EV Charging Connectors: CCS2, Type2 & GB/T Solutions

EV plug standards are the formal technical specifications that define the physical, electrical, and communication interfaces between an electric vehicle and a charging station. These standards are the bedrock of interoperability, ensuring that any compliant vehicle can safely charge from any compliant station, regardless of manufacturer. They are developed and maintained by international and regional standards organizations to promote safety, reliability, and a seamless user experience across the global EV ecosystem. The primary bodies involved include the International Electrotechnical Commission (IEC), which publishes the IEC 62196 series for plugs, socket-outlets, and connectors; the Society of Automotive Engineers (SAE), which publishes the SAE J1772 standard for AC charging in North America; and the Chinese Guobiao (GB/T) standards committee, which defines the standards used in China. The standards cover multiple critical aspects. Physically, they define the exact dimensions, pin configurations (e.g., the five pins of J1772, the seven pins of Type 2), and the mechanical locking mechanisms of the connector and vehicle inlet. This ensures a proper and secure fit. Electrically, they specify voltage levels, maximum current ratings, and requirements for grounding and fault protection. Critically, they define the communication protocol. For AC charging, this is primarily the control pilot (CP) circuit, which uses a simple PWM signal to communicate the station's current capacity. For DC fast charging, more advanced standards like ISO 15118 build on this to enable digital communication for features like "Plug and Charge" and bi-directional power flow. The result of these standards is a set of distinct plug types used around the world: the SAE J1772 (Type 1) for AC in North America/Japan, the IEC Type 2 for AC in Europe, CCS1 and CCS2 for DC fast charging in those regions, CHAdeMO, and GB/T. JONHON OPTRONIC TECHNOLOGY CO., LTD. is not only a manufacturer of components that comply with these ev plug standards but is also an active participant in shaping them, having formulated 7 IEC standards and over 10 Chinese standards. This deep involvement ensures our products are at the forefront of compliance and innovation. For guidance on selecting the right standards-compliant solution for your market, please contact our engineering team.