// Battery management and charge control

In order to operate lithium-ion batteries, it is necessary to monitor cell voltages and limit currents for charging and discharging in accordance with the temperature and state of charge. With these technologies, the charge and ageing state are not directly measurable variables, which means that algorithms are used to estimate the battery’s status. In addition, it is also necessary to determine the performance, remaining energy and service life to be expected in future for the operation of the battery.

The working group develops model-based algorithms for the estimation and forecasting as well as corresponding software for the specific BMS hardware.

Our services relating to the charging, management and operation of batteries cover the following algorithms, methods and components.

Range of services

  • Data collection, signal processing and cell monitoring, safety monitoring
  • Status estimation: state of charge (SOC) and state of health (SOH)
  • Forecasting: performance forecasting, available energy forecasting and/or lifecycle forecasting or range forecasting, service life forecasting
  • Diagnosis (failures, ageing) and prevention of ageing
  • Development of procedures and electronics for cell balancing
  • Charging procedures for fast charging with minimal ageing
  • Functional safety

Contact

Dr.-Ing. Marius Bauer, MBA
+49 731 95 30-588
Validation test for algorithms to estimate the status of a battery module (left) with a connected battery management system in a climate chamber. ZSW/Bosa
Validation test for algorithms to estimate the status of a battery module (left) with a connected battery management system in a climate chamber. ZSW/Bosa