Zhiwei Zhao, Wei Dong, et al.
IEEE Trans Ind Electron
Unbalanced battery cells are known to significantly degrade the performance and reliability of a large-scale battery sys- Tem. In this paper, we exploit emerging reconfigurable bat- Tery packs to mitigate the cell imbalance via the joint consid- eration of system reconfigurability and State-of-Health (So- H) of cells. Via empirical measurements and validation, we observe that a significantly larger amount of capacity can be delivered when cells with similar SoH levels are connected in series during discharging, which in turn extends the sys- Tem operation time. Based on this observation, we propose two SoH-aware reconfiguration algorithms focusing on fully and partially reconfigurable battery packs, and prove their (near) optimality. We evaluate the proposed SoH-aware re- configuration algorithms using both experiments and simu- lations. The algorithms are shown to deliver about 10-30% more capacity than SoH-oblivious configuration approaches.
Zhiwei Zhao, Wei Dong, et al.
IEEE Trans Ind Electron
Liang He, Linghe Kong, et al.
IEEE TMC
Yuanchao Shu, Peng Cheng, et al.
ACM TOSN
Desheng Zhang, Tian He, et al.
SenSys 2012