【摘要】 现今充电器大多数工作于高频开关模式,因此需要新的电池模型来解释蓄电池在该模式下的充电过程中出现的新特点。为研究蓄电池高频下的瞬态特性及其对充电器工作状况的影响,建立了一个动力型蓄电池充电过程高频瞬态模型。不同于现有蓄电池模型多偏重于描述电池的容性特性,该模型串联加入了一个电感L来描述高频状况下蓄电池的感性特性。依据该模型,对蓄电池充电过程进行了仿真。结果验证了该模型的正确性。基于该模型的系统仿真表明了蓄电池高频瞬态特性对高频开关型充电器输出特性的影响,也可为其优化设计提供准确的依据。更多还原

【Abstract】 Since most battery chargers are now switched at high frequencies, new battery models are needed to account for the different battery characteristics during high frequency charging. This paper presents a high frequency transient model for a traction battery during charging to study the battery transient dynamics at high frequencies and its impact on the working state of the charger. An inductance was added to the model in series to describe the inductance characteristic at high frequencies, which differs from most current battery models which emphasize describing the capacitance characteristic of the battery. The model was verified by comparing simulations with laboratory measurements. The system simulations describe the impact on the output characteristics of the high frequency switching mode charger and provide a reliable method for design optimization.更多还原