The Smart Energy Storage System is aimed to adapt and utilize different kinds of Lithium-ion batteries, so as to provide a reliable power source. To promote sustainability and environmental protection, the associated energy storage modules should be obtained from retired EV battery packs. Although these aging EV battery packs are unsuitable for automotive application, the relevant energy storing capability should remain at least 70% of their initial value. They would be indeed suitable for stationary energy storage because of this unique feature. To ensure safe operation, the Smart Energy Storage System must:
- execute a series of real-time parameters identification algorithms to keep track of and deduce associated physical parameters of batteries (e.g. ohmic (DC) resistance);
- conduct online estimation to compute non-measurable battery status (e.g. State-Of-Charge (SOC) – remaining capacity); and
- perform online charge equalization (i.e. active cell-balancing) to minimize the deviation of storing capacities amongst individual battery modules.
The aforesaid technical measures will undoubtedly (i) reduce discrepancies in energy storing capacities between different battery modules resulted from repetitive charge/discharge; (ii) enhance overall service life; and (iii) assure safe operation for energy storage application.
- can adapt various kind of Lithium-ion batteries
- real-time charge equalization for individual energy storage modules
- online parameters identification for energy storage modules
- high reliability, configurable energy storage capacity
- rooftop solar photovoltaic systems for home energy storage
- backup power for industrial equipment, such as 4G/5G cell towers, railway signaling systems, etc.