Component Description For Battery Management System Control Unit - GF54.10-P-3012RFH
Engine 274.920 in model 205.047/147/247, 253.954
Engine 274.920 in model 205.053/253
Engine 274.920 in model 253.354
Engine 651.921 in model 205.012/212
Engine 654.920 in model 205.013/213
Shown on model 205.012
Shown on high-voltage battery module
Shown on model 205.047
Shown on model 253.954
High-voltage battery module shown (model 205.047/147/247)
DC/DC converter
A DC/DC converter is integrated into the power electronics control unit, that converts the high voltage direct voltage (primary voltage) into 12 V direct voltage (secondary voltage) and the transfers this between the high-voltage on-board electrical system and the 12 V on-board electrical system.
DC/DC converter control unit (N83/1) The DC/DC converter control unit is installed as an independent component part in the vehicle. The DC/DC converter control unit converts a high voltage direct voltage (primary voltage) into a 12 V direct voltage (secondary voltage) and transfers this between the high-voltage on-board electrical system and the 12 V on-board electrical system.
Shown on high-voltage battery module (model 253)
Location
The battery management system control unit is integrated into the high voltage battery module.
Interlock circuit
The interlock circuit is used as contact protection to protect people against inadvertent contact with high-voltage components. The interlock is an anticipatory contact which opens a little before the high-voltage connections when opening a high-voltage connection. In this way timely discharging of the high voltage intermediate circuit is achieved by the control units of the high-voltage components.
In order to do this, a 12 V/88 Hz interlock signal is looped through all assembly parts of the high voltage on-board electrical system that can be removed or opened. To do this there is an electrical bridge in each removable high-voltage connection which interrupts the interlock circuit during removal of the high-voltage connection. The interlock circuit is also led switched in a series over the 12 V control units plug connection of the high-voltage components.
Tasks
The battery management system control unit operates in an electrical network with the sensors and actuators of the high-voltage on-board electrical system to provide battery management of the high-voltage system.
The battery management system constantly determines and monitors the following high-voltage battery data:
- Interlock circuit
- Voltage
- Current flow
- Temperature
- State of contactor
The battery management system control unit is connected over the hybrid CAN (CAN L) to the vehicle's CAN network and it exchanges data with other control units.
Input and output signals
- Direct input/output signals
- Output connectors
- CAN input/output signals
Input factors and output factors for the following components are read in or output over direct lines by the battery management system control unit:
| Input factors over a direct line | Initial parameters over a direct line | Supplemental information |
|---|---|---|
| Terminal 15 | - | - |
| Circuit 30 | - | - |
| Circuit 30c (crash signal from pyrofuse (F63)) | - | - |
| Crash signal | - | - |
| Circuit 31 | - | - |
| Interlock circuit | Interlock circuit | - |
| High-voltage battery cell temperature sensors (A100b2) | - | - |
| - | High-voltage battery cooling shutoff valve (Y19/1) | Model 205.012/212 |
The following component parts are connected through output connections to the battery management system control unit:
| Output connections + | Output connections - | Supplemental information |
|---|---|---|
| Power electronics control unit (N129/1) (discharge current from high-voltage battery (A100g1)) | Power electronics control unit (N129/1) (discharge current from high-voltage battery (A100g1)) | - |
| DC/DC converter control unit (N83/1) | DC/DC converter control unit (N83/1) | - |
| Power electronics control unit (N129/1) (charging current to high-voltage battery (A100g1)) | Power electronics control unit (N129/1) (charging current to high-voltage battery (A100g1)) | - |
| Charger (N83/5) (charging current to high-voltage battery (A100g1)) | Charger (N83/5) (charging current to high-voltage battery (A100g1)) | Model 205.047/147/247; 253 |
Input factors and output factors for following control units are sent or received by the power electronics control unit over LIN or CAN:
| Input factors over battery sensor-LIN (LIN B15) | Initial parameters over battery sensor-LIN (LIN B15) | Supplemental information |
|---|---|---|
| - | Low-temperature circuit switchover valve 2 (Y73/2) | Model 205.047/147/247; 253 |
| Input factors via hybrid CAN (CAN L) | Starting data via hybrid CAN (CAN L) | Supplemental information |
|---|---|---|
| DC/DC converter control unit (N83/1) | DC/DC converter control unit (N83/1) | - |
| Charger (N83/5) | Charger (N83/5) | Model 205.047/147/247; 253.354/954 |
| Powertrain control unit (N127) | Powertrain control unit (N127) | Contains signals of further control units which are connected via the CAN network. |
| Power electronics control unit (N129/1) | Power electronics control unit (N129/1) | - |
| Wiring diagram for battery management control unit | Engine 274.920 in model 253.354/954 | PE54.10-P-2104-97FBC | |
| Engine 274.920 in model 205.047/147/247 | PE54.10-P-2104-97FBB | ||
| Engine 651.921 in model 205.012/212 | PE54.10-P-2104-97FBA |