公开(公告)号：US06262494B1

公开(公告)日：2001-07-17

申请号：US09221116

申请日：1998-12-28

申请人： Toshiaki Tsukuni ,  Yoshiro Takeda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Toshiaki Tsukuni ,  Yoshiro Takeda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02H300

CPC分类号： H02J7/0047 ,  G01R31/362 ,  H02J2007/005 ,  Y10T307/696

摘要： A battery unit includes a plurality of cells connected in parallel with one another, and a switch connected in series with at least one of the cells. The battery unit further includes a control circuit for controlling the on or off state of the switch, and a voltage detection terminal at which a voltage produced by a cell, to which the switch is connected, is developed. The switch can be turned off even with the battery unit connected to a load. A cell in series with which the switch is connected is disconnected from the load. In this state, the state of the cell can be detected through the voltage detection terminal. Even when a resistor is substituted for the switch, the same advantage can be provided. Moreover, the battery unit is freely detachably attached to a main unit of an information processing apparatus. The battery unit then supplies power to the main unit. A power supply control circuit for requesting notification of the state of each cell in the battery unit is incorporated in the main unit. The states of the cells can therefore be detected mutually independently.

摘要翻译： 电池单元包括彼此并联连接的多个单元，以及与至少一个单元串联连接的开关。 电池单元还包括用于控制开关的接通或断开状态的控制电路，以及电容检测端子，开关连接到由开关连接的单元产生的电压。 即使电池单元连接到负载，也可以关闭开关。 与开关连接的串联电池与负载断开连接。 在该状态下，可以通过电压检测端子检测电池的状态。 即使用电阻代替开关，也可以提供相同的优点。 此外，电池单元可自由拆卸地附接到信息处理设备的主单元。 电池单元然后向主机供电。 用于请求通知电池单元中的每个单元的状态的电源控制电路被并入主单元中。 因此，可以相互独立地检测单元的状态。

公开(公告)号：US06051955A

公开(公告)日：2000-04-18

申请号：US982937

申请日：1997-12-01

申请人： Mitsuo Saeki ,  Hidekiyo Ozawa ,  Toshiaki Tsukuni ,  Yoshiro Takeda

发明人： Mitsuo Saeki ,  Hidekiyo Ozawa ,  Toshiaki Tsukuni ,  Yoshiro Takeda

IPC分类号： H01M10/42 ,  H02H7/18 ,  H02J7/00

CPC分类号： H02J7/0024 ,  H02J7/0026

摘要： A protection circuit is used for a battery unit which has a plurality of cell parts coupled in parallel, and first and second power supplying terminals, where each of the cell parts includes a plurality of battery cells coupled in series, and first and second terminals respectively coupled to the first and second power supplying terminals. The protection circuit includes a plurality of switching elements making an electrical connection to the first terminal of a corresponding one of the cell parts and the first power supplying terminal, and disconnecting the electrical connection in response to an active signal, and a voltage monitoring circuit outputting the active signal to the switching elements when a voltage of at least one battery cell within one cell part falls outside a predetermined range, independently with respect to each of the cell parts.

摘要翻译： 保护电路用于具有并联耦合的多个电池单元的电池单元以及第一和第二电力供应端子，其中每个电池单元分别包括串联耦合的多个电池单元以及第一和第二端子 耦合到第一和第二电源端子。 所述保护电路包括多个开关元件，其与所述电池单元部件和所述第一供电端子中的相应一个的第一端子进行电连接，并响应于有源信号断开所述电连接;以及电压监视电路，输出 当一个单元部分内的至少一个电池单元的电压相对于每个单元部分独立地落在预定范围之外时，对开关元件的有效信号。

公开(公告)号：US07148587B2

公开(公告)日：2006-12-12

申请号：US10385573

申请日：2003-03-12

申请人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02J1/00

CPC分类号： H02M1/10 ,  Y10T307/675 ,  Y10T307/696 ,  Y10T307/707 ,  Y10T307/858

摘要： In a DC-DC converter circuit having a plurality of input terminals connected to a plurality of DC power supplies, and an output terminal, the DC-DC converter circuit includes a power supply selection section for selecting a DC power supply of lowest voltage on the condition that the voltage is not less than a predetermined voltage, and a step-down type of regulator section for converting the voltage of the DC power supply selected by the power supply selection section into a predetermined voltage lower than the voltage of the DC power supply selected by the power supply selection section, and outputting the converted voltage through the output terminal.

