Page 28 - i-MeIV Product Information

Total vehicle management

5-5 MiEV OS: Over charging prevent system
In order to protect the battery from accidental overcharge, EV-ECU monitors DC 330V battery while it is charged,
and it stops the charging if the battery reached to the abnormal high voltage or temperature.

EV-ECU
Monitoring Monitoring
Charger Battery

Monitoring
Current value BMU

Emergent
OBC Shut off Current
sensor
CMU

Household DC 330V
100V/200V Battery

Battery pack
5-6 MiEV OS: High voltage circuit shut-off system
i-MiEV utilizes G-sensor of SRS Airbag as the collision sensor, and shut-off the DC 330V circuit to prevent the second
accident.
i-MiEV also has additional two G sensors for the impact from side and rear.
It shut off the current flow from the DC 330V battery when collision not only for the driver/passengers but also the
rescue personnel.
EV control relay
DC 330V Battery
SRS ECU EV ECU Main contactor (+)

Safing
G-Sensor

Analog CPU Main contactor (-)
G-Sensor
G-Sensor
[Side]
G-Sensor
[Rear]
MCU
Smoothing
condenser
Discharge
circuit
SRS ECU
G-Sensor [Rear]

G-Sensor [Side]

Front floor panel Rea floor panel
(Around the selector lever) (Under the rear seat)
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