Stochastic battery discharge in portable communication devices

C. F. Chiasserinia, Ramesh R. Rao
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引用次数: 12

Abstract

The objective of this work is to explore ways in which performance of battery systems can be enhanced through the use of energy-efficient battery management techniques. The phenomenon of charge recovery that takes place under pulsed discharge conditions is identified as a mechanism that can be exploited to enhance the capacity of a cell in a portable communication device. The bursty nature of many data traffic sources suggests that data transmissions in communication devices may provide natural opportunities for charge recovery. We model the data source as a stochastic process and let the cell discharge be driven by such a process. We use a model of a dual lithium ion insertion cell to identify the improvement to cell capacity that results from the stochastic discharge. The insight from this study leads us to propose discharge shaping techniques that tradeoff energy efficiency with delay in power supply.
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便携式通信设备中的随机电池放电
这项工作的目的是探索通过使用节能电池管理技术来提高电池系统性能的方法。在脉冲放电条件下发生的电荷恢复现象被确定为一种可以用来增强便携式通信设备中电池容量的机制。许多数据通信源的突发性质表明,通信设备中的数据传输可能为电荷恢复提供自然的机会。我们将数据源建模为一个随机过程,并让电池放电由这样一个过程驱动。我们使用双锂离子插入电池模型来确定随机放电对电池容量的改善。这项研究的见解使我们提出了在能源效率和供电延迟之间进行权衡的放电整形技术。
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