High Voltage EV Connectors: 5100+ Patents, Global Compliance

High voltage ring terminals are specialized electrical connectors used to terminate the ends of high-voltage cables, creating a secure and reliable connection point for bolting to a busbar, stud, or equipment terminal in electric vehicle (EV) powertrains and charging systems. They are characterized by a ring-shaped (circular) barrel that is crimped or compressed onto the stripped end of a high-voltage cable, and a flat, ring-shaped tongue with a hole for a bolt or stud. These terminals must be engineered to handle the extreme conditions of EV applications, including high voltages (400V-1000V+), high currents (tens to hundreds of amps), vibration, and temperature fluctuations. JONHON is a leading manufacturer of high-quality high voltage ring terminals, designed as part of our comprehensive high-voltage interconnect solutions. Our ring terminals are engineered with precision to ensure reliable, long-lasting connections. With a dedicated team of over 400 engineers in our electric vehicle business unit and a portfolio of over 300 EV-related patents, JONHON's terminals are manufactured from high-conductivity materials such as tinned copper to minimize electrical resistance and prevent corrosion. The ring tongue is designed to provide a large contact surface area for efficient current transfer and is often plated for enhanced conductivity and durability. The crimp barrel is engineered to create a gas-tight, low-resistance connection with the cable conductor when used with the appropriate crimping tool, ensuring mechanical strength and electrical integrity over the life of the vehicle. Many of our ring terminals are designed to be used within larger connector housings that provide insulation, sealing (ingress protection), and strain relief, and may incorporate features for the High Voltage Interlock Loop (HVIL) safety circuit. JONHON's active participation in formulating 7 IEC standards ensures our terminals and associated connectors meet global requirements for safety and performance. For EV manufacturers and Tier 1 suppliers, JONHON provides high voltage ring terminals as part of a complete, engineered system for reliable high-voltage interconnection. Please contact our engineering team to discuss your specific terminal and connector requirements.