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A new cell voltage equalizer topology for future plug-in hybrid electric vehicles (PHEV) or renewable energy storage has been proposed in this paper. This topology has fewer components compared to the conventional topologies found in the literatures, and therefore, it could reduce cost and fabrication complexity. This new circuit is based on a time shared fly-back converter, and any number of series...
A single-inductor dual-input dual-output (SIDIDO) buck regulator is presented for simultaneously regulating a battery charging current and a output DC voltage in portable battery management system. The proposed SIDIDO converter operates in the continuous-conduction mode for relaxing the peak current stress and thus enables the converter to deliver a maximum load power of 2.2 W. Moreover, the cross...
In this paper, a main circuit, a buck converter, together with an auxiliary circuit, bidirectional buck converter, is used to charge two Li batteries connected in series. By doing so, such an auxiliary circuit takes two roles in executing equalization between the two Li batteries. One role, together with the main circuit, to charge the second battery whose low-level terminal is connected to the ground...
This paper proposed a high-efficiency battery charging and discharging system for high-capacity single-body Li-ion battery. This system can work as battery formation system or battery test system. The main system structure includes a single-phase bi-directional PWM rectifier, dc-link, half-bridge converter with current-doubler synchronous rectifier as charging unit and interleaved pull-push converter...
A dynamic charge equalization scheme of series battery packs using multiple-winding transformer is presented in this paper. The proposed cell to cell type balancing control scheme is designed to be many bidirectional forward converter operated at discontinuous inductor current model for reducing the switching loss. Simulation and experimental results show that the proposed battery equalization scheme...
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