Smart Battery Pack for Electric Vehicles Based on Active Balancing with Wireless Communication Feedback
Smart Battery Pack for Electric Vehicles Based on Active Balancing with Wireless Communication Feedback
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DOI：
10.3390/en12203862
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发表时间：
2019-10-01
期刊：
影响因子：
3.2
通讯作者：
Teodorescu, Remus
中科院分区：
文献类型：
--
作者：
Ricco, Mattia;Meng, Jinhao;Teodorescu, Remus
本文介绍了智能电池组的概念。该智能电池组基于单个电池的无线反馈，能够应用于电动汽车应用。所提出的解决方案通过直接将电池管理系统集成在电池组中来增加电池的可用容量并延长电池的生命周期。电池单元通过半桥斩波电路连接，允许根据当前的充电状态插入或旁路单个电池。因此，这可以在电动汽车的典型充电和放电时间内实现整个电池组的平衡，并实现电池组的容错运行。提出了一种用于实现平衡方法的无线反馈。该解决方案减少了布线需求并简化了电池组的组装，使得直接的车外诊断成为可能。本文采用电池模拟器通过仿真和实验结果验证了所提出的智能电池组和无线反馈。
In this paper, the concept of smart battery pack is introduced. The smart battery pack is based on wireless feedback from individual battery cells and is capable to be applied to electric vehicle applications. The proposed solution increases the usable capacity and prolongs the life cycle of the batteries by directly integrating the battery management system in the battery pack. The battery cells are connected through half-bridge chopper circuits, which allow either the insertion or the bypass of a single cell depending on the current states of charge. This consequently leads to the balancing of the whole pack during both the typical charging and discharging time of an electric vehicle and enables the fault-tolerant operation of the pack. A wireless feedback for implementing the balancing method is proposed. This solution reduces the need for cabling and simplifies the assembling of the battery pack, making also possible a direct off-board diagnosis. The paper validates the proposed smart battery pack and the wireless feedback through simulations and experimental results by adopting a battery cell emulator.