公开(公告)号：US20060049804A1

公开(公告)日：2006-03-09

申请号：US11260177

申请日：2005-10-28

申请人： Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02J7/00

CPC分类号： H01M10/425 ,  H02H7/18 ,  H02J7/0026 ,  H02J2007/0037 ,  H02J2007/004

摘要： A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1” is supplied to a set terminal, a flip-flop outputs “1”. The gate of a discharge control FET then becomes “1”, so that the discharge control FET is OFF regardless of a discharge control signal supplied from a voltage monitor circuit. When a reset signal “1” is supplied to a reset terminal, the flip-flop outputs “0”. The discharge control FET is then switched on and off in accordance with the output of a discharge control circuit of the voltage monitor circuit. In this manner, battery cells connected to an electronic device do not over-discharge, even when they are left unused for a long period of time. Thus, the battery unit can be prevented from deteriorating and shortening the life thereof.

公开(公告)号：US06989652B2

公开(公告)日：2006-01-24

申请号：US10206065

申请日：2002-07-29

申请人： Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02J7/00

CPC分类号： H01M10/425 ,  H02H7/18 ,  H02J7/0026 ,  H02J2007/0037 ,  H02J2007/004

摘要： A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1” is supplied to a set terminal, a flip-flop outputs “1”. The gate of a discharge control FET then becomes “1”, so that the discharge control FET is OFF regardless of a discharge control signal supplied from a voltage monitor circuit. When a reset signal “1” is supplied to a reset terminal, the flip-flop outputs “0”. The discharge control FET is then switched on and off in accordance with the output of a discharge control circuit of the voltage monitor circuit. In this manner, battery cells connected to an electronic device do not over-discharge, even when they are left unused for a long period of time. Thus, the battery unit can be prevented from deteriorating and shortening the life thereof.

公开(公告)号：US06566766B2

公开(公告)日：2003-05-20

申请号：US10097832

申请日：2002-03-15

申请人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02J100

CPC分类号： H02M1/10 ,  Y10T307/675 ,  Y10T307/696 ,  Y10T307/707 ,  Y10T307/858

摘要： In a DC—DC converter circuit having a plurality of input terminals connected to a plurality of DC power supplies, and an output terminal, the DC—DC converter circuit includes a power supply selection section for selecting a DC power supply of lowest voltage on the condition that the voltage is not less than a predetermined voltage, and a step-down type of regulator section for converting the voltage of the DC power supply selected by the power supply selection section into a predetermined voltage lower than the voltage of the DC power supply selected by the power supply selection section, and outputting the converted voltage through the output terminal.

公开(公告)号：US06414403B1

公开(公告)日：2002-07-02

申请号：US09158879

申请日：1998-09-23

申请人： Seiya Kitagawa ,  Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Seiya Kitagawa ,  Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02M700

摘要： A power unit having a built-in battery to supply voltage from the battery over a long period of time by utilizing fully the capabilities of the built-in battery. The power unit supplies electric power to a load even when a battery with a higher battery voltage than the external power source voltage is used by charging the battery from an external power source even when the external power source voltage is lower than the battery voltage. By charging the battery when electric power is supplied to a load from an external power source, the power unit supplies electric power to the load from the battery when the supply of electricity from an external power source is cut off. The power unit includes a having converter to boost output voltage from the battery and to supply the voltage to the load when the battery is discharged and the external power source voltage is higher than the battery voltage. Alternatively, the power unit includes a converter to boost the external power source voltage and to charge the battery when using the battery with a voltage lower than the external power source voltage.

