Dr. Ichiro Maruta, Associate Professor

Development of Parameter Sensitivity Plot and Application to Modeling of Lithium-ion Secondary Batteries

Dr. Ichiro Maruta
Associate Professor
Department of Aeronautics and Astronautics,
Graduate School of Engineering, Kyoto University

*The organization and the title are those when awarded

Research summary

In the future society, such as those described in Industry 4.0, systems will consist of highly complex networks with many components and subsystems. To properly control such complicated systems, it is necessary to establish a methodology for modeling the system behavior without losing meaningful essences but yet simple enough. Therefore, a technology for finely evaluating the balance between the simplicity and the accuracy of the model is required.

This unique viewpoint allowed Dr. Maruta to invent “parameter sensitivity plot.” This method visualizes the balance between simplicity and preciseness of the model in the frequency domain and enables us to finely evaluating it. He then applied it to Lithium-ion battery (LIB) and developed a precise and reliable model for estimating the state of health and charge of LIB.

The developed technology is expected to contribute not only to LIB but also to a wide range of modeling problems of the complicated systems which will be faced in the future society.