Cell-wise monitoring of Lithium-ion batteries for automotive traction applications by using power line communication: battery modeling and channel characterization
Cell-wise monitoring of Lithium-ion batteries for automotive traction applications by using power line communication: battery modeling and channel characterization
复制标题
使用电力线通信对汽车牵引应用的锂离子电池进行逐节监控：电池建模和通道表征
DOI：
10.1109/isplc.2014.6812322
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
K. Dostert
中科院分区：
文献类型：
--
作者：
Ichraf Ouannes;P. Nickel;K. Dostert
在用于汽车牵引应用的锂离子电池系统中，需要通信网络来实现监测和控制功能。我们认为电力线通信(PLC)是目前锂离子电池系统中使用的数据传输总线的一种很好的替代方案，其主要范围在于减少电缆线束和实现实质性的成本节约。我们提出了一种新的电池管理概念，该概念基于对电池的逐单元监控。为此，每个单元包括用于在现有电力线上进行数据传输的通信接口。本文研究了锂离子电池系统的特性，重点研究了电力线在1 MHz~100 MHz频段的传输特性。我们提出了一种基于电路的单电池模型，并对测量数据进行了拟合。该电池模型被用作(级联)大型电池系统建模的基本模块，并通过典型锂离子电池的阻抗分析进行了验证。由于信道容量受噪声的影响很大，为了获得与电力传动系统相连的电力电子器件的噪声特性，在电动汽车上进行了测量。
In Lithium-ion battery systems used for automotive traction applications a communication network is required for monitoring and control functions. We consider the power line communication (PLC) as a good alternative to data transmission buses used up to date in Lithium-ion battery systems, with the main scope consisting in reducing the cable harness and achieving substantial cost savings. We propose a novel battery management concept based on a cell-wise monitoring of the battery. For this, each cell comprises a communication interface for data transmission over the existing power line. In this paper, the properties of Lithium-ion battery systems are investigated with focus on the power line channel transfer characteristics in the frequency band 1 MHz to 100 MHz. We propose a circuit based model of a single cell, which has been fitted to measurement data. The cell model is used as basic block for the modeling of (cascaded) large battery systems and is validated by impedance analysis of typical Lithium-ion batteries. As the channel capacity is strongly affected by noise, measurements were conducted in electric vehicles in order to obtain the noise characteristics of power electronic devices connected to the electric power train.