基于单片机的锂电池并联管理系统

Management system of parallel lithium batteries based on single-chip microcomputer

目前的电池串联方式对容量大的电池是一种浪费,而且如果一节电池出现问题,将对整个电池组的工作造成致命的危害。提出了利用单片机和开关电源技术的组合,构造出智能化的锂离子/聚合物电池并联智能管理系统。采用单体多节电池的并联方式,使用开关电源的DC-DC变换技术,不仅可将4.2 V左右的电压提升到所需要的电压等级,而且可有效地减小电池充电系统的功率损耗,降低了对电池一致性的要求。

It is a waste of large capacity battery in series,and will cause fatal damage to whole battery group if one battery fails.In this paper,a scheme of parallel lithium/polymer battery charge-discharge intelligent management system with single-chip microcomputer and switch power supply technology was introduced.Under DC-DC transform of switch power,it could not only boost the voltage of battery from 4.2 V to the voltage needed,but also reduce the power waste of battery charge system and requirement of battery coherence.