Image of AUMOVIO's semi-transparent eRTS sensor technology concept car. E-Motor Rotor Temperature Sensor (eRTS) technology offers more precise alternative to algorithm-based heat projection in permanent magnet synchronous EV motors.

Portfolio for current sensor modules

and high-voltage safety unit (HVSU)

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.

Introduction movie for current sensor module by AUMOVIO

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
HV current sensor for hybrid and electric vehicle applications that are operating on high voltage

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 including galvanic separation
  • Fits to high-voltage batteries up to 800 V
  • Supports up to ASIL D on system level
  • Current measurement range: ± 1,500 A
  • Permanent current 400 A
  • Current measurement accuracy shunt ch: ± 0.6%
  • Current measurement accuracy Hall ch: ± 3.0%
  • CAN and analog communication interface
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

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 including galvanic separation
  • Fits to high-voltage batteries up to 800 V
  • ASIL C with focus on precision on sensor level
  • Current measurement range: ± 2,000 A
  • Current measurement accuracy ± 0,5%
  • Permanent current 500 A
  • Overcurrent detection on CAN up to ± 5,500 A
  • CAN communication
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 (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 ± 2,000 A
  • Voltage: n-channels, support diagnostics of relays
  • Isolation: value calculation/limit warning
  • Temperature: external sensor read-in
  • Overcurrent: tailorable threshold
    up to ± 5,500 A
  • Pyro-fuse driver: customized
  • Fits to high-voltage batteries up to 1,000 V
  • Supports up to ASIL D on system level
  • CAN or daisy-chain communication
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

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 ±1,200 A: ± 3% accuracy
  • Variant II with two outputs
    • Out 1: ± 100 A: ± 2% accuracy
    • Out 2: ± 100 A till ± 1,200 A: ± 3% accuracy
  • Busbar size up to 23 x 5 mm
  • Two M4 fixation points
HV current sensor for hybrid and electric vehicle applications that are operating on high voltage

Stand-alone Hall

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