Hyundai Tucson: 48V Battery System - Description
Description
The Mild Hybrid Electric Vehicle (MHEV) uses hybrid power source (Engine, MHSG), so its fuel efficiency is relatively high and exhaust emission is very small compared to the traditional vehicle which uses only engine as power source. It consists of the engine, motor, 48V voltage battery and control modules.
In Engine supports the motor in case the vehicle needs more power (HEV Mode).
The Mild Hybrid Starter Generator (MHSG) not only drives the vehicle but also generates electric energy during regenerative braking for charging the 48 voltage battery.
MHEV Operation Mode and Power Flow
Component Location
- Mild Hybrid Starter Generator (MHSG)
- 48V Battery
- Power Cable
48V Battery Assembly
- 48V Battery Assembly
- Power relay assembly
- Main Fuse
- Main relay
- Battery Module Assembly
- BMS & LDC Assembly
- Battery Cooling Fan
1. 48V Battery Assembly
2. Power relay assembly
3. Main Fuse
4. Main Relay
5. Battery Module Assembly
6. BMS & LDC Assembly
7. Battery Cooling Fan
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48V Battery System - Removal
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the luggage board (A).
Disconnect the BMS ECU extension wiring harness connector (A).
Disconnect the inverter power cables (A).
Tightening torque
48V Battery System - Repair procedures (Removal)
Turn ignition switch OFF and disconnect the battery (-) terminal.
Remove the 48V battery assembly.
(Refer to 48V Battery System - "Repair procedures")
Remove the battery cover (A) after loosening the mounting bolts.
Tightenin
BMS ECU Terminal and Input/Output Signal
Terminal Function
Connector B10-A
Connector B01-B
Removal
Turn ignition switch OFF and disconnect the battery (-) terminal.
Remove the 48V battery assembly.
(Refer to 48V Battery System - "Repair procedures")
SEE MORE:
Auto Lighting Control System
Description
It's a system that uses illumination sensor to automatically turn ON the tail
lamp and head lamp based
on the change in surrounding environment's illumination condition. It activates
when the vehicle enters/
exits tunnel, o
IBU Diagnosis With Diagnostic Tool
In the body electrical system, failure can be quickly diagnosed by using
the vehicle diagnostic system.
(1) Fault Code Searching : Checking failure and code number (DTC)
(2) Data Analysis : Checking the system input/output data state
(3) A
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
