This paper aims to present the fast battery charging system with low power dissipation.
In this study, a battery power management system is presented, which involves field-programmable gate array (FPGA) controller, voltage monitoring, buck converter and a reconfigurable charge switching circuit. The voltage of each battery is continuously sensed and recorded with a differential method. Based on the sensed voltage, the FPGA controller determines the appropriate charging mode. A reconfigurable charge circuit is proposed to optimize the charging process and save charging energy. This circuit enables the early skipping of fully charged batteries, lowering the supply charge voltage from the buck converter and thereby reducing the charging power. This helps prevent overcharging, extending the battery’s lifespan.
In experiments with four battery modules, the proposed approach achieved a reduction in charging power ranging from 25% to 75%. This battery management system, integrated with FPGA control and a reconfigurable charge circuit, provides efficient and optimized charging for batteries, contributing to energy savings and extending the battery lifecycle.
The proposed approach achieved a maximum saving of about 75% in charging power.
A new concept of battery charging architecture is presented, which will be benefit for the application of energy storage system and electric vehicles. Also, this concept can save the energy during charge period.
