High efficiency multi power source control constant current/constant voltage charger lithium-ion battery based on the buck converter

Abstract

<span lang="EN-US">This paper proposes the design and simulation of a constant current/constant voltage (CC/CV) multi-power source lithium-ion (Li-ion) battery charging system based on the Buck typology. The aim of this new design that uses the Buck converter with multiple numbers of sources, is to provide sufficient energy for battery charging, with an analog switch to select the active source that has priority to guarantee the continuity of the charging without interruption. As well as the transition between the charging modes is smooth that is provided by a multiplexed switcher. At the same time is increases the efficiency of the system by using fewer power dissipation components and low output ripple. The obtained results show that the Li-ion battery can be successfully charged without reducing its life cycle. In the global, those technics allow reducing financial costs. This allows such a solution to be well-positioned in the industrial market (electric vehicles (EV) and medical).</span>

Intelligent, optimal charging with MSSC and PCM protocols for healthy and long life on Li-ion batteries

“…Also, CC-CV charging with an appropriate rated current is no longer cost-effective, given the aging and SOH of the battery, which results in a non-rapid charge and high temperatures leading to battery destruction. In our conference paper, we proposed a method for optimal CC-CV charging using a combination of the PCM protocol responsible for finding the optimal charging current, the aim of which is to remedy the drawbacks above [5]. Experimental results showed an improvement in charging time at 16,8% and normal temperatures compared with conventional CC-CV.…”