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Advanced breathing cap (eABC)

The advanced breathing cap (eABC) combines battery breathing, venting and thermal run-away detection by hydrogen sensing in one product.

Use of an H2 gas sensor for fast and stable detection.

Our compact solution for enhanced battery safety by early fault detection, real time pressure equalization and compliance with BEV safety regulations.
eABC - Advanced Breathing Cap

Benefits and features

  • Enhanced passenger safety and support of regulations (5-minute early detection), even when the vehicle is parked
    • Gas detection near the breathing cap is more reliable and effective compared to stand-alone sensors
      • Mounting outside the battery enclosure simplifies maintenance and replacement
        • Space-saving design and cost-effective solution
          • Can avoid risks of integrated sensorics in BMC/other ECUs (e.g., heat and gas-ingress risks)
            • Allows air exchange to balance internal and external pressure, water and dust protection
              • Breathing cap design and sensing can be customized based on battery pack volume and venting design
              eABC – advanced breathing cap (front view)
              Advanced breathing cap (eABC) front view

              Technical data

              • Sensorics:
                • Thermal conductivity based H2 gas sensor
                • Fast response time < 100 ms
                • H2 measurement range: 0% to 16%
                • I2C or CAN communication interface to BMS
              • Breathing/venting:
                • Airflow: 3 L/min @ 25 mbar
                • Emergency degassing: 400 mbar
                • Protection class: IP67 or IP68
                • Operating temperature: -40 °C to +105 °C
              Find here the information sheet

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