Hybrid Vehicle (Hv) Battery Pack And Auxiliary Battery; Hv Battery Pack; Components Powered By The Hv Battery Pack - Lexus ES300h Vehicle Dismantling Manual

Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery

The ES300h features a high voltage Hybrid Vehicle (HV) battery pack that contains sealed
Nickel Metal Hydride (NiMH) battery modules

HV Battery Pack


The HV battery pack is enclosed in a metal case and is rigidly mounted to the cabin area
under the rear seat. The metal case is isolated from high voltage and concealed by carpet
in the cabin area.

The HV battery pack consists of 34 low voltage (7.2 Volt) NiMH battery modules
connected in series to produce approximately 244.8 Volts. Each NiMH battery module is
non-spillable and sealed in a metal case.

The electrolyte used in the NiMH battery module is an alkaline mixture of potassium and
sodium hydroxide. The electrolyte is absorbed into the battery cell plates and will not
normally leak, even in a collision.
Battery pack voltage
Number of NiMH battery modules in the pack
NiMH battery module voltage

Components Powered by the HV Battery Pack


Electric Motor

Power Cables

Electric Generator

DC-DC Converter for 12 Volt Auxiliary Battery
.
HV Battery Pack

Inverter/Converter

A/C Compressor
9
244.8 V
34
7.2 V