IBS: Intelligent battery sensor
The IBS is a mechatronic, intelligent battery sensor with its own microcontroller. The microcontroller is an element of the electronics module. The electronics module records the voltage, the current flow and the temperature of the battery. The following components are fitted in the electronics module:
- a precision resistor (resistor for current measurement)
- a temperature sensor
- evaluation electronics on a printed circuit board
| Item | Explanation |
|---|---|
| 1 | Negative battery terminal |
| 2 | Intelligent battery sensor |
| 3 | Battery earth lead |
The IBS continuously measures the following values on the battery:
- Terminal voltage
- Charge current
- Discharge current
- Battery temperature
For data transfer, the IBS is connected to the DME (Digital Motor Electronics), the DDE (Digital Diesel Electronics) or the EDME (Electrical Digital Motor Electronics) via a local interconnect network bus (LIN bus).
| Item | Explanation |
|---|---|
| 1 | Measurement of the battery voltage between the positive battery terminal and negative battery terminal |
| 2 | Temperature measurement of the battery (T) |
| 3 | Microcontroller (μC) in the intelligent battery sensor (IBS) |
| 4 | Digital Motor Electronics (DME), Digital Diesel Electronics (DDE) or Electrical Digital Motor Electronics (EDME) |
| 5 | Current measurement (A) [indirect, via the proportionally voltage drop (V) at the precision resistor (shunt)] |
| 6 | Negative battery terminal |
| 7 | Positive battery terminal |
| LIN bus | Local interconnect network bus (LIN bus) for transmission of the values to the DME, DDE or EDME |