[0017] Beneficial effects: The wrapping part at least partially covers the side surface of the terminal body away from the isolation part, and forms a clearance hole on this surface suitable for the clamping part to pass through, so that the contact area between the clamping part and the terminal body is concentrated in the central part, avoiding the interference of the insulating material with the conductive connection, and ensuring that the pre-tightening force is effectively transmitted to the metal contact interface; at the same time, through the multiple wrapping of the outer periphery and part of the surface of the terminal body by the wrapping part, the path of moisture penetration is further suppressed, and the environmental resistance is improved.

[0018] In one alternative embodiment, the vehicle body conductive part has an anti-rotation hole, and the terminal body also has an anti-rotation part, which is adapted to be embedded in the anti-rotation hole to restrict the circumferential rotation of the terminal body relative to the vehicle body conductive part.

[0019] Beneficial effects: The mating structure of the anti-rotation part and the anti-rotation hole effectively prevents the conductive terminal from rotating synchronously with the conductive component during the fastening process, ensuring the stability and positioning accuracy of the assembly process. By restricting the circumferential degree of freedom, it avoids poor contact or localized wear caused by rotation. At the same time, under vibration conditions, the anti-rotation structure can suppress fretting and loosening, maintain the continuous effectiveness of the preload, and ensure reliable electrical connection.

[0020] In one alternative embodiment, the insulating member further includes an anti-rotation covering portion that covers at least a portion of the outer periphery of the anti-rotation portion to isolate electrical contact between the anti-rotation portion and the conductive portion of the vehicle body.

[0021] Beneficial effects: By covering at least part of the outer periphery of the anti-rotation part with the anti-rotation coating, electrical contact between the anti-rotation part and the conductive part of the vehicle body is effectively prevented, thus avoiding galvanic corrosion that may occur between the anti-rotation part and the conductive part of the vehicle body due to direct metal contact. Especially in the combination of magnesium-aluminum alloy vehicle body conductive part and copper conductive terminal, the anti-rotation coating can effectively block the electrochemical reaction path between dissimilar metals.

[0022] In one alternative embodiment, the conductor includes a bolt with an external thread formed on its outer circumferential surface and an internal thread that matches the external thread on the inner wall of the mounting hole.

[0023] Secondly, the present invention also provides a vehicle, comprising: The vehicle body conductive parts include the subframe. The circuit conduction component is electrically connected to the conductive parts of the vehicle body.

[0024] Since the vehicle includes circuit-conducting components, which have the same effect as circuit-conducting components, they will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the circuit conduction component of the present invention; Figure 2 This is an exploded view of the circuit conduction component of the present invention; Figure 3 This is a schematic diagram showing the installation state of the conductive terminals and insulating components of the present invention; Figure 4 This is a schematic diagram showing the disassembled state of the conductive terminal and insulating component of the present invention; Figure 5 This is a schematic diagram showing the installation state of the conductive terminals and insulating components of the present invention from another perspective. Figure 6 This is a top view of the circuit conduction component of the present invention; Figure 7 for Figure 6 A schematic diagram of section AA.

[0027] Explanation of reference numerals in the attached figures: 1. Conductive part of the vehicle body; 11. Mounting hole; 12. Anti-rotation hole; 2. Conductive terminal; 21. Terminal body; 22. Fastening through hole; 23. Anti-rotation part; 3. Insulating component; 31. Wrapping part; 311. Clearance hole; 32. Isolation part; 321. Through hole; 33. Anti-rotation wrapping part; 4. Conductor; 41. Pressing part. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should 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. They are used only for the convenience of describing this invention and for 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] With the development of the automotive industry, the use of new materials is becoming increasingly common. In automobiles, in addition to iron, copper, aluminum, polypropylene (PP), and silicon, magnesium is now also being used in related technologies. The subframe of a car, as a key structure connecting the suspension system and the body, is typically made of steel or aluminum alloy. Steel has high strength and durability, but is heavy; aluminum alloy, on the other hand, effectively reduces the overall vehicle weight while maintaining a certain level of strength, improving fuel economy. To further reduce the curb weight of automobiles and optimize their mechanical properties, the use of lightweight, high-strength magnesium-aluminum alloys to fabricate subframes has become one of the research directions.

