evsarjhvbidirectional
The Role of HV Relays in EV Charging Stations
In EV DC charging stations, main, pre-charge and isolation relays serve separate roles; bidirectional (V2G) capability is critical.
1 min read0 views
Overview
In DC fast charging stations, HV relays manage the main power path, pre-charge circuit and connection isolation.
Circuit Architecture
- Main contactor for high current to vehicle battery
- Pre-charge relay for controlled DC link capacitor charging
- Isolation relay for service safety