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- Title
Active balancing of lithium-ion battery cells using WPT as an energy carrier.
- Authors
Lizhou Liu; Wenbing Sun; Peibang Han; Ruikun Mai; Zhengyou He; Luo Bo
- Abstract
This study develops a novel equaliser by combining wireless power transmission (WPT) and switch array for seriesconnected batteries. The physical isolation achieved by WPT can offer unique benefits that traditional equalisers can hardly provide. Parameters of the WPT system are properly designed to achieve an equivalent constant-current output, which can maximise the speed of balance and ensure the health of batteries. This methodology can ensure each battery is connected independently to the inverter through the switch array circuit. Therefore, balancing for either a single battery or multiple batteries can be achieved. In the experiment, the prototype system is built. Experimental results show that the proposed equalisation system can achieve high overall system efficiency (above 87.2%) when balancing four series-connected battery modules.
- Subjects
WIRELESS power transmission; SWITCHING circuits; LITHIUM cells
- Publication
IET Power Electronics (Wiley-Blackwell), 2019, Vol 12, Issue 10, p2578
- ISSN
1755-4535
- Publication type
Article
- DOI
10.1049/iet-pel.2018.6177