Abstract: With the increasing demand for power performance and fuel consumption of hybrid vehicle, bidirectional direct current to direct current (DC/DC) converters become one of the possible directions to meet user requirements. Based on the application of the bidirectional DC/DC converter in the hybrid vehicle, the paper analyzes the Honda power control unit (PCU) system, the different topological structures and the benefit of using the dual-way staggered topology. Analyze the problems that the bidirectional DC/DC converter may encounter in the hybrid system. And provides suggestions for the selection of bidirectional DC/DC converter for hybrid vehicle.

Key words: Bidirectional DC/DC converter; Hybrid system; Honda PCU system; Topology; Benefit

摘要： 随着用户对混合动力汽车的动力性能和油耗追求越来越高，搭载双向直流转直流 （DC/DC）变换器成为满足用户要求的可能方向之一。文章针对双向 DC/DC 变换器在混合动 力汽车中的应用，分别分析了本田动力控制单元（PCU）系统、不同的拓扑结构选型、双路 交错拓扑收益等，并分析双向 DC/DC 变换器在混动系统中可能遇到技术难点，为混合动力汽 车采用双向 DC/DC 变换器选择提供意见。

关键词: 双向 DC/DC 变换器；混合动力系统；本田 PCU 系统；拓扑；收益