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公开(公告)号：US5200689A
公开(公告)日：1993-04-06
申请号：US824935
申请日：1992-01-24
CPC分类号： G01R31/3624 , H02J7/0078 , G01R31/3648 , Y02B40/90 , Y02E70/40
摘要： A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.
摘要翻译： 电池充电控制器和电量计，可精确监测充电电池的电压，温度和充放电电流，并计算电池的充电容量和充电电量。 每次电池完全放电时，剩余的任何计算的电荷电平除以先前计算的充电容量减去。 当电池充满电时，充电电平设置为等于充电容量。 在随后的充电和放电期间，电流被转换为库仑计数，并从充电电平加减，以保持精确的充电电平。 通过在更新电池的充电水平之前减去温度比例因子来考虑由于温度导致的快速充电效率低下。 充电电平，电压和温度用于确定最佳快速充电终止点以实现充满电并防止温度滥用和过充电。 仅当电池在适当的电压和温度范围内时，才能使用快速充电。 充电控制器包括与电池相同的电池组中的微控制器电路，当电力不可用时，它由电池供电。 微控制器电路消耗很少的功率，测量电路误差以确保数据精度，自放电的时间周期和相应的电荷电平更新。 微控制器电路还包括用于存储电池电荷信息的存储器和通信端口，以向连接到电池组的计算机系统提供充电信息。
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公开(公告)号：US5315228A
公开(公告)日：1994-05-24
申请号：US825638
申请日：1992-01-24
CPC分类号： G01R31/3648 , G01R19/16542 , G01R31/006 , G01R31/361 , G01R31/3624 , G01R31/3655
摘要： A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by two and subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.
摘要翻译： 电池充电控制器和电量计，可精确监测充电电池的电压，温度和充放电电流，并计算电池的充电容量和充电电量。 每次电池完全放电时，剩余的任何计算的电荷水平除以2，并从先前计算的充电容量中减去。 当电池充满电时，充电电平设置为等于充电容量。 在随后的充电和放电期间，电流被转换为库仑计数，并从充电电平加减，以保持精确的充电电平。 通过在更新电池的充电水平之前减去温度比例因子来考虑由于温度导致的快速充电效率低下。 充电电平，电压和温度用于确定最佳快速充电终止点以实现充满电并防止温度滥用和过充电。 仅当电池在适当的电压和温度范围内时，才能使用快速充电。 充电控制器包括与电池相同的电池组中的微控制器电路，当电力不可用时，它由电池供电。 微控制器电路消耗很少的功率，测量电路误差以确保数据精度，自放电的时间周期和相应的电荷电平更新。 微控制器电路还包括用于存储电池电荷信息的存储器和通信端口，以向连接到电池组的计算机系统提供充电信息。
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