Comparison of Nonlinear Filtering Methods for Estimating the State of Charge of Li₄Ti₅O₁₂ Lithium-Ion Battery

Figure 4

Profiles of the HPPC test: (a) battery current of one cycle; (b) battery terminal voltage (SoC = 0.8); (c) battery current for ten cycles; and (d) complete voltage profile.

(a)

(b)

(c)

(d)