Abstract
This paper proposes a wireless charging system powered by DC power module which is currently mature and applied to electric vehicle wired charging. The topological connection diagram between the power module and the main control unit is designed, and the main control unit based on AMR and FPGA is further developed. The CAN communication protocol between the main control unit and the DC power module is analyzed, and the communication protocol between the battery measurement unit and the main control unit is designed. Aiming at the need of three-stage charging of batteries, the charging control flow is analyzed, then the judgment of charging stage and the PID control of charging process are proposed. The prototype system of the laboratory is developed, and the usability and superiority of the wireless charging system based on adjustable DC power module are verified by charging experiments on a group of 1.2 kW power batteries.
Published Version
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