HV DTemp IC-Sensors 
HV DTemp IC (Integrated Circuit) temperature sensors are used to measure temperatures in confined installation spaces, e.g. within the high-voltage battery at cell level. The flexible geometry allows easy adaptation to the respective requirements of the measurement task.
The HV DTemp IC temperature sensor is soldered onto an ultra-thin flexible circuit and measures temperatures on its bottom surface. The sensors can be encapsulated for protection and to ensure contact safety. This HV DTemp IC sensors can be installed in different geometries according to the application:
Single Sensors
Sensor Assembly
Sensors on a larger ultra-thin flexible circuit
With the different variants, the HV DTemp IC sensors can be applied to all common battery cell types (cylindrical cells, prismatic cells, pouch cells) as well as to other components in the HV battery (e.g. busbars). Due to the robust design, the sensors can also be pressed between battery cells.
Various connection cables (cable diameter from 2.8 ±0.3 mm to 0.42 ±0.05 mm) are available for connecting the single sensors and sensor assemblies. The cable ends are firmly soldered to solder pads on the flexible circuit and are also encapsulated.
| HV DTemp IC Sensor IC sensor encapsulated on ultra-thin flexible circuit | ||
|---|---|---|
| Measurement range | -40 °C to +125 °C | |
| Internal resolution | 16 Bit | |
| Measurement deviation | max. ±0.1 °C max. ±0.15 °C max. ±0.2 °C max. ±0.25 °C | (Operating temperature -20 °C to +50 °C) (Operating temperature -40 °C to +70 °C) (Operating temperature -40 °C to +100 °C) (Operating temperature -55 °C to +125 °C) |
| Contact safety | Working voltage up to 1,000 V DC | (at temperatures from -20 °C to +130 °C) |
| Dimensions | ||
| Sensor dimensions (w × h × d) | approx. 1.5 mm × 0.5 mm × 1 mm | |
| Flexible circuit dimensions Single sensor (w × h × d) | approx. 7 mm × 0.7 mm × 12 mm | |
| Distribution board dimensions Sensor assembly (w × h × d) | approx. 30 mm × 2 mm × 17 mm | |
The extremely small dimensions, the robust design and the different possible geometries of the IC sensors allow temperature measurements at almost all places in the HV battery: Between battery cells of any cell type, at busbars and other electronic components.
The simple application with IC sensors on ultra-thin flexible circuit also simplifies the installation of a large number of sensors, as required for the precise determination of temperature profiles.
The HV DTemp measurement system is suitable for all demanding temperature measurements with a large number of measurements points in confined installation spaces. The measurement system can be used to determine temperature profiles between the battery cells, especially in HV batteries, e.g. for the optimization and validation of HV batteries in electric or hybrid vehicles.
