High Voltage Battery System - Hev: Overview Kia Optima III

Description

The High Voltage Battery System provides the hybrid drive motor, HSG, and electric A/C compressor with electric energy and also reserves the electric energy generated during regeneration braking.

It consists of the battery pack assembly, BMS ECU, power relay assembly, case, control wiring, cooling fan, and cooling ducts.

This battery is a Lithium ion Polymer Battery (LiPB) and has 72 cells (8 Cells x 9 Modules). The voltage of each cell is 3.75V DC, so the rated voltage of this battery pack is 270V DC.

Scheme 277

The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.

Scheme 278

Scheme 279

Scheme 280

See also:
• INTERIOR