Definition & In-depth Analysis: ISO 15118 is an international standard defining the communication interface between an Electric Vehicle (EV) and the charging equipment. It is much more than a simple power connection; it is a sophisticated protocol that supports both AC and DC charging and serves as the foundational technology for [Plug & Charge] and [V2G] (Vehicle-to-Grid) applications.
This protocol introduces a high-level communication mechanism based on digital certificates, enabling a secure “bidirectional handshake” between the car and the charger. Unlike traditional pulse-width modulation (PWM) signaling, ISO 15118 allows the vehicle to transmit detailed battery status, charging requirements, and even energy price preferences to the charger. This data exchange allows for highly optimized energy scheduling, which is critical for balancing the electrical grid as EV adoption scales globally.
Application Example: When an ISO 15118-compliant vehicle connects to a YD-EV charger, the two devices establish an encrypted communication channel. The car automatically sends its unique contract certificate to the charger, which is instantly verified by the backend system. This process is similar to how a laptop automatically connects to a secure Wi-Fi network via a certificate, requiring no manual intervention from the driver.
Related Product Links:
- [High-Performance ISO 15118 Compliant DC Controllers]
- [Bi-directional V2G Ready Charging Modules]
