A CLLC/S Compensated Wireless Charging System with Constant Output Characteristics

During the charging of the battery, its constant current and constant voltage charging output and zero phase angle conditions are limited by changes in the equivalent load of the battery, making it difficult to achieve them simultaneously. Therefore, this paper proposes a new CLLC/S topology and its corresponding parameter tuning method. In this system, CC and CV charging modes can be obtained at two different frequency points respectively and achieve zero phase angle conditions. At the same time, the receiver adopts a minimalist design, which is in line with the WPT system principle of keeping the receiver compact and portable. Finally, the feasibility of the system was proved through simulation verification.