公开(公告)号：US06404076B1

公开(公告)日：2002-06-11

申请号：US09690023

申请日：2000-10-17

申请人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

发明人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidekiyo Ozawa

IPC分类号： H02J300

CPC分类号： H02M1/10 ,  Y10T307/675 ,  Y10T307/696 ,  Y10T307/707 ,  Y10T307/858

摘要： In a DC-DC converter circuit having a plurality of input terminals connected to a plurality of DC power supplies, and an output terminal, the DC-DC converter circuit includes a power supply selection section for selecting a DC power supply of lowest voltage on the condition that the voltage is not less than a predetermined voltage, and a step-down type of regulator section for converting the voltage of the DC power supply selected by the power supply selection section into a predetermined voltage lower than the voltage of the DC power supply selected by the power supply selection section, and outputting the converted voltage through the output terminal.

摘要翻译： 在具有连接到多个DC电源的多个输入端子的DC-DC转换器电路和输出端子中，所述DC-DC转换器电路包括：电源选择部，用于选择所述DC-DC转换电路中的最低电压的直流电源; 条件是电压不小于预定电压;以及降压型调节器部分，用于将由电源选择部分选择的直流电源的电压转换成低于直流电源电压的预定电压 由电源选择部选择，并通过输出端子输出转换后的电压。

公开(公告)号：US5717318A

公开(公告)日：1998-02-10

申请号：US783003

申请日：1997-01-14

申请人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa

发明人： Kouichi Matsuda ,  Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa

IPC分类号： H02J1/00 ,  H02M3/07 ,  H02M7/515

CPC分类号： H02M3/07

摘要： FET's lying on a switching circuit are used to execute a switched capacitor action. The FET's connect a first capacitor to a battery to charge the former at an input power voltage, and after charging, disconnect the first capacitor from the battery but simultaneously connect the first capacitor to a second capacitor to transfer accumulated electric charges to the latter. A control circuit including a comparator and a voltage controlled oscillator monitors an output voltage from the second capacitor and performs a switching control so that the output voltage is maintained at a specific level.

摘要翻译： 位于开关电路上的FET用于执行开关电容器动作。 FET将第一电容器连接到电池，以输入电源电压对前者充电，并且在充电之后，将第一电容器与电池断开，同时将第一电容器连接到第二电容器以将累积的电荷转移到后者。 包括比较器和压控振荡器的控制电路监视来自第二电容器的输出电压，并进行开关控制，使得输出电压保持在特定的电平。

公开(公告)号：US20050264270A1

公开(公告)日：2005-12-01

申请号：US11134270

申请日：2005-05-23

申请人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Takashi Matsumoto ,  Kyuichi Takimoto ,  Yoshiaki Sano

发明人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Takashi Matsumoto ,  Kyuichi Takimoto ,  Yoshiaki Sano

IPC分类号： H02M3/155 ,  G05F1/40 ,  H02M1/00 ,  H02M1/36 ,  H02M3/156

CPC分类号： H02M1/36 ,  H02M3/156 ,  H02M2001/008

摘要： A direct-current to direct-current conversion (DC/DC) apparatus includes a control circuit having an error amplifier for voltage control, basing the conversion on a pulse width modulation control using an output of the error amplifier. The error amplifier inputs a voltage signal corresponding to an output voltage of a DC/DC result and a plurality of reference voltage signals. The DC/DC apparatus also includes a soft start capacitor to provide one of the plurality of reference voltage signals. The error amplifier amplifies a difference between the voltage signal corresponding of the output voltage of a DC/DC result and a voltage signal of a lower potential among the plurality of reference voltage signals and carries out the pulse width modulation control. Furthermore, the control circuit includes a circuit for discharging charges corresponding to the output voltage of the DC/DC result when a power supply to the control circuit is turned off.

摘要翻译： 直流到直流转换（DC / DC）装置包括具有用于电压控制的误差放大器的控制电路，利用误差放大器的输出根据脉宽调制控制进行转换。 误差放大器输入对应于DC / DC结果和多个参考电压信号的输出电压的电压信号。 DC / DC装置还包括软启动电容器，以提供多个参考电压信号中的一个。 误差放大器放大对应于DC / DC结果的输出电压的电压信号与多个参考电压信号中较低电位的电压信号之间的差值，并执行脉宽调制控制。 此外，当控制电路的电源被断开时，控制电路包括用于放电对应于DC / DC结果的输出电压的电荷的电路。