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    • 23. 发明申请
    • VOLTAGE DETECTOR FOR STORAGE ELEMENT
    • 存储元件电压检测器
    • US20100052650A1
    • 2010-03-04
    • US12516024
    • 2007-11-05
    • Koji YoshidaYoshimitu OdajimaHiroyuki Handa
    • Koji YoshidaYoshimitu OdajimaHiroyuki Handa
    • G01R19/00
    • G01R19/0084G01R31/3835G01R31/396
    • A voltage detector for a storage element that includes a positive electrode and a negative electrode, both being biased to a positive voltage, is disclosed. The voltage detector includes a first PNP transistor of which emitter terminal is connected to the negative terminal and its base terminal is connected to its collector terminal, a voltage-current converter of which first end is connected to the positive electrode, a second PNP transistor of which emitter terminal is connected to a second end of the converter and its base terminal is connected to the base terminal of the first PNP transistor, a current source connected to the collector terminal of the first PNP transistor for drawing a current from the collector terminal, a current sensing circuit connected to the collector terminal of the second PNP transistor for sensing a collector current, and a voltage output circuit for outputting a voltage across the positive electrode and the negative electrode based on an output from the current sensing circuit. The foregoing structure allows the voltage detector to detect a voltage across the storage element accurately at a high speed.
    • 公开了一种用于存储元件的电压检测器,该电压检测器包括被正电压偏置的正电极和负电极。 电压检测器包括:第一PNP晶体管,其发射极端子连接到负极端子,并且其基极端子连接到其集电极端子;电压电流转换器,其第一端连接到正极;第二PNP晶体管, 所述发射极端子连接到所述转换器的第二端,并且其基极端子连接到所述第一PNP晶体管的基极端子,连接到所述第一PNP晶体管的集电极端子的电流源,用于从所述集电极端子抽出电流, 连接到用于感测集电极电流的第二PNP晶体管的集电极端子的电流感测电路,以及用于基于电流感测电路的输出,在正极和负极两端输出电压的电压输出电路。 上述结构允许电压检测器以高速精确地检测存储元件两端的电压。
    • 26. 发明申请
    • POWER SUPPLY SYSTEM
    • 电源系统
    • US20090200991A1
    • 2009-08-13
    • US11576360
    • 2006-11-09
    • Koji YoshidaHiroyuki HandaMitsuhiro Matsuo
    • Koji YoshidaHiroyuki HandaMitsuhiro Matsuo
    • H02J7/00H02J7/04
    • B60L11/185B60L11/1864B60L11/1868H02J7/1415H02J7/1423H02J7/345Y02T10/7005Y02T10/7061Y02T10/7066Y02T10/7072Y02T90/121Y02T90/128Y02T90/14Y10S903/903Y10S903/907
    • A limit value of an output current of power converter is defined as a first current value when a voltage at both ends of capacitor is higher than a voltage at both ends of battery, and a limit value of the output current thereof is defined as a second current value when the voltages are substantially equal to each other, the first current value is set to be smaller than the second current value. Thus, when a voltage at both ends of capacitor and a voltage at both ends of battery are substantially equal, heat is hardly generated. The limit value of the output current is set to a maximum current consumed by load. When a voltage at both ends of capacitor is higher than a voltage at both ends of battery, the limit value of the output current is set to be smaller than the second current value, and thereby heat generation is suppressed. Thus, the size of the heat dissipating components can be reduced, and a power supply system whose entire size can be minimized can be provided.
    • 当电容器两端的电压高于电池两端的电压时,功率转换器的输出电流的极限值被定义为第一电流值,其输出电流的极限值被定义为第二电流值 当电压基本相等时,电流值被设定为小于第二电流值。 因此,当电容器两端的电压和电池两端的电压基本相等时,几乎不产生热量。 输出电流的极限值设置为负载消耗的最大电流。 当电容器两端的电压高于电池两端的电压时,将输出电流的极限值设定为小于第二电流值,从而抑制发热。 因此,可以降低散热部件的尺寸,并且可以提供整体尺寸可以最小化的电源系统。