The master is the higher-level control unit of the battery. It includes processing of signals, measurements, communication and control interfaces. One master can control up to 15 CSC boards.
The master is responsible for monitoring and controlling the entire battery system, as well as communicating with the other masters, CSC's and other components of the end system. It determines the battery State of Charge (SOC) and State of Health (SOH), and also monitors cell voltages, currents and temperatures, ensuring safe battery operation. Thus, the shutdown in case of over- or undervoltage, over- or undertemperature can be controlled, the balancing can be implemented and all measured parameters can be stored and processed.
A special feature of our Master is that in a multi-string setup no further Master is needed as Master-Master. One of the masters already present in the system can take over all the functions of the system master. Read more here.
The master uses input signals such as Enable, HV Enable, Charge Enable. HV Interlock. Furthermore, the master provides some additional unused GPIOs for user-defined functionalities.