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.
Current Sensor Module
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 %C
- AN and analog communication interface
Current Sensor Module
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
Current Sensor Module
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
Current Sensor Module
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
Our sensor highlights
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