班委竞选申请书专利名称：Battery fuel gauge 发明人：Robert R. Turnbull 申请号：US08/956618严守政治纪律和政治规矩
申请日：19970918
公开号：US05883497A
公开日：
镇江金山公园19990316
专利内容由知识产权出版社提供纵横什么意思
1520年
摘要：A power supply system, for example, for u with a portable personal computer, includes a smart battery pack and a charging system. The smart battery pack is provided with a dedicated microcontroller for controlling the charging level of the battery charger system. In particular, the status of the battery including the voltage and temperature of the battery is applied to the microcontroller along with a signal reprentative of the current load demand of the computer system. The microcontroller, in turn, provides a control signal in the form of fixed frequency, variable duty cycle pul width modulated (PWM) signal for controlling the charging level of the battery charger system. The duty cycle of the PWM signal is ud to regulate the charging current supplied by the battery charger. In particular, the DC value of the PWM signal is ud as a reference to control the charging current of the regulator to provide a variable output charging current with a relatively wide current range. As such, the battery charger is adapted to efficiently utilize the residual capacity of the battery charger system for optimizing charging of the battery packs during all operating conditions of the computer system. Moreover, the u of a PWM signal from the battery pack to control the battery charger enables a single type of battery charger to be utilized for various battery technologies.西窗法雨读后感
申请人：PACKARD BELL NEC
北京联合大学学报
则知明而行无过矣代理机构：Fitch, Even, Tabin & Flannery 更多信息请下载全文后查看
