On the assembly side, High Voltage Interlock Loop Technology (HVIL) ensures connection safety. The high-voltage interlock is a circuit breaking device. If the worker accidentally unplugs the connector, the interlock is disconnected at this time, and the device will automatically disconnect the power supply. Some OEMs are even considering applying this technology at the system level.
Unlike small connectors that utilize lever or slider mechanisms, large high-voltage connectors require innovation in mating schemes. The bolted connector requires an auxiliary tool when installing and repairing the car, but it can measure the torque and can be traced.