Kia Soul EV: High Voltage Battery Control System / Main Relay Description and Operation
Main Relay is installed in the Power Relay Assembly (PRA) and it controls the high voltage line.
It connects the power between the high voltage battery pack and the high voltage joint box by the BMS ECU control signal.
But when the battery cell is swollen by overcharging, main relay and pre charge relay (PRA) are not operated by RAD.
The RAD is installed on each battery module and will not operate when the battery is normal.
[With High Voltage Battey Heater System]
1. Main Relay (+) 2. Main Relay (-) 3. Pre Charge Relay 4. Pre Charge Resistor 5. Battery Current Sensor 6. High Voltage Battery Heater Relay 7. High Voltage Battery Heater Fuse
[Without High Voltage Battery Heater System]
1. Main Relay (+) 2. Main Relay (-) 3. Pre Charge Relay 4. Pre Charge Resistor 5. Battery Current Sensor
Specification
ItemSpecificationONRated Voltage (V)450Rated Ampere (A)200Voltage Drop (V)Less than 0.1 (200A)CoilOperation Voltage (V)12Resistance (?)21.6 ~ 26.4 (20°C)
ItemSpecificationNo ...
System Circuit Diagram
With High Voltage Battery Heater System
Without High Voltage Battery Heater System
Circuit Diagram
Without High Voltage Battery Heater System
With High Voltage Batt ...
Other information:
Components
[A/T]
1. Console rear cover assembly2. Floor console assembly3. EPB switch assembly4. Wiring assembly5. Cup Hold assembly6. Console side pad [LH]7. Console side pad [RH]8. Supplement cup hold9. Ashtray10. Floor console mat11. Console storage box12. Hole cover
...
Component Location
1. Roof Trim Assembly
...