What are Electric Contacts for EV Charging Relay?
Electric Contacts for EV Charging Relay engineered from AgSnO2 composite material resolve severe contact sticking and micro-welding triggered by high-voltage DC inrush currents. Standard unalloyed silver tips frequently degrade under repetitive 400V to 800V DC make-and-break operations inside onboard chargers and main DC contactors, causing premature thermal runaway. Manufactured in-house via precision cold-heading and projection welding, these contact assemblies deliver stable arc extinction and thermal dissipation for Tier-1 automotive and industrial energy storage systems. Direct factory capability supports prototype tooling within 15 days and monthly delivery exceeding 5.0 million units with full traceability.
Resistance to High-Voltage DC Arc Erosion of Custom Copper Stamping for EV Relay
AgSnO2 Dispersed Oxide Matrix
The tin dioxide phase is uniformly distributed within the silver matrix, anchoring the electric arc root to prevent localized melting or material transfer during 500A inductive load cutoffs.
Suppression of Contact Sticking
The high liquidus temperature of the silver-tin-oxide composite prevents the moving and stationary contact bridge from fusing under sudden short-circuit overload spikes.
Dynamic Arc Quenching Support
Surface morphology promotes rapid arc root mobility under magnetic blow-out fields, reducing overall contact dwell time to under 8 milliseconds.
Low Thermal Softening Rate
Alloy hardness maintains structural integrity past 600°C ambient contact zone temperatures, avoiding mechanical deformation during continuous 200A thermal endurance testing.
Target Application Scenarios of Copper Terminal Ag-plated for HVDC Contactor
800V DC Fast-Charging Main Contactors
Manages high-voltage DC pre-charge and main circuit isolation inside DC fast-charging stations rated up to 350 kW.
On-Board Battery Management Relays
Integrates into high-voltage pack disconnect units (PDU) to handle emergency current interruption under fault conditions.
Hybrid Electric Vehicle Auxiliary Relays
Controls high-current DC-DC converter inputs and electric compressor motor circuits under vibration-heavy automotive conditions.
Industrial Energy Storage System (ESS) Racks
Serves as the switching heart of 1500V DC string combiners and rack-level DC circuit breakers.
Frequently Asked Questions about Copper Terminal Silver Plated for New Energy Switch
Why choose AgSnO2 over AgCdO for automotive EV charging relay applications?
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AgSnO2 is fully compliant with RoHS and ELV environmental regulations by eliminating toxic cadmium oxide while offering superior resistance to high-energy DC arc erosion at elevated temperatures.
How do you prevent oxidation on the Copper Contact Terminal for EV HVDC Relay Contactor surface during long-term ocean transit?
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Parts are ultrasonically cleaned, passivated in an anti-tarnish organic bath, and hermetically sealed in multi-layer vacuum foil bags containing volatile corrosion inhibitor (VCI) strips.
Do you supply material test reports and IATF 16949 compliance certificates with every shipment?
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Every shipment includes a full Inspection Certificate detailing hardness, plating thickness, conductivity %IACS, and dimensional compliance verified by our metrology lab.
Can the contact dimensions be customized for a specific EV relay?
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Yes. The component can be produced according to customer drawings covering the stamped profile, mounting geometry, contact location, and dimensional tolerances.
How is the riveted contact position controlled?
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The contact is positioned on the stamped copper component before mechanical riveting. Automated process control is used to reduce variation from manual handling.
contact us
If you are looking for reliable Electric Contacts for EV Charging Relays for your electric vehicle charging system, please do not hesitate to contact us. We have a professional team ready to answer all your questions about copper rivets for EV relays.
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