Smart Battery Control System Based on a Charge-equalization Circuit for an Advanced Dual-Cell Battery for Electric Vehicles

  • Framework: FP7
  • Type: IP
  • Status: Completed
  • Category: Electrification (FEV/PHEV)
  • End Date: 30/04/2014
  • Vehicles: Passenger cars
  • Website:

SuperLIB focuses on smart control system solutions for batteries. To enhance the overall performance, the battery consists of HP and HE cells. This combination together with a smart control strategy and a highly integrated package significantly improves the lifetime, the reliability and the cost/performance ratio of the battery. The electronic architecture required for the connection of the HP and HE cells enables an efficient management of the current and charge distribution. The architecture will include electronic circuits for charge equalization and DC-DC converters utilizing advanced techniques of zero-current and zero-voltage switching.

Safety and control system relevant temperature sensors will be developed for an improved thermal management, thus a potential thermal runaway of a single battery cell can be avoided through early detection of local overheating. In addition this will increase the accuracy of the battery state estimation, which allows the utilization of a wide range of the battery state-of-charge. Thus, the battery can be smaller and cheaper with still providing the required usable energy content and power performance.