[0033] Typically, electrical conductors in a vehicle are carried by copper, aluminum, or iron. However, when magnesium-aluminum alloys are introduced into the vehicle body structure, the contact between the magnesium-aluminum alloy and copper can lead to galvanic corrosion due to the difference in their electrode potentials. This electrochemical phenomenon accelerates metal dissolution. Galvanic corrosion significantly reduces the structural strength and durability of the connection points, resulting in poor contact, functional limitations, and even open circuits after rusting. This is especially pronounced in harsh environments such as humidity and salt spray.

[0034] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0035] According to an embodiment of the present invention, in one aspect, a circuit-conducting component is provided, adapted to be electrically connected to a vehicle body conductive part 1, the vehicle body conductive part 1 including a first element, the standard electrode potential of the first element being E1, with units of V; the circuit-conducting component includes: Conductive terminal 2 contains a second element, the standard electrode potential of which is E2 in V, and E2 > E1; Insulating component 3 is insulatingly disposed between the conductive part 1 of the vehicle body and the conductive terminal 2 to prevent direct contact between the two. The conductive component 4 connects the conductive part 1 of the vehicle body and the conductive terminal 2. The conductive component 4 includes a third element. The standard electrode potential of the third element is E3, with the unit being V, and it satisfies E1 < E3 < E2.

[0036] The conductive part 1 of the vehicle body contains a first element with a standard electrode potential of E1, and the conductive terminal 2 contains a second element with a standard electrode potential of E2, where E2 > E1. When the conductive terminal 2 is in direct contact with the conductive part 1 of the vehicle body, the large potential difference easily leads to significant galvanic corrosion. In this embodiment, by using an insulating component 3 to isolate the conductive part 1 of the vehicle body from the conductive terminal 2, direct contact between the two is avoided, fundamentally suppressing the occurrence of galvanic corrosion. Furthermore, a conductive component 4 is used as a bridge for the current path. While ensuring the reliability of the electrical connection, the conductive component 4 is selected from a third element with a standard electrode potential E3 between E1 and E2, placing the conductive component 4 in the middle position in the electrochemical sequence. The resulting gradient potential structure makes electron migration more gradual, effectively slowing down the driving force of the electrochemical reaction and reducing the probability of galvanic corrosion.

[0037] In some embodiments, the material of the conductive part 1 of the vehicle body includes a magnesium-aluminum alloy; The conductive terminal 2 is made of copper or a copper alloy, and the conductive component 4 is made of steel or a zinc-nickel alloy.

[0038] The conductive part 1 of the vehicle body can specifically be a subframe made of magnesium-aluminum alloy, and the conductive terminal 2 can specifically be a conductive terminal made of copper. If the conductive part 1 of the vehicle body made of magnesium-aluminum alloy is in direct contact with copper for a long time, it is very easy to cause severe galvanic corrosion due to excessive electrode potential difference in humid or salt spray environments, resulting in a decrease in structural strength and deterioration of conductivity. By introducing steel or zinc-nickel alloy with a standard electrode potential between the two as an intermediate connector, a step-by-step transition connection of magnesium-aluminum alloy-steel-copper or magnesium-aluminum alloy-zinc-nickel alloy-copper is formed, which significantly reduces the potential difference between adjacent materials, inhibits the directional migration of electrons, and thus effectively blocks the driving force of galvanic corrosion.

[0039] In this embodiment, the conductive part 1 of the vehicle body is made of magnesium-aluminum alloy, with magnesium as the first element and an E1 of approximately -2.37V; the conductive terminal 2 is made of copper, with copper as the second element and an E2 of approximately +0.34V; the conductive element 4 is made of steel or zinc-nickel alloy. When the third element is steel, its main component is iron, with an E3 of approximately -0.44V, satisfying the potential relationship E1 < E3 < E2; when the third element is zinc-nickel alloy, the standard electrode potential of zinc is approximately -0.76V, also located between magnesium and copper, similarly forming a potential gradient transition. By enabling the conductive element 4 to perform both mechanical fastening and electrical connection functions while acting as an electrochemical buffer layer, the corrosion driving force between interfaces is significantly reduced, forming a potential gradient transition, reducing the electrode potential difference, inhibiting galvanic corrosion, and improving the durability and safety of the entire vehicle in complex environments.

