The hybrid battery pack sends high‐voltage dc into the power *
control module, which converts it to ac or changes it to a higher or
This ac voltage is then fed to the motor‐generator for propelling *
the vehicle or starting the internal combustion engine.
A battery pack contains several high efficiency NiMH (sealed nickel *
m*etal hydride) or LiIon (Lithium Ion) battery modules stacked in a
sealed enclosure and wired in series to produce a highvoltage
The battery pack is normally mounted in the rear of the chassis *
often behind or under the rear seat or in the trunk area.
HV battery packs are designed to handle very high current flow *
rates during charging and discharging. HV battery pack also has a
good weight‐to‐power out ratio. Even the largest battery pack
weighs only about (90 kg).
Depending on the make and model of the vehicle and the number *
of modules used, hybrid battery pack voltage can range from about
150 volts up to approximately 300 volts dc.
A battery pack cover encloses the modules and protects them from *
damage. It also protects people from electric shock.
Battery pack cover(s) are held on with machine screws. Some *
hybrids have the power control module and battery pack housed