星载蓄电池组软件V/T充电控制技术研究  

Study of Software V/T Curve Control Technology Applicable for Battery Charging in Satellite

作　　者：鄢婉娟[1] 彭健[1] 乔学荣[1] 

机构地区：[1]航天东方红卫星有限公司,北京100094

出　　处：《航天器工程》2011年第6期74-78,共5页Spacecraft Engineering

摘　　要：蓄电池组作为整星的储能部件,其充放电循环寿命是制约整星寿命的重要因素之一。适当的充电控制手段能有效地延缓蓄电池性能的衰降,延长卫星的使用寿命。文章分析了目前基于硬件模拟电路的蓄电池电压/温度(V/T)曲线充电控制技术的特点和局限性,提出了一种采用电源控制计算机软件实现的V/T曲线充电控制方法,其针对蓄电池可能出现的开路或短路失效模式,建立了V/T曲线的数学模型,根据蓄电池在轨的实际使用情况设计了软件控制算法,驱动电源控制计算机数/模转换器(D/A)输出作为硬件充电电流调节电路的基准信号,实现了充电电流控制的目的。该方法由于使用计算机控制,V/T曲线的模型参数可在轨上注调整,实现了在蓄电池的不同温度区间或性能变化时精确的充电控制,克服了传统硬件V/T曲线控制的全温度范围内控制不精确,可靠性、灵活性差等缺点,并通过试验验证了其可行性。As a storage energy part of satellite,battery＇s charging-discharging cycle lifetime influence strongly satellite＇s lifetime,and appropriate charging control measure can effectively delay performance degrade of battery and prolong satellite＇s lifetime.This paper analyses the characteristic and localization of battery V/T curve charging control method,brings forward a V/T curve charging control method realized by computer software,which establishes V/T curve math model containing potential open-circuit or short-circuit invalidation mode,designs software control algorithm according to battery actual state,takes output D/A control signal as a benchmark of hardware charging current regulating circuit,and achieves the goal of regulating charging current.By using computer,the model parameters of V/T curve can be adjusted in orbit the accurate charging control can＇be fulfilled whenever battery is in different temperature region or perfor-mance attenuation occurs,which overcomes traditional hardware V/T curve control disadvantage of lower precision,reliability and agility in the whole temperature range.This method is validated to be feasible through test.

关 键 词：卫星 蓄电池 软件 V/T曲线 充电控制 模型 

分 类 号：V442[航空宇航科学与技术—飞行器设计]