Page 24 - i-MeIV Product Information

Cooling system

4-2-1 Cooling system for DC 330V Battery
In order to manage the battery temperature while the quick charging, cooled air blow system has been applied.
This system uses the A/C system and blower fan at HVAC [Heater Ventilation and Air Conditioning] , and send
the cooled air to the battery pack while quick charging.
Blower fan [battery pack Integrated] also adopted and evacuate the air inside of the battery pack.
DC 330V Battery cooling system

Cooling duct [Battery pack]

Blower fan [battery pack Integrated]
Damper

Battery pack

HVAC
Cooling duct [vehicle floor]

Part Name Role

HVAC Provide air for cooling to the inside of battery pack

Air outlet changing damper Open/Close the duct from HVAC to battery pack

Cooling duct [vehicle floor] Introduce the cool air from HVAC to battery pack

Cooling duct [Battery pack] Introduce the cool air from HVAC to battery pack

Blower fan [battery pack Integrated] Exhaust hot air from the inside of battery pack to outside

4-2-2 Cooling system for DC 330V Battery: Outline of function
Followings are outline of the cooling system for DC 330V battery.
[1] EV-ECU determines that the quick charger plug is connected.
[2] EV-ECU receives the battery temperature information from BMU [Battery Management Unit].
If the battery temperature is exceeding the certain value, EV-ECU send an order to Compressor / Heater control
ECU to activate the system.
[3] Heater control ECU activate the system. and BMU activates Blower fan [battery pack integrated] together.

Basic diagram of DC 330V Battery cooling system

-Compressor / inverter control
Compressor / Heater control ECU
-Cooling information -Quick Charge information
-Battery infomarion
Compressor
inverter A/C control Unit
-Fan sped control -Charging information
-Mode control BMU EV-ECU

Quick
Charger

Air outlet Blower fan
changing damper Battery pack [Battery pack integrated]

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