HVDC in Electric Vehicles (EV)

The High voltage DC components are essential for electric and hybrid vehicles.
In all kind of electronics cars, electronic buses and electronic trucks these HVDC relays are crucial. Mostly the pre-charge relay and the main contactors are part of the Battery Disconnect Unit (BDU), protecting the electronics and securing the safety.

HVDC Relay in Electric Vehicles

HVDC Relay in Electric Vehicles (GER series)
LSIS’ HVDC Relay came to the market for the first time in electric vehicles (HEV, PHEV, EV). Now they are mass produced to keep up with demand from well renowned global automobile manufacturers, who have accumulated trust in LSIS’ products. The HVDC Relay, applied to an electric vehicle, is installed between the vehicle battery and the inverter to cut off the charge and to discharge the DC power of the battery. It is also used between the external charger and the vehicle battery. Applied products are from the general electric relay (GER) series with a rated voltage of DC 450 V and rated current 10 A ~ 400 A.

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Electric vehicle switching application

As the battery capacity of the vehicle increases, the rated voltage is increased and the external charge is expanded. Therefore, it is required to monitor the increase of the DC relay voltage and the On/Off of the contact point.

GPR-M series has a rated voltage of DC 1000 V, 10 A ~ 400 A. The GPR-M400 can be used to check contact On/Off by monitoring the auxiliary contact. These products are all UL, IEC, CCC certified.

GPR-H series has a rated voltage of DC 1500 V, 500 A and an auxiliary contact. They are all UL and IEC certified. In addition, an advantage is that the GPR-H series can be used in a system in which bi-directional blocking, such as reverse blocking or charge / discharge of a system can occur, by applying a bi-directional magnet arc extinguishing structure.

Demand for the LSIS HVDC Relay is expected to increase exponentially with the continued global trend of expansion of renewable energy. The rapid charger for an electric car switches the AC to DC to supply electricity to the vehicle and the HVDC relay is used to supply and cut off the power. ESS, a system for storing electricity, uses a HVDC Relay between the battery and PCS. The HVDC Relay is used for On/Off of solar modules in PV systems.

Based on its achievements in DC 450 V electric vehicles, LSIS will continue to commercialize HVDC relays to DC 1000 V and DC 1500 V for electric vehicles and chargers and will continue as a leader in the renewable energy market.

View detailed application movie by clicking the link below: