Reduction of Current and Rise in Temperature of Lithium Ion Battery by Combining with Lithium Ion Capacitor

We experimentally show that by parallelly connecting Lithium Ion Capacitor (LIC) with Lithium Ion Battery (LIB), the current of the LIB decreases, and the rise in temperature, a degradation factor in the quality, is reduced. The rise in temperature of the LIB is related to the current and the internal resistance of the LIB. We also show that the current distribution between LIB and LIC is calculated with high accuracy from a simple model, in which LIB and LIC are represented by a series circuit of internal resistance and capacitance.