公开(公告)号：US06967469B2

公开(公告)日：2005-11-22

申请号：US10703639

申请日：2003-11-06

申请人： Isao Yamamoto ,  Tetsuro Hashimoto ,  Hiroyuki Ishikawa ,  Shigekane Matsui

发明人： Isao Yamamoto ,  Tetsuro Hashimoto ,  Hiroyuki Ishikawa ,  Shigekane Matsui

IPC分类号： H02J7/10 ,  H01M10/44 ,  H02J7/02 ,  H02J7/04 ,  H02J7/06 ,  H01M10/46

CPC分类号： H02J7/06 ,  H02J7/045

摘要： A battery is charged by using in series a constant-voltage DC power supply with current limit function and a constant voltage circuit which has a differential comparator circuit and whose current limit value is variable. Following a period of charging with the current of current limit value by the constant-voltage DC power supply, a period is provided in correspondence with the state of charging of the battery, for charging with a current limit value of the constant voltage circuit which is smaller than that current limit value. The detection of the charging state of the battery is effected by a comparison between a current value of a current source of a differential comparator circuit and a differential output of that differential comparator circuit. It enables to reduce electric power consumed by the control transistor of the constant voltage circuit and to reduce the allowable loss required for the control transistor.

摘要翻译： 通过串联使用具有限流功能的恒压直流电源和具有差分比较器电路并且其电流限制值可变的恒压电路来对电池进行充电。 在通过恒压直流电源的电流限制值的充电期间之后，与电池的充电状态相对应地设置一个周期，对于恒压电路的电流限制值进行充电 小于当前极限值。 通过差分比较电路的电流源的电流值与该差分比较器电路的差分输出之间的比较来实现对电池的充电状态的检测。 能够降低由恒压电路的控制晶体管消耗的电力，并降低控制晶体管所需的容许损耗。

公开(公告)号：US09128160B2

公开(公告)日：2015-09-08

申请号：US13365748

申请日：2012-02-03

申请人： Kimio Ando ,  Shigekane Matsui ,  Isao Yamamoto

发明人： Kimio Ando ,  Shigekane Matsui ,  Isao Yamamoto

IPC分类号： H02J7/00 ,  H04B1/38 ,  G01R31/36 ,  H01M10/42 ,  H04W52/02

CPC分类号： G01R31/3613 ,  H01M2010/4278 ,  H04W52/028 ,  Y02D70/142

摘要： A detection circuit is mounted on an electronic device having a communication function, including at least a battery, a CPU, and a communication unit, and is configured to detect the remaining battery charge. An A/D converter performs sampling of a magnitude of a current IBAT discharged from the battery, and converts the current IBAT thus sampled into a digital current value. An interface circuit receives, from the CPU, control data which indicates a period in which there is an increase in the current discharged from the battery. Based upon the control data, a control unit raises the sampling frequency of the A/D converter in the period in which there is an increase in the current IBAT.

摘要翻译： 检测电路安装在具有通信功能的电子设备上，至少包括电池，CPU和通信单元，并且被配置为检测剩余电池电量。 A / D转换器对从电池放电的电流IBAT的大小进行采样，并将由此采样的电流IBAT转换为数字电流值。 接口电路从CPU接收指示从电池释放的电流增加的期间的控制数据。 基于控制数据，控制单元在当前IBAT增加的时段内提高A / D转换器的采样频率。

公开(公告)号：US08018263B2

公开(公告)日：2011-09-13

申请号：US12582551

申请日：2009-10-20

申请人： Shigekane Matsui

发明人： Shigekane Matsui

IPC分类号： H03K3/017

CPC分类号： H03K7/08 ,  H03K5/06 ,  H03K2005/00234

摘要： A pulse generating unit receives a clock at a predetermined frequency, and generates a pulse signal which transits synchronously with the positive edge of the clock. A flip-flop acquires the pulse signal every time a positive edge occurs in an inverted clock output from the inverter. A logic gate multiplexes the pulse signal and the output of the flip-flop. A selector selects either the output of the logic gate or the pulse signal.

摘要翻译： 脉冲发生单元以预定频率接收时钟，并产生与时钟的上升沿同步地转换的脉冲信号。 每当在从反相器输出的反相时钟中产生上升沿时，触发器就获取脉冲信号。 逻辑门复用脉冲信号和触发器的输出。 选择器选择逻辑门的输出或脉冲信号。