Electric Vehicle Battery System

On-Board Charger (OBC) Schematic Diagrams

~1min read

Schematic Diagrams

Input Connector (AC)
Terminal Description Specification
Current (Normal) Voltage (Maximum)
1 Phase Voltage (L1)_220 V AC 33 A 310 V AC
2 Ground
3 Phase Voltage (L2)_220 V AC

Output Connector (DC)
Terminal Description Specification
Current (Normal) Voltage (Maximum)
1 High Voltage Battery (-) 25 A 495 V DC
2 High Voltage Battery (+)
3 High Voltage Interlock Pin
4 High Voltage Interlock Pin

Signal Connector
Terminal Description Specification
Current (Normal) Voltage (Maximum)
1 Ground 1 A 0 V
2 IG3 18 V
3 Connection Determination (EVSE) 5V
4 Control Pilot (EVSE) 12V
5 Relay Operation 18 V
6 CAN Low 1.5-2.5 V
7 CAN High 2.5-3.5 V
8 Charge Status Indicator (Right) 18 V
9 Charge Status Indicator (Center) 18 V
10 Charge Status Indicator (Left) 18 V
11 CP, PD Protective Ground 0 V
12 Auxiliary Battery 12 V (+) 18 V

Test yourself

A quick Kia Soul EV Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.