Specification
| Item | Specification | |
| Function | ON-Board Charger (OBC) + Low Voltage DC/DC Converter (LDC) | |
| OBC system specification | Maximum capacity (kW) | 10.9 |
| Input voltage (V) | AC 70 - 285 | |
| Output voltage (V) | DC 360 - 826 | |
| Input current (A) | Maximum 48 | |
| LDC system specification | Maximum capacity (kW) | 1.8 |
| Input voltage (V) | DC 360 - 826 | |
| Output voltage (V) | 12.8 - 15.1 | |
| Ampere (A) | 130 | |
| Cooling | Cooling type | Water-cooling |
| Operating temperature [°C (°F)] | -40 to 85 (-40 to 185) | |
Component
1. Cooling Hoses
2. Low Voltage DC/DC Converter (LDC) Positive ( + ) Cable
2-a. 7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.8 - 7.2 lb·ft)
3. Integrated Charge Control Unit (ICCU) Connector
4. Integrated Charge Control Unit (ICCU) High Voltage Power Cable
5. Low Voltage DC/DC Converter (LDC) Negative ( - ) Cable
5-a. 7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.8 - 7.2 lb·ft)
6. Combo Charger Inlet Connector
7. Integrated Charge Control Unit (ICCU)
7-a. 7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)
Description
• The ICCU performs charging functions for the high voltage battery and auxiliary 12 V battery.
• The Integrated Charging Control Unit (ICCU) is an integrated unit consisting of the bidirectional ON-Board Charger and the Low voltage DC/DC Converter (LDC).1) OBC- The OBC converts AC voltage to DC voltage to supply power to the high voltage battery.- It converts the high voltage battery DC voltage into AC voltage that supplies electric power (110 V / 220 V) to the vehicle indoor / outdoor. (V2L : Vehicle-to-Load)2) LDC- Converts the power (High DC) of the high voltage battery to the auxiliary 12 V battery power (Low DC). (High voltage → Low voltage)
Troubleshooting
How to remedy when the fault code occurs
ON-Board Charger (OBC)| Item | Major Fault Code | Suspected Cause | Inspection |
| OBC inspection |
• Internal sensor fault (voltage, current, temperature) • OBC output power performance abnormal |
• OBC | • Check the OBC temperature change during charging, replace the Integrated Charge Control Unit (ICCU) if the same fault code occurs after performing the normal charge |
| Vehicle inspection | • OBC overheat |
• Coolant system • Low coolant • Electric Water Pump (EWP) |
• Check the OBC temperature change during charging • Inspect the Electric Water Pump (EWP) |
| • Interlock | • High voltage cable | • Check the high voltage DC connector connection and terminal condition | |
|
• Battery charger output voltage low • High voltage battery voltage and OBC output voltage deviation high |
• High voltage cable • OBC fuse (high voltage battery) |
• Check the high voltage DC connector connection and terminal condition • Replace the ICCU |
|
| Inspect external AC power |
• Battery charger input voltage low • Battery charger input voltage high |
• External AC power system • EVSE • High voltage cable • OBC |
• Check the Electric Vehicle Charging Equipment (EVSE) and external AC power
(voltage, frequency) • Inspect the vehicle wire if the same fault code occurs after performing the charge by using the Electric Vehicle Charging Equipment (EVSE) that operates normally • Replace the ICCU if the same fault code occurs after vehicle wire check |
| V2L load inspection | • V2L mode AC output overload |
• Using high load electrical product • V2L connector • Indoor V2L outlet • OBC |
• Perform the V2L without the electrical product connection - DTC occurred : Vehicle inspection required - No DTC : Overload caused by previously used electrical products |
Low voltage DC/DC Converter (LDC)
| Item | Major Fault Code | Suspected Cause | Inspection |
| LDC inspection | • Output overvoltage fault | • LDC | • Replace the Integrated Charge Control Unit (ICCU) when the same problem occurs after the vehicle restarts |
| • LDC Voltage Control fault | |||
|
• Sensors fault - Current sensor offset calibration abnormality - Temperature sensor open circuit/short circuit/performance abnormality fault - Input / Output voltage sensor fault |
|||
| • PWM output fault | |||
| Vehicle inspection | • Output terminal path fault | • Wiring and connectors between the LDC output terminal and the high voltage junction box | • Check the LDC output circuit and cable connection condition |
| Coolant system fault |
• Coolant system • Low coolant • Electric Water Pump (EWP) |
• Inspect the Electric Water Pump (EWP) | |
| • Input over current fault |
• Auxiliary 12 V Battery discharged • 12 V electric component overload |
• Check the auxiliary 12 V battery discharge condition • Check abnormal operation or short circuit conditions of 12 V electric components |
Removal
• When working on high voltage system, the work should be performed by technicians who have completed the relevant training. A lack of understanding of the high voltage system can lead to serious accidents due to electric shock or electric leakage.
