Kia Soul EV: High Voltage Battery Control System / Pre-charge Relay Description and Operation

Kia Soul EV (PS EV) 2015-2020 Service Manual / EV Battery System / High Voltage Battery Control System / Pre-charge Relay Description and Operation

Description

Installed in the Power Relay Assembly (PRA), the Pre-charge Relay connects high voltage circuit when pre-charging the inverter capacitor.

When the IG is ON, the current coming through the pre-charge relay and the resistor charges the capacitor in the inverter and when the capacitor is fully charged, the pre-charge relay turns OFF.

[With High Voltage Battery 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

Operation

Pre-charge Relay Specifications

Specification ItemSpecificationONRated Voltage(V)450Rated Ampere(A)10Voltage Drop(V)Less than 0.5 (10A)CoilOperation Voltage(V)12Resistance(?)104.4 ~ 127.6 (20°C) ItemSpecificationRemarkM ...

Pre-charge Relay Schematic Diagrams

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:

Kia Soul EV (PS EV) 2015-2020 Service Manual: Specifications

Tightening Torque ItemNmkgf.mlb-ftPassenger Airbag (PAB)7.8 ~ 11.80.8 ~ 1.25.9 ~ 8.6Curtain Airbag (CAB)Bolt7.8 ~ 11.80.8 ~ 1.25.9 ~ 8.6Nut3.9 ~ 5.90.4 ~ 0.62.9 ~ 4.4Side Airbag (SAB)5.9 ~ 7.80.6 ~ 0.84.3 ~ 5.8SRSCM7.8 ~ 9.80.8 ~ 1.05.7 ~ 7.3Front Impact Sensor (FIS) Mounting nut7.8 ~ 9.80.8 ~ ...

Kia Soul EV (PS EV) 2015-2020 Service Manual: Specifications

Specification High Voltage Shut-off Procedures ? Specification ItemSpecificationRemarkCapacitor Voltage between the inverter terminalsLess than 30VCheckable by multi tester High Voltage Battery Handling Guide ? Specification ItemSpecificationRemarkSafety Plug Cable Resistance (?)Le ...