Current Sensor Module (CSM)

We have developed Shunt and Hall based current sensors and a High Voltage Safety Unit for Battery Pack Monitoring in High Voltage Battery Management Systems for electric or hybrid vehicles.

The sensor module communicates information such as current, voltage, temperature to the Battery Management System ECU (Electronic Control Unit) via analog, CAN or Daisy chain interface.

Shunt - Hall

Close-up view of a current sensor module featuring a black rectangular housing with two large copper busbars extending from each side. The design includes a connector port on top for electrical interface, combining shunt and Hall effect measurement for precise current monitoring in automotive applications.

2-Channel Shunt

Compact two-channel shunt current sensor with a flat black housing and two copper busbars integrated for high-current measurement. A small connector port is visible on the top surface for signal output. The design emphasizes accuracy and robustness for electric vehicle power systems.

High Voltage Safety Unit

Close-up view of a high-voltage sensor unit with a black rectangular housing and integrated copper busbars. The component includes multiple connector ports in orange, yellow, and gray for electrical interface, highlighting its role in monitoring high-voltage circuits in electric vehicles.

Stand-alone Hall

Gray plastic Hall effect current sensor with a rectangular body and a hollow center for conductor placement. The design includes two mounting holes and a connector port on top, supporting dual-point current measurement for advanced automotive applications.

Shunt - Hall

CSM is a HV current sensor for hybrid and electric vehicle applications that are operating on high voltage.

Shunt and Hall based current sensing

Shunt and Hall based current sensing incl. galvanic separation
Fits to high voltage batteries up to 800 V
Supports up to ASIL D on system level
Current measurement range: ± 1500 A
Permanent current 400 A
Current measurement accuracy shunt ch: ± 0.6 %
Current measurement accuracy hall ch: ± 3.0 %
CAN and analog communication interface

2-Channel Shunt

CSM is a HV current sensor for hybrid and electric vehicle applications that are operating on high voltage.

Shunt based current sensing

Shunt based current sensing incl. galvanic separation
Fits to high voltage batteries up to 800 V
ASIL C with focus on precision on sensor level
Current measurement range: ± 2000 A
Current measurement accuracy ± 0,5 %
Permanent current 500 A
Overcurrent detection on CAN up to ± 5500 A
CAN communication

High Voltage Safety Unit (HVSU)

Focus on high voltage battery safety monitoring by measuring battery parameters such as current, voltage, temperature and isolation. Additional pyro-fuse driver with crash and overcurrent trigger, also used to avoid thermal runaway.

Shunt based Battery Pack Monitoring

Current: shunt based current sensing ± 2000 A
Voltage: n-channels, support diagnostics of relays
Isolation: value calculation / limit warning
Temperature: external sensor read-in
Overcurrent: tailorable threshold
up to ± 5500 A
Pyro-fuse driver: customized
Fits to high voltage batteries up to 1000 V
Supports up to ASIL D on system level
CAN or daisy chain communication

Stand-alone Hall

CSM is a HV current sensor for hybrid and electric vehicle applications that are operating on high voltage.

Hall based Current Sensing

Hall based current sensing
1 or 2 analog outputs
Variant I with one output
- Out 1: up to ±1200 A: ± 3 % accuracy
Variant II with two outputs
- Out 1: ± 100 A: ± 2% accuracy
- Out 2: ± 100 A till ±1200 A: ± 3 % accuracy
Busbar size up to 23 x 5 mm
Two M4 fixation points