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# Kia Soul EV: EV Battery System / Description and Operation

Kia Soul EV (PS EV) 2015-2020 Service Manual / EV Battery System / Description and Operation

Description and Operation

Electric vehicle is powered by transforming electric energy into kinetic energy in the motor and high voltage battery. It can be recharged by high voltage energy via IBC or OBC. Electric motor not only has the role of driving the vehicle but also acts as an alternator to generate electric energy used to recharge the high voltage battery by regenerative braking. Operation principles among modules are as detailed below.

High Voltage Electricity Flow Diagram

[Start/ Acceleration/ Uphill Take-off]

Electric energy stored in high voltage battery pack assembly is used to generate drive force from the drive motor. Electric energy is transformed into kinetic energy and drive force is transferred to the wheels.

[Deceleration (Regenerative Braking)]

- Drive motor is used as an alternator and uses the kinetic energy generated during deceleration to recharge electric energy in the high voltage battery pack assembly.
- Activate: When the vehicle speed is over 10 km/h
- Not Activate: When the vehicle speed is less than 3 km/h

[Rapid Charge]

- Charge power : 500V, 200A
- Charge Type : Direct Current (DC)
- Charge time: Approx. 25 min.
- Charge Flow Diagram : Rapid Charge Stand -> High Voltage Battery System Assembly
- Charge Volume: 80% of High Voltage Battery''s SOC

[Nomal Charge]

- Charge power: 220V, 35A
- Charge Type : Alternating Current (AC)
- Charge time: Approx. 5 hr.
- Charge Flow Diagram : Normal Charge Stand -> ON-Board Charger (OBC) -> High Voltage Battery System Assembly
- Charge Volume : 95 % of High Voltage Battery''s SOC

[Indicator]

NO | RefSymbol | Name | Description | Color | Illumination | Signal Input | Control unit | Operation power
1 |  | Ready lamp | Request ON when vehicle is ready for driving. | Green | LED | CAN | VCU | IGN1
2 |  | Charge Lamp | Request to turn ON indication Lamp when charging is complete. | Green | LED | CAN | BMS | IGN3
3 |  | Charge Lamp | Request to turn ON indication Lamp when charging is in progress. | Red | LED | CAN | BMS | IGN3
4 |  | Power Down Lamp | In case of fault as indicated below, vehicle power output is limited, and Lamp ON is requested. - Overheating, or low SOC - Overheating and system error - If vehicle speed is limited due to ABS or brake system failure. - Cooling system failure | Yellow | LED | CAN | VCU | IGN1
5 |  | Service Lamp | - Request ON in case of VCU, MCU, BMS, LDC, FATC, or OBC failure is detected. - Turns ON at Start and then OFF after 3 seconds. | Yellow | LED | CAN | VCU MCU BMS LDC FATC | IGN1
OBC | IG1 & IGN3
6 |  | LOW Battery Lamp | Request Lamp ON when high voltage battery SOC is low. | Yellow | LED | CAN | BMS | IGN1
7 |  | Auxiliary 12V Battery Charge Lamp | In case of 12V auxiliary battery discharged, recharge device failure, or recharge system failure. Warning Lamp ON Request | Red | LED | CAN | LDC | IGN1
8 |  | RES Lamp (RBS: Regenerative Braking System) | Request ON in case of regenerative brake failure. | Yellow | LED | CAN | EBS | IGN1

##### Components and Components Location

Components Location 1. High Voltage Battery System Assembly2. Electronic Power Control Unit (EPCU) [LDC+Inverter+VCU]3. ON-Board Charger (OBC)4. High Voltage Joint Box5. High Voltage Cable6. Moto ...

##### System Diagram

System Diagram OBC: ON-Board Charger QRA: Quick Charge Relay Assembly PRA: Power Relay Assembly EWP: Electronic Water Pump EPCU: Electronic Power Control Unit [LDC ...

##### Other information:

### Kia Soul EV (PS EV) 2015-2020 Service Manual: AUX(Auxiliary) Jack Repair procedures

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

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