What is the pdu of the new energy vehicle?

Pacific Auto Network PDU, spelled PowerDistributionUnit, is the power distribution socket for cabinet. PDU is electrically connected with high-voltage components through buses and wire harnesses, and provides functions such as charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control and so on. Used in high-voltage system of new energy vehicles to protect and monitor the operation of high-voltage system.

The whole spell is PowerDistributionUnit, power distribution unit, that is, power distribution socket for cabinet.

PDU is electrically connected with high-voltage components through buses and wire harnesses, and provides functions such as charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control and so on. Used in high-voltage system of new energy vehicles to protect and monitor the operation of high-voltage system.

BDU, the whole battle is BatteryDisconnectUnit, which is specially designed for the inside of the battery pack and is also a high-voltage distribution box.

Extended data:

The BDU assembly generally includes the following components:

1, system main circuit contactor, turn on/off the DC current of battery main circuit.

2. Pre-charge relay, which is used to protect the high-voltage circuit from the instantaneous large current when the system is powered on.

3. The current sensor is used to measure and calculate the battery capacity.

The main contactors are arranged at the total positive and negative terminals of the battery pack to provide high-voltage DC power for the high-voltage components of the system. In addition, the main contactor can input current to the battery pack during charging or current feedback.

When the system reports an error, the battery system cuts off the current through the main contactor according to the command of the vehicle controller to ensure the safety of the system.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)