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1. 发明授权

US5289101A Battery charger with charging current controller 失效
标题翻译：电池充电器带充电电流控制器
公开(公告)号：US5289101A
公开(公告)日：1994-02-22
申请号：US690563
申请日：1991-04-24
申请人： Masami Furuta , Takao Iwatsuki , Masatoshi Sugiura , Toshio Matsumoto , Hideki Watanabe , Hideiki Niwa
发明人： Masami Furuta , Takao Iwatsuki , Masatoshi Sugiura , Toshio Matsumoto , Hideki Watanabe , Hideiki Niwa
IPC分类号： H02J7/02 , H02J7/00
CPC分类号： H02J7/022
摘要： A battery charger includes a transformer having a primary coil and a secondary coil, a switch for duty control of a current flowing through the primary coil of the transformer, a detector for detecting a value of a current flowing through the secondary coil of the transformer, and a secondary controller for receiving the detected value from the detector and for outputting a charge control signal. The pulse of the charge control signal is modulated in accordance with the detected value by the detector. The battery charger further includes a light emitter controlled by the charge control signal for flickering, a phototransistor turning on and off according to the flickering of the light emitter, and a primary controller for converting the ratio of the time during on of the phototransistor to the time during off of the phototransistor into an analog value, and for outputting to the switch a pulse signal which is modulated to have a duty cycle corresponding to the analog value so as to control a duty cycle of the switch.
摘要翻译：电池充电器包括具有初级线圈和次级线圈的变压器，用于对流过变压器的初级线圈的电流进行占空比控制的开关，用于检测流过变压器的次级线圈的电流的值的检测器，以及二次控制器，用于从检测器接收检测值并输出充电控制信号。根据检测器的检测值对充电控制信号的脉冲进行调制。电池充电器还包括由用于闪烁的充电控制信号控制的光发射器，根据光发射器的闪烁导通和关断的光电晶体管，以及用于将光电晶体管的导通时间的比率转换为将光电晶体管关闭期间的时间变成模拟值，并且向开关输出被调制为具有对应于模拟值的占空比的脉冲信号，以便控制开关的占空比。

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