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This digest proposes an individual cell voltage equalizer using selective two current paths for series connected lithium-ion battery strings. In the proposed equalizer, a central equalization converter is shared by every battery cells through the cell selection switch, instead of a dedicated charge equalizer for each cell. The central converter is utilized as a controllable current source by a modified...
In this paper, a new battery equalizer applying two-switch flyback topologies is proposed. Since the proposed circuit is based on two-switch flyback structure, voltage stress on the switches can be clamped at the battery stack voltage level. Furthermore, the number of active devices is minimized by using a common switch and a common clamping diode. The operational principle, theoretical analysis,...
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