单片机与嵌入式系统应用
單片機與嵌入式繫統應用
단편궤여감입식계통응용
MICROCONTROLLER & EMBEDDED SYSTEM
2014年
4期
25-27,31
,共4页
低功耗技术%高端检测%SOC%锂电池管理系统
低功耗技術%高耑檢測%SOC%鋰電池管理繫統
저공모기술%고단검측%SOC%리전지관리계통
low power technology%high-side current sensing%SOC%lithium battery management system
为了满足某微功耗仪表的应用，提高安全性能，提出了一种超低功耗锂电池管理系统的设计方案。该方案采用双向高端微电流检测电路，结合开路电压和电荷积分算法实现电量检测。采用纽扣电池代替DC/DC降压电路最大程度降低功耗。系统实现了基本保护、剩余电量检测、故障记录等功能。该锂电池管理系统在仪表上进行验证，结果表明具有良好的稳定性和可靠性，平均工作电流仅145μA。
為瞭滿足某微功耗儀錶的應用，提高安全性能，提齣瞭一種超低功耗鋰電池管理繫統的設計方案。該方案採用雙嚮高耑微電流檢測電路，結閤開路電壓和電荷積分算法實現電量檢測。採用紐釦電池代替DC/DC降壓電路最大程度降低功耗。繫統實現瞭基本保護、剩餘電量檢測、故障記錄等功能。該鋰電池管理繫統在儀錶上進行驗證，結果錶明具有良好的穩定性和可靠性，平均工作電流僅145μA。
위료만족모미공모의표적응용，제고안전성능，제출료일충초저공모리전지관리계통적설계방안。해방안채용쌍향고단미전류검측전로，결합개로전압화전하적분산법실현전량검측。채용뉴구전지대체DC/DC강압전로최대정도강저공모。계통실현료기본보호、잉여전량검측、고장기록등공능。해리전지관리계통재의표상진행험증，결과표명구유량호적은정성화가고성，평균공작전류부145μA。
To meet the application of micro-power instrumentation and to improve security,the paper proposed a design scheme of ultra-low power consumption lithium battery management system.The scheme adopted the bidirectional circuit with the combination of the open-circuit voltage approach and ampere-hour integration approach to achieve the estimation of battery residual capacity.In order to minimize the power consumption,this scheme used button batteries instead of DC/DC circuit.The system realized the basic protection, the remaining capacity detection,and fault recording functions.Experiments with the lithium battery management system on the instru-ment showed that it has a good stability and reliability.The system average working current is only 145μA.
