中文摘要：

为了提高电动汽车充电器充电效率，保证充电装置安全可靠运行，对LLC半桥谐振网络的工作原理和拓扑结构进行了分析，设计了基于UC3846的LLC谐振半桥控制电路。同时，利用数字芯片ARM9实现主控芯片UC3846的变频设计，满足LLC半桥网络的全负载范围内软开关控制和充电电压、电流的实时变换需求以及整机系统的智能控制与保护，保证电动汽车充电器的高效率输出和可靠运行。最后给出了实验样机的测试结果，验证该设计的正确性和可靠性。

英文摘要：

In order to improve the efficiency of the electric vehicle charger and ensure the charging device safe and reliable operating, the basic structure and working theory of half-bridge LLC resonant network have be discussed and analysed. At the time, digital chip ARM9 series is used to satisfy frequency conversion of master chip UC3846. As a result, soft switching control at full load range is achieved on this electric vehicle charger system and it also meets the needs of charging voltage and current real time, as well as intelligent control and protection. Finally, the experimental prototype test results are provided to prove the accuracy and reliability of this circuit design.