[0040] Meanwhile, the insulating component 3 is insulatingly disposed between the conductive part 1 of the vehicle body and the conductive terminal 2, effectively blocking the direct electrical contact path between the two, thereby avoiding the formation of the conductive path required for galvanic corrosion.

[0041] The insulating component 3 can be made of high-temperature resistant and aging-resistant engineering plastics or rubber materials to ensure reliable insulation performance under harsh conditions such as vibration, damp heat and salt spray.

[0042] The insulating component 3 can be designed as an annular gasket or a sleeve. For example, when it is a sleeve, by fitting the insulating component 3 around the outer periphery of the conductive terminal 2, it achieves complete coverage and isolation between the conductive terminal 2 and the conductive part 1 of the vehicle body, preventing electrochemical corrosion caused by local contact. When the insulating component 3 is an annular gasket, it can be placed between the connection interface between the conductive terminal 2 and the conductive part 1 of the vehicle body, blocking the electron transfer path through physical isolation, further enhancing the anti-corrosion effect.

[0043] The conductive component 4 can be a bolt, screw, or rivet, etc. One end of which is mechanically connected to and electrically contacts the conductive terminal 2, and the other end passes through the insulating component 3 and is fastened to the conductive part 1 of the vehicle body to achieve electrical connection.

[0044] Additionally, during the connection process, anti-corrosion sealant can be applied to fill the micro-gaps at the interface, further preventing the intrusion of moisture and oxygen and improving the overall corrosion resistance.

[0045] In some embodiments, the conductive terminal 2 includes a terminal body 21, and the terminal body 21 has a fastening through hole 22 suitable for the conductive member 4 to pass through; The insulating component 3 includes an isolation portion 32, which is disposed between the terminal body 21 and the vehicle body conductive portion 1, and the isolation portion 32 has a through hole 321 corresponding to the fastening through hole 22; The conductive part 1 of the vehicle body has a mounting hole 11; the conductive part 4 passes through the fastening through hole 22, the through hole 321 and the mounting hole 11 in sequence.

[0046] The conductive element 4 passes through the through hole 321 and the fastening through hole 22, mechanically connecting the conductive terminal 2 to the conductive part 1 of the vehicle body and achieving electrical conduction, thus ensuring the stability of the circuit connection. The insulating element 3 blocks the direct metal contact between the conductive terminal 2 and the conductive part 1 of the vehicle body, and the conductive element 4 is used as an intermediate conductive medium. A potential gradient transition is formed between the conductive element 4, the conductive terminal 2, and the conductive part 1 of the vehicle body, which effectively suppresses galvanic corrosion, improves durability, and further reduces the driving force of interfacial electrochemical corrosion.

[0047] By opening through holes on both the conductive terminal 2 and the insulating part 3 and ensuring their coaxial arrangement, the conductive part 4 can be used to achieve precise alignment, and both can be firmly connected to the conductive part 1 of the vehicle body at the same time. This ensures the tight fit between the components during the assembly process and avoids local stress concentration or gap corrosion caused by misalignment.

[0048] The area of ​​the isolation portion 32 of the insulating component 3 is larger than the contact area between the terminal body 21 and the conductive portion 1 of the vehicle body, ensuring complete coverage of the metal contact surface and effectively preventing edge leakage and lateral corrosion spread.

[0049] As a variation, the conductive component 4 can be connected to both the conductive terminal 2 and the conductive part 1 of the vehicle body. For example, it can be a split structure, where one end of the conductive component is first fixedly connected to the conductive terminal, and then the conductive terminal assembly is pressed or welded to the conductive part of the vehicle body through another independent connector, thereby achieving mechanical fastening and electrical conduction. Alternatively, the conductive component 4 can be welded to both the conductive terminal 2 and the conductive part 1 of the vehicle body. In this case, the specific structural form of the conductive component 4 can be a U-shaped clip or an L-shaped connecting piece, etc.

