4W Electronics
Our 4w Electronics business works on the vision to ensure Road safety for everyone. Our product portfolio combines sensing and smart lighting control to enable safe mobility for OEMs, tier I suppliers, Fleet management and after-market.
Our product portfolio encompasses lighting electronics, light engines for projector modules, headlamp control units and Autonomous driving assistance systems or camera systems.
Our Varroc Vision systems are equipped to sense and classify complex road and in-cabin conditions, light control systems ensure state of the art lighting systems for improved night vision and Light engines enables advanced lighting functions by energy-efficient light sources.
Working on the automotive macrotrends of autonomous, connected, electric and shared mobility we strive to work towards scalable, secure, safe, and transparent products and solutions.
Battery Management System
BMS is an embedded system which monitors and protects battery pack while enabling it to supply power to power train and peripherrals.
FEATURES:
- Dual battery protection: On board: MOSFETS, Off board: GPIO for Contactor.
- On board current measurement.
- Software configurable.
- Power limit estimation.
- Cell voltage monitoring: 14 NMC cells can be with +/- 4.2 mV error.
- Cell balancing current: 200mA.
- Battery current monitoring: Peak measurable current – 160A for 1200s with an error of 1%.
- Battery temperature monitoring: 4 sensors with an accuracy +/- 2.53 deg in the range of (-30 deg to 125 deg) with GPIO for external fan.
- BMS board temperature monitoring: 2 sensors with an accuracy of +/- 2.53 deg in the range of (-30 deg to 125 deg).
- State of charge estimation: accuracy of >98%.
- State of health monitoring
- Software configurable using CAN communication.
