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Road Test of Selected Electrical Parameters of the Hybrid Vehicle Accumulation System
IEEE Transactions on Vehicular Technology ( IF 6.8 ) Pub Date : 2020-12-10 , DOI: 10.1109/tvt.2020.3043852
Konrad Prajwowski 1 , Wawrzyniec Golebiewski 1 , Maciej Lisowski 1 , Jacek Eliasz 1
Affiliation  

Increasing energy efficiency in hybrid electric vehicles is associated with the possibility of recovering some of the kinetic energy in the delayed movement phase and converting it to electricity, which can be used to charge batteries. It is structurally possible to implement by using an electric machine operating as a generator and an energy accumulation system. In addition to the widely used lithium-ion energy storage systems, nickel-metal hydride energy accumulation solutions are also an alternative. Battery systems are characterized by specific electrical parameters which include, among others: electrical capacity, open circuit voltage (cells), discharge/charge current, battery state of charge or power of the energy storage system. The article was aimed at determining these parameters of the nickel-metal hydride energy storage system. The actual characteristics of the above-mentioned electric battery indicators were obtained through the measurements carried out during road and bench tests with the use of research apparatus and research object (Toyota Prius the third generation). The tests showed that the battery voltage varied slightly from 203.42 … 203.98 V (cell voltage −14.49 … 14.57 V, link voltage −1.211 … 1.214 V). On the other hand, the values of the charge/discharge current were in a wide range (−87.57 … 132.74 A) and depended on road conditions. This parameter was largely dependent on the torque balance of electric machines (generator, electric motor), but it also had an impact on the battery state of charge and power. To determine the parameters, an electric model of the Three RC Network Model, powered from an open-circuit voltage source and consisted of three resistors and three capacitors, was used. This electric model was characterized by high accuracy (up to 2.93%) and described the behavior of the nickel-metal hydride system of energy accumulation in real conditions in a good way.

中文翻译:

混合动力汽车蓄能系统所选电气参数的路试

混合动力电动汽车中能源效率的提高与在延迟运动阶段恢复一些动能并将其转换为电能(可用于为电池充电)相关。在结构上可以通过使用作为发电机运行的电机和蓄能系统来实现。除了广泛使用的锂离子储能系统之外,镍氢氢化物储能解决方案也是一种选择。电池系统的特征在于特定的电气参数,其中包括:电容,开路电压(电池),放电/充电电流,电池的充电状态或能量存储系统的功率。该文章旨在确定镍氢氢化物储能系统的这些参数。上述电池指示器的实际特性是通过使用研究设备和研究对象(丰田普锐斯第三代)在道路和长凳测试期间进行的测量获得的。测试表明,电池电压从203.42…203.98 V(电池电压-14.49…14.57 V,链接电压-1.211…1.214 V)略有变化。另一方面,充电/放电电流的值在宽范围内(−87.57…132.74 A),并取决于道路状况。该参数在很大程度上取决于电机(发电机,电动机)的扭矩平衡,但它也影响电池的充电状态和功率。为了确定参数,使用三RC网络模型的电气模型,使用了一个由开路电压源供电的电源,该电源由三个电阻器和三个电容器组成。该电模型具有很高的精度(高达2.93%),并很好地描述了镍-金属氢化物系统在真实条件下的能量累积行为。
更新日期:2021-02-16
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