• When working on high voltage system or related components, make sure that you are familiar and comply with the "Safety Precautions, Cautions and Warnings." If you do not comply with the instructions, serious accidents due to electric shock or leakage may occur.
• When working on high voltage system, make sure to check the Personal Protective Equipment (PPE) and high voltage shut-off procedures.
Integrated Charging Control Unit (ICCU)
1.Shut off the high voltage circuit.(Refer to Battery Control System (Long Range) - "High Voltage Shut-off Procedures")
2.Drain the motor system coolant.(Refer to Cooling System - "Motor Coolant")
3.Remove the rear seat assembly.(Refer to Body - "Rear Seat Assembly")
4.Disconnect the cooling hose connector (A).
5.Disconnect the Low Voltage DC/DC Converter (LDC) ( + ) cable (A) after removing the bolt.
Tightening torque :7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.8 - 7.2 lb·ft)
6.Disconnect the Integrated Charge Control Unit (ICCU) connector (A).
7.Disconnect the ICCU High voltage power connector (A).
8.Disconnect the LDC ( - ) cable (A) after removing the bolt.
Tightening torque :7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.8 - 7.2 lb·ft)
9.Disconnect the combo charge inlet connector (A).
10.Remove the ICCU (A) after removing the bolts.
Tightening torque :7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)
11.Remove the ICCU pad (A).
Tightening torque :4.0 - 5.8 N·m (0.4 - 0.6 kgf·m, 2.9 - 4.3 lb·ft, 34.7 - 52.0 lb·in)
Integrated Charging Control Unit (ICCU) Fuse
1.Shut off the high voltage circuit.(Refer to Battery Control System (Long Range) - "High Voltage Shut-off Procedures)
2.Disconnect the Integrated Charging Control Unit (ICCU) power cable (A).
How to disconnect the connector
1)Release the locking clip (A) by pulling it.
2)Disconnect the connector by pushing the lever (A) in the direction of the arrow while pressing the locking clip (B).
3.Remove the ICCU fuse service cover (A) after removing the bolts.
Tightening torque : 7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)
4.Remove the ICCU fuse cover (A) after removing the bolts.
Tightening torque : 2.5 - 3.3 N·m (0.26 - 0.34 kgf·m, 1.9 - 2.5 lb·ft, 22.6 - 29.5 lb·in)
5.Remove the ICCU fuse (A) after removing the nuts.
Tightening torque : 4.4 - 5.4 N·m (0.45 - 0.55 kgf·m, 3.3 - 4.0 lb·ft, 39.1 - 47.7 lb·in)
Installation
• When working on high voltage system, the work should be performed by technicians who have completed the relevant training. A lack of understanding of the high voltage system can lead to serious accidents due to electric shock or electric leakage.
• When working on high voltage system or related components, make sure that you are familiar and comply with the "Safety Precautions, Cautions and Warnings." If you do not comply with the instructions, serious accidents due to electric shock or leakage may occur.
• When working on high voltage system, make sure to check the Personal Protective Equipment (PPE) and high voltage shut-off procedures.
1.Install in the reverse order of removal.
• Install the Integrated Charge Control Unit (ICCU) and fuse to the specified torque.
• If the ICCU is dropped, it may cause internal damage. (Do not reuse)
• Replace the ICCU fuse cover. (Do not reuse)
2.Fill the motor system coolant.(Refer to Cooling System - "Motor Coolant")
3.After replacing the ICCU and the related parts, vehicle should be checked that it charges normally.
