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High Voltage Safety
The HV battery pack powers the high voltage electrical system with DC
electricity. Positive and negative orange colored high voltage power
cables are routed from the battery pack, under the vehicle floor pan, to
the inverter/converter. The inverter/converter contains a circuit that
boosts the HV battery voltage from 244.8 to 650 Volts DC. The
inverter/converter creates 3-phase AC to power the motor. Power cables
are routed from the inverter/converter to each high voltage motor
(electric motor, electric generator, and A/C compressor). The following
systems are intended to help keep occupants in the vehicle and
emergency responders safe from high voltage electricity:
High Voltage Safety System
• A high voltage fuse n provides short circuit protection in the
HV battery
pack.
• Positive and negative high voltage power cables o connected to the HV
battery pack are controlled by 12 Volt normally open relays p. When the
vehicle is shut off, the relays stop electrical flow from leaving the
HV
battery pack.
WARNING:
The high voltage system may remain powered for up to 10 minutes after
the vehicle is shut off or disabled. To prevent serious injury or death
from severe burns or electric shock, avoid touching, cutting, or
breaching any orange high voltage power cable or high voltage
component.
• Both positive and negative power cables o are insulated from the metal
body. High voltage electricity flows through these cables and not through
the metal vehicle body. The metal vehicle body is safe to touch because it is
insulated from the high voltage components.
• A ground fault monitor in the hybrid vehicle computer q continuously
monitors for high voltage leakage to the metal chassis while the vehicle is
running. If a malfunction is detected, the hybrid vehicle computer q will
illuminate the master warning light
in the instrument cluster and
indicate “Check Hybrid System” on the multi-information display.
High Voltage Safety System – Vehicle Shut Off (READY-OFF)
High Voltage Safety System – Vehicle On and Operational (READY-ON)
o
q
n
o
p
p
12 Volt
Auxiliary
Battery
HV Battery Assembly
0 Volts AC
3-Phase
A/C
Compressor
Electric
Generator
Electric
Moto
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