Kia Niro: High Voltage Battery Control System / Main Relay (+) / (-) Description and operation
| Description |
Main Relay is divided into the positive (+) relay and negative (-) relay. It is integrated into the Power Relay Assembly (PRA) and connects the power supply line and ground line between the high voltage battery and the inverter in accordance with the BMS ECU control signal.
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1. High Voltage Power Terminal (-) 2. High Voltage Power Terminal (+) 3. Battery Current Sensor 4. Inverter Power Terminal (-) 5. Inverter Power Terminal (+) 6. Pre-Charge Resistor |
7. Main Relay (+) 8. Pre-Charge Relay 9. Main Relay (-) 10. Power Relay Assembly Connector (Battery current sensor signal input) 11. Power Relay Assembly Connector (Main relay control) |
| [PRA Operation Sequence] |
Main Relay (+) / (-) Specifications
Specification
Item
Specification
Contact
Rated Voltage (V)
450
Rated Current (A)
80
...
Main Relay (+) / (-) Schematic diagrams
Circuit Diagram
[B03-C] (Relay Control)
[B03-S] (Relay Control)
...
Other information:
Kia Niro (DE HEV) Owners Manual: The components of hybrid vehicle
1. Engine : 1.6L
2. Motor : 32kW
3. Transmission : 6DCT
4. Hybrid starter generator (HSG)
5. HPCU (Hybrid Power Control Unit)
6. High voltage battery system
7. Generative brake system
8. Virtual Engine Sound System (VESS)
The Hybrid battery uses high voltage top operate the electric motor ...
Kia Niro (DE HEV) Owners Manual: Brake operation
In an urgent situation, the braking system enters into the ready status
for prompt reaction against the driver’s depressing the brake pedal.
The AEB provides additional braking power for optimum braking performance,
when the driver depresses the brake pedal.
The braking control is aut ...
