Component Description For Battery Management System Control Unit - GF54.10-P-3012LFH
Model 222.004/104 with engine 651.9
Model 222.057/157 with engine 276
Model 222.163 with engine 276
Model 222.173 with engine 276
Shown on Model 222.057
Shown on Model 222.163
Shown on high-voltage battery module (except Model 222.163)
Shown on high-voltage battery module (Model 222.163)
Shown on high-voltage battery module (Model 222.173)
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 high voltage on-board electrical system assembly parts 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 |
|---|---|---|
| Circuit 15 | - | - |
| Circuit 30 | - | - |
| Circuit 30c (crash signal from rear pre-fuse box (F33)) | - | - |
| Crash signal | - | |
| Circuit 31 | - | - |
| Interlock circuit | Interlock circuit | - |
| High-voltage battery cell temperature sensors | - | - |
| - | High-voltage battery cooling system shutoff valve (Y19/1) | Model 222.057/157 |
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)) | - |
| 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 222.163, model 222.173 |
| DC/DC converter control unit (N83/1) (discharge current of high-voltage battery (A100g1)) | DC/DC converter control unit (N83/1) (discharge current of high-voltage battery (A100g1)) | Model 222.163 |
Input factors and output factors for following control units are sent or received by the power electronics control unit over LIN or CAN:
| Input parameters over the battery sensor LIN (LIN B15) | Initial parameters over battery sensor-LIN (LIN B15) | Supplemental information |
|---|---|---|
| - | Low-temperature circuit switchover valve 2 (Y73/2) | Model 222.163, model 222.173 |
| Input parameters over hybrid CAN (CAN L) | Initial parameters over hybrid CAN (CAN L) | Supplemental information |
|---|---|---|
| DC/DC converter control unit (N83/1) | DC/DC converter control unit (N83/1) | Only in model 222.163 |
| Charger (N83/5) | Charger (N83/5) | Only for model 222.163 and model 222.173 |
| 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) | - |
| Sound generator (H4/16) | Sound generator (H4/16) | Only on model 222.173 |
| Wiring diagram for battery management control unit ME05 (Plug-In) | PE54.10-P-2104-97SEB | ||
| PE54.10-P-2104-97SEA |