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    • 4. 发明授权
    • DC/DC converter within a portable computer
    • DC / DC转换器在便携式计算机内
    • US09337735B2
    • 2016-05-10
    • US12621921
    • 2009-11-19
    • Shigefumi Odaohhara
    • Shigefumi Odaohhara
    • H02M3/158G06F1/26H02M1/00H02M1/088
    • H02M3/1584G06F1/26H02M1/088H02M2001/0032Y02B70/16
    • A DC/DC converter is disclosed. The DC/DC converter includes a first heavy-load electronic switch and a second heavy-load electronic switch connected in series between an input terminal and ground at a first output portion, a third light-load electronic switch and a fourth light-load electronic switch connected in series between the input terminal and ground at a second output portion, an output circuit, an output current measurement circuit, and a control circuit. The output circuit includes an inductor connected to the first and second output portions. The output current measurement circuit measures an output current. The control circuit, in response to an output of the output current measurement circuit, selects a combination of the first and second heavy-load electronic switches during a heavy load state, and selects a combination of the third and fourth light-load electronic switch during a light load state.
    • 公开了一种DC / DC转换器。 DC / DC转换器包括在第一输出部分串联连接在输入端子和地之间的第一重负载电子开关和第二重负载电子开关,第三轻负载电子开关和第四轻载电子开关 在第二输出部分,输入端和接地之间串联连接的开关,输出电路,输出电流测量电路和控制电路。 输出电路包括连接到第一和第二输出部分的电感器。 输出电流测量电路测量输出电流。 控制电路响应于输出电流测量电路的输出,在重负载状态期间选择第一和第二重负载电子开关的组合,并且在第三轻负载电子开关的组合期间 轻负载状态。
    • 5. 发明授权
    • Systems and methods for enhanced protection systems for storage batteries
    • 用于蓄电池增强保护系统的系统和方法
    • US08687338B2
    • 2014-04-01
    • US12839666
    • 2010-07-20
    • Shigefumi Odaohhara
    • Shigefumi Odaohhara
    • H02H5/04
    • H02J7/0031
    • A highly reliable protection element for a storage battery is provided. A protection element includes a low melting point metal body and heater elements. The low melting point metal body is connected to a charger side line and a storage battery side line of a charge/discharge circuit. The heater element is connected to the storage battery side line and a switch, and the heater element is connected to the charger side line and a switch. When the switches are operated, a voltage that is not affected by a voltage drop of the low melting point metal body is applied to one of the heater elements, so that the low melting point metal body can be reliably fused.
    • 提供了高可靠性的蓄电池保护元件。 保护元件包括低熔点金属体和加热元件。 低熔点金属体连接到充电器侧线和充电/放电电路的蓄电池侧线。 加热器元件连接到蓄电池侧线和开关,并且加热器元件连接到充电器侧线和开关。 当操作开关时,将不受低熔点金属体的电压降影响的电压施加到一个加热器元件,使得低熔点金属体可以可靠地熔合。
    • 6. 发明授权
    • Power supply unit with noise reduction capability
    • 具有降噪功能的电源单元
    • US08675891B2
    • 2014-03-18
    • US12604765
    • 2009-10-23
    • Shigefumi OdaohharaNorihiro Urakawa
    • Shigefumi OdaohharaNorihiro Urakawa
    • H04B15/00H04R29/00H04R3/00H02B1/00G05F1/00H02M3/156G06F17/00
    • H02M3/158H02M1/44H02M2001/0032Y02B70/16Y10T307/826
    • Embodiments of the present invention provide a power supply unit capable of achieving noise reduction while maintaining efficiency under the light load state. A FET driver controls switching elements in either one of a Pulse Width Modulation (PWM) mode, an intermittent mode having a lower operating frequency than that in the PWM mode, and a noise-free mode having a higher operating frequency than an audible frequency range. The FET driver operates first in the intermittent mode under the light load state. A microphone collects noise generated from the surroundings of a power supply unit. When the level of an audio signal collected by the microphone exceeds a predetermined level, the FET driver transitions from the intermittent mode to the noise-free mode. In accordance with such an embodiment, the FET driver operates in the noise-free mode only when noise is actually generated.
    • 本发明的实施例提供一种能够在轻负载状态下保持效率的同时实现噪声降低的电源单元。 FET驱动器控制脉冲宽度调制(PWM)模式中的任一个中的开关元件,具有比PWM模式中的工作频率更低的工作频率的间歇模式,以及具有比可听频率范围更高的工作频率的无噪声模式 。 FET驱动器在轻负载状态下以间歇模式运行。 麦克风收集从电源单元周围产生的噪音。 当由麦克风收集的音频信号的电平超过预定电平时,FET驱动器从间歇模式转换到无噪声模式。 根据这样的实施例,只有当实际产生噪声时,FET驱动器才工作在无噪声模式。
    • 9. 发明申请
    • Battery Pack
    • 电池组
    • US20110050175A1
    • 2011-03-03
    • US12871338
    • 2010-08-30
    • Shigefumi OdaohharaHiromitsu Yamaguchi
    • Shigefumi OdaohharaHiromitsu Yamaguchi
    • H02J7/04H02J7/00
    • H02J7/0031G06F1/1635G06F1/263H01M10/443H01M10/486
    • A battery pack that can avoid an abnormal condition caused by heat generation associated with water adhesion to a connector part and a function stopping method of the battery pack are provided. A battery controller determines an abnormality and executes an operation of interrupting a charge/discharge path for a battery set formed by a charge/discharge circuit, when a detected temperature of a connector is equal to or more than a first threshold, and also a discharge current is equal to or more than a second threshold and/or a difference between the detected temperature of the connector and a detected temperature of another part (a discharge protection switch, a charge protection switch, and the battery set) is equal to or more than a third threshold.
    • 提供了能够避免与连接器部分的水附着相关的发热引起的异常状况的电池组和电池组的功能停止方法。 当连接器的检测温度等于或大于第一阈值时,电池控制器确定异常并且执行中断由充电/放电电路形成的电池组的充电/放电路径的操作,以及放电 电流等于或大于第二阈值和/或连接器的检测温度与另一部分(放电保护开关,充电保护开关和电池组)的检测温度之间的差等于或等于 超过第三个阈值。