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Direct current load effects on series battery internal resistance

机译:直流负载对串联电池内阻的影响

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Battery energy capacity in an application system is determined by the amount of electrical energy spent to the load and time consumption. The system reliability depends on the supply of electrical energy from the battery as the power source. The energy capacity of the battery will ensure the services provided by the unit device or equipment. As an example, the UPS system provides clean, conditioned, and continues power supply for sensitive loads such as airlines computers, data centers, communication systems, and medical support systems in hospitals, etc. Therefore, it is important to estimate the accuracy of the remaining battery capacity at any time. Generally, the UPS system provides a regulated sinusoidal output voltage with switching operation and will give power to the main applications. Some UPS inverters work by utilizing power from the battery modules. The switching operation that operated by the device, will generate high frequency ripple. Many other battery applications can be analogized as a fixed load. This means that the load does not change until the energy capacity of the battery is reduced. Both static and dynamic loads will affect the battery's internal resistance. Some literatures describe the important factor of the battery modules system performance and the degradation rate associated with battery internal resistance. This paper explores how the decreasing battery capacity using the DC current load correspond to the increasing battery internal resistance. We do some experiments on discharging battery with switching load current at 10 second measuring time. We investigate and analyze the difference effect of the battery capacity on the internal resistance battery. We conclude that on continues battery loading will decrease the battery capacity which corresponds to the increasing the internal resistance value.
机译:应用系统中的电池能量容量取决于花费在负载上的电能量和时间消耗。系统可靠性取决于电池作为电源的电能供应。电池的能量容量将确保单位设备或设备提供的服务。例如,UPS系统可为敏感负载(如航空公司计算机,数据中心,通信系统和医院中的医疗支持系统等)提供干净,已调节并能持续供电。因此,估计电源的准确性非常重要。电池剩余电量随时可用。通常,UPS系统通过开关操作提供稳定的正弦输出电压,并将为主要应用供电。一些UPS逆变器通过利用电池模块的电源工作。器件操作的开关操作会产生高频纹波。可以将许多其他电池应用模拟为固定负载。这意味着直到电池的能量减少,负载才发生变化。静态和动态负载都会影响电池的内阻。一些文献描述了电池模块系统性能的重要因素以及与电池内阻相关的退化率。本文探讨了使用直流电流负载降低电池容量如何对应于增加电池内部电阻。我们进行了一些实验,以在10秒的测量时间通过切换负载电流使电池放电。我们调查并分析电池容量对内阻电池的不同影响。我们得出的结论是,持续不断的电池加载将降低电池容量,这与内部电阻值的增加相对应。

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