Abstract: As the user's pursuit of strong power and low fuel consumption of hybrid electric vehicles under different working conditions is getting higher and higher, the booster module is equipped, which is bidirectional direct current to direct current (DC/DC) converters become can meet the user's requirements. This paper mainly aims at the design changes of four dimensions of motor, electronic control, speed ratio matching and strategy optimization after the booster module is applied to the hybrid electric vehicle, and analyzes the design logic of the hybrid electric driving force system and describes the technical difficulties that may be encountered in the application of each subsystem after the booster module is added. Some design considerations are put forward for improving power performance and fuel consumption of hybrid electric vehicles by using booster module.

Key words: Booster module; Hybrid power system; Drive motor; Motor control; Speed ratio matching; Strategy optimization

摘要： 随着用户对混合动力汽车在不同工况下的强动力性和低油耗追求越来越高，搭载升压 模块，即双向直流转直流（DC/DC）变换器能满足用户要求的一种技术方案。文章主要针对 升压模块应用在混合动力汽车后，其中电机、电控、速比匹配、策略优化四个维度的设计变 化，并分析在混合电驱动力系统中的设计逻辑以及阐述了增加升压模块之后各子系统应用中 可能遇到的技术难点，为混合动力汽车采用升压模块提高动力性和油耗提出一些设计思考。

关键词: 升压模块；混合动力系统；驱动电机；电机控制；速比匹配；策略优化