[0050] In some embodiments, the conductive member 4 includes a clamping portion 41, which abuts against the side of the terminal body 21 opposite to the isolation portion 32.

[0051] By providing a clamping part 41 on the conductive member 4, and having the clamping part 41 abut against the side of the terminal body 21 opposite to the isolation part 32, the contact area between the conductive member 4 and the terminal body 21 is increased, thereby improving the stability and conductivity of the connection. Simultaneously, the clamping part 41 applies a uniform preload, effectively preventing loosening due to vibration or thermal expansion and contraction, ensuring electrical continuity during long-term operation, and improving connection reliability. It also reduces contact resistance, decreasing energy loss and localized heating during current conduction.

[0052] In some embodiments, combined with Figure 3 , Figure 4 As shown, the insulating member 3 also includes a wrapping portion 31, which extends from the isolation portion 32 and covers at least a portion of the outer periphery of the terminal body 21.

[0053] The wrapping portion 31 extends from the isolation portion 32 and covers at least a portion of the outer periphery of the terminal body 21, forming an annular insulating barrier. This effectively blocks external moisture, dust, and electrolytes from penetrating the metal interface along the terminal surface, inhibiting electrochemical corrosion paths. Simultaneously, it enhances the mechanical covering force between the insulating component 3 and the conductive terminal 2, improving their assembly stability and preventing relative displacement due to vibration. This further improves the overall sealing and insulation performance of the structure.

[0054] In some embodiments, the wrapping portion 31 at least partially covers the side surface of the terminal body 21 opposite to the isolation portion 32, and the wrapping portion 31 forms a clearance hole 311 suitable for the clamping portion 41 to pass through.

[0055] In this embodiment, the wrapping part 31 at least partially covers the side surface of the terminal body 21 away from the isolation part 32, and forms a clearance hole on this surface suitable for the clamping part 41 to pass through, so that the contact area between the clamping part 41 and the terminal body 21 is concentrated in the central part, avoiding the insulation material from interfering with the conductive connection and ensuring that the pre-tightening force is effectively transmitted to the metal contact interface; at the same time, by wrapping the outer periphery and part of the surface of the terminal body 21 with multiple wrapping by the wrapping part 31, the path of moisture penetration is further suppressed, and the environmental resistance is improved.

[0056] In some embodiments, the vehicle body conductive part 1 has an anti-rotation hole 12, and the terminal body 21 also has an anti-rotation part 23, which is adapted to be embedded in the anti-rotation hole 12 to restrict the circumferential rotation of the terminal body 21 relative to the vehicle body conductive part 1.

[0057] The mating structure between the anti-rotation part 23 and the anti-rotation hole 12 effectively prevents the conductive terminal 2 from rotating synchronously with the conductive part 4 during the fastening process, ensuring the stability and positioning accuracy of the assembly process. By restricting the circumferential degree of freedom, it avoids poor contact or localized wear caused by rotation. At the same time, under vibration conditions, the anti-rotation structure can suppress fretting and loosening, maintain the continuous effectiveness of the preload, and ensure reliable electrical connection.

[0058] In some embodiments, the insulating member 3 further includes an anti-rotation covering portion 33, which covers at least a portion of the outer periphery of the anti-rotation portion 23 to isolate the electrical contact between the anti-rotation portion 23 and the conductive portion 1 of the vehicle body.

[0059] By covering at least a portion of the outer periphery of the anti-rotation part 23 with the anti-rotation covering part 33, electrical contact between the anti-rotation part 23 and the conductive part 1 of the vehicle body is effectively prevented, thus avoiding galvanic corrosion that may occur between the anti-rotation part 23 and the conductive part 1 of the vehicle body due to direct metal contact. In particular, in the combination of the magnesium-aluminum alloy conductive part 1 of the vehicle body and the copper conductive terminal 2, the anti-rotation covering part 33 can effectively block the electrochemical reaction path between dissimilar metals.

[0060] In some embodiments, the conductor 4 includes a bolt, the outer peripheral surface of which is formed with an external thread, and the inner wall of the mounting hole 11 is provided with an internal thread that matches the external thread.

