Bi-directional onboard chargers (OBCs) allow a vehicle’s battery pack to power another vehicle. However, because they are bi-directional, the OBCs present several safety challenges.
To this end, LEM, a global provider of electrical measurement solutions, has introduced the first automotive-grade residual current monitoring sensor (RCM-B) designed for integration within an electric vehicle’s (EV) onboard charger, as well as for plug-in hybrid electric vehicles (PHEVs).
The newly launched RCM-B sensor meets stringent automotive-grade requirements, providing reliable residual current monitoring (RCM) for EVs and PHEVs.
This RCM-B sensor addresses a critical safety challenge in EV charging: detecting potential residual currents that could lead to electric shock. By effectively monitoring ac and dc residual currents, the sensor ensures the safety of high-voltage EV systems, particularly when the vehicle is connected to charging infrastructure.
The new sensor is optimally adapted for use with bi-directional OBCs that enable vehicle-to-everything (V2X) applications, thanks to its ability to address various of EV system engineers’ challenges in a single unit.
The advanced sensor is compact and highly accurate, complying with the IEC 62955 standard, which mandates RCM-B protection in charging systems. This capability allows manufacturers to embed enhanced safety features within vehicles, avoiding the need for external RCM devices in the charging station. As a result, it streamlines charging infrastructure and reduces costs for consumers.
Filed Under: Sensors