Details

Autor(en) / Beteiligte

• Abdollahi, A.
• Han, X.
• Avvari, G.V.
• Raghunathan, N.
• Balasingam, B.
• Pattipati, K.R.
• Bar-Shalom, Y.

Titel

Optimal battery charging, Part I: Minimizing time-to-charge, energy loss, and temperature rise for OCV-resistance battery model

Ist Teil von

• Journal of power sources, 2016-01, Vol.303, p.388-398

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this paper we present a closed-form solution to the problem of optimally charging a Li-ion battery. A combination of three cost functions is considered as the objective function: time-to-charge (TTC), energy losses (EL), and a temperature rise index (TRI). First, we consider the cost function of the optimization problem as a weighted sum of TTC and EL. We show that the optimal charging strategy in this case is the well-known Constant Current–Constant Voltage (CC–CV) policy with the value of the current in the CC stage being a function of the ratio of weighting on TTC and EL and of the resistance of the battery. Then, we extend the cost function to a weighted sum of TTC, EL and TRI and derive an analytical solution for the problem. It is shown that the analytical solution can be approximated by a CC–CV with the value of current in the CC stage being a function of ratio of weighting on TTC and EL, resistance of the battery and the effective thermal resistance. •Closed form solution for minimizing weighted sum of time-to-charge and energy loss.•Semi-closed form solution by adding the temperature rise index to the cost function.•Approximating temperature rise effect as a constant heating equivalent resistance.•Analysis of efficiency performance of commercial batteries.