Circuit conduction assembly and vehicle

By introducing insulating components and conductive components with potential gradient transitions at the contact points between magnesium-aluminum alloy and copper, the problem of galvanic corrosion caused by direct contact between magnesium-aluminum alloy and copper is solved, achieving stable and reliable electrical connections and structural durability.

CN121484533APending Publication Date: 2026-02-06ZHEJIANG GEELY HLDG GRP CO LTD +1
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Patent Information

Application Number
CN202511719612.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-21
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

Magnesium-aluminum alloys are prone to galvanic corrosion when in direct contact with copper, leading to poor contact and reduced structural strength, especially in humid or salt spray environments.

Method used

Insulating components are used to isolate the direct contact between the magnesium-aluminum alloy and copper, and a potential gradient transition is formed through conductive components. A material with a standard electrode potential between the two is used as an intermediate connector, such as steel or zinc-nickel alloy, to form a step-by-step transition connection of magnesium-aluminum alloy-steel-copper or magnesium-aluminum alloy-zinc-nickel alloy-copper.

Benefits of technology

It effectively inhibits galvanic corrosion, improves the reliability and durability of electrical connections, reduces the driving force of electrochemical reactions, reduces contact resistance and energy loss, and enhances the environmental tolerance of the structure.

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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.
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