High-voltage batteries are of central importance for electric vehicles as an energy source. Their temperature behaviour must be studied in detail and temperature models must be verified. The new HV DTemp measurement system enables temperature measurements within high-voltage batteries in a completely new dimension.
The CSM HV DTemp measurement system is designed for the digital and precise measurement of up to 512 temperature measurement points via a single cable connection to the HV DTemp Central Unit. A HV DTemp measurement system consists of the three components HV DTemp-4 Sensor Modules, HV DTemp-M64 Controller Modules and HV DTemp-P Central Unit.
The HV DTemp-4 Sensor Module consists of up to eight very thin IC (Integrated Circuit) temperature sensors, which are placed either individually or as a group on an ultra-thin flexible circuit film. This allows a plannable and reproducible arrangement of the sensors, so that the positions between different battery cells are exactly repeated.
Digital signals from the Sensor Modules are received by the HV DTemp-M64 Controller Modules and transmitted to the central unit. The digital data transmission offers great advantages here, as interference has only a minor effect on the sensor cables and measurement data transmission.
Each sensor is provided with its own CAN ID by the HV DTemp-P Central Unit, which makes it easier to assign and verify proper operation. The measurement data is transferred to the DAQ software via a CAN bus.