Description and Operation

Description and Operation

The electric vehicle operates by converting electrical energy into kinetic energy in the drive motor and high voltage battery. It can be recharged with high voltage energy through the IBC or OBC. The drive motor not only drives the vehicle but also acts as an AC generator to generate electrical energy used to recharge the high voltage battery through regenerative braking. The operating principles of each module are described in detail below.

High Voltage Electrical Block Diagram

[Start/ Acceleration/ Hill Climbing]

Electrical energy stored in the high voltage battery pack is used to generate driving force from the drive motor. Electrical energy is converted into kinetic energy, and the driving force is transmitted to the wheels.

[Deceleration (Regenerative Braking)]

- The drive motor operates as an AC generator and uses the kinetic energy generated during braking to recharge electrical energy into the high voltage battery pack. - Activation: When vehicle speed exceeds 10 km/h. - Deactivation: When vehicle speed is less than 3 km/h.

[Rapid Charging]

- Charging power: 500 V, 200 A - Charging type: Direct current (DC) - Charging time: Approx. 25 min. - Charging flow: Rapid charging station -> High voltage battery system assembly - Charging amount: 80% SOC of high voltage battery

[Normal Charging]

- Charging power: 220 V, 35 A - Charging type: Alternating current (AC) - Charging time: Approx. 5 hours - Charging flow: Standard charging station -> On-Board Charger (OBC) -> High voltage battery system assembly - Charging amount: 95% SOC of high voltage battery

[Indicator]

NO	RefSymbol	Name	Description	Color	Illumination	Input Signal	Control Unit	Ready Indicator
1		Ready lamp	Illuminates when the vehicle is ready to drive.	Green	LED	CAN	VCU	IGN1
2		Charging indicator	Illuminates after charging is completed.	Green	LED	CAN	BCM	IGN3
3		Charging indicator	Illuminates during charging.	Red	LED	CAN	BCM	IGN3
4		Power Down Indicator	In case of a malfunction as described below, vehicle output is limited and the lamp illuminates. - Overheating or low SOC - Overheating and system error - If vehicle speed is limited due to an ABS or brake system malfunction. - Cooling system malfunction	Yellow	LED	CAN	VCU	IGN1
5		Service Lamp	- Illuminates when a malfunction is detected in VCU, MCU, BMS, LDC, FATC or OBC. - Illuminates at startup, then turns off after 3 seconds.	Yellow	LED	CAN	VCU MCU BMS LDC FATC	IGN1
							OBC	IG1 and IG3
6		Low Battery Indicator	Illuminates when the high voltage battery SOC is low.	Yellow	LED	CAN	BCM	IGN1
7		12 V Battery Charging Warning Lamp	Illuminates in case of 12 V auxiliary battery discharge, charging device failure, or charging system failure.	Red	LED	CAN	HCU	IGN1
8		RES Lamp (RBS: Regenerative Braking System)	Illuminates when the regenerative braking system malfunctions.	Yellow	LED	CAN	ABS	IGN1