Realising Serial Hybrid Energy Storage Systems (sHESS) by implementing Switching Circuits on Battery Cell Level

摘要

One approach to influence the current flow through the battery pack is to implement switching circuits. Two switching elements are necessary for each cell-stage to be bypassed or activated. This allows active load management. Thus the utilisation of the battery pack can be maximised in every situation. Adaptive control algorithms allow several kinds of operating strategies. Furthermore, dynamic output voltage can be generated to serve the best output for the downstream voltage level. A battery pack with an additional connection at its central point allows the generation of sine-shaped output voltages. As consequence of individual load management, different types of batteries or even different kinds of energy storages can be interconnected to built serial hybrid electrical energy storages. This novel approach allows precisely tailored battery packs for each application to enhance performance and energy supply.