[0061] The specific structural form of the conductive component 4 can be a bolt, with an external thread on its outer circumference, which engages with the internal thread on the inner wall of the mounting hole 11 to achieve screwing and fixing; by rotating the bolt, the clamping part 41 is subjected to a pre-tightening force along the axial direction, pressing the conductive terminal 2 against the conductive part 1 of the vehicle body, and pressing the insulating part 3 between the conductive part 1 of the vehicle body and the conductive terminal 2.

[0062] Additionally, the fastening through hole 22 opened in the terminal body 21 can also be formed in an internal thread that matches the external thread, so that the conductive part 4 and the conductive terminal 2 form a threaded connection, further improving assembly stability.

[0063] According to an embodiment of the present invention, in another aspect, a vehicle is also provided, comprising: Body conductive part 1, body conductive part 1 includes a subframe; The circuit conduction component is electrically connected to the conductive part 1 of the vehicle body.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A circuit conduction component, characterized in that, Suitable for electrical connection with a vehicle body conductive part (1), the vehicle body conductive part (1) includes a first element, the standard electrode potential of the first element is E1, the unit is V; The circuit conduction component includes: Conductive terminal (2), the conductive terminal (2) includes a second element, the standard electrode potential of the second element is E2, the unit is V, and E2 > E1; An insulating component (3) is provided between the conductive part (1) of the vehicle body and the conductive terminal (2) to prevent them from making direct contact. The conductive component (4) connects the conductive part (1) of the vehicle body to the conductive terminal (2). The conductive component (4) contains a third element. The standard electrode potential of the third element is E3, with the unit being V, and satisfies E1 < E3 < E2.

2. The circuit conduction component according to claim 1, characterized in that, The material of the conductive part (1) of the vehicle body includes magnesium-aluminum alloy; The conductive terminal (2) is made of copper or copper alloy, and the conductive component (4) is made of steel or zinc-nickel alloy.

3. The circuit conduction component according to claim 1, characterized in that, The conductive terminal (2) includes a terminal body (21), and the terminal body (21) has a fastening through hole (22) suitable for the conductive member (4) to pass through. The insulating component (3) includes an isolation portion (32), which is disposed between the terminal body (21) and the vehicle body conductive portion (1), and the isolation portion (32) has a through hole (321) corresponding to the fastening through hole (22). The conductive part (1) of the vehicle body has a mounting hole (11); the conductive member (4) passes through the fastening through hole (22), the through hole (321) and the mounting hole (11) in sequence.

4. The circuit conduction component according to claim 3, characterized in that, The conductive element (4) includes a clamping part (41) that abuts against the side of the terminal body (21) away from the isolation part (32).

5. The circuit conduction component according to claim 4, characterized in that, The insulating member (3) further includes a wrapping portion (31) that extends from the isolation portion (32) and covers at least a portion of the outer periphery of the terminal body (21).

6. The circuit conduction component according to claim 5, characterized in that, The wrapping portion (31) at least partially covers the side surface of the terminal body (21) away from the isolation portion (32), and the wrapping portion (31) forms a clearance hole (311) suitable for the clamping portion (41) to pass through.

7. The circuit conduction component according to claim 3, characterized in that, The conductive part (1) of the vehicle body has an anti-rotation hole (12), and the terminal body (21) also has an anti-rotation part (23). The anti-rotation part (23) is adapted to be embedded in the anti-rotation hole (12) to restrict the circumferential rotation of the terminal body (21) relative to the conductive part (1) of the vehicle body.

8. The circuit conduction component according to claim 7, characterized in that, The insulating member (3) further includes an anti-rotation covering (33) which covers at least a portion of the outer periphery of the anti-rotation part (23) to isolate the electrical contact between the anti-rotation part (23) and the vehicle body conductive part (1).

9. The circuit conduction component according to any one of claims 3 to 8, characterized in that, The conductive element (4) includes a bolt, the outer circumferential surface of which forms an external thread, and the inner wall of the mounting hole (11) is provided with an internal thread that matches the external thread.

10. A vehicle, characterized in that, include: The vehicle body conductive part (1) includes a subframe; And the circuit-conducting component as described in any one of claims 1 to 9, wherein the circuit-conducting component is electrically connected to the conductive part (1) of the vehicle body.

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