基于STC89C52控制器的新能源汽车充电系统设计

Design of new energy vehicle charging system based on STC89C52 controller

新能源汽车充电桩内部有着特殊的匝结构,在充电过程中,等效匝数的导线会产生较大的抑制谐波,导致充电系统温度增高。针对该问题,设计了一种基于STC89C52控制器的新能源汽车充电系统。硬件部分以芯片STC89C52作为核心控制器,设计充电桩的组成结构,通过单片机连接两个石英晶体,稳定功能电路晶振频率,实现功能电路结构设计。软件部分规范充电电感正向状态,控制匝结构中的有效面积,控制一次正向电感产生的电感量,等效处理充电桩电感效应,完成新能源汽车充电系统设计。测试结果表明:所设计的充电系统充电速度较快,在充电开关器件上产生的损耗较小,充电时实际上升的温度较小,能够保证充电系统的正常运行。

The new energy vehicle charging pile has a special turn structure inside.During the charging process,the equivalent number of turns of the wire produces a large suppression of harmonics,resulting in a higher temperature of the charging system.To solve this problem,a new energy vehicle charging system based on STC89C52 controller is designed.With the chip STC89C52 as the core controller in the hardware,the structure of the charging pile is designed,two quartz crystals are connected through the single-chip microcomputer to stabilize the crystal oscillator frequency of the functional circuit and realize the design of the functional circuit structure.The software part regulates the forward state of the charging inductance,controls the effective area in the turn structure,controls the inductance value generated by the forward inductance,and equivalently handles the inductance effect of the charging pile to complete the design of the new energy vehicle charging system.The results show that the charging speed of the designed charging system is faster,the loss in the charging switch device is small,and the actual temperature rise during charging is small,which can ensure the normal operation of charging system.