Author(s)

Kyoji Nakajo^1*, Shinji Aoki¹, Takashi Yatsuda¹, Shuji Takahashi¹, Kazuhiro Motegi¹, Yasuhiro Kobayashi², Yoichi Shiraishi^1,2

¹Department of Science and Engineering, Gunma University, Ota-shi, Japan.
²Realize Computer Engineering, Co., Ltd., Takasaki-shi, Japan.

For several years now, electric vehicles (EVs) have been expected to become widely available in the micro-mobility field. However, the insufficiency of such vehicles’ battery-charging and discharging performance has limited their practical use. A hybrid energy storage system, which comprises a capacitor and battery, is a promising solution to this problem; however, to apply model-based designs, which are indispensable to embedded systems, such as the electronic control units used in EVs, a simple and accurate capacitor model is required. Within this framework, a lithium-ion capacitor (LIC) model is proposed, and its charging and discharging performances are evaluated against an actual LIC. The model corresponds accurately to the actual LIC, and the results indicate that the proposed LIC model will work well when used with Model-Based Design (MBD).

Model, Capacitor, Lithium-Ion, Model Based Design, Electric Vehicle, Battery, Hess

Nakajo, K. , Aoki, S. , Yatsuda, T. , Takahashi, S. , Motegi, K. , Kobayashi, Y. and Shiraishi, Y. (2016) Modeling of a Lithium-Ion Capacitor and Its Charging and Discharging Circuit in a Model-Based Design. Circuits and Systems, 7, 11-22. doi: 10.4236/cs.2016.71002.