Design of Lithium-Ion Battery Cell Balancing with Cell-to-Cell Charging Mode Technique in A Battery Management System (BMS)
Abstract
This paper discusses the balance between lithium-ion battery cells in the BMS (Battery Management System) of an electric car. The unbalanced condition during the battery charging process is caused by one of the batteries that are fully charged while part of it is still half or even only half-full. This condition can cause the battery to heat up quickly, and pass the SOA (safety of area) condition, causing a fire in the battery. In this study, the cell-to-cell technique is proposed to balance the charge to each battery cell to approximate the same condition. The simulation results show that the use of cell-to-cell balancing technique can balance the battery charge.
Keywords: Balancing, Cell, Battery, Lithium-ion, Cell-to-cell, BMS.
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