DTC P0C30-00: Hybrid Battery Pack State Of Charge High: General Description

WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.

* What is the high voltage battery system?

The High Voltage Battery System consists of the Battery Management Unit (BMU), Power Relay Assembly (PRA) and a Cooling Blower. Each function is listed below:

High Voltage Battery: Supplies electrical energy for acceleration and receives/stores electrical energy during deceleration. This battery is a Lithium ion Polymer Battery (LiPB) and has 96 cells (24 Cells x 4 Modules). The voltage of each cell is 3.75V DC, so the rated voltage of this battery pack is 360V DC.
BMU: Controls the High Voltage Battery by monitoring the voltage, current and temperature.
PRA consists of relays which link and cut high voltage, and finally, current sensor which monitors battery current. Those are an assembly in PRA.
Service interlock connector: It is a device that cuts off the circuit connection inside the high voltage battery through mechanical separation.
Cooling blower: Maintains proper high voltage battery temperature.