High-voltage DC relays are widely used in various fields. The field of new energy vehicles is an important field of application of high-voltage DC relays. In new energy vehicles, the charging and discharging lines of batteries are switched and protected, and combined to prevent equipment failure or short circuit, fire and other safety mechanisms, automatically detect and isolate faulty lines, prevent further expansion of the scope of damaged equipment, save maintenance costs, prevent leakage protection, and effectively improve battery life. The core components of energy vehicles.

New energy vehicles generally use high-voltage battery packs to drive electric vehicles. In order to ensure the normal on-off of the electrical system, a high-voltage DC relay needs to be configured between the battery system of the electric vehicle and the motor controller. When the system stops running, it acts as isolation. When the system is running, it acts as a connection. When the vehicle is turned off or fails, the energy storage system can be safely separated from the vehicle electrical system to break the circuit. Therefore, the high-voltage DC relay is a key safety device for new energy vehicles. If Without it, electric vehicles would not be able to start, drive and stop.