便携式仪表锂电池充电管理和电量检测的实现

Realization of Charge Management and SOC in Lithium-Ion Batteries of Portable Instruments

为防止电池被过充,提升电池组的寿命、效率和安全性,分析了锂离子电池的特性,针对某种便携式仪表的应用需求,设计了锂离子电池组充电管理模块,提出了满足仪表应用精度要求的剩余电量检测方案。介绍了充电管理模块的硬件设计和剩余电量检测的具体实现方案,并在某种便携式仪表上进行了实验验证。结果表明,该充电管理模块可以实现对电池组精确的充电管理,提出的剩余电量检测方案可以满足仪表要求的电量检测精度。设计的充电管理模块和提出的电量检测方案在便携式仪表的应用中体现出很好的实用价值。

In order to prevent overcharge,increase batteries＇ life, effiency and security, this paper analyses characteristics of lithium-ion batteries,charge management module and SOC （ state of charge） method. The particular hardware design of charge management module and SOC methold was given. The experiment indicates that the charge management module can achieve accurate charge management ;the precision of SOC methold satisfies the application demand. The charge management module and SOC methold have good application value in portable insturments.